/*
 * Wine internal Unicode definitions
 *
 * Copyright 2000 Alexandre Julliard
 *
 * This library is free software; you can redistribute it and/or
 * modify it under the terms of the GNU Lesser General Public
 * License as published by the Free Software Foundation; either
 * version 2.1 of the License, or (at your option) any later version.
 *
 * This library 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
 * Lesser General Public License for more details.
 *
 * You should have received a copy of the GNU Lesser General Public
 * License along with this library; if not, write to the Free Software
 * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301, USA
 */

#ifndef __WINE_WINE_UNICODE_H
#define __WINE_WINE_UNICODE_H

#include <stdarg.h>

#include <windef.h>
#include <winbase.h>
#include <winnls.h>

#ifdef __cplusplus
extern "C" {
#endif

extern long int strtolW( const WCHAR *nptr, WCHAR **endptr, int base );
extern int sprintfW( WCHAR *str, const WCHAR *format, ... );
extern int snprintfW( WCHAR *str, size_t len, const WCHAR *format, ... );
extern int vsprintfW( WCHAR *str, const WCHAR *format, va_list valist );
extern int vsnprintfW( WCHAR *str, size_t len, const WCHAR *format, va_list valist );

/* some useful string manipulation routines */

static inline unsigned int strlenW( const WCHAR *str )
{
    const WCHAR *s = str;
    while (*s) s++;
    return s - str;
}

static inline WCHAR *strcpyW( WCHAR *dst, const WCHAR *src )
{
    WCHAR *p = dst;
    while ((*p++ = *src++));
    return dst;
}

/* strncpy doesn't do what you think, don't use it */
#define strncpyW(d,s,n) error do_not_use_strncpyW_use_lstrcpynW_or_memcpy_instead

static inline WCHAR *strcpynW( WCHAR *dst, const WCHAR *src, unsigned count )
{
    WCHAR *d = dst;
    const WCHAR *s = src;

    while ((count > 1) && *s)
    {
        count--;
        *d++ = *s++;
    }
    if (count) *d = 0;
    return dst;
}

static inline int strcmpW( const WCHAR *str1, const WCHAR *str2 )
{
    while (*str1 && (*str1 == *str2)) { str1++; str2++; }
    return *str1 - *str2;
}

static inline int strncmpW( const WCHAR *str1, const WCHAR *str2, int n )
{
    if (n <= 0) return 0;
    while ((--n > 0) && *str1 && (*str1 == *str2)) { str1++; str2++; }
    return *str1 - *str2;
}

static inline WCHAR *strcatW( WCHAR *dst, const WCHAR *src )
{
    strcpyW( dst + strlenW(dst), src );
    return dst;
}

static inline WCHAR *strchrW( const WCHAR *str, WCHAR ch )
{
    do { if (*str == ch) return (WCHAR *)(uintptr_t)str; } while (*str++);
    return NULL;
}

static inline WCHAR *strrchrW( const WCHAR *str, WCHAR ch )
{
    WCHAR *ret = NULL;
    do { if (*str == ch) ret = (WCHAR *)(uintptr_t)str; } while (*str++);
    return ret;
}

static inline WCHAR *strpbrkW( const WCHAR *str, const WCHAR *accept )
{
    for ( ; *str; str++) if (strchrW( accept, *str )) return (WCHAR *)(uintptr_t)str;
    return NULL;
}

static inline size_t strspnW( const WCHAR *str, const WCHAR *accept )
{
    const WCHAR *ptr;
    for (ptr = str; *ptr; ptr++) if (!strchrW( accept, *ptr )) break;
    return ptr - str;
}

static inline size_t strcspnW( const WCHAR *str, const WCHAR *reject )
{
    const WCHAR *ptr;
    for (ptr = str; *ptr; ptr++) if (strchrW( reject, *ptr )) break;
    return ptr - str;
}

static inline WCHAR *memchrW( const WCHAR *ptr, WCHAR ch, size_t n )
{
    const WCHAR *end;
    for (end = ptr + n; ptr < end; ptr++) if (*ptr == ch) return (WCHAR *)(uintptr_t)ptr;
    return NULL;
}

static inline WCHAR *memrchrW( const WCHAR *ptr, WCHAR ch, size_t n )
{
    const WCHAR *end;
    WCHAR *ret = NULL;
    for (end = ptr + n; ptr < end; ptr++) if (*ptr == ch) ret = (WCHAR *)(uintptr_t)ptr;
    return ret;
}

static inline long int atolW( const WCHAR *str )
{
    return strtolW( str, (WCHAR **)0, 10 );
}

static inline int atoiW( const WCHAR *str )
{
    return (int)atolW( str );
}

#ifdef __cplusplus
}
#endif

#endif  /* __WINE_WINE_UNICODE_H */