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* _strdup(const char* str)
  52 {
  53     char * ret = MSVCRT_malloc(strlen(str)+1);
  54     if (ret) strcpy( ret, str );
  55     return ret;
  56 }
  57
  58 /*********************************************************************
  59  *              _strnset (MSVCRT.@)
  60  */
  61 char* _strnset(char* str, int value, MSVCRT_size_t len)
  62 {
  63   if (len > 0 && str)
  64     while (*str && len--)
  65       *str++ = value;
  66   return str;
  67 }
  68
  69 /*********************************************************************
  70  *              _strrev (MSVCRT.@)
  71  */
  72 char* _strrev(char* str)
  73 {
  74   char * p1;
  75   char * p2;
  76
  77   if (str && *str)
  78     for (p1 = str, p2 = str + strlen(str) - 1; p2 > p1; ++p1, --p2)
  79     {
  80       *p1 ^= *p2;
  81       *p2 ^= *p1;
  82       *p1 ^= *p2;
  83     }
  84
  85   return str;
  86 }
  87
  88 /*********************************************************************
  89  *              _strset (MSVCRT.@)
  90  */
  91 char* _strset(char* str, int value)
  92 {
  93   char *ptr = str;
  94   while (*ptr)
  95     *ptr++ = value;
  96
  97   return str;
  98 }
  99
 100 /*********************************************************************
 101  *              strtok  (MSVCRT.@)
 102  */
 103 char *MSVCRT_strtok( char *str, const char *delim )
 104 {
 105     thread_data_t *data = msvcrt_get_thread_data();
 106     char *ret;
 107
 108     if (!str)
 109         if (!(str = data->strtok_next)) return NULL;
 110
 111     while (*str && strchr( delim, *str )) str++;
 112     if (!*str) return NULL;
 113     ret = str++;
 114     while (*str && !strchr( delim, *str )) str++;
 115     if (*str) *str++ = 0;
 116     data->strtok_next = str;
 117     return ret;
 118 }
 119
 120
 121 /*********************************************************************
 122  *              _swab (MSVCRT.@)
 123  */
 124 void MSVCRT__swab(char* src, char* dst, int len)
 125 {
 126   if (len > 1)
 127   {
 128     len = (unsigned)len >> 1;
 129
 130     while (len--) {
 131       char s0 = src[0];
 132       char s1 = src[1];
 133       *dst++ = s1;
 134       *dst++ = s0;
 135       src = src + 2;
 136     }
 137   }
 138 }
 139
 140 /*********************************************************************
 141  *              atof  (MSVCRT.@)
 142  */
 143 double MSVCRT_atof( const char *str )
 144 {
 145     return atof( str );
 146 }
 147
 148 /*********************************************************************
 149  *              strtod  (MSVCRT.@)
 150  */
 151 double MSVCRT_strtod( const char *str, char **end )
 152 {
 153     return strtod( str, end );
 154 }
 155
 156 /*********************************************************************
 157  *              strcoll (MSVCRT.@)
 158  */
 159 int MSVCRT_strcoll( const char* str1, const char* str2 )
 160 {
 161     /* FIXME: handle Windows locale */
 162     return strcoll( str1, str2 );
 163 }
 164
 165 /*********************************************************************
 166  *              strxfrm (MSVCRT.@)
 167  */
 168 MSVCRT_size_t MSVCRT_strxfrm( char *dest, const char *src, MSVCRT_size_t len )
 169 {
 170     /* FIXME: handle Windows locale */
 171     return strxfrm( dest, src, len );
 172 }
 173
 174 /*********************************************************************
 175  *              _stricoll (MSVCRT.@)
 176  */
 177 INT MSVCRT__stricoll( const char* str1, const char* str2 )
 178 {
 179   /* FIXME: handle collates */
 180   TRACE("str1 %s str2 %s\n", debugstr_a(str1), debugstr_a(str2));
 181   return lstrcmpiA( str1, str2 );
 182 }