Amit Daniel Kachhap | e6a01f5 | 2011-07-20 11:45:59 +0530 | [diff] [blame] | 1 | /**************************************************************************** |
Steve Kondik | ae271bc | 2015-11-15 02:50:53 +0100 | [diff] [blame] | 2 | * Copyright (c) 1998-2008,2009 Free Software Foundation, Inc. * |
Amit Daniel Kachhap | e6a01f5 | 2011-07-20 11:45:59 +0530 | [diff] [blame] | 3 | * * |
| 4 | * Permission is hereby granted, free of charge, to any person obtaining a * |
| 5 | * copy of this software and associated documentation files (the * |
| 6 | * "Software"), to deal in the Software without restriction, including * |
| 7 | * without limitation the rights to use, copy, modify, merge, publish, * |
| 8 | * distribute, distribute with modifications, sublicense, and/or sell * |
| 9 | * copies of the Software, and to permit persons to whom the Software is * |
| 10 | * furnished to do so, subject to the following conditions: * |
| 11 | * * |
| 12 | * The above copyright notice and this permission notice shall be included * |
| 13 | * in all copies or substantial portions of the Software. * |
| 14 | * * |
| 15 | * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS * |
| 16 | * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF * |
| 17 | * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. * |
| 18 | * IN NO EVENT SHALL THE ABOVE COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, * |
| 19 | * DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR * |
| 20 | * OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR * |
| 21 | * THE USE OR OTHER DEALINGS IN THE SOFTWARE. * |
| 22 | * * |
| 23 | * Except as contained in this notice, the name(s) of the above copyright * |
| 24 | * holders shall not be used in advertising or otherwise to promote the * |
| 25 | * sale, use or other dealings in this Software without prior written * |
| 26 | * authorization. * |
| 27 | ****************************************************************************/ |
| 28 | |
| 29 | /**************************************************************************** |
| 30 | * Author: Zeyd M. Ben-Halim <zmbenhal@netcom.com> 1992,1995 * |
| 31 | * and: Eric S. Raymond <esr@snark.thyrsus.com> * |
| 32 | * and: Thomas E. Dickey 1996-on * |
| 33 | ****************************************************************************/ |
| 34 | |
| 35 | /* |
| 36 | * comp_hash.c --- Routines to deal with the hashtable of capability |
| 37 | * names. |
| 38 | * |
| 39 | */ |
| 40 | |
| 41 | #define USE_TERMLIB 1 |
| 42 | #include <curses.priv.h> |
| 43 | |
| 44 | #include <tic.h> |
| 45 | #include <hashsize.h> |
| 46 | |
Steve Kondik | ae271bc | 2015-11-15 02:50:53 +0100 | [diff] [blame] | 47 | MODULE_ID("$Id: comp_hash.c,v 1.48 2009/08/08 17:36:21 tom Exp $") |
Amit Daniel Kachhap | e6a01f5 | 2011-07-20 11:45:59 +0530 | [diff] [blame] | 48 | |
| 49 | /* |
Steve Kondik | ae271bc | 2015-11-15 02:50:53 +0100 | [diff] [blame] | 50 | * Finds the entry for the given string in the hash table if present. |
| 51 | * Returns a pointer to the entry in the table or 0 if not found. |
Amit Daniel Kachhap | e6a01f5 | 2011-07-20 11:45:59 +0530 | [diff] [blame] | 52 | */ |
Steve Kondik | ae271bc | 2015-11-15 02:50:53 +0100 | [diff] [blame] | 53 | /* entrypoint used by tack (do not alter) */ |
Amit Daniel Kachhap | e6a01f5 | 2011-07-20 11:45:59 +0530 | [diff] [blame] | 54 | NCURSES_EXPORT(struct name_table_entry const *) |
| 55 | _nc_find_entry(const char *string, |
Steve Kondik | ae271bc | 2015-11-15 02:50:53 +0100 | [diff] [blame] | 56 | const HashValue * hash_table) |
Amit Daniel Kachhap | e6a01f5 | 2011-07-20 11:45:59 +0530 | [diff] [blame] | 57 | { |
Steve Kondik | ae271bc | 2015-11-15 02:50:53 +0100 | [diff] [blame] | 58 | bool termcap = (hash_table != _nc_get_hash_table(FALSE)); |
| 59 | const HashData *data = _nc_get_hash_info(termcap); |
Amit Daniel Kachhap | e6a01f5 | 2011-07-20 11:45:59 +0530 | [diff] [blame] | 60 | int hashvalue; |
| 61 | struct name_table_entry const *ptr = 0; |
| 62 | struct name_table_entry const *real_table; |
| 63 | |
Steve Kondik | ae271bc | 2015-11-15 02:50:53 +0100 | [diff] [blame] | 64 | hashvalue = data->hash_of(string); |
Amit Daniel Kachhap | e6a01f5 | 2011-07-20 11:45:59 +0530 | [diff] [blame] | 65 | |
Steve Kondik | ae271bc | 2015-11-15 02:50:53 +0100 | [diff] [blame] | 66 | if (data->table_data[hashvalue] >= 0) { |
| 67 | |
| 68 | real_table = _nc_get_table(termcap); |
| 69 | ptr = real_table + data->table_data[hashvalue]; |
| 70 | while (!data->compare_names(ptr->nte_name, string)) { |
| 71 | if (ptr->nte_link < 0) { |
| 72 | ptr = 0; |
| 73 | break; |
| 74 | } |
| 75 | ptr = real_table + (ptr->nte_link |
| 76 | + data->table_data[data->table_size]); |
Amit Daniel Kachhap | e6a01f5 | 2011-07-20 11:45:59 +0530 | [diff] [blame] | 77 | } |
| 78 | } |
| 79 | |
| 80 | return (ptr); |
| 81 | } |
| 82 | |
| 83 | /* |
Steve Kondik | ae271bc | 2015-11-15 02:50:53 +0100 | [diff] [blame] | 84 | * Finds the entry for the given name with the given type in the given table if |
| 85 | * present (as distinct from _nc_find_entry, which finds the last entry |
| 86 | * regardless of type). |
Amit Daniel Kachhap | e6a01f5 | 2011-07-20 11:45:59 +0530 | [diff] [blame] | 87 | * |
Steve Kondik | ae271bc | 2015-11-15 02:50:53 +0100 | [diff] [blame] | 88 | * Returns a pointer to the entry in the table or 0 if not found. |
Amit Daniel Kachhap | e6a01f5 | 2011-07-20 11:45:59 +0530 | [diff] [blame] | 89 | */ |
Amit Daniel Kachhap | e6a01f5 | 2011-07-20 11:45:59 +0530 | [diff] [blame] | 90 | NCURSES_EXPORT(struct name_table_entry const *) |
| 91 | _nc_find_type_entry(const char *string, |
| 92 | int type, |
Steve Kondik | ae271bc | 2015-11-15 02:50:53 +0100 | [diff] [blame] | 93 | bool termcap) |
Amit Daniel Kachhap | e6a01f5 | 2011-07-20 11:45:59 +0530 | [diff] [blame] | 94 | { |
Steve Kondik | ae271bc | 2015-11-15 02:50:53 +0100 | [diff] [blame] | 95 | struct name_table_entry const *ptr = NULL; |
| 96 | const HashData *data = _nc_get_hash_info(termcap); |
| 97 | int hashvalue = data->hash_of(string); |
Amit Daniel Kachhap | e6a01f5 | 2011-07-20 11:45:59 +0530 | [diff] [blame] | 98 | |
Steve Kondik | ae271bc | 2015-11-15 02:50:53 +0100 | [diff] [blame] | 99 | if (data->table_data[hashvalue] >= 0) { |
| 100 | const struct name_table_entry *const table = _nc_get_table(termcap); |
Amit Daniel Kachhap | e6a01f5 | 2011-07-20 11:45:59 +0530 | [diff] [blame] | 101 | |
Steve Kondik | ae271bc | 2015-11-15 02:50:53 +0100 | [diff] [blame] | 102 | ptr = table + data->table_data[hashvalue]; |
| 103 | while (ptr->nte_type != type |
| 104 | || !data->compare_names(ptr->nte_name, string)) { |
| 105 | if (ptr->nte_link < 0) { |
| 106 | ptr = 0; |
Amit Daniel Kachhap | e6a01f5 | 2011-07-20 11:45:59 +0530 | [diff] [blame] | 107 | break; |
Amit Daniel Kachhap | e6a01f5 | 2011-07-20 11:45:59 +0530 | [diff] [blame] | 108 | } |
Steve Kondik | ae271bc | 2015-11-15 02:50:53 +0100 | [diff] [blame] | 109 | ptr = table + (ptr->nte_link + data->table_data[data->table_size]); |
Amit Daniel Kachhap | e6a01f5 | 2011-07-20 11:45:59 +0530 | [diff] [blame] | 110 | } |
Amit Daniel Kachhap | e6a01f5 | 2011-07-20 11:45:59 +0530 | [diff] [blame] | 111 | } |
| 112 | |
Steve Kondik | ae271bc | 2015-11-15 02:50:53 +0100 | [diff] [blame] | 113 | return ptr; |
Amit Daniel Kachhap | e6a01f5 | 2011-07-20 11:45:59 +0530 | [diff] [blame] | 114 | } |