dlls/msvcrt/string.c

   1 /*
   2  * MSVCRT string functions
   3  *
   4  * Copyright 1996,1998 Marcus Meissner
   5  * Copyright 1996 Jukka Iivonen
   6  * Copyright 1997,2000 Uwe Bonnes
   7  * Copyright 2000 Jon Griffiths
   8  *
   9  * This library is free software; you can redistribute it and/or
  10  * modify it under the terms of the GNU Lesser General Public
  11  * License as published by the Free Software Foundation; either
  12  * version 2.1 of the License, or (at your option) any later version.
  13  *
  14  * This library is distributed in the hope that it will be useful,
  15  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  16  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  17  * Lesser General Public License for more details.
  18  *
  19  * You should have received a copy of the GNU Lesser General Public
  20  * License along with this library; if not, write to the Free Software
  21  * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301, USA
  22  */
  23
  24 #include <stdlib.h>
  25 #include "msvcrt.h"
  26 #include "wine/debug.h"
  27
  28 WINE_DEFAULT_DEBUG_CHANNEL(msvcrt);
  29
  30 /* INTERNAL: MSVCRT_malloc() based strndup */
  31 char* msvcrt_strndup(const char* buf, unsigned int size)
  32 {
  33   char* ret;
  34   unsigned int len = strlen(buf), max_len;
  35
  36   max_len = size <= len? size : len + 1;
  37
  38   ret = MSVCRT_malloc(max_len);
  39   if (ret)
  40   {
  41     memcpy(ret,buf,max_len);
  42     ret[max_len] = 0;
  43   }
  44   return ret;
  45 }
  46
  47 /*********************************************************************
  48  *              _mbsdup (MSVCRT.@)
  49  *              _strdup (MSVCRT.@)
  50  */
  51 char* CDECL _strdup(const char* str)
  52 {
  53     if(str)
  54     {
  55       char * ret = MSVCRT_malloc(strlen(str)+1);
  56       if (ret) strcpy( ret, str );
  57       return ret;
  58     }
  59     else return 0;
  60 }
  61
  62 /*********************************************************************
  63  *              _strnset (MSVCRT.@)
  64  */
  65 char* CDECL _strnset(char* str, int value, MSVCRT_size_t len)
  66 {
  67   if (len > 0 && str)
  68     while (*str && len--)
  69       *str++ = value;
  70   return str;
  71 }
  72
  73 /*********************************************************************
  74  *              _strrev (MSVCRT.@)
  75  */
  76 char* CDECL _strrev(char* str)
  77 {
  78   char * p1;
  79   char * p2;
  80
  81   if (str && *str)
  82     for (p1 = str, p2 = str + strlen(str) - 1; p2 > p1; ++p1, --p2)
  83     {
  84       *p1 ^= *p2;
  85       *p2 ^= *p1;
  86       *p1 ^= *p2;
  87     }
  88
  89   return str;
  90 }
  91
  92 /*********************************************************************
  93  *              _strset (MSVCRT.@)
  94  */
  95 char* CDECL _strset(char* str, int value)
  96 {
  97   char *ptr = str;
  98   while (*ptr)
  99     *ptr++ = value;
 100
 101   return str;
 102 }
 103
 104 /*********************************************************************
 105  *              strtok  (MSVCRT.@)
 106  */
 107 char * CDECL MSVCRT_strtok( char *str, const char *delim )
 108 {
 109     thread_data_t *data = msvcrt_get_thread_data();
 110     char *ret;
 111
 112     if (!str)
 113         if (!(str = data->strtok_next)) return NULL;
 114
 115     while (*str && strchr( delim, *str )) str++;
 116     if (!*str) return NULL;
 117     ret = str++;
 118     while (*str && !strchr( delim, *str )) str++;
 119     if (*str) *str++ = 0;
 120     data->strtok_next = str;
 121     return ret;
 122 }
 123
 124
 125 /*********************************************************************
 126  *              _swab (MSVCRT.@)
 127  */
 128 void CDECL MSVCRT__swab(char* src, char* dst, int len)
 129 {
 130   if (len > 1)
 131   {
 132     len = (unsigned)len >> 1;
 133
 134     while (len--) {
 135       char s0 = src[0];
 136       char s1 = src[1];
 137       *dst++ = s1;
 138       *dst++ = s0;
 139       src = src + 2;
 140     }
 141   }
 142 }
 143
 144 /*********************************************************************
 145  *              atof  (MSVCRT.@)
 146  */
 147 double CDECL MSVCRT_atof( const char *str )
 148 {
 149     return atof( str );
 150 }
 151
 152 /*********************************************************************
 153  *              strtod  (MSVCRT.@)
 154  */
 155 double CDECL MSVCRT_strtod( const char *str, char **end )
 156 {
 157     return strtod( str, end );
 158 }
 159
 160 /*********************************************************************
 161  *              strcoll (MSVCRT.@)
 162  */
 163 int CDECL MSVCRT_strcoll( const char* str1, const char* str2 )
 164 {
 165     /* FIXME: handle Windows locale */
 166     return strcoll( str1, str2 );
 167 }
 168
 169 /*********************************************************************
 170  *              strxfrm (MSVCRT.@)
 171  */
 172 MSVCRT_size_t CDECL MSVCRT_strxfrm( char *dest, const char *src, MSVCRT_size_t len )
 173 {
 174     /* FIXME: handle Windows locale */
 175     return strxfrm( dest, src, len );
 176 }
 177
 178 /*********************************************************************
 179  *              _stricoll (MSVCRT.@)
 180  */
 181 int CDECL MSVCRT__stricoll( const char* str1, const char* str2 )
 182 {
 183   /* FIXME: handle collates */
 184   TRACE("str1 %s str2 %s\n", debugstr_a(str1), debugstr_a(str2));
 185   return lstrcmpiA( str1, str2 );
 186 }