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 wxUSE_WCHAR_T
  43 size_t WXDLLEXPORT wxMB2WC(wchar_t *buf, const char *psz, size_t n)
  44 {
  45   if (buf) {
  46     if (!n || !*psz) {
  47       if (n) *buf = _T('\0');
  48       return 0;
  49     }
  50     return mbstowcs(buf, psz, n);
  51   }
  52
  53   // NB: GNU libc5 wcstombs() is completely broken, don't use it (it doesn't
  54   //     honor the 3rd parameter, thus it will happily crash here).
  55 #if wxUSE_WCSRTOMBS
  56   // don't know if it's really needed (or if we can pass NULL), but better safe
  57   // than quick
  58   mbstate_t mbstate;
  59   return mbsrtowcs((wchar_t *) NULL, &psz, 0, &mbstate);
  60 #else  // !GNU libc
  61   return mbstowcs((wchar_t *) NULL, psz, 0);
  62 #endif // GNU
  63 }
  64
  65 size_t WXDLLEXPORT wxWC2MB(char *buf, const wchar_t *pwz, size_t n)
  66 {
  67   if (buf) {
  68     if (!n || !*pwz) {
  69       // glibc2.1 chokes on null input
  70       if (n) *buf = '\0';
  71       return 0;
  72     }
  73     return wcstombs(buf, pwz, n);
  74   }
  75
  76   // NB: GNU libc5 wcstombs() is completely broken, don't use it (it doesn't
  77   //     honor the 3rd parameter, thus it will happily crash here).
  78 #if wxUSE_WCSRTOMBS
  79   // don't know if it's really needed (or if we can pass NULL), but better safe
  80   // than quick
  81   mbstate_t mbstate;
  82   return wcsrtombs((char *) NULL, &pwz, 0, &mbstate);
  83 #else  // !GNU libc
  84   return wcstombs((char *) NULL, pwz, 0);
  85 #endif // GNU
  86 }
  87 #endif
  88
  89 bool WXDLLEXPORT wxOKlibc()
  90 {
  91 #if wxUSE_WCHAR_T && defined(__UNIX__) && defined(__GLIBC__)
  92   // GNU libc uses UTF-8 even when it shouldn't
  93   wchar_t res;
  94   if ((MB_CUR_MAX == 2) &&
  95       (wxMB2WC(&res, "\xdd\xa5", 1)>0) &&
  96       (res==0x765)) {
  97     // this is UTF-8 allright, check whether that's what we want
  98     char *cur_locale = setlocale(LC_ALL, NULL);
  99     if ((strlen(cur_locale) < 4) ||
 100         (strcasecmp(cur_locale + strlen(cur_locale) - 4, "utf8"))) {
 101       // nope, don't use libc conversion
 102       return FALSE;
 103     }
 104   }
 105 #endif
 106   return TRUE;
 107 }
 108
 109 #ifdef wxNEED_WCSLEN
 110 size_t   WXDLLEXPORT wcslen(const wchar_t *s)
 111 {
 112   size_t len;
 113   while (s[len]) len++;
 114   return len;
 115 }
 116 #endif
 117
 118 #ifndef wxStrdup
 119 wxChar * WXDLLEXPORT wxStrdup(const wxChar *psz)
 120 {
 121   size_t size = (wxStrlen(psz) + 1) * sizeof(wxChar);
 122   wxChar *ret = (wxChar *) malloc(size);
 123   memcpy(ret, psz, size);
 124   return ret;
 125 }
 126 #endif
 127
 128 #ifndef wxStricmp
 129 int WXDLLEXPORT wxStricmp(const wxChar *psz1, const wxChar *psz2)
 130 {
 131   register wxChar c1, c2;
 132   do {
 133     c1 = wxTolower(*psz1++);
 134     c2 = wxTolower(*psz2++);
 135   } while ( c1 && (c1 == c2) );
 136   return c1 - c2;
 137 }
 138 #endif
 139
 140 #ifndef wxStrtok
 141 wxChar * WXDLLEXPORT wxStrtok(wxChar *psz, const wxChar *delim, wxChar **save_ptr)
 142 {
 143   if (!psz) psz = *save_ptr;
 144   psz += wxStrspn(psz, delim);
 145   if (!*psz) {
 146     *save_ptr = (wxChar *)NULL;
 147     return (wxChar *)NULL;
 148   }
 149   wxChar *ret = psz;
 150   psz = wxStrpbrk(psz, delim);
 151   if (!psz) *save_ptr = (wxChar*)NULL;
 152   else {
 153     *psz = _T('\0');
 154     *save_ptr = psz + 1;
 155   }
 156   return ret;
 157 }
 158 #endif
 159
 160 #ifndef wxSetlocale
 161 wxChar * WXDLLEXPORT wxSetlocale(int category, const wxChar *locale)
 162 {
 163   setlocale(category, wxConv_libc.cWX2MB(locale));
 164   // FIXME
 165   return (wxChar *)NULL;
 166 }
 167 #endif
 168
 169 #ifdef wxNEED_WX_STDIO_H
 170 int WXDLLEXPORT wxPrintf(const wxChar *fmt, ...)
 171 {
 172   va_list argptr;
 173   int ret;
 174
 175   va_start(argptr, fmt);
 176   ret = wxVprintf(fmt, argptr);
 177   va_end(argptr);
 178   return ret;
 179 }
 180
 181 int WXDLLEXPORT wxVprintf(const wxChar *fmt, va_list argptr)
 182 {
 183   wxString str;
 184   str.PrintfV(fmt,argptr);
 185   printf("%s", (const char*)str.mb_str());
 186   return str.Len();
 187 }
 188
 189 int WXDLLEXPORT wxFprintf(FILE *stream, const wxChar *fmt, ...)
 190 {
 191   va_list argptr;
 192   int ret;
 193
 194   va_start(argptr, fmt);
 195   ret = wxVfprintf(stream, fmt, argptr);
 196   va_end(argptr);
 197   return ret;
 198 }
 199
 200 int WXDLLEXPORT wxVfprintf(FILE *stream, const wxChar *fmt, va_list argptr)
 201 {
 202   wxString str;
 203   str.PrintfV(fmt,argptr);
 204   fprintf(stream, "%s", (const char*)str.mb_str());
 205   return str.Len();
 206 }
 207
 208 int WXDLLEXPORT wxSprintf(wxChar *buf, const wxChar *fmt, ...)
 209 {
 210   va_list argptr;
 211   int ret;
 212
 213   va_start(argptr, fmt);
 214   ret = wxVsprintf(buf, fmt, argptr);
 215   va_end(argptr);
 216   return ret;
 217 }
 218
 219 int WXDLLEXPORT wxVsprintf(wxChar *buf, const wxChar *fmt, va_list argptr)
 220 {
 221   // this might be sort of inefficient, but it doesn't matter since
 222   // we'd prefer people to use wxString::Printf directly instead anyway
 223   wxString str;
 224   str.PrintfV(fmt,argptr);
 225   wxStrcpy(buf,str.c_str());
 226   return str.Len();
 227 }
 228
 229 int WXDLLEXPORT wxSscanf(const wxChar *buf, const wxChar *fmt, ...)
 230 {
 231   va_list argptr;
 232   int ret;
 233
 234   va_start(argptr, fmt);
 235   ret = wxVsscanf(buf, fmt, argptr);
 236   va_end(argptr);
 237   return ret;
 238 }
 239
 240 int WXDLLEXPORT wxVsscanf(const wxChar *buf, const wxChar *fmt, va_list argptr)
 241 {
 242   int ret;
 243   // this will work only for numeric conversion! Strings will not be converted correctly
 244   // hopefully this is all we'll need
 245   ret = vsscanf(wxConv_libc.cWX2MB(buf), wxConv_libc.cWX2MB(fmt), argptr);
 246   return ret;
 247 }
 248 #endif
 249
 250 #ifndef wxAtof
 251 double   WXDLLEXPORT wxAtof(const wxChar *psz)
 252 {
 253   return atof(wxConv_libc.cWX2MB(psz));
 254 }
 255 #endif
 256
 257 #ifdef wxNEED_WX_STDLIB_H
 258 int      WXDLLEXPORT wxAtoi(const wxChar *psz)
 259 {
 260   return atoi(wxConv_libc.cWX2MB(psz));
 261 }
 262
 263 long     WXDLLEXPORT wxAtol(const wxChar *psz)
 264 {
 265   return atol(wxConv_libc.cWX2MB(psz));
 266 }
 267
 268 wxChar * WXDLLEXPORT wxGetenv(const wxChar *name)
 269 {
 270   static wxHashTable env;
 271   // check if we already have stored the converted env var
 272   wxObject *data = env.Get(name);
 273   if (!data) {
 274     // nope, retrieve it,
 275     const char *val = getenv(wxConv_libc.cWX2MB(name));
 276     if (!val) return (wxChar *)NULL;
 277     // convert it,
 278     data = (wxObject *)new wxString(val);
 279     // and store it
 280     env.Put(name, data);
 281   }
 282   // return converted env var
 283   return (wxChar *)((wxString *)data)->c_str();
 284 }
 285
 286 int      WXDLLEXPORT wxSystem(const wxChar *psz)
 287 {
 288   return system(wxConv_libc.cWX2MB(psz));
 289 }
 290
 291 #endif