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;
 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 int WXDLLEXPORT wxIsalnum(wxChar ch) { return IsCharAlphaNumeric(ch); }
 134 int WXDLLEXPORT wxIsalpha(wxChar ch) { return IsCharAlpha(ch); }
 135 int WXDLLEXPORT wxIsctrl(wxChar ch) { return wxMSW_ctype(ch) & C1_CNTRL; }
 136 int WXDLLEXPORT wxIsdigit(wxChar ch) { return wxMSW_ctype(ch) & C1_DIGIT; }
 137 int WXDLLEXPORT wxIsgraph(wxChar ch) { return wxMSW_ctype(ch) & (C1_DIGIT|C1_PUNCT|C1_ALPHA); }
 138 int WXDLLEXPORT wxIslower(wxChar ch) { return IsCharLower(ch); }
 139 int WXDLLEXPORT wxIsprint(wxChar ch) { return wxMSW_ctype(ch) & (C1_DIGIT|C1_SPACE|C1_PUNCT|C1_ALPHA); }
 140 int WXDLLEXPORT wxIspunct(wxChar ch) { return wxMSW_ctype(ch) & C1_PUNCT; }
 141 int WXDLLEXPORT wxIsspace(wxChar ch) { return wxMSW_ctype(ch) & C1_SPACE; }
 142 int WXDLLEXPORT wxIsupper(wxChar ch) { return IsCharUpper(ch); }
 143 int WXDLLEXPORT wxIsxdigit(wxChar ch) { return wxMSW_ctype(ch) & C1_XDIGIT; }
 144 int WXDLLEXPORT wxTolower(wxChar ch) { return (wxChar)CharLower((LPTSTR)(ch)); }
 145 int WXDLLEXPORT wxToupper(wxChar ch) { return (wxChar)CharUpper((LPTSTR)(ch)); }
 146 #endif
 147
 148 #ifndef wxStrdup
 149 wxChar * WXDLLEXPORT 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 wxChar * WXDLLEXPORT 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 wxChar * WXDLLEXPORT wxSetlocale(int category, const wxChar *locale)
 192 {
 193   setlocale(category, wxConv_libc.cWX2MB(locale));
 194   // FIXME
 195   return (wxChar *)NULL;
 196 }
 197 #endif
 198
 199 #ifdef wxNEED_WX_STDIO_H
 200 int WXDLLEXPORT wxPrintf(const wxChar *fmt, ...)
 201 {
 202   va_list argptr;
 203   int ret;
 204
 205   va_start(argptr, fmt);
 206   ret = wxVprintf(fmt, argptr);
 207   va_end(argptr);
 208   return ret;
 209 }
 210
 211 int WXDLLEXPORT wxVprintf(const wxChar *fmt, va_list argptr)
 212 {
 213   wxString str;
 214   str.PrintfV(fmt,argptr);
 215   printf("%s", (const char*)str.mb_str());
 216   return str.Len();
 217 }
 218
 219 int WXDLLEXPORT wxFprintf(FILE *stream, const wxChar *fmt, ...)
 220 {
 221   va_list argptr;
 222   int ret;
 223
 224   va_start(argptr, fmt);
 225   ret = wxVfprintf(stream, fmt, argptr);
 226   va_end(argptr);
 227   return ret;
 228 }
 229
 230 int WXDLLEXPORT wxVfprintf(FILE *stream, const wxChar *fmt, va_list argptr)
 231 {
 232   wxString str;
 233   str.PrintfV(fmt,argptr);
 234   fprintf(stream, "%s", (const char*)str.mb_str());
 235   return str.Len();
 236 }
 237
 238 int WXDLLEXPORT wxSprintf(wxChar *buf, const wxChar *fmt, ...)
 239 {
 240   va_list argptr;
 241   int ret;
 242
 243   va_start(argptr, fmt);
 244   ret = wxVsprintf(buf, fmt, argptr);
 245   va_end(argptr);
 246   return ret;
 247 }
 248
 249 int WXDLLEXPORT wxVsprintf(wxChar *buf, const wxChar *fmt, va_list argptr)
 250 {
 251   // this might be sort of inefficient, but it doesn't matter since
 252   // we'd prefer people to use wxString::Printf directly instead anyway
 253   wxString str;
 254   str.PrintfV(fmt,argptr);
 255   wxStrcpy(buf,str.c_str());
 256   return str.Len();
 257 }
 258
 259 int WXDLLEXPORT wxSscanf(const wxChar *buf, const wxChar *fmt, ...)
 260 {
 261   va_list argptr;
 262   int ret;
 263
 264   va_start(argptr, fmt);
 265   ret = wxVsscanf(buf, fmt, argptr);
 266   va_end(argptr);
 267   return ret;
 268 }
 269
 270 int WXDLLEXPORT wxVsscanf(const wxChar *buf, const wxChar *fmt, va_list argptr)
 271 {
 272   int ret;
 273   // this will work only for numeric conversion! Strings will not be converted correctly
 274   // hopefully this is all we'll need
 275   ret = vsscanf(wxConv_libc.cWX2MB(buf), wxConv_libc.cWX2MB(fmt), argptr);
 276   return ret;
 277 }
 278 #endif
 279
 280 #ifndef wxAtof
 281 double   WXDLLEXPORT wxAtof(const wxChar *psz)
 282 {
 283   return atof(wxConv_libc.cWX2MB(psz));
 284 }
 285 #endif
 286
 287 #ifdef wxNEED_WX_STDLIB_H
 288 int      WXDLLEXPORT wxAtoi(const wxChar *psz)
 289 {
 290   return atoi(wxConv_libc.cWX2MB(psz));
 291 }
 292
 293 long     WXDLLEXPORT wxAtol(const wxChar *psz)
 294 {
 295   return atol(wxConv_libc.cWX2MB(psz));
 296 }
 297
 298 wxChar * WXDLLEXPORT wxGetenv(const wxChar *name)
 299 {
 300   static wxHashTable env;
 301   // check if we already have stored the converted env var
 302   wxObject *data = env.Get(name);
 303   if (!data) {
 304     // nope, retrieve it,
 305     const char *val = getenv(wxConv_libc.cWX2MB(name));
 306     if (!val) return (wxChar *)NULL;
 307     // convert it,
 308     data = (wxObject *)new wxString(val);
 309     // and store it
 310     env.Put(name, data);
 311   }
 312   // return converted env var
 313   return (wxChar *)((wxString *)data)->c_str();
 314 }
 315
 316 int      WXDLLEXPORT wxSystem(const wxChar *psz)
 317 {
 318   return system(wxConv_libc.cWX2MB(psz));
 319 }
 320
 321 #endif