Update to ncurses-6.0
Change-Id: I98ab2ea8a5e13cca9f8b7cf6277b9b14a4da4299
diff --git a/test/savescreen.c b/test/savescreen.c
new file mode 100644
index 0000000..01bfe06
--- /dev/null
+++ b/test/savescreen.c
@@ -0,0 +1,493 @@
+/****************************************************************************
+ * Copyright (c) 2007-2011,2015 Free Software Foundation, Inc. *
+ * *
+ * Permission is hereby granted, free of charge, to any person obtaining a *
+ * copy of this software and associated documentation files (the *
+ * "Software"), to deal in the Software without restriction, including *
+ * without limitation the rights to use, copy, modify, merge, publish, *
+ * distribute, distribute with modifications, sublicense, and/or sell *
+ * copies of the Software, and to permit persons to whom the Software is *
+ * furnished to do so, subject to the following conditions: *
+ * *
+ * The above copyright notice and this permission notice shall be included *
+ * in all copies or substantial portions of the Software. *
+ * *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS *
+ * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF *
+ * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. *
+ * IN NO EVENT SHALL THE ABOVE COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, *
+ * DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR *
+ * OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR *
+ * THE USE OR OTHER DEALINGS IN THE SOFTWARE. *
+ * *
+ * Except as contained in this notice, the name(s) of the above copyright *
+ * holders shall not be used in advertising or otherwise to promote the *
+ * sale, use or other dealings in this Software without prior written *
+ * authorization. *
+ ****************************************************************************/
+/*
+ * $Id: savescreen.c,v 1.27 2015/03/28 23:21:28 tom Exp $
+ *
+ * Demonstrate save/restore functions from the curses library.
+ * Thomas Dickey - 2007/7/14
+ */
+
+#include <test.priv.h>
+
+#if HAVE_SCR_DUMP
+
+#include <sys/types.h>
+#include <sys/stat.h>
+
+#if TIME_WITH_SYS_TIME
+# include <sys/time.h>
+# include <time.h>
+#else
+# if HAVE_SYS_TIME_H
+# include <sys/time.h>
+# else
+# include <time.h>
+# endif
+#endif
+
+static bool use_init = FALSE;
+static bool keep_dumps = FALSE;
+
+static int
+fexists(const char *name)
+{
+ struct stat sb;
+ return (stat(name, &sb) == 0 && (sb.st_mode & S_IFMT) == S_IFREG);
+}
+
+static void
+setup_next(void)
+{
+ curs_set(1);
+ reset_shell_mode();
+}
+
+static void
+cleanup(char *files[])
+{
+ int n;
+
+ if (!keep_dumps) {
+ for (n = 0; files[n] != 0; ++n) {
+ unlink(files[n]);
+ }
+ }
+}
+
+static int
+load_screen(char *filename)
+{
+ int result;
+
+ if (use_init) {
+ if ((result = scr_init(filename)) != ERR)
+ result = scr_restore(filename);
+ } else {
+ result = scr_set(filename);
+ }
+ return result;
+}
+
+/*
+ * scr_restore() or scr_set() operates on curscr. If we read a character using
+ * getch() that will refresh stdscr, wiping out the result. To avoid that,
+ * copy the data back from curscr to stdscr.
+ */
+static void
+after_load(void)
+{
+ overwrite(curscr, stdscr);
+ doupdate();
+}
+
+static void
+show_what(int which, int last)
+{
+ int y, x, n;
+ time_t now;
+ char *mytime;
+
+ getyx(stdscr, y, x);
+
+ move(0, 0);
+ printw("Saved %d of %d (? for help)", which, last + 1);
+
+ now = time((time_t *) 0);
+ mytime = ctime(&now);
+ for (n = (int) strlen(mytime) - 1; n >= 0; --n) {
+ if (isspace(UChar(mytime[n]))) {
+ mytime[n] = '\0';
+ } else {
+ break;
+ }
+ }
+ mvprintw(0, (COLS - n - 2), " %s", mytime);
+
+ move(y, x);
+
+ refresh();
+}
+
+static int
+get_command(int which, int last)
+{
+ int ch;
+
+ timeout(50);
+
+ do {
+ show_what(which, last);
+ ch = getch();
+ } while (ch == ERR);
+
+ return ch;
+}
+
+static void
+show_help(const char **help)
+{
+ WINDOW *mywin = newwin(LINES, COLS, 0, 0);
+ int n;
+
+ box(mywin, 0, 0);
+ wmove(mywin, 1, 1);
+ for (n = 0; help[n] != 0; ++n) {
+ wmove(mywin, 1 + n, 2);
+ wprintw(mywin, "%.*s", COLS - 4, help[n]);
+ }
+ wgetch(mywin);
+ delwin(mywin);
+ touchwin(stdscr);
+ refresh();
+}
+
+static void
+editor_help(void)
+{
+ static const char *msgs[] =
+ {
+ "You are now in the screen-editor, which allows you to make some",
+ "lines on the screen, as well as save copies of the screen to a",
+ "temporary file",
+ "",
+ "Keys:",
+ " q quit",
+ " n run the screen-loader to show the saved screens",
+ " <space> dump a screen",
+ "",
+ " a toggle between '#' and graphic symbol for drawing",
+ " c change color drawn by line to next in palette",
+ " h,j,k,l or arrows to move around the screen, drawing",
+ };
+ show_help(msgs);
+}
+
+static void
+replay_help(void)
+{
+ static const char *msgs[] =
+ {
+ "You are now in the screen-loader, which allows you to view",
+ "the dumped/restored screens.",
+ "",
+ "Keys:",
+ " q quit",
+ " <space> load the next screen",
+ " <backspace> load the previous screen",
+ };
+ show_help(msgs);
+}
+
+static void
+usage(void)
+{
+ static const char *msg[] =
+ {
+ "Usage: savescreen [-r] files",
+ "",
+ "Options:",
+ " -f file fill/initialize screen using text from this file",
+ " -i use scr_init/scr_restore rather than scr_set",
+ " -k keep the restored dump-files rather than removing them",
+ " -r replay the screen-dump files"
+ };
+ unsigned n;
+ for (n = 0; n < SIZEOF(msg); ++n) {
+ fprintf(stderr, "%s\n", msg[n]);
+ }
+ ExitProgram(EXIT_FAILURE);
+}
+
+int
+main(int argc, char *argv[])
+{
+ int ch;
+ int which = 0;
+ int last;
+ bool replaying = FALSE;
+ bool done = FALSE;
+ char **files;
+ char *fill_by = 0;
+#if USE_WIDEC_SUPPORT
+ cchar_t mycc;
+ int myxx;
+#endif
+
+ setlocale(LC_ALL, "");
+
+ while ((ch = getopt(argc, argv, "f:ikr")) != -1) {
+ switch (ch) {
+ case 'f':
+ fill_by = optarg;
+ break;
+ case 'i':
+ use_init = TRUE;
+ break;
+ case 'k':
+ keep_dumps = TRUE;
+ break;
+ case 'r':
+ replaying = TRUE;
+ break;
+ default:
+ usage();
+ break;
+ }
+ }
+
+ files = argv + optind;
+ last = argc - optind - 1;
+
+ if (replaying) {
+ while (last >= 0 && !fexists(files[last]))
+ --last;
+ }
+
+ initscr();
+ cbreak();
+ noecho();
+ keypad(stdscr, TRUE);
+ curs_set(0);
+ if (has_colors()) {
+ short pair;
+ short color;
+
+ start_color();
+ /*
+ * Assume pairs is the square of colors, and assign pairs going down
+ * so that there is minimal conflict with the background color (which
+ * counts up). The intent is just to show how color pair values are
+ * saved and restored.
+ */
+ for (pair = 0; pair < COLOR_PAIRS; ++pair) {
+ color = (short) (pair % (COLORS - 1));
+ init_pair(pair, (short) (COLOR_WHITE - color), color);
+ }
+ }
+
+ if (fill_by != 0) {
+ FILE *fp = fopen(fill_by, "r");
+ if (fp != 0) {
+ bool filled = FALSE;
+ move(1, 0);
+ while ((ch = fgetc(fp)) != EOF) {
+ if (addch(UChar(ch)) == ERR) {
+ filled = TRUE;
+ break;
+ }
+ }
+ fclose(fp);
+ if (!filled) {
+ while (addch(' ') != ERR) {
+ ;
+ }
+ }
+ move(0, 0);
+ } else {
+ endwin();
+ fprintf(stderr, "Cannot open \"%s\"\n", fill_by);
+ ExitProgram(EXIT_FAILURE);
+ }
+ }
+
+ if (replaying) {
+
+ /*
+ * Use the last file as the initial/current screen.
+ */
+ if (last < 0) {
+ endwin();
+ printf("No screen-dumps given\n");
+ ExitProgram(EXIT_FAILURE);
+ }
+
+ which = last;
+ if (load_screen(files[which]) == ERR) {
+ endwin();
+ printf("Cannot load screen-dump %s\n", files[which]);
+ ExitProgram(EXIT_FAILURE);
+ }
+ after_load();
+
+ while (!done && (ch = getch()) != ERR) {
+ switch (ch) {
+ case 'n':
+ /*
+ * If we got a "next" here, skip to the final screen before
+ * moving to the next process.
+ */
+ setup_next();
+ which = last;
+ done = TRUE;
+ break;
+ case 'q':
+ cleanup(files);
+ done = TRUE;
+ break;
+ case KEY_BACKSPACE:
+ case '\b':
+ if (--which < 0)
+ which = last;
+ break;
+ case ' ':
+ if (++which > last)
+ which = 0;
+ break;
+ case '?':
+ replay_help();
+ break;
+ default:
+ beep();
+ continue;
+ }
+
+ if (ch == 'q') {
+ ;
+ } else if (scr_restore(files[which]) == ERR) {
+ endwin();
+ printf("Cannot load screen-dump %s\n", files[which]);
+ cleanup(files);
+ ExitProgram(EXIT_FAILURE);
+ } else {
+ wrefresh(curscr);
+ }
+ }
+ endwin();
+ } else {
+ int y = 0;
+ int x = 0;
+ int color = 0;
+ int altchars = 0;
+
+ while (!done) {
+ switch (get_command(which, last)) {
+ case 'n':
+ setup_next();
+ done = TRUE;
+ break;
+ case 'q':
+ cleanup(files);
+ done = TRUE;
+ break;
+ case ' ':
+ if (files[which] != 0) {
+ show_what(which + 1, last);
+ if (scr_dump(files[which]) == ERR) {
+ endwin();
+ printf("Cannot write screen-dump %s\n", files[which]);
+ cleanup(files);
+ done = TRUE;
+ break;
+ }
+ ++which;
+ if (has_colors()) {
+ int cx, cy;
+ short pair = (short) (which % COLOR_PAIRS);
+ /*
+ * Change the background color, to make it more
+ * obvious. But that changes the existing text-color.
+ * Copy the old values from the currently displayed
+ * screen.
+ */
+ bkgd((chtype) COLOR_PAIR(pair));
+ for (cy = 1; cy < LINES; ++cy) {
+ for (cx = 0; cx < COLS; ++cx) {
+ wmove(curscr, cy, cx);
+ wmove(stdscr, cy, cx);
+#if USE_WIDEC_SUPPORT
+ if (win_wch(curscr, &mycc) != ERR) {
+ myxx = wcwidth(mycc.chars[0]);
+ if (myxx > 0) {
+ wadd_wchnstr(stdscr, &mycc, 1);
+ cx += (myxx - 1);
+ }
+ }
+#else
+ waddch(stdscr, winch(curscr));
+#endif
+ }
+ }
+ }
+ } else {
+ beep();
+ }
+ break;
+ case KEY_LEFT:
+ case 'h':
+ if (--x < 0)
+ x = COLS - 1;
+ break;
+ case KEY_DOWN:
+ case 'j':
+ if (++y >= LINES)
+ y = 1;
+ break;
+ case KEY_UP:
+ case 'k':
+ if (--y < 1)
+ y = LINES - 1;
+ break;
+ case KEY_RIGHT:
+ case 'l':
+ if (++x >= COLS)
+ x = 0;
+ break;
+ case 'a':
+ altchars = !altchars;
+ break;
+ case 'c':
+ color = (color + 1) % COLORS;
+ break;
+ case '?':
+ editor_help();
+ break;
+ default:
+ beep();
+ continue;
+ }
+ if (!done) {
+ attr_t attr = (A_REVERSE | COLOR_PAIR(color * COLORS));
+ chtype ch2 = (altchars ? ACS_DIAMOND : '#');
+ move(y, x);
+ addch(ch2 | attr);
+ move(y, x);
+ }
+ }
+ endwin();
+ }
+ ExitProgram(EXIT_SUCCESS);
+}
+
+#else
+int
+main(int argc, char *argv[])
+{
+ printf("This program requires the screen-dump functions\n");
+ ExitProgram(EXIT_FAILURE);
+}
+#endif