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 #define _ISOC99_SOURCE
  25 #include "config.h"
  26
  27 #include <stdlib.h>
  28 #include "msvcrt.h"
  29 #include "wine/debug.h"
  30
  31 WINE_DEFAULT_DEBUG_CHANNEL(msvcrt);
  32
  33 /*********************************************************************
  34  *              _mbsdup (MSVCRT.@)
  35  *              _strdup (MSVCRT.@)
  36  */
  37 char* CDECL _strdup(const char* str)
  38 {
  39     if(str)
  40     {
  41       char * ret = MSVCRT_malloc(strlen(str)+1);
  42       if (ret) strcpy( ret, str );
  43       return ret;
  44     }
  45     else return 0;
  46 }
  47
  48 /*********************************************************************
  49  *              _strnset (MSVCRT.@)
  50  */
  51 char* CDECL _strnset(char* str, int value, MSVCRT_size_t len)
  52 {
  53   if (len > 0 && str)
  54     while (*str && len--)
  55       *str++ = value;
  56   return str;
  57 }
  58
  59 /*********************************************************************
  60  *              _strrev (MSVCRT.@)
  61  */
  62 char* CDECL _strrev(char* str)
  63 {
  64   char * p1;
  65   char * p2;
  66
  67   if (str && *str)
  68     for (p1 = str, p2 = str + strlen(str) - 1; p2 > p1; ++p1, --p2)
  69     {
  70       *p1 ^= *p2;
  71       *p2 ^= *p1;
  72       *p1 ^= *p2;
  73     }
  74
  75   return str;
  76 }
  77
  78 /*********************************************************************
  79  *              _strset (MSVCRT.@)
  80  */
  81 char* CDECL _strset(char* str, int value)
  82 {
  83   char *ptr = str;
  84   while (*ptr)
  85     *ptr++ = value;
  86
  87   return str;
  88 }
  89
  90 /*********************************************************************
  91  *              strtok  (MSVCRT.@)
  92  */
  93 char * CDECL MSVCRT_strtok( char *str, const char *delim )
  94 {
  95     thread_data_t *data = msvcrt_get_thread_data();
  96     char *ret;
  97
  98     if (!str)
  99         if (!(str = data->strtok_next)) return NULL;
 100
 101     while (*str && strchr( delim, *str )) str++;
 102     if (!*str) return NULL;
 103     ret = str++;
 104     while (*str && !strchr( delim, *str )) str++;
 105     if (*str) *str++ = 0;
 106     data->strtok_next = str;
 107     return ret;
 108 }
 109
 110
 111 /*********************************************************************
 112  *              _swab (MSVCRT.@)
 113  */
 114 void CDECL MSVCRT__swab(char* src, char* dst, int len)
 115 {
 116   if (len > 1)
 117   {
 118     len = (unsigned)len >> 1;
 119
 120     while (len--) {
 121       char s0 = src[0];
 122       char s1 = src[1];
 123       *dst++ = s1;
 124       *dst++ = s0;
 125       src = src + 2;
 126     }
 127   }
 128 }
 129
 130 /*********************************************************************
 131  *              atof  (MSVCRT.@)
 132  */
 133 double CDECL MSVCRT_atof( const char *str )
 134 {
 135     return atof( str );
 136 }
 137
 138 /*********************************************************************
 139  *              strtod  (MSVCRT.@)
 140  */
 141 double CDECL MSVCRT_strtod( const char *str, char **end )
 142 {
 143     return strtod( str, end );
 144 }
 145
 146 /*********************************************************************
 147  *              strcoll (MSVCRT.@)
 148  */
 149 int CDECL MSVCRT_strcoll( const char* str1, const char* str2 )
 150 {
 151     /* FIXME: handle Windows locale */
 152     return strcoll( str1, str2 );
 153 }
 154
 155 /*********************************************************************
 156  *      strcpy_s (MSVCRT.@)
 157  */
 158 int CDECL MSVCRT_strcpy_s( char* dst, MSVCRT_size_t elem, const char* src )
 159 {
 160     MSVCRT_size_t i;
 161     if(!elem) return MSVCRT_EINVAL;
 162     if(!dst) return MSVCRT_EINVAL;
 163     if(!src)
 164     {
 165         dst[0] = '\0';
 166         return MSVCRT_EINVAL;
 167     }
 168
 169     for(i = 0; i < elem; i++)
 170     {
 171         if((dst[i] = src[i]) == '\0') return 0;
 172     }
 173     dst[0] = '\0';
 174     return MSVCRT_ERANGE;
 175 }
 176
 177 /*********************************************************************
 178  *      strcat_s (MSVCRT.@)
 179  */
 180 int CDECL MSVCRT_strcat_s( char* dst, MSVCRT_size_t elem, const char* src )
 181 {
 182     MSVCRT_size_t i, j;
 183     if(!dst) return MSVCRT_EINVAL;
 184     if(elem == 0) return MSVCRT_EINVAL;
 185     if(!src)
 186     {
 187         dst[0] = '\0';
 188         return MSVCRT_EINVAL;
 189     }
 190
 191     for(i = 0; i < elem; i++)
 192     {
 193         if(dst[i] == '\0')
 194         {
 195             for(j = 0; (j + i) < elem; j++)
 196             {
 197                 if((dst[j + i] = src[j]) == '\0') return 0;
 198             }
 199         }
 200     }
 201     /* Set the first element to 0, not the first element after the skipped part */
 202     dst[0] = '\0';
 203     return MSVCRT_ERANGE;
 204 }
 205
 206 /*********************************************************************
 207  *              strxfrm (MSVCRT.@)
 208  */
 209 MSVCRT_size_t CDECL MSVCRT_strxfrm( char *dest, const char *src, MSVCRT_size_t len )
 210 {
 211     /* FIXME: handle Windows locale */
 212     return strxfrm( dest, src, len );
 213 }
 214
 215 /*********************************************************************
 216  *              _stricoll (MSVCRT.@)
 217  */
 218 int CDECL MSVCRT__stricoll( const char* str1, const char* str2 )
 219 {
 220   /* FIXME: handle collates */
 221   TRACE("str1 %s str2 %s\n", debugstr_a(str1), debugstr_a(str2));
 222   return lstrcmpiA( str1, str2 );
 223 }
 224
 225 /********************************************************************
 226  *              _atoldbl (MSVCRT.@)
 227  */
 228 int CDECL MSVCRT__atoldbl(MSVCRT__LDOUBLE *value, const char *str)
 229 {
 230   /* FIXME needs error checking for huge/small values */
 231 #ifdef HAVE_STRTOLD
 232   TRACE("str %s value %p\n",str,value);
 233   value->x = strtold(str,0);
 234 #else
 235   FIXME("stub, str %s value %p\n",str,value);
 236 #endif
 237   return 0;
 238 }
 239
 240 /********************************************************************
 241  *              __STRINGTOLD (MSVCRT.@)
 242  */
 243 int CDECL __STRINGTOLD( MSVCRT__LDOUBLE *value, char **endptr, const char *str, int flags )
 244 {
 245 #ifdef HAVE_STRTOLD
 246     FIXME("%p %p %s %x partial stub\n", value, endptr, str, flags );
 247     value->x = strtold(str,endptr);
 248 #else
 249     FIXME("%p %p %s %x stub\n", value, endptr, str, flags );
 250 #endif
 251     return 0;
 252 }