/* Copyright (C) 1996-2018 Free Software Foundation, Inc.

   This file is part of the GNU C Library.

   Contributed by Ulrich Drepper <drepper@gnu.org>, 1996.

   This program is free software; you can redistribute it and/or modify

   it under the terms of the GNU General Public License as published

   by the Free Software Foundation; version 2 of the License, or

   (at your option) any later version.

   This program is distributed in the hope that it will be useful,

   but WITHOUT ANY WARRANTY; without even the implied warranty of

   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the

   GNU General Public License for more details.

   You should have received a copy of the GNU General Public License

   along with this program; if not, see <http://www.gnu.org/licenses/>.  */

#ifndef _CHARMAP_H

#define _CHARMAP_H

#include <obstack.h>

#include <stdbool.h>

#include <stdint.h>

#include "repertoire.h"

#include "simple-hash.h"

struct width_rule

{

  struct charseq *from;

  struct charseq *to;

  unsigned int width;

};

struct charmap_t

{

  const char *code_set_name;

  const char *repertoiremap;

  int mb_cur_min;

  int mb_cur_max;

  struct width_rule *width_rules;

  size_t nwidth_rules;

  size_t nwidth_rules_max;

  unsigned int width_default;

  struct obstack mem_pool;

  hash_table char_table;

  hash_table byte_table;

  hash_table ucs4_table;

};

/* This is the structure used for entries in the hash table.  It represents

   the sequence of bytes used for the coded character.  */

struct charseq

{

  const char *name;

  uint32_t ucs4;

  int nbytes;

  unsigned char bytes[0];

};

/* True if the encoding is not ASCII compatible.  */

extern bool enc_not_ascii_compatible;

/* Prototypes for charmap handling functions.  */

extern struct charmap_t *charmap_read (const char *filename, int verbose,

				       int error_not_found, int be_quiet,

				       int use_default);

/* Return the value stored under the given key in the hashing table.  */

extern struct charseq *charmap_find_value (const struct charmap_t *charmap,

					   const char *name, size_t len);

/* Return symbol for given multibyte sequence.  */

extern struct charseq *charmap_find_symbol (const struct charmap_t *charmap,

					    const char *name, size_t len);

#endif /* charmap.h */