/*
 * 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>
#include <winternl.h>

#ifdef __WINE_USE_MSVCRT
#error This file should not be used with msvcrt headers
#endif

#ifndef WINE_UNICODE_INLINE
#define WINE_UNICODE_INLINE static FORCEINLINE
#endif

WINE_UNICODE_INLINE WCHAR tolowerW( WCHAR ch )
{
    return RtlDowncaseUnicodeChar( ch );
}

WINE_UNICODE_INLINE WCHAR toupperW( WCHAR ch )
{
    return RtlUpcaseUnicodeChar( ch );
}

WINE_UNICODE_INLINE int isspaceW( WCHAR wc )
{
    unsigned short type;
    GetStringTypeW( CT_CTYPE1, &wc, 1, &type );
    return type & C1_SPACE;
}

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

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

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

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

WINE_UNICODE_INLINE int strcmpiW( const WCHAR *str1, const WCHAR *str2 )
{
    for (;;)
    {
        int ret = tolowerW(*str1) - tolowerW(*str2);
        if (ret || !*str1) return ret;
        str1++;
        str2++;
    }
}

WINE_UNICODE_INLINE int strncmpiW( const WCHAR *str1, const WCHAR *str2, int n )
{
    int ret = 0;
    for ( ; n > 0; n--, str1++, str2++)
        if ((ret = tolowerW(*str1) - tolowerW(*str2)) || !*str1) break;
    return ret;
}

WINE_UNICODE_INLINE LONG strtolW( LPCWSTR s, LPWSTR *end, INT base )
{
    BOOL negative = FALSE, empty = TRUE;
    LONG ret = 0;

    if (base < 0 || base == 1 || base > 36) return 0;
    if (end) *end = (WCHAR *)s;
    while (isspaceW(*s)) s++;

    if (*s == '-')
    {
        negative = TRUE;
        s++;
    }
    else if (*s == '+') s++;

    if ((base == 0 || base == 16) && s[0] == '0' && (s[1] == 'x' || s[1] == 'X'))
    {
        base = 16;
        s += 2;
    }
    if (base == 0) base = s[0] != '0' ? 10 : 8;

    while (*s)
    {
        int v;

        if ('0' <= *s && *s <= '9') v = *s - '0';
        else if ('A' <= *s && *s <= 'Z') v = *s - 'A' + 10;
        else if ('a' <= *s && *s <= 'z') v = *s - 'a' + 10;
        else break;
        if (v >= base) break;
        if (negative) v = -v;
        s++;
        empty = FALSE;

        if (!negative && (ret > MAXLONG / base || ret * base > MAXLONG - v))
            ret = MAXLONG;
        else if (negative && (ret < (LONG)MINLONG / base || ret * base < (LONG)(MINLONG - v)))
            ret = MINLONG;
        else
            ret = ret * base + v;
    }

    if (end && !empty) *end = (WCHAR *)s;
    return ret;
}

NTSYSAPI int __cdecl _vsnwprintf(WCHAR*,size_t,const WCHAR*,__ms_va_list);

static inline int WINAPIV snprintfW( WCHAR *str, size_t len, const WCHAR *format, ...)
{
    int retval;
    __ms_va_list valist;
    __ms_va_start(valist, format);
    retval = _vsnwprintf(str, len, format, valist);
    __ms_va_end(valist);
    return retval;
}

static inline int WINAPIV sprintfW( WCHAR *str, const WCHAR *format, ...)
{
    int retval;
    __ms_va_list valist;
    __ms_va_start(valist, format);
    retval = _vsnwprintf(str, MAXLONG, format, valist);
    __ms_va_end(valist);
    return retval;
}

#undef WINE_UNICODE_INLINE

#endif  /* __WINE_WINE_UNICODE_H */