dlls/user32/lstr.c

   1 /*
   2  * USER string functions
   3  *
   4  * Copyright 1993 Yngvi Sigurjonsson (yngvi@hafro.is)
   5  * Copyright 1996 Alexandre Julliard
   6  * Copyright 1996 Marcus Meissner
   7  *
   8  * This library is free software; you can redistribute it and/or
   9  * modify it under the terms of the GNU Lesser General Public
  10  * License as published by the Free Software Foundation; either
  11  * version 2.1 of the License, or (at your option) any later version.
  12  *
  13  * This library is distributed in the hope that it will be useful,
  14  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  15  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  16  * Lesser General Public License for more details.
  17  *
  18  * You should have received a copy of the GNU Lesser General Public
  19  * License along with this library; if not, write to the Free Software
  20  * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301, USA
  21  */
  22
  23 #include "config.h"
  24 #include "wine/port.h"
  25
  26 #include <ctype.h>
  27 #include <stdarg.h>
  28 #include <stdlib.h>
  29 #include <stdio.h>
  30 #include <string.h>
  31
  32 #include "windef.h"
  33 #include "winbase.h"
  34 #include "winuser.h"
  35 #include "winerror.h"
  36
  37 #include "wine/exception.h"
  38 #include "wine/unicode.h"
  39 #include "excpt.h"
  40
  41
  42 /***********************************************************************
  43  *           CharNextA   (USER32.@)
  44  */
  45 LPSTR WINAPI CharNextA( LPCSTR ptr )
  46 {
  47     if (!*ptr) return (LPSTR)ptr;
  48     if (IsDBCSLeadByte( ptr[0] ) && ptr[1]) return (LPSTR)(ptr + 2);
  49     return (LPSTR)(ptr + 1);
  50 }
  51
  52
  53 /***********************************************************************
  54  *           CharNextExA   (USER32.@)
  55  */
  56 LPSTR WINAPI CharNextExA( WORD codepage, LPCSTR ptr, DWORD flags )
  57 {
  58     if (!*ptr) return (LPSTR)ptr;
  59     if (IsDBCSLeadByteEx( codepage, ptr[0] ) && ptr[1]) return (LPSTR)(ptr + 2);
  60     return (LPSTR)(ptr + 1);
  61 }
  62
  63
  64 /***********************************************************************
  65  *           CharNextExW   (USER32.@)
  66  */
  67 LPWSTR WINAPI CharNextExW( WORD codepage, LPCWSTR ptr, DWORD flags )
  68 {
  69     /* doesn't make sense, there are no codepages for Unicode */
  70     return NULL;
  71 }
  72
  73
  74 /***********************************************************************
  75  *           CharNextW   (USER32.@)
  76  */
  77 LPWSTR WINAPI CharNextW(LPCWSTR x)
  78 {
  79     if (*x) x++;
  80
  81     return (LPWSTR)x;
  82 }
  83
  84
  85 /***********************************************************************
  86  *           CharPrevA   (USER32.@)
  87  */
  88 LPSTR WINAPI CharPrevA( LPCSTR start, LPCSTR ptr )
  89 {
  90     while (*start && (start < ptr))
  91     {
  92         LPCSTR next = CharNextA( start );
  93         if (next >= ptr) break;
  94         start = next;
  95     }
  96     return (LPSTR)start;
  97 }
  98
  99
 100 /***********************************************************************
 101  *           CharPrevExA   (USER32.@)
 102  */
 103 LPSTR WINAPI CharPrevExA( WORD codepage, LPCSTR start, LPCSTR ptr, DWORD flags )
 104 {
 105     while (*start && (start < ptr))
 106     {
 107         LPCSTR next = CharNextExA( codepage, start, flags );
 108         if (next >= ptr) break;
 109         start = next;
 110     }
 111     return (LPSTR)start;
 112 }
 113
 114
 115 /***********************************************************************
 116  *           CharPrevExW   (USER32.@)
 117  */
 118 LPSTR WINAPI CharPrevExW( WORD codepage, LPCWSTR start, LPCWSTR ptr, DWORD flags )
 119 {
 120     /* doesn't make sense, there are no codepages for Unicode */
 121     return NULL;
 122 }
 123
 124
 125 /***********************************************************************
 126  *           CharPrevW   (USER32.@)
 127  */
 128 LPWSTR WINAPI CharPrevW(LPCWSTR start,LPCWSTR x)
 129 {
 130     if (x>start) return (LPWSTR)(x-1);
 131     else return (LPWSTR)x;
 132 }
 133
 134
 135 /***********************************************************************
 136  *           CharToOemA   (USER32.@)
 137  */
 138 BOOL WINAPI CharToOemA( LPCSTR s, LPSTR d )
 139 {
 140     if ( !s || !d ) return TRUE;
 141     return CharToOemBuffA( s, d, strlen( s ) + 1 );
 142 }
 143
 144
 145 /***********************************************************************
 146  *           CharToOemBuffA   (USER32.@)
 147  */
 148 BOOL WINAPI CharToOemBuffA( LPCSTR s, LPSTR d, DWORD len )
 149 {
 150     WCHAR *bufW;
 151
 152     bufW = HeapAlloc( GetProcessHeap(), 0, len * sizeof(WCHAR) );
 153     if( bufW )
 154     {
 155         MultiByteToWideChar( CP_ACP, 0, s, len, bufW, len );
 156         WideCharToMultiByte( CP_OEMCP, 0, bufW, len, d, len, NULL, NULL );
 157         HeapFree( GetProcessHeap(), 0, bufW );
 158     }
 159     return TRUE;
 160 }
 161
 162
 163 /***********************************************************************
 164  *           CharToOemBuffW   (USER32.@)
 165  */
 166 BOOL WINAPI CharToOemBuffW( LPCWSTR s, LPSTR d, DWORD len )
 167 {
 168    if ( !s || !d ) return TRUE;
 169     WideCharToMultiByte( CP_OEMCP, 0, s, len, d, len, NULL, NULL );
 170     return TRUE;
 171 }
 172
 173
 174 /***********************************************************************
 175  *           CharToOemW   (USER32.@)
 176  */
 177 BOOL WINAPI CharToOemW( LPCWSTR s, LPSTR d )
 178 {
 179     return CharToOemBuffW( s, d, strlenW( s ) + 1 );
 180 }
 181
 182
 183 /***********************************************************************
 184  *           OemToCharA   (USER32.@)
 185  */
 186 BOOL WINAPI OemToCharA( LPCSTR s, LPSTR d )
 187 {
 188     return OemToCharBuffA( s, d, strlen( s ) + 1 );
 189 }
 190
 191
 192 /***********************************************************************
 193  *           OemToCharBuffA   (USER32.@)
 194  */
 195 BOOL WINAPI OemToCharBuffA( LPCSTR s, LPSTR d, DWORD len )
 196 {
 197     WCHAR *bufW;
 198
 199     bufW = HeapAlloc( GetProcessHeap(), 0, len * sizeof(WCHAR) );
 200     if( bufW )
 201     {
 202         MultiByteToWideChar( CP_OEMCP, 0, s, len, bufW, len );
 203         WideCharToMultiByte( CP_ACP, 0, bufW, len, d, len, NULL, NULL );
 204         HeapFree( GetProcessHeap(), 0, bufW );
 205     }
 206     return TRUE;
 207 }
 208
 209
 210 /***********************************************************************
 211  *           OemToCharBuffW   (USER32.@)
 212  */
 213 BOOL WINAPI OemToCharBuffW( LPCSTR s, LPWSTR d, DWORD len )
 214 {
 215     MultiByteToWideChar( CP_OEMCP, 0, s, len, d, len );
 216     return TRUE;
 217 }
 218
 219
 220 /***********************************************************************
 221  *           OemToCharW   (USER32.@)
 222  */
 223 BOOL WINAPI OemToCharW( LPCSTR s, LPWSTR d )
 224 {
 225     return OemToCharBuffW( s, d, strlen( s ) + 1 );
 226 }
 227
 228
 229 /***********************************************************************
 230  *           CharLowerA   (USER32.@)
 231  */
 232 LPSTR WINAPI CharLowerA(LPSTR str)
 233 {
 234     if (!HIWORD(str))
 235     {
 236         char ch = LOWORD(str);
 237         CharLowerBuffA( &ch, 1 );
 238         return (LPSTR)(UINT_PTR)(BYTE)ch;
 239     }
 240
 241     __TRY
 242     {
 243         CharLowerBuffA( str, strlen(str) );
 244     }
 245     __EXCEPT_PAGE_FAULT
 246     {
 247         SetLastError( ERROR_INVALID_PARAMETER );
 248         return NULL;
 249     }
 250     __ENDTRY
 251     return str;
 252 }
 253
 254
 255 /***********************************************************************
 256  *           CharUpperA   (USER32.@)
 257  */
 258 LPSTR WINAPI CharUpperA(LPSTR str)
 259 {
 260     if (!HIWORD(str))
 261     {
 262         char ch = LOWORD(str);
 263         CharUpperBuffA( &ch, 1 );
 264         return (LPSTR)(UINT_PTR)(BYTE)ch;
 265     }
 266
 267     __TRY
 268     {
 269         CharUpperBuffA( str, strlen(str) );
 270     }
 271     __EXCEPT_PAGE_FAULT
 272     {
 273         SetLastError( ERROR_INVALID_PARAMETER );
 274         return NULL;
 275     }
 276     __ENDTRY
 277     return str;
 278 }
 279
 280
 281 /***********************************************************************
 282  *           CharLowerW   (USER32.@)
 283  */
 284 LPWSTR WINAPI CharLowerW(LPWSTR x)
 285 {
 286     if (HIWORD(x)) return strlwrW(x);
 287     else return (LPWSTR)((UINT_PTR)tolowerW(LOWORD(x)));
 288 }
 289
 290
 291 /***********************************************************************
 292  *           CharUpperW   (USER32.@)
 293  */
 294 LPWSTR WINAPI CharUpperW(LPWSTR x)
 295 {
 296     if (HIWORD(x)) return struprW(x);
 297     else return (LPWSTR)((UINT_PTR)toupperW(LOWORD(x)));
 298 }
 299
 300
 301 /***********************************************************************
 302  *           CharLowerBuffA   (USER32.@)
 303  */
 304 DWORD WINAPI CharLowerBuffA( LPSTR str, DWORD len )
 305 {
 306     DWORD lenW;
 307     WCHAR buffer[32];
 308     WCHAR *strW = buffer;
 309
 310     if (!str) return 0; /* YES */
 311
 312     lenW = MultiByteToWideChar(CP_ACP, 0, str, len, NULL, 0);
 313     if (lenW > sizeof(buffer)/sizeof(WCHAR))
 314     {
 315         strW = HeapAlloc(GetProcessHeap(), 0, lenW * sizeof(WCHAR));
 316         if (!strW) return 0;
 317     }
 318     MultiByteToWideChar(CP_ACP, 0, str, len, strW, lenW);
 319     CharLowerBuffW(strW, lenW);
 320     len = WideCharToMultiByte(CP_ACP, 0, strW, lenW, str, len, NULL, NULL);
 321     if (strW != buffer) HeapFree(GetProcessHeap(), 0, strW);
 322     return len;
 323 }
 324
 325
 326 /***********************************************************************
 327  *           CharLowerBuffW   (USER32.@)
 328  */
 329 DWORD WINAPI CharLowerBuffW( LPWSTR str, DWORD len )
 330 {
 331     DWORD ret = len;
 332     if (!str) return 0; /* YES */
 333     for (; len; len--, str++) *str = tolowerW(*str);
 334     return ret;
 335 }
 336
 337
 338 /***********************************************************************
 339  *           CharUpperBuffA   (USER32.@)
 340  */
 341 DWORD WINAPI CharUpperBuffA( LPSTR str, DWORD len )
 342 {
 343     DWORD lenW;
 344     WCHAR buffer[32];
 345     WCHAR *strW = buffer;
 346
 347     if (!str) return 0; /* YES */
 348
 349     lenW = MultiByteToWideChar(CP_ACP, 0, str, len, NULL, 0);
 350     if (lenW > sizeof(buffer)/sizeof(WCHAR))
 351     {
 352         strW = HeapAlloc(GetProcessHeap(), 0, lenW * sizeof(WCHAR));
 353         if (!strW) return 0;
 354     }
 355     MultiByteToWideChar(CP_ACP, 0, str, len, strW, lenW);
 356     CharUpperBuffW(strW, lenW);
 357     len = WideCharToMultiByte(CP_ACP, 0, strW, lenW, str, len, NULL, NULL);
 358     if (strW != buffer) HeapFree(GetProcessHeap(), 0, strW);
 359     return len;
 360 }
 361
 362
 363 /***********************************************************************
 364  *           CharUpperBuffW   (USER32.@)
 365  */
 366 DWORD WINAPI CharUpperBuffW( LPWSTR str, DWORD len )
 367 {
 368     DWORD ret = len;
 369     if (!str) return 0; /* YES */
 370     for (; len; len--, str++) *str = toupperW(*str);
 371     return ret;
 372 }
 373
 374
 375 /***********************************************************************
 376  *           IsCharLower    (USER.436)
 377  *           IsCharLowerA   (USER32.@)
 378  */
 379 BOOL WINAPI IsCharLowerA(CHAR x)
 380 {
 381     WCHAR wch;
 382     MultiByteToWideChar(CP_ACP, 0, &x, 1, &wch, 1);
 383     return IsCharLowerW(wch);
 384 }
 385
 386
 387 /***********************************************************************
 388  *           IsCharLowerW   (USER32.@)
 389  */
 390 BOOL WINAPI IsCharLowerW(WCHAR x)
 391 {
 392     return (get_char_typeW(x) & C1_LOWER) != 0;
 393 }
 394
 395
 396 /***********************************************************************
 397  *           IsCharUpper    (USER.435)
 398  *           IsCharUpperA   (USER32.@)
 399  */
 400 BOOL WINAPI IsCharUpperA(CHAR x)
 401 {
 402     WCHAR wch;
 403     MultiByteToWideChar(CP_ACP, 0, &x, 1, &wch, 1);
 404     return IsCharUpperW(wch);
 405 }
 406
 407
 408 /***********************************************************************
 409  *           IsCharUpperW   (USER32.@)
 410  */
 411 BOOL WINAPI IsCharUpperW(WCHAR x)
 412 {
 413     return (get_char_typeW(x) & C1_UPPER) != 0;
 414 }
 415
 416
 417 /***********************************************************************
 418  *           IsCharAlphaNumeric    (USER.434)
 419  *           IsCharAlphaNumericA   (USER32.@)
 420  */
 421 BOOL WINAPI IsCharAlphaNumericA(CHAR x)
 422 {
 423     WCHAR wch;
 424     MultiByteToWideChar(CP_ACP, 0, &x, 1, &wch, 1);
 425     return IsCharAlphaNumericW(wch);
 426 }
 427
 428
 429 /***********************************************************************
 430  *           IsCharAlphaNumericW   (USER32.@)
 431  */
 432 BOOL WINAPI IsCharAlphaNumericW(WCHAR x)
 433 {
 434     return (get_char_typeW(x) & (C1_ALPHA|C1_DIGIT)) != 0;
 435 }
 436
 437
 438 /***********************************************************************
 439  *           IsCharAlpha    (USER.433)
 440  *           IsCharAlphaA   (USER32.@)
 441  */
 442 BOOL WINAPI IsCharAlphaA(CHAR x)
 443 {
 444     WCHAR wch;
 445     MultiByteToWideChar(CP_ACP, 0, &x, 1, &wch, 1);
 446     return IsCharAlphaW(wch);
 447 }
 448
 449
 450 /***********************************************************************
 451  *           IsCharAlphaW   (USER32.@)
 452  */
 453 BOOL WINAPI IsCharAlphaW(WCHAR x)
 454 {
 455     return (get_char_typeW(x) & C1_ALPHA) != 0;
 456 }