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
  35 #ifndef WX_PRECOMP
  36   #include "wx/defs.h"
  37   #include "wx/wxchar.h"
  38   #include "wx/string.h"
  39   #include "wx/hash.h"
  40 #endif
  41
  42 #if defined(__WIN32__) && defined(wxNEED_WX_CTYPE_H)
  43 #include <windef.h>
  44 #include <winbase.h>
  45 #include <winnls.h>
  46 #include <winnt.h>
  47 #endif
  48
  49 #if wxUSE_WCHAR_T
  50 size_t WXDLLEXPORT wxMB2WC(wchar_t *buf, const char *psz, size_t n)
  51 {
  52   if (buf) {
  53     if (!n || !*psz) {
  54       if (n) *buf = _T('\0');
  55       return 0;
  56     }
  57     return mbstowcs(buf, psz, n);
  58   }
  59
  60   // NB: GNU libc5 wcstombs() is completely broken, don't use it (it doesn't
  61   //     honor the 3rd parameter, thus it will happily crash here).
  62 #if wxUSE_WCSRTOMBS
  63   // don't know if it's really needed (or if we can pass NULL), but better safe
  64   // than quick
  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   // NB: GNU libc5 wcstombs() is completely broken, don't use it (it doesn't
  84   //     honor the 3rd parameter, thus it will happily crash here).
  85 #if wxUSE_WCSRTOMBS
  86   // don't know if it's really needed (or if we can pass NULL), but better safe
  87   // than quick
  88   mbstate_t mbstate;
  89   return wcsrtombs((char *) NULL, &pwz, 0, &mbstate);
  90 #else  // !GNU libc
  91   return wcstombs((char *) NULL, pwz, 0);
  92 #endif // GNU
  93 }
  94 #endif
  95
  96 bool WXDLLEXPORT wxOKlibc()
  97 {
  98 #if wxUSE_WCHAR_T && defined(__UNIX__) && defined(__GLIBC__)
  99   // GNU libc uses UTF-8 even when it shouldn't
 100   wchar_t res;
 101   if ((MB_CUR_MAX == 2) &&
 102       (wxMB2WC(&res, "\xdd\xa5", 1)>0) &&
 103       (res==0x765)) {
 104     // this is UTF-8 allright, check whether that's what we want
 105     char *cur_locale = setlocale(LC_ALL, NULL);
 106     if ((strlen(cur_locale) < 4) ||
 107         (strcasecmp(cur_locale + strlen(cur_locale) - 4, "utf8"))) {
 108       // nope, don't use libc conversion
 109       return FALSE;
 110     }
 111   }
 112 #endif
 113   return TRUE;
 114 }
 115
 116 #ifndef HAVE_WCSLEN
 117 size_t   WXDLLEXPORT wcslen(const wchar_t *s)
 118 {
 119   size_t len = 0;
 120   while (s[len]) len++;
 121   return len;
 122 }
 123 #endif
 124
 125 #if defined(__WIN32__) && defined(wxNEED_WX_CTYPE_H)
 126 inline WORD wxMSW_ctype(wxChar ch)
 127 {
 128   WORD ret;
 129   GetStringTypeEx(LOCALE_USER_DEFAULT, CT_CTYPE1, &ch, 1, &ret);
 130   return ret;
 131 }
 132
 133 WXDLLEXPORT int wxIsalnum(wxChar ch) { return IsCharAlphaNumeric(ch); }
 134 WXDLLEXPORT int wxIsalpha(wxChar ch) { return IsCharAlpha(ch); }
 135 WXDLLEXPORT int wxIsctrl(wxChar ch) { return wxMSW_ctype(ch) & C1_CNTRL; }
 136 WXDLLEXPORT int wxIsdigit(wxChar ch) { return wxMSW_ctype(ch) & C1_DIGIT; }
 137 WXDLLEXPORT int wxIsgraph(wxChar ch) { return wxMSW_ctype(ch) & (C1_DIGIT|C1_PUNCT|C1_ALPHA); }
 138 WXDLLEXPORT int wxIslower(wxChar ch) { return IsCharLower(ch); }
 139 WXDLLEXPORT int wxIsprint(wxChar ch) { return wxMSW_ctype(ch) & (C1_DIGIT|C1_SPACE|C1_PUNCT|C1_ALPHA); }
 140 WXDLLEXPORT int wxIspunct(wxChar ch) { return wxMSW_ctype(ch) & C1_PUNCT; }
 141 WXDLLEXPORT int wxIsspace(wxChar ch) { return wxMSW_ctype(ch) & C1_SPACE; }
 142 WXDLLEXPORT int wxIsupper(wxChar ch) { return IsCharUpper(ch); }
 143 WXDLLEXPORT int wxIsxdigit(wxChar ch) { return wxMSW_ctype(ch) & C1_XDIGIT; }
 144 WXDLLEXPORT int wxTolower(wxChar ch) { return (wxChar)CharLower((LPTSTR)(ch)); }
 145 WXDLLEXPORT int wxToupper(wxChar ch) { return (wxChar)CharUpper((LPTSTR)(ch)); }
 146 #endif
 147
 148 #ifndef wxStrdup
 149 WXDLLEXPORT wxChar * wxStrdup(const wxChar *psz)
 150 {
 151   size_t size = (wxStrlen(psz) + 1) * sizeof(wxChar);
 152   wxChar *ret = (wxChar *) malloc(size);
 153   memcpy(ret, psz, size);
 154   return ret;
 155 }
 156 #endif
 157
 158 #ifndef wxStricmp
 159 int WXDLLEXPORT wxStricmp(const wxChar *psz1, const wxChar *psz2)
 160 {
 161   register wxChar c1, c2;
 162   do {
 163     c1 = wxTolower(*psz1++);
 164     c2 = wxTolower(*psz2++);
 165   } while ( c1 && (c1 == c2) );
 166   return c1 - c2;
 167 }
 168 #endif
 169
 170 #ifndef wxStrtok
 171 WXDLLEXPORT wxChar * wxStrtok(wxChar *psz, const wxChar *delim, wxChar **save_ptr)
 172 {
 173   if (!psz) psz = *save_ptr;
 174   psz += wxStrspn(psz, delim);
 175   if (!*psz) {
 176     *save_ptr = (wxChar *)NULL;
 177     return (wxChar *)NULL;
 178   }
 179   wxChar *ret = psz;
 180   psz = wxStrpbrk(psz, delim);
 181   if (!psz) *save_ptr = (wxChar*)NULL;
 182   else {
 183     *psz = _T('\0');
 184     *save_ptr = psz + 1;
 185   }
 186   return ret;
 187 }
 188 #endif
 189
 190 #ifndef wxSetlocale
 191 WXDLLEXPORT wxChar * wxSetlocale(int category, const wxChar *locale)
 192 {
 193   setlocale(category, wxConvLibc.cWX2MB(locale));
 194   // FIXME
 195   return (wxChar *)NULL;
 196 }
 197 #endif
 198
 199 #ifdef wxNEED_WX_STRING_H
 200 WXDLLEXPORT wxChar * wxStrcat(wxChar *dest, const wxChar *src)
 201 {
 202   wxChar *ret = dest;
 203   while (*dest) dest++;
 204   while ((*dest++ = *src++));
 205   return ret;
 206 }
 207
 208 WXDLLEXPORT wxChar * wxStrchr(const wxChar *s, wxChar c)
 209 {
 210   while (*s && *s != c) s++;
 211   return (*s) ? (wxChar *)s : (wxChar *)NULL;
 212 }
 213
 214 WXDLLEXPORT int wxStrcmp(const wxChar *s1, const wxChar *s2)
 215 {
 216   while ((*s1 == *s2) && *s1) s1++, s2++;
 217   if ((wxUChar)*s1 < (wxUChar)*s2) return -1;
 218   if ((wxUChar)*s1 > (wxUChar)*s2) return 1;
 219   return 0;
 220 }
 221
 222 WXDLLEXPORT wxChar * wxStrcpy(wxChar *dest, const wxChar *src)
 223 {
 224   wxChar *ret = dest;
 225   while ((*dest++ = *src++));
 226   return ret;
 227 }
 228
 229 WXDLLEXPORT wxChar * wxStrncat(wxChar *dest, const wxChar *src, size_t n)
 230 {
 231   wxChar *ret = dest;
 232   while (*dest) dest++;
 233   while (n && (*dest++ = *src++)) n--;
 234   return ret;
 235 }
 236
 237 WXDLLEXPORT int wxStrncmp(const wxChar *s1, const wxChar *s2, size_t n)
 238 {
 239   while (n && (*s1 == *s2) && *s1) n--, s1++, s2++;
 240   if (n) {
 241     if ((wxUChar)*s1 < (wxUChar)*s2) return -1;
 242     if ((wxUChar)*s1 > (wxUChar)*s2) return 1;
 243   }
 244   return 0;
 245 }
 246
 247 WXDLLEXPORT wxChar * wxStrncpy(wxChar *dest, const wxChar *src, size_t n)
 248 {
 249   wxChar *ret = dest;
 250   while (n && (*dest++ = *src++)) n--;
 251   while (n) *dest++=0, n--; // the docs specify padding with zeroes
 252   return ret;
 253 }
 254
 255 WXDLLEXPORT wxChar * wxStrpbrk(const wxChar *s, const wxChar *accept)
 256 {
 257   while (*s && !wxStrchr(accept, *s)) s++;
 258   return (*s) ? (wxChar *)s : (wxChar *)NULL;
 259 }
 260
 261 WXDLLEXPORT wxChar * wxStrrchr(const wxChar *s, wxChar c)
 262 {
 263   wxChar *ret = (wxChar *)NULL;
 264   while (*s) {
 265     if (*s == c) ret = (wxChar *)s;
 266     s++;
 267   }
 268   return ret;
 269 }
 270
 271 WXDLLEXPORT size_t wxStrspn(const wxChar *s, const wxChar *accept)
 272 {
 273   size_t len = 0;
 274   while (wxStrchr(accept, *s++)) len++;
 275   return len;
 276 }
 277
 278 WXDLLEXPORT wxChar * wxStrstr(const wxChar *haystack, const wxChar *needle)
 279 {
 280   wxChar *fnd;
 281   while ((fnd = wxStrchr(haystack, *needle))) {
 282     if (!wxStrcmp(fnd, needle)) return fnd;
 283     haystack = fnd + 1;
 284   }
 285   return (wxChar *)NULL;
 286 }
 287
 288 WXDLLEXPORT double wxStrtod(const wxChar *nptr, wxChar **endptr)
 289 {
 290   const wxChar *start = nptr;
 291
 292   // FIXME: only correct for C locale
 293   while (wxIsspace(*nptr)) nptr++;
 294   if (*nptr == _T('+') || *nptr == _T('-')) nptr++;
 295   while (wxIsdigit(*nptr)) nptr++;
 296   if (*nptr == _T('.')) {
 297     nptr++;
 298     while (wxIsdigit(*nptr)) nptr++;
 299   }
 300   if (*nptr == _T('E') || *nptr == _T('e')) {
 301     nptr++;
 302     if (*nptr == _T('+') || *nptr == _T('-')) nptr++;
 303     while (wxIsdigit(*nptr)) nptr++;
 304   }
 305
 306   wxString data(nptr, nptr-start);
 307   wxWX2MBbuf dat = data.mb_str(wxConvLibc);
 308   char *rdat = MBSTRINGCAST dat;
 309   double ret = strtod(dat, &rdat);
 310
 311   if (endptr) *endptr = (wxChar *)(start + (rdat - (const char *)dat));
 312
 313   return ret;
 314 }
 315
 316 WXDLLEXPORT long int wxStrtol(const wxChar *nptr, wxChar **endptr, int base)
 317 {
 318   const wxChar *start = nptr;
 319
 320   // FIXME: only correct for C locale
 321   while (wxIsspace(*nptr)) nptr++;
 322   if (*nptr == _T('+') || *nptr == _T('-')) nptr++;
 323   if (((base == 0) || (base == 16)) &&
 324       (nptr[0] == _T('0') && nptr[1] == _T('x'))) {
 325     nptr += 2;
 326     base = 16;
 327   }
 328   else if ((base == 0) && (nptr[0] == _T('0'))) base = 8;
 329   else if (base == 0) base = 10;
 330
 331   while ((wxIsdigit(*nptr) && (*nptr - _T('0') < base)) ||
 332          (wxIsalpha(*nptr) && (wxToupper(*nptr) - _T('A') + 10 < base))) nptr++;
 333
 334   wxString data(nptr, nptr-start);
 335   wxWX2MBbuf dat = data.mb_str(wxConvLibc);
 336   char *rdat = MBSTRINGCAST dat;
 337   long int ret = strtol(dat, &rdat, base);
 338
 339   if (endptr) *endptr = (wxChar *)(start + (rdat - (const char *)dat));
 340
 341   return ret;
 342 }
 343 #endif
 344
 345 #ifdef wxNEED_WX_STDIO_H
 346 int WXDLLEXPORT wxPrintf(const wxChar *fmt, ...)
 347 {
 348   va_list argptr;
 349   int ret;
 350
 351   va_start(argptr, fmt);
 352   ret = wxVprintf(fmt, argptr);
 353   va_end(argptr);
 354   return ret;
 355 }
 356
 357 int WXDLLEXPORT wxVprintf(const wxChar *fmt, va_list argptr)
 358 {
 359   wxString str;
 360   str.PrintfV(fmt,argptr);
 361   printf("%s", (const char*)str.mb_str());
 362   return str.Len();
 363 }
 364
 365 int WXDLLEXPORT wxFprintf(FILE *stream, const wxChar *fmt, ...)
 366 {
 367   va_list argptr;
 368   int ret;
 369
 370   va_start(argptr, fmt);
 371   ret = wxVfprintf(stream, fmt, argptr);
 372   va_end(argptr);
 373   return ret;
 374 }
 375
 376 int WXDLLEXPORT wxVfprintf(FILE *stream, const wxChar *fmt, va_list argptr)
 377 {
 378   wxString str;
 379   str.PrintfV(fmt,argptr);
 380   fprintf(stream, "%s", (const char*)str.mb_str());
 381   return str.Len();
 382 }
 383
 384 int WXDLLEXPORT wxSprintf(wxChar *buf, const wxChar *fmt, ...)
 385 {
 386   va_list argptr;
 387   int ret;
 388
 389   va_start(argptr, fmt);
 390   ret = wxVsprintf(buf, fmt, argptr);
 391   va_end(argptr);
 392   return ret;
 393 }
 394
 395 int WXDLLEXPORT wxVsprintf(wxChar *buf, const wxChar *fmt, va_list argptr)
 396 {
 397   // this might be sort of inefficient, but it doesn't matter since
 398   // we'd prefer people to use wxString::Printf directly instead anyway
 399   wxString str;
 400   str.PrintfV(fmt,argptr);
 401   wxStrcpy(buf,str.c_str());
 402   return str.Len();
 403 }
 404
 405 int WXDLLEXPORT wxSscanf(const wxChar *buf, const wxChar *fmt, ...)
 406 {
 407   va_list argptr;
 408   int ret;
 409
 410   va_start(argptr, fmt);
 411   ret = wxVsscanf(buf, fmt, argptr);
 412   va_end(argptr);
 413   return ret;
 414 }
 415
 416 int WXDLLEXPORT wxVsscanf(const wxChar *buf, const wxChar *fmt, va_list argptr)
 417 {
 418   int ret;
 419   // this will work only for numeric conversion! Strings will not be converted correctly
 420   // hopefully this is all we'll need
 421   ret = vsscanf(wxConvLibc.cWX2MB(buf), wxConvLibc.cWX2MB(fmt), argptr);
 422   return ret;
 423 }
 424 #endif
 425
 426 #ifndef wxAtof
 427 double   WXDLLEXPORT wxAtof(const wxChar *psz)
 428 {
 429   return atof(wxConvLibc.cWX2MB(psz));
 430 }
 431 #endif
 432
 433 #ifdef wxNEED_WX_STDLIB_H
 434 int      WXDLLEXPORT wxAtoi(const wxChar *psz)
 435 {
 436   return atoi(wxConvLibc.cWX2MB(psz));
 437 }
 438
 439 long     WXDLLEXPORT wxAtol(const wxChar *psz)
 440 {
 441   return atol(wxConvLibc.cWX2MB(psz));
 442 }
 443
 444 wxChar * WXDLLEXPORT wxGetenv(const wxChar *name)
 445 {
 446   static wxHashTable env;
 447   // check if we already have stored the converted env var
 448   wxObject *data = env.Get(name);
 449   if (!data) {
 450     // nope, retrieve it,
 451     const char *val = getenv(wxConvLibc.cWX2MB(name));
 452     if (!val) return (wxChar *)NULL;
 453     // convert it,
 454     data = (wxObject *)new wxString(val);
 455     // and store it
 456     env.Put(name, data);
 457   }
 458   // return converted env var
 459   return (wxChar *)((wxString *)data)->c_str();
 460 }
 461
 462 int      WXDLLEXPORT wxSystem(const wxChar *psz)
 463 {
 464   return system(wxConvLibc.cWX2MB(psz));
 465 }
 466
 467 #endif