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   // NB: GNU libc5 wcstombs() is completely broken, don't use it (it doesn't
  62   //     honor the 3rd parameter, thus it will happily crash here).
  63 #if wxUSE_WCSRTOMBS
  64   // don't know if it's really needed (or if we can pass NULL), but better safe
  65   // than quick
  66   mbstate_t mbstate;
  67   return mbsrtowcs((wchar_t *) NULL, &psz, 0, &mbstate);
  68 #else  // !GNU libc
  69   return mbstowcs((wchar_t *) NULL, psz, 0);
  70 #endif // GNU
  71 }
  72
  73 size_t WXDLLEXPORT wxWC2MB(char *buf, const wchar_t *pwz, size_t n)
  74 {
  75   if (buf) {
  76     if (!n || !*pwz) {
  77       // glibc2.1 chokes on null input
  78       if (n) *buf = '\0';
  79       return 0;
  80     }
  81     return wcstombs(buf, pwz, n);
  82   }
  83
  84   // NB: GNU libc5 wcstombs() is completely broken, don't use it (it doesn't
  85   //     honor the 3rd parameter, thus it will happily crash here).
  86 #if wxUSE_WCSRTOMBS
  87   // don't know if it's really needed (or if we can pass NULL), but better safe
  88   // than quick
  89   mbstate_t mbstate;
  90   return wcsrtombs((char *) NULL, &pwz, 0, &mbstate);
  91 #else  // !GNU libc
  92   return wcstombs((char *) NULL, pwz, 0);
  93 #endif // GNU
  94 }
  95 #endif
  96
  97 bool WXDLLEXPORT wxOKlibc()
  98 {
  99 #if wxUSE_WCHAR_T && defined(__UNIX__) && defined(__GLIBC__)
 100   // GNU libc uses UTF-8 even when it shouldn't
 101   wchar_t res;
 102   if ((MB_CUR_MAX == 2) &&
 103       (wxMB2WC(&res, "\xdd\xa5", 1)>0) &&
 104       (res==0x765)) {
 105     // this is UTF-8 allright, check whether that's what we want
 106     char *cur_locale = setlocale(LC_ALL, NULL);
 107     if ((strlen(cur_locale) < 4) ||
 108         (strcasecmp(cur_locale + strlen(cur_locale) - 4, "utf8"))) {
 109       // nope, don't use libc conversion
 110       return FALSE;
 111     }
 112   }
 113 #endif
 114   return TRUE;
 115 }
 116
 117 #ifndef HAVE_WCSLEN
 118 size_t   WXDLLEXPORT wcslen(const wchar_t *s)
 119 {
 120   size_t len = 0;
 121   while (s[len]) len++;
 122   return len;
 123 }
 124 #endif
 125
 126 #if defined(__WIN32__) && defined(wxNEED_WX_CTYPE_H)
 127 inline WORD wxMSW_ctype(wxChar ch)
 128 {
 129   WORD ret;
 130   GetStringTypeEx(LOCALE_USER_DEFAULT, CT_CTYPE1, &ch, 1, &ret);
 131   return ret;
 132 }
 133
 134 WXDLLEXPORT int wxIsalnum(wxChar ch) { return IsCharAlphaNumeric(ch); }
 135 WXDLLEXPORT int wxIsalpha(wxChar ch) { return IsCharAlpha(ch); }
 136 WXDLLEXPORT int wxIsctrl(wxChar ch) { return wxMSW_ctype(ch) & C1_CNTRL; }
 137 WXDLLEXPORT int wxIsdigit(wxChar ch) { return wxMSW_ctype(ch) & C1_DIGIT; }
 138 WXDLLEXPORT int wxIsgraph(wxChar ch) { return wxMSW_ctype(ch) & (C1_DIGIT|C1_PUNCT|C1_ALPHA); }
 139 WXDLLEXPORT int wxIslower(wxChar ch) { return IsCharLower(ch); }
 140 WXDLLEXPORT int wxIsprint(wxChar ch) { return wxMSW_ctype(ch) & (C1_DIGIT|C1_SPACE|C1_PUNCT|C1_ALPHA); }
 141 WXDLLEXPORT int wxIspunct(wxChar ch) { return wxMSW_ctype(ch) & C1_PUNCT; }
 142 WXDLLEXPORT int wxIsspace(wxChar ch) { return wxMSW_ctype(ch) & C1_SPACE; }
 143 WXDLLEXPORT int wxIsupper(wxChar ch) { return IsCharUpper(ch); }
 144 WXDLLEXPORT int wxIsxdigit(wxChar ch) { return wxMSW_ctype(ch) & C1_XDIGIT; }
 145 WXDLLEXPORT int wxTolower(wxChar ch) { return (wxChar)CharLower((LPTSTR)(ch)); }
 146 WXDLLEXPORT int wxToupper(wxChar ch) { return (wxChar)CharUpper((LPTSTR)(ch)); }
 147 #endif
 148
 149 #ifndef wxStrdup
 150 WXDLLEXPORT wxChar * wxStrdup(const wxChar *psz)
 151 {
 152   size_t size = (wxStrlen(psz) + 1) * sizeof(wxChar);
 153   wxChar *ret = (wxChar *) malloc(size);
 154   memcpy(ret, psz, size);
 155   return ret;
 156 }
 157 #endif
 158
 159 #ifndef wxStricmp
 160 int WXDLLEXPORT wxStricmp(const wxChar *psz1, const wxChar *psz2)
 161 {
 162   register wxChar c1, c2;
 163   do {
 164     c1 = wxTolower(*psz1++);
 165     c2 = wxTolower(*psz2++);
 166   } while ( c1 && (c1 == c2) );
 167   return c1 - c2;
 168 }
 169 #endif
 170
 171 #ifndef wxStrtok
 172 WXDLLEXPORT wxChar * wxStrtok(wxChar *psz, const wxChar *delim, wxChar **save_ptr)
 173 {
 174   if (!psz) psz = *save_ptr;
 175   psz += wxStrspn(psz, delim);
 176   if (!*psz) {
 177     *save_ptr = (wxChar *)NULL;
 178     return (wxChar *)NULL;
 179   }
 180   wxChar *ret = psz;
 181   psz = wxStrpbrk(psz, delim);
 182   if (!psz) *save_ptr = (wxChar*)NULL;
 183   else {
 184     *psz = wxT('\0');
 185     *save_ptr = psz + 1;
 186   }
 187   return ret;
 188 }
 189 #endif
 190
 191 #ifndef wxSetlocale
 192 WXDLLEXPORT wxWCharBuffer wxSetlocale(int category, const wxChar *locale)
 193 {
 194     char *localeOld = setlocale(category, wxConvLibc.cWX2MB(locale));
 195
 196     return wxWCharBuffer(wxConvLibc.cMB2WC(localeOld));
 197 }
 198 #endif
 199
 200 #ifdef wxNEED_WX_STRING_H
 201 WXDLLEXPORT wxChar * wxStrcat(wxChar *dest, const wxChar *src)
 202 {
 203   wxChar *ret = dest;
 204   while (*dest) dest++;
 205   while ((*dest++ = *src++));
 206   return ret;
 207 }
 208
 209 WXDLLEXPORT wxChar * wxStrchr(const wxChar *s, wxChar c)
 210 {
 211   while (*s && *s != c) s++;
 212   return (*s) ? (wxChar *)s : (wxChar *)NULL;
 213 }
 214
 215 WXDLLEXPORT int wxStrcmp(const wxChar *s1, const wxChar *s2)
 216 {
 217   while ((*s1 == *s2) && *s1) s1++, s2++;
 218   if ((wxUChar)*s1 < (wxUChar)*s2) return -1;
 219   if ((wxUChar)*s1 > (wxUChar)*s2) return 1;
 220   return 0;
 221 }
 222
 223 WXDLLEXPORT wxChar * wxStrcpy(wxChar *dest, const wxChar *src)
 224 {
 225   wxChar *ret = dest;
 226   while ((*dest++ = *src++));
 227   return ret;
 228 }
 229
 230 WXDLLEXPORT wxChar * wxStrncat(wxChar *dest, const wxChar *src, size_t n)
 231 {
 232   wxChar *ret = dest;
 233   while (*dest) dest++;
 234   while (n && (*dest++ = *src++)) n--;
 235   return ret;
 236 }
 237
 238 WXDLLEXPORT int wxStrncmp(const wxChar *s1, const wxChar *s2, size_t n)
 239 {
 240   while (n && (*s1 == *s2) && *s1) n--, s1++, s2++;
 241   if (n) {
 242     if ((wxUChar)*s1 < (wxUChar)*s2) return -1;
 243     if ((wxUChar)*s1 > (wxUChar)*s2) return 1;
 244   }
 245   return 0;
 246 }
 247
 248 WXDLLEXPORT wxChar * wxStrncpy(wxChar *dest, const wxChar *src, size_t n)
 249 {
 250   wxChar *ret = dest;
 251   while (n && (*dest++ = *src++)) n--;
 252   while (n) *dest++=0, n--; // the docs specify padding with zeroes
 253   return ret;
 254 }
 255
 256 WXDLLEXPORT wxChar * wxStrpbrk(const wxChar *s, const wxChar *accept)
 257 {
 258   while (*s && !wxStrchr(accept, *s)) s++;
 259   return (*s) ? (wxChar *)s : (wxChar *)NULL;
 260 }
 261
 262 WXDLLEXPORT wxChar * wxStrrchr(const wxChar *s, wxChar c)
 263 {
 264   wxChar *ret = (wxChar *)NULL;
 265   while (*s) {
 266     if (*s == c) ret = (wxChar *)s;
 267     s++;
 268   }
 269   return ret;
 270 }
 271
 272 WXDLLEXPORT size_t wxStrspn(const wxChar *s, const wxChar *accept)
 273 {
 274   size_t len = 0;
 275   while (wxStrchr(accept, *s++)) len++;
 276   return len;
 277 }
 278
 279 WXDLLEXPORT wxChar * wxStrstr(const wxChar *haystack, const wxChar *needle)
 280 {
 281   wxChar *fnd;
 282   while ((fnd = wxStrchr(haystack, *needle))) {
 283     if (!wxStrcmp(fnd, needle)) return fnd;
 284     haystack = fnd + 1;
 285   }
 286   return (wxChar *)NULL;
 287 }
 288
 289 WXDLLEXPORT double wxStrtod(const wxChar *nptr, wxChar **endptr)
 290 {
 291   const wxChar *start = nptr;
 292
 293   // FIXME: only correct for C locale
 294   while (wxIsspace(*nptr)) nptr++;
 295   if (*nptr == wxT('+') || *nptr == wxT('-')) nptr++;
 296   while (wxIsdigit(*nptr)) nptr++;
 297   if (*nptr == wxT('.')) {
 298     nptr++;
 299     while (wxIsdigit(*nptr)) nptr++;
 300   }
 301   if (*nptr == wxT('E') || *nptr == wxT('e')) {
 302     nptr++;
 303     if (*nptr == wxT('+') || *nptr == wxT('-')) nptr++;
 304     while (wxIsdigit(*nptr)) nptr++;
 305   }
 306
 307   wxString data(nptr, nptr-start);
 308   wxWX2MBbuf dat = data.mb_str(wxConvLibc);
 309   char *rdat = wxMBSTRINGCAST dat;
 310   double ret = strtod(dat, &rdat);
 311
 312   if (endptr) *endptr = (wxChar *)(start + (rdat - (const char *)dat));
 313
 314   return ret;
 315 }
 316
 317 WXDLLEXPORT long int wxStrtol(const wxChar *nptr, wxChar **endptr, int base)
 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   if (((base == 0) || (base == 16)) &&
 325       (nptr[0] == wxT('0') && nptr[1] == wxT('x'))) {
 326     nptr += 2;
 327     base = 16;
 328   }
 329   else if ((base == 0) && (nptr[0] == wxT('0'))) base = 8;
 330   else if (base == 0) base = 10;
 331
 332   while ((wxIsdigit(*nptr) && (*nptr - wxT('0') < base)) ||
 333          (wxIsalpha(*nptr) && (wxToupper(*nptr) - wxT('A') + 10 < base))) nptr++;
 334
 335   wxString data(nptr, nptr-start);
 336   wxWX2MBbuf dat = data.mb_str(wxConvLibc);
 337   char *rdat = wxMBSTRINGCAST dat;
 338   long int ret = strtol(dat, &rdat, base);
 339
 340   if (endptr) *endptr = (wxChar *)(start + (rdat - (const char *)dat));
 341
 342   return ret;
 343 }
 344 #endif
 345
 346 #ifdef wxNEED_WX_STDIO_H
 347 WXDLLEXPORT FILE * wxFopen(const wxChar *path, const wxChar *mode)
 348 {
 349   return fopen(wxConvFile.cWX2MB(path), wxConvLibc.cWX2MB(mode));
 350 }
 351
 352 WXDLLEXPORT FILE * wxFreopen(const wxChar *path, const wxChar *mode, FILE *stream)
 353 {
 354   return freopen(wxConvFile.cWX2MB(path), wxConvLibc.cWX2MB(mode), stream);
 355 }
 356
 357 int WXDLLEXPORT wxPrintf(const wxChar *fmt, ...)
 358 {
 359   va_list argptr;
 360   int ret;
 361
 362   va_start(argptr, fmt);
 363   ret = wxVprintf(fmt, argptr);
 364   va_end(argptr);
 365   return ret;
 366 }
 367
 368 int WXDLLEXPORT wxVprintf(const wxChar *fmt, va_list argptr)
 369 {
 370   wxString str;
 371   str.PrintfV(fmt,argptr);
 372   printf("%s", (const char*)str.mb_str());
 373   return str.Len();
 374 }
 375
 376 int WXDLLEXPORT wxFprintf(FILE *stream, const wxChar *fmt, ...)
 377 {
 378   va_list argptr;
 379   int ret;
 380
 381   va_start(argptr, fmt);
 382   ret = wxVfprintf(stream, fmt, argptr);
 383   va_end(argptr);
 384   return ret;
 385 }
 386
 387 int WXDLLEXPORT wxVfprintf(FILE *stream, const wxChar *fmt, va_list argptr)
 388 {
 389   wxString str;
 390   str.PrintfV(fmt,argptr);
 391   fprintf(stream, "%s", (const char*)str.mb_str());
 392   return str.Len();
 393 }
 394
 395 int WXDLLEXPORT wxSprintf(wxChar *buf, const wxChar *fmt, ...)
 396 {
 397   va_list argptr;
 398   int ret;
 399
 400   va_start(argptr, fmt);
 401   ret = wxVsprintf(buf, fmt, argptr);
 402   va_end(argptr);
 403   return ret;
 404 }
 405
 406 int WXDLLEXPORT wxVsprintf(wxChar *buf, const wxChar *fmt, va_list argptr)
 407 {
 408   // this might be sort of inefficient, but it doesn't matter since
 409   // we'd prefer people to use wxString::Printf directly instead anyway
 410   wxString str;
 411   str.PrintfV(fmt,argptr);
 412   wxStrcpy(buf,str.c_str());
 413   return str.Len();
 414 }
 415
 416 int WXDLLEXPORT wxSscanf(const wxChar *buf, const wxChar *fmt, ...)
 417 {
 418   va_list argptr;
 419   int ret;
 420
 421   va_start(argptr, fmt);
 422   ret = wxVsscanf(buf, fmt, argptr);
 423   va_end(argptr);
 424   return ret;
 425 }
 426
 427 int WXDLLEXPORT wxVsscanf(const wxChar *buf, const wxChar *fmt, va_list argptr)
 428 {
 429   int ret;
 430   // this will work only for numeric conversion! Strings will not be converted correctly
 431   // hopefully this is all we'll need
 432   ret = vsscanf(wxConvLibc.cWX2MB(buf), wxConvLibc.cWX2MB(fmt), argptr);
 433   return ret;
 434 }
 435 #endif
 436
 437 #ifndef wxAtof
 438 double   WXDLLEXPORT wxAtof(const wxChar *psz)
 439 {
 440   return atof(wxConvLibc.cWX2MB(psz));
 441 }
 442 #endif
 443
 444 #ifdef wxNEED_WX_STDLIB_H
 445 int      WXDLLEXPORT wxAtoi(const wxChar *psz)
 446 {
 447   return atoi(wxConvLibc.cWX2MB(psz));
 448 }
 449
 450 long     WXDLLEXPORT wxAtol(const wxChar *psz)
 451 {
 452   return atol(wxConvLibc.cWX2MB(psz));
 453 }
 454
 455 wxChar * WXDLLEXPORT wxGetenv(const wxChar *name)
 456 {
 457   static wxHashTable env;
 458   // check if we already have stored the converted env var
 459   wxObject *data = env.Get(name);
 460   if (!data) {
 461     // nope, retrieve it,
 462     const char *val = getenv(wxConvLibc.cWX2MB(name));
 463     if (!val) return (wxChar *)NULL;
 464     // convert it,
 465     data = (wxObject *)new wxString(val);
 466     // and store it
 467     env.Put(name, data);
 468   }
 469   // return converted env var
 470   return (wxChar *)((wxString *)data)->c_str();
 471 }
 472
 473 int      WXDLLEXPORT wxSystem(const wxChar *psz)
 474 {
 475   return system(wxConvLibc.cWX2MB(psz));
 476 }
 477
 478 #endif
 479
 480 #ifdef wxNEED_WX_TIME_H
 481 WXDLLEXPORT size_t   wxStrftime(wxChar *s, size_t max, const wxChar *fmt, const struct tm *tm)
 482 {
 483   if (!max) return 0;
 484   char *buf = (char *)malloc(max);
 485   size_t ret = strftime(buf, max, wxConvLibc.cWX2MB(fmt), tm);
 486   if (ret) {
 487     wxStrcpy(s, wxConvLibc.cMB2WX(buf));
 488     free(buf);
 489     return wxStrlen(s);
 490   } else {
 491     free(buf);
 492     *s = 0;
 493     return 0;
 494   }
 495 }
 496 #endif