1/* Copyright (C) 1996-2021 Free Software Foundation, Inc.
2 This file is part of the GNU C Library.
3 Contributed by Ulrich Drepper <drepper@gnu.org>, 1996.
4
5 This program is free software; you can redistribute it and/or modify
6 it under the terms of the GNU General Public License as published
7 by the Free Software Foundation; version 2 of the License, or
8 (at your option) any later version.
9
10 This program is distributed in the hope that it will be useful,
11 but WITHOUT ANY WARRANTY; without even the implied warranty of
12 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
13 GNU General Public License for more details.
14
15 You should have received a copy of the GNU General Public License
16 along with this program; if not, see <https://www.gnu.org/licenses/>. */
17
18#ifndef _CHARMAP_H
19#define _CHARMAP_H
20
21#include <obstack.h>
22#include <stdbool.h>
23#include <stdint.h>
24
25#include "repertoire.h"
26#include "simple-hash.h"
27
28
29struct width_rule
30{
31 struct charseq *from;
32 struct charseq *to;
33 unsigned int width;
34};
35
36
37struct charmap_t
38{
39 const char *code_set_name;
40 const char *repertoiremap;
41 int mb_cur_min;
42 int mb_cur_max;
43
44 struct width_rule *width_rules;
45 size_t nwidth_rules;
46 size_t nwidth_rules_max;
47 unsigned int width_default;
48
49 struct obstack mem_pool;
50 hash_table char_table;
51 hash_table byte_table;
52 hash_table ucs4_table;
53};
54
55
56/* This is the structure used for entries in the hash table. It represents
57 the sequence of bytes used for the coded character. */
58struct charseq
59{
60 const char *name;
61 uint32_t ucs4;
62 int nbytes;
63 unsigned char bytes[];
64};
65
66
67/* True if the encoding is not ASCII compatible. */
68extern bool enc_not_ascii_compatible;
69
70
71/* Prototypes for charmap handling functions. */
72extern struct charmap_t *charmap_read (const char *filename, int verbose,
73 int error_not_found, int be_quiet,
74 int use_default);
75
76/* Return the value stored under the given key in the hashing table. */
77extern struct charseq *charmap_find_value (const struct charmap_t *charmap,
78 const char *name, size_t len);
79
80/* Return symbol for given multibyte sequence. */
81extern struct charseq *charmap_find_symbol (const struct charmap_t *charmap,
82 const char *name, size_t len);
83
84#endif /* charmap.h */
85