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         (strcasecmp(cur_locale + strlen(cur_locale) - 5, "utf-8"))) {
 110       // nope, don't use libc conversion
 111       return FALSE;
 112     }
 113   }
 114 #endif
 115   return TRUE;
 116 }
 117
 118 #ifndef HAVE_WCSLEN
 119 size_t   WXDLLEXPORT wcslen(const wchar_t *s)
 120 {
 121   size_t len = 0;
 122   while (s[len]) len++;
 123   return len;
 124 }
 125 #endif
 126
 127 #if defined(__WIN32__) && defined(wxNEED_WX_CTYPE_H)
 128 inline WORD wxMSW_ctype(wxChar ch)
 129 {
 130   WORD ret;
 131   GetStringTypeEx(LOCALE_USER_DEFAULT, CT_CTYPE1, &ch, 1, &ret);
 132   return ret;
 133 }
 134
 135 WXDLLEXPORT int wxIsalnum(wxChar ch) { return IsCharAlphaNumeric(ch); }
 136 WXDLLEXPORT int wxIsalpha(wxChar ch) { return IsCharAlpha(ch); }
 137 WXDLLEXPORT int wxIsctrl(wxChar ch) { return wxMSW_ctype(ch) & C1_CNTRL; }
 138 WXDLLEXPORT int wxIsdigit(wxChar ch) { return wxMSW_ctype(ch) & C1_DIGIT; }
 139 WXDLLEXPORT int wxIsgraph(wxChar ch) { return wxMSW_ctype(ch) & (C1_DIGIT|C1_PUNCT|C1_ALPHA); }
 140 WXDLLEXPORT int wxIslower(wxChar ch) { return IsCharLower(ch); }
 141 WXDLLEXPORT int wxIsprint(wxChar ch) { return wxMSW_ctype(ch) & (C1_DIGIT|C1_SPACE|C1_PUNCT|C1_ALPHA); }
 142 WXDLLEXPORT int wxIspunct(wxChar ch) { return wxMSW_ctype(ch) & C1_PUNCT; }
 143 WXDLLEXPORT int wxIsspace(wxChar ch) { return wxMSW_ctype(ch) & C1_SPACE; }
 144 WXDLLEXPORT int wxIsupper(wxChar ch) { return IsCharUpper(ch); }
 145 WXDLLEXPORT int wxIsxdigit(wxChar ch) { return wxMSW_ctype(ch) & C1_XDIGIT; }
 146 WXDLLEXPORT int wxTolower(wxChar ch) { return (wxChar)CharLower((LPTSTR)(ch)); }
 147 WXDLLEXPORT int wxToupper(wxChar ch) { return (wxChar)CharUpper((LPTSTR)(ch)); }
 148 #endif
 149
 150 #ifndef wxStrdup
 151 WXDLLEXPORT wxChar * wxStrdup(const wxChar *psz)
 152 {
 153   size_t size = (wxStrlen(psz) + 1) * sizeof(wxChar);
 154   wxChar *ret = (wxChar *) malloc(size);
 155   memcpy(ret, psz, size);
 156   return ret;
 157 }
 158 #endif
 159
 160 #ifndef wxStricmp
 161 int WXDLLEXPORT wxStricmp(const wxChar *psz1, const wxChar *psz2)
 162 {
 163   register wxChar c1, c2;
 164   do {
 165     c1 = wxTolower(*psz1++);
 166     c2 = wxTolower(*psz2++);
 167   } while ( c1 && (c1 == c2) );
 168   return c1 - c2;
 169 }
 170 #endif
 171
 172 #ifndef wxStricmp
 173 int WXDLLEXPORT wxStrnicmp(const wxChar *s1, const wxChar *s2, size_t n)
 174 {
 175   register wxChar c1, c2;
 176   while (n && ((c1 = wxTolower(*s1)) == (c2 = wxTolower(*s2)) ) && c1) n--, s1++, s2++;
 177   if (n) {
 178     if (c1 < c2) return -1;
 179     if (c1 > c2) return 1;
 180   }
 181   return 0;
 182 }
 183 #endif
 184
 185 #ifndef wxStrtok
 186 WXDLLEXPORT wxChar * wxStrtok(wxChar *psz, const wxChar *delim, wxChar **save_ptr)
 187 {
 188   if (!psz) psz = *save_ptr;
 189   psz += wxStrspn(psz, delim);
 190   if (!*psz) {
 191     *save_ptr = (wxChar *)NULL;
 192     return (wxChar *)NULL;
 193   }
 194   wxChar *ret = psz;
 195   psz = wxStrpbrk(psz, delim);
 196   if (!psz) *save_ptr = (wxChar*)NULL;
 197   else {
 198     *psz = wxT('\0');
 199     *save_ptr = psz + 1;
 200   }
 201   return ret;
 202 }
 203 #endif
 204
 205 #ifndef wxSetlocale
 206 WXDLLEXPORT wxWCharBuffer wxSetlocale(int category, const wxChar *locale)
 207 {
 208     char *localeOld = setlocale(category, wxConvLibc.cWX2MB(locale));
 209
 210     return wxWCharBuffer(wxConvLibc.cMB2WC(localeOld));
 211 }
 212 #endif
 213
 214 #ifdef wxNEED_WX_STRING_H
 215 WXDLLEXPORT wxChar * wxStrcat(wxChar *dest, const wxChar *src)
 216 {
 217   wxChar *ret = dest;
 218   while (*dest) dest++;
 219   while ((*dest++ = *src++));
 220   return ret;
 221 }
 222
 223 WXDLLEXPORT wxChar * wxStrchr(const wxChar *s, wxChar c)
 224 {
 225   while (*s && *s != c) s++;
 226   return (*s) ? (wxChar *)s : (wxChar *)NULL;
 227 }
 228
 229 WXDLLEXPORT int wxStrcmp(const wxChar *s1, const wxChar *s2)
 230 {
 231   while ((*s1 == *s2) && *s1) s1++, s2++;
 232   if ((wxUChar)*s1 < (wxUChar)*s2) return -1;
 233   if ((wxUChar)*s1 > (wxUChar)*s2) return 1;
 234   return 0;
 235 }
 236
 237 WXDLLEXPORT wxChar * wxStrcpy(wxChar *dest, const wxChar *src)
 238 {
 239   wxChar *ret = dest;
 240   while ((*dest++ = *src++));
 241   return ret;
 242 }
 243
 244 WXDLLEXPORT wxChar * wxStrncat(wxChar *dest, const wxChar *src, size_t n)
 245 {
 246   wxChar *ret = dest;
 247   while (*dest) dest++;
 248   while (n && (*dest++ = *src++)) n--;
 249   return ret;
 250 }
 251
 252 WXDLLEXPORT int wxStrncmp(const wxChar *s1, const wxChar *s2, size_t n)
 253 {
 254   while (n && (*s1 == *s2) && *s1) n--, s1++, s2++;
 255   if (n) {
 256     if ((wxUChar)*s1 < (wxUChar)*s2) return -1;
 257     if ((wxUChar)*s1 > (wxUChar)*s2) return 1;
 258   }
 259   return 0;
 260 }
 261
 262 WXDLLEXPORT wxChar * wxStrncpy(wxChar *dest, const wxChar *src, size_t n)
 263 {
 264   wxChar *ret = dest;
 265   while (n && (*dest++ = *src++)) n--;
 266   while (n) *dest++=0, n--; // the docs specify padding with zeroes
 267   return ret;
 268 }
 269
 270 WXDLLEXPORT wxChar * wxStrpbrk(const wxChar *s, const wxChar *accept)
 271 {
 272   while (*s && !wxStrchr(accept, *s)) s++;
 273   return (*s) ? (wxChar *)s : (wxChar *)NULL;
 274 }
 275
 276 WXDLLEXPORT wxChar * wxStrrchr(const wxChar *s, wxChar c)
 277 {
 278   wxChar *ret = (wxChar *)NULL;
 279   while (*s) {
 280     if (*s == c) ret = (wxChar *)s;
 281     s++;
 282   }
 283   return ret;
 284 }
 285
 286 WXDLLEXPORT size_t wxStrspn(const wxChar *s, const wxChar *accept)
 287 {
 288   size_t len = 0;
 289   while (wxStrchr(accept, *s++)) len++;
 290   return len;
 291 }
 292
 293 WXDLLEXPORT wxChar * wxStrstr(const wxChar *haystack, const wxChar *needle)
 294 {
 295   wxChar *fnd;
 296   while ((fnd = wxStrchr(haystack, *needle))) {
 297     if (!wxStrcmp(fnd, needle)) return fnd;
 298     haystack = fnd + 1;
 299   }
 300   return (wxChar *)NULL;
 301 }
 302
 303 WXDLLEXPORT double wxStrtod(const wxChar *nptr, wxChar **endptr)
 304 {
 305   const wxChar *start = nptr;
 306
 307   // FIXME: only correct for C locale
 308   while (wxIsspace(*nptr)) nptr++;
 309   if (*nptr == wxT('+') || *nptr == wxT('-')) nptr++;
 310   while (wxIsdigit(*nptr)) nptr++;
 311   if (*nptr == wxT('.')) {
 312     nptr++;
 313     while (wxIsdigit(*nptr)) nptr++;
 314   }
 315   if (*nptr == wxT('E') || *nptr == wxT('e')) {
 316     nptr++;
 317     if (*nptr == wxT('+') || *nptr == wxT('-')) nptr++;
 318     while (wxIsdigit(*nptr)) nptr++;
 319   }
 320
 321   wxString data(nptr, nptr-start);
 322   wxWX2MBbuf dat = data.mb_str(wxConvLibc);
 323   char *rdat = wxMBSTRINGCAST dat;
 324   double ret = strtod(dat, &rdat);
 325
 326   if (endptr) *endptr = (wxChar *)(start + (rdat - (const char *)dat));
 327
 328   return ret;
 329 }
 330
 331 WXDLLEXPORT long int wxStrtol(const wxChar *nptr, wxChar **endptr, int base)
 332 {
 333   const wxChar *start = nptr;
 334
 335   // FIXME: only correct for C locale
 336   while (wxIsspace(*nptr)) nptr++;
 337   if (*nptr == wxT('+') || *nptr == wxT('-')) nptr++;
 338   if (((base == 0) || (base == 16)) &&
 339       (nptr[0] == wxT('0') && nptr[1] == wxT('x'))) {
 340     nptr += 2;
 341     base = 16;
 342   }
 343   else if ((base == 0) && (nptr[0] == wxT('0'))) base = 8;
 344   else if (base == 0) base = 10;
 345
 346   while ((wxIsdigit(*nptr) && (*nptr - wxT('0') < base)) ||
 347          (wxIsalpha(*nptr) && (wxToupper(*nptr) - wxT('A') + 10 < base))) nptr++;
 348
 349   wxString data(nptr, nptr-start);
 350   wxWX2MBbuf dat = data.mb_str(wxConvLibc);
 351   char *rdat = wxMBSTRINGCAST dat;
 352   long int ret = strtol(dat, &rdat, base);
 353
 354   if (endptr) *endptr = (wxChar *)(start + (rdat - (const char *)dat));
 355
 356   return ret;
 357 }
 358 #endif
 359
 360 #ifdef wxNEED_WX_STDIO_H
 361 WXDLLEXPORT FILE * wxFopen(const wxChar *path, const wxChar *mode)
 362 {
 363   return fopen(wxConvFile.cWX2MB(path), wxConvLibc.cWX2MB(mode));
 364 }
 365
 366 WXDLLEXPORT FILE * wxFreopen(const wxChar *path, const wxChar *mode, FILE *stream)
 367 {
 368   return freopen(wxConvFile.cWX2MB(path), wxConvLibc.cWX2MB(mode), stream);
 369 }
 370
 371 WXDLLEXPORT int wxRemove(const wxChar *path)
 372 {
 373   return remove(wxConvFile.cWX2MB(path));
 374 }
 375
 376 WXDLLEXPORT int wxRename(const wxChar *oldpath, const wxChar *newpath)
 377 {
 378   return rename(wxConvFile.cWX2MB(oldpath), wxConvFile.cWX2MB(newpath));
 379 }
 380
 381 int WXDLLEXPORT wxPrintf(const wxChar *fmt, ...)
 382 {
 383   va_list argptr;
 384   int ret;
 385
 386   va_start(argptr, fmt);
 387   ret = wxVprintf(fmt, argptr);
 388   va_end(argptr);
 389   return ret;
 390 }
 391
 392 int WXDLLEXPORT wxVprintf(const wxChar *fmt, va_list argptr)
 393 {
 394   wxString str;
 395   str.PrintfV(fmt,argptr);
 396   printf("%s", (const char*)str.mb_str());
 397   return str.Len();
 398 }
 399
 400 int WXDLLEXPORT wxFprintf(FILE *stream, const wxChar *fmt, ...)
 401 {
 402   va_list argptr;
 403   int ret;
 404
 405   va_start(argptr, fmt);
 406   ret = wxVfprintf(stream, fmt, argptr);
 407   va_end(argptr);
 408   return ret;
 409 }
 410
 411 int WXDLLEXPORT wxVfprintf(FILE *stream, const wxChar *fmt, va_list argptr)
 412 {
 413   wxString str;
 414   str.PrintfV(fmt,argptr);
 415   fprintf(stream, "%s", (const char*)str.mb_str());
 416   return str.Len();
 417 }
 418
 419 int WXDLLEXPORT wxSprintf(wxChar *buf, const wxChar *fmt, ...)
 420 {
 421   va_list argptr;
 422   int ret;
 423
 424   va_start(argptr, fmt);
 425   ret = wxVsprintf(buf, fmt, argptr);
 426   va_end(argptr);
 427   return ret;
 428 }
 429
 430 int WXDLLEXPORT wxVsprintf(wxChar *buf, const wxChar *fmt, va_list argptr)
 431 {
 432   // this might be sort of inefficient, but it doesn't matter since
 433   // we'd prefer people to use wxString::Printf directly instead anyway
 434   wxString str;
 435   str.PrintfV(fmt,argptr);
 436   wxStrcpy(buf,str.c_str());
 437   return str.Len();
 438 }
 439
 440 int WXDLLEXPORT wxSscanf(const wxChar *buf, const wxChar *fmt, ...)
 441 {
 442   va_list argptr;
 443   int ret;
 444
 445   va_start(argptr, fmt);
 446   ret = wxVsscanf(buf, fmt, argptr);
 447   va_end(argptr);
 448   return ret;
 449 }
 450
 451 int WXDLLEXPORT wxVsscanf(const wxChar *buf, const wxChar *fmt, va_list argptr)
 452 {
 453   int ret;
 454   // this will work only for numeric conversion! Strings will not be converted correctly
 455   // hopefully this is all we'll need
 456   ret = vsscanf(wxConvLibc.cWX2MB(buf), wxConvLibc.cWX2MB(fmt), argptr);
 457   return ret;
 458 }
 459 #endif
 460
 461 #ifndef wxAtof
 462 double   WXDLLEXPORT wxAtof(const wxChar *psz)
 463 {
 464   return atof(wxConvLibc.cWX2MB(psz));
 465 }
 466 #endif
 467
 468 #ifdef wxNEED_WX_STDLIB_H
 469 int      WXDLLEXPORT wxAtoi(const wxChar *psz)
 470 {
 471   return atoi(wxConvLibc.cWX2MB(psz));
 472 }
 473
 474 long     WXDLLEXPORT wxAtol(const wxChar *psz)
 475 {
 476   return atol(wxConvLibc.cWX2MB(psz));
 477 }
 478
 479 wxChar * WXDLLEXPORT wxGetenv(const wxChar *name)
 480 {
 481   static wxHashTable env;
 482   // check if we already have stored the converted env var
 483   wxObject *data = env.Get(name);
 484   if (!data) {
 485     // nope, retrieve it,
 486     const char *val = getenv(wxConvLibc.cWX2MB(name));
 487     if (!val) return (wxChar *)NULL;
 488     // convert it,
 489     data = (wxObject *)new wxString(val);
 490     // and store it
 491     env.Put(name, data);
 492   }
 493   // return converted env var
 494   return (wxChar *)((wxString *)data)->c_str();
 495 }
 496
 497 int      WXDLLEXPORT wxSystem(const wxChar *psz)
 498 {
 499   return system(wxConvLibc.cWX2MB(psz));
 500 }
 501
 502 #endif
 503
 504 #ifdef wxNEED_WX_TIME_H
 505 WXDLLEXPORT size_t   wxStrftime(wxChar *s, size_t max, const wxChar *fmt, const struct tm *tm)
 506 {
 507   if (!max) return 0;
 508   char *buf = (char *)malloc(max);
 509   size_t ret = strftime(buf, max, wxConvLibc.cWX2MB(fmt), tm);
 510   if (ret) {
 511     wxStrcpy(s, wxConvLibc.cMB2WX(buf));
 512     free(buf);
 513     return wxStrlen(s);
 514   } else {
 515     free(buf);
 516     *s = 0;
 517     return 0;
 518   }
 519 }
 520 #endif