/*
 *	fhist - file history and comparison tools
 *	Copyright (C) 1998, 2000, 2002 Peter Miller;
 *	All rights reserved.
 *
 *	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 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, write to the Free Software
 *	Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111, USA.
 *
 * MANIFEST: interface definition for common/wstr.c
 */

#ifndef COMMON_WSTR_H
#define COMMON_WSTR_H

#include <ac/stdlib.h>
#include <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 */