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 #include "wx/msgdlg.h"
  44
  45 #if defined(__WIN32__) && defined(wxNEED_WX_CTYPE_H)
  46   #include <windef.h>
  47   #include <winbase.h>
  48   #include <winnls.h>
  49   #include <winnt.h>
  50 #endif
  51
  52 #if wxUSE_WCHAR_T
  53 size_t WXDLLEXPORT wxMB2WC(wchar_t *buf, const char *psz, size_t n)
  54 {
  55   if (buf) {
  56     if (!n || !*psz) {
  57       if (n) *buf = wxT('\0');
  58       return 0;
  59     }
  60     return mbstowcs(buf, psz, n);
  61   }
  62
  63   // assume that we have mbsrtowcs() too if we have wcsrtombs()
  64 #ifdef HAVE_WCSRTOMBS
  65   mbstate_t mbstate;
  66   return mbsrtowcs((wchar_t *) NULL, &psz, 0, &mbstate);
  67 #else  // !GNU libc
  68   return mbstowcs((wchar_t *) NULL, psz, 0);
  69 #endif // GNU
  70 }
  71
  72 size_t WXDLLEXPORT wxWC2MB(char *buf, const wchar_t *pwz, size_t n)
  73 {
  74   if (buf) {
  75     if (!n || !*pwz) {
  76       // glibc2.1 chokes on null input
  77       if (n) *buf = '\0';
  78       return 0;
  79     }
  80     return wcstombs(buf, pwz, n);
  81   }
  82
  83 #if HAVE_WCSRTOMBS
  84   mbstate_t mbstate;
  85   return wcsrtombs((char *) NULL, &pwz, 0, &mbstate);
  86 #else  // !GNU libc
  87   return wcstombs((char *) NULL, pwz, 0);
  88 #endif // GNU
  89 }
  90 #endif // wxUSE_WCHAR_T
  91
  92 bool WXDLLEXPORT wxOKlibc()
  93 {
  94 #if wxUSE_WCHAR_T && defined(__UNIX__) && defined(__GLIBC__)
  95   // glibc 2.0 uses UTF-8 even when it shouldn't
  96   wchar_t res = 0;
  97   if ((MB_CUR_MAX == 2) &&
  98       (wxMB2WC(&res, "\xdd\xa5", 1) == 1) &&
  99       (res==0x765)) {
 100     // this is UTF-8 allright, check whether that's what we want
 101     char *cur_locale = setlocale(LC_CTYPE, NULL);
 102     if ((strlen(cur_locale) < 4) ||
 103         (strcasecmp(cur_locale + strlen(cur_locale) - 4, "utf8")) ||
 104         (strcasecmp(cur_locale + strlen(cur_locale) - 5, "utf-8"))) {
 105       // nope, don't use libc conversion
 106       return FALSE;
 107     }
 108   }
 109 #endif
 110   return TRUE;
 111 }
 112
 113 #ifndef HAVE_WCSLEN
 114 size_t   WXDLLEXPORT wcslen(const wchar_t *s)
 115 {
 116   size_t len = 0;
 117   while (s[len]) len++;
 118   return len;
 119 }
 120 #endif
 121
 122 #if defined(__WIN32__) && defined(wxNEED_WX_CTYPE_H)
 123 inline WORD wxMSW_ctype(wxChar ch)
 124 {
 125   WORD ret;
 126   GetStringTypeEx(LOCALE_USER_DEFAULT, CT_CTYPE1, &ch, 1, &ret);
 127   return ret;
 128 }
 129
 130 WXDLLEXPORT int wxIsalnum(wxChar ch) { return IsCharAlphaNumeric(ch); }
 131 WXDLLEXPORT int wxIsalpha(wxChar ch) { return IsCharAlpha(ch); }
 132 WXDLLEXPORT int wxIsctrl(wxChar ch) { return wxMSW_ctype(ch) & C1_CNTRL; }
 133 WXDLLEXPORT int wxIsdigit(wxChar ch) { return wxMSW_ctype(ch) & C1_DIGIT; }
 134 WXDLLEXPORT int wxIsgraph(wxChar ch) { return wxMSW_ctype(ch) & (C1_DIGIT|C1_PUNCT|C1_ALPHA); }
 135 WXDLLEXPORT int wxIslower(wxChar ch) { return IsCharLower(ch); }
 136 WXDLLEXPORT int wxIsprint(wxChar ch) { return wxMSW_ctype(ch) & (C1_DIGIT|C1_SPACE|C1_PUNCT|C1_ALPHA); }
 137 WXDLLEXPORT int wxIspunct(wxChar ch) { return wxMSW_ctype(ch) & C1_PUNCT; }
 138 WXDLLEXPORT int wxIsspace(wxChar ch) { return wxMSW_ctype(ch) & C1_SPACE; }
 139 WXDLLEXPORT int wxIsupper(wxChar ch) { return IsCharUpper(ch); }
 140 WXDLLEXPORT int wxIsxdigit(wxChar ch) { return wxMSW_ctype(ch) & C1_XDIGIT; }
 141 WXDLLEXPORT int wxTolower(wxChar ch) { return (wxChar)CharLower((LPTSTR)(ch)); }
 142 WXDLLEXPORT int wxToupper(wxChar ch) { return (wxChar)CharUpper((LPTSTR)(ch)); }
 143 #endif
 144
 145 #ifndef wxStrdup
 146 WXDLLEXPORT wxChar * wxStrdup(const wxChar *psz)
 147 {
 148   size_t size = (wxStrlen(psz) + 1) * sizeof(wxChar);
 149   wxChar *ret = (wxChar *) malloc(size);
 150   memcpy(ret, psz, size);
 151   return ret;
 152 }
 153 #endif
 154
 155 #ifndef wxStricmp
 156 int WXDLLEXPORT wxStricmp(const wxChar *psz1, const wxChar *psz2)
 157 {
 158   register wxChar c1, c2;
 159   do {
 160     c1 = wxTolower(*psz1++);
 161     c2 = wxTolower(*psz2++);
 162   } while ( c1 && (c1 == c2) );
 163   return c1 - c2;
 164 }
 165 #endif
 166
 167 #ifndef wxStricmp
 168 int WXDLLEXPORT wxStrnicmp(const wxChar *s1, const wxChar *s2, size_t n)
 169 {
 170   register wxChar c1, c2;
 171   while (n && ((c1 = wxTolower(*s1)) == (c2 = wxTolower(*s2)) ) && c1) n--, s1++, s2++;
 172   if (n) {
 173     if (c1 < c2) return -1;
 174     if (c1 > c2) return 1;
 175   }
 176   return 0;
 177 }
 178 #endif
 179
 180 #ifndef wxStrtok
 181 WXDLLEXPORT wxChar * wxStrtok(wxChar *psz, const wxChar *delim, wxChar **save_ptr)
 182 {
 183   if (!psz) psz = *save_ptr;
 184   psz += wxStrspn(psz, delim);
 185   if (!*psz) {
 186     *save_ptr = (wxChar *)NULL;
 187     return (wxChar *)NULL;
 188   }
 189   wxChar *ret = psz;
 190   psz = wxStrpbrk(psz, delim);
 191   if (!psz) *save_ptr = (wxChar*)NULL;
 192   else {
 193     *psz = wxT('\0');
 194     *save_ptr = psz + 1;
 195   }
 196   return ret;
 197 }
 198 #endif
 199
 200 #ifndef wxSetlocale
 201 WXDLLEXPORT wxWCharBuffer wxSetlocale(int category, const wxChar *locale)
 202 {
 203     char *localeOld = setlocale(category, wxConvLibc.cWX2MB(locale));
 204
 205     return wxWCharBuffer(wxConvLibc.cMB2WC(localeOld));
 206 }
 207 #endif
 208
 209 #ifdef wxNEED_WX_STRING_H
 210 WXDLLEXPORT wxChar * wxStrcat(wxChar *dest, const wxChar *src)
 211 {
 212   wxChar *ret = dest;
 213   while (*dest) dest++;
 214   while ((*dest++ = *src++));
 215   return ret;
 216 }
 217
 218 WXDLLEXPORT const wxChar * wxStrchr(const wxChar *s, wxChar c)
 219 {
 220     // be careful here as the terminating NUL makes part of the string
 221     while ( *s != c )
 222     {
 223         if ( !*s++ )
 224             return NULL;
 225     }
 226
 227     return s;
 228 }
 229
 230 WXDLLEXPORT int wxStrcmp(const wxChar *s1, const wxChar *s2)
 231 {
 232   while ((*s1 == *s2) && *s1) s1++, s2++;
 233   if ((wxUChar)*s1 < (wxUChar)*s2) return -1;
 234   if ((wxUChar)*s1 > (wxUChar)*s2) return 1;
 235   return 0;
 236 }
 237
 238 WXDLLEXPORT wxChar * wxStrcpy(wxChar *dest, const wxChar *src)
 239 {
 240   wxChar *ret = dest;
 241   while ((*dest++ = *src++));
 242   return ret;
 243 }
 244
 245 WXDLLEXPORT wxChar * wxStrncat(wxChar *dest, const wxChar *src, size_t n)
 246 {
 247   wxChar *ret = dest;
 248   while (*dest) dest++;
 249   while (n && (*dest++ = *src++)) n--;
 250   return ret;
 251 }
 252
 253 WXDLLEXPORT int wxStrncmp(const wxChar *s1, const wxChar *s2, size_t n)
 254 {
 255   while (n && (*s1 == *s2) && *s1) n--, s1++, s2++;
 256   if (n) {
 257     if ((wxUChar)*s1 < (wxUChar)*s2) return -1;
 258     if ((wxUChar)*s1 > (wxUChar)*s2) return 1;
 259   }
 260   return 0;
 261 }
 262
 263 WXDLLEXPORT wxChar * wxStrncpy(wxChar *dest, const wxChar *src, size_t n)
 264 {
 265   wxChar *ret = dest;
 266   while (n && (*dest++ = *src++)) n--;
 267   while (n) *dest++=0, n--; // the docs specify padding with zeroes
 268   return ret;
 269 }
 270
 271 WXDLLEXPORT const wxChar * wxStrpbrk(const wxChar *s, const wxChar *accept)
 272 {
 273   while (*s && !wxStrchr(accept, *s))
 274       s++;
 275
 276   return *s ? s : NULL;
 277 }
 278
 279 WXDLLEXPORT const wxChar * wxStrrchr(const wxChar *s, wxChar c)
 280 {
 281     const wxChar *ret = NULL;
 282     do
 283     {
 284         if ( *s == c )
 285             ret = s;
 286         s++;
 287     }
 288     while ( *s );
 289
 290     return ret;
 291 }
 292
 293 WXDLLEXPORT size_t wxStrspn(const wxChar *s, const wxChar *accept)
 294 {
 295   size_t len = 0;
 296   while (wxStrchr(accept, *s++)) len++;
 297   return len;
 298 }
 299
 300 WXDLLEXPORT const wxChar *wxStrstr(const wxChar *haystack, const wxChar *needle)
 301 {
 302     wxCHECK_RET( needle, NULL, _T("NULL argument in wxStrstr") );
 303
 304     // VZ: this is not exactly the most efficient string search algorithm...
 305
 306     const size_t len = wxStrlen(needle);
 307
 308     while ( const wxChar *fnd = wxStrchr(haystack, *needle) )
 309     {
 310         if ( !wxStrncmp(fnd, needle, len) )
 311             return fnd;
 312
 313         haystack = fnd + 1;
 314     }
 315
 316     return NULL;
 317 }
 318
 319 WXDLLEXPORT double wxStrtod(const wxChar *nptr, wxChar **endptr)
 320 {
 321   const wxChar *start = nptr;
 322
 323   // FIXME: only correct for C locale
 324   while (wxIsspace(*nptr)) nptr++;
 325   if (*nptr == wxT('+') || *nptr == wxT('-')) nptr++;
 326   while (wxIsdigit(*nptr)) nptr++;
 327   if (*nptr == wxT('.')) {
 328     nptr++;
 329     while (wxIsdigit(*nptr)) nptr++;
 330   }
 331   if (*nptr == wxT('E') || *nptr == wxT('e')) {
 332     nptr++;
 333     if (*nptr == wxT('+') || *nptr == wxT('-')) nptr++;
 334     while (wxIsdigit(*nptr)) nptr++;
 335   }
 336
 337   wxString data(nptr, nptr-start);
 338   wxWX2MBbuf dat = data.mb_str(wxConvLibc);
 339   char *rdat = wxMBSTRINGCAST dat;
 340   double ret = strtod(dat, &rdat);
 341
 342   if (endptr) *endptr = (wxChar *)(start + (rdat - (const char *)dat));
 343
 344   return ret;
 345 }
 346
 347 WXDLLEXPORT long int wxStrtol(const wxChar *nptr, wxChar **endptr, int base)
 348 {
 349   const wxChar *start = nptr;
 350
 351   // FIXME: only correct for C locale
 352   while (wxIsspace(*nptr)) nptr++;
 353   if (*nptr == wxT('+') || *nptr == wxT('-')) nptr++;
 354   if (((base == 0) || (base == 16)) &&
 355       (nptr[0] == wxT('0') && nptr[1] == wxT('x'))) {
 356     nptr += 2;
 357     base = 16;
 358   }
 359   else if ((base == 0) && (nptr[0] == wxT('0'))) base = 8;
 360   else if (base == 0) base = 10;
 361
 362   while ((wxIsdigit(*nptr) && (*nptr - wxT('0') < base)) ||
 363          (wxIsalpha(*nptr) && (wxToupper(*nptr) - wxT('A') + 10 < base))) nptr++;
 364
 365   wxString data(nptr, nptr-start);
 366   wxWX2MBbuf dat = data.mb_str(wxConvLibc);
 367   char *rdat = wxMBSTRINGCAST dat;
 368   long int ret = strtol(dat, &rdat, base);
 369
 370   if (endptr) *endptr = (wxChar *)(start + (rdat - (const char *)dat));
 371
 372   return ret;
 373 }
 374 #endif
 375
 376 #ifdef wxNEED_WX_STDIO_H
 377 WXDLLEXPORT FILE * wxFopen(const wxChar *path, const wxChar *mode)
 378 {
 379     return fopen( wxConvFile.cWX2MB(path), wxConvLibc.cWX2MB(mode) );
 380 }
 381
 382 WXDLLEXPORT FILE * wxFreopen(const wxChar *path, const wxChar *mode, FILE *stream)
 383 {
 384     return freopen( wxConvFile.cWX2MB(path), wxConvLibc.cWX2MB(mode), stream );
 385 }
 386
 387 WXDLLEXPORT int wxRemove(const wxChar *path)
 388 {
 389     return remove( wxConvFile.cWX2MB(path) );
 390 }
 391
 392 WXDLLEXPORT int wxRename(const wxChar *oldpath, const wxChar *newpath)
 393 {
 394     return rename( wxConvFile.cWX2MB(oldpath), wxConvFile.cWX2MB(newpath) );
 395 }
 396 #endif
 397
 398 #ifndef wxAtof
 399 double   WXDLLEXPORT wxAtof(const wxChar *psz)
 400 {
 401   return atof(wxConvLibc.cWX2MB(psz));
 402 }
 403 #endif
 404
 405 #ifdef wxNEED_WX_STDLIB_H
 406 int      WXDLLEXPORT wxAtoi(const wxChar *psz)
 407 {
 408   return atoi(wxConvLibc.cWX2MB(psz));
 409 }
 410
 411 long     WXDLLEXPORT wxAtol(const wxChar *psz)
 412 {
 413   return atol(wxConvLibc.cWX2MB(psz));
 414 }
 415
 416 wxChar * WXDLLEXPORT wxGetenv(const wxChar *name)
 417 {
 418   static wxHashTable env;
 419
 420   // check if we already have stored the converted env var
 421   wxObject *data = env.Get(name);
 422   if (!data)
 423   {
 424     // nope, retrieve it,
 425 #if wxUSE_UNICODE
 426     wxCharBuffer buffer = wxConvLibc.cWX2MB(name);
 427     // printf( "buffer %s\n", (const char*) buffer );
 428     const char *val = getenv( (const char *)buffer );
 429 #else
 430     const char *val = getenv( name );
 431 #endif
 432
 433     if (!val) return (wxChar *)NULL;
 434     // printf( "home %s\n", val );
 435
 436     // convert it,
 437 #ifdef wxUSE_UNICODE
 438     data = (wxObject *)new wxString(val, wxConvLibc);
 439 #else
 440     data = (wxObject *)new wxString(val);
 441 #endif
 442
 443     // and store it
 444     env.Put(name, data);
 445   }
 446   // return converted env var
 447   return (wxChar *)((wxString *)data)->c_str();
 448 }
 449
 450 int      WXDLLEXPORT wxSystem(const wxChar *psz)
 451 {
 452   return system(wxConvLibc.cWX2MB(psz));
 453 }
 454
 455 #endif
 456
 457 #ifdef wxNEED_WX_TIME_H
 458 WXDLLEXPORT size_t   wxStrftime(wxChar *s, size_t max, const wxChar *fmt, const struct tm *tm)
 459 {
 460   if (!max) return 0;
 461   char *buf = (char *)malloc(max);
 462   size_t ret = strftime(buf, max, wxConvLibc.cWX2MB(fmt), tm);
 463   if (ret) {
 464     wxStrcpy(s, wxConvLibc.cMB2WX(buf));
 465     free(buf);
 466     return wxStrlen(s);
 467   } else {
 468     free(buf);
 469     *s = 0;
 470     return 0;
 471   }
 472 }
 473 #endif