1/* Copyright (C) 1996-2023 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
28struct width_rule
29{
30 struct charseq *from;
31 struct charseq *to;
32 unsigned int width;
33};
34
35
36struct 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. */
57struct 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. */
67extern bool enc_not_ascii_compatible;
68
69
70/* Prototypes for charmap handling functions. */
71extern 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. */
76extern 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. */
80extern struct charseq *charmap_find_symbol (const struct charmap_t *charmap,
81 const char *name, size_t len);
82
83#endif /* charmap.h */
84