1 /* Copyright (C) 1996-2022 Free Software Foundation, Inc. 2 This file is part of the GNU C Library. 3 4 This program is free software; you can redistribute it and/or modify 5 it under the terms of the GNU General Public License as published 6 by the Free Software Foundation; version 2 of the License, or 7 (at your option) any later version. 8 9 This program is distributed in the hope that it will be useful, 10 but WITHOUT ANY WARRANTY; without even the implied warranty of 11 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 12 GNU General Public License for more details. 13 14 You should have received a copy of the GNU General Public License 15 along with this program; if not, see <https://www.gnu.org/licenses/>. */ 16 17 #ifndef _CHARMAP_H 18 #define _CHARMAP_H 19 20 #include <obstack.h> 21 #include <stdbool.h> 22 #include <stdint.h> 23 24 #include "repertoire.h" 25 #include "simple-hash.h" 26 27 28 struct width_rule 29 { 30 struct charseq *from; 31 struct charseq *to; 32 unsigned int width; 33 }; 34 35 36 struct charmap_t 37 { 38 const char *code_set_name; 39 const char *repertoiremap; 40 int mb_cur_min; 41 int mb_cur_max; 42 43 struct width_rule *width_rules; 44 size_t nwidth_rules; 45 size_t nwidth_rules_max; 46 unsigned int width_default; 47 48 struct obstack mem_pool; 49 hash_table char_table; 50 hash_table byte_table; 51 hash_table ucs4_table; 52 }; 53 54 55 /* This is the structure used for entries in the hash table. It represents 56 the sequence of bytes used for the coded character. */ 57 struct charseq 58 { 59 const char *name; 60 uint32_t ucs4; 61 int nbytes; 62 unsigned char bytes[]; 63 }; 64 65 66 /* True if the encoding is not ASCII compatible. */ 67 extern bool enc_not_ascii_compatible; 68 69 70 /* Prototypes for charmap handling functions. */ 71 extern struct charmap_t *charmap_read (const char *filename, int verbose, 72 int error_not_found, int be_quiet, 73 int use_default); 74 75 /* Return the value stored under the given key in the hashing table. */ 76 extern struct charseq *charmap_find_value (const struct charmap_t *charmap, 77 const char *name, size_t len); 78 79 /* Return symbol for given multibyte sequence. */ 80 extern struct charseq *charmap_find_symbol (const struct charmap_t *charmap, 81 const char *name, size_t len); 82 83 #endif /* charmap.h */ 84