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 wxChar * wxSetlocale(int category, const wxChar *locale)
 193 {
 194 #ifdef wxUSE_THREADS
 195     wxASSERT_MSG( wxThread::IsMain(), _T("wxSetlocale() is not MT-safe") );
 196 #endif
 197
 198     static wxWCharBuffer s_wzLocale;
 199
 200     char *localeOld = setlocale(category, wxConvLibc.cWX2MB(locale));
 201     s_wzLocale = wxConvLibc.cMB2WC(localeOld);
 202
 203     return s_wzLocale;
 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   wxChar *fnd;
 289   while ((fnd = wxStrchr(haystack, *needle))) {
 290     if (!wxStrcmp(fnd, needle)) return fnd;
 291     haystack = fnd + 1;
 292   }
 293   return (wxChar *)NULL;
 294 }
 295
 296 WXDLLEXPORT double wxStrtod(const wxChar *nptr, wxChar **endptr)
 297 {
 298   const wxChar *start = nptr;
 299
 300   // FIXME: only correct for C locale
 301   while (wxIsspace(*nptr)) nptr++;
 302   if (*nptr == wxT('+') || *nptr == wxT('-')) nptr++;
 303   while (wxIsdigit(*nptr)) nptr++;
 304   if (*nptr == wxT('.')) {
 305     nptr++;
 306     while (wxIsdigit(*nptr)) nptr++;
 307   }
 308   if (*nptr == wxT('E') || *nptr == wxT('e')) {
 309     nptr++;
 310     if (*nptr == wxT('+') || *nptr == wxT('-')) nptr++;
 311     while (wxIsdigit(*nptr)) nptr++;
 312   }
 313
 314   wxString data(nptr, nptr-start);
 315   wxWX2MBbuf dat = data.mb_str(wxConvLibc);
 316   char *rdat = wxMBSTRINGCAST dat;
 317   double ret = strtod(dat, &rdat);
 318
 319   if (endptr) *endptr = (wxChar *)(start + (rdat - (const char *)dat));
 320
 321   return ret;
 322 }
 323
 324 WXDLLEXPORT long int wxStrtol(const wxChar *nptr, wxChar **endptr, int base)
 325 {
 326   const wxChar *start = nptr;
 327
 328   // FIXME: only correct for C locale
 329   while (wxIsspace(*nptr)) nptr++;
 330   if (*nptr == wxT('+') || *nptr == wxT('-')) nptr++;
 331   if (((base == 0) || (base == 16)) &&
 332       (nptr[0] == wxT('0') && nptr[1] == wxT('x'))) {
 333     nptr += 2;
 334     base = 16;
 335   }
 336   else if ((base == 0) && (nptr[0] == wxT('0'))) base = 8;
 337   else if (base == 0) base = 10;
 338
 339   while ((wxIsdigit(*nptr) && (*nptr - wxT('0') < base)) ||
 340          (wxIsalpha(*nptr) && (wxToupper(*nptr) - wxT('A') + 10 < base))) nptr++;
 341
 342   wxString data(nptr, nptr-start);
 343   wxWX2MBbuf dat = data.mb_str(wxConvLibc);
 344   char *rdat = wxMBSTRINGCAST dat;
 345   long int ret = strtol(dat, &rdat, base);
 346
 347   if (endptr) *endptr = (wxChar *)(start + (rdat - (const char *)dat));
 348
 349   return ret;
 350 }
 351 #endif
 352
 353 #ifdef wxNEED_WX_STDIO_H
 354 WXDLLEXPORT FILE * wxFopen(const wxChar *path, const wxChar *mode)
 355 {
 356   return fopen(wxConvFile.cWX2MB(path), wxConvLibc.cWX2MB(mode));
 357 }
 358
 359 WXDLLEXPORT FILE * wxFreopen(const wxChar *path, const wxChar *mode, FILE *stream)
 360 {
 361   return freopen(wxConvFile.cWX2MB(path), wxConvLibc.cWX2MB(mode), stream);
 362 }
 363
 364 int WXDLLEXPORT wxPrintf(const wxChar *fmt, ...)
 365 {
 366   va_list argptr;
 367   int ret;
 368
 369   va_start(argptr, fmt);
 370   ret = wxVprintf(fmt, argptr);
 371   va_end(argptr);
 372   return ret;
 373 }
 374
 375 int WXDLLEXPORT wxVprintf(const wxChar *fmt, va_list argptr)
 376 {
 377   wxString str;
 378   str.PrintfV(fmt,argptr);
 379   printf("%s", (const char*)str.mb_str());
 380   return str.Len();
 381 }
 382
 383 int WXDLLEXPORT wxFprintf(FILE *stream, const wxChar *fmt, ...)
 384 {
 385   va_list argptr;
 386   int ret;
 387
 388   va_start(argptr, fmt);
 389   ret = wxVfprintf(stream, fmt, argptr);
 390   va_end(argptr);
 391   return ret;
 392 }
 393
 394 int WXDLLEXPORT wxVfprintf(FILE *stream, const wxChar *fmt, va_list argptr)
 395 {
 396   wxString str;
 397   str.PrintfV(fmt,argptr);
 398   fprintf(stream, "%s", (const char*)str.mb_str());
 399   return str.Len();
 400 }
 401
 402 int WXDLLEXPORT wxSprintf(wxChar *buf, const wxChar *fmt, ...)
 403 {
 404   va_list argptr;
 405   int ret;
 406
 407   va_start(argptr, fmt);
 408   ret = wxVsprintf(buf, fmt, argptr);
 409   va_end(argptr);
 410   return ret;
 411 }
 412
 413 int WXDLLEXPORT wxVsprintf(wxChar *buf, const wxChar *fmt, va_list argptr)
 414 {
 415   // this might be sort of inefficient, but it doesn't matter since
 416   // we'd prefer people to use wxString::Printf directly instead anyway
 417   wxString str;
 418   str.PrintfV(fmt,argptr);
 419   wxStrcpy(buf,str.c_str());
 420   return str.Len();
 421 }
 422
 423 int WXDLLEXPORT wxSscanf(const wxChar *buf, const wxChar *fmt, ...)
 424 {
 425   va_list argptr;
 426   int ret;
 427
 428   va_start(argptr, fmt);
 429   ret = wxVsscanf(buf, fmt, argptr);
 430   va_end(argptr);
 431   return ret;
 432 }
 433
 434 int WXDLLEXPORT wxVsscanf(const wxChar *buf, const wxChar *fmt, va_list argptr)
 435 {
 436   int ret;
 437   // this will work only for numeric conversion! Strings will not be converted correctly
 438   // hopefully this is all we'll need
 439   ret = vsscanf(wxConvLibc.cWX2MB(buf), wxConvLibc.cWX2MB(fmt), argptr);
 440   return ret;
 441 }
 442 #endif
 443
 444 #ifndef wxAtof
 445 double   WXDLLEXPORT wxAtof(const wxChar *psz)
 446 {
 447   return atof(wxConvLibc.cWX2MB(psz));
 448 }
 449 #endif
 450
 451 #ifdef wxNEED_WX_STDLIB_H
 452 int      WXDLLEXPORT wxAtoi(const wxChar *psz)
 453 {
 454   return atoi(wxConvLibc.cWX2MB(psz));
 455 }
 456
 457 long     WXDLLEXPORT wxAtol(const wxChar *psz)
 458 {
 459   return atol(wxConvLibc.cWX2MB(psz));
 460 }
 461
 462 wxChar * WXDLLEXPORT wxGetenv(const wxChar *name)
 463 {
 464   static wxHashTable env;
 465   // check if we already have stored the converted env var
 466   wxObject *data = env.Get(name);
 467   if (!data) {
 468     // nope, retrieve it,
 469     const char *val = getenv(wxConvLibc.cWX2MB(name));
 470     if (!val) return (wxChar *)NULL;
 471     // convert it,
 472     data = (wxObject *)new wxString(val);
 473     // and store it
 474     env.Put(name, data);
 475   }
 476   // return converted env var
 477   return (wxChar *)((wxString *)data)->c_str();
 478 }
 479
 480 int      WXDLLEXPORT wxSystem(const wxChar *psz)
 481 {
 482   return system(wxConvLibc.cWX2MB(psz));
 483 }
 484
 485 #endif
 486
 487 #ifdef wxNEED_WX_TIME_H
 488 WXDLLEXPORT size_t   wxStrftime(wxChar *s, size_t max, const wxChar *fmt, const struct tm *tm)
 489 {
 490   if (!max) return 0;
 491   char *buf = (char *)malloc(max);
 492   size_t ret = strftime(buf, max, wxConvLibc.cWX2MB(fmt), tm);
 493   if (ret) {
 494     wxStrcpy(s, wxConvLibc.cMB2WX(buf));
 495     free(buf);
 496     return wxStrlen(s);
 497   } else {
 498     free(buf);
 499     *s = 0;
 500     return 0;
 501   }
 502 }
 503 #endif