Bram Moolenaar | edf3f97 | 2016-08-29 22:49:24 +0200 | [diff] [blame] | 1 | /* vi:set ts=8 sts=4 sw=4 noet: |
Bram Moolenaar | 071d427 | 2004-06-13 20:20:40 +0000 | [diff] [blame] | 2 | * |
| 3 | * VIM - Vi IMproved by Bram Moolenaar |
| 4 | * |
| 5 | * Do ":help uganda" in Vim to read copying and usage conditions. |
| 6 | * Do ":help credits" in Vim to see a list of people who contributed. |
| 7 | * See README.txt for an overview of the Vim source code. |
| 8 | */ |
| 9 | |
| 10 | /* |
| 11 | * undo.c: multi level undo facility |
| 12 | * |
| 13 | * The saved lines are stored in a list of lists (one for each buffer): |
| 14 | * |
| 15 | * b_u_oldhead------------------------------------------------+ |
| 16 | * | |
| 17 | * V |
| 18 | * +--------------+ +--------------+ +--------------+ |
| 19 | * b_u_newhead--->| u_header | | u_header | | u_header | |
| 20 | * | uh_next------>| uh_next------>| uh_next---->NULL |
| 21 | * NULL<--------uh_prev |<---------uh_prev |<---------uh_prev | |
| 22 | * | uh_entry | | uh_entry | | uh_entry | |
| 23 | * +--------|-----+ +--------|-----+ +--------|-----+ |
| 24 | * | | | |
| 25 | * V V V |
| 26 | * +--------------+ +--------------+ +--------------+ |
| 27 | * | u_entry | | u_entry | | u_entry | |
| 28 | * | ue_next | | ue_next | | ue_next | |
| 29 | * +--------|-----+ +--------|-----+ +--------|-----+ |
| 30 | * | | | |
| 31 | * V V V |
| 32 | * +--------------+ NULL NULL |
| 33 | * | u_entry | |
| 34 | * | ue_next | |
| 35 | * +--------|-----+ |
| 36 | * | |
| 37 | * V |
| 38 | * etc. |
| 39 | * |
| 40 | * Each u_entry list contains the information for one undo or redo. |
| 41 | * curbuf->b_u_curhead points to the header of the last undo (the next redo), |
Bram Moolenaar | 1f4d4de | 2006-03-14 23:00:46 +0000 | [diff] [blame] | 42 | * or is NULL if nothing has been undone (end of the branch). |
Bram Moolenaar | 071d427 | 2004-06-13 20:20:40 +0000 | [diff] [blame] | 43 | * |
Bram Moolenaar | 1e60789 | 2006-03-13 22:15:53 +0000 | [diff] [blame] | 44 | * For keeping alternate undo/redo branches the uh_alt field is used. Thus at |
| 45 | * each point in the list a branch may appear for an alternate to redo. The |
| 46 | * uh_seq field is numbered sequentially to be able to find a newer or older |
| 47 | * branch. |
| 48 | * |
Bram Moolenaar | 1f4d4de | 2006-03-14 23:00:46 +0000 | [diff] [blame] | 49 | * +---------------+ +---------------+ |
| 50 | * b_u_oldhead --->| u_header | | u_header | |
| 51 | * | uh_alt_next ---->| uh_alt_next ----> NULL |
| 52 | * NULL <----- uh_alt_prev |<------ uh_alt_prev | |
| 53 | * | uh_prev | | uh_prev | |
| 54 | * +-----|---------+ +-----|---------+ |
| 55 | * | | |
| 56 | * V V |
| 57 | * +---------------+ +---------------+ |
| 58 | * | u_header | | u_header | |
| 59 | * | uh_alt_next | | uh_alt_next | |
| 60 | * b_u_newhead --->| uh_alt_prev | | uh_alt_prev | |
| 61 | * | uh_prev | | uh_prev | |
| 62 | * +-----|---------+ +-----|---------+ |
| 63 | * | | |
| 64 | * V V |
| 65 | * NULL +---------------+ +---------------+ |
| 66 | * | u_header | | u_header | |
| 67 | * | uh_alt_next ---->| uh_alt_next | |
| 68 | * | uh_alt_prev |<------ uh_alt_prev | |
| 69 | * | uh_prev | | uh_prev | |
| 70 | * +-----|---------+ +-----|---------+ |
| 71 | * | | |
| 72 | * etc. etc. |
| 73 | * |
| 74 | * |
Bram Moolenaar | f05e3b0 | 2010-05-29 15:40:47 +0200 | [diff] [blame] | 75 | * All data is allocated and will all be freed when the buffer is unloaded. |
Bram Moolenaar | 071d427 | 2004-06-13 20:20:40 +0000 | [diff] [blame] | 76 | */ |
| 77 | |
Bram Moolenaar | fecb660 | 2007-10-01 20:54:15 +0000 | [diff] [blame] | 78 | /* Uncomment the next line for including the u_check() function. This warns |
| 79 | * for errors in the debug information. */ |
| 80 | /* #define U_DEBUG 1 */ |
| 81 | #define UH_MAGIC 0x18dade /* value for uh_magic when in use */ |
| 82 | #define UE_MAGIC 0xabc123 /* value for ue_magic when in use */ |
| 83 | |
Bram Moolenaar | 8f4ac01 | 2014-08-10 13:38:34 +0200 | [diff] [blame] | 84 | /* Size of buffer used for encryption. */ |
| 85 | #define CRYPT_BUF_SIZE 8192 |
| 86 | |
Bram Moolenaar | 071d427 | 2004-06-13 20:20:40 +0000 | [diff] [blame] | 87 | #include "vim.h" |
| 88 | |
Bram Moolenaar | 8f4ac01 | 2014-08-10 13:38:34 +0200 | [diff] [blame] | 89 | /* Structure passed around between functions. |
| 90 | * Avoids passing cryptstate_T when encryption not available. */ |
| 91 | typedef struct { |
| 92 | buf_T *bi_buf; |
| 93 | FILE *bi_fp; |
| 94 | #ifdef FEAT_CRYPT |
| 95 | cryptstate_T *bi_state; |
| 96 | char_u *bi_buffer; /* CRYPT_BUF_SIZE, NULL when not buffering */ |
| 97 | size_t bi_used; /* bytes written to/read from bi_buffer */ |
| 98 | size_t bi_avail; /* bytes available in bi_buffer */ |
| 99 | #endif |
| 100 | } bufinfo_T; |
| 101 | |
| 102 | |
Bram Moolenaar | baaa7e9 | 2016-01-29 22:47:03 +0100 | [diff] [blame] | 103 | static void u_unch_branch(u_header_T *uhp); |
| 104 | static u_entry_T *u_get_headentry(void); |
| 105 | static void u_getbot(void); |
| 106 | static void u_doit(int count); |
| 107 | static void u_undoredo(int undo); |
| 108 | static void u_undo_end(int did_undo, int absolute); |
| 109 | static void u_add_time(char_u *buf, size_t buflen, time_t tt); |
| 110 | static void u_freeheader(buf_T *buf, u_header_T *uhp, u_header_T **uhpp); |
| 111 | static void u_freebranch(buf_T *buf, u_header_T *uhp, u_header_T **uhpp); |
| 112 | static void u_freeentries(buf_T *buf, u_header_T *uhp, u_header_T **uhpp); |
| 113 | static void u_freeentry(u_entry_T *, long); |
Bram Moolenaar | 55debbe | 2010-05-23 23:34:36 +0200 | [diff] [blame] | 114 | #ifdef FEAT_PERSISTENT_UNDO |
Bram Moolenaar | 1d6fbe6 | 2016-02-19 22:46:34 +0100 | [diff] [blame] | 115 | # ifdef FEAT_CRYPT |
Bram Moolenaar | baaa7e9 | 2016-01-29 22:47:03 +0100 | [diff] [blame] | 116 | static int undo_flush(bufinfo_T *bi); |
Bram Moolenaar | 1d6fbe6 | 2016-02-19 22:46:34 +0100 | [diff] [blame] | 117 | # endif |
Bram Moolenaar | baaa7e9 | 2016-01-29 22:47:03 +0100 | [diff] [blame] | 118 | static int undo_read(bufinfo_T *bi, char_u *buffer, size_t size); |
Bram Moolenaar | baaa7e9 | 2016-01-29 22:47:03 +0100 | [diff] [blame] | 119 | static int serialize_uep(bufinfo_T *bi, u_entry_T *uep); |
| 120 | static u_entry_T *unserialize_uep(bufinfo_T *bi, int *error, char_u *file_name); |
| 121 | static void serialize_pos(bufinfo_T *bi, pos_T pos); |
| 122 | static void unserialize_pos(bufinfo_T *bi, pos_T *pos); |
| 123 | static void serialize_visualinfo(bufinfo_T *bi, visualinfo_T *info); |
| 124 | static void unserialize_visualinfo(bufinfo_T *bi, visualinfo_T *info); |
Bram Moolenaar | 55debbe | 2010-05-23 23:34:36 +0200 | [diff] [blame] | 125 | #endif |
Bram Moolenaar | 071d427 | 2004-06-13 20:20:40 +0000 | [diff] [blame] | 126 | |
Bram Moolenaar | f05e3b0 | 2010-05-29 15:40:47 +0200 | [diff] [blame] | 127 | #define U_ALLOC_LINE(size) lalloc((long_u)(size), FALSE) |
Bram Moolenaar | baaa7e9 | 2016-01-29 22:47:03 +0100 | [diff] [blame] | 128 | static char_u *u_save_line(linenr_T); |
Bram Moolenaar | 071d427 | 2004-06-13 20:20:40 +0000 | [diff] [blame] | 129 | |
Bram Moolenaar | 730cde9 | 2010-06-27 05:18:54 +0200 | [diff] [blame] | 130 | /* used in undo_end() to report number of added and deleted lines */ |
Bram Moolenaar | 071d427 | 2004-06-13 20:20:40 +0000 | [diff] [blame] | 131 | static long u_newcount, u_oldcount; |
| 132 | |
| 133 | /* |
| 134 | * When 'u' flag included in 'cpoptions', we behave like vi. Need to remember |
| 135 | * the action that "u" should do. |
| 136 | */ |
| 137 | static int undo_undoes = FALSE; |
| 138 | |
Bram Moolenaar | 55debbe | 2010-05-23 23:34:36 +0200 | [diff] [blame] | 139 | static int lastmark = 0; |
| 140 | |
Bram Moolenaar | 9db5806 | 2010-05-29 20:33:07 +0200 | [diff] [blame] | 141 | #if defined(U_DEBUG) || defined(PROTO) |
Bram Moolenaar | fecb660 | 2007-10-01 20:54:15 +0000 | [diff] [blame] | 142 | /* |
| 143 | * Check the undo structures for being valid. Print a warning when something |
| 144 | * looks wrong. |
| 145 | */ |
| 146 | static int seen_b_u_curhead; |
| 147 | static int seen_b_u_newhead; |
| 148 | static int header_count; |
| 149 | |
| 150 | static void |
| 151 | u_check_tree(u_header_T *uhp, |
| 152 | u_header_T *exp_uh_next, |
| 153 | u_header_T *exp_uh_alt_prev) |
| 154 | { |
| 155 | u_entry_T *uep; |
| 156 | |
| 157 | if (uhp == NULL) |
| 158 | return; |
| 159 | ++header_count; |
| 160 | if (uhp == curbuf->b_u_curhead && ++seen_b_u_curhead > 1) |
| 161 | { |
| 162 | EMSG("b_u_curhead found twice (looping?)"); |
| 163 | return; |
| 164 | } |
| 165 | if (uhp == curbuf->b_u_newhead && ++seen_b_u_newhead > 1) |
| 166 | { |
| 167 | EMSG("b_u_newhead found twice (looping?)"); |
| 168 | return; |
| 169 | } |
| 170 | |
| 171 | if (uhp->uh_magic != UH_MAGIC) |
| 172 | EMSG("uh_magic wrong (may be using freed memory)"); |
| 173 | else |
| 174 | { |
| 175 | /* Check pointers back are correct. */ |
Bram Moolenaar | 83d09bb | 2010-06-01 19:58:08 +0200 | [diff] [blame] | 176 | if (uhp->uh_next.ptr != exp_uh_next) |
Bram Moolenaar | fecb660 | 2007-10-01 20:54:15 +0000 | [diff] [blame] | 177 | { |
| 178 | EMSG("uh_next wrong"); |
| 179 | smsg((char_u *)"expected: 0x%x, actual: 0x%x", |
Bram Moolenaar | 83d09bb | 2010-06-01 19:58:08 +0200 | [diff] [blame] | 180 | exp_uh_next, uhp->uh_next.ptr); |
Bram Moolenaar | fecb660 | 2007-10-01 20:54:15 +0000 | [diff] [blame] | 181 | } |
Bram Moolenaar | 83d09bb | 2010-06-01 19:58:08 +0200 | [diff] [blame] | 182 | if (uhp->uh_alt_prev.ptr != exp_uh_alt_prev) |
Bram Moolenaar | fecb660 | 2007-10-01 20:54:15 +0000 | [diff] [blame] | 183 | { |
| 184 | EMSG("uh_alt_prev wrong"); |
| 185 | smsg((char_u *)"expected: 0x%x, actual: 0x%x", |
Bram Moolenaar | 83d09bb | 2010-06-01 19:58:08 +0200 | [diff] [blame] | 186 | exp_uh_alt_prev, uhp->uh_alt_prev.ptr); |
Bram Moolenaar | fecb660 | 2007-10-01 20:54:15 +0000 | [diff] [blame] | 187 | } |
| 188 | |
| 189 | /* Check the undo tree at this header. */ |
| 190 | for (uep = uhp->uh_entry; uep != NULL; uep = uep->ue_next) |
| 191 | { |
| 192 | if (uep->ue_magic != UE_MAGIC) |
| 193 | { |
| 194 | EMSG("ue_magic wrong (may be using freed memory)"); |
| 195 | break; |
| 196 | } |
| 197 | } |
| 198 | |
| 199 | /* Check the next alt tree. */ |
Bram Moolenaar | 83d09bb | 2010-06-01 19:58:08 +0200 | [diff] [blame] | 200 | u_check_tree(uhp->uh_alt_next.ptr, uhp->uh_next.ptr, uhp); |
Bram Moolenaar | fecb660 | 2007-10-01 20:54:15 +0000 | [diff] [blame] | 201 | |
| 202 | /* Check the next header in this branch. */ |
Bram Moolenaar | 83d09bb | 2010-06-01 19:58:08 +0200 | [diff] [blame] | 203 | u_check_tree(uhp->uh_prev.ptr, uhp, NULL); |
Bram Moolenaar | fecb660 | 2007-10-01 20:54:15 +0000 | [diff] [blame] | 204 | } |
| 205 | } |
| 206 | |
Bram Moolenaar | b0b5088 | 2010-07-07 18:26:28 +0200 | [diff] [blame] | 207 | static void |
Bram Moolenaar | fecb660 | 2007-10-01 20:54:15 +0000 | [diff] [blame] | 208 | u_check(int newhead_may_be_NULL) |
| 209 | { |
| 210 | seen_b_u_newhead = 0; |
| 211 | seen_b_u_curhead = 0; |
| 212 | header_count = 0; |
| 213 | |
| 214 | u_check_tree(curbuf->b_u_oldhead, NULL, NULL); |
| 215 | |
| 216 | if (seen_b_u_newhead == 0 && curbuf->b_u_oldhead != NULL |
| 217 | && !(newhead_may_be_NULL && curbuf->b_u_newhead == NULL)) |
| 218 | EMSGN("b_u_newhead invalid: 0x%x", curbuf->b_u_newhead); |
| 219 | if (curbuf->b_u_curhead != NULL && seen_b_u_curhead == 0) |
| 220 | EMSGN("b_u_curhead invalid: 0x%x", curbuf->b_u_curhead); |
| 221 | if (header_count != curbuf->b_u_numhead) |
| 222 | { |
| 223 | EMSG("b_u_numhead invalid"); |
| 224 | smsg((char_u *)"expected: %ld, actual: %ld", |
| 225 | (long)header_count, (long)curbuf->b_u_numhead); |
| 226 | } |
| 227 | } |
| 228 | #endif |
| 229 | |
Bram Moolenaar | 071d427 | 2004-06-13 20:20:40 +0000 | [diff] [blame] | 230 | /* |
Bram Moolenaar | d857f0e | 2005-06-21 22:37:39 +0000 | [diff] [blame] | 231 | * Save the current line for both the "u" and "U" command. |
Bram Moolenaar | 687a29c | 2013-04-15 15:47:12 +0200 | [diff] [blame] | 232 | * Careful: may trigger autocommands that reload the buffer. |
Bram Moolenaar | d857f0e | 2005-06-21 22:37:39 +0000 | [diff] [blame] | 233 | * Returns OK or FAIL. |
Bram Moolenaar | 071d427 | 2004-06-13 20:20:40 +0000 | [diff] [blame] | 234 | */ |
| 235 | int |
Bram Moolenaar | 764b23c | 2016-01-30 21:10:09 +0100 | [diff] [blame] | 236 | u_save_cursor(void) |
Bram Moolenaar | 071d427 | 2004-06-13 20:20:40 +0000 | [diff] [blame] | 237 | { |
| 238 | return (u_save((linenr_T)(curwin->w_cursor.lnum - 1), |
| 239 | (linenr_T)(curwin->w_cursor.lnum + 1))); |
| 240 | } |
| 241 | |
| 242 | /* |
| 243 | * Save the lines between "top" and "bot" for both the "u" and "U" command. |
| 244 | * "top" may be 0 and bot may be curbuf->b_ml.ml_line_count + 1. |
Bram Moolenaar | d04b750 | 2010-07-08 22:27:55 +0200 | [diff] [blame] | 245 | * Careful: may trigger autocommands that reload the buffer. |
Bram Moolenaar | 071d427 | 2004-06-13 20:20:40 +0000 | [diff] [blame] | 246 | * Returns FAIL when lines could not be saved, OK otherwise. |
| 247 | */ |
| 248 | int |
Bram Moolenaar | 764b23c | 2016-01-30 21:10:09 +0100 | [diff] [blame] | 249 | u_save(linenr_T top, linenr_T bot) |
Bram Moolenaar | 071d427 | 2004-06-13 20:20:40 +0000 | [diff] [blame] | 250 | { |
| 251 | if (undo_off) |
| 252 | return OK; |
| 253 | |
Bram Moolenaar | efc8133 | 2018-07-13 16:31:19 +0200 | [diff] [blame] | 254 | if (top >= bot || bot > curbuf->b_ml.ml_line_count + 1) |
| 255 | return FAIL; // rely on caller to give an error message |
Bram Moolenaar | 071d427 | 2004-06-13 20:20:40 +0000 | [diff] [blame] | 256 | |
| 257 | if (top + 2 == bot) |
| 258 | u_saveline((linenr_T)(top + 1)); |
| 259 | |
Bram Moolenaar | 59f931e | 2010-07-24 20:27:03 +0200 | [diff] [blame] | 260 | return (u_savecommon(top, bot, (linenr_T)0, FALSE)); |
Bram Moolenaar | 071d427 | 2004-06-13 20:20:40 +0000 | [diff] [blame] | 261 | } |
| 262 | |
| 263 | /* |
Bram Moolenaar | fff2bee | 2010-05-15 13:56:02 +0200 | [diff] [blame] | 264 | * Save the line "lnum" (used by ":s" and "~" command). |
Bram Moolenaar | 071d427 | 2004-06-13 20:20:40 +0000 | [diff] [blame] | 265 | * The line is replaced, so the new bottom line is lnum + 1. |
Bram Moolenaar | d04b750 | 2010-07-08 22:27:55 +0200 | [diff] [blame] | 266 | * Careful: may trigger autocommands that reload the buffer. |
| 267 | * Returns FAIL when lines could not be saved, OK otherwise. |
Bram Moolenaar | 071d427 | 2004-06-13 20:20:40 +0000 | [diff] [blame] | 268 | */ |
| 269 | int |
Bram Moolenaar | 764b23c | 2016-01-30 21:10:09 +0100 | [diff] [blame] | 270 | u_savesub(linenr_T lnum) |
Bram Moolenaar | 071d427 | 2004-06-13 20:20:40 +0000 | [diff] [blame] | 271 | { |
| 272 | if (undo_off) |
| 273 | return OK; |
| 274 | |
Bram Moolenaar | 59f931e | 2010-07-24 20:27:03 +0200 | [diff] [blame] | 275 | return (u_savecommon(lnum - 1, lnum + 1, lnum + 1, FALSE)); |
Bram Moolenaar | 071d427 | 2004-06-13 20:20:40 +0000 | [diff] [blame] | 276 | } |
| 277 | |
| 278 | /* |
Bram Moolenaar | fff2bee | 2010-05-15 13:56:02 +0200 | [diff] [blame] | 279 | * A new line is inserted before line "lnum" (used by :s command). |
Bram Moolenaar | 071d427 | 2004-06-13 20:20:40 +0000 | [diff] [blame] | 280 | * The line is inserted, so the new bottom line is lnum + 1. |
Bram Moolenaar | d04b750 | 2010-07-08 22:27:55 +0200 | [diff] [blame] | 281 | * Careful: may trigger autocommands that reload the buffer. |
| 282 | * Returns FAIL when lines could not be saved, OK otherwise. |
Bram Moolenaar | 071d427 | 2004-06-13 20:20:40 +0000 | [diff] [blame] | 283 | */ |
| 284 | int |
Bram Moolenaar | 764b23c | 2016-01-30 21:10:09 +0100 | [diff] [blame] | 285 | u_inssub(linenr_T lnum) |
Bram Moolenaar | 071d427 | 2004-06-13 20:20:40 +0000 | [diff] [blame] | 286 | { |
| 287 | if (undo_off) |
| 288 | return OK; |
| 289 | |
Bram Moolenaar | 59f931e | 2010-07-24 20:27:03 +0200 | [diff] [blame] | 290 | return (u_savecommon(lnum - 1, lnum, lnum + 1, FALSE)); |
Bram Moolenaar | 071d427 | 2004-06-13 20:20:40 +0000 | [diff] [blame] | 291 | } |
| 292 | |
| 293 | /* |
Bram Moolenaar | fff2bee | 2010-05-15 13:56:02 +0200 | [diff] [blame] | 294 | * Save the lines "lnum" - "lnum" + nlines (used by delete command). |
Bram Moolenaar | 071d427 | 2004-06-13 20:20:40 +0000 | [diff] [blame] | 295 | * The lines are deleted, so the new bottom line is lnum, unless the buffer |
| 296 | * becomes empty. |
Bram Moolenaar | d04b750 | 2010-07-08 22:27:55 +0200 | [diff] [blame] | 297 | * Careful: may trigger autocommands that reload the buffer. |
| 298 | * Returns FAIL when lines could not be saved, OK otherwise. |
Bram Moolenaar | 071d427 | 2004-06-13 20:20:40 +0000 | [diff] [blame] | 299 | */ |
| 300 | int |
Bram Moolenaar | 764b23c | 2016-01-30 21:10:09 +0100 | [diff] [blame] | 301 | u_savedel(linenr_T lnum, long nlines) |
Bram Moolenaar | 071d427 | 2004-06-13 20:20:40 +0000 | [diff] [blame] | 302 | { |
| 303 | if (undo_off) |
| 304 | return OK; |
| 305 | |
| 306 | return (u_savecommon(lnum - 1, lnum + nlines, |
Bram Moolenaar | 59f931e | 2010-07-24 20:27:03 +0200 | [diff] [blame] | 307 | nlines == curbuf->b_ml.ml_line_count ? 2 : lnum, FALSE)); |
Bram Moolenaar | 071d427 | 2004-06-13 20:20:40 +0000 | [diff] [blame] | 308 | } |
| 309 | |
Bram Moolenaar | 8ada17c | 2006-01-19 22:16:24 +0000 | [diff] [blame] | 310 | /* |
| 311 | * Return TRUE when undo is allowed. Otherwise give an error message and |
| 312 | * return FALSE. |
| 313 | */ |
Bram Moolenaar | ce6ef25 | 2006-07-12 19:49:41 +0000 | [diff] [blame] | 314 | int |
Bram Moolenaar | 764b23c | 2016-01-30 21:10:09 +0100 | [diff] [blame] | 315 | undo_allowed(void) |
Bram Moolenaar | 8ada17c | 2006-01-19 22:16:24 +0000 | [diff] [blame] | 316 | { |
| 317 | /* Don't allow changes when 'modifiable' is off. */ |
| 318 | if (!curbuf->b_p_ma) |
| 319 | { |
| 320 | EMSG(_(e_modifiable)); |
| 321 | return FALSE; |
| 322 | } |
| 323 | |
| 324 | #ifdef HAVE_SANDBOX |
| 325 | /* In the sandbox it's not allowed to change the text. */ |
| 326 | if (sandbox != 0) |
| 327 | { |
| 328 | EMSG(_(e_sandbox)); |
| 329 | return FALSE; |
| 330 | } |
| 331 | #endif |
| 332 | |
| 333 | /* Don't allow changes in the buffer while editing the cmdline. The |
| 334 | * caller of getcmdline() may get confused. */ |
Bram Moolenaar | b71eaae | 2006-01-20 23:10:18 +0000 | [diff] [blame] | 335 | if (textlock != 0) |
Bram Moolenaar | 8ada17c | 2006-01-19 22:16:24 +0000 | [diff] [blame] | 336 | { |
| 337 | EMSG(_(e_secure)); |
| 338 | return FALSE; |
| 339 | } |
| 340 | |
| 341 | return TRUE; |
| 342 | } |
| 343 | |
Bram Moolenaar | b0b5088 | 2010-07-07 18:26:28 +0200 | [diff] [blame] | 344 | /* |
Bram Moolenaar | f5a2fd8 | 2013-11-06 05:26:15 +0100 | [diff] [blame] | 345 | * Get the undolevle value for the current buffer. |
| 346 | */ |
| 347 | static long |
Bram Moolenaar | 764b23c | 2016-01-30 21:10:09 +0100 | [diff] [blame] | 348 | get_undolevel(void) |
Bram Moolenaar | f5a2fd8 | 2013-11-06 05:26:15 +0100 | [diff] [blame] | 349 | { |
| 350 | if (curbuf->b_p_ul == NO_LOCAL_UNDOLEVEL) |
| 351 | return p_ul; |
| 352 | return curbuf->b_p_ul; |
| 353 | } |
| 354 | |
| 355 | /* |
Bram Moolenaar | b0b5088 | 2010-07-07 18:26:28 +0200 | [diff] [blame] | 356 | * Common code for various ways to save text before a change. |
Bram Moolenaar | d04b750 | 2010-07-08 22:27:55 +0200 | [diff] [blame] | 357 | * "top" is the line above the first changed line. |
| 358 | * "bot" is the line below the last changed line. |
Bram Moolenaar | 59f931e | 2010-07-24 20:27:03 +0200 | [diff] [blame] | 359 | * "newbot" is the new bottom line. Use zero when not known. |
| 360 | * "reload" is TRUE when saving for a buffer reload. |
Bram Moolenaar | d04b750 | 2010-07-08 22:27:55 +0200 | [diff] [blame] | 361 | * Careful: may trigger autocommands that reload the buffer. |
| 362 | * Returns FAIL when lines could not be saved, OK otherwise. |
Bram Moolenaar | b0b5088 | 2010-07-07 18:26:28 +0200 | [diff] [blame] | 363 | */ |
Bram Moolenaar | 59f931e | 2010-07-24 20:27:03 +0200 | [diff] [blame] | 364 | int |
Bram Moolenaar | 764b23c | 2016-01-30 21:10:09 +0100 | [diff] [blame] | 365 | u_savecommon( |
| 366 | linenr_T top, |
| 367 | linenr_T bot, |
| 368 | linenr_T newbot, |
| 369 | int reload) |
Bram Moolenaar | 071d427 | 2004-06-13 20:20:40 +0000 | [diff] [blame] | 370 | { |
Bram Moolenaar | 1e60789 | 2006-03-13 22:15:53 +0000 | [diff] [blame] | 371 | linenr_T lnum; |
| 372 | long i; |
| 373 | u_header_T *uhp; |
| 374 | u_header_T *old_curhead; |
| 375 | u_entry_T *uep; |
| 376 | u_entry_T *prev_uep; |
| 377 | long size; |
Bram Moolenaar | 071d427 | 2004-06-13 20:20:40 +0000 | [diff] [blame] | 378 | |
Bram Moolenaar | 59f931e | 2010-07-24 20:27:03 +0200 | [diff] [blame] | 379 | if (!reload) |
Bram Moolenaar | 071d427 | 2004-06-13 20:20:40 +0000 | [diff] [blame] | 380 | { |
Bram Moolenaar | 59f931e | 2010-07-24 20:27:03 +0200 | [diff] [blame] | 381 | /* When making changes is not allowed return FAIL. It's a crude way |
| 382 | * to make all change commands fail. */ |
| 383 | if (!undo_allowed()) |
Bram Moolenaar | 009b259 | 2004-10-24 19:18:58 +0000 | [diff] [blame] | 384 | return FAIL; |
Bram Moolenaar | 59f931e | 2010-07-24 20:27:03 +0200 | [diff] [blame] | 385 | |
| 386 | #ifdef FEAT_NETBEANS_INTG |
| 387 | /* |
| 388 | * Netbeans defines areas that cannot be modified. Bail out here when |
| 389 | * trying to change text in a guarded area. |
| 390 | */ |
| 391 | if (netbeans_active()) |
Bram Moolenaar | 009b259 | 2004-10-24 19:18:58 +0000 | [diff] [blame] | 392 | { |
Bram Moolenaar | 59f931e | 2010-07-24 20:27:03 +0200 | [diff] [blame] | 393 | if (netbeans_is_guarded(top, bot)) |
| 394 | { |
| 395 | EMSG(_(e_guarded)); |
| 396 | return FAIL; |
| 397 | } |
| 398 | if (curbuf->b_p_ro) |
| 399 | { |
| 400 | EMSG(_(e_nbreadonly)); |
| 401 | return FAIL; |
| 402 | } |
Bram Moolenaar | 009b259 | 2004-10-24 19:18:58 +0000 | [diff] [blame] | 403 | } |
Bram Moolenaar | 071d427 | 2004-06-13 20:20:40 +0000 | [diff] [blame] | 404 | #endif |
Bram Moolenaar | 63ecdda | 2017-07-28 22:29:35 +0200 | [diff] [blame] | 405 | #ifdef FEAT_TERMINAL |
| 406 | /* A change in a terminal buffer removes the highlighting. */ |
| 407 | term_change_in_curbuf(); |
| 408 | #endif |
Bram Moolenaar | 071d427 | 2004-06-13 20:20:40 +0000 | [diff] [blame] | 409 | |
Bram Moolenaar | 59f931e | 2010-07-24 20:27:03 +0200 | [diff] [blame] | 410 | /* |
| 411 | * Saving text for undo means we are going to make a change. Give a |
| 412 | * warning for a read-only file before making the change, so that the |
| 413 | * FileChangedRO event can replace the buffer with a read-write version |
| 414 | * (e.g., obtained from a source control system). |
| 415 | */ |
| 416 | change_warning(0); |
| 417 | if (bot > curbuf->b_ml.ml_line_count + 1) |
| 418 | { |
| 419 | /* This happens when the FileChangedRO autocommand changes the |
| 420 | * file in a way it becomes shorter. */ |
Bram Moolenaar | b4d587c | 2014-01-23 18:12:49 +0100 | [diff] [blame] | 421 | EMSG(_("E881: Line count changed unexpectedly")); |
Bram Moolenaar | 59f931e | 2010-07-24 20:27:03 +0200 | [diff] [blame] | 422 | return FAIL; |
| 423 | } |
Bram Moolenaar | d04b750 | 2010-07-08 22:27:55 +0200 | [diff] [blame] | 424 | } |
Bram Moolenaar | 59f931e | 2010-07-24 20:27:03 +0200 | [diff] [blame] | 425 | |
| 426 | #ifdef U_DEBUG |
| 427 | u_check(FALSE); |
Bram Moolenaar | 071d427 | 2004-06-13 20:20:40 +0000 | [diff] [blame] | 428 | #endif |
| 429 | |
| 430 | size = bot - top - 1; |
| 431 | |
| 432 | /* |
Bram Moolenaar | b0b5088 | 2010-07-07 18:26:28 +0200 | [diff] [blame] | 433 | * If curbuf->b_u_synced == TRUE make a new header. |
Bram Moolenaar | 071d427 | 2004-06-13 20:20:40 +0000 | [diff] [blame] | 434 | */ |
| 435 | if (curbuf->b_u_synced) |
| 436 | { |
| 437 | #ifdef FEAT_JUMPLIST |
| 438 | /* Need to create new entry in b_changelist. */ |
| 439 | curbuf->b_new_change = TRUE; |
| 440 | #endif |
| 441 | |
Bram Moolenaar | f5a2fd8 | 2013-11-06 05:26:15 +0100 | [diff] [blame] | 442 | if (get_undolevel() >= 0) |
Bram Moolenaar | 1e60789 | 2006-03-13 22:15:53 +0000 | [diff] [blame] | 443 | { |
| 444 | /* |
| 445 | * Make a new header entry. Do this first so that we don't mess |
| 446 | * up the undo info when out of memory. |
| 447 | */ |
Bram Moolenaar | f05e3b0 | 2010-05-29 15:40:47 +0200 | [diff] [blame] | 448 | uhp = (u_header_T *)U_ALLOC_LINE(sizeof(u_header_T)); |
Bram Moolenaar | 1e60789 | 2006-03-13 22:15:53 +0000 | [diff] [blame] | 449 | if (uhp == NULL) |
| 450 | goto nomem; |
Bram Moolenaar | fecb660 | 2007-10-01 20:54:15 +0000 | [diff] [blame] | 451 | #ifdef U_DEBUG |
| 452 | uhp->uh_magic = UH_MAGIC; |
| 453 | #endif |
Bram Moolenaar | 1e60789 | 2006-03-13 22:15:53 +0000 | [diff] [blame] | 454 | } |
Bram Moolenaar | 7d47b6e | 2006-03-15 22:59:18 +0000 | [diff] [blame] | 455 | else |
| 456 | uhp = NULL; |
Bram Moolenaar | 1e60789 | 2006-03-13 22:15:53 +0000 | [diff] [blame] | 457 | |
Bram Moolenaar | 071d427 | 2004-06-13 20:20:40 +0000 | [diff] [blame] | 458 | /* |
Bram Moolenaar | 1f4d4de | 2006-03-14 23:00:46 +0000 | [diff] [blame] | 459 | * If we undid more than we redid, move the entry lists before and |
| 460 | * including curbuf->b_u_curhead to an alternate branch. |
Bram Moolenaar | 071d427 | 2004-06-13 20:20:40 +0000 | [diff] [blame] | 461 | */ |
Bram Moolenaar | 1e60789 | 2006-03-13 22:15:53 +0000 | [diff] [blame] | 462 | old_curhead = curbuf->b_u_curhead; |
| 463 | if (old_curhead != NULL) |
| 464 | { |
Bram Moolenaar | 83d09bb | 2010-06-01 19:58:08 +0200 | [diff] [blame] | 465 | curbuf->b_u_newhead = old_curhead->uh_next.ptr; |
Bram Moolenaar | 1e60789 | 2006-03-13 22:15:53 +0000 | [diff] [blame] | 466 | curbuf->b_u_curhead = NULL; |
| 467 | } |
Bram Moolenaar | 071d427 | 2004-06-13 20:20:40 +0000 | [diff] [blame] | 468 | |
| 469 | /* |
| 470 | * free headers to keep the size right |
| 471 | */ |
Bram Moolenaar | f5a2fd8 | 2013-11-06 05:26:15 +0100 | [diff] [blame] | 472 | while (curbuf->b_u_numhead > get_undolevel() |
| 473 | && curbuf->b_u_oldhead != NULL) |
Bram Moolenaar | 1e60789 | 2006-03-13 22:15:53 +0000 | [diff] [blame] | 474 | { |
Bram Moolenaar | 1f4d4de | 2006-03-14 23:00:46 +0000 | [diff] [blame] | 475 | u_header_T *uhfree = curbuf->b_u_oldhead; |
Bram Moolenaar | 1e60789 | 2006-03-13 22:15:53 +0000 | [diff] [blame] | 476 | |
Bram Moolenaar | fecb660 | 2007-10-01 20:54:15 +0000 | [diff] [blame] | 477 | if (uhfree == old_curhead) |
| 478 | /* Can't reconnect the branch, delete all of it. */ |
| 479 | u_freebranch(curbuf, uhfree, &old_curhead); |
Bram Moolenaar | 83d09bb | 2010-06-01 19:58:08 +0200 | [diff] [blame] | 480 | else if (uhfree->uh_alt_next.ptr == NULL) |
Bram Moolenaar | fecb660 | 2007-10-01 20:54:15 +0000 | [diff] [blame] | 481 | /* There is no branch, only free one header. */ |
Bram Moolenaar | 1f4d4de | 2006-03-14 23:00:46 +0000 | [diff] [blame] | 482 | u_freeheader(curbuf, uhfree, &old_curhead); |
Bram Moolenaar | 1e60789 | 2006-03-13 22:15:53 +0000 | [diff] [blame] | 483 | else |
| 484 | { |
| 485 | /* Free the oldest alternate branch as a whole. */ |
Bram Moolenaar | 83d09bb | 2010-06-01 19:58:08 +0200 | [diff] [blame] | 486 | while (uhfree->uh_alt_next.ptr != NULL) |
| 487 | uhfree = uhfree->uh_alt_next.ptr; |
Bram Moolenaar | 1f4d4de | 2006-03-14 23:00:46 +0000 | [diff] [blame] | 488 | u_freebranch(curbuf, uhfree, &old_curhead); |
Bram Moolenaar | 1e60789 | 2006-03-13 22:15:53 +0000 | [diff] [blame] | 489 | } |
Bram Moolenaar | fecb660 | 2007-10-01 20:54:15 +0000 | [diff] [blame] | 490 | #ifdef U_DEBUG |
| 491 | u_check(TRUE); |
| 492 | #endif |
Bram Moolenaar | 1e60789 | 2006-03-13 22:15:53 +0000 | [diff] [blame] | 493 | } |
Bram Moolenaar | 071d427 | 2004-06-13 20:20:40 +0000 | [diff] [blame] | 494 | |
Bram Moolenaar | 7d47b6e | 2006-03-15 22:59:18 +0000 | [diff] [blame] | 495 | if (uhp == NULL) /* no undo at all */ |
Bram Moolenaar | 071d427 | 2004-06-13 20:20:40 +0000 | [diff] [blame] | 496 | { |
Bram Moolenaar | 1e60789 | 2006-03-13 22:15:53 +0000 | [diff] [blame] | 497 | if (old_curhead != NULL) |
| 498 | u_freebranch(curbuf, old_curhead, NULL); |
Bram Moolenaar | 071d427 | 2004-06-13 20:20:40 +0000 | [diff] [blame] | 499 | curbuf->b_u_synced = FALSE; |
| 500 | return OK; |
| 501 | } |
| 502 | |
Bram Moolenaar | 83d09bb | 2010-06-01 19:58:08 +0200 | [diff] [blame] | 503 | uhp->uh_prev.ptr = NULL; |
| 504 | uhp->uh_next.ptr = curbuf->b_u_newhead; |
| 505 | uhp->uh_alt_next.ptr = old_curhead; |
Bram Moolenaar | 1e60789 | 2006-03-13 22:15:53 +0000 | [diff] [blame] | 506 | if (old_curhead != NULL) |
| 507 | { |
Bram Moolenaar | 83d09bb | 2010-06-01 19:58:08 +0200 | [diff] [blame] | 508 | uhp->uh_alt_prev.ptr = old_curhead->uh_alt_prev.ptr; |
| 509 | if (uhp->uh_alt_prev.ptr != NULL) |
| 510 | uhp->uh_alt_prev.ptr->uh_alt_next.ptr = uhp; |
| 511 | old_curhead->uh_alt_prev.ptr = uhp; |
Bram Moolenaar | 1e60789 | 2006-03-13 22:15:53 +0000 | [diff] [blame] | 512 | if (curbuf->b_u_oldhead == old_curhead) |
| 513 | curbuf->b_u_oldhead = uhp; |
| 514 | } |
Bram Moolenaar | 89ed3df | 2007-01-09 19:23:12 +0000 | [diff] [blame] | 515 | else |
Bram Moolenaar | 83d09bb | 2010-06-01 19:58:08 +0200 | [diff] [blame] | 516 | uhp->uh_alt_prev.ptr = NULL; |
Bram Moolenaar | 071d427 | 2004-06-13 20:20:40 +0000 | [diff] [blame] | 517 | if (curbuf->b_u_newhead != NULL) |
Bram Moolenaar | 83d09bb | 2010-06-01 19:58:08 +0200 | [diff] [blame] | 518 | curbuf->b_u_newhead->uh_prev.ptr = uhp; |
Bram Moolenaar | 1f4d4de | 2006-03-14 23:00:46 +0000 | [diff] [blame] | 519 | |
Bram Moolenaar | ca003e1 | 2006-03-17 23:19:38 +0000 | [diff] [blame] | 520 | uhp->uh_seq = ++curbuf->b_u_seq_last; |
| 521 | curbuf->b_u_seq_cur = uhp->uh_seq; |
Bram Moolenaar | 170b10b | 2016-07-29 16:15:27 +0200 | [diff] [blame] | 522 | uhp->uh_time = vim_time(); |
Bram Moolenaar | a800b42 | 2010-06-27 01:15:55 +0200 | [diff] [blame] | 523 | uhp->uh_save_nr = 0; |
| 524 | curbuf->b_u_time_cur = uhp->uh_time + 1; |
Bram Moolenaar | 1f4d4de | 2006-03-14 23:00:46 +0000 | [diff] [blame] | 525 | |
Bram Moolenaar | 1e60789 | 2006-03-13 22:15:53 +0000 | [diff] [blame] | 526 | uhp->uh_walk = 0; |
Bram Moolenaar | 071d427 | 2004-06-13 20:20:40 +0000 | [diff] [blame] | 527 | uhp->uh_entry = NULL; |
| 528 | uhp->uh_getbot_entry = NULL; |
| 529 | uhp->uh_cursor = curwin->w_cursor; /* save cursor pos. for undo */ |
| 530 | #ifdef FEAT_VIRTUALEDIT |
| 531 | if (virtual_active() && curwin->w_cursor.coladd > 0) |
| 532 | uhp->uh_cursor_vcol = getviscol(); |
| 533 | else |
| 534 | uhp->uh_cursor_vcol = -1; |
| 535 | #endif |
| 536 | |
| 537 | /* save changed and buffer empty flag for undo */ |
| 538 | uhp->uh_flags = (curbuf->b_changed ? UH_CHANGED : 0) + |
| 539 | ((curbuf->b_ml.ml_flags & ML_EMPTY) ? UH_EMPTYBUF : 0); |
| 540 | |
Bram Moolenaar | a23ccb8 | 2006-02-27 00:08:02 +0000 | [diff] [blame] | 541 | /* save named marks and Visual marks for undo */ |
Bram Moolenaar | 071d427 | 2004-06-13 20:20:40 +0000 | [diff] [blame] | 542 | mch_memmove(uhp->uh_namedm, curbuf->b_namedm, sizeof(pos_T) * NMARKS); |
Bram Moolenaar | a23ccb8 | 2006-02-27 00:08:02 +0000 | [diff] [blame] | 543 | uhp->uh_visual = curbuf->b_visual; |
Bram Moolenaar | a23ccb8 | 2006-02-27 00:08:02 +0000 | [diff] [blame] | 544 | |
Bram Moolenaar | 071d427 | 2004-06-13 20:20:40 +0000 | [diff] [blame] | 545 | curbuf->b_u_newhead = uhp; |
| 546 | if (curbuf->b_u_oldhead == NULL) |
| 547 | curbuf->b_u_oldhead = uhp; |
| 548 | ++curbuf->b_u_numhead; |
| 549 | } |
| 550 | else |
| 551 | { |
Bram Moolenaar | f5a2fd8 | 2013-11-06 05:26:15 +0100 | [diff] [blame] | 552 | if (get_undolevel() < 0) /* no undo at all */ |
Bram Moolenaar | 071d427 | 2004-06-13 20:20:40 +0000 | [diff] [blame] | 553 | return OK; |
| 554 | |
| 555 | /* |
| 556 | * When saving a single line, and it has been saved just before, it |
| 557 | * doesn't make sense saving it again. Saves a lot of memory when |
| 558 | * making lots of changes inside the same line. |
| 559 | * This is only possible if the previous change didn't increase or |
| 560 | * decrease the number of lines. |
| 561 | * Check the ten last changes. More doesn't make sense and takes too |
| 562 | * long. |
| 563 | */ |
| 564 | if (size == 1) |
| 565 | { |
| 566 | uep = u_get_headentry(); |
| 567 | prev_uep = NULL; |
| 568 | for (i = 0; i < 10; ++i) |
| 569 | { |
| 570 | if (uep == NULL) |
| 571 | break; |
| 572 | |
| 573 | /* If lines have been inserted/deleted we give up. |
| 574 | * Also when the line was included in a multi-line save. */ |
| 575 | if ((curbuf->b_u_newhead->uh_getbot_entry != uep |
| 576 | ? (uep->ue_top + uep->ue_size + 1 |
| 577 | != (uep->ue_bot == 0 |
| 578 | ? curbuf->b_ml.ml_line_count + 1 |
| 579 | : uep->ue_bot)) |
| 580 | : uep->ue_lcount != curbuf->b_ml.ml_line_count) |
| 581 | || (uep->ue_size > 1 |
| 582 | && top >= uep->ue_top |
| 583 | && top + 2 <= uep->ue_top + uep->ue_size + 1)) |
| 584 | break; |
| 585 | |
| 586 | /* If it's the same line we can skip saving it again. */ |
| 587 | if (uep->ue_size == 1 && uep->ue_top == top) |
| 588 | { |
| 589 | if (i > 0) |
| 590 | { |
| 591 | /* It's not the last entry: get ue_bot for the last |
| 592 | * entry now. Following deleted/inserted lines go to |
| 593 | * the re-used entry. */ |
| 594 | u_getbot(); |
| 595 | curbuf->b_u_synced = FALSE; |
| 596 | |
| 597 | /* Move the found entry to become the last entry. The |
| 598 | * order of undo/redo doesn't matter for the entries |
| 599 | * we move it over, since they don't change the line |
| 600 | * count and don't include this line. It does matter |
| 601 | * for the found entry if the line count is changed by |
| 602 | * the executed command. */ |
| 603 | prev_uep->ue_next = uep->ue_next; |
| 604 | uep->ue_next = curbuf->b_u_newhead->uh_entry; |
| 605 | curbuf->b_u_newhead->uh_entry = uep; |
| 606 | } |
| 607 | |
| 608 | /* The executed command may change the line count. */ |
| 609 | if (newbot != 0) |
| 610 | uep->ue_bot = newbot; |
| 611 | else if (bot > curbuf->b_ml.ml_line_count) |
| 612 | uep->ue_bot = 0; |
| 613 | else |
| 614 | { |
| 615 | uep->ue_lcount = curbuf->b_ml.ml_line_count; |
| 616 | curbuf->b_u_newhead->uh_getbot_entry = uep; |
| 617 | } |
| 618 | return OK; |
| 619 | } |
| 620 | prev_uep = uep; |
| 621 | uep = uep->ue_next; |
| 622 | } |
| 623 | } |
| 624 | |
| 625 | /* find line number for ue_bot for previous u_save() */ |
| 626 | u_getbot(); |
| 627 | } |
| 628 | |
Bram Moolenaar | a06ecab | 2016-07-16 14:47:36 +0200 | [diff] [blame] | 629 | #if !defined(UNIX) && !defined(WIN32) |
Bram Moolenaar | 071d427 | 2004-06-13 20:20:40 +0000 | [diff] [blame] | 630 | /* |
Bram Moolenaar | 48e330a | 2016-02-23 14:53:34 +0100 | [diff] [blame] | 631 | * With Amiga we can't handle big undo's, because |
Bram Moolenaar | 071d427 | 2004-06-13 20:20:40 +0000 | [diff] [blame] | 632 | * then u_alloc_line would have to allocate a block larger than 32K |
| 633 | */ |
| 634 | if (size >= 8000) |
| 635 | goto nomem; |
| 636 | #endif |
| 637 | |
| 638 | /* |
| 639 | * add lines in front of entry list |
| 640 | */ |
Bram Moolenaar | f05e3b0 | 2010-05-29 15:40:47 +0200 | [diff] [blame] | 641 | uep = (u_entry_T *)U_ALLOC_LINE(sizeof(u_entry_T)); |
Bram Moolenaar | 071d427 | 2004-06-13 20:20:40 +0000 | [diff] [blame] | 642 | if (uep == NULL) |
| 643 | goto nomem; |
Bram Moolenaar | 7db5fc8 | 2010-05-24 11:59:29 +0200 | [diff] [blame] | 644 | vim_memset(uep, 0, sizeof(u_entry_T)); |
Bram Moolenaar | fecb660 | 2007-10-01 20:54:15 +0000 | [diff] [blame] | 645 | #ifdef U_DEBUG |
| 646 | uep->ue_magic = UE_MAGIC; |
| 647 | #endif |
Bram Moolenaar | 071d427 | 2004-06-13 20:20:40 +0000 | [diff] [blame] | 648 | |
| 649 | uep->ue_size = size; |
| 650 | uep->ue_top = top; |
| 651 | if (newbot != 0) |
| 652 | uep->ue_bot = newbot; |
| 653 | /* |
| 654 | * Use 0 for ue_bot if bot is below last line. |
| 655 | * Otherwise we have to compute ue_bot later. |
| 656 | */ |
| 657 | else if (bot > curbuf->b_ml.ml_line_count) |
| 658 | uep->ue_bot = 0; |
| 659 | else |
| 660 | { |
| 661 | uep->ue_lcount = curbuf->b_ml.ml_line_count; |
| 662 | curbuf->b_u_newhead->uh_getbot_entry = uep; |
| 663 | } |
| 664 | |
Bram Moolenaar | 26a60b4 | 2005-02-22 08:49:11 +0000 | [diff] [blame] | 665 | if (size > 0) |
Bram Moolenaar | 071d427 | 2004-06-13 20:20:40 +0000 | [diff] [blame] | 666 | { |
Bram Moolenaar | 26a60b4 | 2005-02-22 08:49:11 +0000 | [diff] [blame] | 667 | if ((uep->ue_array = (char_u **)U_ALLOC_LINE( |
Bram Moolenaar | f05e3b0 | 2010-05-29 15:40:47 +0200 | [diff] [blame] | 668 | sizeof(char_u *) * size)) == NULL) |
Bram Moolenaar | 071d427 | 2004-06-13 20:20:40 +0000 | [diff] [blame] | 669 | { |
| 670 | u_freeentry(uep, 0L); |
| 671 | goto nomem; |
| 672 | } |
| 673 | for (i = 0, lnum = top + 1; i < size; ++i) |
| 674 | { |
Bram Moolenaar | ae5bce1 | 2005-08-15 21:41:48 +0000 | [diff] [blame] | 675 | fast_breakcheck(); |
| 676 | if (got_int) |
| 677 | { |
| 678 | u_freeentry(uep, i); |
| 679 | return FAIL; |
| 680 | } |
Bram Moolenaar | 071d427 | 2004-06-13 20:20:40 +0000 | [diff] [blame] | 681 | if ((uep->ue_array[i] = u_save_line(lnum++)) == NULL) |
| 682 | { |
| 683 | u_freeentry(uep, i); |
| 684 | goto nomem; |
| 685 | } |
| 686 | } |
| 687 | } |
Bram Moolenaar | f461c8e | 2005-06-25 23:04:51 +0000 | [diff] [blame] | 688 | else |
| 689 | uep->ue_array = NULL; |
Bram Moolenaar | 071d427 | 2004-06-13 20:20:40 +0000 | [diff] [blame] | 690 | uep->ue_next = curbuf->b_u_newhead->uh_entry; |
| 691 | curbuf->b_u_newhead->uh_entry = uep; |
| 692 | curbuf->b_u_synced = FALSE; |
| 693 | undo_undoes = FALSE; |
| 694 | |
Bram Moolenaar | fecb660 | 2007-10-01 20:54:15 +0000 | [diff] [blame] | 695 | #ifdef U_DEBUG |
| 696 | u_check(FALSE); |
| 697 | #endif |
Bram Moolenaar | 071d427 | 2004-06-13 20:20:40 +0000 | [diff] [blame] | 698 | return OK; |
| 699 | |
| 700 | nomem: |
| 701 | msg_silent = 0; /* must display the prompt */ |
| 702 | if (ask_yesno((char_u *)_("No undo possible; continue anyway"), TRUE) |
| 703 | == 'y') |
| 704 | { |
| 705 | undo_off = TRUE; /* will be reset when character typed */ |
| 706 | return OK; |
| 707 | } |
| 708 | do_outofmem_msg((long_u)0); |
| 709 | return FAIL; |
| 710 | } |
| 711 | |
Bram Moolenaar | 191e0a2 | 2010-06-14 01:39:13 +0200 | [diff] [blame] | 712 | #if defined(FEAT_PERSISTENT_UNDO) || defined(PROTO) |
Bram Moolenaar | 55debbe | 2010-05-23 23:34:36 +0200 | [diff] [blame] | 713 | |
Bram Moolenaar | 9db5806 | 2010-05-29 20:33:07 +0200 | [diff] [blame] | 714 | # define UF_START_MAGIC "Vim\237UnDo\345" /* magic at start of undofile */ |
| 715 | # define UF_START_MAGIC_LEN 9 |
| 716 | # define UF_HEADER_MAGIC 0x5fd0 /* magic at start of header */ |
| 717 | # define UF_HEADER_END_MAGIC 0xe7aa /* magic after last header */ |
| 718 | # define UF_ENTRY_MAGIC 0xf518 /* magic at start of entry */ |
| 719 | # define UF_ENTRY_END_MAGIC 0x3581 /* magic after last entry */ |
Bram Moolenaar | a800b42 | 2010-06-27 01:15:55 +0200 | [diff] [blame] | 720 | # define UF_VERSION 2 /* 2-byte undofile version number */ |
Bram Moolenaar | a800b42 | 2010-06-27 01:15:55 +0200 | [diff] [blame] | 721 | # define UF_VERSION_CRYPT 0x8002 /* idem, encrypted */ |
| 722 | |
| 723 | /* extra fields for header */ |
| 724 | # define UF_LAST_SAVE_NR 1 |
| 725 | |
| 726 | /* extra fields for uhp */ |
| 727 | # define UHP_SAVE_NR 1 |
Bram Moolenaar | 55debbe | 2010-05-23 23:34:36 +0200 | [diff] [blame] | 728 | |
Bram Moolenaar | cdf0420 | 2010-05-29 15:11:47 +0200 | [diff] [blame] | 729 | static char_u e_not_open[] = N_("E828: Cannot open undo file for writing: %s"); |
Bram Moolenaar | cdf0420 | 2010-05-29 15:11:47 +0200 | [diff] [blame] | 730 | |
Bram Moolenaar | 55debbe | 2010-05-23 23:34:36 +0200 | [diff] [blame] | 731 | /* |
| 732 | * Compute the hash for the current buffer text into hash[UNDO_HASH_SIZE]. |
| 733 | */ |
| 734 | void |
Bram Moolenaar | 764b23c | 2016-01-30 21:10:09 +0100 | [diff] [blame] | 735 | u_compute_hash(char_u *hash) |
Bram Moolenaar | 55debbe | 2010-05-23 23:34:36 +0200 | [diff] [blame] | 736 | { |
| 737 | context_sha256_T ctx; |
| 738 | linenr_T lnum; |
| 739 | char_u *p; |
| 740 | |
| 741 | sha256_start(&ctx); |
Bram Moolenaar | ae7ba98 | 2011-12-08 15:14:09 +0100 | [diff] [blame] | 742 | for (lnum = 1; lnum <= curbuf->b_ml.ml_line_count; ++lnum) |
Bram Moolenaar | 55debbe | 2010-05-23 23:34:36 +0200 | [diff] [blame] | 743 | { |
| 744 | p = ml_get(lnum); |
Bram Moolenaar | 442b422 | 2010-05-24 21:34:22 +0200 | [diff] [blame] | 745 | sha256_update(&ctx, p, (UINT32_T)(STRLEN(p) + 1)); |
Bram Moolenaar | 55debbe | 2010-05-23 23:34:36 +0200 | [diff] [blame] | 746 | } |
| 747 | sha256_finish(&ctx, hash); |
| 748 | } |
| 749 | |
| 750 | /* |
Bram Moolenaar | 55debbe | 2010-05-23 23:34:36 +0200 | [diff] [blame] | 751 | * Return an allocated string of the full path of the target undofile. |
| 752 | * When "reading" is TRUE find the file to read, go over all directories in |
| 753 | * 'undodir'. |
| 754 | * When "reading" is FALSE use the first name where the directory exists. |
Bram Moolenaar | 9db5806 | 2010-05-29 20:33:07 +0200 | [diff] [blame] | 755 | * Returns NULL when there is no place to write or no file to read. |
Bram Moolenaar | 55debbe | 2010-05-23 23:34:36 +0200 | [diff] [blame] | 756 | */ |
Bram Moolenaar | a17d4c1 | 2010-05-30 18:30:36 +0200 | [diff] [blame] | 757 | char_u * |
Bram Moolenaar | 764b23c | 2016-01-30 21:10:09 +0100 | [diff] [blame] | 758 | u_get_undo_file_name(char_u *buf_ffname, int reading) |
Bram Moolenaar | 55debbe | 2010-05-23 23:34:36 +0200 | [diff] [blame] | 759 | { |
| 760 | char_u *dirp; |
| 761 | char_u dir_name[IOSIZE + 1]; |
| 762 | char_u *munged_name = NULL; |
| 763 | char_u *undo_file_name = NULL; |
| 764 | int dir_len; |
| 765 | char_u *p; |
Bram Moolenaar | 8767f52 | 2016-07-01 17:17:39 +0200 | [diff] [blame] | 766 | stat_T st; |
Bram Moolenaar | 55debbe | 2010-05-23 23:34:36 +0200 | [diff] [blame] | 767 | char_u *ffname = buf_ffname; |
| 768 | #ifdef HAVE_READLINK |
| 769 | char_u fname_buf[MAXPATHL]; |
| 770 | #endif |
| 771 | |
| 772 | if (ffname == NULL) |
| 773 | return NULL; |
| 774 | |
| 775 | #ifdef HAVE_READLINK |
| 776 | /* Expand symlink in the file name, so that we put the undo file with the |
| 777 | * actual file instead of with the symlink. */ |
| 778 | if (resolve_symlink(ffname, fname_buf) == OK) |
| 779 | ffname = fname_buf; |
| 780 | #endif |
| 781 | |
| 782 | /* Loop over 'undodir'. When reading find the first file that exists. |
| 783 | * When not reading use the first directory that exists or ".". */ |
| 784 | dirp = p_udir; |
| 785 | while (*dirp != NUL) |
| 786 | { |
Bram Moolenaar | cc448b3 | 2010-07-14 16:52:17 +0200 | [diff] [blame] | 787 | dir_len = copy_option_part(&dirp, dir_name, IOSIZE, ","); |
Bram Moolenaar | 55debbe | 2010-05-23 23:34:36 +0200 | [diff] [blame] | 788 | if (dir_len == 1 && dir_name[0] == '.') |
| 789 | { |
| 790 | /* Use same directory as the ffname, |
| 791 | * "dir/name" -> "dir/.name.un~" */ |
Bram Moolenaar | 442b422 | 2010-05-24 21:34:22 +0200 | [diff] [blame] | 792 | undo_file_name = vim_strnsave(ffname, (int)(STRLEN(ffname) + 5)); |
Bram Moolenaar | 55debbe | 2010-05-23 23:34:36 +0200 | [diff] [blame] | 793 | if (undo_file_name == NULL) |
| 794 | break; |
| 795 | p = gettail(undo_file_name); |
Bram Moolenaar | 206f011 | 2014-03-12 16:51:55 +0100 | [diff] [blame] | 796 | #ifdef VMS |
| 797 | /* VMS can not handle more than one dot in the filenames |
| 798 | * use "dir/name" -> "dir/_un_name" - add _un_ |
| 799 | * at the beginning to keep the extension */ |
| 800 | mch_memmove(p + 4, p, STRLEN(p) + 1); |
| 801 | mch_memmove(p, "_un_", 4); |
| 802 | |
| 803 | #else |
| 804 | /* Use same directory as the ffname, |
| 805 | * "dir/name" -> "dir/.name.un~" */ |
Bram Moolenaar | 55debbe | 2010-05-23 23:34:36 +0200 | [diff] [blame] | 806 | mch_memmove(p + 1, p, STRLEN(p) + 1); |
| 807 | *p = '.'; |
| 808 | STRCAT(p, ".un~"); |
Bram Moolenaar | 206f011 | 2014-03-12 16:51:55 +0100 | [diff] [blame] | 809 | #endif |
Bram Moolenaar | 55debbe | 2010-05-23 23:34:36 +0200 | [diff] [blame] | 810 | } |
| 811 | else |
| 812 | { |
| 813 | dir_name[dir_len] = NUL; |
| 814 | if (mch_isdir(dir_name)) |
| 815 | { |
| 816 | if (munged_name == NULL) |
| 817 | { |
| 818 | munged_name = vim_strsave(ffname); |
| 819 | if (munged_name == NULL) |
| 820 | return NULL; |
Bram Moolenaar | 91acfff | 2017-03-12 19:22:36 +0100 | [diff] [blame] | 821 | for (p = munged_name; *p != NUL; MB_PTR_ADV(p)) |
Bram Moolenaar | 55debbe | 2010-05-23 23:34:36 +0200 | [diff] [blame] | 822 | if (vim_ispathsep(*p)) |
| 823 | *p = '%'; |
| 824 | } |
| 825 | undo_file_name = concat_fnames(dir_name, munged_name, TRUE); |
| 826 | } |
| 827 | } |
| 828 | |
| 829 | /* When reading check if the file exists. */ |
| 830 | if (undo_file_name != NULL && (!reading |
| 831 | || mch_stat((char *)undo_file_name, &st) >= 0)) |
| 832 | break; |
Bram Moolenaar | d23a823 | 2018-02-10 18:45:26 +0100 | [diff] [blame] | 833 | VIM_CLEAR(undo_file_name); |
Bram Moolenaar | 55debbe | 2010-05-23 23:34:36 +0200 | [diff] [blame] | 834 | } |
| 835 | |
| 836 | vim_free(munged_name); |
| 837 | return undo_file_name; |
| 838 | } |
| 839 | |
Bram Moolenaar | 9db5806 | 2010-05-29 20:33:07 +0200 | [diff] [blame] | 840 | static void |
Bram Moolenaar | 764b23c | 2016-01-30 21:10:09 +0100 | [diff] [blame] | 841 | corruption_error(char *mesg, char_u *file_name) |
Bram Moolenaar | 9db5806 | 2010-05-29 20:33:07 +0200 | [diff] [blame] | 842 | { |
Bram Moolenaar | f506c5b | 2010-06-22 06:28:58 +0200 | [diff] [blame] | 843 | EMSG3(_("E825: Corrupted undo file (%s): %s"), mesg, file_name); |
Bram Moolenaar | 9db5806 | 2010-05-29 20:33:07 +0200 | [diff] [blame] | 844 | } |
| 845 | |
| 846 | static void |
Bram Moolenaar | 764b23c | 2016-01-30 21:10:09 +0100 | [diff] [blame] | 847 | u_free_uhp(u_header_T *uhp) |
Bram Moolenaar | 9db5806 | 2010-05-29 20:33:07 +0200 | [diff] [blame] | 848 | { |
| 849 | u_entry_T *nuep; |
| 850 | u_entry_T *uep; |
| 851 | |
| 852 | uep = uhp->uh_entry; |
| 853 | while (uep != NULL) |
| 854 | { |
| 855 | nuep = uep->ue_next; |
| 856 | u_freeentry(uep, uep->ue_size); |
| 857 | uep = nuep; |
| 858 | } |
| 859 | vim_free(uhp); |
| 860 | } |
| 861 | |
Bram Moolenaar | 191e0a2 | 2010-06-14 01:39:13 +0200 | [diff] [blame] | 862 | /* |
Bram Moolenaar | 8f4ac01 | 2014-08-10 13:38:34 +0200 | [diff] [blame] | 863 | * Write a sequence of bytes to the undo file. |
| 864 | * Buffers and encrypts as needed. |
| 865 | * Returns OK or FAIL. |
Bram Moolenaar | 191e0a2 | 2010-06-14 01:39:13 +0200 | [diff] [blame] | 866 | */ |
Bram Moolenaar | 8f4ac01 | 2014-08-10 13:38:34 +0200 | [diff] [blame] | 867 | static int |
Bram Moolenaar | 764b23c | 2016-01-30 21:10:09 +0100 | [diff] [blame] | 868 | undo_write(bufinfo_T *bi, char_u *ptr, size_t len) |
Bram Moolenaar | 8f4ac01 | 2014-08-10 13:38:34 +0200 | [diff] [blame] | 869 | { |
| 870 | #ifdef FEAT_CRYPT |
| 871 | if (bi->bi_buffer != NULL) |
| 872 | { |
| 873 | size_t len_todo = len; |
| 874 | char_u *p = ptr; |
| 875 | |
| 876 | while (bi->bi_used + len_todo >= CRYPT_BUF_SIZE) |
| 877 | { |
| 878 | size_t n = CRYPT_BUF_SIZE - bi->bi_used; |
| 879 | |
| 880 | mch_memmove(bi->bi_buffer + bi->bi_used, p, n); |
| 881 | len_todo -= n; |
| 882 | p += n; |
| 883 | bi->bi_used = CRYPT_BUF_SIZE; |
| 884 | if (undo_flush(bi) == FAIL) |
| 885 | return FAIL; |
| 886 | } |
| 887 | if (len_todo > 0) |
| 888 | { |
| 889 | mch_memmove(bi->bi_buffer + bi->bi_used, p, len_todo); |
| 890 | bi->bi_used += len_todo; |
| 891 | } |
| 892 | return OK; |
| 893 | } |
| 894 | #endif |
| 895 | if (fwrite(ptr, len, (size_t)1, bi->bi_fp) != 1) |
| 896 | return FAIL; |
| 897 | return OK; |
| 898 | } |
| 899 | |
| 900 | #ifdef FEAT_CRYPT |
| 901 | static int |
Bram Moolenaar | 764b23c | 2016-01-30 21:10:09 +0100 | [diff] [blame] | 902 | undo_flush(bufinfo_T *bi) |
Bram Moolenaar | 8f4ac01 | 2014-08-10 13:38:34 +0200 | [diff] [blame] | 903 | { |
Bram Moolenaar | 829aa64 | 2017-08-23 22:32:35 +0200 | [diff] [blame] | 904 | if (bi->bi_buffer != NULL && bi->bi_state != NULL && bi->bi_used > 0) |
Bram Moolenaar | 8f4ac01 | 2014-08-10 13:38:34 +0200 | [diff] [blame] | 905 | { |
| 906 | crypt_encode_inplace(bi->bi_state, bi->bi_buffer, bi->bi_used); |
| 907 | if (fwrite(bi->bi_buffer, bi->bi_used, (size_t)1, bi->bi_fp) != 1) |
| 908 | return FAIL; |
| 909 | bi->bi_used = 0; |
| 910 | } |
| 911 | return OK; |
| 912 | } |
| 913 | #endif |
| 914 | |
| 915 | /* |
| 916 | * Write "ptr[len]" and crypt the bytes when needed. |
| 917 | * Returns OK or FAIL. |
| 918 | */ |
| 919 | static int |
Bram Moolenaar | 764b23c | 2016-01-30 21:10:09 +0100 | [diff] [blame] | 920 | fwrite_crypt(bufinfo_T *bi, char_u *ptr, size_t len) |
Bram Moolenaar | 191e0a2 | 2010-06-14 01:39:13 +0200 | [diff] [blame] | 921 | { |
| 922 | #ifdef FEAT_CRYPT |
| 923 | char_u *copy; |
| 924 | char_u small_buf[100]; |
| 925 | size_t i; |
| 926 | |
Bram Moolenaar | 8f4ac01 | 2014-08-10 13:38:34 +0200 | [diff] [blame] | 927 | if (bi->bi_state != NULL && bi->bi_buffer == NULL) |
Bram Moolenaar | 191e0a2 | 2010-06-14 01:39:13 +0200 | [diff] [blame] | 928 | { |
Bram Moolenaar | 8f4ac01 | 2014-08-10 13:38:34 +0200 | [diff] [blame] | 929 | /* crypting every piece of text separately */ |
| 930 | if (len < 100) |
| 931 | copy = small_buf; /* no malloc()/free() for short strings */ |
| 932 | else |
| 933 | { |
| 934 | copy = lalloc(len, FALSE); |
| 935 | if (copy == NULL) |
| 936 | return 0; |
| 937 | } |
| 938 | crypt_encode(bi->bi_state, ptr, len, copy); |
| 939 | i = fwrite(copy, len, (size_t)1, bi->bi_fp); |
| 940 | if (copy != small_buf) |
| 941 | vim_free(copy); |
| 942 | return i == 1 ? OK : FAIL; |
Bram Moolenaar | 191e0a2 | 2010-06-14 01:39:13 +0200 | [diff] [blame] | 943 | } |
Bram Moolenaar | 191e0a2 | 2010-06-14 01:39:13 +0200 | [diff] [blame] | 944 | #endif |
Bram Moolenaar | 8f4ac01 | 2014-08-10 13:38:34 +0200 | [diff] [blame] | 945 | return undo_write(bi, ptr, len); |
Bram Moolenaar | 191e0a2 | 2010-06-14 01:39:13 +0200 | [diff] [blame] | 946 | } |
| 947 | |
| 948 | /* |
Bram Moolenaar | 8f4ac01 | 2014-08-10 13:38:34 +0200 | [diff] [blame] | 949 | * Write a number, MSB first, in "len" bytes. |
| 950 | * Must match with undo_read_?c() functions. |
| 951 | * Returns OK or FAIL. |
Bram Moolenaar | 191e0a2 | 2010-06-14 01:39:13 +0200 | [diff] [blame] | 952 | */ |
Bram Moolenaar | 8f4ac01 | 2014-08-10 13:38:34 +0200 | [diff] [blame] | 953 | static int |
Bram Moolenaar | 764b23c | 2016-01-30 21:10:09 +0100 | [diff] [blame] | 954 | undo_write_bytes(bufinfo_T *bi, long_u nr, int len) |
Bram Moolenaar | 191e0a2 | 2010-06-14 01:39:13 +0200 | [diff] [blame] | 955 | { |
Bram Moolenaar | 8f4ac01 | 2014-08-10 13:38:34 +0200 | [diff] [blame] | 956 | char_u buf[8]; |
| 957 | int i; |
| 958 | int bufi = 0; |
Bram Moolenaar | 191e0a2 | 2010-06-14 01:39:13 +0200 | [diff] [blame] | 959 | |
Bram Moolenaar | 8f4ac01 | 2014-08-10 13:38:34 +0200 | [diff] [blame] | 960 | for (i = len - 1; i >= 0; --i) |
Bram Moolenaar | 9b8f021 | 2014-08-13 22:05:53 +0200 | [diff] [blame] | 961 | buf[bufi++] = (char_u)(nr >> (i * 8)); |
Bram Moolenaar | 8f4ac01 | 2014-08-10 13:38:34 +0200 | [diff] [blame] | 962 | return undo_write(bi, buf, (size_t)len); |
| 963 | } |
| 964 | |
| 965 | /* |
| 966 | * Write the pointer to an undo header. Instead of writing the pointer itself |
| 967 | * we use the sequence number of the header. This is converted back to |
| 968 | * pointers when reading. */ |
| 969 | static void |
Bram Moolenaar | 764b23c | 2016-01-30 21:10:09 +0100 | [diff] [blame] | 970 | put_header_ptr(bufinfo_T *bi, u_header_T *uhp) |
Bram Moolenaar | 8f4ac01 | 2014-08-10 13:38:34 +0200 | [diff] [blame] | 971 | { |
| 972 | undo_write_bytes(bi, (long_u)(uhp != NULL ? uhp->uh_seq : 0), 4); |
Bram Moolenaar | 191e0a2 | 2010-06-14 01:39:13 +0200 | [diff] [blame] | 973 | } |
| 974 | |
Bram Moolenaar | 6ed8ed8 | 2010-05-30 20:40:11 +0200 | [diff] [blame] | 975 | static int |
Bram Moolenaar | 764b23c | 2016-01-30 21:10:09 +0100 | [diff] [blame] | 976 | undo_read_4c(bufinfo_T *bi) |
Bram Moolenaar | 8f4ac01 | 2014-08-10 13:38:34 +0200 | [diff] [blame] | 977 | { |
| 978 | #ifdef FEAT_CRYPT |
| 979 | if (bi->bi_buffer != NULL) |
| 980 | { |
| 981 | char_u buf[4]; |
| 982 | int n; |
| 983 | |
| 984 | undo_read(bi, buf, (size_t)4); |
Bram Moolenaar | 3516928 | 2014-09-11 22:50:09 +0200 | [diff] [blame] | 985 | n = ((unsigned)buf[0] << 24) + (buf[1] << 16) + (buf[2] << 8) + buf[3]; |
Bram Moolenaar | 8f4ac01 | 2014-08-10 13:38:34 +0200 | [diff] [blame] | 986 | return n; |
| 987 | } |
| 988 | #endif |
| 989 | return get4c(bi->bi_fp); |
| 990 | } |
| 991 | |
| 992 | static int |
Bram Moolenaar | 764b23c | 2016-01-30 21:10:09 +0100 | [diff] [blame] | 993 | undo_read_2c(bufinfo_T *bi) |
Bram Moolenaar | 8f4ac01 | 2014-08-10 13:38:34 +0200 | [diff] [blame] | 994 | { |
| 995 | #ifdef FEAT_CRYPT |
| 996 | if (bi->bi_buffer != NULL) |
| 997 | { |
| 998 | char_u buf[2]; |
| 999 | int n; |
| 1000 | |
| 1001 | undo_read(bi, buf, (size_t)2); |
| 1002 | n = (buf[0] << 8) + buf[1]; |
| 1003 | return n; |
| 1004 | } |
| 1005 | #endif |
| 1006 | return get2c(bi->bi_fp); |
| 1007 | } |
| 1008 | |
| 1009 | static int |
Bram Moolenaar | 764b23c | 2016-01-30 21:10:09 +0100 | [diff] [blame] | 1010 | undo_read_byte(bufinfo_T *bi) |
Bram Moolenaar | 8f4ac01 | 2014-08-10 13:38:34 +0200 | [diff] [blame] | 1011 | { |
| 1012 | #ifdef FEAT_CRYPT |
| 1013 | if (bi->bi_buffer != NULL) |
| 1014 | { |
| 1015 | char_u buf[1]; |
| 1016 | |
| 1017 | undo_read(bi, buf, (size_t)1); |
| 1018 | return buf[0]; |
| 1019 | } |
| 1020 | #endif |
| 1021 | return getc(bi->bi_fp); |
| 1022 | } |
| 1023 | |
| 1024 | static time_t |
Bram Moolenaar | 764b23c | 2016-01-30 21:10:09 +0100 | [diff] [blame] | 1025 | undo_read_time(bufinfo_T *bi) |
Bram Moolenaar | 8f4ac01 | 2014-08-10 13:38:34 +0200 | [diff] [blame] | 1026 | { |
| 1027 | #ifdef FEAT_CRYPT |
| 1028 | if (bi->bi_buffer != NULL) |
| 1029 | { |
| 1030 | char_u buf[8]; |
| 1031 | time_t n = 0; |
| 1032 | int i; |
| 1033 | |
| 1034 | undo_read(bi, buf, (size_t)8); |
| 1035 | for (i = 0; i < 8; ++i) |
| 1036 | n = (n << 8) + buf[i]; |
| 1037 | return n; |
| 1038 | } |
| 1039 | #endif |
| 1040 | return get8ctime(bi->bi_fp); |
| 1041 | } |
| 1042 | |
| 1043 | /* |
| 1044 | * Read "buffer[size]" from the undo file. |
| 1045 | * Return OK or FAIL. |
| 1046 | */ |
| 1047 | static int |
Bram Moolenaar | 764b23c | 2016-01-30 21:10:09 +0100 | [diff] [blame] | 1048 | undo_read(bufinfo_T *bi, char_u *buffer, size_t size) |
Bram Moolenaar | 8f4ac01 | 2014-08-10 13:38:34 +0200 | [diff] [blame] | 1049 | { |
Bram Moolenaar | 56f2db5 | 2017-06-11 23:09:15 +0200 | [diff] [blame] | 1050 | int retval = OK; |
| 1051 | |
Bram Moolenaar | 8f4ac01 | 2014-08-10 13:38:34 +0200 | [diff] [blame] | 1052 | #ifdef FEAT_CRYPT |
| 1053 | if (bi->bi_buffer != NULL) |
| 1054 | { |
Bram Moolenaar | 9b8f021 | 2014-08-13 22:05:53 +0200 | [diff] [blame] | 1055 | int size_todo = (int)size; |
Bram Moolenaar | 8f4ac01 | 2014-08-10 13:38:34 +0200 | [diff] [blame] | 1056 | char_u *p = buffer; |
| 1057 | |
| 1058 | while (size_todo > 0) |
| 1059 | { |
| 1060 | size_t n; |
| 1061 | |
| 1062 | if (bi->bi_used >= bi->bi_avail) |
| 1063 | { |
| 1064 | n = fread(bi->bi_buffer, 1, (size_t)CRYPT_BUF_SIZE, bi->bi_fp); |
Bram Moolenaar | 55952d4 | 2016-11-05 14:58:34 +0100 | [diff] [blame] | 1065 | if (n == 0) |
Bram Moolenaar | 8f4ac01 | 2014-08-10 13:38:34 +0200 | [diff] [blame] | 1066 | { |
Bram Moolenaar | 56f2db5 | 2017-06-11 23:09:15 +0200 | [diff] [blame] | 1067 | retval = FAIL; |
| 1068 | break; |
Bram Moolenaar | 8f4ac01 | 2014-08-10 13:38:34 +0200 | [diff] [blame] | 1069 | } |
| 1070 | bi->bi_avail = n; |
| 1071 | bi->bi_used = 0; |
| 1072 | crypt_decode_inplace(bi->bi_state, bi->bi_buffer, bi->bi_avail); |
| 1073 | } |
| 1074 | n = size_todo; |
| 1075 | if (n > bi->bi_avail - bi->bi_used) |
| 1076 | n = bi->bi_avail - bi->bi_used; |
| 1077 | mch_memmove(p, bi->bi_buffer + bi->bi_used, n); |
| 1078 | bi->bi_used += n; |
Bram Moolenaar | 9b8f021 | 2014-08-13 22:05:53 +0200 | [diff] [blame] | 1079 | size_todo -= (int)n; |
Bram Moolenaar | 8f4ac01 | 2014-08-10 13:38:34 +0200 | [diff] [blame] | 1080 | p += n; |
| 1081 | } |
Bram Moolenaar | 8f4ac01 | 2014-08-10 13:38:34 +0200 | [diff] [blame] | 1082 | } |
Bram Moolenaar | 56f2db5 | 2017-06-11 23:09:15 +0200 | [diff] [blame] | 1083 | else |
Bram Moolenaar | 8f4ac01 | 2014-08-10 13:38:34 +0200 | [diff] [blame] | 1084 | #endif |
| 1085 | if (fread(buffer, (size_t)size, 1, bi->bi_fp) != 1) |
Bram Moolenaar | 56f2db5 | 2017-06-11 23:09:15 +0200 | [diff] [blame] | 1086 | retval = FAIL; |
| 1087 | |
| 1088 | if (retval == FAIL) |
| 1089 | /* Error may be checked for only later. Fill with zeros, |
| 1090 | * so that the reader won't use garbage. */ |
| 1091 | vim_memset(buffer, 0, size); |
| 1092 | return retval; |
Bram Moolenaar | 8f4ac01 | 2014-08-10 13:38:34 +0200 | [diff] [blame] | 1093 | } |
| 1094 | |
| 1095 | /* |
| 1096 | * Read a string of length "len" from "bi->bi_fd". |
| 1097 | * "len" can be zero to allocate an empty line. |
| 1098 | * Decrypt the bytes if needed. |
| 1099 | * Append a NUL. |
| 1100 | * Returns a pointer to allocated memory or NULL for failure. |
| 1101 | */ |
| 1102 | static char_u * |
Bram Moolenaar | 764b23c | 2016-01-30 21:10:09 +0100 | [diff] [blame] | 1103 | read_string_decrypt(bufinfo_T *bi, int len) |
Bram Moolenaar | 8f4ac01 | 2014-08-10 13:38:34 +0200 | [diff] [blame] | 1104 | { |
| 1105 | char_u *ptr = alloc((unsigned)len + 1); |
| 1106 | |
| 1107 | if (ptr != NULL) |
| 1108 | { |
| 1109 | if (len > 0 && undo_read(bi, ptr, len) == FAIL) |
| 1110 | { |
| 1111 | vim_free(ptr); |
| 1112 | return NULL; |
| 1113 | } |
| 1114 | ptr[len] = NUL; |
| 1115 | #ifdef FEAT_CRYPT |
| 1116 | if (bi->bi_state != NULL && bi->bi_buffer == NULL) |
| 1117 | crypt_decode_inplace(bi->bi_state, ptr, len); |
| 1118 | #endif |
| 1119 | } |
| 1120 | return ptr; |
| 1121 | } |
| 1122 | |
| 1123 | /* |
| 1124 | * Writes the (not encrypted) header and initializes encryption if needed. |
| 1125 | */ |
| 1126 | static int |
Bram Moolenaar | 764b23c | 2016-01-30 21:10:09 +0100 | [diff] [blame] | 1127 | serialize_header(bufinfo_T *bi, char_u *hash) |
Bram Moolenaar | 6ed8ed8 | 2010-05-30 20:40:11 +0200 | [diff] [blame] | 1128 | { |
Bram Moolenaar | 8f4ac01 | 2014-08-10 13:38:34 +0200 | [diff] [blame] | 1129 | int len; |
| 1130 | buf_T *buf = bi->bi_buf; |
| 1131 | FILE *fp = bi->bi_fp; |
| 1132 | char_u time_buf[8]; |
Bram Moolenaar | 6ed8ed8 | 2010-05-30 20:40:11 +0200 | [diff] [blame] | 1133 | |
| 1134 | /* Start writing, first the magic marker and undo info version. */ |
| 1135 | if (fwrite(UF_START_MAGIC, (size_t)UF_START_MAGIC_LEN, (size_t)1, fp) != 1) |
| 1136 | return FAIL; |
Bram Moolenaar | a3ff49f | 2010-05-30 22:48:02 +0200 | [diff] [blame] | 1137 | |
| 1138 | /* If the buffer is encrypted then all text bytes following will be |
| 1139 | * encrypted. Numbers and other info is not crypted. */ |
| 1140 | #ifdef FEAT_CRYPT |
Bram Moolenaar | fa0ff9a | 2010-07-25 16:05:19 +0200 | [diff] [blame] | 1141 | if (*buf->b_p_key != NUL) |
Bram Moolenaar | a3ff49f | 2010-05-30 22:48:02 +0200 | [diff] [blame] | 1142 | { |
| 1143 | char_u *header; |
| 1144 | int header_len; |
| 1145 | |
Bram Moolenaar | 8f4ac01 | 2014-08-10 13:38:34 +0200 | [diff] [blame] | 1146 | undo_write_bytes(bi, (long_u)UF_VERSION_CRYPT, 2); |
| 1147 | bi->bi_state = crypt_create_for_writing(crypt_get_method_nr(buf), |
| 1148 | buf->b_p_key, &header, &header_len); |
| 1149 | if (bi->bi_state == NULL) |
Bram Moolenaar | a3ff49f | 2010-05-30 22:48:02 +0200 | [diff] [blame] | 1150 | return FAIL; |
Bram Moolenaar | bbd6afe | 2010-06-02 20:32:23 +0200 | [diff] [blame] | 1151 | len = (int)fwrite(header, (size_t)header_len, (size_t)1, fp); |
Bram Moolenaar | a3ff49f | 2010-05-30 22:48:02 +0200 | [diff] [blame] | 1152 | vim_free(header); |
| 1153 | if (len != 1) |
Bram Moolenaar | a8ffcbb | 2010-06-21 06:15:46 +0200 | [diff] [blame] | 1154 | { |
Bram Moolenaar | 8f4ac01 | 2014-08-10 13:38:34 +0200 | [diff] [blame] | 1155 | crypt_free_state(bi->bi_state); |
| 1156 | bi->bi_state = NULL; |
Bram Moolenaar | a3ff49f | 2010-05-30 22:48:02 +0200 | [diff] [blame] | 1157 | return FAIL; |
Bram Moolenaar | a8ffcbb | 2010-06-21 06:15:46 +0200 | [diff] [blame] | 1158 | } |
Bram Moolenaar | 8f4ac01 | 2014-08-10 13:38:34 +0200 | [diff] [blame] | 1159 | |
| 1160 | if (crypt_whole_undofile(crypt_get_method_nr(buf))) |
| 1161 | { |
| 1162 | bi->bi_buffer = alloc(CRYPT_BUF_SIZE); |
| 1163 | if (bi->bi_buffer == NULL) |
| 1164 | { |
| 1165 | crypt_free_state(bi->bi_state); |
| 1166 | bi->bi_state = NULL; |
| 1167 | return FAIL; |
| 1168 | } |
| 1169 | bi->bi_used = 0; |
| 1170 | } |
Bram Moolenaar | a3ff49f | 2010-05-30 22:48:02 +0200 | [diff] [blame] | 1171 | } |
| 1172 | else |
| 1173 | #endif |
Bram Moolenaar | 8f4ac01 | 2014-08-10 13:38:34 +0200 | [diff] [blame] | 1174 | undo_write_bytes(bi, (long_u)UF_VERSION, 2); |
Bram Moolenaar | a3ff49f | 2010-05-30 22:48:02 +0200 | [diff] [blame] | 1175 | |
Bram Moolenaar | 6ed8ed8 | 2010-05-30 20:40:11 +0200 | [diff] [blame] | 1176 | |
| 1177 | /* Write a hash of the buffer text, so that we can verify it is still the |
| 1178 | * same when reading the buffer text. */ |
Bram Moolenaar | 8f4ac01 | 2014-08-10 13:38:34 +0200 | [diff] [blame] | 1179 | if (undo_write(bi, hash, (size_t)UNDO_HASH_SIZE) == FAIL) |
Bram Moolenaar | 6ed8ed8 | 2010-05-30 20:40:11 +0200 | [diff] [blame] | 1180 | return FAIL; |
| 1181 | |
| 1182 | /* buffer-specific data */ |
Bram Moolenaar | 8f4ac01 | 2014-08-10 13:38:34 +0200 | [diff] [blame] | 1183 | undo_write_bytes(bi, (long_u)buf->b_ml.ml_line_count, 4); |
Bram Moolenaar | 6ed8ed8 | 2010-05-30 20:40:11 +0200 | [diff] [blame] | 1184 | len = buf->b_u_line_ptr != NULL ? (int)STRLEN(buf->b_u_line_ptr) : 0; |
Bram Moolenaar | 8f4ac01 | 2014-08-10 13:38:34 +0200 | [diff] [blame] | 1185 | undo_write_bytes(bi, (long_u)len, 4); |
| 1186 | if (len > 0 && fwrite_crypt(bi, buf->b_u_line_ptr, (size_t)len) == FAIL) |
Bram Moolenaar | 6ed8ed8 | 2010-05-30 20:40:11 +0200 | [diff] [blame] | 1187 | return FAIL; |
Bram Moolenaar | 8f4ac01 | 2014-08-10 13:38:34 +0200 | [diff] [blame] | 1188 | undo_write_bytes(bi, (long_u)buf->b_u_line_lnum, 4); |
| 1189 | undo_write_bytes(bi, (long_u)buf->b_u_line_colnr, 4); |
Bram Moolenaar | 6ed8ed8 | 2010-05-30 20:40:11 +0200 | [diff] [blame] | 1190 | |
| 1191 | /* Undo structures header data */ |
Bram Moolenaar | 8f4ac01 | 2014-08-10 13:38:34 +0200 | [diff] [blame] | 1192 | put_header_ptr(bi, buf->b_u_oldhead); |
| 1193 | put_header_ptr(bi, buf->b_u_newhead); |
| 1194 | put_header_ptr(bi, buf->b_u_curhead); |
Bram Moolenaar | 6ed8ed8 | 2010-05-30 20:40:11 +0200 | [diff] [blame] | 1195 | |
Bram Moolenaar | 8f4ac01 | 2014-08-10 13:38:34 +0200 | [diff] [blame] | 1196 | undo_write_bytes(bi, (long_u)buf->b_u_numhead, 4); |
| 1197 | undo_write_bytes(bi, (long_u)buf->b_u_seq_last, 4); |
| 1198 | undo_write_bytes(bi, (long_u)buf->b_u_seq_cur, 4); |
| 1199 | time_to_bytes(buf->b_u_time_cur, time_buf); |
| 1200 | undo_write(bi, time_buf, 8); |
Bram Moolenaar | a800b42 | 2010-06-27 01:15:55 +0200 | [diff] [blame] | 1201 | |
| 1202 | /* Optional fields. */ |
Bram Moolenaar | 8f4ac01 | 2014-08-10 13:38:34 +0200 | [diff] [blame] | 1203 | undo_write_bytes(bi, 4, 1); |
| 1204 | undo_write_bytes(bi, UF_LAST_SAVE_NR, 1); |
| 1205 | undo_write_bytes(bi, (long_u)buf->b_u_save_nr_last, 4); |
Bram Moolenaar | a800b42 | 2010-06-27 01:15:55 +0200 | [diff] [blame] | 1206 | |
Bram Moolenaar | 8f4ac01 | 2014-08-10 13:38:34 +0200 | [diff] [blame] | 1207 | undo_write_bytes(bi, 0, 1); /* end marker */ |
Bram Moolenaar | 6ed8ed8 | 2010-05-30 20:40:11 +0200 | [diff] [blame] | 1208 | |
| 1209 | return OK; |
| 1210 | } |
| 1211 | |
| 1212 | static int |
Bram Moolenaar | 764b23c | 2016-01-30 21:10:09 +0100 | [diff] [blame] | 1213 | serialize_uhp(bufinfo_T *bi, u_header_T *uhp) |
Bram Moolenaar | 6ed8ed8 | 2010-05-30 20:40:11 +0200 | [diff] [blame] | 1214 | { |
| 1215 | int i; |
| 1216 | u_entry_T *uep; |
Bram Moolenaar | 8f4ac01 | 2014-08-10 13:38:34 +0200 | [diff] [blame] | 1217 | char_u time_buf[8]; |
Bram Moolenaar | 6ed8ed8 | 2010-05-30 20:40:11 +0200 | [diff] [blame] | 1218 | |
Bram Moolenaar | 8f4ac01 | 2014-08-10 13:38:34 +0200 | [diff] [blame] | 1219 | if (undo_write_bytes(bi, (long_u)UF_HEADER_MAGIC, 2) == FAIL) |
Bram Moolenaar | 6ed8ed8 | 2010-05-30 20:40:11 +0200 | [diff] [blame] | 1220 | return FAIL; |
| 1221 | |
Bram Moolenaar | 8f4ac01 | 2014-08-10 13:38:34 +0200 | [diff] [blame] | 1222 | put_header_ptr(bi, uhp->uh_next.ptr); |
| 1223 | put_header_ptr(bi, uhp->uh_prev.ptr); |
| 1224 | put_header_ptr(bi, uhp->uh_alt_next.ptr); |
| 1225 | put_header_ptr(bi, uhp->uh_alt_prev.ptr); |
| 1226 | undo_write_bytes(bi, uhp->uh_seq, 4); |
| 1227 | serialize_pos(bi, uhp->uh_cursor); |
Bram Moolenaar | 6ed8ed8 | 2010-05-30 20:40:11 +0200 | [diff] [blame] | 1228 | #ifdef FEAT_VIRTUALEDIT |
Bram Moolenaar | 8f4ac01 | 2014-08-10 13:38:34 +0200 | [diff] [blame] | 1229 | undo_write_bytes(bi, (long_u)uhp->uh_cursor_vcol, 4); |
Bram Moolenaar | 6ed8ed8 | 2010-05-30 20:40:11 +0200 | [diff] [blame] | 1230 | #else |
Bram Moolenaar | 8f4ac01 | 2014-08-10 13:38:34 +0200 | [diff] [blame] | 1231 | undo_write_bytes(bi, (long_u)0, 4); |
Bram Moolenaar | 6ed8ed8 | 2010-05-30 20:40:11 +0200 | [diff] [blame] | 1232 | #endif |
Bram Moolenaar | 8f4ac01 | 2014-08-10 13:38:34 +0200 | [diff] [blame] | 1233 | undo_write_bytes(bi, (long_u)uhp->uh_flags, 2); |
Bram Moolenaar | 6ed8ed8 | 2010-05-30 20:40:11 +0200 | [diff] [blame] | 1234 | /* Assume NMARKS will stay the same. */ |
| 1235 | for (i = 0; i < NMARKS; ++i) |
Bram Moolenaar | 8f4ac01 | 2014-08-10 13:38:34 +0200 | [diff] [blame] | 1236 | serialize_pos(bi, uhp->uh_namedm[i]); |
| 1237 | serialize_visualinfo(bi, &uhp->uh_visual); |
| 1238 | time_to_bytes(uhp->uh_time, time_buf); |
| 1239 | undo_write(bi, time_buf, 8); |
Bram Moolenaar | 6ed8ed8 | 2010-05-30 20:40:11 +0200 | [diff] [blame] | 1240 | |
Bram Moolenaar | a800b42 | 2010-06-27 01:15:55 +0200 | [diff] [blame] | 1241 | /* Optional fields. */ |
Bram Moolenaar | 8f4ac01 | 2014-08-10 13:38:34 +0200 | [diff] [blame] | 1242 | undo_write_bytes(bi, 4, 1); |
| 1243 | undo_write_bytes(bi, UHP_SAVE_NR, 1); |
| 1244 | undo_write_bytes(bi, (long_u)uhp->uh_save_nr, 4); |
Bram Moolenaar | a800b42 | 2010-06-27 01:15:55 +0200 | [diff] [blame] | 1245 | |
Bram Moolenaar | 8f4ac01 | 2014-08-10 13:38:34 +0200 | [diff] [blame] | 1246 | undo_write_bytes(bi, 0, 1); /* end marker */ |
Bram Moolenaar | a800b42 | 2010-06-27 01:15:55 +0200 | [diff] [blame] | 1247 | |
Bram Moolenaar | 6ed8ed8 | 2010-05-30 20:40:11 +0200 | [diff] [blame] | 1248 | /* Write all the entries. */ |
| 1249 | for (uep = uhp->uh_entry; uep != NULL; uep = uep->ue_next) |
| 1250 | { |
Bram Moolenaar | 8f4ac01 | 2014-08-10 13:38:34 +0200 | [diff] [blame] | 1251 | undo_write_bytes(bi, (long_u)UF_ENTRY_MAGIC, 2); |
| 1252 | if (serialize_uep(bi, uep) == FAIL) |
Bram Moolenaar | 6ed8ed8 | 2010-05-30 20:40:11 +0200 | [diff] [blame] | 1253 | return FAIL; |
| 1254 | } |
Bram Moolenaar | 8f4ac01 | 2014-08-10 13:38:34 +0200 | [diff] [blame] | 1255 | undo_write_bytes(bi, (long_u)UF_ENTRY_END_MAGIC, 2); |
Bram Moolenaar | 6ed8ed8 | 2010-05-30 20:40:11 +0200 | [diff] [blame] | 1256 | return OK; |
| 1257 | } |
| 1258 | |
| 1259 | static u_header_T * |
Bram Moolenaar | 764b23c | 2016-01-30 21:10:09 +0100 | [diff] [blame] | 1260 | unserialize_uhp(bufinfo_T *bi, char_u *file_name) |
Bram Moolenaar | 6ed8ed8 | 2010-05-30 20:40:11 +0200 | [diff] [blame] | 1261 | { |
| 1262 | u_header_T *uhp; |
| 1263 | int i; |
| 1264 | u_entry_T *uep, *last_uep; |
| 1265 | int c; |
| 1266 | int error; |
| 1267 | |
| 1268 | uhp = (u_header_T *)U_ALLOC_LINE(sizeof(u_header_T)); |
| 1269 | if (uhp == NULL) |
| 1270 | return NULL; |
| 1271 | vim_memset(uhp, 0, sizeof(u_header_T)); |
| 1272 | #ifdef U_DEBUG |
| 1273 | uhp->uh_magic = UH_MAGIC; |
| 1274 | #endif |
Bram Moolenaar | 8f4ac01 | 2014-08-10 13:38:34 +0200 | [diff] [blame] | 1275 | uhp->uh_next.seq = undo_read_4c(bi); |
| 1276 | uhp->uh_prev.seq = undo_read_4c(bi); |
| 1277 | uhp->uh_alt_next.seq = undo_read_4c(bi); |
| 1278 | uhp->uh_alt_prev.seq = undo_read_4c(bi); |
| 1279 | uhp->uh_seq = undo_read_4c(bi); |
Bram Moolenaar | 6ed8ed8 | 2010-05-30 20:40:11 +0200 | [diff] [blame] | 1280 | if (uhp->uh_seq <= 0) |
| 1281 | { |
| 1282 | corruption_error("uh_seq", file_name); |
| 1283 | vim_free(uhp); |
| 1284 | return NULL; |
| 1285 | } |
Bram Moolenaar | 8f4ac01 | 2014-08-10 13:38:34 +0200 | [diff] [blame] | 1286 | unserialize_pos(bi, &uhp->uh_cursor); |
Bram Moolenaar | 6ed8ed8 | 2010-05-30 20:40:11 +0200 | [diff] [blame] | 1287 | #ifdef FEAT_VIRTUALEDIT |
Bram Moolenaar | 8f4ac01 | 2014-08-10 13:38:34 +0200 | [diff] [blame] | 1288 | uhp->uh_cursor_vcol = undo_read_4c(bi); |
Bram Moolenaar | 6ed8ed8 | 2010-05-30 20:40:11 +0200 | [diff] [blame] | 1289 | #else |
Bram Moolenaar | 8f4ac01 | 2014-08-10 13:38:34 +0200 | [diff] [blame] | 1290 | (void)undo_read_4c(bi); |
Bram Moolenaar | 6ed8ed8 | 2010-05-30 20:40:11 +0200 | [diff] [blame] | 1291 | #endif |
Bram Moolenaar | 8f4ac01 | 2014-08-10 13:38:34 +0200 | [diff] [blame] | 1292 | uhp->uh_flags = undo_read_2c(bi); |
Bram Moolenaar | 6ed8ed8 | 2010-05-30 20:40:11 +0200 | [diff] [blame] | 1293 | for (i = 0; i < NMARKS; ++i) |
Bram Moolenaar | 8f4ac01 | 2014-08-10 13:38:34 +0200 | [diff] [blame] | 1294 | unserialize_pos(bi, &uhp->uh_namedm[i]); |
| 1295 | unserialize_visualinfo(bi, &uhp->uh_visual); |
| 1296 | uhp->uh_time = undo_read_time(bi); |
Bram Moolenaar | 6ed8ed8 | 2010-05-30 20:40:11 +0200 | [diff] [blame] | 1297 | |
Bram Moolenaar | a800b42 | 2010-06-27 01:15:55 +0200 | [diff] [blame] | 1298 | /* Optional fields. */ |
Bram Moolenaar | 69154f2 | 2010-07-18 21:42:34 +0200 | [diff] [blame] | 1299 | for (;;) |
| 1300 | { |
Bram Moolenaar | 8f4ac01 | 2014-08-10 13:38:34 +0200 | [diff] [blame] | 1301 | int len = undo_read_byte(bi); |
Bram Moolenaar | 69154f2 | 2010-07-18 21:42:34 +0200 | [diff] [blame] | 1302 | int what; |
Bram Moolenaar | a800b42 | 2010-06-27 01:15:55 +0200 | [diff] [blame] | 1303 | |
Bram Moolenaar | 69154f2 | 2010-07-18 21:42:34 +0200 | [diff] [blame] | 1304 | if (len == 0) |
| 1305 | break; |
Bram Moolenaar | 8f4ac01 | 2014-08-10 13:38:34 +0200 | [diff] [blame] | 1306 | what = undo_read_byte(bi); |
Bram Moolenaar | 69154f2 | 2010-07-18 21:42:34 +0200 | [diff] [blame] | 1307 | switch (what) |
| 1308 | { |
| 1309 | case UHP_SAVE_NR: |
Bram Moolenaar | 8f4ac01 | 2014-08-10 13:38:34 +0200 | [diff] [blame] | 1310 | uhp->uh_save_nr = undo_read_4c(bi); |
Bram Moolenaar | a800b42 | 2010-06-27 01:15:55 +0200 | [diff] [blame] | 1311 | break; |
Bram Moolenaar | 69154f2 | 2010-07-18 21:42:34 +0200 | [diff] [blame] | 1312 | default: |
| 1313 | /* field not supported, skip */ |
| 1314 | while (--len >= 0) |
Bram Moolenaar | 8f4ac01 | 2014-08-10 13:38:34 +0200 | [diff] [blame] | 1315 | (void)undo_read_byte(bi); |
Bram Moolenaar | a800b42 | 2010-06-27 01:15:55 +0200 | [diff] [blame] | 1316 | } |
Bram Moolenaar | 69154f2 | 2010-07-18 21:42:34 +0200 | [diff] [blame] | 1317 | } |
Bram Moolenaar | a800b42 | 2010-06-27 01:15:55 +0200 | [diff] [blame] | 1318 | |
Bram Moolenaar | 6ed8ed8 | 2010-05-30 20:40:11 +0200 | [diff] [blame] | 1319 | /* Unserialize the uep list. */ |
| 1320 | last_uep = NULL; |
Bram Moolenaar | 8f4ac01 | 2014-08-10 13:38:34 +0200 | [diff] [blame] | 1321 | while ((c = undo_read_2c(bi)) == UF_ENTRY_MAGIC) |
Bram Moolenaar | 6ed8ed8 | 2010-05-30 20:40:11 +0200 | [diff] [blame] | 1322 | { |
| 1323 | error = FALSE; |
Bram Moolenaar | 8f4ac01 | 2014-08-10 13:38:34 +0200 | [diff] [blame] | 1324 | uep = unserialize_uep(bi, &error, file_name); |
Bram Moolenaar | 6ed8ed8 | 2010-05-30 20:40:11 +0200 | [diff] [blame] | 1325 | if (last_uep == NULL) |
| 1326 | uhp->uh_entry = uep; |
| 1327 | else |
| 1328 | last_uep->ue_next = uep; |
| 1329 | last_uep = uep; |
| 1330 | if (uep == NULL || error) |
| 1331 | { |
| 1332 | u_free_uhp(uhp); |
| 1333 | return NULL; |
| 1334 | } |
| 1335 | } |
| 1336 | if (c != UF_ENTRY_END_MAGIC) |
| 1337 | { |
| 1338 | corruption_error("entry end", file_name); |
| 1339 | u_free_uhp(uhp); |
| 1340 | return NULL; |
| 1341 | } |
| 1342 | |
| 1343 | return uhp; |
| 1344 | } |
| 1345 | |
Bram Moolenaar | 9db5806 | 2010-05-29 20:33:07 +0200 | [diff] [blame] | 1346 | /* |
Bram Moolenaar | 8f4ac01 | 2014-08-10 13:38:34 +0200 | [diff] [blame] | 1347 | * Serialize "uep". |
Bram Moolenaar | 9db5806 | 2010-05-29 20:33:07 +0200 | [diff] [blame] | 1348 | */ |
| 1349 | static int |
Bram Moolenaar | 764b23c | 2016-01-30 21:10:09 +0100 | [diff] [blame] | 1350 | serialize_uep( |
| 1351 | bufinfo_T *bi, |
| 1352 | u_entry_T *uep) |
Bram Moolenaar | 9db5806 | 2010-05-29 20:33:07 +0200 | [diff] [blame] | 1353 | { |
| 1354 | int i; |
| 1355 | size_t len; |
| 1356 | |
Bram Moolenaar | 8f4ac01 | 2014-08-10 13:38:34 +0200 | [diff] [blame] | 1357 | undo_write_bytes(bi, (long_u)uep->ue_top, 4); |
| 1358 | undo_write_bytes(bi, (long_u)uep->ue_bot, 4); |
| 1359 | undo_write_bytes(bi, (long_u)uep->ue_lcount, 4); |
| 1360 | undo_write_bytes(bi, (long_u)uep->ue_size, 4); |
Bram Moolenaar | 9db5806 | 2010-05-29 20:33:07 +0200 | [diff] [blame] | 1361 | for (i = 0; i < uep->ue_size; ++i) |
| 1362 | { |
| 1363 | len = STRLEN(uep->ue_array[i]); |
Bram Moolenaar | 8f4ac01 | 2014-08-10 13:38:34 +0200 | [diff] [blame] | 1364 | if (undo_write_bytes(bi, (long_u)len, 4) == FAIL) |
Bram Moolenaar | 9db5806 | 2010-05-29 20:33:07 +0200 | [diff] [blame] | 1365 | return FAIL; |
Bram Moolenaar | 8f4ac01 | 2014-08-10 13:38:34 +0200 | [diff] [blame] | 1366 | if (len > 0 && fwrite_crypt(bi, uep->ue_array[i], len) == FAIL) |
Bram Moolenaar | 9db5806 | 2010-05-29 20:33:07 +0200 | [diff] [blame] | 1367 | return FAIL; |
| 1368 | } |
| 1369 | return OK; |
| 1370 | } |
| 1371 | |
| 1372 | static u_entry_T * |
Bram Moolenaar | 764b23c | 2016-01-30 21:10:09 +0100 | [diff] [blame] | 1373 | unserialize_uep(bufinfo_T *bi, int *error, char_u *file_name) |
Bram Moolenaar | 9db5806 | 2010-05-29 20:33:07 +0200 | [diff] [blame] | 1374 | { |
| 1375 | int i; |
Bram Moolenaar | 9db5806 | 2010-05-29 20:33:07 +0200 | [diff] [blame] | 1376 | u_entry_T *uep; |
Bram Moolenaar | 0c8485f | 2017-02-26 18:17:10 +0100 | [diff] [blame] | 1377 | char_u **array = NULL; |
Bram Moolenaar | 9db5806 | 2010-05-29 20:33:07 +0200 | [diff] [blame] | 1378 | char_u *line; |
| 1379 | int line_len; |
| 1380 | |
| 1381 | uep = (u_entry_T *)U_ALLOC_LINE(sizeof(u_entry_T)); |
| 1382 | if (uep == NULL) |
| 1383 | return NULL; |
| 1384 | vim_memset(uep, 0, sizeof(u_entry_T)); |
| 1385 | #ifdef U_DEBUG |
| 1386 | uep->ue_magic = UE_MAGIC; |
| 1387 | #endif |
Bram Moolenaar | 8f4ac01 | 2014-08-10 13:38:34 +0200 | [diff] [blame] | 1388 | uep->ue_top = undo_read_4c(bi); |
| 1389 | uep->ue_bot = undo_read_4c(bi); |
| 1390 | uep->ue_lcount = undo_read_4c(bi); |
| 1391 | uep->ue_size = undo_read_4c(bi); |
Bram Moolenaar | 9db5806 | 2010-05-29 20:33:07 +0200 | [diff] [blame] | 1392 | if (uep->ue_size > 0) |
| 1393 | { |
Bram Moolenaar | 0c8485f | 2017-02-26 18:17:10 +0100 | [diff] [blame] | 1394 | if (uep->ue_size < LONG_MAX / (int)sizeof(char_u *)) |
| 1395 | array = (char_u **)U_ALLOC_LINE(sizeof(char_u *) * uep->ue_size); |
Bram Moolenaar | 9db5806 | 2010-05-29 20:33:07 +0200 | [diff] [blame] | 1396 | if (array == NULL) |
| 1397 | { |
| 1398 | *error = TRUE; |
| 1399 | return uep; |
| 1400 | } |
| 1401 | vim_memset(array, 0, sizeof(char_u *) * uep->ue_size); |
| 1402 | } |
| 1403 | uep->ue_array = array; |
| 1404 | |
| 1405 | for (i = 0; i < uep->ue_size; ++i) |
| 1406 | { |
Bram Moolenaar | 8f4ac01 | 2014-08-10 13:38:34 +0200 | [diff] [blame] | 1407 | line_len = undo_read_4c(bi); |
Bram Moolenaar | 9db5806 | 2010-05-29 20:33:07 +0200 | [diff] [blame] | 1408 | if (line_len >= 0) |
Bram Moolenaar | 8f4ac01 | 2014-08-10 13:38:34 +0200 | [diff] [blame] | 1409 | line = read_string_decrypt(bi, line_len); |
Bram Moolenaar | 9db5806 | 2010-05-29 20:33:07 +0200 | [diff] [blame] | 1410 | else |
| 1411 | { |
| 1412 | line = NULL; |
| 1413 | corruption_error("line length", file_name); |
| 1414 | } |
| 1415 | if (line == NULL) |
| 1416 | { |
| 1417 | *error = TRUE; |
| 1418 | return uep; |
| 1419 | } |
Bram Moolenaar | 9db5806 | 2010-05-29 20:33:07 +0200 | [diff] [blame] | 1420 | array[i] = line; |
| 1421 | } |
| 1422 | return uep; |
| 1423 | } |
| 1424 | |
| 1425 | /* |
Bram Moolenaar | 8f4ac01 | 2014-08-10 13:38:34 +0200 | [diff] [blame] | 1426 | * Serialize "pos". |
Bram Moolenaar | 9db5806 | 2010-05-29 20:33:07 +0200 | [diff] [blame] | 1427 | */ |
| 1428 | static void |
Bram Moolenaar | 764b23c | 2016-01-30 21:10:09 +0100 | [diff] [blame] | 1429 | serialize_pos(bufinfo_T *bi, pos_T pos) |
Bram Moolenaar | 9db5806 | 2010-05-29 20:33:07 +0200 | [diff] [blame] | 1430 | { |
Bram Moolenaar | 8f4ac01 | 2014-08-10 13:38:34 +0200 | [diff] [blame] | 1431 | undo_write_bytes(bi, (long_u)pos.lnum, 4); |
| 1432 | undo_write_bytes(bi, (long_u)pos.col, 4); |
Bram Moolenaar | 9db5806 | 2010-05-29 20:33:07 +0200 | [diff] [blame] | 1433 | #ifdef FEAT_VIRTUALEDIT |
Bram Moolenaar | 8f4ac01 | 2014-08-10 13:38:34 +0200 | [diff] [blame] | 1434 | undo_write_bytes(bi, (long_u)pos.coladd, 4); |
Bram Moolenaar | 9db5806 | 2010-05-29 20:33:07 +0200 | [diff] [blame] | 1435 | #else |
Bram Moolenaar | 8f4ac01 | 2014-08-10 13:38:34 +0200 | [diff] [blame] | 1436 | undo_write_bytes(bi, (long_u)0, 4); |
Bram Moolenaar | 9db5806 | 2010-05-29 20:33:07 +0200 | [diff] [blame] | 1437 | #endif |
| 1438 | } |
| 1439 | |
| 1440 | /* |
Bram Moolenaar | 8f4ac01 | 2014-08-10 13:38:34 +0200 | [diff] [blame] | 1441 | * Unserialize the pos_T at the current position. |
Bram Moolenaar | 9db5806 | 2010-05-29 20:33:07 +0200 | [diff] [blame] | 1442 | */ |
| 1443 | static void |
Bram Moolenaar | 764b23c | 2016-01-30 21:10:09 +0100 | [diff] [blame] | 1444 | unserialize_pos(bufinfo_T *bi, pos_T *pos) |
Bram Moolenaar | 9db5806 | 2010-05-29 20:33:07 +0200 | [diff] [blame] | 1445 | { |
Bram Moolenaar | 8f4ac01 | 2014-08-10 13:38:34 +0200 | [diff] [blame] | 1446 | pos->lnum = undo_read_4c(bi); |
Bram Moolenaar | 6ed8ed8 | 2010-05-30 20:40:11 +0200 | [diff] [blame] | 1447 | if (pos->lnum < 0) |
| 1448 | pos->lnum = 0; |
Bram Moolenaar | 8f4ac01 | 2014-08-10 13:38:34 +0200 | [diff] [blame] | 1449 | pos->col = undo_read_4c(bi); |
Bram Moolenaar | 6ed8ed8 | 2010-05-30 20:40:11 +0200 | [diff] [blame] | 1450 | if (pos->col < 0) |
| 1451 | pos->col = 0; |
Bram Moolenaar | 9db5806 | 2010-05-29 20:33:07 +0200 | [diff] [blame] | 1452 | #ifdef FEAT_VIRTUALEDIT |
Bram Moolenaar | 8f4ac01 | 2014-08-10 13:38:34 +0200 | [diff] [blame] | 1453 | pos->coladd = undo_read_4c(bi); |
Bram Moolenaar | 6ed8ed8 | 2010-05-30 20:40:11 +0200 | [diff] [blame] | 1454 | if (pos->coladd < 0) |
| 1455 | pos->coladd = 0; |
Bram Moolenaar | 9db5806 | 2010-05-29 20:33:07 +0200 | [diff] [blame] | 1456 | #else |
Bram Moolenaar | 8f4ac01 | 2014-08-10 13:38:34 +0200 | [diff] [blame] | 1457 | (void)undo_read_4c(bi); |
Bram Moolenaar | 9db5806 | 2010-05-29 20:33:07 +0200 | [diff] [blame] | 1458 | #endif |
| 1459 | } |
| 1460 | |
| 1461 | /* |
Bram Moolenaar | 8f4ac01 | 2014-08-10 13:38:34 +0200 | [diff] [blame] | 1462 | * Serialize "info". |
Bram Moolenaar | 9db5806 | 2010-05-29 20:33:07 +0200 | [diff] [blame] | 1463 | */ |
| 1464 | static void |
Bram Moolenaar | 764b23c | 2016-01-30 21:10:09 +0100 | [diff] [blame] | 1465 | serialize_visualinfo(bufinfo_T *bi, visualinfo_T *info) |
Bram Moolenaar | 9db5806 | 2010-05-29 20:33:07 +0200 | [diff] [blame] | 1466 | { |
Bram Moolenaar | 8f4ac01 | 2014-08-10 13:38:34 +0200 | [diff] [blame] | 1467 | serialize_pos(bi, info->vi_start); |
| 1468 | serialize_pos(bi, info->vi_end); |
| 1469 | undo_write_bytes(bi, (long_u)info->vi_mode, 4); |
| 1470 | undo_write_bytes(bi, (long_u)info->vi_curswant, 4); |
Bram Moolenaar | 9db5806 | 2010-05-29 20:33:07 +0200 | [diff] [blame] | 1471 | } |
| 1472 | |
| 1473 | /* |
Bram Moolenaar | 8f4ac01 | 2014-08-10 13:38:34 +0200 | [diff] [blame] | 1474 | * Unserialize the visualinfo_T at the current position. |
Bram Moolenaar | 9db5806 | 2010-05-29 20:33:07 +0200 | [diff] [blame] | 1475 | */ |
| 1476 | static void |
Bram Moolenaar | 764b23c | 2016-01-30 21:10:09 +0100 | [diff] [blame] | 1477 | unserialize_visualinfo(bufinfo_T *bi, visualinfo_T *info) |
Bram Moolenaar | 9db5806 | 2010-05-29 20:33:07 +0200 | [diff] [blame] | 1478 | { |
Bram Moolenaar | 8f4ac01 | 2014-08-10 13:38:34 +0200 | [diff] [blame] | 1479 | unserialize_pos(bi, &info->vi_start); |
| 1480 | unserialize_pos(bi, &info->vi_end); |
| 1481 | info->vi_mode = undo_read_4c(bi); |
| 1482 | info->vi_curswant = undo_read_4c(bi); |
Bram Moolenaar | 9db5806 | 2010-05-29 20:33:07 +0200 | [diff] [blame] | 1483 | } |
| 1484 | |
| 1485 | /* |
| 1486 | * Write the undo tree in an undo file. |
| 1487 | * When "name" is not NULL, use it as the name of the undo file. |
| 1488 | * Otherwise use buf->b_ffname to generate the undo file name. |
| 1489 | * "buf" must never be null, buf->b_ffname is used to obtain the original file |
| 1490 | * permissions. |
| 1491 | * "forceit" is TRUE for ":wundo!", FALSE otherwise. |
| 1492 | * "hash[UNDO_HASH_SIZE]" must be the hash value of the buffer text. |
| 1493 | */ |
| 1494 | void |
Bram Moolenaar | 764b23c | 2016-01-30 21:10:09 +0100 | [diff] [blame] | 1495 | u_write_undo( |
| 1496 | char_u *name, |
| 1497 | int forceit, |
| 1498 | buf_T *buf, |
| 1499 | char_u *hash) |
Bram Moolenaar | 9db5806 | 2010-05-29 20:33:07 +0200 | [diff] [blame] | 1500 | { |
| 1501 | u_header_T *uhp; |
Bram Moolenaar | 9db5806 | 2010-05-29 20:33:07 +0200 | [diff] [blame] | 1502 | char_u *file_name; |
Bram Moolenaar | 6ed8ed8 | 2010-05-30 20:40:11 +0200 | [diff] [blame] | 1503 | int mark; |
Bram Moolenaar | 9db5806 | 2010-05-29 20:33:07 +0200 | [diff] [blame] | 1504 | #ifdef U_DEBUG |
| 1505 | int headers_written = 0; |
| 1506 | #endif |
| 1507 | int fd; |
| 1508 | FILE *fp = NULL; |
| 1509 | int perm; |
| 1510 | int write_ok = FALSE; |
| 1511 | #ifdef UNIX |
| 1512 | int st_old_valid = FALSE; |
Bram Moolenaar | 8767f52 | 2016-07-01 17:17:39 +0200 | [diff] [blame] | 1513 | stat_T st_old; |
| 1514 | stat_T st_new; |
Bram Moolenaar | 9db5806 | 2010-05-29 20:33:07 +0200 | [diff] [blame] | 1515 | #endif |
Bram Moolenaar | 8f4ac01 | 2014-08-10 13:38:34 +0200 | [diff] [blame] | 1516 | bufinfo_T bi; |
| 1517 | |
Bram Moolenaar | 5a669b9 | 2014-08-12 20:14:33 +0200 | [diff] [blame] | 1518 | vim_memset(&bi, 0, sizeof(bi)); |
Bram Moolenaar | 9db5806 | 2010-05-29 20:33:07 +0200 | [diff] [blame] | 1519 | |
| 1520 | if (name == NULL) |
| 1521 | { |
Bram Moolenaar | cc448b3 | 2010-07-14 16:52:17 +0200 | [diff] [blame] | 1522 | file_name = u_get_undo_file_name(buf->b_ffname, FALSE); |
Bram Moolenaar | 9db5806 | 2010-05-29 20:33:07 +0200 | [diff] [blame] | 1523 | if (file_name == NULL) |
| 1524 | { |
| 1525 | if (p_verbose > 0) |
Bram Moolenaar | 504a821 | 2010-05-30 17:17:42 +0200 | [diff] [blame] | 1526 | { |
| 1527 | verbose_enter(); |
| 1528 | smsg((char_u *) |
| 1529 | _("Cannot write undo file in any directory in 'undodir'")); |
| 1530 | verbose_leave(); |
| 1531 | } |
Bram Moolenaar | 9db5806 | 2010-05-29 20:33:07 +0200 | [diff] [blame] | 1532 | return; |
| 1533 | } |
| 1534 | } |
| 1535 | else |
Bram Moolenaar | cc448b3 | 2010-07-14 16:52:17 +0200 | [diff] [blame] | 1536 | file_name = name; |
Bram Moolenaar | 9db5806 | 2010-05-29 20:33:07 +0200 | [diff] [blame] | 1537 | |
| 1538 | /* |
| 1539 | * Decide about the permission to use for the undo file. If the buffer |
| 1540 | * has a name use the permission of the original file. Otherwise only |
| 1541 | * allow the user to access the undo file. |
| 1542 | */ |
| 1543 | perm = 0600; |
| 1544 | if (buf->b_ffname != NULL) |
| 1545 | { |
| 1546 | #ifdef UNIX |
| 1547 | if (mch_stat((char *)buf->b_ffname, &st_old) >= 0) |
| 1548 | { |
| 1549 | perm = st_old.st_mode; |
| 1550 | st_old_valid = TRUE; |
| 1551 | } |
| 1552 | #else |
| 1553 | perm = mch_getperm(buf->b_ffname); |
| 1554 | if (perm < 0) |
| 1555 | perm = 0600; |
| 1556 | #endif |
| 1557 | } |
| 1558 | |
Bram Moolenaar | 3cbac30 | 2015-04-21 16:12:06 +0200 | [diff] [blame] | 1559 | /* strip any s-bit and executable bit */ |
| 1560 | perm = perm & 0666; |
Bram Moolenaar | 9db5806 | 2010-05-29 20:33:07 +0200 | [diff] [blame] | 1561 | |
| 1562 | /* If the undo file already exists, verify that it actually is an undo |
| 1563 | * file, and delete it. */ |
| 1564 | if (mch_getperm(file_name) >= 0) |
| 1565 | { |
| 1566 | if (name == NULL || !forceit) |
| 1567 | { |
| 1568 | /* Check we can read it and it's an undo file. */ |
| 1569 | fd = mch_open((char *)file_name, O_RDONLY|O_EXTRA, 0); |
| 1570 | if (fd < 0) |
| 1571 | { |
| 1572 | if (name != NULL || p_verbose > 0) |
Bram Moolenaar | 504a821 | 2010-05-30 17:17:42 +0200 | [diff] [blame] | 1573 | { |
| 1574 | if (name == NULL) |
| 1575 | verbose_enter(); |
| 1576 | smsg((char_u *) |
| 1577 | _("Will not overwrite with undo file, cannot read: %s"), |
Bram Moolenaar | 9db5806 | 2010-05-29 20:33:07 +0200 | [diff] [blame] | 1578 | file_name); |
Bram Moolenaar | 504a821 | 2010-05-30 17:17:42 +0200 | [diff] [blame] | 1579 | if (name == NULL) |
| 1580 | verbose_leave(); |
| 1581 | } |
Bram Moolenaar | 9db5806 | 2010-05-29 20:33:07 +0200 | [diff] [blame] | 1582 | goto theend; |
| 1583 | } |
| 1584 | else |
| 1585 | { |
Bram Moolenaar | f506c5b | 2010-06-22 06:28:58 +0200 | [diff] [blame] | 1586 | char_u mbuf[UF_START_MAGIC_LEN]; |
Bram Moolenaar | 9db5806 | 2010-05-29 20:33:07 +0200 | [diff] [blame] | 1587 | int len; |
| 1588 | |
Bram Moolenaar | 540fc6f | 2010-12-17 16:27:16 +0100 | [diff] [blame] | 1589 | len = read_eintr(fd, mbuf, UF_START_MAGIC_LEN); |
Bram Moolenaar | 9db5806 | 2010-05-29 20:33:07 +0200 | [diff] [blame] | 1590 | close(fd); |
| 1591 | if (len < UF_START_MAGIC_LEN |
Bram Moolenaar | f506c5b | 2010-06-22 06:28:58 +0200 | [diff] [blame] | 1592 | || memcmp(mbuf, UF_START_MAGIC, UF_START_MAGIC_LEN) != 0) |
Bram Moolenaar | 9db5806 | 2010-05-29 20:33:07 +0200 | [diff] [blame] | 1593 | { |
| 1594 | if (name != NULL || p_verbose > 0) |
Bram Moolenaar | 504a821 | 2010-05-30 17:17:42 +0200 | [diff] [blame] | 1595 | { |
| 1596 | if (name == NULL) |
| 1597 | verbose_enter(); |
Bram Moolenaar | 6ed8ed8 | 2010-05-30 20:40:11 +0200 | [diff] [blame] | 1598 | smsg((char_u *) |
| 1599 | _("Will not overwrite, this is not an undo file: %s"), |
Bram Moolenaar | 9db5806 | 2010-05-29 20:33:07 +0200 | [diff] [blame] | 1600 | file_name); |
Bram Moolenaar | 504a821 | 2010-05-30 17:17:42 +0200 | [diff] [blame] | 1601 | if (name == NULL) |
| 1602 | verbose_leave(); |
| 1603 | } |
Bram Moolenaar | 9db5806 | 2010-05-29 20:33:07 +0200 | [diff] [blame] | 1604 | goto theend; |
| 1605 | } |
| 1606 | } |
| 1607 | } |
| 1608 | mch_remove(file_name); |
| 1609 | } |
| 1610 | |
Bram Moolenaar | 504a821 | 2010-05-30 17:17:42 +0200 | [diff] [blame] | 1611 | /* If there is no undo information at all, quit here after deleting any |
| 1612 | * existing undo file. */ |
Bram Moolenaar | 6ed8ed8 | 2010-05-30 20:40:11 +0200 | [diff] [blame] | 1613 | if (buf->b_u_numhead == 0 && buf->b_u_line_ptr == NULL) |
Bram Moolenaar | 504a821 | 2010-05-30 17:17:42 +0200 | [diff] [blame] | 1614 | { |
| 1615 | if (p_verbose > 0) |
Bram Moolenaar | 97ea511 | 2010-06-12 06:46:44 +0200 | [diff] [blame] | 1616 | verb_msg((char_u *)_("Skipping undo file write, nothing to undo")); |
Bram Moolenaar | 504a821 | 2010-05-30 17:17:42 +0200 | [diff] [blame] | 1617 | goto theend; |
| 1618 | } |
| 1619 | |
Bram Moolenaar | 9db5806 | 2010-05-29 20:33:07 +0200 | [diff] [blame] | 1620 | fd = mch_open((char *)file_name, |
| 1621 | O_CREAT|O_EXTRA|O_WRONLY|O_EXCL|O_NOFOLLOW, perm); |
| 1622 | if (fd < 0) |
| 1623 | { |
Bram Moolenaar | cc448b3 | 2010-07-14 16:52:17 +0200 | [diff] [blame] | 1624 | EMSG2(_(e_not_open), file_name); |
Bram Moolenaar | 9db5806 | 2010-05-29 20:33:07 +0200 | [diff] [blame] | 1625 | goto theend; |
| 1626 | } |
| 1627 | (void)mch_setperm(file_name, perm); |
| 1628 | if (p_verbose > 0) |
Bram Moolenaar | 504a821 | 2010-05-30 17:17:42 +0200 | [diff] [blame] | 1629 | { |
| 1630 | verbose_enter(); |
Bram Moolenaar | 9db5806 | 2010-05-29 20:33:07 +0200 | [diff] [blame] | 1631 | smsg((char_u *)_("Writing undo file: %s"), file_name); |
Bram Moolenaar | 504a821 | 2010-05-30 17:17:42 +0200 | [diff] [blame] | 1632 | verbose_leave(); |
| 1633 | } |
Bram Moolenaar | 9db5806 | 2010-05-29 20:33:07 +0200 | [diff] [blame] | 1634 | |
Bram Moolenaar | 6773b2b | 2010-05-30 16:01:37 +0200 | [diff] [blame] | 1635 | #ifdef U_DEBUG |
Bram Moolenaar | 504a821 | 2010-05-30 17:17:42 +0200 | [diff] [blame] | 1636 | /* Check there is no problem in undo info before writing. */ |
Bram Moolenaar | 6773b2b | 2010-05-30 16:01:37 +0200 | [diff] [blame] | 1637 | u_check(FALSE); |
| 1638 | #endif |
| 1639 | |
Bram Moolenaar | 9db5806 | 2010-05-29 20:33:07 +0200 | [diff] [blame] | 1640 | #ifdef UNIX |
| 1641 | /* |
| 1642 | * Try to set the group of the undo file same as the original file. If |
| 1643 | * this fails, set the protection bits for the group same as the |
| 1644 | * protection bits for others. |
| 1645 | */ |
Bram Moolenaar | ce69e82 | 2010-07-21 20:31:07 +0200 | [diff] [blame] | 1646 | if (st_old_valid |
| 1647 | && mch_stat((char *)file_name, &st_new) >= 0 |
| 1648 | && st_new.st_gid != st_old.st_gid |
Bram Moolenaar | 9db5806 | 2010-05-29 20:33:07 +0200 | [diff] [blame] | 1649 | # ifdef HAVE_FCHOWN /* sequent-ptx lacks fchown() */ |
Bram Moolenaar | ce69e82 | 2010-07-21 20:31:07 +0200 | [diff] [blame] | 1650 | && fchown(fd, (uid_t)-1, st_old.st_gid) != 0 |
Bram Moolenaar | 9db5806 | 2010-05-29 20:33:07 +0200 | [diff] [blame] | 1651 | # endif |
| 1652 | ) |
| 1653 | mch_setperm(file_name, (perm & 0707) | ((perm & 07) << 3)); |
Bram Moolenaar | 5bd32f4 | 2014-04-02 14:05:38 +0200 | [diff] [blame] | 1654 | # if defined(HAVE_SELINUX) || defined(HAVE_SMACK) |
Bram Moolenaar | 9db5806 | 2010-05-29 20:33:07 +0200 | [diff] [blame] | 1655 | if (buf->b_ffname != NULL) |
| 1656 | mch_copy_sec(buf->b_ffname, file_name); |
| 1657 | # endif |
| 1658 | #endif |
| 1659 | |
| 1660 | fp = fdopen(fd, "w"); |
| 1661 | if (fp == NULL) |
| 1662 | { |
Bram Moolenaar | cc448b3 | 2010-07-14 16:52:17 +0200 | [diff] [blame] | 1663 | EMSG2(_(e_not_open), file_name); |
Bram Moolenaar | 9db5806 | 2010-05-29 20:33:07 +0200 | [diff] [blame] | 1664 | close(fd); |
| 1665 | mch_remove(file_name); |
| 1666 | goto theend; |
| 1667 | } |
| 1668 | |
Bram Moolenaar | 6773b2b | 2010-05-30 16:01:37 +0200 | [diff] [blame] | 1669 | /* Undo must be synced. */ |
| 1670 | u_sync(TRUE); |
| 1671 | |
Bram Moolenaar | 6ed8ed8 | 2010-05-30 20:40:11 +0200 | [diff] [blame] | 1672 | /* |
Bram Moolenaar | 8f4ac01 | 2014-08-10 13:38:34 +0200 | [diff] [blame] | 1673 | * Write the header. Initializes encryption, if enabled. |
Bram Moolenaar | 6ed8ed8 | 2010-05-30 20:40:11 +0200 | [diff] [blame] | 1674 | */ |
Bram Moolenaar | 8f4ac01 | 2014-08-10 13:38:34 +0200 | [diff] [blame] | 1675 | bi.bi_buf = buf; |
| 1676 | bi.bi_fp = fp; |
| 1677 | if (serialize_header(&bi, hash) == FAIL) |
Bram Moolenaar | 9db5806 | 2010-05-29 20:33:07 +0200 | [diff] [blame] | 1678 | goto write_error; |
Bram Moolenaar | 9db5806 | 2010-05-29 20:33:07 +0200 | [diff] [blame] | 1679 | |
| 1680 | /* |
| 1681 | * Iteratively serialize UHPs and their UEPs from the top down. |
| 1682 | */ |
| 1683 | mark = ++lastmark; |
| 1684 | uhp = buf->b_u_oldhead; |
| 1685 | while (uhp != NULL) |
| 1686 | { |
Bram Moolenaar | cc448b3 | 2010-07-14 16:52:17 +0200 | [diff] [blame] | 1687 | /* Serialize current UHP if we haven't seen it */ |
| 1688 | if (uhp->uh_walk != mark) |
| 1689 | { |
| 1690 | uhp->uh_walk = mark; |
Bram Moolenaar | 9db5806 | 2010-05-29 20:33:07 +0200 | [diff] [blame] | 1691 | #ifdef U_DEBUG |
| 1692 | ++headers_written; |
| 1693 | #endif |
Bram Moolenaar | 8f4ac01 | 2014-08-10 13:38:34 +0200 | [diff] [blame] | 1694 | if (serialize_uhp(&bi, uhp) == FAIL) |
Bram Moolenaar | 9db5806 | 2010-05-29 20:33:07 +0200 | [diff] [blame] | 1695 | goto write_error; |
Bram Moolenaar | cc448b3 | 2010-07-14 16:52:17 +0200 | [diff] [blame] | 1696 | } |
Bram Moolenaar | 9db5806 | 2010-05-29 20:33:07 +0200 | [diff] [blame] | 1697 | |
Bram Moolenaar | cc448b3 | 2010-07-14 16:52:17 +0200 | [diff] [blame] | 1698 | /* Now walk through the tree - algorithm from undo_time(). */ |
| 1699 | if (uhp->uh_prev.ptr != NULL && uhp->uh_prev.ptr->uh_walk != mark) |
| 1700 | uhp = uhp->uh_prev.ptr; |
| 1701 | else if (uhp->uh_alt_next.ptr != NULL |
Bram Moolenaar | 83d09bb | 2010-06-01 19:58:08 +0200 | [diff] [blame] | 1702 | && uhp->uh_alt_next.ptr->uh_walk != mark) |
Bram Moolenaar | cc448b3 | 2010-07-14 16:52:17 +0200 | [diff] [blame] | 1703 | uhp = uhp->uh_alt_next.ptr; |
| 1704 | else if (uhp->uh_next.ptr != NULL && uhp->uh_alt_prev.ptr == NULL |
Bram Moolenaar | 83d09bb | 2010-06-01 19:58:08 +0200 | [diff] [blame] | 1705 | && uhp->uh_next.ptr->uh_walk != mark) |
Bram Moolenaar | cc448b3 | 2010-07-14 16:52:17 +0200 | [diff] [blame] | 1706 | uhp = uhp->uh_next.ptr; |
| 1707 | else if (uhp->uh_alt_prev.ptr != NULL) |
| 1708 | uhp = uhp->uh_alt_prev.ptr; |
| 1709 | else |
| 1710 | uhp = uhp->uh_next.ptr; |
Bram Moolenaar | 9db5806 | 2010-05-29 20:33:07 +0200 | [diff] [blame] | 1711 | } |
| 1712 | |
Bram Moolenaar | 8f4ac01 | 2014-08-10 13:38:34 +0200 | [diff] [blame] | 1713 | if (undo_write_bytes(&bi, (long_u)UF_HEADER_END_MAGIC, 2) == OK) |
Bram Moolenaar | 9db5806 | 2010-05-29 20:33:07 +0200 | [diff] [blame] | 1714 | write_ok = TRUE; |
| 1715 | #ifdef U_DEBUG |
| 1716 | if (headers_written != buf->b_u_numhead) |
Bram Moolenaar | 570064c | 2013-06-10 20:25:10 +0200 | [diff] [blame] | 1717 | { |
| 1718 | EMSGN("Written %ld headers, ...", headers_written); |
| 1719 | EMSGN("... but numhead is %ld", buf->b_u_numhead); |
| 1720 | } |
Bram Moolenaar | 9db5806 | 2010-05-29 20:33:07 +0200 | [diff] [blame] | 1721 | #endif |
| 1722 | |
Bram Moolenaar | 8f4ac01 | 2014-08-10 13:38:34 +0200 | [diff] [blame] | 1723 | #ifdef FEAT_CRYPT |
| 1724 | if (bi.bi_state != NULL && undo_flush(&bi) == FAIL) |
| 1725 | write_ok = FALSE; |
| 1726 | #endif |
| 1727 | |
Bram Moolenaar | 9db5806 | 2010-05-29 20:33:07 +0200 | [diff] [blame] | 1728 | write_error: |
| 1729 | fclose(fp); |
| 1730 | if (!write_ok) |
Bram Moolenaar | cc448b3 | 2010-07-14 16:52:17 +0200 | [diff] [blame] | 1731 | EMSG2(_("E829: write error in undo file: %s"), file_name); |
Bram Moolenaar | 9db5806 | 2010-05-29 20:33:07 +0200 | [diff] [blame] | 1732 | |
Bram Moolenaar | d057301 | 2017-10-28 21:11:06 +0200 | [diff] [blame] | 1733 | #if defined(WIN3264) |
Bram Moolenaar | 6ed8ed8 | 2010-05-30 20:40:11 +0200 | [diff] [blame] | 1734 | /* Copy file attributes; for systems where this can only be done after |
| 1735 | * closing the file. */ |
Bram Moolenaar | 9db5806 | 2010-05-29 20:33:07 +0200 | [diff] [blame] | 1736 | if (buf->b_ffname != NULL) |
| 1737 | (void)mch_copy_file_attribute(buf->b_ffname, file_name); |
| 1738 | #endif |
| 1739 | #ifdef HAVE_ACL |
| 1740 | if (buf->b_ffname != NULL) |
| 1741 | { |
| 1742 | vim_acl_T acl; |
| 1743 | |
| 1744 | /* For systems that support ACL: get the ACL from the original file. */ |
| 1745 | acl = mch_get_acl(buf->b_ffname); |
| 1746 | mch_set_acl(file_name, acl); |
Bram Moolenaar | d2aed44 | 2012-06-01 13:46:12 +0200 | [diff] [blame] | 1747 | mch_free_acl(acl); |
Bram Moolenaar | 9db5806 | 2010-05-29 20:33:07 +0200 | [diff] [blame] | 1748 | } |
| 1749 | #endif |
| 1750 | |
| 1751 | theend: |
Bram Moolenaar | a8ffcbb | 2010-06-21 06:15:46 +0200 | [diff] [blame] | 1752 | #ifdef FEAT_CRYPT |
Bram Moolenaar | 8f4ac01 | 2014-08-10 13:38:34 +0200 | [diff] [blame] | 1753 | if (bi.bi_state != NULL) |
| 1754 | crypt_free_state(bi.bi_state); |
| 1755 | vim_free(bi.bi_buffer); |
Bram Moolenaar | a8ffcbb | 2010-06-21 06:15:46 +0200 | [diff] [blame] | 1756 | #endif |
Bram Moolenaar | 9db5806 | 2010-05-29 20:33:07 +0200 | [diff] [blame] | 1757 | if (file_name != name) |
| 1758 | vim_free(file_name); |
| 1759 | } |
| 1760 | |
Bram Moolenaar | 55debbe | 2010-05-23 23:34:36 +0200 | [diff] [blame] | 1761 | /* |
| 1762 | * Load the undo tree from an undo file. |
| 1763 | * If "name" is not NULL use it as the undo file name. This also means being |
| 1764 | * a bit more verbose. |
| 1765 | * Otherwise use curbuf->b_ffname to generate the undo file name. |
| 1766 | * "hash[UNDO_HASH_SIZE]" must be the hash value of the buffer text. |
| 1767 | */ |
| 1768 | void |
Bram Moolenaar | 764b23c | 2016-01-30 21:10:09 +0100 | [diff] [blame] | 1769 | u_read_undo(char_u *name, char_u *hash, char_u *orig_name) |
Bram Moolenaar | 55debbe | 2010-05-23 23:34:36 +0200 | [diff] [blame] | 1770 | { |
| 1771 | char_u *file_name; |
| 1772 | FILE *fp; |
Bram Moolenaar | 9db5806 | 2010-05-29 20:33:07 +0200 | [diff] [blame] | 1773 | long version, str_len; |
Bram Moolenaar | 55debbe | 2010-05-23 23:34:36 +0200 | [diff] [blame] | 1774 | char_u *line_ptr = NULL; |
| 1775 | linenr_T line_lnum; |
| 1776 | colnr_T line_colnr; |
| 1777 | linenr_T line_count; |
Bram Moolenaar | 3eb1637 | 2017-02-26 18:11:36 +0100 | [diff] [blame] | 1778 | long num_head = 0; |
Bram Moolenaar | 55debbe | 2010-05-23 23:34:36 +0200 | [diff] [blame] | 1779 | long old_header_seq, new_header_seq, cur_header_seq; |
| 1780 | long seq_last, seq_cur; |
Bram Moolenaar | b2c0350 | 2010-07-02 20:20:09 +0200 | [diff] [blame] | 1781 | long last_save_nr = 0; |
Bram Moolenaar | 55debbe | 2010-05-23 23:34:36 +0200 | [diff] [blame] | 1782 | short old_idx = -1, new_idx = -1, cur_idx = -1; |
| 1783 | long num_read_uhps = 0; |
| 1784 | time_t seq_time; |
| 1785 | int i, j; |
| 1786 | int c; |
Bram Moolenaar | 55debbe | 2010-05-23 23:34:36 +0200 | [diff] [blame] | 1787 | u_header_T *uhp; |
| 1788 | u_header_T **uhp_table = NULL; |
| 1789 | char_u read_hash[UNDO_HASH_SIZE]; |
Bram Moolenaar | 9db5806 | 2010-05-29 20:33:07 +0200 | [diff] [blame] | 1790 | char_u magic_buf[UF_START_MAGIC_LEN]; |
| 1791 | #ifdef U_DEBUG |
| 1792 | int *uhp_table_used; |
| 1793 | #endif |
Bram Moolenaar | 6ed8ed8 | 2010-05-30 20:40:11 +0200 | [diff] [blame] | 1794 | #ifdef UNIX |
Bram Moolenaar | 8767f52 | 2016-07-01 17:17:39 +0200 | [diff] [blame] | 1795 | stat_T st_orig; |
| 1796 | stat_T st_undo; |
Bram Moolenaar | 6ed8ed8 | 2010-05-30 20:40:11 +0200 | [diff] [blame] | 1797 | #endif |
Bram Moolenaar | 8f4ac01 | 2014-08-10 13:38:34 +0200 | [diff] [blame] | 1798 | bufinfo_T bi; |
Bram Moolenaar | 55debbe | 2010-05-23 23:34:36 +0200 | [diff] [blame] | 1799 | |
Bram Moolenaar | 5a669b9 | 2014-08-12 20:14:33 +0200 | [diff] [blame] | 1800 | vim_memset(&bi, 0, sizeof(bi)); |
Bram Moolenaar | 55debbe | 2010-05-23 23:34:36 +0200 | [diff] [blame] | 1801 | if (name == NULL) |
| 1802 | { |
Bram Moolenaar | cc448b3 | 2010-07-14 16:52:17 +0200 | [diff] [blame] | 1803 | file_name = u_get_undo_file_name(curbuf->b_ffname, TRUE); |
Bram Moolenaar | 55debbe | 2010-05-23 23:34:36 +0200 | [diff] [blame] | 1804 | if (file_name == NULL) |
| 1805 | return; |
Bram Moolenaar | 6ed8ed8 | 2010-05-30 20:40:11 +0200 | [diff] [blame] | 1806 | |
| 1807 | #ifdef UNIX |
| 1808 | /* For safety we only read an undo file if the owner is equal to the |
Bram Moolenaar | 3b26239 | 2013-09-08 15:40:49 +0200 | [diff] [blame] | 1809 | * owner of the text file or equal to the current user. */ |
Bram Moolenaar | 6ed8ed8 | 2010-05-30 20:40:11 +0200 | [diff] [blame] | 1810 | if (mch_stat((char *)orig_name, &st_orig) >= 0 |
| 1811 | && mch_stat((char *)file_name, &st_undo) >= 0 |
Bram Moolenaar | 3b26239 | 2013-09-08 15:40:49 +0200 | [diff] [blame] | 1812 | && st_orig.st_uid != st_undo.st_uid |
| 1813 | && st_undo.st_uid != getuid()) |
Bram Moolenaar | 6ed8ed8 | 2010-05-30 20:40:11 +0200 | [diff] [blame] | 1814 | { |
| 1815 | if (p_verbose > 0) |
| 1816 | { |
| 1817 | verbose_enter(); |
| 1818 | smsg((char_u *)_("Not reading undo file, owner differs: %s"), |
| 1819 | file_name); |
| 1820 | verbose_leave(); |
| 1821 | } |
| 1822 | return; |
| 1823 | } |
| 1824 | #endif |
Bram Moolenaar | 55debbe | 2010-05-23 23:34:36 +0200 | [diff] [blame] | 1825 | } |
| 1826 | else |
Bram Moolenaar | cc448b3 | 2010-07-14 16:52:17 +0200 | [diff] [blame] | 1827 | file_name = name; |
Bram Moolenaar | 55debbe | 2010-05-23 23:34:36 +0200 | [diff] [blame] | 1828 | |
| 1829 | if (p_verbose > 0) |
Bram Moolenaar | 504a821 | 2010-05-30 17:17:42 +0200 | [diff] [blame] | 1830 | { |
| 1831 | verbose_enter(); |
Bram Moolenaar | 55debbe | 2010-05-23 23:34:36 +0200 | [diff] [blame] | 1832 | smsg((char_u *)_("Reading undo file: %s"), file_name); |
Bram Moolenaar | 504a821 | 2010-05-30 17:17:42 +0200 | [diff] [blame] | 1833 | verbose_leave(); |
| 1834 | } |
Bram Moolenaar | 6ed8ed8 | 2010-05-30 20:40:11 +0200 | [diff] [blame] | 1835 | |
Bram Moolenaar | 55debbe | 2010-05-23 23:34:36 +0200 | [diff] [blame] | 1836 | fp = mch_fopen((char *)file_name, "r"); |
| 1837 | if (fp == NULL) |
| 1838 | { |
Bram Moolenaar | cc448b3 | 2010-07-14 16:52:17 +0200 | [diff] [blame] | 1839 | if (name != NULL || p_verbose > 0) |
| 1840 | EMSG2(_("E822: Cannot open undo file for reading: %s"), file_name); |
Bram Moolenaar | 55debbe | 2010-05-23 23:34:36 +0200 | [diff] [blame] | 1841 | goto error; |
| 1842 | } |
Bram Moolenaar | 8f4ac01 | 2014-08-10 13:38:34 +0200 | [diff] [blame] | 1843 | bi.bi_buf = curbuf; |
| 1844 | bi.bi_fp = fp; |
Bram Moolenaar | 55debbe | 2010-05-23 23:34:36 +0200 | [diff] [blame] | 1845 | |
Bram Moolenaar | 9db5806 | 2010-05-29 20:33:07 +0200 | [diff] [blame] | 1846 | /* |
| 1847 | * Read the undo file header. |
| 1848 | */ |
| 1849 | if (fread(magic_buf, UF_START_MAGIC_LEN, 1, fp) != 1 |
| 1850 | || memcmp(magic_buf, UF_START_MAGIC, UF_START_MAGIC_LEN) != 0) |
Bram Moolenaar | 55debbe | 2010-05-23 23:34:36 +0200 | [diff] [blame] | 1851 | { |
Bram Moolenaar | 9db5806 | 2010-05-29 20:33:07 +0200 | [diff] [blame] | 1852 | EMSG2(_("E823: Not an undo file: %s"), file_name); |
Bram Moolenaar | cc448b3 | 2010-07-14 16:52:17 +0200 | [diff] [blame] | 1853 | goto error; |
Bram Moolenaar | 55debbe | 2010-05-23 23:34:36 +0200 | [diff] [blame] | 1854 | } |
| 1855 | version = get2c(fp); |
Bram Moolenaar | 69154f2 | 2010-07-18 21:42:34 +0200 | [diff] [blame] | 1856 | if (version == UF_VERSION_CRYPT) |
Bram Moolenaar | a3ff49f | 2010-05-30 22:48:02 +0200 | [diff] [blame] | 1857 | { |
| 1858 | #ifdef FEAT_CRYPT |
Bram Moolenaar | 56be950 | 2010-06-06 14:20:26 +0200 | [diff] [blame] | 1859 | if (*curbuf->b_p_key == NUL) |
| 1860 | { |
| 1861 | EMSG2(_("E832: Non-encrypted file has encrypted undo file: %s"), |
| 1862 | file_name); |
| 1863 | goto error; |
| 1864 | } |
Bram Moolenaar | 8f4ac01 | 2014-08-10 13:38:34 +0200 | [diff] [blame] | 1865 | bi.bi_state = crypt_create_from_file(fp, curbuf->b_p_key); |
| 1866 | if (bi.bi_state == NULL) |
Bram Moolenaar | a3ff49f | 2010-05-30 22:48:02 +0200 | [diff] [blame] | 1867 | { |
| 1868 | EMSG2(_("E826: Undo file decryption failed: %s"), file_name); |
| 1869 | goto error; |
| 1870 | } |
Bram Moolenaar | 8f4ac01 | 2014-08-10 13:38:34 +0200 | [diff] [blame] | 1871 | if (crypt_whole_undofile(bi.bi_state->method_nr)) |
| 1872 | { |
| 1873 | bi.bi_buffer = alloc(CRYPT_BUF_SIZE); |
| 1874 | if (bi.bi_buffer == NULL) |
| 1875 | { |
| 1876 | crypt_free_state(bi.bi_state); |
| 1877 | bi.bi_state = NULL; |
| 1878 | goto error; |
| 1879 | } |
| 1880 | bi.bi_avail = 0; |
| 1881 | bi.bi_used = 0; |
| 1882 | } |
Bram Moolenaar | a3ff49f | 2010-05-30 22:48:02 +0200 | [diff] [blame] | 1883 | #else |
Bram Moolenaar | cc448b3 | 2010-07-14 16:52:17 +0200 | [diff] [blame] | 1884 | EMSG2(_("E827: Undo file is encrypted: %s"), file_name); |
| 1885 | goto error; |
Bram Moolenaar | a3ff49f | 2010-05-30 22:48:02 +0200 | [diff] [blame] | 1886 | #endif |
| 1887 | } |
Bram Moolenaar | 69154f2 | 2010-07-18 21:42:34 +0200 | [diff] [blame] | 1888 | else if (version != UF_VERSION) |
Bram Moolenaar | 55debbe | 2010-05-23 23:34:36 +0200 | [diff] [blame] | 1889 | { |
Bram Moolenaar | cc448b3 | 2010-07-14 16:52:17 +0200 | [diff] [blame] | 1890 | EMSG2(_("E824: Incompatible undo file: %s"), file_name); |
| 1891 | goto error; |
Bram Moolenaar | 55debbe | 2010-05-23 23:34:36 +0200 | [diff] [blame] | 1892 | } |
| 1893 | |
Bram Moolenaar | 8f4ac01 | 2014-08-10 13:38:34 +0200 | [diff] [blame] | 1894 | if (undo_read(&bi, read_hash, (size_t)UNDO_HASH_SIZE) == FAIL) |
Bram Moolenaar | cdf0420 | 2010-05-29 15:11:47 +0200 | [diff] [blame] | 1895 | { |
Bram Moolenaar | 9db5806 | 2010-05-29 20:33:07 +0200 | [diff] [blame] | 1896 | corruption_error("hash", file_name); |
Bram Moolenaar | cc448b3 | 2010-07-14 16:52:17 +0200 | [diff] [blame] | 1897 | goto error; |
Bram Moolenaar | cdf0420 | 2010-05-29 15:11:47 +0200 | [diff] [blame] | 1898 | } |
Bram Moolenaar | 8f4ac01 | 2014-08-10 13:38:34 +0200 | [diff] [blame] | 1899 | line_count = (linenr_T)undo_read_4c(&bi); |
Bram Moolenaar | 55debbe | 2010-05-23 23:34:36 +0200 | [diff] [blame] | 1900 | if (memcmp(hash, read_hash, UNDO_HASH_SIZE) != 0 |
| 1901 | || line_count != curbuf->b_ml.ml_line_count) |
| 1902 | { |
Bram Moolenaar | cc448b3 | 2010-07-14 16:52:17 +0200 | [diff] [blame] | 1903 | if (p_verbose > 0 || name != NULL) |
| 1904 | { |
Bram Moolenaar | 504a821 | 2010-05-30 17:17:42 +0200 | [diff] [blame] | 1905 | if (name == NULL) |
| 1906 | verbose_enter(); |
Bram Moolenaar | cc448b3 | 2010-07-14 16:52:17 +0200 | [diff] [blame] | 1907 | give_warning((char_u *) |
Bram Moolenaar | 6ed8ed8 | 2010-05-30 20:40:11 +0200 | [diff] [blame] | 1908 | _("File contents changed, cannot use undo info"), TRUE); |
Bram Moolenaar | 504a821 | 2010-05-30 17:17:42 +0200 | [diff] [blame] | 1909 | if (name == NULL) |
| 1910 | verbose_leave(); |
Bram Moolenaar | cc448b3 | 2010-07-14 16:52:17 +0200 | [diff] [blame] | 1911 | } |
| 1912 | goto error; |
Bram Moolenaar | 55debbe | 2010-05-23 23:34:36 +0200 | [diff] [blame] | 1913 | } |
| 1914 | |
Bram Moolenaar | 6ed8ed8 | 2010-05-30 20:40:11 +0200 | [diff] [blame] | 1915 | /* Read undo data for "U" command. */ |
Bram Moolenaar | 8f4ac01 | 2014-08-10 13:38:34 +0200 | [diff] [blame] | 1916 | str_len = undo_read_4c(&bi); |
Bram Moolenaar | 55debbe | 2010-05-23 23:34:36 +0200 | [diff] [blame] | 1917 | if (str_len < 0) |
Bram Moolenaar | cc448b3 | 2010-07-14 16:52:17 +0200 | [diff] [blame] | 1918 | goto error; |
Bram Moolenaar | 6ed8ed8 | 2010-05-30 20:40:11 +0200 | [diff] [blame] | 1919 | if (str_len > 0) |
Bram Moolenaar | 8f4ac01 | 2014-08-10 13:38:34 +0200 | [diff] [blame] | 1920 | line_ptr = read_string_decrypt(&bi, str_len); |
| 1921 | line_lnum = (linenr_T)undo_read_4c(&bi); |
| 1922 | line_colnr = (colnr_T)undo_read_4c(&bi); |
Bram Moolenaar | 6ed8ed8 | 2010-05-30 20:40:11 +0200 | [diff] [blame] | 1923 | if (line_lnum < 0 || line_colnr < 0) |
| 1924 | { |
| 1925 | corruption_error("line lnum/col", file_name); |
| 1926 | goto error; |
| 1927 | } |
Bram Moolenaar | 55debbe | 2010-05-23 23:34:36 +0200 | [diff] [blame] | 1928 | |
| 1929 | /* Begin general undo data */ |
Bram Moolenaar | 8f4ac01 | 2014-08-10 13:38:34 +0200 | [diff] [blame] | 1930 | old_header_seq = undo_read_4c(&bi); |
| 1931 | new_header_seq = undo_read_4c(&bi); |
| 1932 | cur_header_seq = undo_read_4c(&bi); |
| 1933 | num_head = undo_read_4c(&bi); |
| 1934 | seq_last = undo_read_4c(&bi); |
| 1935 | seq_cur = undo_read_4c(&bi); |
| 1936 | seq_time = undo_read_time(&bi); |
Bram Moolenaar | 55debbe | 2010-05-23 23:34:36 +0200 | [diff] [blame] | 1937 | |
Bram Moolenaar | 69154f2 | 2010-07-18 21:42:34 +0200 | [diff] [blame] | 1938 | /* Optional header fields. */ |
| 1939 | for (;;) |
| 1940 | { |
Bram Moolenaar | 8f4ac01 | 2014-08-10 13:38:34 +0200 | [diff] [blame] | 1941 | int len = undo_read_byte(&bi); |
Bram Moolenaar | 69154f2 | 2010-07-18 21:42:34 +0200 | [diff] [blame] | 1942 | int what; |
Bram Moolenaar | a800b42 | 2010-06-27 01:15:55 +0200 | [diff] [blame] | 1943 | |
Bram Moolenaar | 69154f2 | 2010-07-18 21:42:34 +0200 | [diff] [blame] | 1944 | if (len == 0 || len == EOF) |
| 1945 | break; |
Bram Moolenaar | 8f4ac01 | 2014-08-10 13:38:34 +0200 | [diff] [blame] | 1946 | what = undo_read_byte(&bi); |
Bram Moolenaar | 69154f2 | 2010-07-18 21:42:34 +0200 | [diff] [blame] | 1947 | switch (what) |
| 1948 | { |
| 1949 | case UF_LAST_SAVE_NR: |
Bram Moolenaar | 8f4ac01 | 2014-08-10 13:38:34 +0200 | [diff] [blame] | 1950 | last_save_nr = undo_read_4c(&bi); |
Bram Moolenaar | a800b42 | 2010-06-27 01:15:55 +0200 | [diff] [blame] | 1951 | break; |
Bram Moolenaar | 69154f2 | 2010-07-18 21:42:34 +0200 | [diff] [blame] | 1952 | default: |
| 1953 | /* field not supported, skip */ |
| 1954 | while (--len >= 0) |
Bram Moolenaar | 8f4ac01 | 2014-08-10 13:38:34 +0200 | [diff] [blame] | 1955 | (void)undo_read_byte(&bi); |
Bram Moolenaar | a800b42 | 2010-06-27 01:15:55 +0200 | [diff] [blame] | 1956 | } |
Bram Moolenaar | 69154f2 | 2010-07-18 21:42:34 +0200 | [diff] [blame] | 1957 | } |
Bram Moolenaar | a800b42 | 2010-06-27 01:15:55 +0200 | [diff] [blame] | 1958 | |
Bram Moolenaar | 55debbe | 2010-05-23 23:34:36 +0200 | [diff] [blame] | 1959 | /* uhp_table will store the freshly created undo headers we allocate |
| 1960 | * until we insert them into curbuf. The table remains sorted by the |
Bram Moolenaar | f05e3b0 | 2010-05-29 15:40:47 +0200 | [diff] [blame] | 1961 | * sequence numbers of the headers. |
| 1962 | * When there are no headers uhp_table is NULL. */ |
| 1963 | if (num_head > 0) |
| 1964 | { |
Bram Moolenaar | 3eb1637 | 2017-02-26 18:11:36 +0100 | [diff] [blame] | 1965 | if (num_head < LONG_MAX / (long)sizeof(u_header_T *)) |
| 1966 | uhp_table = (u_header_T **)U_ALLOC_LINE( |
Bram Moolenaar | f05e3b0 | 2010-05-29 15:40:47 +0200 | [diff] [blame] | 1967 | num_head * sizeof(u_header_T *)); |
| 1968 | if (uhp_table == NULL) |
| 1969 | goto error; |
Bram Moolenaar | f05e3b0 | 2010-05-29 15:40:47 +0200 | [diff] [blame] | 1970 | } |
Bram Moolenaar | 55debbe | 2010-05-23 23:34:36 +0200 | [diff] [blame] | 1971 | |
Bram Moolenaar | 8f4ac01 | 2014-08-10 13:38:34 +0200 | [diff] [blame] | 1972 | while ((c = undo_read_2c(&bi)) == UF_HEADER_MAGIC) |
Bram Moolenaar | 55debbe | 2010-05-23 23:34:36 +0200 | [diff] [blame] | 1973 | { |
Bram Moolenaar | 6a18eb6 | 2010-05-26 21:21:00 +0200 | [diff] [blame] | 1974 | if (num_read_uhps >= num_head) |
| 1975 | { |
Bram Moolenaar | 6ed8ed8 | 2010-05-30 20:40:11 +0200 | [diff] [blame] | 1976 | corruption_error("num_head too small", file_name); |
Bram Moolenaar | 6a18eb6 | 2010-05-26 21:21:00 +0200 | [diff] [blame] | 1977 | goto error; |
| 1978 | } |
| 1979 | |
Bram Moolenaar | 8f4ac01 | 2014-08-10 13:38:34 +0200 | [diff] [blame] | 1980 | uhp = unserialize_uhp(&bi, file_name); |
Bram Moolenaar | 6ed8ed8 | 2010-05-30 20:40:11 +0200 | [diff] [blame] | 1981 | if (uhp == NULL) |
| 1982 | goto error; |
Bram Moolenaar | 6773b2b | 2010-05-30 16:01:37 +0200 | [diff] [blame] | 1983 | uhp_table[num_read_uhps++] = uhp; |
| 1984 | } |
| 1985 | |
| 1986 | if (num_read_uhps != num_head) |
| 1987 | { |
| 1988 | corruption_error("num_head", file_name); |
| 1989 | goto error; |
Bram Moolenaar | 55debbe | 2010-05-23 23:34:36 +0200 | [diff] [blame] | 1990 | } |
Bram Moolenaar | 9db5806 | 2010-05-29 20:33:07 +0200 | [diff] [blame] | 1991 | if (c != UF_HEADER_END_MAGIC) |
Bram Moolenaar | 55debbe | 2010-05-23 23:34:36 +0200 | [diff] [blame] | 1992 | { |
Bram Moolenaar | 9db5806 | 2010-05-29 20:33:07 +0200 | [diff] [blame] | 1993 | corruption_error("end marker", file_name); |
Bram Moolenaar | 55debbe | 2010-05-23 23:34:36 +0200 | [diff] [blame] | 1994 | goto error; |
| 1995 | } |
| 1996 | |
Bram Moolenaar | 9db5806 | 2010-05-29 20:33:07 +0200 | [diff] [blame] | 1997 | #ifdef U_DEBUG |
| 1998 | uhp_table_used = (int *)alloc_clear( |
| 1999 | (unsigned)(sizeof(int) * num_head + 1)); |
| 2000 | # define SET_FLAG(j) ++uhp_table_used[j] |
| 2001 | #else |
| 2002 | # define SET_FLAG(j) |
| 2003 | #endif |
| 2004 | |
Bram Moolenaar | 6ed8ed8 | 2010-05-30 20:40:11 +0200 | [diff] [blame] | 2005 | /* We have put all of the headers into a table. Now we iterate through the |
Bram Moolenaar | 83d09bb | 2010-06-01 19:58:08 +0200 | [diff] [blame] | 2006 | * table and swizzle each sequence number we have stored in uh_*_seq into |
| 2007 | * a pointer corresponding to the header with that sequence number. */ |
Bram Moolenaar | 55debbe | 2010-05-23 23:34:36 +0200 | [diff] [blame] | 2008 | for (i = 0; i < num_head; i++) |
| 2009 | { |
Bram Moolenaar | cc448b3 | 2010-07-14 16:52:17 +0200 | [diff] [blame] | 2010 | uhp = uhp_table[i]; |
| 2011 | if (uhp == NULL) |
| 2012 | continue; |
| 2013 | for (j = 0; j < num_head; j++) |
| 2014 | if (uhp_table[j] != NULL && i != j |
Bram Moolenaar | 83d09bb | 2010-06-01 19:58:08 +0200 | [diff] [blame] | 2015 | && uhp_table[i]->uh_seq == uhp_table[j]->uh_seq) |
Bram Moolenaar | cc448b3 | 2010-07-14 16:52:17 +0200 | [diff] [blame] | 2016 | { |
Bram Moolenaar | 6773b2b | 2010-05-30 16:01:37 +0200 | [diff] [blame] | 2017 | corruption_error("duplicate uh_seq", file_name); |
Bram Moolenaar | cc448b3 | 2010-07-14 16:52:17 +0200 | [diff] [blame] | 2018 | goto error; |
Bram Moolenaar | 6773b2b | 2010-05-30 16:01:37 +0200 | [diff] [blame] | 2019 | } |
Bram Moolenaar | cc448b3 | 2010-07-14 16:52:17 +0200 | [diff] [blame] | 2020 | for (j = 0; j < num_head; j++) |
| 2021 | if (uhp_table[j] != NULL |
Bram Moolenaar | 83d09bb | 2010-06-01 19:58:08 +0200 | [diff] [blame] | 2022 | && uhp_table[j]->uh_seq == uhp->uh_next.seq) |
Bram Moolenaar | 9db5806 | 2010-05-29 20:33:07 +0200 | [diff] [blame] | 2023 | { |
Bram Moolenaar | cc448b3 | 2010-07-14 16:52:17 +0200 | [diff] [blame] | 2024 | uhp->uh_next.ptr = uhp_table[j]; |
Bram Moolenaar | 9db5806 | 2010-05-29 20:33:07 +0200 | [diff] [blame] | 2025 | SET_FLAG(j); |
Bram Moolenaar | 83d09bb | 2010-06-01 19:58:08 +0200 | [diff] [blame] | 2026 | break; |
Bram Moolenaar | 9db5806 | 2010-05-29 20:33:07 +0200 | [diff] [blame] | 2027 | } |
Bram Moolenaar | cc448b3 | 2010-07-14 16:52:17 +0200 | [diff] [blame] | 2028 | for (j = 0; j < num_head; j++) |
| 2029 | if (uhp_table[j] != NULL |
Bram Moolenaar | 83d09bb | 2010-06-01 19:58:08 +0200 | [diff] [blame] | 2030 | && uhp_table[j]->uh_seq == uhp->uh_prev.seq) |
Bram Moolenaar | 9db5806 | 2010-05-29 20:33:07 +0200 | [diff] [blame] | 2031 | { |
Bram Moolenaar | cc448b3 | 2010-07-14 16:52:17 +0200 | [diff] [blame] | 2032 | uhp->uh_prev.ptr = uhp_table[j]; |
Bram Moolenaar | 9db5806 | 2010-05-29 20:33:07 +0200 | [diff] [blame] | 2033 | SET_FLAG(j); |
Bram Moolenaar | 83d09bb | 2010-06-01 19:58:08 +0200 | [diff] [blame] | 2034 | break; |
Bram Moolenaar | 9db5806 | 2010-05-29 20:33:07 +0200 | [diff] [blame] | 2035 | } |
Bram Moolenaar | cc448b3 | 2010-07-14 16:52:17 +0200 | [diff] [blame] | 2036 | for (j = 0; j < num_head; j++) |
| 2037 | if (uhp_table[j] != NULL |
Bram Moolenaar | 83d09bb | 2010-06-01 19:58:08 +0200 | [diff] [blame] | 2038 | && uhp_table[j]->uh_seq == uhp->uh_alt_next.seq) |
Bram Moolenaar | 9db5806 | 2010-05-29 20:33:07 +0200 | [diff] [blame] | 2039 | { |
Bram Moolenaar | cc448b3 | 2010-07-14 16:52:17 +0200 | [diff] [blame] | 2040 | uhp->uh_alt_next.ptr = uhp_table[j]; |
Bram Moolenaar | 9db5806 | 2010-05-29 20:33:07 +0200 | [diff] [blame] | 2041 | SET_FLAG(j); |
Bram Moolenaar | 83d09bb | 2010-06-01 19:58:08 +0200 | [diff] [blame] | 2042 | break; |
Bram Moolenaar | 9db5806 | 2010-05-29 20:33:07 +0200 | [diff] [blame] | 2043 | } |
Bram Moolenaar | cc448b3 | 2010-07-14 16:52:17 +0200 | [diff] [blame] | 2044 | for (j = 0; j < num_head; j++) |
| 2045 | if (uhp_table[j] != NULL |
Bram Moolenaar | 83d09bb | 2010-06-01 19:58:08 +0200 | [diff] [blame] | 2046 | && uhp_table[j]->uh_seq == uhp->uh_alt_prev.seq) |
Bram Moolenaar | 9db5806 | 2010-05-29 20:33:07 +0200 | [diff] [blame] | 2047 | { |
Bram Moolenaar | cc448b3 | 2010-07-14 16:52:17 +0200 | [diff] [blame] | 2048 | uhp->uh_alt_prev.ptr = uhp_table[j]; |
Bram Moolenaar | 9db5806 | 2010-05-29 20:33:07 +0200 | [diff] [blame] | 2049 | SET_FLAG(j); |
Bram Moolenaar | 83d09bb | 2010-06-01 19:58:08 +0200 | [diff] [blame] | 2050 | break; |
Bram Moolenaar | 9db5806 | 2010-05-29 20:33:07 +0200 | [diff] [blame] | 2051 | } |
Bram Moolenaar | cc448b3 | 2010-07-14 16:52:17 +0200 | [diff] [blame] | 2052 | if (old_header_seq > 0 && old_idx < 0 && uhp->uh_seq == old_header_seq) |
Bram Moolenaar | 9db5806 | 2010-05-29 20:33:07 +0200 | [diff] [blame] | 2053 | { |
Bram Moolenaar | cc448b3 | 2010-07-14 16:52:17 +0200 | [diff] [blame] | 2054 | old_idx = i; |
Bram Moolenaar | 9db5806 | 2010-05-29 20:33:07 +0200 | [diff] [blame] | 2055 | SET_FLAG(i); |
| 2056 | } |
Bram Moolenaar | cc448b3 | 2010-07-14 16:52:17 +0200 | [diff] [blame] | 2057 | if (new_header_seq > 0 && new_idx < 0 && uhp->uh_seq == new_header_seq) |
Bram Moolenaar | 9db5806 | 2010-05-29 20:33:07 +0200 | [diff] [blame] | 2058 | { |
Bram Moolenaar | cc448b3 | 2010-07-14 16:52:17 +0200 | [diff] [blame] | 2059 | new_idx = i; |
Bram Moolenaar | 9db5806 | 2010-05-29 20:33:07 +0200 | [diff] [blame] | 2060 | SET_FLAG(i); |
| 2061 | } |
Bram Moolenaar | cc448b3 | 2010-07-14 16:52:17 +0200 | [diff] [blame] | 2062 | if (cur_header_seq > 0 && cur_idx < 0 && uhp->uh_seq == cur_header_seq) |
Bram Moolenaar | 9db5806 | 2010-05-29 20:33:07 +0200 | [diff] [blame] | 2063 | { |
Bram Moolenaar | cc448b3 | 2010-07-14 16:52:17 +0200 | [diff] [blame] | 2064 | cur_idx = i; |
Bram Moolenaar | 9db5806 | 2010-05-29 20:33:07 +0200 | [diff] [blame] | 2065 | SET_FLAG(i); |
| 2066 | } |
Bram Moolenaar | 55debbe | 2010-05-23 23:34:36 +0200 | [diff] [blame] | 2067 | } |
Bram Moolenaar | 9db5806 | 2010-05-29 20:33:07 +0200 | [diff] [blame] | 2068 | |
| 2069 | /* Now that we have read the undo info successfully, free the current undo |
| 2070 | * info and use the info from the file. */ |
Bram Moolenaar | 55debbe | 2010-05-23 23:34:36 +0200 | [diff] [blame] | 2071 | u_blockfree(curbuf); |
Bram Moolenaar | 9db5806 | 2010-05-29 20:33:07 +0200 | [diff] [blame] | 2072 | curbuf->b_u_oldhead = old_idx < 0 ? NULL : uhp_table[old_idx]; |
| 2073 | curbuf->b_u_newhead = new_idx < 0 ? NULL : uhp_table[new_idx]; |
| 2074 | curbuf->b_u_curhead = cur_idx < 0 ? NULL : uhp_table[cur_idx]; |
Bram Moolenaar | 55debbe | 2010-05-23 23:34:36 +0200 | [diff] [blame] | 2075 | curbuf->b_u_line_ptr = line_ptr; |
| 2076 | curbuf->b_u_line_lnum = line_lnum; |
| 2077 | curbuf->b_u_line_colnr = line_colnr; |
| 2078 | curbuf->b_u_numhead = num_head; |
| 2079 | curbuf->b_u_seq_last = seq_last; |
| 2080 | curbuf->b_u_seq_cur = seq_cur; |
Bram Moolenaar | a800b42 | 2010-06-27 01:15:55 +0200 | [diff] [blame] | 2081 | curbuf->b_u_time_cur = seq_time; |
Bram Moolenaar | 730cde9 | 2010-06-27 05:18:54 +0200 | [diff] [blame] | 2082 | curbuf->b_u_save_nr_last = last_save_nr; |
Bram Moolenaar | dba01a0 | 2010-11-03 19:32:42 +0100 | [diff] [blame] | 2083 | curbuf->b_u_save_nr_cur = last_save_nr; |
Bram Moolenaar | 6773b2b | 2010-05-30 16:01:37 +0200 | [diff] [blame] | 2084 | |
| 2085 | curbuf->b_u_synced = TRUE; |
Bram Moolenaar | f05e3b0 | 2010-05-29 15:40:47 +0200 | [diff] [blame] | 2086 | vim_free(uhp_table); |
Bram Moolenaar | 9db5806 | 2010-05-29 20:33:07 +0200 | [diff] [blame] | 2087 | |
Bram Moolenaar | 55debbe | 2010-05-23 23:34:36 +0200 | [diff] [blame] | 2088 | #ifdef U_DEBUG |
Bram Moolenaar | 9db5806 | 2010-05-29 20:33:07 +0200 | [diff] [blame] | 2089 | for (i = 0; i < num_head; ++i) |
| 2090 | if (uhp_table_used[i] == 0) |
| 2091 | EMSGN("uhp_table entry %ld not used, leaking memory", i); |
| 2092 | vim_free(uhp_table_used); |
Bram Moolenaar | 55debbe | 2010-05-23 23:34:36 +0200 | [diff] [blame] | 2093 | u_check(TRUE); |
| 2094 | #endif |
Bram Moolenaar | 9db5806 | 2010-05-29 20:33:07 +0200 | [diff] [blame] | 2095 | |
Bram Moolenaar | 55debbe | 2010-05-23 23:34:36 +0200 | [diff] [blame] | 2096 | if (name != NULL) |
| 2097 | smsg((char_u *)_("Finished reading undo file %s"), file_name); |
| 2098 | goto theend; |
| 2099 | |
| 2100 | error: |
Bram Moolenaar | f05e3b0 | 2010-05-29 15:40:47 +0200 | [diff] [blame] | 2101 | vim_free(line_ptr); |
Bram Moolenaar | 55debbe | 2010-05-23 23:34:36 +0200 | [diff] [blame] | 2102 | if (uhp_table != NULL) |
| 2103 | { |
Bram Moolenaar | cc448b3 | 2010-07-14 16:52:17 +0200 | [diff] [blame] | 2104 | for (i = 0; i < num_read_uhps; i++) |
| 2105 | if (uhp_table[i] != NULL) |
Bram Moolenaar | 6a18eb6 | 2010-05-26 21:21:00 +0200 | [diff] [blame] | 2106 | u_free_uhp(uhp_table[i]); |
Bram Moolenaar | cc448b3 | 2010-07-14 16:52:17 +0200 | [diff] [blame] | 2107 | vim_free(uhp_table); |
Bram Moolenaar | 55debbe | 2010-05-23 23:34:36 +0200 | [diff] [blame] | 2108 | } |
| 2109 | |
| 2110 | theend: |
Bram Moolenaar | a8ffcbb | 2010-06-21 06:15:46 +0200 | [diff] [blame] | 2111 | #ifdef FEAT_CRYPT |
Bram Moolenaar | 8f4ac01 | 2014-08-10 13:38:34 +0200 | [diff] [blame] | 2112 | if (bi.bi_state != NULL) |
| 2113 | crypt_free_state(bi.bi_state); |
| 2114 | vim_free(bi.bi_buffer); |
Bram Moolenaar | a8ffcbb | 2010-06-21 06:15:46 +0200 | [diff] [blame] | 2115 | #endif |
Bram Moolenaar | 55debbe | 2010-05-23 23:34:36 +0200 | [diff] [blame] | 2116 | if (fp != NULL) |
Bram Moolenaar | cc448b3 | 2010-07-14 16:52:17 +0200 | [diff] [blame] | 2117 | fclose(fp); |
Bram Moolenaar | 55debbe | 2010-05-23 23:34:36 +0200 | [diff] [blame] | 2118 | if (file_name != name) |
| 2119 | vim_free(file_name); |
| 2120 | return; |
| 2121 | } |
| 2122 | |
Bram Moolenaar | 55debbe | 2010-05-23 23:34:36 +0200 | [diff] [blame] | 2123 | #endif /* FEAT_PERSISTENT_UNDO */ |
| 2124 | |
| 2125 | |
Bram Moolenaar | 071d427 | 2004-06-13 20:20:40 +0000 | [diff] [blame] | 2126 | /* |
| 2127 | * If 'cpoptions' contains 'u': Undo the previous undo or redo (vi compatible). |
| 2128 | * If 'cpoptions' does not contain 'u': Always undo. |
| 2129 | */ |
| 2130 | void |
Bram Moolenaar | 764b23c | 2016-01-30 21:10:09 +0100 | [diff] [blame] | 2131 | u_undo(int count) |
Bram Moolenaar | 071d427 | 2004-06-13 20:20:40 +0000 | [diff] [blame] | 2132 | { |
| 2133 | /* |
| 2134 | * If we get an undo command while executing a macro, we behave like the |
| 2135 | * original vi. If this happens twice in one macro the result will not |
| 2136 | * be compatible. |
| 2137 | */ |
| 2138 | if (curbuf->b_u_synced == FALSE) |
| 2139 | { |
Bram Moolenaar | 779b74b | 2006-04-10 14:55:34 +0000 | [diff] [blame] | 2140 | u_sync(TRUE); |
Bram Moolenaar | 071d427 | 2004-06-13 20:20:40 +0000 | [diff] [blame] | 2141 | count = 1; |
| 2142 | } |
| 2143 | |
| 2144 | if (vim_strchr(p_cpo, CPO_UNDO) == NULL) |
| 2145 | undo_undoes = TRUE; |
| 2146 | else |
| 2147 | undo_undoes = !undo_undoes; |
| 2148 | u_doit(count); |
| 2149 | } |
| 2150 | |
| 2151 | /* |
| 2152 | * If 'cpoptions' contains 'u': Repeat the previous undo or redo. |
| 2153 | * If 'cpoptions' does not contain 'u': Always redo. |
| 2154 | */ |
| 2155 | void |
Bram Moolenaar | 764b23c | 2016-01-30 21:10:09 +0100 | [diff] [blame] | 2156 | u_redo(int count) |
Bram Moolenaar | 071d427 | 2004-06-13 20:20:40 +0000 | [diff] [blame] | 2157 | { |
| 2158 | if (vim_strchr(p_cpo, CPO_UNDO) == NULL) |
| 2159 | undo_undoes = FALSE; |
| 2160 | u_doit(count); |
| 2161 | } |
| 2162 | |
| 2163 | /* |
| 2164 | * Undo or redo, depending on 'undo_undoes', 'count' times. |
| 2165 | */ |
| 2166 | static void |
Bram Moolenaar | 764b23c | 2016-01-30 21:10:09 +0100 | [diff] [blame] | 2167 | u_doit(int startcount) |
Bram Moolenaar | 071d427 | 2004-06-13 20:20:40 +0000 | [diff] [blame] | 2168 | { |
Bram Moolenaar | ca003e1 | 2006-03-17 23:19:38 +0000 | [diff] [blame] | 2169 | int count = startcount; |
| 2170 | |
Bram Moolenaar | 8ada17c | 2006-01-19 22:16:24 +0000 | [diff] [blame] | 2171 | if (!undo_allowed()) |
Bram Moolenaar | 071d427 | 2004-06-13 20:20:40 +0000 | [diff] [blame] | 2172 | return; |
Bram Moolenaar | 071d427 | 2004-06-13 20:20:40 +0000 | [diff] [blame] | 2173 | |
| 2174 | u_newcount = 0; |
| 2175 | u_oldcount = 0; |
Bram Moolenaar | 19a09a1 | 2005-03-04 23:39:37 +0000 | [diff] [blame] | 2176 | if (curbuf->b_ml.ml_flags & ML_EMPTY) |
| 2177 | u_oldcount = -1; |
Bram Moolenaar | 071d427 | 2004-06-13 20:20:40 +0000 | [diff] [blame] | 2178 | while (count--) |
| 2179 | { |
Bram Moolenaar | b0b5088 | 2010-07-07 18:26:28 +0200 | [diff] [blame] | 2180 | /* Do the change warning now, so that it triggers FileChangedRO when |
| 2181 | * needed. This may cause the file to be reloaded, that must happen |
| 2182 | * before we do anything, because it may change curbuf->b_u_curhead |
| 2183 | * and more. */ |
| 2184 | change_warning(0); |
| 2185 | |
Bram Moolenaar | 071d427 | 2004-06-13 20:20:40 +0000 | [diff] [blame] | 2186 | if (undo_undoes) |
| 2187 | { |
| 2188 | if (curbuf->b_u_curhead == NULL) /* first undo */ |
| 2189 | curbuf->b_u_curhead = curbuf->b_u_newhead; |
Bram Moolenaar | f5a2fd8 | 2013-11-06 05:26:15 +0100 | [diff] [blame] | 2190 | else if (get_undolevel() > 0) /* multi level undo */ |
Bram Moolenaar | 071d427 | 2004-06-13 20:20:40 +0000 | [diff] [blame] | 2191 | /* get next undo */ |
Bram Moolenaar | 83d09bb | 2010-06-01 19:58:08 +0200 | [diff] [blame] | 2192 | curbuf->b_u_curhead = curbuf->b_u_curhead->uh_next.ptr; |
Bram Moolenaar | 071d427 | 2004-06-13 20:20:40 +0000 | [diff] [blame] | 2193 | /* nothing to undo */ |
| 2194 | if (curbuf->b_u_numhead == 0 || curbuf->b_u_curhead == NULL) |
| 2195 | { |
| 2196 | /* stick curbuf->b_u_curhead at end */ |
| 2197 | curbuf->b_u_curhead = curbuf->b_u_oldhead; |
| 2198 | beep_flush(); |
Bram Moolenaar | ca003e1 | 2006-03-17 23:19:38 +0000 | [diff] [blame] | 2199 | if (count == startcount - 1) |
| 2200 | { |
| 2201 | MSG(_("Already at oldest change")); |
| 2202 | return; |
| 2203 | } |
Bram Moolenaar | 071d427 | 2004-06-13 20:20:40 +0000 | [diff] [blame] | 2204 | break; |
| 2205 | } |
| 2206 | |
Bram Moolenaar | ca003e1 | 2006-03-17 23:19:38 +0000 | [diff] [blame] | 2207 | u_undoredo(TRUE); |
Bram Moolenaar | 071d427 | 2004-06-13 20:20:40 +0000 | [diff] [blame] | 2208 | } |
| 2209 | else |
| 2210 | { |
Bram Moolenaar | f5a2fd8 | 2013-11-06 05:26:15 +0100 | [diff] [blame] | 2211 | if (curbuf->b_u_curhead == NULL || get_undolevel() <= 0) |
Bram Moolenaar | 071d427 | 2004-06-13 20:20:40 +0000 | [diff] [blame] | 2212 | { |
| 2213 | beep_flush(); /* nothing to redo */ |
Bram Moolenaar | ca003e1 | 2006-03-17 23:19:38 +0000 | [diff] [blame] | 2214 | if (count == startcount - 1) |
| 2215 | { |
| 2216 | MSG(_("Already at newest change")); |
| 2217 | return; |
| 2218 | } |
Bram Moolenaar | 071d427 | 2004-06-13 20:20:40 +0000 | [diff] [blame] | 2219 | break; |
| 2220 | } |
| 2221 | |
Bram Moolenaar | ca003e1 | 2006-03-17 23:19:38 +0000 | [diff] [blame] | 2222 | u_undoredo(FALSE); |
Bram Moolenaar | 1e60789 | 2006-03-13 22:15:53 +0000 | [diff] [blame] | 2223 | |
| 2224 | /* Advance for next redo. Set "newhead" when at the end of the |
| 2225 | * redoable changes. */ |
Bram Moolenaar | 83d09bb | 2010-06-01 19:58:08 +0200 | [diff] [blame] | 2226 | if (curbuf->b_u_curhead->uh_prev.ptr == NULL) |
Bram Moolenaar | 1e60789 | 2006-03-13 22:15:53 +0000 | [diff] [blame] | 2227 | curbuf->b_u_newhead = curbuf->b_u_curhead; |
Bram Moolenaar | 83d09bb | 2010-06-01 19:58:08 +0200 | [diff] [blame] | 2228 | curbuf->b_u_curhead = curbuf->b_u_curhead->uh_prev.ptr; |
Bram Moolenaar | 071d427 | 2004-06-13 20:20:40 +0000 | [diff] [blame] | 2229 | } |
| 2230 | } |
Bram Moolenaar | db552d60 | 2006-03-23 22:59:57 +0000 | [diff] [blame] | 2231 | u_undo_end(undo_undoes, FALSE); |
Bram Moolenaar | 1e60789 | 2006-03-13 22:15:53 +0000 | [diff] [blame] | 2232 | } |
| 2233 | |
Bram Moolenaar | 1e60789 | 2006-03-13 22:15:53 +0000 | [diff] [blame] | 2234 | /* |
| 2235 | * Undo or redo over the timeline. |
| 2236 | * When "step" is negative go back in time, otherwise goes forward in time. |
Bram Moolenaar | 1f4d4de | 2006-03-14 23:00:46 +0000 | [diff] [blame] | 2237 | * When "sec" is FALSE make "step" steps, when "sec" is TRUE use "step" as |
| 2238 | * seconds. |
Bram Moolenaar | 730cde9 | 2010-06-27 05:18:54 +0200 | [diff] [blame] | 2239 | * When "file" is TRUE use "step" as a number of file writes. |
Bram Moolenaar | efd2bf1 | 2006-03-16 21:41:35 +0000 | [diff] [blame] | 2240 | * When "absolute" is TRUE use "step" as the sequence number to jump to. |
| 2241 | * "sec" must be FALSE then. |
Bram Moolenaar | 1e60789 | 2006-03-13 22:15:53 +0000 | [diff] [blame] | 2242 | */ |
| 2243 | void |
Bram Moolenaar | 764b23c | 2016-01-30 21:10:09 +0100 | [diff] [blame] | 2244 | undo_time( |
| 2245 | long step, |
| 2246 | int sec, |
| 2247 | int file, |
| 2248 | int absolute) |
Bram Moolenaar | 1e60789 | 2006-03-13 22:15:53 +0000 | [diff] [blame] | 2249 | { |
| 2250 | long target; |
| 2251 | long closest; |
Bram Moolenaar | 1f4d4de | 2006-03-14 23:00:46 +0000 | [diff] [blame] | 2252 | long closest_start; |
| 2253 | long closest_seq = 0; |
| 2254 | long val; |
Bram Moolenaar | ce46d93 | 2018-01-30 22:46:06 +0100 | [diff] [blame] | 2255 | u_header_T *uhp = NULL; |
Bram Moolenaar | 1e60789 | 2006-03-13 22:15:53 +0000 | [diff] [blame] | 2256 | u_header_T *last; |
| 2257 | int mark; |
| 2258 | int nomark; |
| 2259 | int round; |
Bram Moolenaar | 1f4d4de | 2006-03-14 23:00:46 +0000 | [diff] [blame] | 2260 | int dosec = sec; |
Bram Moolenaar | 730cde9 | 2010-06-27 05:18:54 +0200 | [diff] [blame] | 2261 | int dofile = file; |
Bram Moolenaar | 1f4d4de | 2006-03-14 23:00:46 +0000 | [diff] [blame] | 2262 | int above = FALSE; |
Bram Moolenaar | 433f7c8 | 2006-03-21 21:29:36 +0000 | [diff] [blame] | 2263 | int did_undo = TRUE; |
Bram Moolenaar | 1e60789 | 2006-03-13 22:15:53 +0000 | [diff] [blame] | 2264 | |
Bram Moolenaar | 7d47b6e | 2006-03-15 22:59:18 +0000 | [diff] [blame] | 2265 | /* First make sure the current undoable change is synced. */ |
| 2266 | if (curbuf->b_u_synced == FALSE) |
Bram Moolenaar | 779b74b | 2006-04-10 14:55:34 +0000 | [diff] [blame] | 2267 | u_sync(TRUE); |
Bram Moolenaar | 7d47b6e | 2006-03-15 22:59:18 +0000 | [diff] [blame] | 2268 | |
Bram Moolenaar | 1e60789 | 2006-03-13 22:15:53 +0000 | [diff] [blame] | 2269 | u_newcount = 0; |
| 2270 | u_oldcount = 0; |
Bram Moolenaar | 19a09a1 | 2005-03-04 23:39:37 +0000 | [diff] [blame] | 2271 | if (curbuf->b_ml.ml_flags & ML_EMPTY) |
Bram Moolenaar | 1e60789 | 2006-03-13 22:15:53 +0000 | [diff] [blame] | 2272 | u_oldcount = -1; |
| 2273 | |
Bram Moolenaar | ca003e1 | 2006-03-17 23:19:38 +0000 | [diff] [blame] | 2274 | /* "target" is the node below which we want to be. |
| 2275 | * Init "closest" to a value we can't reach. */ |
Bram Moolenaar | efd2bf1 | 2006-03-16 21:41:35 +0000 | [diff] [blame] | 2276 | if (absolute) |
| 2277 | { |
Bram Moolenaar | ce46d93 | 2018-01-30 22:46:06 +0100 | [diff] [blame] | 2278 | target = step; |
Bram Moolenaar | ca003e1 | 2006-03-17 23:19:38 +0000 | [diff] [blame] | 2279 | closest = -1; |
Bram Moolenaar | efd2bf1 | 2006-03-16 21:41:35 +0000 | [diff] [blame] | 2280 | } |
Bram Moolenaar | ca003e1 | 2006-03-17 23:19:38 +0000 | [diff] [blame] | 2281 | else |
Bram Moolenaar | 1e60789 | 2006-03-13 22:15:53 +0000 | [diff] [blame] | 2282 | { |
Bram Moolenaar | 730cde9 | 2010-06-27 05:18:54 +0200 | [diff] [blame] | 2283 | if (dosec) |
Bram Moolenaar | cbd4de4 | 2017-01-07 16:14:57 +0100 | [diff] [blame] | 2284 | target = (long)(curbuf->b_u_time_cur) + step; |
Bram Moolenaar | 730cde9 | 2010-06-27 05:18:54 +0200 | [diff] [blame] | 2285 | else if (dofile) |
| 2286 | { |
| 2287 | if (step < 0) |
| 2288 | { |
| 2289 | /* Going back to a previous write. If there were changes after |
| 2290 | * the last write, count that as moving one file-write, so |
| 2291 | * that ":earlier 1f" undoes all changes since the last save. */ |
| 2292 | uhp = curbuf->b_u_curhead; |
| 2293 | if (uhp != NULL) |
| 2294 | uhp = uhp->uh_next.ptr; |
| 2295 | else |
| 2296 | uhp = curbuf->b_u_newhead; |
| 2297 | if (uhp != NULL && uhp->uh_save_nr != 0) |
| 2298 | /* "uh_save_nr" was set in the last block, that means |
| 2299 | * there were no changes since the last write */ |
| 2300 | target = curbuf->b_u_save_nr_cur + step; |
| 2301 | else |
| 2302 | /* count the changes since the last write as one step */ |
| 2303 | target = curbuf->b_u_save_nr_cur + step + 1; |
| 2304 | if (target <= 0) |
| 2305 | /* Go to before first write: before the oldest change. Use |
| 2306 | * the sequence number for that. */ |
| 2307 | dofile = FALSE; |
| 2308 | } |
| 2309 | else |
| 2310 | { |
| 2311 | /* Moving forward to a newer write. */ |
| 2312 | target = curbuf->b_u_save_nr_cur + step; |
| 2313 | if (target > curbuf->b_u_save_nr_last) |
| 2314 | { |
| 2315 | /* Go to after last write: after the latest change. Use |
| 2316 | * the sequence number for that. */ |
| 2317 | target = curbuf->b_u_seq_last + 1; |
| 2318 | dofile = FALSE; |
| 2319 | } |
| 2320 | } |
| 2321 | } |
Bram Moolenaar | 1f4d4de | 2006-03-14 23:00:46 +0000 | [diff] [blame] | 2322 | else |
| 2323 | target = curbuf->b_u_seq_cur + step; |
Bram Moolenaar | ca003e1 | 2006-03-17 23:19:38 +0000 | [diff] [blame] | 2324 | if (step < 0) |
Bram Moolenaar | 1f4d4de | 2006-03-14 23:00:46 +0000 | [diff] [blame] | 2325 | { |
Bram Moolenaar | ca003e1 | 2006-03-17 23:19:38 +0000 | [diff] [blame] | 2326 | if (target < 0) |
| 2327 | target = 0; |
| 2328 | closest = -1; |
Bram Moolenaar | 1f4d4de | 2006-03-14 23:00:46 +0000 | [diff] [blame] | 2329 | } |
| 2330 | else |
| 2331 | { |
Bram Moolenaar | 730cde9 | 2010-06-27 05:18:54 +0200 | [diff] [blame] | 2332 | if (dosec) |
Bram Moolenaar | cbd4de4 | 2017-01-07 16:14:57 +0100 | [diff] [blame] | 2333 | closest = (long)(vim_time() + 1); |
Bram Moolenaar | 730cde9 | 2010-06-27 05:18:54 +0200 | [diff] [blame] | 2334 | else if (dofile) |
| 2335 | closest = curbuf->b_u_save_nr_last + 2; |
Bram Moolenaar | ca003e1 | 2006-03-17 23:19:38 +0000 | [diff] [blame] | 2336 | else |
| 2337 | closest = curbuf->b_u_seq_last + 2; |
| 2338 | if (target >= closest) |
| 2339 | target = closest - 1; |
Bram Moolenaar | 1f4d4de | 2006-03-14 23:00:46 +0000 | [diff] [blame] | 2340 | } |
Bram Moolenaar | 1e60789 | 2006-03-13 22:15:53 +0000 | [diff] [blame] | 2341 | } |
Bram Moolenaar | 1f4d4de | 2006-03-14 23:00:46 +0000 | [diff] [blame] | 2342 | closest_start = closest; |
Bram Moolenaar | ca003e1 | 2006-03-17 23:19:38 +0000 | [diff] [blame] | 2343 | closest_seq = curbuf->b_u_seq_cur; |
Bram Moolenaar | 1e60789 | 2006-03-13 22:15:53 +0000 | [diff] [blame] | 2344 | |
Bram Moolenaar | ce46d93 | 2018-01-30 22:46:06 +0100 | [diff] [blame] | 2345 | /* When "target" is 0; Back to origin. */ |
| 2346 | if (target == 0) |
Bram Moolenaar | 059fd01 | 2018-01-31 14:25:53 +0100 | [diff] [blame] | 2347 | { |
| 2348 | mark = lastmark; /* avoid that GCC complains */ |
| 2349 | goto target_zero; |
| 2350 | } |
Bram Moolenaar | ce46d93 | 2018-01-30 22:46:06 +0100 | [diff] [blame] | 2351 | |
Bram Moolenaar | 1f4d4de | 2006-03-14 23:00:46 +0000 | [diff] [blame] | 2352 | /* |
| 2353 | * May do this twice: |
Bram Moolenaar | 1e60789 | 2006-03-13 22:15:53 +0000 | [diff] [blame] | 2354 | * 1. Search for "target", update "closest" to the best match found. |
Bram Moolenaar | 1f4d4de | 2006-03-14 23:00:46 +0000 | [diff] [blame] | 2355 | * 2. If "target" not found search for "closest". |
| 2356 | * |
| 2357 | * When using the closest time we use the sequence number in the second |
| 2358 | * round, because there may be several entries with the same time. |
| 2359 | */ |
Bram Moolenaar | 1e60789 | 2006-03-13 22:15:53 +0000 | [diff] [blame] | 2360 | for (round = 1; round <= 2; ++round) |
| 2361 | { |
| 2362 | /* Find the path from the current state to where we want to go. The |
| 2363 | * desired state can be anywhere in the undo tree, need to go all over |
| 2364 | * it. We put "nomark" in uh_walk where we have been without success, |
| 2365 | * "mark" where it could possibly be. */ |
| 2366 | mark = ++lastmark; |
| 2367 | nomark = ++lastmark; |
| 2368 | |
| 2369 | if (curbuf->b_u_curhead == NULL) /* at leaf of the tree */ |
| 2370 | uhp = curbuf->b_u_newhead; |
| 2371 | else |
| 2372 | uhp = curbuf->b_u_curhead; |
| 2373 | |
| 2374 | while (uhp != NULL) |
| 2375 | { |
| 2376 | uhp->uh_walk = mark; |
Bram Moolenaar | 730cde9 | 2010-06-27 05:18:54 +0200 | [diff] [blame] | 2377 | if (dosec) |
Bram Moolenaar | cbd4de4 | 2017-01-07 16:14:57 +0100 | [diff] [blame] | 2378 | val = (long)(uhp->uh_time); |
Bram Moolenaar | 730cde9 | 2010-06-27 05:18:54 +0200 | [diff] [blame] | 2379 | else if (dofile) |
| 2380 | val = uhp->uh_save_nr; |
| 2381 | else |
| 2382 | val = uhp->uh_seq; |
Bram Moolenaar | 1e60789 | 2006-03-13 22:15:53 +0000 | [diff] [blame] | 2383 | |
Bram Moolenaar | 730cde9 | 2010-06-27 05:18:54 +0200 | [diff] [blame] | 2384 | if (round == 1 && !(dofile && val == 0)) |
Bram Moolenaar | 1f4d4de | 2006-03-14 23:00:46 +0000 | [diff] [blame] | 2385 | { |
| 2386 | /* Remember the header that is closest to the target. |
| 2387 | * It must be at least in the right direction (checked with |
Bram Moolenaar | ca003e1 | 2006-03-17 23:19:38 +0000 | [diff] [blame] | 2388 | * "b_u_seq_cur"). When the timestamp is equal find the |
Bram Moolenaar | 1f4d4de | 2006-03-14 23:00:46 +0000 | [diff] [blame] | 2389 | * highest/lowest sequence number. */ |
Bram Moolenaar | ca003e1 | 2006-03-17 23:19:38 +0000 | [diff] [blame] | 2390 | if ((step < 0 ? uhp->uh_seq <= curbuf->b_u_seq_cur |
| 2391 | : uhp->uh_seq > curbuf->b_u_seq_cur) |
| 2392 | && ((dosec && val == closest) |
| 2393 | ? (step < 0 |
| 2394 | ? uhp->uh_seq < closest_seq |
| 2395 | : uhp->uh_seq > closest_seq) |
| 2396 | : closest == closest_start |
| 2397 | || (val > target |
| 2398 | ? (closest > target |
| 2399 | ? val - target <= closest - target |
| 2400 | : val - target <= target - closest) |
| 2401 | : (closest > target |
| 2402 | ? target - val <= closest - target |
| 2403 | : target - val <= target - closest)))) |
Bram Moolenaar | 1f4d4de | 2006-03-14 23:00:46 +0000 | [diff] [blame] | 2404 | { |
| 2405 | closest = val; |
| 2406 | closest_seq = uhp->uh_seq; |
| 2407 | } |
| 2408 | } |
| 2409 | |
| 2410 | /* Quit searching when we found a match. But when searching for a |
| 2411 | * time we need to continue looking for the best uh_seq. */ |
| 2412 | if (target == val && !dosec) |
Bram Moolenaar | 730cde9 | 2010-06-27 05:18:54 +0200 | [diff] [blame] | 2413 | { |
| 2414 | target = uhp->uh_seq; |
Bram Moolenaar | 1f4d4de | 2006-03-14 23:00:46 +0000 | [diff] [blame] | 2415 | break; |
Bram Moolenaar | 730cde9 | 2010-06-27 05:18:54 +0200 | [diff] [blame] | 2416 | } |
Bram Moolenaar | 1e60789 | 2006-03-13 22:15:53 +0000 | [diff] [blame] | 2417 | |
| 2418 | /* go down in the tree if we haven't been there */ |
Bram Moolenaar | 83d09bb | 2010-06-01 19:58:08 +0200 | [diff] [blame] | 2419 | if (uhp->uh_prev.ptr != NULL && uhp->uh_prev.ptr->uh_walk != nomark |
| 2420 | && uhp->uh_prev.ptr->uh_walk != mark) |
| 2421 | uhp = uhp->uh_prev.ptr; |
Bram Moolenaar | 1e60789 | 2006-03-13 22:15:53 +0000 | [diff] [blame] | 2422 | |
| 2423 | /* go to alternate branch if we haven't been there */ |
Bram Moolenaar | 83d09bb | 2010-06-01 19:58:08 +0200 | [diff] [blame] | 2424 | else if (uhp->uh_alt_next.ptr != NULL |
| 2425 | && uhp->uh_alt_next.ptr->uh_walk != nomark |
| 2426 | && uhp->uh_alt_next.ptr->uh_walk != mark) |
| 2427 | uhp = uhp->uh_alt_next.ptr; |
Bram Moolenaar | 1e60789 | 2006-03-13 22:15:53 +0000 | [diff] [blame] | 2428 | |
| 2429 | /* go up in the tree if we haven't been there and we are at the |
| 2430 | * start of alternate branches */ |
Bram Moolenaar | 83d09bb | 2010-06-01 19:58:08 +0200 | [diff] [blame] | 2431 | else if (uhp->uh_next.ptr != NULL && uhp->uh_alt_prev.ptr == NULL |
| 2432 | && uhp->uh_next.ptr->uh_walk != nomark |
| 2433 | && uhp->uh_next.ptr->uh_walk != mark) |
Bram Moolenaar | db552d60 | 2006-03-23 22:59:57 +0000 | [diff] [blame] | 2434 | { |
| 2435 | /* If still at the start we don't go through this change. */ |
| 2436 | if (uhp == curbuf->b_u_curhead) |
| 2437 | uhp->uh_walk = nomark; |
Bram Moolenaar | 83d09bb | 2010-06-01 19:58:08 +0200 | [diff] [blame] | 2438 | uhp = uhp->uh_next.ptr; |
Bram Moolenaar | db552d60 | 2006-03-23 22:59:57 +0000 | [diff] [blame] | 2439 | } |
Bram Moolenaar | 1e60789 | 2006-03-13 22:15:53 +0000 | [diff] [blame] | 2440 | |
| 2441 | else |
| 2442 | { |
| 2443 | /* need to backtrack; mark this node as useless */ |
| 2444 | uhp->uh_walk = nomark; |
Bram Moolenaar | 83d09bb | 2010-06-01 19:58:08 +0200 | [diff] [blame] | 2445 | if (uhp->uh_alt_prev.ptr != NULL) |
| 2446 | uhp = uhp->uh_alt_prev.ptr; |
Bram Moolenaar | 1e60789 | 2006-03-13 22:15:53 +0000 | [diff] [blame] | 2447 | else |
Bram Moolenaar | 83d09bb | 2010-06-01 19:58:08 +0200 | [diff] [blame] | 2448 | uhp = uhp->uh_next.ptr; |
Bram Moolenaar | 1e60789 | 2006-03-13 22:15:53 +0000 | [diff] [blame] | 2449 | } |
| 2450 | } |
| 2451 | |
| 2452 | if (uhp != NULL) /* found it */ |
| 2453 | break; |
Bram Moolenaar | efd2bf1 | 2006-03-16 21:41:35 +0000 | [diff] [blame] | 2454 | |
| 2455 | if (absolute) |
| 2456 | { |
Bram Moolenaar | 55debbe | 2010-05-23 23:34:36 +0200 | [diff] [blame] | 2457 | EMSGN(_("E830: Undo number %ld not found"), step); |
Bram Moolenaar | efd2bf1 | 2006-03-16 21:41:35 +0000 | [diff] [blame] | 2458 | return; |
| 2459 | } |
| 2460 | |
Bram Moolenaar | 1f4d4de | 2006-03-14 23:00:46 +0000 | [diff] [blame] | 2461 | if (closest == closest_start) |
Bram Moolenaar | 1e60789 | 2006-03-13 22:15:53 +0000 | [diff] [blame] | 2462 | { |
Bram Moolenaar | 1f4d4de | 2006-03-14 23:00:46 +0000 | [diff] [blame] | 2463 | if (step < 0) |
| 2464 | MSG(_("Already at oldest change")); |
| 2465 | else |
| 2466 | MSG(_("Already at newest change")); |
Bram Moolenaar | 1e60789 | 2006-03-13 22:15:53 +0000 | [diff] [blame] | 2467 | return; |
| 2468 | } |
| 2469 | |
Bram Moolenaar | 1f4d4de | 2006-03-14 23:00:46 +0000 | [diff] [blame] | 2470 | target = closest_seq; |
| 2471 | dosec = FALSE; |
Bram Moolenaar | 730cde9 | 2010-06-27 05:18:54 +0200 | [diff] [blame] | 2472 | dofile = FALSE; |
Bram Moolenaar | 1f4d4de | 2006-03-14 23:00:46 +0000 | [diff] [blame] | 2473 | if (step < 0) |
| 2474 | above = TRUE; /* stop above the header */ |
Bram Moolenaar | 1e60789 | 2006-03-13 22:15:53 +0000 | [diff] [blame] | 2475 | } |
| 2476 | |
Bram Moolenaar | 059fd01 | 2018-01-31 14:25:53 +0100 | [diff] [blame] | 2477 | target_zero: |
Bram Moolenaar | 1e60789 | 2006-03-13 22:15:53 +0000 | [diff] [blame] | 2478 | /* If we found it: Follow the path to go to where we want to be. */ |
Bram Moolenaar | ce46d93 | 2018-01-30 22:46:06 +0100 | [diff] [blame] | 2479 | if (uhp != NULL || target == 0) |
Bram Moolenaar | 1e60789 | 2006-03-13 22:15:53 +0000 | [diff] [blame] | 2480 | { |
| 2481 | /* |
| 2482 | * First go up the tree as much as needed. |
| 2483 | */ |
Bram Moolenaar | b0b5088 | 2010-07-07 18:26:28 +0200 | [diff] [blame] | 2484 | while (!got_int) |
Bram Moolenaar | 1e60789 | 2006-03-13 22:15:53 +0000 | [diff] [blame] | 2485 | { |
Bram Moolenaar | b0b5088 | 2010-07-07 18:26:28 +0200 | [diff] [blame] | 2486 | /* Do the change warning now, for the same reason as above. */ |
| 2487 | change_warning(0); |
| 2488 | |
Bram Moolenaar | 1e60789 | 2006-03-13 22:15:53 +0000 | [diff] [blame] | 2489 | uhp = curbuf->b_u_curhead; |
| 2490 | if (uhp == NULL) |
| 2491 | uhp = curbuf->b_u_newhead; |
| 2492 | else |
Bram Moolenaar | 83d09bb | 2010-06-01 19:58:08 +0200 | [diff] [blame] | 2493 | uhp = uhp->uh_next.ptr; |
Bram Moolenaar | ce46d93 | 2018-01-30 22:46:06 +0100 | [diff] [blame] | 2494 | if (uhp == NULL || (target > 0 && uhp->uh_walk != mark) |
Bram Moolenaar | ca003e1 | 2006-03-17 23:19:38 +0000 | [diff] [blame] | 2495 | || (uhp->uh_seq == target && !above)) |
Bram Moolenaar | 1e60789 | 2006-03-13 22:15:53 +0000 | [diff] [blame] | 2496 | break; |
| 2497 | curbuf->b_u_curhead = uhp; |
Bram Moolenaar | ca003e1 | 2006-03-17 23:19:38 +0000 | [diff] [blame] | 2498 | u_undoredo(TRUE); |
Bram Moolenaar | ce46d93 | 2018-01-30 22:46:06 +0100 | [diff] [blame] | 2499 | if (target > 0) |
| 2500 | uhp->uh_walk = nomark; /* don't go back down here */ |
Bram Moolenaar | 1e60789 | 2006-03-13 22:15:53 +0000 | [diff] [blame] | 2501 | } |
| 2502 | |
Bram Moolenaar | ce46d93 | 2018-01-30 22:46:06 +0100 | [diff] [blame] | 2503 | /* When back to origin, redo is not needed. */ |
| 2504 | if (target > 0) |
Bram Moolenaar | 1e60789 | 2006-03-13 22:15:53 +0000 | [diff] [blame] | 2505 | { |
Bram Moolenaar | ce46d93 | 2018-01-30 22:46:06 +0100 | [diff] [blame] | 2506 | /* |
| 2507 | * And now go down the tree (redo), branching off where needed. |
| 2508 | */ |
| 2509 | while (!got_int) |
| 2510 | { |
| 2511 | /* Do the change warning now, for the same reason as above. */ |
| 2512 | change_warning(0); |
Bram Moolenaar | b0b5088 | 2010-07-07 18:26:28 +0200 | [diff] [blame] | 2513 | |
Bram Moolenaar | ce46d93 | 2018-01-30 22:46:06 +0100 | [diff] [blame] | 2514 | uhp = curbuf->b_u_curhead; |
| 2515 | if (uhp == NULL) |
| 2516 | break; |
Bram Moolenaar | b0b5088 | 2010-07-07 18:26:28 +0200 | [diff] [blame] | 2517 | |
Bram Moolenaar | ce46d93 | 2018-01-30 22:46:06 +0100 | [diff] [blame] | 2518 | /* Go back to the first branch with a mark. */ |
| 2519 | while (uhp->uh_alt_prev.ptr != NULL |
Bram Moolenaar | 83d09bb | 2010-06-01 19:58:08 +0200 | [diff] [blame] | 2520 | && uhp->uh_alt_prev.ptr->uh_walk == mark) |
Bram Moolenaar | 83d09bb | 2010-06-01 19:58:08 +0200 | [diff] [blame] | 2521 | uhp = uhp->uh_alt_prev.ptr; |
Bram Moolenaar | ce46d93 | 2018-01-30 22:46:06 +0100 | [diff] [blame] | 2522 | |
| 2523 | /* Find the last branch with a mark, that's the one. */ |
| 2524 | last = uhp; |
| 2525 | while (last->uh_alt_next.ptr != NULL |
| 2526 | && last->uh_alt_next.ptr->uh_walk == mark) |
| 2527 | last = last->uh_alt_next.ptr; |
| 2528 | if (last != uhp) |
| 2529 | { |
| 2530 | /* Make the used branch the first entry in the list of |
| 2531 | * alternatives to make "u" and CTRL-R take this branch. */ |
| 2532 | while (uhp->uh_alt_prev.ptr != NULL) |
| 2533 | uhp = uhp->uh_alt_prev.ptr; |
| 2534 | if (last->uh_alt_next.ptr != NULL) |
| 2535 | last->uh_alt_next.ptr->uh_alt_prev.ptr = |
Bram Moolenaar | 83d09bb | 2010-06-01 19:58:08 +0200 | [diff] [blame] | 2536 | last->uh_alt_prev.ptr; |
Bram Moolenaar | ce46d93 | 2018-01-30 22:46:06 +0100 | [diff] [blame] | 2537 | last->uh_alt_prev.ptr->uh_alt_next.ptr = |
| 2538 | last->uh_alt_next.ptr; |
| 2539 | last->uh_alt_prev.ptr = NULL; |
| 2540 | last->uh_alt_next.ptr = uhp; |
| 2541 | uhp->uh_alt_prev.ptr = last; |
Bram Moolenaar | 1e60789 | 2006-03-13 22:15:53 +0000 | [diff] [blame] | 2542 | |
Bram Moolenaar | ce46d93 | 2018-01-30 22:46:06 +0100 | [diff] [blame] | 2543 | if (curbuf->b_u_oldhead == uhp) |
| 2544 | curbuf->b_u_oldhead = last; |
| 2545 | uhp = last; |
| 2546 | if (uhp->uh_next.ptr != NULL) |
| 2547 | uhp->uh_next.ptr->uh_prev.ptr = uhp; |
| 2548 | } |
| 2549 | curbuf->b_u_curhead = uhp; |
Bram Moolenaar | 1e60789 | 2006-03-13 22:15:53 +0000 | [diff] [blame] | 2550 | |
Bram Moolenaar | ce46d93 | 2018-01-30 22:46:06 +0100 | [diff] [blame] | 2551 | if (uhp->uh_walk != mark) |
| 2552 | break; /* must have reached the target */ |
Bram Moolenaar | 1e60789 | 2006-03-13 22:15:53 +0000 | [diff] [blame] | 2553 | |
Bram Moolenaar | ce46d93 | 2018-01-30 22:46:06 +0100 | [diff] [blame] | 2554 | /* Stop when going backwards in time and didn't find the exact |
| 2555 | * header we were looking for. */ |
| 2556 | if (uhp->uh_seq == target && above) |
| 2557 | { |
| 2558 | curbuf->b_u_seq_cur = target - 1; |
| 2559 | break; |
| 2560 | } |
Bram Moolenaar | 1f4d4de | 2006-03-14 23:00:46 +0000 | [diff] [blame] | 2561 | |
Bram Moolenaar | ce46d93 | 2018-01-30 22:46:06 +0100 | [diff] [blame] | 2562 | u_undoredo(FALSE); |
Bram Moolenaar | 1e60789 | 2006-03-13 22:15:53 +0000 | [diff] [blame] | 2563 | |
Bram Moolenaar | ce46d93 | 2018-01-30 22:46:06 +0100 | [diff] [blame] | 2564 | /* Advance "curhead" to below the header we last used. If it |
| 2565 | * becomes NULL then we need to set "newhead" to this leaf. */ |
| 2566 | if (uhp->uh_prev.ptr == NULL) |
| 2567 | curbuf->b_u_newhead = uhp; |
| 2568 | curbuf->b_u_curhead = uhp->uh_prev.ptr; |
| 2569 | did_undo = FALSE; |
Bram Moolenaar | 1e60789 | 2006-03-13 22:15:53 +0000 | [diff] [blame] | 2570 | |
Bram Moolenaar | ce46d93 | 2018-01-30 22:46:06 +0100 | [diff] [blame] | 2571 | if (uhp->uh_seq == target) /* found it! */ |
| 2572 | break; |
Bram Moolenaar | 1e60789 | 2006-03-13 22:15:53 +0000 | [diff] [blame] | 2573 | |
Bram Moolenaar | ce46d93 | 2018-01-30 22:46:06 +0100 | [diff] [blame] | 2574 | uhp = uhp->uh_prev.ptr; |
| 2575 | if (uhp == NULL || uhp->uh_walk != mark) |
| 2576 | { |
| 2577 | /* Need to redo more but can't find it... */ |
| 2578 | internal_error("undo_time()"); |
| 2579 | break; |
| 2580 | } |
Bram Moolenaar | 1e60789 | 2006-03-13 22:15:53 +0000 | [diff] [blame] | 2581 | } |
| 2582 | } |
| 2583 | } |
Bram Moolenaar | db552d60 | 2006-03-23 22:59:57 +0000 | [diff] [blame] | 2584 | u_undo_end(did_undo, absolute); |
Bram Moolenaar | 071d427 | 2004-06-13 20:20:40 +0000 | [diff] [blame] | 2585 | } |
| 2586 | |
| 2587 | /* |
| 2588 | * u_undoredo: common code for undo and redo |
| 2589 | * |
| 2590 | * The lines in the file are replaced by the lines in the entry list at |
| 2591 | * curbuf->b_u_curhead. The replaced lines in the file are saved in the entry |
| 2592 | * list for the next undo/redo. |
Bram Moolenaar | ca003e1 | 2006-03-17 23:19:38 +0000 | [diff] [blame] | 2593 | * |
| 2594 | * When "undo" is TRUE we go up in the tree, when FALSE we go down. |
Bram Moolenaar | 071d427 | 2004-06-13 20:20:40 +0000 | [diff] [blame] | 2595 | */ |
| 2596 | static void |
Bram Moolenaar | 764b23c | 2016-01-30 21:10:09 +0100 | [diff] [blame] | 2597 | u_undoredo(int undo) |
Bram Moolenaar | 071d427 | 2004-06-13 20:20:40 +0000 | [diff] [blame] | 2598 | { |
| 2599 | char_u **newarray = NULL; |
| 2600 | linenr_T oldsize; |
| 2601 | linenr_T newsize; |
| 2602 | linenr_T top, bot; |
| 2603 | linenr_T lnum; |
| 2604 | linenr_T newlnum = MAXLNUM; |
| 2605 | long i; |
| 2606 | u_entry_T *uep, *nuep; |
| 2607 | u_entry_T *newlist = NULL; |
| 2608 | int old_flags; |
| 2609 | int new_flags; |
| 2610 | pos_T namedm[NMARKS]; |
Bram Moolenaar | a23ccb8 | 2006-02-27 00:08:02 +0000 | [diff] [blame] | 2611 | visualinfo_T visualinfo; |
Bram Moolenaar | 071d427 | 2004-06-13 20:20:40 +0000 | [diff] [blame] | 2612 | int empty_buffer; /* buffer became empty */ |
Bram Moolenaar | 1f4d4de | 2006-03-14 23:00:46 +0000 | [diff] [blame] | 2613 | u_header_T *curhead = curbuf->b_u_curhead; |
Bram Moolenaar | 071d427 | 2004-06-13 20:20:40 +0000 | [diff] [blame] | 2614 | |
Bram Moolenaar | b0b5088 | 2010-07-07 18:26:28 +0200 | [diff] [blame] | 2615 | /* Don't want autocommands using the undo structures here, they are |
| 2616 | * invalid till the end. */ |
| 2617 | block_autocmds(); |
Bram Moolenaar | b0b5088 | 2010-07-07 18:26:28 +0200 | [diff] [blame] | 2618 | |
Bram Moolenaar | fecb660 | 2007-10-01 20:54:15 +0000 | [diff] [blame] | 2619 | #ifdef U_DEBUG |
| 2620 | u_check(FALSE); |
| 2621 | #endif |
Bram Moolenaar | 1f4d4de | 2006-03-14 23:00:46 +0000 | [diff] [blame] | 2622 | old_flags = curhead->uh_flags; |
Bram Moolenaar | 071d427 | 2004-06-13 20:20:40 +0000 | [diff] [blame] | 2623 | new_flags = (curbuf->b_changed ? UH_CHANGED : 0) + |
| 2624 | ((curbuf->b_ml.ml_flags & ML_EMPTY) ? UH_EMPTYBUF : 0); |
| 2625 | setpcmark(); |
| 2626 | |
| 2627 | /* |
| 2628 | * save marks before undo/redo |
| 2629 | */ |
| 2630 | mch_memmove(namedm, curbuf->b_namedm, sizeof(pos_T) * NMARKS); |
Bram Moolenaar | a23ccb8 | 2006-02-27 00:08:02 +0000 | [diff] [blame] | 2631 | visualinfo = curbuf->b_visual; |
Bram Moolenaar | 071d427 | 2004-06-13 20:20:40 +0000 | [diff] [blame] | 2632 | curbuf->b_op_start.lnum = curbuf->b_ml.ml_line_count; |
| 2633 | curbuf->b_op_start.col = 0; |
| 2634 | curbuf->b_op_end.lnum = 0; |
| 2635 | curbuf->b_op_end.col = 0; |
| 2636 | |
Bram Moolenaar | 1f4d4de | 2006-03-14 23:00:46 +0000 | [diff] [blame] | 2637 | for (uep = curhead->uh_entry; uep != NULL; uep = nuep) |
Bram Moolenaar | 071d427 | 2004-06-13 20:20:40 +0000 | [diff] [blame] | 2638 | { |
| 2639 | top = uep->ue_top; |
| 2640 | bot = uep->ue_bot; |
| 2641 | if (bot == 0) |
| 2642 | bot = curbuf->b_ml.ml_line_count + 1; |
| 2643 | if (top > curbuf->b_ml.ml_line_count || top >= bot |
| 2644 | || bot > curbuf->b_ml.ml_line_count + 1) |
| 2645 | { |
Bram Moolenaar | b0b5088 | 2010-07-07 18:26:28 +0200 | [diff] [blame] | 2646 | unblock_autocmds(); |
Bram Moolenaar | 95f0960 | 2016-11-10 20:01:45 +0100 | [diff] [blame] | 2647 | IEMSG(_("E438: u_undo: line numbers wrong")); |
Bram Moolenaar | 071d427 | 2004-06-13 20:20:40 +0000 | [diff] [blame] | 2648 | changed(); /* don't want UNCHANGED now */ |
| 2649 | return; |
| 2650 | } |
| 2651 | |
| 2652 | oldsize = bot - top - 1; /* number of lines before undo */ |
| 2653 | newsize = uep->ue_size; /* number of lines after undo */ |
| 2654 | |
| 2655 | if (top < newlnum) |
| 2656 | { |
| 2657 | /* If the saved cursor is somewhere in this undo block, move it to |
| 2658 | * the remembered position. Makes "gwap" put the cursor back |
| 2659 | * where it was. */ |
Bram Moolenaar | 1f4d4de | 2006-03-14 23:00:46 +0000 | [diff] [blame] | 2660 | lnum = curhead->uh_cursor.lnum; |
Bram Moolenaar | 071d427 | 2004-06-13 20:20:40 +0000 | [diff] [blame] | 2661 | if (lnum >= top && lnum <= top + newsize + 1) |
| 2662 | { |
Bram Moolenaar | 1f4d4de | 2006-03-14 23:00:46 +0000 | [diff] [blame] | 2663 | curwin->w_cursor = curhead->uh_cursor; |
Bram Moolenaar | 071d427 | 2004-06-13 20:20:40 +0000 | [diff] [blame] | 2664 | newlnum = curwin->w_cursor.lnum - 1; |
| 2665 | } |
| 2666 | else |
| 2667 | { |
| 2668 | /* Use the first line that actually changed. Avoids that |
| 2669 | * undoing auto-formatting puts the cursor in the previous |
| 2670 | * line. */ |
| 2671 | for (i = 0; i < newsize && i < oldsize; ++i) |
| 2672 | if (STRCMP(uep->ue_array[i], ml_get(top + 1 + i)) != 0) |
| 2673 | break; |
| 2674 | if (i == newsize && newlnum == MAXLNUM && uep->ue_next == NULL) |
| 2675 | { |
| 2676 | newlnum = top; |
| 2677 | curwin->w_cursor.lnum = newlnum + 1; |
| 2678 | } |
| 2679 | else if (i < newsize) |
| 2680 | { |
| 2681 | newlnum = top + i; |
| 2682 | curwin->w_cursor.lnum = newlnum + 1; |
| 2683 | } |
| 2684 | } |
| 2685 | } |
| 2686 | |
| 2687 | empty_buffer = FALSE; |
| 2688 | |
| 2689 | /* delete the lines between top and bot and save them in newarray */ |
Bram Moolenaar | 26a60b4 | 2005-02-22 08:49:11 +0000 | [diff] [blame] | 2690 | if (oldsize > 0) |
Bram Moolenaar | 071d427 | 2004-06-13 20:20:40 +0000 | [diff] [blame] | 2691 | { |
Bram Moolenaar | 26a60b4 | 2005-02-22 08:49:11 +0000 | [diff] [blame] | 2692 | if ((newarray = (char_u **)U_ALLOC_LINE( |
Bram Moolenaar | f05e3b0 | 2010-05-29 15:40:47 +0200 | [diff] [blame] | 2693 | sizeof(char_u *) * oldsize)) == NULL) |
Bram Moolenaar | 071d427 | 2004-06-13 20:20:40 +0000 | [diff] [blame] | 2694 | { |
| 2695 | do_outofmem_msg((long_u)(sizeof(char_u *) * oldsize)); |
| 2696 | /* |
| 2697 | * We have messed up the entry list, repair is impossible. |
| 2698 | * we have to free the rest of the list. |
| 2699 | */ |
| 2700 | while (uep != NULL) |
| 2701 | { |
| 2702 | nuep = uep->ue_next; |
| 2703 | u_freeentry(uep, uep->ue_size); |
| 2704 | uep = nuep; |
| 2705 | } |
| 2706 | break; |
| 2707 | } |
| 2708 | /* delete backwards, it goes faster in most cases */ |
| 2709 | for (lnum = bot - 1, i = oldsize; --i >= 0; --lnum) |
| 2710 | { |
| 2711 | /* what can we do when we run out of memory? */ |
| 2712 | if ((newarray[i] = u_save_line(lnum)) == NULL) |
| 2713 | do_outofmem_msg((long_u)0); |
| 2714 | /* remember we deleted the last line in the buffer, and a |
| 2715 | * dummy empty line will be inserted */ |
| 2716 | if (curbuf->b_ml.ml_line_count == 1) |
| 2717 | empty_buffer = TRUE; |
| 2718 | ml_delete(lnum, FALSE); |
| 2719 | } |
| 2720 | } |
Bram Moolenaar | 8d34330 | 2005-07-12 22:46:17 +0000 | [diff] [blame] | 2721 | else |
| 2722 | newarray = NULL; |
Bram Moolenaar | 071d427 | 2004-06-13 20:20:40 +0000 | [diff] [blame] | 2723 | |
| 2724 | /* insert the lines in u_array between top and bot */ |
| 2725 | if (newsize) |
| 2726 | { |
| 2727 | for (lnum = top, i = 0; i < newsize; ++i, ++lnum) |
| 2728 | { |
| 2729 | /* |
| 2730 | * If the file is empty, there is an empty line 1 that we |
| 2731 | * should get rid of, by replacing it with the new line |
| 2732 | */ |
| 2733 | if (empty_buffer && lnum == 0) |
| 2734 | ml_replace((linenr_T)1, uep->ue_array[i], TRUE); |
| 2735 | else |
| 2736 | ml_append(lnum, uep->ue_array[i], (colnr_T)0, FALSE); |
Bram Moolenaar | f05e3b0 | 2010-05-29 15:40:47 +0200 | [diff] [blame] | 2737 | vim_free(uep->ue_array[i]); |
Bram Moolenaar | 071d427 | 2004-06-13 20:20:40 +0000 | [diff] [blame] | 2738 | } |
Bram Moolenaar | f05e3b0 | 2010-05-29 15:40:47 +0200 | [diff] [blame] | 2739 | vim_free((char_u *)uep->ue_array); |
Bram Moolenaar | 071d427 | 2004-06-13 20:20:40 +0000 | [diff] [blame] | 2740 | } |
| 2741 | |
| 2742 | /* adjust marks */ |
| 2743 | if (oldsize != newsize) |
| 2744 | { |
| 2745 | mark_adjust(top + 1, top + oldsize, (long)MAXLNUM, |
| 2746 | (long)newsize - (long)oldsize); |
| 2747 | if (curbuf->b_op_start.lnum > top + oldsize) |
| 2748 | curbuf->b_op_start.lnum += newsize - oldsize; |
| 2749 | if (curbuf->b_op_end.lnum > top + oldsize) |
| 2750 | curbuf->b_op_end.lnum += newsize - oldsize; |
| 2751 | } |
| 2752 | |
| 2753 | changed_lines(top + 1, 0, bot, newsize - oldsize); |
| 2754 | |
| 2755 | /* set '[ and '] mark */ |
| 2756 | if (top + 1 < curbuf->b_op_start.lnum) |
| 2757 | curbuf->b_op_start.lnum = top + 1; |
| 2758 | if (newsize == 0 && top + 1 > curbuf->b_op_end.lnum) |
| 2759 | curbuf->b_op_end.lnum = top + 1; |
| 2760 | else if (top + newsize > curbuf->b_op_end.lnum) |
| 2761 | curbuf->b_op_end.lnum = top + newsize; |
| 2762 | |
| 2763 | u_newcount += newsize; |
| 2764 | u_oldcount += oldsize; |
| 2765 | uep->ue_size = oldsize; |
| 2766 | uep->ue_array = newarray; |
| 2767 | uep->ue_bot = top + newsize + 1; |
| 2768 | |
| 2769 | /* |
| 2770 | * insert this entry in front of the new entry list |
| 2771 | */ |
| 2772 | nuep = uep->ue_next; |
| 2773 | uep->ue_next = newlist; |
| 2774 | newlist = uep; |
| 2775 | } |
| 2776 | |
Bram Moolenaar | 1f4d4de | 2006-03-14 23:00:46 +0000 | [diff] [blame] | 2777 | curhead->uh_entry = newlist; |
| 2778 | curhead->uh_flags = new_flags; |
Bram Moolenaar | b5aedf3 | 2017-03-12 18:23:53 +0100 | [diff] [blame] | 2779 | if ((old_flags & UH_EMPTYBUF) && BUFEMPTY()) |
Bram Moolenaar | 071d427 | 2004-06-13 20:20:40 +0000 | [diff] [blame] | 2780 | curbuf->b_ml.ml_flags |= ML_EMPTY; |
| 2781 | if (old_flags & UH_CHANGED) |
| 2782 | changed(); |
| 2783 | else |
Bram Moolenaar | 009b259 | 2004-10-24 19:18:58 +0000 | [diff] [blame] | 2784 | #ifdef FEAT_NETBEANS_INTG |
| 2785 | /* per netbeans undo rules, keep it as modified */ |
| 2786 | if (!isNetbeansModified(curbuf)) |
| 2787 | #endif |
Bram Moolenaar | 071d427 | 2004-06-13 20:20:40 +0000 | [diff] [blame] | 2788 | unchanged(curbuf, FALSE); |
| 2789 | |
| 2790 | /* |
| 2791 | * restore marks from before undo/redo |
| 2792 | */ |
| 2793 | for (i = 0; i < NMARKS; ++i) |
Bram Moolenaar | f65aad5 | 2015-02-17 13:43:40 +0100 | [diff] [blame] | 2794 | { |
Bram Moolenaar | 1f4d4de | 2006-03-14 23:00:46 +0000 | [diff] [blame] | 2795 | if (curhead->uh_namedm[i].lnum != 0) |
Bram Moolenaar | 1f4d4de | 2006-03-14 23:00:46 +0000 | [diff] [blame] | 2796 | curbuf->b_namedm[i] = curhead->uh_namedm[i]; |
Bram Moolenaar | f65aad5 | 2015-02-17 13:43:40 +0100 | [diff] [blame] | 2797 | if (namedm[i].lnum != 0) |
Bram Moolenaar | 1f4d4de | 2006-03-14 23:00:46 +0000 | [diff] [blame] | 2798 | curhead->uh_namedm[i] = namedm[i]; |
Bram Moolenaar | f65aad5 | 2015-02-17 13:43:40 +0100 | [diff] [blame] | 2799 | else |
| 2800 | curhead->uh_namedm[i].lnum = 0; |
| 2801 | } |
Bram Moolenaar | 1f4d4de | 2006-03-14 23:00:46 +0000 | [diff] [blame] | 2802 | if (curhead->uh_visual.vi_start.lnum != 0) |
Bram Moolenaar | a23ccb8 | 2006-02-27 00:08:02 +0000 | [diff] [blame] | 2803 | { |
Bram Moolenaar | 1f4d4de | 2006-03-14 23:00:46 +0000 | [diff] [blame] | 2804 | curbuf->b_visual = curhead->uh_visual; |
| 2805 | curhead->uh_visual = visualinfo; |
Bram Moolenaar | a23ccb8 | 2006-02-27 00:08:02 +0000 | [diff] [blame] | 2806 | } |
Bram Moolenaar | 071d427 | 2004-06-13 20:20:40 +0000 | [diff] [blame] | 2807 | |
| 2808 | /* |
| 2809 | * If the cursor is only off by one line, put it at the same position as |
| 2810 | * before starting the change (for the "o" command). |
| 2811 | * Otherwise the cursor should go to the first undone line. |
| 2812 | */ |
Bram Moolenaar | 1f4d4de | 2006-03-14 23:00:46 +0000 | [diff] [blame] | 2813 | if (curhead->uh_cursor.lnum + 1 == curwin->w_cursor.lnum |
Bram Moolenaar | 071d427 | 2004-06-13 20:20:40 +0000 | [diff] [blame] | 2814 | && curwin->w_cursor.lnum > 1) |
| 2815 | --curwin->w_cursor.lnum; |
Bram Moolenaar | 0390ded | 2010-08-07 12:54:12 +0200 | [diff] [blame] | 2816 | if (curwin->w_cursor.lnum <= curbuf->b_ml.ml_line_count) |
Bram Moolenaar | 071d427 | 2004-06-13 20:20:40 +0000 | [diff] [blame] | 2817 | { |
Bram Moolenaar | 0390ded | 2010-08-07 12:54:12 +0200 | [diff] [blame] | 2818 | if (curhead->uh_cursor.lnum == curwin->w_cursor.lnum) |
| 2819 | { |
| 2820 | curwin->w_cursor.col = curhead->uh_cursor.col; |
Bram Moolenaar | 071d427 | 2004-06-13 20:20:40 +0000 | [diff] [blame] | 2821 | #ifdef FEAT_VIRTUALEDIT |
Bram Moolenaar | 0390ded | 2010-08-07 12:54:12 +0200 | [diff] [blame] | 2822 | if (virtual_active() && curhead->uh_cursor_vcol >= 0) |
| 2823 | coladvance((colnr_T)curhead->uh_cursor_vcol); |
| 2824 | else |
| 2825 | curwin->w_cursor.coladd = 0; |
Bram Moolenaar | 071d427 | 2004-06-13 20:20:40 +0000 | [diff] [blame] | 2826 | #endif |
Bram Moolenaar | 0390ded | 2010-08-07 12:54:12 +0200 | [diff] [blame] | 2827 | } |
| 2828 | else |
| 2829 | beginline(BL_SOL | BL_FIX); |
Bram Moolenaar | 071d427 | 2004-06-13 20:20:40 +0000 | [diff] [blame] | 2830 | } |
Bram Moolenaar | 071d427 | 2004-06-13 20:20:40 +0000 | [diff] [blame] | 2831 | else |
| 2832 | { |
| 2833 | /* We get here with the current cursor line being past the end (eg |
| 2834 | * after adding lines at the end of the file, and then undoing it). |
| 2835 | * check_cursor() will move the cursor to the last line. Move it to |
| 2836 | * the first column here. */ |
| 2837 | curwin->w_cursor.col = 0; |
| 2838 | #ifdef FEAT_VIRTUALEDIT |
| 2839 | curwin->w_cursor.coladd = 0; |
| 2840 | #endif |
| 2841 | } |
| 2842 | |
| 2843 | /* Make sure the cursor is on an existing line and column. */ |
| 2844 | check_cursor(); |
Bram Moolenaar | 1f4d4de | 2006-03-14 23:00:46 +0000 | [diff] [blame] | 2845 | |
| 2846 | /* Remember where we are for "g-" and ":earlier 10s". */ |
| 2847 | curbuf->b_u_seq_cur = curhead->uh_seq; |
Bram Moolenaar | ca003e1 | 2006-03-17 23:19:38 +0000 | [diff] [blame] | 2848 | if (undo) |
Bram Moolenaar | 80eaddd | 2017-11-11 23:37:08 +0100 | [diff] [blame] | 2849 | { |
Bram Moolenaar | ca003e1 | 2006-03-17 23:19:38 +0000 | [diff] [blame] | 2850 | /* We are below the previous undo. However, to make ":earlier 1s" |
| 2851 | * work we compute this as being just above the just undone change. */ |
Bram Moolenaar | 80eaddd | 2017-11-11 23:37:08 +0100 | [diff] [blame] | 2852 | if (curhead->uh_next.ptr != NULL) |
| 2853 | curbuf->b_u_seq_cur = curhead->uh_next.ptr->uh_seq; |
| 2854 | else |
| 2855 | curbuf->b_u_seq_cur = 0; |
| 2856 | } |
Bram Moolenaar | ca003e1 | 2006-03-17 23:19:38 +0000 | [diff] [blame] | 2857 | |
Bram Moolenaar | 730cde9 | 2010-06-27 05:18:54 +0200 | [diff] [blame] | 2858 | /* Remember where we are for ":earlier 1f" and ":later 1f". */ |
| 2859 | if (curhead->uh_save_nr != 0) |
| 2860 | { |
| 2861 | if (undo) |
| 2862 | curbuf->b_u_save_nr_cur = curhead->uh_save_nr - 1; |
| 2863 | else |
| 2864 | curbuf->b_u_save_nr_cur = curhead->uh_save_nr; |
| 2865 | } |
| 2866 | |
Bram Moolenaar | ca003e1 | 2006-03-17 23:19:38 +0000 | [diff] [blame] | 2867 | /* The timestamp can be the same for multiple changes, just use the one of |
| 2868 | * the undone/redone change. */ |
Bram Moolenaar | a800b42 | 2010-06-27 01:15:55 +0200 | [diff] [blame] | 2869 | curbuf->b_u_time_cur = curhead->uh_time; |
Bram Moolenaar | b0b5088 | 2010-07-07 18:26:28 +0200 | [diff] [blame] | 2870 | |
Bram Moolenaar | b0b5088 | 2010-07-07 18:26:28 +0200 | [diff] [blame] | 2871 | unblock_autocmds(); |
Bram Moolenaar | fecb660 | 2007-10-01 20:54:15 +0000 | [diff] [blame] | 2872 | #ifdef U_DEBUG |
| 2873 | u_check(FALSE); |
| 2874 | #endif |
Bram Moolenaar | 071d427 | 2004-06-13 20:20:40 +0000 | [diff] [blame] | 2875 | } |
| 2876 | |
| 2877 | /* |
| 2878 | * If we deleted or added lines, report the number of less/more lines. |
| 2879 | * Otherwise, report the number of changes (this may be incorrect |
| 2880 | * in some cases, but it's better than nothing). |
| 2881 | */ |
| 2882 | static void |
Bram Moolenaar | 764b23c | 2016-01-30 21:10:09 +0100 | [diff] [blame] | 2883 | u_undo_end( |
| 2884 | int did_undo, /* just did an undo */ |
| 2885 | int absolute) /* used ":undo N" */ |
Bram Moolenaar | 071d427 | 2004-06-13 20:20:40 +0000 | [diff] [blame] | 2886 | { |
Bram Moolenaar | 89d4032 | 2006-08-29 15:30:07 +0000 | [diff] [blame] | 2887 | char *msgstr; |
Bram Moolenaar | efd2bf1 | 2006-03-16 21:41:35 +0000 | [diff] [blame] | 2888 | u_header_T *uhp; |
| 2889 | char_u msgbuf[80]; |
Bram Moolenaar | 1e60789 | 2006-03-13 22:15:53 +0000 | [diff] [blame] | 2890 | |
Bram Moolenaar | 071d427 | 2004-06-13 20:20:40 +0000 | [diff] [blame] | 2891 | #ifdef FEAT_FOLDING |
| 2892 | if ((fdo_flags & FDO_UNDO) && KeyTyped) |
| 2893 | foldOpenCursor(); |
| 2894 | #endif |
Bram Moolenaar | 1e60789 | 2006-03-13 22:15:53 +0000 | [diff] [blame] | 2895 | |
| 2896 | if (global_busy /* no messages now, wait until global is finished */ |
| 2897 | || !messaging()) /* 'lazyredraw' set, don't do messages now */ |
| 2898 | return; |
| 2899 | |
| 2900 | if (curbuf->b_ml.ml_flags & ML_EMPTY) |
| 2901 | --u_newcount; |
| 2902 | |
| 2903 | u_oldcount -= u_newcount; |
| 2904 | if (u_oldcount == -1) |
Bram Moolenaar | 89d4032 | 2006-08-29 15:30:07 +0000 | [diff] [blame] | 2905 | msgstr = N_("more line"); |
Bram Moolenaar | 1e60789 | 2006-03-13 22:15:53 +0000 | [diff] [blame] | 2906 | else if (u_oldcount < 0) |
Bram Moolenaar | 89d4032 | 2006-08-29 15:30:07 +0000 | [diff] [blame] | 2907 | msgstr = N_("more lines"); |
Bram Moolenaar | 1e60789 | 2006-03-13 22:15:53 +0000 | [diff] [blame] | 2908 | else if (u_oldcount == 1) |
Bram Moolenaar | 89d4032 | 2006-08-29 15:30:07 +0000 | [diff] [blame] | 2909 | msgstr = N_("line less"); |
Bram Moolenaar | 1e60789 | 2006-03-13 22:15:53 +0000 | [diff] [blame] | 2910 | else if (u_oldcount > 1) |
Bram Moolenaar | 89d4032 | 2006-08-29 15:30:07 +0000 | [diff] [blame] | 2911 | msgstr = N_("fewer lines"); |
Bram Moolenaar | 1e60789 | 2006-03-13 22:15:53 +0000 | [diff] [blame] | 2912 | else |
| 2913 | { |
| 2914 | u_oldcount = u_newcount; |
| 2915 | if (u_newcount == 1) |
Bram Moolenaar | 89d4032 | 2006-08-29 15:30:07 +0000 | [diff] [blame] | 2916 | msgstr = N_("change"); |
Bram Moolenaar | 1e60789 | 2006-03-13 22:15:53 +0000 | [diff] [blame] | 2917 | else |
Bram Moolenaar | 89d4032 | 2006-08-29 15:30:07 +0000 | [diff] [blame] | 2918 | msgstr = N_("changes"); |
Bram Moolenaar | 1e60789 | 2006-03-13 22:15:53 +0000 | [diff] [blame] | 2919 | } |
| 2920 | |
Bram Moolenaar | efd2bf1 | 2006-03-16 21:41:35 +0000 | [diff] [blame] | 2921 | if (curbuf->b_u_curhead != NULL) |
Bram Moolenaar | 433f7c8 | 2006-03-21 21:29:36 +0000 | [diff] [blame] | 2922 | { |
Bram Moolenaar | db552d60 | 2006-03-23 22:59:57 +0000 | [diff] [blame] | 2923 | /* For ":undo N" we prefer a "after #N" message. */ |
Bram Moolenaar | 83d09bb | 2010-06-01 19:58:08 +0200 | [diff] [blame] | 2924 | if (absolute && curbuf->b_u_curhead->uh_next.ptr != NULL) |
Bram Moolenaar | db552d60 | 2006-03-23 22:59:57 +0000 | [diff] [blame] | 2925 | { |
Bram Moolenaar | 83d09bb | 2010-06-01 19:58:08 +0200 | [diff] [blame] | 2926 | uhp = curbuf->b_u_curhead->uh_next.ptr; |
Bram Moolenaar | db552d60 | 2006-03-23 22:59:57 +0000 | [diff] [blame] | 2927 | did_undo = FALSE; |
| 2928 | } |
| 2929 | else if (did_undo) |
Bram Moolenaar | 433f7c8 | 2006-03-21 21:29:36 +0000 | [diff] [blame] | 2930 | uhp = curbuf->b_u_curhead; |
| 2931 | else |
Bram Moolenaar | 83d09bb | 2010-06-01 19:58:08 +0200 | [diff] [blame] | 2932 | uhp = curbuf->b_u_curhead->uh_next.ptr; |
Bram Moolenaar | 433f7c8 | 2006-03-21 21:29:36 +0000 | [diff] [blame] | 2933 | } |
Bram Moolenaar | 1e60789 | 2006-03-13 22:15:53 +0000 | [diff] [blame] | 2934 | else |
Bram Moolenaar | efd2bf1 | 2006-03-16 21:41:35 +0000 | [diff] [blame] | 2935 | uhp = curbuf->b_u_newhead; |
Bram Moolenaar | 1e60789 | 2006-03-13 22:15:53 +0000 | [diff] [blame] | 2936 | |
Bram Moolenaar | efd2bf1 | 2006-03-16 21:41:35 +0000 | [diff] [blame] | 2937 | if (uhp == NULL) |
| 2938 | *msgbuf = NUL; |
| 2939 | else |
| 2940 | u_add_time(msgbuf, sizeof(msgbuf), uhp->uh_time); |
| 2941 | |
Bram Moolenaar | b2c0350 | 2010-07-02 20:20:09 +0200 | [diff] [blame] | 2942 | #ifdef FEAT_CONCEAL |
| 2943 | { |
| 2944 | win_T *wp; |
| 2945 | |
| 2946 | FOR_ALL_WINDOWS(wp) |
| 2947 | { |
Bram Moolenaar | f5963f7 | 2010-07-23 22:10:27 +0200 | [diff] [blame] | 2948 | if (wp->w_buffer == curbuf && wp->w_p_cole > 0) |
Bram Moolenaar | b2c0350 | 2010-07-02 20:20:09 +0200 | [diff] [blame] | 2949 | redraw_win_later(wp, NOT_VALID); |
| 2950 | } |
| 2951 | } |
| 2952 | #endif |
| 2953 | |
Bram Moolenaar | e042968 | 2018-07-01 16:44:03 +0200 | [diff] [blame] | 2954 | smsg_attr_keep(0, (char_u *)_("%ld %s; %s #%ld %s"), |
Bram Moolenaar | ca003e1 | 2006-03-17 23:19:38 +0000 | [diff] [blame] | 2955 | u_oldcount < 0 ? -u_oldcount : u_oldcount, |
Bram Moolenaar | 89d4032 | 2006-08-29 15:30:07 +0000 | [diff] [blame] | 2956 | _(msgstr), |
Bram Moolenaar | 433f7c8 | 2006-03-21 21:29:36 +0000 | [diff] [blame] | 2957 | did_undo ? _("before") : _("after"), |
| 2958 | uhp == NULL ? 0L : uhp->uh_seq, |
| 2959 | msgbuf); |
Bram Moolenaar | 071d427 | 2004-06-13 20:20:40 +0000 | [diff] [blame] | 2960 | } |
| 2961 | |
| 2962 | /* |
| 2963 | * u_sync: stop adding to the current entry list |
| 2964 | */ |
| 2965 | void |
Bram Moolenaar | 764b23c | 2016-01-30 21:10:09 +0100 | [diff] [blame] | 2966 | u_sync( |
| 2967 | int force) /* Also sync when no_u_sync is set. */ |
Bram Moolenaar | 071d427 | 2004-06-13 20:20:40 +0000 | [diff] [blame] | 2968 | { |
Bram Moolenaar | 779b74b | 2006-04-10 14:55:34 +0000 | [diff] [blame] | 2969 | /* Skip it when already synced or syncing is disabled. */ |
| 2970 | if (curbuf->b_u_synced || (!force && no_u_sync > 0)) |
| 2971 | return; |
Bram Moolenaar | 071d427 | 2004-06-13 20:20:40 +0000 | [diff] [blame] | 2972 | #if defined(FEAT_XIM) && defined(FEAT_GUI_GTK) |
Bram Moolenaar | 5c6dbcb | 2017-08-30 22:00:20 +0200 | [diff] [blame] | 2973 | if (p_imst == IM_ON_THE_SPOT && im_is_preediting()) |
Bram Moolenaar | 071d427 | 2004-06-13 20:20:40 +0000 | [diff] [blame] | 2974 | return; /* XIM is busy, don't break an undo sequence */ |
| 2975 | #endif |
Bram Moolenaar | f5a2fd8 | 2013-11-06 05:26:15 +0100 | [diff] [blame] | 2976 | if (get_undolevel() < 0) |
Bram Moolenaar | 071d427 | 2004-06-13 20:20:40 +0000 | [diff] [blame] | 2977 | curbuf->b_u_synced = TRUE; /* no entries, nothing to do */ |
| 2978 | else |
| 2979 | { |
| 2980 | u_getbot(); /* compute ue_bot of previous u_save */ |
| 2981 | curbuf->b_u_curhead = NULL; |
| 2982 | } |
| 2983 | } |
| 2984 | |
| 2985 | /* |
Bram Moolenaar | efd2bf1 | 2006-03-16 21:41:35 +0000 | [diff] [blame] | 2986 | * ":undolist": List the leafs of the undo tree |
| 2987 | */ |
Bram Moolenaar | efd2bf1 | 2006-03-16 21:41:35 +0000 | [diff] [blame] | 2988 | void |
Bram Moolenaar | 764b23c | 2016-01-30 21:10:09 +0100 | [diff] [blame] | 2989 | ex_undolist(exarg_T *eap UNUSED) |
Bram Moolenaar | efd2bf1 | 2006-03-16 21:41:35 +0000 | [diff] [blame] | 2990 | { |
| 2991 | garray_T ga; |
| 2992 | u_header_T *uhp; |
| 2993 | int mark; |
| 2994 | int nomark; |
| 2995 | int changes = 1; |
| 2996 | int i; |
| 2997 | |
| 2998 | /* |
| 2999 | * 1: walk the tree to find all leafs, put the info in "ga". |
| 3000 | * 2: sort the lines |
| 3001 | * 3: display the list |
| 3002 | */ |
| 3003 | mark = ++lastmark; |
| 3004 | nomark = ++lastmark; |
| 3005 | ga_init2(&ga, (int)sizeof(char *), 20); |
| 3006 | |
| 3007 | uhp = curbuf->b_u_oldhead; |
| 3008 | while (uhp != NULL) |
| 3009 | { |
Bram Moolenaar | 83d09bb | 2010-06-01 19:58:08 +0200 | [diff] [blame] | 3010 | if (uhp->uh_prev.ptr == NULL && uhp->uh_walk != nomark |
Bram Moolenaar | ca003e1 | 2006-03-17 23:19:38 +0000 | [diff] [blame] | 3011 | && uhp->uh_walk != mark) |
Bram Moolenaar | efd2bf1 | 2006-03-16 21:41:35 +0000 | [diff] [blame] | 3012 | { |
| 3013 | if (ga_grow(&ga, 1) == FAIL) |
| 3014 | break; |
Bram Moolenaar | ea39176 | 2018-04-08 13:07:22 +0200 | [diff] [blame] | 3015 | vim_snprintf((char *)IObuff, IOSIZE, "%6ld %7d ", |
Bram Moolenaar | efd2bf1 | 2006-03-16 21:41:35 +0000 | [diff] [blame] | 3016 | uhp->uh_seq, changes); |
| 3017 | u_add_time(IObuff + STRLEN(IObuff), IOSIZE - STRLEN(IObuff), |
| 3018 | uhp->uh_time); |
Bram Moolenaar | a800b42 | 2010-06-27 01:15:55 +0200 | [diff] [blame] | 3019 | if (uhp->uh_save_nr > 0) |
| 3020 | { |
Bram Moolenaar | dba01a0 | 2010-11-03 19:32:42 +0100 | [diff] [blame] | 3021 | while (STRLEN(IObuff) < 33) |
Bram Moolenaar | a800b42 | 2010-06-27 01:15:55 +0200 | [diff] [blame] | 3022 | STRCAT(IObuff, " "); |
| 3023 | vim_snprintf_add((char *)IObuff, IOSIZE, |
| 3024 | " %3ld", uhp->uh_save_nr); |
| 3025 | } |
Bram Moolenaar | efd2bf1 | 2006-03-16 21:41:35 +0000 | [diff] [blame] | 3026 | ((char_u **)(ga.ga_data))[ga.ga_len++] = vim_strsave(IObuff); |
| 3027 | } |
| 3028 | |
| 3029 | uhp->uh_walk = mark; |
| 3030 | |
| 3031 | /* go down in the tree if we haven't been there */ |
Bram Moolenaar | 83d09bb | 2010-06-01 19:58:08 +0200 | [diff] [blame] | 3032 | if (uhp->uh_prev.ptr != NULL && uhp->uh_prev.ptr->uh_walk != nomark |
| 3033 | && uhp->uh_prev.ptr->uh_walk != mark) |
Bram Moolenaar | efd2bf1 | 2006-03-16 21:41:35 +0000 | [diff] [blame] | 3034 | { |
Bram Moolenaar | 83d09bb | 2010-06-01 19:58:08 +0200 | [diff] [blame] | 3035 | uhp = uhp->uh_prev.ptr; |
Bram Moolenaar | efd2bf1 | 2006-03-16 21:41:35 +0000 | [diff] [blame] | 3036 | ++changes; |
| 3037 | } |
| 3038 | |
| 3039 | /* go to alternate branch if we haven't been there */ |
Bram Moolenaar | 83d09bb | 2010-06-01 19:58:08 +0200 | [diff] [blame] | 3040 | else if (uhp->uh_alt_next.ptr != NULL |
| 3041 | && uhp->uh_alt_next.ptr->uh_walk != nomark |
| 3042 | && uhp->uh_alt_next.ptr->uh_walk != mark) |
| 3043 | uhp = uhp->uh_alt_next.ptr; |
Bram Moolenaar | efd2bf1 | 2006-03-16 21:41:35 +0000 | [diff] [blame] | 3044 | |
| 3045 | /* go up in the tree if we haven't been there and we are at the |
| 3046 | * start of alternate branches */ |
Bram Moolenaar | 83d09bb | 2010-06-01 19:58:08 +0200 | [diff] [blame] | 3047 | else if (uhp->uh_next.ptr != NULL && uhp->uh_alt_prev.ptr == NULL |
| 3048 | && uhp->uh_next.ptr->uh_walk != nomark |
| 3049 | && uhp->uh_next.ptr->uh_walk != mark) |
Bram Moolenaar | efd2bf1 | 2006-03-16 21:41:35 +0000 | [diff] [blame] | 3050 | { |
Bram Moolenaar | 83d09bb | 2010-06-01 19:58:08 +0200 | [diff] [blame] | 3051 | uhp = uhp->uh_next.ptr; |
Bram Moolenaar | efd2bf1 | 2006-03-16 21:41:35 +0000 | [diff] [blame] | 3052 | --changes; |
| 3053 | } |
| 3054 | |
| 3055 | else |
| 3056 | { |
| 3057 | /* need to backtrack; mark this node as done */ |
| 3058 | uhp->uh_walk = nomark; |
Bram Moolenaar | 83d09bb | 2010-06-01 19:58:08 +0200 | [diff] [blame] | 3059 | if (uhp->uh_alt_prev.ptr != NULL) |
| 3060 | uhp = uhp->uh_alt_prev.ptr; |
Bram Moolenaar | efd2bf1 | 2006-03-16 21:41:35 +0000 | [diff] [blame] | 3061 | else |
| 3062 | { |
Bram Moolenaar | 83d09bb | 2010-06-01 19:58:08 +0200 | [diff] [blame] | 3063 | uhp = uhp->uh_next.ptr; |
Bram Moolenaar | efd2bf1 | 2006-03-16 21:41:35 +0000 | [diff] [blame] | 3064 | --changes; |
| 3065 | } |
| 3066 | } |
| 3067 | } |
| 3068 | |
| 3069 | if (ga.ga_len == 0) |
| 3070 | MSG(_("Nothing to undo")); |
| 3071 | else |
| 3072 | { |
| 3073 | sort_strings((char_u **)ga.ga_data, ga.ga_len); |
| 3074 | |
| 3075 | msg_start(); |
Bram Moolenaar | dba01a0 | 2010-11-03 19:32:42 +0100 | [diff] [blame] | 3076 | msg_puts_attr((char_u *)_("number changes when saved"), |
Bram Moolenaar | 8820b48 | 2017-03-16 17:23:31 +0100 | [diff] [blame] | 3077 | HL_ATTR(HLF_T)); |
Bram Moolenaar | efd2bf1 | 2006-03-16 21:41:35 +0000 | [diff] [blame] | 3078 | for (i = 0; i < ga.ga_len && !got_int; ++i) |
| 3079 | { |
| 3080 | msg_putchar('\n'); |
| 3081 | if (got_int) |
| 3082 | break; |
| 3083 | msg_puts(((char_u **)ga.ga_data)[i]); |
| 3084 | } |
| 3085 | msg_end(); |
| 3086 | |
| 3087 | ga_clear_strings(&ga); |
| 3088 | } |
| 3089 | } |
| 3090 | |
| 3091 | /* |
| 3092 | * Put the timestamp of an undo header in "buf[buflen]" in a nice format. |
| 3093 | */ |
| 3094 | static void |
Bram Moolenaar | 764b23c | 2016-01-30 21:10:09 +0100 | [diff] [blame] | 3095 | u_add_time(char_u *buf, size_t buflen, time_t tt) |
Bram Moolenaar | efd2bf1 | 2006-03-16 21:41:35 +0000 | [diff] [blame] | 3096 | { |
| 3097 | #ifdef HAVE_STRFTIME |
| 3098 | struct tm *curtime; |
| 3099 | |
Bram Moolenaar | 170b10b | 2016-07-29 16:15:27 +0200 | [diff] [blame] | 3100 | if (vim_time() - tt >= 100) |
Bram Moolenaar | efd2bf1 | 2006-03-16 21:41:35 +0000 | [diff] [blame] | 3101 | { |
| 3102 | curtime = localtime(&tt); |
Bram Moolenaar | 170b10b | 2016-07-29 16:15:27 +0200 | [diff] [blame] | 3103 | if (vim_time() - tt < (60L * 60L * 12L)) |
Bram Moolenaar | dba01a0 | 2010-11-03 19:32:42 +0100 | [diff] [blame] | 3104 | /* within 12 hours */ |
| 3105 | (void)strftime((char *)buf, buflen, "%H:%M:%S", curtime); |
Bram Moolenaar | dba01a0 | 2010-11-03 19:32:42 +0100 | [diff] [blame] | 3106 | else |
Bram Moolenaar | b9ce83e | 2012-08-23 12:59:02 +0200 | [diff] [blame] | 3107 | /* longer ago */ |
Bram Moolenaar | 5e3d6ca | 2011-01-22 21:25:11 +0100 | [diff] [blame] | 3108 | (void)strftime((char *)buf, buflen, "%Y/%m/%d %H:%M:%S", curtime); |
Bram Moolenaar | efd2bf1 | 2006-03-16 21:41:35 +0000 | [diff] [blame] | 3109 | } |
| 3110 | else |
| 3111 | #endif |
Bram Moolenaar | fd6100b | 2018-08-21 17:07:45 +0200 | [diff] [blame] | 3112 | { |
| 3113 | long seconds = (long)(vim_time() - tt); |
| 3114 | |
| 3115 | vim_snprintf((char *)buf, buflen, |
| 3116 | NGETTEXT("%ld second ago", "%ld seconds ago", seconds), |
| 3117 | seconds); |
| 3118 | } |
Bram Moolenaar | efd2bf1 | 2006-03-16 21:41:35 +0000 | [diff] [blame] | 3119 | } |
| 3120 | |
| 3121 | /* |
Bram Moolenaar | e224ffa | 2006-03-01 00:01:28 +0000 | [diff] [blame] | 3122 | * ":undojoin": continue adding to the last entry list |
| 3123 | */ |
Bram Moolenaar | e224ffa | 2006-03-01 00:01:28 +0000 | [diff] [blame] | 3124 | void |
Bram Moolenaar | 764b23c | 2016-01-30 21:10:09 +0100 | [diff] [blame] | 3125 | ex_undojoin(exarg_T *eap UNUSED) |
Bram Moolenaar | e224ffa | 2006-03-01 00:01:28 +0000 | [diff] [blame] | 3126 | { |
Bram Moolenaar | e224ffa | 2006-03-01 00:01:28 +0000 | [diff] [blame] | 3127 | if (curbuf->b_u_newhead == NULL) |
| 3128 | return; /* nothing changed before */ |
Bram Moolenaar | 57657d8 | 2006-04-21 22:12:41 +0000 | [diff] [blame] | 3129 | if (curbuf->b_u_curhead != NULL) |
| 3130 | { |
| 3131 | EMSG(_("E790: undojoin is not allowed after undo")); |
| 3132 | return; |
| 3133 | } |
| 3134 | if (!curbuf->b_u_synced) |
| 3135 | return; /* already unsynced */ |
Bram Moolenaar | f5a2fd8 | 2013-11-06 05:26:15 +0100 | [diff] [blame] | 3136 | if (get_undolevel() < 0) |
Bram Moolenaar | e224ffa | 2006-03-01 00:01:28 +0000 | [diff] [blame] | 3137 | return; /* no entries, nothing to do */ |
| 3138 | else |
Bram Moolenaar | 5e4e1b1 | 2017-01-17 22:09:45 +0100 | [diff] [blame] | 3139 | /* Append next change to the last entry */ |
| 3140 | curbuf->b_u_synced = FALSE; |
Bram Moolenaar | e224ffa | 2006-03-01 00:01:28 +0000 | [diff] [blame] | 3141 | } |
| 3142 | |
| 3143 | /* |
Bram Moolenaar | 59f931e | 2010-07-24 20:27:03 +0200 | [diff] [blame] | 3144 | * Called after writing or reloading the file and setting b_changed to FALSE. |
Bram Moolenaar | 071d427 | 2004-06-13 20:20:40 +0000 | [diff] [blame] | 3145 | * Now an undo means that the buffer is modified. |
| 3146 | */ |
| 3147 | void |
Bram Moolenaar | 764b23c | 2016-01-30 21:10:09 +0100 | [diff] [blame] | 3148 | u_unchanged(buf_T *buf) |
Bram Moolenaar | 071d427 | 2004-06-13 20:20:40 +0000 | [diff] [blame] | 3149 | { |
Bram Moolenaar | 1f4d4de | 2006-03-14 23:00:46 +0000 | [diff] [blame] | 3150 | u_unch_branch(buf->b_u_oldhead); |
| 3151 | buf->b_did_warn = FALSE; |
| 3152 | } |
| 3153 | |
Bram Moolenaar | 730cde9 | 2010-06-27 05:18:54 +0200 | [diff] [blame] | 3154 | /* |
Bram Moolenaar | f9bb734 | 2010-08-04 14:29:54 +0200 | [diff] [blame] | 3155 | * After reloading a buffer which was saved for 'undoreload': Find the first |
| 3156 | * line that was changed and set the cursor there. |
| 3157 | */ |
| 3158 | void |
Bram Moolenaar | 764b23c | 2016-01-30 21:10:09 +0100 | [diff] [blame] | 3159 | u_find_first_changed(void) |
Bram Moolenaar | f9bb734 | 2010-08-04 14:29:54 +0200 | [diff] [blame] | 3160 | { |
| 3161 | u_header_T *uhp = curbuf->b_u_newhead; |
| 3162 | u_entry_T *uep; |
| 3163 | linenr_T lnum; |
| 3164 | |
| 3165 | if (curbuf->b_u_curhead != NULL || uhp == NULL) |
| 3166 | return; /* undid something in an autocmd? */ |
| 3167 | |
| 3168 | /* Check that the last undo block was for the whole file. */ |
| 3169 | uep = uhp->uh_entry; |
| 3170 | if (uep->ue_top != 0 || uep->ue_bot != 0) |
| 3171 | return; |
| 3172 | |
| 3173 | for (lnum = 1; lnum < curbuf->b_ml.ml_line_count |
| 3174 | && lnum <= uep->ue_size; ++lnum) |
| 3175 | if (STRCMP(ml_get_buf(curbuf, lnum, FALSE), |
| 3176 | uep->ue_array[lnum - 1]) != 0) |
| 3177 | { |
Bram Moolenaar | b5aedf3 | 2017-03-12 18:23:53 +0100 | [diff] [blame] | 3178 | CLEAR_POS(&(uhp->uh_cursor)); |
Bram Moolenaar | f9bb734 | 2010-08-04 14:29:54 +0200 | [diff] [blame] | 3179 | uhp->uh_cursor.lnum = lnum; |
| 3180 | return; |
| 3181 | } |
| 3182 | if (curbuf->b_ml.ml_line_count != uep->ue_size) |
| 3183 | { |
| 3184 | /* lines added or deleted at the end, put the cursor there */ |
Bram Moolenaar | b5aedf3 | 2017-03-12 18:23:53 +0100 | [diff] [blame] | 3185 | CLEAR_POS(&(uhp->uh_cursor)); |
Bram Moolenaar | f9bb734 | 2010-08-04 14:29:54 +0200 | [diff] [blame] | 3186 | uhp->uh_cursor.lnum = lnum; |
| 3187 | } |
| 3188 | } |
| 3189 | |
| 3190 | /* |
Bram Moolenaar | 730cde9 | 2010-06-27 05:18:54 +0200 | [diff] [blame] | 3191 | * Increase the write count, store it in the last undo header, what would be |
| 3192 | * used for "u". |
| 3193 | */ |
| 3194 | void |
Bram Moolenaar | 764b23c | 2016-01-30 21:10:09 +0100 | [diff] [blame] | 3195 | u_update_save_nr(buf_T *buf) |
Bram Moolenaar | 730cde9 | 2010-06-27 05:18:54 +0200 | [diff] [blame] | 3196 | { |
| 3197 | u_header_T *uhp; |
| 3198 | |
| 3199 | ++buf->b_u_save_nr_last; |
| 3200 | buf->b_u_save_nr_cur = buf->b_u_save_nr_last; |
| 3201 | uhp = buf->b_u_curhead; |
| 3202 | if (uhp != NULL) |
| 3203 | uhp = uhp->uh_next.ptr; |
| 3204 | else |
| 3205 | uhp = buf->b_u_newhead; |
| 3206 | if (uhp != NULL) |
| 3207 | uhp->uh_save_nr = buf->b_u_save_nr_last; |
| 3208 | } |
| 3209 | |
Bram Moolenaar | 1f4d4de | 2006-03-14 23:00:46 +0000 | [diff] [blame] | 3210 | static void |
Bram Moolenaar | 764b23c | 2016-01-30 21:10:09 +0100 | [diff] [blame] | 3211 | u_unch_branch(u_header_T *uhp) |
Bram Moolenaar | 1f4d4de | 2006-03-14 23:00:46 +0000 | [diff] [blame] | 3212 | { |
Bram Moolenaar | 1e60789 | 2006-03-13 22:15:53 +0000 | [diff] [blame] | 3213 | u_header_T *uh; |
Bram Moolenaar | 071d427 | 2004-06-13 20:20:40 +0000 | [diff] [blame] | 3214 | |
Bram Moolenaar | 83d09bb | 2010-06-01 19:58:08 +0200 | [diff] [blame] | 3215 | for (uh = uhp; uh != NULL; uh = uh->uh_prev.ptr) |
Bram Moolenaar | 1f4d4de | 2006-03-14 23:00:46 +0000 | [diff] [blame] | 3216 | { |
Bram Moolenaar | 071d427 | 2004-06-13 20:20:40 +0000 | [diff] [blame] | 3217 | uh->uh_flags |= UH_CHANGED; |
Bram Moolenaar | 83d09bb | 2010-06-01 19:58:08 +0200 | [diff] [blame] | 3218 | if (uh->uh_alt_next.ptr != NULL) |
| 3219 | u_unch_branch(uh->uh_alt_next.ptr); /* recursive */ |
Bram Moolenaar | 1f4d4de | 2006-03-14 23:00:46 +0000 | [diff] [blame] | 3220 | } |
Bram Moolenaar | 071d427 | 2004-06-13 20:20:40 +0000 | [diff] [blame] | 3221 | } |
| 3222 | |
| 3223 | /* |
| 3224 | * Get pointer to last added entry. |
| 3225 | * If it's not valid, give an error message and return NULL. |
| 3226 | */ |
| 3227 | static u_entry_T * |
Bram Moolenaar | 764b23c | 2016-01-30 21:10:09 +0100 | [diff] [blame] | 3228 | u_get_headentry(void) |
Bram Moolenaar | 071d427 | 2004-06-13 20:20:40 +0000 | [diff] [blame] | 3229 | { |
| 3230 | if (curbuf->b_u_newhead == NULL || curbuf->b_u_newhead->uh_entry == NULL) |
| 3231 | { |
Bram Moolenaar | 95f0960 | 2016-11-10 20:01:45 +0100 | [diff] [blame] | 3232 | IEMSG(_("E439: undo list corrupt")); |
Bram Moolenaar | 071d427 | 2004-06-13 20:20:40 +0000 | [diff] [blame] | 3233 | return NULL; |
| 3234 | } |
| 3235 | return curbuf->b_u_newhead->uh_entry; |
| 3236 | } |
| 3237 | |
| 3238 | /* |
| 3239 | * u_getbot(): compute the line number of the previous u_save |
| 3240 | * It is called only when b_u_synced is FALSE. |
| 3241 | */ |
| 3242 | static void |
Bram Moolenaar | 764b23c | 2016-01-30 21:10:09 +0100 | [diff] [blame] | 3243 | u_getbot(void) |
Bram Moolenaar | 071d427 | 2004-06-13 20:20:40 +0000 | [diff] [blame] | 3244 | { |
| 3245 | u_entry_T *uep; |
| 3246 | linenr_T extra; |
| 3247 | |
| 3248 | uep = u_get_headentry(); /* check for corrupt undo list */ |
| 3249 | if (uep == NULL) |
| 3250 | return; |
| 3251 | |
| 3252 | uep = curbuf->b_u_newhead->uh_getbot_entry; |
| 3253 | if (uep != NULL) |
| 3254 | { |
| 3255 | /* |
| 3256 | * the new ue_bot is computed from the number of lines that has been |
| 3257 | * inserted (0 - deleted) since calling u_save. This is equal to the |
| 3258 | * old line count subtracted from the current line count. |
| 3259 | */ |
| 3260 | extra = curbuf->b_ml.ml_line_count - uep->ue_lcount; |
| 3261 | uep->ue_bot = uep->ue_top + uep->ue_size + 1 + extra; |
| 3262 | if (uep->ue_bot < 1 || uep->ue_bot > curbuf->b_ml.ml_line_count) |
| 3263 | { |
Bram Moolenaar | 95f0960 | 2016-11-10 20:01:45 +0100 | [diff] [blame] | 3264 | IEMSG(_("E440: undo line missing")); |
Bram Moolenaar | 071d427 | 2004-06-13 20:20:40 +0000 | [diff] [blame] | 3265 | uep->ue_bot = uep->ue_top + 1; /* assume all lines deleted, will |
| 3266 | * get all the old lines back |
| 3267 | * without deleting the current |
| 3268 | * ones */ |
| 3269 | } |
| 3270 | |
| 3271 | curbuf->b_u_newhead->uh_getbot_entry = NULL; |
| 3272 | } |
| 3273 | |
| 3274 | curbuf->b_u_synced = TRUE; |
| 3275 | } |
| 3276 | |
| 3277 | /* |
Bram Moolenaar | fecb660 | 2007-10-01 20:54:15 +0000 | [diff] [blame] | 3278 | * Free one header "uhp" and its entry list and adjust the pointers. |
Bram Moolenaar | 071d427 | 2004-06-13 20:20:40 +0000 | [diff] [blame] | 3279 | */ |
| 3280 | static void |
Bram Moolenaar | 764b23c | 2016-01-30 21:10:09 +0100 | [diff] [blame] | 3281 | u_freeheader( |
| 3282 | buf_T *buf, |
| 3283 | u_header_T *uhp, |
| 3284 | u_header_T **uhpp) /* if not NULL reset when freeing this header */ |
Bram Moolenaar | 071d427 | 2004-06-13 20:20:40 +0000 | [diff] [blame] | 3285 | { |
Bram Moolenaar | fecb660 | 2007-10-01 20:54:15 +0000 | [diff] [blame] | 3286 | u_header_T *uhap; |
| 3287 | |
Bram Moolenaar | 1e60789 | 2006-03-13 22:15:53 +0000 | [diff] [blame] | 3288 | /* When there is an alternate redo list free that branch completely, |
| 3289 | * because we can never go there. */ |
Bram Moolenaar | 83d09bb | 2010-06-01 19:58:08 +0200 | [diff] [blame] | 3290 | if (uhp->uh_alt_next.ptr != NULL) |
| 3291 | u_freebranch(buf, uhp->uh_alt_next.ptr, uhpp); |
Bram Moolenaar | 071d427 | 2004-06-13 20:20:40 +0000 | [diff] [blame] | 3292 | |
Bram Moolenaar | 83d09bb | 2010-06-01 19:58:08 +0200 | [diff] [blame] | 3293 | if (uhp->uh_alt_prev.ptr != NULL) |
| 3294 | uhp->uh_alt_prev.ptr->uh_alt_next.ptr = NULL; |
Bram Moolenaar | 071d427 | 2004-06-13 20:20:40 +0000 | [diff] [blame] | 3295 | |
Bram Moolenaar | 1e60789 | 2006-03-13 22:15:53 +0000 | [diff] [blame] | 3296 | /* Update the links in the list to remove the header. */ |
Bram Moolenaar | 83d09bb | 2010-06-01 19:58:08 +0200 | [diff] [blame] | 3297 | if (uhp->uh_next.ptr == NULL) |
| 3298 | buf->b_u_oldhead = uhp->uh_prev.ptr; |
Bram Moolenaar | 071d427 | 2004-06-13 20:20:40 +0000 | [diff] [blame] | 3299 | else |
Bram Moolenaar | 83d09bb | 2010-06-01 19:58:08 +0200 | [diff] [blame] | 3300 | uhp->uh_next.ptr->uh_prev.ptr = uhp->uh_prev.ptr; |
Bram Moolenaar | 071d427 | 2004-06-13 20:20:40 +0000 | [diff] [blame] | 3301 | |
Bram Moolenaar | 83d09bb | 2010-06-01 19:58:08 +0200 | [diff] [blame] | 3302 | if (uhp->uh_prev.ptr == NULL) |
| 3303 | buf->b_u_newhead = uhp->uh_next.ptr; |
Bram Moolenaar | 071d427 | 2004-06-13 20:20:40 +0000 | [diff] [blame] | 3304 | else |
Bram Moolenaar | 83d09bb | 2010-06-01 19:58:08 +0200 | [diff] [blame] | 3305 | for (uhap = uhp->uh_prev.ptr; uhap != NULL; |
| 3306 | uhap = uhap->uh_alt_next.ptr) |
| 3307 | uhap->uh_next.ptr = uhp->uh_next.ptr; |
Bram Moolenaar | 071d427 | 2004-06-13 20:20:40 +0000 | [diff] [blame] | 3308 | |
Bram Moolenaar | 1e60789 | 2006-03-13 22:15:53 +0000 | [diff] [blame] | 3309 | u_freeentries(buf, uhp, uhpp); |
| 3310 | } |
| 3311 | |
| 3312 | /* |
Bram Moolenaar | 1f4d4de | 2006-03-14 23:00:46 +0000 | [diff] [blame] | 3313 | * Free an alternate branch and any following alternate branches. |
Bram Moolenaar | 1e60789 | 2006-03-13 22:15:53 +0000 | [diff] [blame] | 3314 | */ |
| 3315 | static void |
Bram Moolenaar | 764b23c | 2016-01-30 21:10:09 +0100 | [diff] [blame] | 3316 | u_freebranch( |
| 3317 | buf_T *buf, |
| 3318 | u_header_T *uhp, |
| 3319 | u_header_T **uhpp) /* if not NULL reset when freeing this header */ |
Bram Moolenaar | 1e60789 | 2006-03-13 22:15:53 +0000 | [diff] [blame] | 3320 | { |
| 3321 | u_header_T *tofree, *next; |
| 3322 | |
Bram Moolenaar | 07d0677 | 2007-11-10 21:51:15 +0000 | [diff] [blame] | 3323 | /* If this is the top branch we may need to use u_freeheader() to update |
| 3324 | * all the pointers. */ |
| 3325 | if (uhp == buf->b_u_oldhead) |
| 3326 | { |
Bram Moolenaar | aa88732 | 2013-11-07 03:04:11 +0100 | [diff] [blame] | 3327 | while (buf->b_u_oldhead != NULL) |
| 3328 | u_freeheader(buf, buf->b_u_oldhead, uhpp); |
Bram Moolenaar | 07d0677 | 2007-11-10 21:51:15 +0000 | [diff] [blame] | 3329 | return; |
| 3330 | } |
| 3331 | |
Bram Moolenaar | 83d09bb | 2010-06-01 19:58:08 +0200 | [diff] [blame] | 3332 | if (uhp->uh_alt_prev.ptr != NULL) |
| 3333 | uhp->uh_alt_prev.ptr->uh_alt_next.ptr = NULL; |
Bram Moolenaar | 1e60789 | 2006-03-13 22:15:53 +0000 | [diff] [blame] | 3334 | |
| 3335 | next = uhp; |
| 3336 | while (next != NULL) |
| 3337 | { |
| 3338 | tofree = next; |
Bram Moolenaar | 83d09bb | 2010-06-01 19:58:08 +0200 | [diff] [blame] | 3339 | if (tofree->uh_alt_next.ptr != NULL) |
| 3340 | u_freebranch(buf, tofree->uh_alt_next.ptr, uhpp); /* recursive */ |
| 3341 | next = tofree->uh_prev.ptr; |
Bram Moolenaar | 1e60789 | 2006-03-13 22:15:53 +0000 | [diff] [blame] | 3342 | u_freeentries(buf, tofree, uhpp); |
| 3343 | } |
| 3344 | } |
| 3345 | |
| 3346 | /* |
| 3347 | * Free all the undo entries for one header and the header itself. |
| 3348 | * This means that "uhp" is invalid when returning. |
| 3349 | */ |
| 3350 | static void |
Bram Moolenaar | 764b23c | 2016-01-30 21:10:09 +0100 | [diff] [blame] | 3351 | u_freeentries( |
| 3352 | buf_T *buf, |
| 3353 | u_header_T *uhp, |
| 3354 | u_header_T **uhpp) /* if not NULL reset when freeing this header */ |
Bram Moolenaar | 1e60789 | 2006-03-13 22:15:53 +0000 | [diff] [blame] | 3355 | { |
| 3356 | u_entry_T *uep, *nuep; |
| 3357 | |
| 3358 | /* Check for pointers to the header that become invalid now. */ |
| 3359 | if (buf->b_u_curhead == uhp) |
| 3360 | buf->b_u_curhead = NULL; |
Bram Moolenaar | fecb660 | 2007-10-01 20:54:15 +0000 | [diff] [blame] | 3361 | if (buf->b_u_newhead == uhp) |
| 3362 | buf->b_u_newhead = NULL; /* freeing the newest entry */ |
Bram Moolenaar | 1e60789 | 2006-03-13 22:15:53 +0000 | [diff] [blame] | 3363 | if (uhpp != NULL && uhp == *uhpp) |
| 3364 | *uhpp = NULL; |
| 3365 | |
| 3366 | for (uep = uhp->uh_entry; uep != NULL; uep = nuep) |
| 3367 | { |
| 3368 | nuep = uep->ue_next; |
| 3369 | u_freeentry(uep, uep->ue_size); |
| 3370 | } |
| 3371 | |
Bram Moolenaar | fecb660 | 2007-10-01 20:54:15 +0000 | [diff] [blame] | 3372 | #ifdef U_DEBUG |
| 3373 | uhp->uh_magic = 0; |
| 3374 | #endif |
Bram Moolenaar | f05e3b0 | 2010-05-29 15:40:47 +0200 | [diff] [blame] | 3375 | vim_free((char_u *)uhp); |
Bram Moolenaar | 26a60b4 | 2005-02-22 08:49:11 +0000 | [diff] [blame] | 3376 | --buf->b_u_numhead; |
Bram Moolenaar | 071d427 | 2004-06-13 20:20:40 +0000 | [diff] [blame] | 3377 | } |
| 3378 | |
| 3379 | /* |
| 3380 | * free entry 'uep' and 'n' lines in uep->ue_array[] |
| 3381 | */ |
| 3382 | static void |
Bram Moolenaar | 764b23c | 2016-01-30 21:10:09 +0100 | [diff] [blame] | 3383 | u_freeentry(u_entry_T *uep, long n) |
Bram Moolenaar | 071d427 | 2004-06-13 20:20:40 +0000 | [diff] [blame] | 3384 | { |
Bram Moolenaar | 8d34330 | 2005-07-12 22:46:17 +0000 | [diff] [blame] | 3385 | while (n > 0) |
Bram Moolenaar | f05e3b0 | 2010-05-29 15:40:47 +0200 | [diff] [blame] | 3386 | vim_free(uep->ue_array[--n]); |
| 3387 | vim_free((char_u *)uep->ue_array); |
Bram Moolenaar | fecb660 | 2007-10-01 20:54:15 +0000 | [diff] [blame] | 3388 | #ifdef U_DEBUG |
| 3389 | uep->ue_magic = 0; |
| 3390 | #endif |
Bram Moolenaar | f05e3b0 | 2010-05-29 15:40:47 +0200 | [diff] [blame] | 3391 | vim_free((char_u *)uep); |
Bram Moolenaar | 071d427 | 2004-06-13 20:20:40 +0000 | [diff] [blame] | 3392 | } |
| 3393 | |
| 3394 | /* |
| 3395 | * invalidate the undo buffer; called when storage has already been released |
| 3396 | */ |
| 3397 | void |
Bram Moolenaar | 764b23c | 2016-01-30 21:10:09 +0100 | [diff] [blame] | 3398 | u_clearall(buf_T *buf) |
Bram Moolenaar | 071d427 | 2004-06-13 20:20:40 +0000 | [diff] [blame] | 3399 | { |
| 3400 | buf->b_u_newhead = buf->b_u_oldhead = buf->b_u_curhead = NULL; |
| 3401 | buf->b_u_synced = TRUE; |
| 3402 | buf->b_u_numhead = 0; |
| 3403 | buf->b_u_line_ptr = NULL; |
| 3404 | buf->b_u_line_lnum = 0; |
| 3405 | } |
| 3406 | |
| 3407 | /* |
| 3408 | * save the line "lnum" for the "U" command |
| 3409 | */ |
| 3410 | void |
Bram Moolenaar | 764b23c | 2016-01-30 21:10:09 +0100 | [diff] [blame] | 3411 | u_saveline(linenr_T lnum) |
Bram Moolenaar | 071d427 | 2004-06-13 20:20:40 +0000 | [diff] [blame] | 3412 | { |
| 3413 | if (lnum == curbuf->b_u_line_lnum) /* line is already saved */ |
| 3414 | return; |
Bram Moolenaar | 1ec484f | 2005-06-24 23:07:47 +0000 | [diff] [blame] | 3415 | if (lnum < 1 || lnum > curbuf->b_ml.ml_line_count) /* should never happen */ |
Bram Moolenaar | 071d427 | 2004-06-13 20:20:40 +0000 | [diff] [blame] | 3416 | return; |
| 3417 | u_clearline(); |
| 3418 | curbuf->b_u_line_lnum = lnum; |
| 3419 | if (curwin->w_cursor.lnum == lnum) |
| 3420 | curbuf->b_u_line_colnr = curwin->w_cursor.col; |
| 3421 | else |
| 3422 | curbuf->b_u_line_colnr = 0; |
| 3423 | if ((curbuf->b_u_line_ptr = u_save_line(lnum)) == NULL) |
| 3424 | do_outofmem_msg((long_u)0); |
| 3425 | } |
| 3426 | |
| 3427 | /* |
| 3428 | * clear the line saved for the "U" command |
| 3429 | * (this is used externally for crossing a line while in insert mode) |
| 3430 | */ |
| 3431 | void |
Bram Moolenaar | 764b23c | 2016-01-30 21:10:09 +0100 | [diff] [blame] | 3432 | u_clearline(void) |
Bram Moolenaar | 071d427 | 2004-06-13 20:20:40 +0000 | [diff] [blame] | 3433 | { |
| 3434 | if (curbuf->b_u_line_ptr != NULL) |
| 3435 | { |
Bram Moolenaar | d23a823 | 2018-02-10 18:45:26 +0100 | [diff] [blame] | 3436 | VIM_CLEAR(curbuf->b_u_line_ptr); |
Bram Moolenaar | 071d427 | 2004-06-13 20:20:40 +0000 | [diff] [blame] | 3437 | curbuf->b_u_line_lnum = 0; |
| 3438 | } |
| 3439 | } |
| 3440 | |
| 3441 | /* |
| 3442 | * Implementation of the "U" command. |
| 3443 | * Differentiation from vi: "U" can be undone with the next "U". |
| 3444 | * We also allow the cursor to be in another line. |
Bram Moolenaar | d04b750 | 2010-07-08 22:27:55 +0200 | [diff] [blame] | 3445 | * Careful: may trigger autocommands that reload the buffer. |
Bram Moolenaar | 071d427 | 2004-06-13 20:20:40 +0000 | [diff] [blame] | 3446 | */ |
| 3447 | void |
Bram Moolenaar | 764b23c | 2016-01-30 21:10:09 +0100 | [diff] [blame] | 3448 | u_undoline(void) |
Bram Moolenaar | 071d427 | 2004-06-13 20:20:40 +0000 | [diff] [blame] | 3449 | { |
| 3450 | colnr_T t; |
| 3451 | char_u *oldp; |
| 3452 | |
| 3453 | if (undo_off) |
| 3454 | return; |
| 3455 | |
Bram Moolenaar | e3300c8 | 2008-02-13 14:21:38 +0000 | [diff] [blame] | 3456 | if (curbuf->b_u_line_ptr == NULL |
| 3457 | || curbuf->b_u_line_lnum > curbuf->b_ml.ml_line_count) |
Bram Moolenaar | 071d427 | 2004-06-13 20:20:40 +0000 | [diff] [blame] | 3458 | { |
| 3459 | beep_flush(); |
| 3460 | return; |
| 3461 | } |
Bram Moolenaar | e3300c8 | 2008-02-13 14:21:38 +0000 | [diff] [blame] | 3462 | |
| 3463 | /* first save the line for the 'u' command */ |
Bram Moolenaar | 071d427 | 2004-06-13 20:20:40 +0000 | [diff] [blame] | 3464 | if (u_savecommon(curbuf->b_u_line_lnum - 1, |
Bram Moolenaar | 59f931e | 2010-07-24 20:27:03 +0200 | [diff] [blame] | 3465 | curbuf->b_u_line_lnum + 1, (linenr_T)0, FALSE) == FAIL) |
Bram Moolenaar | 071d427 | 2004-06-13 20:20:40 +0000 | [diff] [blame] | 3466 | return; |
| 3467 | oldp = u_save_line(curbuf->b_u_line_lnum); |
| 3468 | if (oldp == NULL) |
| 3469 | { |
| 3470 | do_outofmem_msg((long_u)0); |
| 3471 | return; |
| 3472 | } |
| 3473 | ml_replace(curbuf->b_u_line_lnum, curbuf->b_u_line_ptr, TRUE); |
| 3474 | changed_bytes(curbuf->b_u_line_lnum, 0); |
Bram Moolenaar | f05e3b0 | 2010-05-29 15:40:47 +0200 | [diff] [blame] | 3475 | vim_free(curbuf->b_u_line_ptr); |
Bram Moolenaar | 071d427 | 2004-06-13 20:20:40 +0000 | [diff] [blame] | 3476 | curbuf->b_u_line_ptr = oldp; |
| 3477 | |
| 3478 | t = curbuf->b_u_line_colnr; |
| 3479 | if (curwin->w_cursor.lnum == curbuf->b_u_line_lnum) |
| 3480 | curbuf->b_u_line_colnr = curwin->w_cursor.col; |
| 3481 | curwin->w_cursor.col = t; |
| 3482 | curwin->w_cursor.lnum = curbuf->b_u_line_lnum; |
Bram Moolenaar | e3300c8 | 2008-02-13 14:21:38 +0000 | [diff] [blame] | 3483 | check_cursor_col(); |
Bram Moolenaar | 071d427 | 2004-06-13 20:20:40 +0000 | [diff] [blame] | 3484 | } |
| 3485 | |
| 3486 | /* |
Bram Moolenaar | 26a60b4 | 2005-02-22 08:49:11 +0000 | [diff] [blame] | 3487 | * Free all allocated memory blocks for the buffer 'buf'. |
| 3488 | */ |
| 3489 | void |
Bram Moolenaar | 764b23c | 2016-01-30 21:10:09 +0100 | [diff] [blame] | 3490 | u_blockfree(buf_T *buf) |
Bram Moolenaar | 26a60b4 | 2005-02-22 08:49:11 +0000 | [diff] [blame] | 3491 | { |
Bram Moolenaar | 1e60789 | 2006-03-13 22:15:53 +0000 | [diff] [blame] | 3492 | while (buf->b_u_oldhead != NULL) |
Bram Moolenaar | 1f4d4de | 2006-03-14 23:00:46 +0000 | [diff] [blame] | 3493 | u_freeheader(buf, buf->b_u_oldhead, NULL); |
Bram Moolenaar | f05e3b0 | 2010-05-29 15:40:47 +0200 | [diff] [blame] | 3494 | vim_free(buf->b_u_line_ptr); |
Bram Moolenaar | 071d427 | 2004-06-13 20:20:40 +0000 | [diff] [blame] | 3495 | } |
| 3496 | |
| 3497 | /* |
Bram Moolenaar | f05e3b0 | 2010-05-29 15:40:47 +0200 | [diff] [blame] | 3498 | * u_save_line(): allocate memory and copy line 'lnum' into it. |
| 3499 | * Returns NULL when out of memory. |
Bram Moolenaar | 071d427 | 2004-06-13 20:20:40 +0000 | [diff] [blame] | 3500 | */ |
| 3501 | static char_u * |
Bram Moolenaar | 764b23c | 2016-01-30 21:10:09 +0100 | [diff] [blame] | 3502 | u_save_line(linenr_T lnum) |
Bram Moolenaar | 071d427 | 2004-06-13 20:20:40 +0000 | [diff] [blame] | 3503 | { |
Bram Moolenaar | f05e3b0 | 2010-05-29 15:40:47 +0200 | [diff] [blame] | 3504 | return vim_strsave(ml_get(lnum)); |
Bram Moolenaar | 071d427 | 2004-06-13 20:20:40 +0000 | [diff] [blame] | 3505 | } |
| 3506 | |
| 3507 | /* |
| 3508 | * Check if the 'modified' flag is set, or 'ff' has changed (only need to |
| 3509 | * check the first character, because it can only be "dos", "unix" or "mac"). |
| 3510 | * "nofile" and "scratch" type buffers are considered to always be unchanged. |
Bram Moolenaar | f405c8f | 2017-12-09 19:51:49 +0100 | [diff] [blame] | 3511 | * Also considers a buffer changed when a terminal window contains a running |
| 3512 | * job. |
Bram Moolenaar | 071d427 | 2004-06-13 20:20:40 +0000 | [diff] [blame] | 3513 | */ |
| 3514 | int |
Bram Moolenaar | 764b23c | 2016-01-30 21:10:09 +0100 | [diff] [blame] | 3515 | bufIsChanged(buf_T *buf) |
Bram Moolenaar | 071d427 | 2004-06-13 20:20:40 +0000 | [diff] [blame] | 3516 | { |
Bram Moolenaar | eb44a68 | 2017-08-03 22:44:55 +0200 | [diff] [blame] | 3517 | #ifdef FEAT_TERMINAL |
| 3518 | if (term_job_running(buf->b_term)) |
| 3519 | return TRUE; |
Bram Moolenaar | 071d427 | 2004-06-13 20:20:40 +0000 | [diff] [blame] | 3520 | #endif |
Bram Moolenaar | f405c8f | 2017-12-09 19:51:49 +0100 | [diff] [blame] | 3521 | return bufIsChangedNotTerm(buf); |
| 3522 | } |
| 3523 | |
| 3524 | /* |
| 3525 | * Like bufIsChanged() but ignoring a terminal window. |
| 3526 | */ |
| 3527 | int |
| 3528 | bufIsChangedNotTerm(buf_T *buf) |
| 3529 | { |
Bram Moolenaar | 4551c0a | 2018-06-20 22:38:21 +0200 | [diff] [blame] | 3530 | // In a "prompt" buffer we do respect 'modified', so that we can control |
| 3531 | // closing the window by setting or resetting that option. |
| 3532 | return (!bt_dontwrite(buf) || bt_prompt(buf)) |
Bram Moolenaar | eb44a68 | 2017-08-03 22:44:55 +0200 | [diff] [blame] | 3533 | && (buf->b_changed || file_ff_differs(buf, TRUE)); |
Bram Moolenaar | 071d427 | 2004-06-13 20:20:40 +0000 | [diff] [blame] | 3534 | } |
| 3535 | |
| 3536 | int |
Bram Moolenaar | 764b23c | 2016-01-30 21:10:09 +0100 | [diff] [blame] | 3537 | curbufIsChanged(void) |
Bram Moolenaar | 071d427 | 2004-06-13 20:20:40 +0000 | [diff] [blame] | 3538 | { |
Bram Moolenaar | eb44a68 | 2017-08-03 22:44:55 +0200 | [diff] [blame] | 3539 | return bufIsChanged(curbuf); |
Bram Moolenaar | 071d427 | 2004-06-13 20:20:40 +0000 | [diff] [blame] | 3540 | } |
Bram Moolenaar | a800b42 | 2010-06-27 01:15:55 +0200 | [diff] [blame] | 3541 | |
| 3542 | #if defined(FEAT_EVAL) || defined(PROTO) |
| 3543 | /* |
| 3544 | * For undotree(): Append the list of undo blocks at "first_uhp" to "list". |
| 3545 | * Recursive. |
| 3546 | */ |
| 3547 | void |
Bram Moolenaar | 764b23c | 2016-01-30 21:10:09 +0100 | [diff] [blame] | 3548 | u_eval_tree(u_header_T *first_uhp, list_T *list) |
Bram Moolenaar | a800b42 | 2010-06-27 01:15:55 +0200 | [diff] [blame] | 3549 | { |
| 3550 | u_header_T *uhp = first_uhp; |
| 3551 | dict_T *dict; |
| 3552 | |
| 3553 | while (uhp != NULL) |
| 3554 | { |
| 3555 | dict = dict_alloc(); |
| 3556 | if (dict == NULL) |
| 3557 | return; |
Bram Moolenaar | e0be167 | 2018-07-08 16:50:37 +0200 | [diff] [blame] | 3558 | dict_add_number(dict, "seq", uhp->uh_seq); |
| 3559 | dict_add_number(dict, "time", (long)uhp->uh_time); |
Bram Moolenaar | a800b42 | 2010-06-27 01:15:55 +0200 | [diff] [blame] | 3560 | if (uhp == curbuf->b_u_newhead) |
Bram Moolenaar | e0be167 | 2018-07-08 16:50:37 +0200 | [diff] [blame] | 3561 | dict_add_number(dict, "newhead", 1); |
Bram Moolenaar | a800b42 | 2010-06-27 01:15:55 +0200 | [diff] [blame] | 3562 | if (uhp == curbuf->b_u_curhead) |
Bram Moolenaar | e0be167 | 2018-07-08 16:50:37 +0200 | [diff] [blame] | 3563 | dict_add_number(dict, "curhead", 1); |
Bram Moolenaar | a800b42 | 2010-06-27 01:15:55 +0200 | [diff] [blame] | 3564 | if (uhp->uh_save_nr > 0) |
Bram Moolenaar | e0be167 | 2018-07-08 16:50:37 +0200 | [diff] [blame] | 3565 | dict_add_number(dict, "save", uhp->uh_save_nr); |
Bram Moolenaar | a800b42 | 2010-06-27 01:15:55 +0200 | [diff] [blame] | 3566 | |
| 3567 | if (uhp->uh_alt_next.ptr != NULL) |
| 3568 | { |
| 3569 | list_T *alt_list = list_alloc(); |
| 3570 | |
| 3571 | if (alt_list != NULL) |
| 3572 | { |
| 3573 | /* Recursive call to add alternate undo tree. */ |
| 3574 | u_eval_tree(uhp->uh_alt_next.ptr, alt_list); |
| 3575 | dict_add_list(dict, "alt", alt_list); |
| 3576 | } |
| 3577 | } |
| 3578 | |
| 3579 | list_append_dict(list, dict); |
| 3580 | uhp = uhp->uh_prev.ptr; |
| 3581 | } |
| 3582 | } |
| 3583 | #endif |