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   // glibc 2.0 uses UTF-8 even when it shouldn't
 101   wchar_t res = 0;
 102   if ((MB_CUR_MAX == 2) &&
 103       (wxMB2WC(&res, "\xdd\xa5", 1) == 1) &&
 104       (res==0x765)) {
 105     // this is UTF-8 allright, check whether that's what we want
 106     char *cur_locale = setlocale(LC_CTYPE, 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 wxStricmp
 172 int WXDLLEXPORT wxStrnicmp(const wxChar *s1, const wxChar *s2, size_t n)
 173 {
 174   register wxChar c1, c2;
 175   while (n && ((c1 = wxTolower(*s1)) == (c2 = wxTolower(*s2)) ) && c1) n--, s1++, s2++;
 176   if (n) {
 177     if (c1 < c2) return -1;
 178     if (c1 > c2) return 1;
 179   }
 180   return 0;
 181 }
 182 #endif
 183
 184 #ifndef wxStrtok
 185 WXDLLEXPORT wxChar * wxStrtok(wxChar *psz, const wxChar *delim, wxChar **save_ptr)
 186 {
 187   if (!psz) psz = *save_ptr;
 188   psz += wxStrspn(psz, delim);
 189   if (!*psz) {
 190     *save_ptr = (wxChar *)NULL;
 191     return (wxChar *)NULL;
 192   }
 193   wxChar *ret = psz;
 194   psz = wxStrpbrk(psz, delim);
 195   if (!psz) *save_ptr = (wxChar*)NULL;
 196   else {
 197     *psz = wxT('\0');
 198     *save_ptr = psz + 1;
 199   }
 200   return ret;
 201 }
 202 #endif
 203
 204 #ifndef wxSetlocale
 205 WXDLLEXPORT wxWCharBuffer wxSetlocale(int category, const wxChar *locale)
 206 {
 207     char *localeOld = setlocale(category, wxConvLibc.cWX2MB(locale));
 208
 209     return wxWCharBuffer(wxConvLibc.cMB2WC(localeOld));
 210 }
 211 #endif
 212
 213 #ifdef wxNEED_WX_STRING_H
 214 WXDLLEXPORT wxChar * wxStrcat(wxChar *dest, const wxChar *src)
 215 {
 216   wxChar *ret = dest;
 217   while (*dest) dest++;
 218   while ((*dest++ = *src++));
 219   return ret;
 220 }
 221
 222 WXDLLEXPORT wxChar * wxStrchr(const wxChar *s, wxChar c)
 223 {
 224   while (*s && *s != c) s++;
 225   return (*s) ? (wxChar *)s : (wxChar *)NULL;
 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 wxChar * wxStrpbrk(const wxChar *s, const wxChar *accept)
 270 {
 271   while (*s && !wxStrchr(accept, *s)) s++;
 272   return (*s) ? (wxChar *)s : (wxChar *)NULL;
 273 }
 274
 275 WXDLLEXPORT wxChar * wxStrrchr(const wxChar *s, wxChar c)
 276 {
 277   wxChar *ret = (wxChar *)NULL;
 278   while (*s) {
 279     if (*s == c) ret = (wxChar *)s;
 280     s++;
 281   }
 282   return ret;
 283 }
 284
 285 WXDLLEXPORT size_t wxStrspn(const wxChar *s, const wxChar *accept)
 286 {
 287   size_t len = 0;
 288   while (wxStrchr(accept, *s++)) len++;
 289   return len;
 290 }
 291
 292 WXDLLEXPORT wxChar * wxStrstr(const wxChar *haystack, const wxChar *needle)
 293 {
 294   wxChar *fnd;
 295   while ((fnd = wxStrchr(haystack, *needle))) {
 296     if (!wxStrcmp(fnd, needle)) return fnd;
 297     haystack = fnd + 1;
 298   }
 299   return (wxChar *)NULL;
 300 }
 301
 302 WXDLLEXPORT double wxStrtod(const wxChar *nptr, wxChar **endptr)
 303 {
 304   const wxChar *start = nptr;
 305
 306   // FIXME: only correct for C locale
 307   while (wxIsspace(*nptr)) nptr++;
 308   if (*nptr == wxT('+') || *nptr == wxT('-')) nptr++;
 309   while (wxIsdigit(*nptr)) nptr++;
 310   if (*nptr == wxT('.')) {
 311     nptr++;
 312     while (wxIsdigit(*nptr)) nptr++;
 313   }
 314   if (*nptr == wxT('E') || *nptr == wxT('e')) {
 315     nptr++;
 316     if (*nptr == wxT('+') || *nptr == wxT('-')) nptr++;
 317     while (wxIsdigit(*nptr)) nptr++;
 318   }
 319
 320   wxString data(nptr, nptr-start);
 321   wxWX2MBbuf dat = data.mb_str(wxConvLibc);
 322   char *rdat = wxMBSTRINGCAST dat;
 323   double ret = strtod(dat, &rdat);
 324
 325   if (endptr) *endptr = (wxChar *)(start + (rdat - (const char *)dat));
 326
 327   return ret;
 328 }
 329
 330 WXDLLEXPORT long int wxStrtol(const wxChar *nptr, wxChar **endptr, int base)
 331 {
 332   const wxChar *start = nptr;
 333
 334   // FIXME: only correct for C locale
 335   while (wxIsspace(*nptr)) nptr++;
 336   if (*nptr == wxT('+') || *nptr == wxT('-')) nptr++;
 337   if (((base == 0) || (base == 16)) &&
 338       (nptr[0] == wxT('0') && nptr[1] == wxT('x'))) {
 339     nptr += 2;
 340     base = 16;
 341   }
 342   else if ((base == 0) && (nptr[0] == wxT('0'))) base = 8;
 343   else if (base == 0) base = 10;
 344
 345   while ((wxIsdigit(*nptr) && (*nptr - wxT('0') < base)) ||
 346          (wxIsalpha(*nptr) && (wxToupper(*nptr) - wxT('A') + 10 < base))) nptr++;
 347
 348   wxString data(nptr, nptr-start);
 349   wxWX2MBbuf dat = data.mb_str(wxConvLibc);
 350   char *rdat = wxMBSTRINGCAST dat;
 351   long int ret = strtol(dat, &rdat, base);
 352
 353   if (endptr) *endptr = (wxChar *)(start + (rdat - (const char *)dat));
 354
 355   return ret;
 356 }
 357 #endif
 358
 359 #ifdef wxNEED_WX_STDIO_H
 360 WXDLLEXPORT FILE * wxFopen(const wxChar *path, const wxChar *mode)
 361 {
 362   return fopen(wxConvFile.cWX2MB(path), wxConvLibc.cWX2MB(mode));
 363 }
 364
 365 WXDLLEXPORT FILE * wxFreopen(const wxChar *path, const wxChar *mode, FILE *stream)
 366 {
 367   return freopen(wxConvFile.cWX2MB(path), wxConvLibc.cWX2MB(mode), stream);
 368 }
 369
 370 WXDLLEXPORT int wxRemove(const wxChar *path)
 371 {
 372   return remove(wxConvFile.cWX2MB(path));
 373 }
 374
 375 WXDLLEXPORT int wxRename(const wxChar *oldpath, const wxChar *newpath)
 376 {
 377   return rename(wxConvFile.cWX2MB(oldpath), wxConvFile.cWX2MB(newpath));
 378 }
 379
 380 int WXDLLEXPORT wxPrintf(const wxChar *fmt, ...)
 381 {
 382   va_list argptr;
 383   int ret;
 384
 385   va_start(argptr, fmt);
 386   ret = wxVprintf(fmt, argptr);
 387   va_end(argptr);
 388   return ret;
 389 }
 390
 391 int WXDLLEXPORT wxVprintf(const wxChar *fmt, va_list argptr)
 392 {
 393   wxString str;
 394   str.PrintfV(fmt,argptr);
 395   printf("%s", (const char*)str.mb_str());
 396   return str.Len();
 397 }
 398
 399 int WXDLLEXPORT wxFprintf(FILE *stream, const wxChar *fmt, ...)
 400 {
 401   va_list argptr;
 402   int ret;
 403
 404   va_start(argptr, fmt);
 405   ret = wxVfprintf(stream, fmt, argptr);
 406   va_end(argptr);
 407   return ret;
 408 }
 409
 410 int WXDLLEXPORT wxVfprintf(FILE *stream, const wxChar *fmt, va_list argptr)
 411 {
 412   wxString str;
 413   str.PrintfV(fmt,argptr);
 414   fprintf(stream, "%s", (const char*)str.mb_str());
 415   return str.Len();
 416 }
 417
 418 int WXDLLEXPORT wxSprintf(wxChar *buf, const wxChar *fmt, ...)
 419 {
 420   va_list argptr;
 421   int ret;
 422
 423   va_start(argptr, fmt);
 424   ret = wxVsprintf(buf, fmt, argptr);
 425   va_end(argptr);
 426   return ret;
 427 }
 428
 429 int WXDLLEXPORT wxVsprintf(wxChar *buf, const wxChar *fmt, va_list argptr)
 430 {
 431   // this might be sort of inefficient, but it doesn't matter since
 432   // we'd prefer people to use wxString::Printf directly instead anyway
 433   wxString str;
 434   str.PrintfV(fmt,argptr);
 435   wxStrcpy(buf,str.c_str());
 436   return str.Len();
 437 }
 438
 439 int WXDLLEXPORT wxSscanf(const wxChar *buf, const wxChar *fmt, ...)
 440 {
 441   va_list argptr;
 442   int ret;
 443
 444   va_start(argptr, fmt);
 445   ret = wxVsscanf(buf, fmt, argptr);
 446   va_end(argptr);
 447   return ret;
 448 }
 449
 450 int WXDLLEXPORT wxVsscanf(const wxChar *buf, const wxChar *fmt, va_list argptr)
 451 {
 452   int ret;
 453   // this will work only for numeric conversion! Strings will not be converted correctly
 454   // hopefully this is all we'll need
 455   ret = vsscanf(wxConvLibc.cWX2MB(buf), wxConvLibc.cWX2MB(fmt), argptr);
 456   return ret;
 457 }
 458 #endif
 459
 460 #ifndef wxAtof
 461 double   WXDLLEXPORT wxAtof(const wxChar *psz)
 462 {
 463   return atof(wxConvLibc.cWX2MB(psz));
 464 }
 465 #endif
 466
 467 #ifdef wxNEED_WX_STDLIB_H
 468 int      WXDLLEXPORT wxAtoi(const wxChar *psz)
 469 {
 470   return atoi(wxConvLibc.cWX2MB(psz));
 471 }
 472
 473 long     WXDLLEXPORT wxAtol(const wxChar *psz)
 474 {
 475   return atol(wxConvLibc.cWX2MB(psz));
 476 }
 477
 478 wxChar * WXDLLEXPORT wxGetenv(const wxChar *name)
 479 {
 480   static wxHashTable env;
 481   // check if we already have stored the converted env var
 482   wxObject *data = env.Get(name);
 483   if (!data) {
 484     // nope, retrieve it,
 485     const char *val = getenv(wxConvLibc.cWX2MB(name));
 486     if (!val) return (wxChar *)NULL;
 487     // convert it,
 488     data = (wxObject *)new wxString(val);
 489     // and store it
 490     env.Put(name, data);
 491   }
 492   // return converted env var
 493   return (wxChar *)((wxString *)data)->c_str();
 494 }
 495
 496 int      WXDLLEXPORT wxSystem(const wxChar *psz)
 497 {
 498   return system(wxConvLibc.cWX2MB(psz));
 499 }
 500
 501 #endif
 502
 503 #ifdef wxNEED_WX_TIME_H
 504 WXDLLEXPORT size_t   wxStrftime(wxChar *s, size_t max, const wxChar *fmt, const struct tm *tm)
 505 {
 506   if (!max) return 0;
 507   char *buf = (char *)malloc(max);
 508   size_t ret = strftime(buf, max, wxConvLibc.cWX2MB(fmt), tm);
 509   if (ret) {
 510     wxStrcpy(s, wxConvLibc.cMB2WX(buf));
 511     free(buf);
 512     return wxStrlen(s);
 513   } else {
 514     free(buf);
 515     *s = 0;
 516     return 0;
 517   }
 518 }
 519 #endif