1 /**************************************************************************** 2 * Copyright (c) 1998-2008,2009 Free Software Foundation, Inc. * 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 47 MODULE_ID("$Id: comp_hash.c,v 1.48 2009/08/08 17:36:21 tom Exp $") 48 49 /* 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. 52 */ 53 /* entrypoint used by tack (do not alter) */ 54 NCURSES_EXPORT(struct name_table_entry const *) 55 _nc_find_entry(const char *string, 56 const HashValue * hash_table) 57 { 58 bool termcap = (hash_table != _nc_get_hash_table(FALSE)); 59 const HashData *data = _nc_get_hash_info(termcap); 60 int hashvalue; 61 struct name_table_entry const *ptr = 0; 62 struct name_table_entry const *real_table; 63 64 hashvalue = data->hash_of(string); 65 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]); 77 } 78 } 79 80 return (ptr); 81 } 82 83 /* 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). 87 * 88 * Returns a pointer to the entry in the table or 0 if not found. 89 */ 90 NCURSES_EXPORT(struct name_table_entry const *) 91 _nc_find_type_entry(const char *string, 92 int type, 93 bool termcap) 94 { 95 struct name_table_entry const *ptr = NULL; 96 const HashData *data = _nc_get_hash_info(termcap); 97 int hashvalue = data->hash_of(string); 98 99 if (data->table_data[hashvalue] >= 0) { 100 const struct name_table_entry *const table = _nc_get_table(termcap); 101 102 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; 107 break; 108 } 109 ptr = table + (ptr->nte_link + data->table_data[data->table_size]); 110 } 111 } 112 113 return ptr; 114 } 115