memory/codepage.c

   1 /*
   2  * Code page functions
   3  *
   4  * Copyright 2000 Alexandre Julliard
   5  *
   6  * This library is free software; you can redistribute it and/or
   7  * modify it under the terms of the GNU Lesser General Public
   8  * License as published by the Free Software Foundation; either
   9  * version 2.1 of the License, or (at your option) any later version.
  10  *
  11  * This library is distributed in the hope that it will be useful,
  12  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  13  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  14  * Lesser General Public License for more details.
  15  *
  16  * You should have received a copy of the GNU Lesser General Public
  17  * License along with this library; if not, write to the Free Software
  18  * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
  19  */
  20
  21 #include <assert.h>
  22 #include <stdarg.h>
  23 #include <stdio.h>
  24 #include <stdlib.h>
  25 #include <string.h>
  26
  27 #include "windef.h"
  28 #include "winbase.h"
  29 #include "winerror.h"
  30 #include "winnls.h"
  31 #include "wine/unicode.h"
  32 #include "thread.h"
  33 #include "wine/debug.h"
  34
  35 WINE_DEFAULT_DEBUG_CHANNEL(string);
  36
  37 /* current code pages */
  38 static const union cptable *ansi_cptable;
  39 static const union cptable *oem_cptable;
  40 static const union cptable *mac_cptable;
  41 static const union cptable *unix_cptable;  /* NULL if UTF8 */
  42 static LCID default_lcid = MAKELCID( MAKELANGID(LANG_ENGLISH,SUBLANG_DEFAULT), SORT_DEFAULT );
  43
  44 /* setup default codepage info before we can get at the locale stuff */
  45 static void init_codepages(void)
  46 {
  47     ansi_cptable = wine_cp_get_table( 1252 );
  48     oem_cptable  = wine_cp_get_table( 437 );
  49     mac_cptable  = wine_cp_get_table( 10000 );
  50     unix_cptable  = wine_cp_get_table( 28591 );
  51     assert( ansi_cptable );
  52     assert( oem_cptable );
  53     assert( mac_cptable );
  54     assert( unix_cptable );
  55 }
  56
  57 /* find the table for a given codepage, handling CP_ACP etc. pseudo-codepages */
  58 static const union cptable *get_codepage_table( unsigned int codepage )
  59 {
  60     const union cptable *ret = NULL;
  61
  62     if (!ansi_cptable) init_codepages();
  63
  64     switch(codepage)
  65     {
  66     case CP_ACP:
  67         return ansi_cptable;
  68     case CP_OEMCP:
  69         return oem_cptable;
  70     case CP_MACCP:
  71         return mac_cptable;
  72     case CP_UTF7:
  73     case CP_UTF8:
  74         break;
  75     case CP_THREAD_ACP:
  76         if (!(codepage = NtCurrentTeb()->code_page)) return ansi_cptable;
  77         /* fall through */
  78     default:
  79         if (codepage == ansi_cptable->info.codepage) return ansi_cptable;
  80         if (codepage == oem_cptable->info.codepage) return oem_cptable;
  81         if (codepage == mac_cptable->info.codepage) return mac_cptable;
  82         ret = wine_cp_get_table( codepage );
  83         break;
  84     }
  85     return ret;
  86 }
  87
  88 /* initialize default code pages from locale info */
  89 /* FIXME: should be done in init_codepages, but it can't right now */
  90 /* since it needs KERNEL32 to be loaded for the locale info. */
  91 void CODEPAGE_Init( UINT ansi_cp, UINT oem_cp, UINT mac_cp, UINT unix_cp, LCID lcid )
  92 {
  93     extern void __wine_init_codepages( const union cptable *ansi_cp, const union cptable *oem_cp );
  94     const union cptable *table;
  95
  96     default_lcid = lcid;
  97     if (!ansi_cptable) init_codepages();  /* just in case */
  98
  99     if ((table = wine_cp_get_table( ansi_cp ))) ansi_cptable = table;
 100     if ((table = wine_cp_get_table( oem_cp ))) oem_cptable = table;
 101     if ((table = wine_cp_get_table( mac_cp ))) mac_cptable = table;
 102     if (unix_cp == CP_UTF8)
 103         unix_cptable = NULL;
 104     else if ((table = wine_cp_get_table( unix_cp )))
 105         unix_cptable = table;
 106
 107     __wine_init_codepages( ansi_cptable, oem_cptable );
 108
 109     TRACE( "ansi=%03d oem=%03d mac=%03d unix=%03d\n",
 110            ansi_cptable->info.codepage, oem_cptable->info.codepage,
 111            mac_cptable->info.codepage, unix_cp );
 112 }
 113
 114 /******************************************************************************
 115  *              GetACP   (KERNEL32.@)
 116  *
 117  * RETURNS
 118  *    Current ANSI code-page identifier, default if no current defined
 119  */
 120 UINT WINAPI GetACP(void)
 121 {
 122     if (!ansi_cptable) return 1252;
 123     return ansi_cptable->info.codepage;
 124 }
 125
 126
 127 /***********************************************************************
 128  *              GetOEMCP   (KERNEL32.@)
 129  */
 130 UINT WINAPI GetOEMCP(void)
 131 {
 132     if (!oem_cptable) return 437;
 133     return oem_cptable->info.codepage;
 134 }
 135
 136
 137 /***********************************************************************
 138  *           IsValidCodePage   (KERNEL32.@)
 139  */
 140 BOOL WINAPI IsValidCodePage( UINT codepage )
 141 {
 142     switch(codepage) {
 143     case CP_SYMBOL:
 144         return FALSE;
 145     case CP_UTF7:
 146     case CP_UTF8:
 147         return TRUE;
 148     default:
 149         return wine_cp_get_table( codepage ) != NULL;
 150     }
 151 }
 152
 153
 154 /***********************************************************************
 155  *              GetUserDefaultLangID (KERNEL32.@)
 156  */
 157 LANGID WINAPI GetUserDefaultLangID(void)
 158 {
 159     return LANGIDFROMLCID(default_lcid);
 160 }
 161
 162
 163 /***********************************************************************
 164  *              GetSystemDefaultLangID (KERNEL32.@)
 165  */
 166 LANGID WINAPI GetSystemDefaultLangID(void)
 167 {
 168     return GetUserDefaultLangID();
 169 }
 170
 171
 172 /***********************************************************************
 173  *              GetUserDefaultLCID (KERNEL32.@)
 174  */
 175 LCID WINAPI GetUserDefaultLCID(void)
 176 {
 177     return default_lcid;
 178 }
 179
 180
 181 /***********************************************************************
 182  *              GetSystemDefaultLCID (KERNEL32.@)
 183  */
 184 LCID WINAPI GetSystemDefaultLCID(void)
 185 {
 186     return GetUserDefaultLCID();
 187 }
 188
 189
 190 /***********************************************************************
 191  *              GetUserDefaultUILanguage (KERNEL32.@)
 192  */
 193 LANGID WINAPI GetUserDefaultUILanguage(void)
 194 {
 195     return GetUserDefaultLangID();
 196 }
 197
 198
 199 /***********************************************************************
 200  *              GetSystemDefaultUILanguage (KERNEL32.@)
 201  */
 202 LANGID WINAPI GetSystemDefaultUILanguage(void)
 203 {
 204     return GetSystemDefaultLangID();
 205 }
 206
 207
 208 /***********************************************************************
 209  *           IsDBCSLeadByteEx   (KERNEL32.@)
 210  */
 211 BOOL WINAPI IsDBCSLeadByteEx( UINT codepage, BYTE testchar )
 212 {
 213     const union cptable *table = get_codepage_table( codepage );
 214     return table && is_dbcs_leadbyte( table, testchar );
 215 }
 216
 217
 218 /***********************************************************************
 219  *           IsDBCSLeadByte   (KERNEL32.@)
 220  *           IsDBCSLeadByte   (KERNEL.207)
 221  */
 222 BOOL WINAPI IsDBCSLeadByte( BYTE testchar )
 223 {
 224     if (!ansi_cptable) return FALSE;
 225     return is_dbcs_leadbyte( ansi_cptable, testchar );
 226 }
 227
 228
 229 /***********************************************************************
 230  *           GetCPInfo   (KERNEL32.@)
 231  */
 232 BOOL WINAPI GetCPInfo( UINT codepage, LPCPINFO cpinfo )
 233 {
 234     const union cptable *table = get_codepage_table( codepage );
 235
 236     if (!table)
 237     {
 238         SetLastError( ERROR_INVALID_PARAMETER );
 239         return FALSE;
 240     }
 241     if (table->info.def_char & 0xff00)
 242     {
 243         cpinfo->DefaultChar[0] = table->info.def_char & 0xff00;
 244         cpinfo->DefaultChar[1] = table->info.def_char & 0x00ff;
 245     }
 246     else
 247     {
 248         cpinfo->DefaultChar[0] = table->info.def_char & 0xff;
 249         cpinfo->DefaultChar[1] = 0;
 250     }
 251     if ((cpinfo->MaxCharSize = table->info.char_size) == 2)
 252         memcpy( cpinfo->LeadByte, table->dbcs.lead_bytes, sizeof(cpinfo->LeadByte) );
 253     else
 254         cpinfo->LeadByte[0] = cpinfo->LeadByte[1] = 0;
 255
 256     return TRUE;
 257 }
 258
 259
 260 /***********************************************************************
 261  *              EnumSystemCodePagesA   (KERNEL32.@)
 262  */
 263 BOOL WINAPI EnumSystemCodePagesA( CODEPAGE_ENUMPROCA lpfnCodePageEnum, DWORD flags )
 264 {
 265     const union cptable *table;
 266     char buffer[10];
 267     int index = 0;
 268
 269     for (;;)
 270     {
 271         if (!(table = wine_cp_enum_table( index++ ))) break;
 272         sprintf( buffer, "%d", table->info.codepage );
 273         if (!lpfnCodePageEnum( buffer )) break;
 274     }
 275     return TRUE;
 276 }
 277
 278
 279 /***********************************************************************
 280  *              EnumSystemCodePagesW   (KERNEL32.@)
 281  */
 282 BOOL WINAPI EnumSystemCodePagesW( CODEPAGE_ENUMPROCW lpfnCodePageEnum, DWORD flags )
 283 {
 284     const union cptable *table;
 285     WCHAR buffer[10], *p;
 286     int page, index = 0;
 287
 288     for (;;)
 289     {
 290         if (!(table = wine_cp_enum_table( index++ ))) break;
 291         p = buffer + sizeof(buffer)/sizeof(WCHAR);
 292         *--p = 0;
 293         page = table->info.codepage;
 294         do
 295         {
 296             *--p = '0' + (page % 10);
 297             page /= 10;
 298         } while( page );
 299         if (!lpfnCodePageEnum( p )) break;
 300     }
 301     return TRUE;
 302 }
 303
 304
 305 /***********************************************************************
 306  *              MultiByteToWideChar   (KERNEL32.@)
 307  *
 308  * PARAMS
 309  *   page [in]    Codepage character set to convert from
 310  *   flags [in]   Character mapping flags
 311  *   src [in]     Source string buffer
 312  *   srclen [in]  Length of source string buffer
 313  *   dst [in]     Destination buffer
 314  *   dstlen [in]  Length of destination buffer
 315  *
 316  * NOTES
 317  *   The returned length includes the null terminator character.
 318  *
 319  * RETURNS
 320  *   Success: If dstlen > 0, number of characters written to destination
 321  *            buffer.  If dstlen == 0, number of characters needed to do
 322  *            conversion.
 323  *   Failure: 0. Occurs if not enough space is available.
 324  *
 325  * ERRORS
 326  *   ERROR_INSUFFICIENT_BUFFER
 327  *   ERROR_INVALID_PARAMETER
 328  *   ERROR_NO_UNICODE_TRANSLATION
 329  *
 330  */
 331 INT WINAPI MultiByteToWideChar( UINT page, DWORD flags, LPCSTR src, INT srclen,
 332                                 LPWSTR dst, INT dstlen )
 333 {
 334     const union cptable *table;
 335     int ret;
 336
 337     if (!src || (!dst && dstlen))
 338     {
 339         SetLastError( ERROR_INVALID_PARAMETER );
 340         return 0;
 341     }
 342
 343     if (srclen < 0) srclen = strlen(src) + 1;
 344
 345     if (flags & MB_USEGLYPHCHARS) FIXME("MB_USEGLYPHCHARS not supported\n");
 346
 347     switch(page)
 348     {
 349     case CP_UTF7:
 350         FIXME("UTF-7 not supported\n");
 351         SetLastError( ERROR_CALL_NOT_IMPLEMENTED );
 352         return 0;
 353     case CP_UNIXCP:
 354         if (unix_cptable)
 355         {
 356             ret = wine_cp_mbstowcs( unix_cptable, flags, src, srclen, dst, dstlen );
 357             break;
 358         }
 359         /* fall through */
 360     case CP_UTF8:
 361         ret = wine_utf8_mbstowcs( flags, src, srclen, dst, dstlen );
 362         break;
 363     default:
 364         if (!(table = get_codepage_table( page )))
 365         {
 366             SetLastError( ERROR_INVALID_PARAMETER );
 367             return 0;
 368         }
 369         ret = wine_cp_mbstowcs( table, flags, src, srclen, dst, dstlen );
 370         break;
 371     }
 372
 373     if (ret < 0)
 374     {
 375         switch(ret)
 376         {
 377         case -1: SetLastError( ERROR_INSUFFICIENT_BUFFER ); break;
 378         case -2: SetLastError( ERROR_NO_UNICODE_TRANSLATION ); break;
 379         }
 380         ret = 0;
 381     }
 382     return ret;
 383 }
 384
 385
 386 /***********************************************************************
 387  *              WideCharToMultiByte   (KERNEL32.@)
 388  *
 389  * PARAMS
 390  *   page [in]    Codepage character set to convert to
 391  *   flags [in]   Character mapping flags
 392  *   src [in]     Source string buffer
 393  *   srclen [in]  Length of source string buffer
 394  *   dst [in]     Destination buffer
 395  *   dstlen [in]  Length of destination buffer
 396  *   defchar [in] Default character to use for conversion if no exact
 397  *                  conversion can be made
 398  *   used [out]   Set if default character was used in the conversion
 399  *
 400  * NOTES
 401  *   The returned length includes the null terminator character.
 402  *
 403  * RETURNS
 404  *   Success: If dstlen > 0, number of characters written to destination
 405  *            buffer.  If dstlen == 0, number of characters needed to do
 406  *            conversion.
 407  *   Failure: 0. Occurs if not enough space is available.
 408  *
 409  * ERRORS
 410  *   ERROR_INSUFFICIENT_BUFFER
 411  *   ERROR_INVALID_PARAMETER
 412  */
 413 INT WINAPI WideCharToMultiByte( UINT page, DWORD flags, LPCWSTR src, INT srclen,
 414                                 LPSTR dst, INT dstlen, LPCSTR defchar, BOOL *used )
 415 {
 416     const union cptable *table;
 417     int ret, used_tmp;
 418
 419     if (!src || (!dst && dstlen))
 420     {
 421         SetLastError( ERROR_INVALID_PARAMETER );
 422         return 0;
 423     }
 424
 425     if (srclen < 0) srclen = strlenW(src) + 1;
 426
 427     switch(page)
 428     {
 429     case CP_UTF7:
 430         FIXME("UTF-7 not supported\n");
 431         SetLastError( ERROR_CALL_NOT_IMPLEMENTED );
 432         return 0;
 433     case CP_UNIXCP:
 434         if (unix_cptable)
 435         {
 436             ret = wine_cp_wcstombs( unix_cptable, flags, src, srclen, dst, dstlen,
 437                                     defchar, used ? &used_tmp : NULL );
 438             break;
 439         }
 440         /* fall through */
 441     case CP_UTF8:
 442         ret = wine_utf8_wcstombs( src, srclen, dst, dstlen );
 443         break;
 444     default:
 445         if (!(table = get_codepage_table( page )))
 446         {
 447             SetLastError( ERROR_INVALID_PARAMETER );
 448             return 0;
 449         }
 450         ret = wine_cp_wcstombs( table, flags, src, srclen, dst, dstlen,
 451                                 defchar, used ? &used_tmp : NULL );
 452         if (used) *used = used_tmp;
 453         break;
 454     }
 455
 456     if (ret == -1)
 457     {
 458         SetLastError( ERROR_INSUFFICIENT_BUFFER );
 459         ret = 0;
 460     }
 461     return ret;
 462 }