src/common/wxchar.cpp

   1 /////////////////////////////////////////////////////////////////////////////
   2 // Name:        wxchar.cpp
   3 // Purpose:     wxChar implementation
   4 // Author:      Ove Kåven
   5 // Modified by:
   6 // Created:     09/04/99
   7 // RCS-ID:      $Id$
   8 // Copyright:   (c) wxWindows copyright
   9 // Licence:     wxWindows license
  10 /////////////////////////////////////////////////////////////////////////////
  11
  12 #ifdef __GNUG__
  13   #pragma implementation "wxchar.h"
  14 #endif
  15
  16 // ===========================================================================
  17 // headers, declarations, constants
  18 // ===========================================================================
  19
  20 // For compilers that support precompilation, includes "wx.h".
  21 #include "wx/wxprec.h"
  22
  23 #ifdef __BORLANDC__
  24   #pragma hdrstop
  25 #endif
  26
  27 #define _ISOC9X_SOURCE 1 // to get vsscanf()
  28 #define _BSD_SOURCE    1 // to still get strdup()
  29
  30 #include <stdio.h>
  31 #include <stdlib.h>
  32 #include <string.h>
  33 #include <locale.h>
  34 #include <time.h>
  35
  36 #ifndef WX_PRECOMP
  37   #include "wx/defs.h"
  38   #include "wx/wxchar.h"
  39   #include "wx/string.h"
  40   #include "wx/hash.h"
  41 #endif
  42
  43 #if defined(__WIN32__) && defined(wxNEED_WX_CTYPE_H)
  44   #include <windef.h>
  45   #include <winbase.h>
  46   #include <winnls.h>
  47   #include <winnt.h>
  48 #endif
  49
  50 #if wxUSE_WCHAR_T
  51 size_t WXDLLEXPORT wxMB2WC(wchar_t *buf, const char *psz, size_t n)
  52 {
  53   if (buf) {
  54     if (!n || !*psz) {
  55       if (n) *buf = wxT('\0');
  56       return 0;
  57     }
  58     return mbstowcs(buf, psz, n);
  59   }
  60
  61   // assume that we have mbsrtowcs() too if we have wcsrtombs()
  62 #ifdef HAVE_WCSRTOMBS
  63   mbstate_t mbstate;
  64   return mbsrtowcs((wchar_t *) NULL, &psz, 0, &mbstate);
  65 #else  // !GNU libc
  66   return mbstowcs((wchar_t *) NULL, psz, 0);
  67 #endif // GNU
  68 }
  69
  70 size_t WXDLLEXPORT wxWC2MB(char *buf, const wchar_t *pwz, size_t n)
  71 {
  72   if (buf) {
  73     if (!n || !*pwz) {
  74       // glibc2.1 chokes on null input
  75       if (n) *buf = '\0';
  76       return 0;
  77     }
  78     return wcstombs(buf, pwz, n);
  79   }
  80
  81 #if HAVE_WCSRTOMBS
  82   mbstate_t mbstate;
  83   return wcsrtombs((char *) NULL, &pwz, 0, &mbstate);
  84 #else  // !GNU libc
  85   return wcstombs((char *) NULL, pwz, 0);
  86 #endif // GNU
  87 }
  88 #endif // wxUSE_WCHAR_T
  89
  90 bool WXDLLEXPORT wxOKlibc()
  91 {
  92 #if wxUSE_WCHAR_T && defined(__UNIX__) && defined(__GLIBC__)
  93   // glibc 2.0 uses UTF-8 even when it shouldn't
  94   wchar_t res = 0;
  95   if ((MB_CUR_MAX == 2) &&
  96       (wxMB2WC(&res, "\xdd\xa5", 1) == 1) &&
  97       (res==0x765)) {
  98     // this is UTF-8 allright, check whether that's what we want
  99     char *cur_locale = setlocale(LC_CTYPE, NULL);
 100     if ((strlen(cur_locale) < 4) ||
 101         (strcasecmp(cur_locale + strlen(cur_locale) - 4, "utf8")) ||
 102         (strcasecmp(cur_locale + strlen(cur_locale) - 5, "utf-8"))) {
 103       // nope, don't use libc conversion
 104       return FALSE;
 105     }
 106   }
 107 #endif
 108   return TRUE;
 109 }
 110
 111 #ifndef HAVE_WCSLEN
 112 size_t   WXDLLEXPORT wcslen(const wchar_t *s)
 113 {
 114   size_t len = 0;
 115   while (s[len]) len++;
 116   return len;
 117 }
 118 #endif
 119
 120 #if defined(__WIN32__) && defined(wxNEED_WX_CTYPE_H)
 121 inline WORD wxMSW_ctype(wxChar ch)
 122 {
 123   WORD ret;
 124   GetStringTypeEx(LOCALE_USER_DEFAULT, CT_CTYPE1, &ch, 1, &ret);
 125   return ret;
 126 }
 127
 128 WXDLLEXPORT int wxIsalnum(wxChar ch) { return IsCharAlphaNumeric(ch); }
 129 WXDLLEXPORT int wxIsalpha(wxChar ch) { return IsCharAlpha(ch); }
 130 WXDLLEXPORT int wxIsctrl(wxChar ch) { return wxMSW_ctype(ch) & C1_CNTRL; }
 131 WXDLLEXPORT int wxIsdigit(wxChar ch) { return wxMSW_ctype(ch) & C1_DIGIT; }
 132 WXDLLEXPORT int wxIsgraph(wxChar ch) { return wxMSW_ctype(ch) & (C1_DIGIT|C1_PUNCT|C1_ALPHA); }
 133 WXDLLEXPORT int wxIslower(wxChar ch) { return IsCharLower(ch); }
 134 WXDLLEXPORT int wxIsprint(wxChar ch) { return wxMSW_ctype(ch) & (C1_DIGIT|C1_SPACE|C1_PUNCT|C1_ALPHA); }
 135 WXDLLEXPORT int wxIspunct(wxChar ch) { return wxMSW_ctype(ch) & C1_PUNCT; }
 136 WXDLLEXPORT int wxIsspace(wxChar ch) { return wxMSW_ctype(ch) & C1_SPACE; }
 137 WXDLLEXPORT int wxIsupper(wxChar ch) { return IsCharUpper(ch); }
 138 WXDLLEXPORT int wxIsxdigit(wxChar ch) { return wxMSW_ctype(ch) & C1_XDIGIT; }
 139 WXDLLEXPORT int wxTolower(wxChar ch) { return (wxChar)CharLower((LPTSTR)(ch)); }
 140 WXDLLEXPORT int wxToupper(wxChar ch) { return (wxChar)CharUpper((LPTSTR)(ch)); }
 141 #endif
 142
 143 #ifndef wxStrdup
 144 WXDLLEXPORT wxChar * wxStrdup(const wxChar *psz)
 145 {
 146   size_t size = (wxStrlen(psz) + 1) * sizeof(wxChar);
 147   wxChar *ret = (wxChar *) malloc(size);
 148   memcpy(ret, psz, size);
 149   return ret;
 150 }
 151 #endif
 152
 153 #ifndef wxStricmp
 154 int WXDLLEXPORT wxStricmp(const wxChar *psz1, const wxChar *psz2)
 155 {
 156   register wxChar c1, c2;
 157   do {
 158     c1 = wxTolower(*psz1++);
 159     c2 = wxTolower(*psz2++);
 160   } while ( c1 && (c1 == c2) );
 161   return c1 - c2;
 162 }
 163 #endif
 164
 165 #ifndef wxStricmp
 166 int WXDLLEXPORT wxStrnicmp(const wxChar *s1, const wxChar *s2, size_t n)
 167 {
 168   register wxChar c1, c2;
 169   while (n && ((c1 = wxTolower(*s1)) == (c2 = wxTolower(*s2)) ) && c1) n--, s1++, s2++;
 170   if (n) {
 171     if (c1 < c2) return -1;
 172     if (c1 > c2) return 1;
 173   }
 174   return 0;
 175 }
 176 #endif
 177
 178 #ifndef wxStrtok
 179 WXDLLEXPORT wxChar * wxStrtok(wxChar *psz, const wxChar *delim, wxChar **save_ptr)
 180 {
 181   if (!psz) psz = *save_ptr;
 182   psz += wxStrspn(psz, delim);
 183   if (!*psz) {
 184     *save_ptr = (wxChar *)NULL;
 185     return (wxChar *)NULL;
 186   }
 187   wxChar *ret = psz;
 188   psz = wxStrpbrk(psz, delim);
 189   if (!psz) *save_ptr = (wxChar*)NULL;
 190   else {
 191     *psz = wxT('\0');
 192     *save_ptr = psz + 1;
 193   }
 194   return ret;
 195 }
 196 #endif
 197
 198 #ifndef wxSetlocale
 199 WXDLLEXPORT wxWCharBuffer wxSetlocale(int category, const wxChar *locale)
 200 {
 201     char *localeOld = setlocale(category, wxConvLibc.cWX2MB(locale));
 202
 203     return wxWCharBuffer(wxConvLibc.cMB2WC(localeOld));
 204 }
 205 #endif
 206
 207 #ifdef wxNEED_WX_STRING_H
 208 WXDLLEXPORT wxChar * wxStrcat(wxChar *dest, const wxChar *src)
 209 {
 210   wxChar *ret = dest;
 211   while (*dest) dest++;
 212   while ((*dest++ = *src++));
 213   return ret;
 214 }
 215
 216 WXDLLEXPORT const wxChar * wxStrchr(const wxChar *s, wxChar c)
 217 {
 218     // be careful here as the terminating NUL makes part of the string
 219     while ( *s != c )
 220     {
 221         if ( !*s++ )
 222             return NULL;
 223     }
 224
 225     return s;
 226 }
 227
 228 WXDLLEXPORT int wxStrcmp(const wxChar *s1, const wxChar *s2)
 229 {
 230   while ((*s1 == *s2) && *s1) s1++, s2++;
 231   if ((wxUChar)*s1 < (wxUChar)*s2) return -1;
 232   if ((wxUChar)*s1 > (wxUChar)*s2) return 1;
 233   return 0;
 234 }
 235
 236 WXDLLEXPORT wxChar * wxStrcpy(wxChar *dest, const wxChar *src)
 237 {
 238   wxChar *ret = dest;
 239   while ((*dest++ = *src++));
 240   return ret;
 241 }
 242
 243 WXDLLEXPORT wxChar * wxStrncat(wxChar *dest, const wxChar *src, size_t n)
 244 {
 245   wxChar *ret = dest;
 246   while (*dest) dest++;
 247   while (n && (*dest++ = *src++)) n--;
 248   return ret;
 249 }
 250
 251 WXDLLEXPORT int wxStrncmp(const wxChar *s1, const wxChar *s2, size_t n)
 252 {
 253   while (n && (*s1 == *s2) && *s1) n--, s1++, s2++;
 254   if (n) {
 255     if ((wxUChar)*s1 < (wxUChar)*s2) return -1;
 256     if ((wxUChar)*s1 > (wxUChar)*s2) return 1;
 257   }
 258   return 0;
 259 }
 260
 261 WXDLLEXPORT wxChar * wxStrncpy(wxChar *dest, const wxChar *src, size_t n)
 262 {
 263   wxChar *ret = dest;
 264   while (n && (*dest++ = *src++)) n--;
 265   while (n) *dest++=0, n--; // the docs specify padding with zeroes
 266   return ret;
 267 }
 268
 269 WXDLLEXPORT const wxChar * wxStrpbrk(const wxChar *s, const wxChar *accept)
 270 {
 271   while (*s && !wxStrchr(accept, *s))
 272       s++;
 273
 274   return *s ? s : NULL;
 275 }
 276
 277 WXDLLEXPORT const wxChar * wxStrrchr(const wxChar *s, wxChar c)
 278 {
 279     const wxChar *ret = NULL;
 280     do
 281     {
 282         if ( *s == c )
 283             ret = s;
 284         s++;
 285     }
 286     while ( *s );
 287
 288     return ret;
 289 }
 290
 291 WXDLLEXPORT size_t wxStrspn(const wxChar *s, const wxChar *accept)
 292 {
 293   size_t len = 0;
 294   while (wxStrchr(accept, *s++)) len++;
 295   return len;
 296 }
 297
 298 WXDLLEXPORT const wxChar *wxStrstr(const wxChar *haystack, const wxChar *needle)
 299 {
 300     wxCHECK_RET( needle, NULL, _T("NULL argument in wxStrstr") );
 301
 302     // VZ: this is not exactly the most efficient string search algorithm...
 303
 304     const size_t len = wxStrlen(needle);
 305
 306     while ( const wxChar *fnd = wxStrchr(haystack, *needle) )
 307     {
 308         if ( !wxStrncmp(fnd, needle, len) )
 309             return fnd;
 310
 311         haystack = fnd + 1;
 312     }
 313
 314     return NULL;
 315 }
 316
 317 WXDLLEXPORT double wxStrtod(const wxChar *nptr, wxChar **endptr)
 318 {
 319   const wxChar *start = nptr;
 320
 321   // FIXME: only correct for C locale
 322   while (wxIsspace(*nptr)) nptr++;
 323   if (*nptr == wxT('+') || *nptr == wxT('-')) nptr++;
 324   while (wxIsdigit(*nptr)) nptr++;
 325   if (*nptr == wxT('.')) {
 326     nptr++;
 327     while (wxIsdigit(*nptr)) nptr++;
 328   }
 329   if (*nptr == wxT('E') || *nptr == wxT('e')) {
 330     nptr++;
 331     if (*nptr == wxT('+') || *nptr == wxT('-')) nptr++;
 332     while (wxIsdigit(*nptr)) nptr++;
 333   }
 334
 335   wxString data(nptr, nptr-start);
 336   wxWX2MBbuf dat = data.mb_str(wxConvLibc);
 337   char *rdat = wxMBSTRINGCAST dat;
 338   double ret = strtod(dat, &rdat);
 339
 340   if (endptr) *endptr = (wxChar *)(start + (rdat - (const char *)dat));
 341
 342   return ret;
 343 }
 344
 345 WXDLLEXPORT long int wxStrtol(const wxChar *nptr, wxChar **endptr, int base)
 346 {
 347   const wxChar *start = nptr;
 348
 349   // FIXME: only correct for C locale
 350   while (wxIsspace(*nptr)) nptr++;
 351   if (*nptr == wxT('+') || *nptr == wxT('-')) nptr++;
 352   if (((base == 0) || (base == 16)) &&
 353       (nptr[0] == wxT('0') && nptr[1] == wxT('x'))) {
 354     nptr += 2;
 355     base = 16;
 356   }
 357   else if ((base == 0) && (nptr[0] == wxT('0'))) base = 8;
 358   else if (base == 0) base = 10;
 359
 360   while ((wxIsdigit(*nptr) && (*nptr - wxT('0') < base)) ||
 361          (wxIsalpha(*nptr) && (wxToupper(*nptr) - wxT('A') + 10 < base))) nptr++;
 362
 363   wxString data(nptr, nptr-start);
 364   wxWX2MBbuf dat = data.mb_str(wxConvLibc);
 365   char *rdat = wxMBSTRINGCAST dat;
 366   long int ret = strtol(dat, &rdat, base);
 367
 368   if (endptr) *endptr = (wxChar *)(start + (rdat - (const char *)dat));
 369
 370   return ret;
 371 }
 372 #endif
 373
 374 #ifdef wxNEED_WX_STDIO_H
 375 WXDLLEXPORT FILE * wxFopen(const wxChar *path, const wxChar *mode)
 376 {
 377   return fopen(wxConvFile.cWX2MB(path), wxConvLibc.cWX2MB(mode));
 378 }
 379
 380 WXDLLEXPORT FILE * wxFreopen(const wxChar *path, const wxChar *mode, FILE *stream)
 381 {
 382   return freopen(wxConvFile.cWX2MB(path), wxConvLibc.cWX2MB(mode), stream);
 383 }
 384
 385 WXDLLEXPORT int wxRemove(const wxChar *path)
 386 {
 387   return remove(wxConvFile.cWX2MB(path));
 388 }
 389
 390 WXDLLEXPORT int wxRename(const wxChar *oldpath, const wxChar *newpath)
 391 {
 392   return rename(wxConvFile.cWX2MB(oldpath), wxConvFile.cWX2MB(newpath));
 393 }
 394
 395 int WXDLLEXPORT wxPrintf(const wxChar *fmt, ...)
 396 {
 397   va_list argptr;
 398   int ret;
 399
 400   va_start(argptr, fmt);
 401   ret = wxVprintf(fmt, argptr);
 402   va_end(argptr);
 403   return ret;
 404 }
 405
 406 int WXDLLEXPORT wxVprintf(const wxChar *fmt, va_list argptr)
 407 {
 408   wxString str;
 409   str.PrintfV(fmt,argptr);
 410   printf("%s", (const char*)str.mb_str());
 411   return str.Len();
 412 }
 413
 414 int WXDLLEXPORT wxFprintf(FILE *stream, const wxChar *fmt, ...)
 415 {
 416   va_list argptr;
 417   int ret;
 418
 419   va_start(argptr, fmt);
 420   ret = wxVfprintf(stream, fmt, argptr);
 421   va_end(argptr);
 422   return ret;
 423 }
 424
 425 int WXDLLEXPORT wxVfprintf(FILE *stream, const wxChar *fmt, va_list argptr)
 426 {
 427   wxString str;
 428   str.PrintfV(fmt,argptr);
 429   fprintf(stream, "%s", (const char*)str.mb_str());
 430   return str.Len();
 431 }
 432
 433 int WXDLLEXPORT wxSprintf(wxChar *buf, const wxChar *fmt, ...)
 434 {
 435   va_list argptr;
 436   int ret;
 437
 438   va_start(argptr, fmt);
 439   ret = wxVsprintf(buf, fmt, argptr);
 440   va_end(argptr);
 441   return ret;
 442 }
 443
 444 int WXDLLEXPORT wxVsprintf(wxChar *buf, const wxChar *fmt, va_list argptr)
 445 {
 446   // this might be sort of inefficient, but it doesn't matter since
 447   // we'd prefer people to use wxString::Printf directly instead anyway
 448   wxString str;
 449   str.PrintfV(fmt,argptr);
 450   wxStrcpy(buf,str.c_str());
 451   return str.Len();
 452 }
 453
 454 int WXDLLEXPORT wxSscanf(const wxChar *buf, const wxChar *fmt, ...)
 455 {
 456   va_list argptr;
 457   int ret;
 458
 459   va_start(argptr, fmt);
 460   ret = wxVsscanf(buf, fmt, argptr);
 461   va_end(argptr);
 462   return ret;
 463 }
 464
 465 int WXDLLEXPORT wxVsscanf(const wxChar *buf, const wxChar *fmt, va_list argptr)
 466 {
 467   int ret;
 468   // this will work only for numeric conversion! Strings will not be converted correctly
 469   // hopefully this is all we'll need
 470   ret = vsscanf(wxConvLibc.cWX2MB(buf), wxConvLibc.cWX2MB(fmt), argptr);
 471   return ret;
 472 }
 473 #endif
 474
 475 #ifndef wxAtof
 476 double   WXDLLEXPORT wxAtof(const wxChar *psz)
 477 {
 478   return atof(wxConvLibc.cWX2MB(psz));
 479 }
 480 #endif
 481
 482 #ifdef wxNEED_WX_STDLIB_H
 483 int      WXDLLEXPORT wxAtoi(const wxChar *psz)
 484 {
 485   return atoi(wxConvLibc.cWX2MB(psz));
 486 }
 487
 488 long     WXDLLEXPORT wxAtol(const wxChar *psz)
 489 {
 490   return atol(wxConvLibc.cWX2MB(psz));
 491 }
 492
 493 wxChar * WXDLLEXPORT wxGetenv(const wxChar *name)
 494 {
 495   static wxHashTable env;
 496   // check if we already have stored the converted env var
 497   wxObject *data = env.Get(name);
 498   if (!data) {
 499     // nope, retrieve it,
 500     const char *val = getenv(wxConvLibc.cWX2MB(name));
 501     if (!val) return (wxChar *)NULL;
 502     // convert it,
 503     data = (wxObject *)new wxString(val);
 504     // and store it
 505     env.Put(name, data);
 506   }
 507   // return converted env var
 508   return (wxChar *)((wxString *)data)->c_str();
 509 }
 510
 511 int      WXDLLEXPORT wxSystem(const wxChar *psz)
 512 {
 513   return system(wxConvLibc.cWX2MB(psz));
 514 }
 515
 516 #endif
 517
 518 #ifdef wxNEED_WX_TIME_H
 519 WXDLLEXPORT size_t   wxStrftime(wxChar *s, size_t max, const wxChar *fmt, const struct tm *tm)
 520 {
 521   if (!max) return 0;
 522   char *buf = (char *)malloc(max);
 523   size_t ret = strftime(buf, max, wxConvLibc.cWX2MB(fmt), tm);
 524   if (ret) {
 525     wxStrcpy(s, wxConvLibc.cMB2WX(buf));
 526     free(buf);
 527     return wxStrlen(s);
 528   } else {
 529     free(buf);
 530     *s = 0;
 531     return 0;
 532   }
 533 }
 534 #endif