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 wxChar * wxStrchr(const wxChar *s, wxChar c)
 217 {
 218   while (*s && *s != c) s++;
 219   return (*s) ? (wxChar *)s : (wxChar *)NULL;
 220 }
 221
 222 WXDLLEXPORT int wxStrcmp(const wxChar *s1, const wxChar *s2)
 223 {
 224   while ((*s1 == *s2) && *s1) s1++, s2++;
 225   if ((wxUChar)*s1 < (wxUChar)*s2) return -1;
 226   if ((wxUChar)*s1 > (wxUChar)*s2) return 1;
 227   return 0;
 228 }
 229
 230 WXDLLEXPORT wxChar * wxStrcpy(wxChar *dest, const wxChar *src)
 231 {
 232   wxChar *ret = dest;
 233   while ((*dest++ = *src++));
 234   return ret;
 235 }
 236
 237 WXDLLEXPORT wxChar * wxStrncat(wxChar *dest, const wxChar *src, size_t n)
 238 {
 239   wxChar *ret = dest;
 240   while (*dest) dest++;
 241   while (n && (*dest++ = *src++)) n--;
 242   return ret;
 243 }
 244
 245 WXDLLEXPORT int wxStrncmp(const wxChar *s1, const wxChar *s2, size_t n)
 246 {
 247   while (n && (*s1 == *s2) && *s1) n--, s1++, s2++;
 248   if (n) {
 249     if ((wxUChar)*s1 < (wxUChar)*s2) return -1;
 250     if ((wxUChar)*s1 > (wxUChar)*s2) return 1;
 251   }
 252   return 0;
 253 }
 254
 255 WXDLLEXPORT wxChar * wxStrncpy(wxChar *dest, const wxChar *src, size_t n)
 256 {
 257   wxChar *ret = dest;
 258   while (n && (*dest++ = *src++)) n--;
 259   while (n) *dest++=0, n--; // the docs specify padding with zeroes
 260   return ret;
 261 }
 262
 263 WXDLLEXPORT wxChar * wxStrpbrk(const wxChar *s, const wxChar *accept)
 264 {
 265   while (*s && !wxStrchr(accept, *s)) s++;
 266   return (*s) ? (wxChar *)s : (wxChar *)NULL;
 267 }
 268
 269 WXDLLEXPORT wxChar * wxStrrchr(const wxChar *s, wxChar c)
 270 {
 271   wxChar *ret = (wxChar *)NULL;
 272   while (*s) {
 273     if (*s == c) ret = (wxChar *)s;
 274     s++;
 275   }
 276   return ret;
 277 }
 278
 279 WXDLLEXPORT size_t wxStrspn(const wxChar *s, const wxChar *accept)
 280 {
 281   size_t len = 0;
 282   while (wxStrchr(accept, *s++)) len++;
 283   return len;
 284 }
 285
 286 WXDLLEXPORT wxChar * wxStrstr(const wxChar *haystack, const wxChar *needle)
 287 {
 288     wxCHECK_RET( needle, NULL, _T("NULL argument in wxStrstr") );
 289
 290     const size_t len = wxStrlen(needle);
 291
 292     wxChar *fnd;
 293     while ( (fnd = wxStrchr(haystack, *needle)) )
 294     {
 295         if ( !wxStrncmp(fnd, needle, len) )
 296             return fnd;
 297
 298         haystack = fnd + 1;
 299     }
 300
 301     return (wxChar *)NULL;
 302 }
 303
 304 WXDLLEXPORT double wxStrtod(const wxChar *nptr, wxChar **endptr)
 305 {
 306   const wxChar *start = nptr;
 307
 308   // FIXME: only correct for C locale
 309   while (wxIsspace(*nptr)) nptr++;
 310   if (*nptr == wxT('+') || *nptr == wxT('-')) nptr++;
 311   while (wxIsdigit(*nptr)) nptr++;
 312   if (*nptr == wxT('.')) {
 313     nptr++;
 314     while (wxIsdigit(*nptr)) nptr++;
 315   }
 316   if (*nptr == wxT('E') || *nptr == wxT('e')) {
 317     nptr++;
 318     if (*nptr == wxT('+') || *nptr == wxT('-')) nptr++;
 319     while (wxIsdigit(*nptr)) nptr++;
 320   }
 321
 322   wxString data(nptr, nptr-start);
 323   wxWX2MBbuf dat = data.mb_str(wxConvLibc);
 324   char *rdat = wxMBSTRINGCAST dat;
 325   double ret = strtod(dat, &rdat);
 326
 327   if (endptr) *endptr = (wxChar *)(start + (rdat - (const char *)dat));
 328
 329   return ret;
 330 }
 331
 332 WXDLLEXPORT long int wxStrtol(const wxChar *nptr, wxChar **endptr, int base)
 333 {
 334   const wxChar *start = nptr;
 335
 336   // FIXME: only correct for C locale
 337   while (wxIsspace(*nptr)) nptr++;
 338   if (*nptr == wxT('+') || *nptr == wxT('-')) nptr++;
 339   if (((base == 0) || (base == 16)) &&
 340       (nptr[0] == wxT('0') && nptr[1] == wxT('x'))) {
 341     nptr += 2;
 342     base = 16;
 343   }
 344   else if ((base == 0) && (nptr[0] == wxT('0'))) base = 8;
 345   else if (base == 0) base = 10;
 346
 347   while ((wxIsdigit(*nptr) && (*nptr - wxT('0') < base)) ||
 348          (wxIsalpha(*nptr) && (wxToupper(*nptr) - wxT('A') + 10 < base))) nptr++;
 349
 350   wxString data(nptr, nptr-start);
 351   wxWX2MBbuf dat = data.mb_str(wxConvLibc);
 352   char *rdat = wxMBSTRINGCAST dat;
 353   long int ret = strtol(dat, &rdat, base);
 354
 355   if (endptr) *endptr = (wxChar *)(start + (rdat - (const char *)dat));
 356
 357   return ret;
 358 }
 359 #endif
 360
 361 #ifdef wxNEED_WX_STDIO_H
 362 WXDLLEXPORT FILE * wxFopen(const wxChar *path, const wxChar *mode)
 363 {
 364   return fopen(wxConvFile.cWX2MB(path), wxConvLibc.cWX2MB(mode));
 365 }
 366
 367 WXDLLEXPORT FILE * wxFreopen(const wxChar *path, const wxChar *mode, FILE *stream)
 368 {
 369   return freopen(wxConvFile.cWX2MB(path), wxConvLibc.cWX2MB(mode), stream);
 370 }
 371
 372 WXDLLEXPORT int wxRemove(const wxChar *path)
 373 {
 374   return remove(wxConvFile.cWX2MB(path));
 375 }
 376
 377 WXDLLEXPORT int wxRename(const wxChar *oldpath, const wxChar *newpath)
 378 {
 379   return rename(wxConvFile.cWX2MB(oldpath), wxConvFile.cWX2MB(newpath));
 380 }
 381
 382 int WXDLLEXPORT wxPrintf(const wxChar *fmt, ...)
 383 {
 384   va_list argptr;
 385   int ret;
 386
 387   va_start(argptr, fmt);
 388   ret = wxVprintf(fmt, argptr);
 389   va_end(argptr);
 390   return ret;
 391 }
 392
 393 int WXDLLEXPORT wxVprintf(const wxChar *fmt, va_list argptr)
 394 {
 395   wxString str;
 396   str.PrintfV(fmt,argptr);
 397   printf("%s", (const char*)str.mb_str());
 398   return str.Len();
 399 }
 400
 401 int WXDLLEXPORT wxFprintf(FILE *stream, const wxChar *fmt, ...)
 402 {
 403   va_list argptr;
 404   int ret;
 405
 406   va_start(argptr, fmt);
 407   ret = wxVfprintf(stream, fmt, argptr);
 408   va_end(argptr);
 409   return ret;
 410 }
 411
 412 int WXDLLEXPORT wxVfprintf(FILE *stream, const wxChar *fmt, va_list argptr)
 413 {
 414   wxString str;
 415   str.PrintfV(fmt,argptr);
 416   fprintf(stream, "%s", (const char*)str.mb_str());
 417   return str.Len();
 418 }
 419
 420 int WXDLLEXPORT wxSprintf(wxChar *buf, const wxChar *fmt, ...)
 421 {
 422   va_list argptr;
 423   int ret;
 424
 425   va_start(argptr, fmt);
 426   ret = wxVsprintf(buf, fmt, argptr);
 427   va_end(argptr);
 428   return ret;
 429 }
 430
 431 int WXDLLEXPORT wxVsprintf(wxChar *buf, const wxChar *fmt, va_list argptr)
 432 {
 433   // this might be sort of inefficient, but it doesn't matter since
 434   // we'd prefer people to use wxString::Printf directly instead anyway
 435   wxString str;
 436   str.PrintfV(fmt,argptr);
 437   wxStrcpy(buf,str.c_str());
 438   return str.Len();
 439 }
 440
 441 int WXDLLEXPORT wxSscanf(const wxChar *buf, const wxChar *fmt, ...)
 442 {
 443   va_list argptr;
 444   int ret;
 445
 446   va_start(argptr, fmt);
 447   ret = wxVsscanf(buf, fmt, argptr);
 448   va_end(argptr);
 449   return ret;
 450 }
 451
 452 int WXDLLEXPORT wxVsscanf(const wxChar *buf, const wxChar *fmt, va_list argptr)
 453 {
 454   int ret;
 455   // this will work only for numeric conversion! Strings will not be converted correctly
 456   // hopefully this is all we'll need
 457   ret = vsscanf(wxConvLibc.cWX2MB(buf), wxConvLibc.cWX2MB(fmt), argptr);
 458   return ret;
 459 }
 460 #endif
 461
 462 #ifndef wxAtof
 463 double   WXDLLEXPORT wxAtof(const wxChar *psz)
 464 {
 465   return atof(wxConvLibc.cWX2MB(psz));
 466 }
 467 #endif
 468
 469 #ifdef wxNEED_WX_STDLIB_H
 470 int      WXDLLEXPORT wxAtoi(const wxChar *psz)
 471 {
 472   return atoi(wxConvLibc.cWX2MB(psz));
 473 }
 474
 475 long     WXDLLEXPORT wxAtol(const wxChar *psz)
 476 {
 477   return atol(wxConvLibc.cWX2MB(psz));
 478 }
 479
 480 wxChar * WXDLLEXPORT wxGetenv(const wxChar *name)
 481 {
 482   static wxHashTable env;
 483   // check if we already have stored the converted env var
 484   wxObject *data = env.Get(name);
 485   if (!data) {
 486     // nope, retrieve it,
 487     const char *val = getenv(wxConvLibc.cWX2MB(name));
 488     if (!val) return (wxChar *)NULL;
 489     // convert it,
 490     data = (wxObject *)new wxString(val);
 491     // and store it
 492     env.Put(name, data);
 493   }
 494   // return converted env var
 495   return (wxChar *)((wxString *)data)->c_str();
 496 }
 497
 498 int      WXDLLEXPORT wxSystem(const wxChar *psz)
 499 {
 500   return system(wxConvLibc.cWX2MB(psz));
 501 }
 502
 503 #endif
 504
 505 #ifdef wxNEED_WX_TIME_H
 506 WXDLLEXPORT size_t   wxStrftime(wxChar *s, size_t max, const wxChar *fmt, const struct tm *tm)
 507 {
 508   if (!max) return 0;
 509   char *buf = (char *)malloc(max);
 510   size_t ret = strftime(buf, max, wxConvLibc.cWX2MB(fmt), tm);
 511   if (ret) {
 512     wxStrcpy(s, wxConvLibc.cMB2WX(buf));
 513     free(buf);
 514     return wxStrlen(s);
 515   } else {
 516     free(buf);
 517     *s = 0;
 518     return 0;
 519   }
 520 }
 521 #endif