/*
 *      fhist - file history and comparison tools
 *      Copyright (C) 1998, 2000, 2002, 2008, 2010 Peter Miller
 *
 *      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; either version 3 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 COMMON_WSTR_H
#define COMMON_WSTR_H

#include <common/ac/stdlib.h>
#include <common/main.h>

typedef unsigned long wstr_hash_ty;

typedef struct wstring_ty wstring_ty;
struct wstring_ty
{
        wstr_hash_ty    wstr_hash;
        wstring_ty      *wstr_next;
        long            wstr_references;
        size_t          wstr_length;
        wchar_t         wstr_text[1];
};

wstring_ty *wstr_from_c(const char *);
wstring_ty *wstr_from_wc(const wchar_t *);
wstring_ty *wstr_n_from_c(const char *, size_t);
wstring_ty *wstr_n_from_wc(const wchar_t *, size_t);
wstring_ty *wstr_copy(wstring_ty *);
void wstr_free(wstring_ty *);
wstring_ty *wstr_catenate(wstring_ty *, wstring_ty *);
wstring_ty *wstr_cat_three(wstring_ty *, wstring_ty *, wstring_ty *);
wstring_ty *wstr_to_upper(const wstring_ty *);
wstring_ty *wstr_to_lower(const wstring_ty *);
wstring_ty *wstr_to_ident(const wstring_ty *);
void wstr_to_mbs(wstring_ty *, char **, size_t *);
int wstr_equal(wstring_ty *, wstring_ty *);

#ifndef DEBUG
#define wstr_equal(s1, s2) ((s1) == (s2))
#endif

struct string_ty;
struct string_ty *wstr_to_str(wstring_ty *);
wstring_ty *str_to_wstr(struct string_ty *);

#endif /* COMMON_WSTR_H */
