dlls/crtdll/wcstring.c

   1 /*
   2  * CRTDLL wide-char functions
   3  *
   4  * Copyright 1999 Alexandre Julliard
   5  *
   6  * TODO:
   7  *   These functions are really necessary only if sizeof(WCHAR) != sizeof(wchar_t),
   8  *   otherwise we could use the libc functions directly.
   9  */
  10
  11 #include "config.h"
  12
  13 #include <ctype.h>
  14 #include <stdlib.h>
  15 #include <string.h>
  16 #ifdef HAVE_WCTYPE_H
  17 #include <wctype.h>
  18 #endif
  19
  20 #include "windef.h"
  21 #include "crtdll.h"
  22
  23
  24 /*********************************************************************
  25  *           CRTDLL__wcsdup    (CRTDLL.320)
  26  */
  27 LPWSTR __cdecl CRTDLL__wcsdup( LPCWSTR str )
  28 {
  29     LPWSTR ret = NULL;
  30     if (str)
  31     {
  32         int size = (CRTDLL_wcslen(str) + 1) * sizeof(WCHAR);
  33         ret = CRTDLL_malloc( size );
  34         if (ret) memcpy( ret, str, size );
  35     }
  36     return ret;
  37 }
  38
  39
  40 /*********************************************************************
  41  *           CRTDLL__wcsicmp    (CRTDLL.321)
  42  */
  43 INT __cdecl CRTDLL__wcsicmp( LPCWSTR str1, LPCWSTR str2 )
  44 {
  45     while (*str1 && (CRTDLL_towupper(*str1) == CRTDLL_towupper(*str2)))
  46     {
  47         str1++;
  48         str2++;
  49     }
  50     return CRTDLL_towupper(*str1) - CRTDLL_towupper(*str2);
  51 }
  52
  53
  54 /*********************************************************************
  55  *           CRTDLL__wcsicoll    (CRTDLL.322)
  56  */
  57 INT __cdecl CRTDLL__wcsicoll( LPCWSTR str1, LPCWSTR str2 )
  58 {
  59     /* FIXME: handle collates */
  60     return CRTDLL__wcsicmp( str1, str2 );
  61 }
  62
  63
  64 /*********************************************************************
  65  *           CRTDLL__wcslwr    (CRTDLL.323)
  66  */
  67 LPWSTR __cdecl CRTDLL__wcslwr( LPWSTR str )
  68 {
  69     LPWSTR ret = str;
  70     for ( ; *str; str++) *str = CRTDLL_towlower(*str);
  71     return ret;
  72 }
  73
  74
  75 /*********************************************************************
  76  *           CRTDLL__wcsnicmp    (CRTDLL.324)
  77  */
  78 INT __cdecl CRTDLL__wcsnicmp( LPCWSTR str1, LPCWSTR str2, INT n )
  79 {
  80     if (!n) return 0;
  81     while ((--n > 0) && *str1 && (CRTDLL_towupper(*str1) == CRTDLL_towupper(*str2)))
  82     {
  83         str1++;
  84         str2++;
  85     }
  86     return CRTDLL_towupper(*str1) - CRTDLL_towupper(*str2);
  87 }
  88
  89
  90 /*********************************************************************
  91  *           CRTDLL__wcsnset    (CRTDLL.325)
  92  */
  93 LPWSTR __cdecl CRTDLL__wcsnset( LPWSTR str, WCHAR c, INT n )
  94 {
  95     LPWSTR ret = str;
  96     while ((n-- > 0) && *str) *str++ = c;
  97     return ret;
  98 }
  99
 100
 101 /*********************************************************************
 102  *           CRTDLL__wcsrev    (CRTDLL.326)
 103  */
 104 LPWSTR __cdecl CRTDLL__wcsrev( LPWSTR str )
 105 {
 106     LPWSTR ret = str;
 107     LPWSTR end = str + CRTDLL_wcslen(str) - 1;
 108     while (end > str)
 109     {
 110         WCHAR t = *end;
 111         *end--  = *str;
 112         *str++  = t;
 113     }
 114     return ret;
 115 }
 116
 117
 118 /*********************************************************************
 119  *           CRTDLL__wcsset    (CRTDLL.327)
 120  */
 121 LPWSTR __cdecl CRTDLL__wcsset( LPWSTR str, WCHAR c )
 122 {
 123     LPWSTR ret = str;
 124     while (*str) *str++ = c;
 125     return ret;
 126 }
 127
 128
 129 /*********************************************************************
 130  *           CRTDLL__wcsupr    (CRTDLL.328)
 131  */
 132 LPWSTR __cdecl CRTDLL__wcsupr( LPWSTR str )
 133 {
 134     LPWSTR ret = str;
 135     for ( ; *str; str++) *str = CRTDLL_towupper(*str);
 136     return ret;
 137 }
 138
 139
 140 /*********************************************************************
 141  *           CRTDLL_towlower    (CRTDLL.493)
 142  */
 143 WCHAR __cdecl CRTDLL_towlower( WCHAR ch )
 144 {
 145 #ifdef HAVE_WCTYPE_H
 146     ch = (WCHAR)towlower( (wchar_t)ch );
 147 #else
 148     if (!HIBYTE(ch)) ch = (WCHAR)tolower( LOBYTE(ch) );  /* FIXME */
 149 #endif
 150     return ch;
 151 }
 152
 153
 154 /*********************************************************************
 155  *           CRTDLL_towupper    (CRTDLL.494)
 156  */
 157 WCHAR __cdecl CRTDLL_towupper( WCHAR ch )
 158 {
 159 #ifdef HAVE_WCTYPE_H
 160     ch = (WCHAR)towupper( (wchar_t)ch );
 161 #else
 162     if (!HIBYTE(ch)) ch = (WCHAR)toupper( LOBYTE(ch) );  /* FIXME */
 163 #endif
 164     return ch;
 165 }
 166
 167
 168 /***********************************************************************
 169  *           CRTDLL_wcscat    (CRTDLL.503)
 170  */
 171 LPWSTR __cdecl CRTDLL_wcscat( LPWSTR dst, LPCWSTR src )
 172 {
 173     LPWSTR p = dst;
 174     while (*p) p++;
 175     while ((*p++ = *src++));
 176     return dst;
 177 }
 178
 179
 180 /*********************************************************************
 181  *           CRTDLL_wcschr    (CRTDLL.504)
 182  */
 183 LPWSTR __cdecl CRTDLL_wcschr( LPCWSTR str, WCHAR ch )
 184 {
 185     while (*str)
 186     {
 187         if (*str == ch) return (LPWSTR)str;
 188         str++;
 189     }
 190     return NULL;
 191 }
 192
 193
 194 /*********************************************************************
 195  *           CRTDLL_wcscmp    (CRTDLL.505)
 196  */
 197 INT __cdecl CRTDLL_wcscmp( LPCWSTR str1, LPCWSTR str2 )
 198 {
 199     while (*str1 && (*str1 == *str2)) { str1++; str2++; }
 200     return (INT)(*str1 - *str2);
 201 }
 202
 203
 204 /*********************************************************************
 205  *           CRTDLL_wcscoll    (CRTDLL.506)
 206  */
 207 DWORD __cdecl CRTDLL_wcscoll( LPCWSTR str1, LPCWSTR str2 )
 208 {
 209     /* FIXME: handle collates */
 210     return CRTDLL_wcscmp( str1, str2 );
 211 }
 212
 213
 214 /***********************************************************************
 215  *           CRTDLL_wcscpy    (CRTDLL.507)
 216  */
 217 LPWSTR __cdecl CRTDLL_wcscpy( LPWSTR dst, LPCWSTR src )
 218 {
 219     LPWSTR p = dst;
 220     while ((*p++ = *src++));
 221     return dst;
 222 }
 223
 224
 225 /*********************************************************************
 226  *           CRTDLL_wcscspn    (CRTDLL.508)
 227  */
 228 INT __cdecl CRTDLL_wcscspn( LPCWSTR str, LPCWSTR reject )
 229 {
 230     LPCWSTR start = str;
 231     while (*str)
 232     {
 233         LPCWSTR p = reject;
 234         while (*p && (*p != *str)) p++;
 235         if (*p) break;
 236         str++;
 237     }
 238     return str - start;
 239 }
 240
 241
 242 /***********************************************************************
 243  *           CRTDLL_wcslen    (CRTDLL.510)
 244  */
 245 INT __cdecl CRTDLL_wcslen( LPCWSTR str )
 246 {
 247     LPCWSTR s = str;
 248     while (*s) s++;
 249     return s - str;
 250 }
 251
 252
 253 /*********************************************************************
 254  *           CRTDLL_wcsncat    (CRTDLL.511)
 255  */
 256 LPWSTR __cdecl CRTDLL_wcsncat( LPWSTR s1, LPCWSTR s2, INT n )
 257 {
 258     LPWSTR ret = s1;
 259     while (*s1) s1++;
 260     while (n-- > 0) if (!(*s1++ = *s2++)) return ret;
 261     *s1 = 0;
 262     return ret;
 263 }
 264
 265
 266 /*********************************************************************
 267  *           CRTDLL_wcsncmp    (CRTDLL.512)
 268  */
 269 INT __cdecl CRTDLL_wcsncmp( LPCWSTR str1, LPCWSTR str2, INT n )
 270 {
 271     if (!n) return 0;
 272     while ((--n > 0) && *str1 && (*str1 == *str2)) { str1++; str2++; }
 273     return (INT)(*str1 - *str2);
 274 }
 275
 276
 277 /*********************************************************************
 278  *           CRTDLL_wcsncpy    (CRTDLL.513)
 279  */
 280 LPWSTR __cdecl CRTDLL_wcsncpy( LPWSTR s1, LPCWSTR s2, INT n )
 281 {
 282     LPWSTR ret = s1;
 283     while (n-- > 0) if (!(*s1++ = *s2++)) break;
 284     while (n-- > 0) *s1++ = 0;
 285     return ret;
 286 }
 287
 288
 289 /*********************************************************************
 290  *           CRTDLL_wcspbrk    (CRTDLL.514)
 291  */
 292 LPWSTR __cdecl CRTDLL_wcspbrk( LPCWSTR str, LPCWSTR accept )
 293 {
 294     LPCWSTR p;
 295     while (*str)
 296     {
 297         for (p = accept; *p; p++) if (*p == *str) return (LPWSTR)str;
 298         str++;
 299     }
 300     return NULL;
 301 }
 302
 303
 304 /*********************************************************************
 305  *           CRTDLL_wcsrchr    (CRTDLL.515)
 306  */
 307 LPWSTR __cdecl CRTDLL_wcsrchr( LPWSTR str, WCHAR ch )
 308 {
 309     LPWSTR last = NULL;
 310     while (*str)
 311     {
 312         if (*str == ch) last = str;
 313         str++;
 314     }
 315     return last;
 316 }
 317
 318
 319 /*********************************************************************
 320  *           CRTDLL_wcsspn    (CRTDLL.516)
 321  */
 322 INT __cdecl CRTDLL_wcsspn( LPCWSTR str, LPCWSTR accept )
 323 {
 324     LPCWSTR start = str;
 325     while (*str)
 326     {
 327         LPCWSTR p = accept;
 328         while (*p && (*p != *str)) p++;
 329         if (!*p) break;
 330         str++;
 331     }
 332     return str - start;
 333 }
 334
 335
 336 /*********************************************************************
 337  *           CRTDLL_wcsstr    (CRTDLL.517)
 338  */
 339 LPWSTR __cdecl CRTDLL_wcsstr( LPCWSTR str, LPCWSTR sub )
 340 {
 341     while (*str)
 342     {
 343         LPCWSTR p1 = str, p2 = sub;
 344         while (*p1 && *p2 && *p1 == *p2) { p1++; p2++; }
 345         if (!*p2) return (LPWSTR)str;
 346         str++;
 347     }
 348     return NULL;
 349 }
 350
 351
 352 /*********************************************************************
 353  *           CRTDLL_wcstok    (CRTDLL.519)
 354  */
 355 LPWSTR __cdecl CRTDLL_wcstok( LPWSTR str, LPCWSTR delim )
 356 {
 357     static LPWSTR next = NULL;
 358     LPWSTR ret;
 359
 360     if (!str)
 361         if (!(str = next)) return NULL;
 362
 363     while (*str && CRTDLL_wcschr( delim, *str )) str++;
 364     if (!*str) return NULL;
 365     ret = str++;
 366     while (*str && !CRTDLL_wcschr( delim, *str )) str++;
 367     if (*str) *str++ = 0;
 368     next = str;
 369     return ret;
 370 }
 371
 372
 373 /*********************************************************************
 374  *           CRTDLL_wcstombs    (CRTDLL.521)
 375  */
 376 INT __cdecl CRTDLL_wcstombs( LPSTR dst, LPCWSTR src, INT n )
 377 {
 378     wchar_t *buffer, *p;
 379     int ret;
 380
 381     int size = (CRTDLL_wcslen(src) + 1) * sizeof(wchar_t);
 382     if (!(buffer = CRTDLL_malloc( size ))) return -1;
 383     p = buffer;
 384     while ((*p++ = (wchar_t)*src++));
 385     ret = wcstombs( dst, buffer, n );
 386     CRTDLL_free( buffer );
 387     return ret;
 388 }
 389
 390
 391 /*********************************************************************
 392  *           CRTDLL_wctomb    (CRTDLL.524)
 393  */
 394 INT __cdecl CRTDLL_wctomb( LPSTR dst, WCHAR ch )
 395 {
 396     return wctomb( dst, (wchar_t)ch );
 397 }