include/wx/wxcrt.h

   1 ///////////////////////////////////////////////////////////////////////////////
   2 // Name:        wx/wxcrt.h
   3 // Purpose:     Type-safe ANSI and Unicode builds compatible wrappers for
   4 //              CRT functions
   5 // Author:      Joel Farley, Ove K�ven
   6 // Modified by: Vadim Zeitlin, Robert Roebling, Ron Lee, Vaclav Slavik
   7 // Created:     1998/06/12
   8 // RCS-ID:      $Id$
   9 // Copyright:   (c) 1998-2006 wxWidgets dev team
  10 // Licence:     wxWindows licence
  11 ///////////////////////////////////////////////////////////////////////////////
  12
  13 #ifndef _WX_WXCRT_H_
  14 #define _WX_WXCRT_H_
  15
  16 // NB: User code should include wx/crt.h instead of including this
  17 //     header directly.
  18
  19 #include "wx/wxcrtbase.h"
  20 #include "wx/string.h"
  21
  22 // ============================================================================
  23 //                              misc functions
  24 // ============================================================================
  25
  26 /* checks whether the passed in pointer is NULL and if the string is empty */
  27 inline bool wxIsEmpty(const char *s) { return !s || !*s; }
  28 inline bool wxIsEmpty(const wchar_t *s) { return !s || !*s; }
  29 inline bool wxIsEmpty(const wxCharBuffer& s) { return wxIsEmpty(s.data()); }
  30 inline bool wxIsEmpty(const wxWCharBuffer& s) { return wxIsEmpty(s.data()); }
  31 inline bool wxIsEmpty(const wxString& s) { return s.empty(); }
  32 inline bool wxIsEmpty(const wxCStrData& s) { return s.AsString().empty(); }
  33
  34
  35 // FIXME-UTF8: get rid of this, it's ANSI only anyway
  36 WXDLLIMPEXP_BASE bool wxOKlibc(); /* for internal use */
  37
  38
  39 /* multibyte to wide char conversion functions and macros */
  40
  41 #if wxUSE_WCHAR_T
  42     /* multibyte<->widechar conversion */
  43     WXDLLIMPEXP_BASE size_t wxMB2WC(wchar_t *buf, const char *psz, size_t n);
  44     WXDLLIMPEXP_BASE size_t wxWC2MB(char *buf, const wchar_t *psz, size_t n);
  45
  46     #if wxUSE_UNICODE
  47         #define wxMB2WX wxMB2WC
  48         #define wxWX2MB wxWC2MB
  49         #define wxWC2WX wxStrncpy
  50         #define wxWX2WC wxStrncpy
  51     #else
  52         #define wxMB2WX wxStrncpy
  53         #define wxWX2MB wxStrncpy
  54         #define wxWC2WX wxWC2MB
  55         #define wxWX2WC wxMB2WC
  56     #endif
  57 #else /* !wxUSE_UNICODE */
  58     /* No wxUSE_WCHAR_T: we have to do something (JACS) */
  59     #define wxMB2WC wxStrncpy
  60     #define wxWC2MB wxStrncpy
  61     #define wxMB2WX wxStrncpy
  62     #define wxWX2MB wxStrncpy
  63     #define wxWC2WX wxWC2MB
  64     #define wxWX2WC wxMB2WC
  65 #endif
  66
  67
  68 //  RN: We could do the usual tricky compiler detection here,
  69 //  and use their variant (such as wmemchr, etc.).  The problem
  70 //  is that these functions are quite rare, even though they are
  71 //  part of the current POSIX standard.  In addition, most compilers
  72 //  (including even MSC) inline them just like we do right in their
  73 //  headers.
  74 //
  75 #include <string.h>
  76
  77 #if wxUSE_UNICODE
  78     //implement our own wmem variants
  79     inline wxChar* wxTmemchr(const wxChar* s, wxChar c, size_t l)
  80     {
  81         for(;l && *s != c;--l, ++s) {}
  82
  83         if(l)
  84             return (wxChar*)s;
  85         return NULL;
  86     }
  87
  88     inline int wxTmemcmp(const wxChar* sz1, const wxChar* sz2, size_t len)
  89     {
  90         for(; *sz1 == *sz2 && len; --len, ++sz1, ++sz2) {}
  91
  92         if(len)
  93             return *sz1 < *sz2 ? -1 : *sz1 > *sz2;
  94         else
  95             return 0;
  96     }
  97
  98     inline wxChar* wxTmemcpy(wxChar* szOut, const wxChar* szIn, size_t len)
  99     {
 100         return (wxChar*) memcpy(szOut, szIn, len * sizeof(wxChar));
 101     }
 102
 103     inline wxChar* wxTmemmove(wxChar* szOut, const wxChar* szIn, size_t len)
 104     {
 105         return (wxChar*) memmove(szOut, szIn, len * sizeof(wxChar));
 106     }
 107
 108     inline wxChar* wxTmemset(wxChar* szOut, const wxChar cIn, size_t len)
 109     {
 110         wxChar* szRet = szOut;
 111
 112         while (len--)
 113             *szOut++ = cIn;
 114
 115         return szRet;
 116     }
 117 #endif /* wxUSE_UNICODE */
 118
 119 // provide trivial wrappers for char* versions for both ANSI and Unicode builds
 120 // (notice that these intentionally return "char *" and not "void *" unlike the
 121 // standard memxxx() for symmetry with the wide char versions):
 122 inline char* wxTmemchr(const char* s, char c, size_t len)
 123     { return (char*)memchr(s, c, len); }
 124 inline int wxTmemcmp(const char* sz1, const char* sz2, size_t len)
 125     { return memcmp(sz1, sz2, len); }
 126 inline char* wxTmemcpy(char* szOut, const char* szIn, size_t len)
 127     { return (char*)memcpy(szOut, szIn, len); }
 128 inline char* wxTmemmove(char* szOut, const char* szIn, size_t len)
 129     { return (char*)memmove(szOut, szIn, len); }
 130 inline char* wxTmemset(char* szOut, const char cIn, size_t len)
 131     { return (char*)memset(szOut, cIn, len); }
 132
 133
 134 // ============================================================================
 135 //     wx wrappers for CRT functions in both char* and wchar_t* versions
 136 // ============================================================================
 137
 138 // A few notes on implementation of these wrappers:
 139 //
 140 // We need both char* and wchar_t* versions of functions like wxStrlen() for
 141 // compatibility with both ANSI and Unicode builds.
 142 //
 143 // This makes passing wxString or c_str()/mb_str()/wc_str() result to them
 144 // ambiguous, so we need to provide overrides for that as well (in cases where
 145 // it makes sense).
 146 //
 147 // We can do this without problems for some functions (wxStrlen()), but in some
 148 // cases, we can't stay compatible with both ANSI and Unicode builds, e.g. for
 149 // wxStrcpy(const wxString&), which can only return either char* or wchar_t*.
 150 // In these cases, we preserve ANSI build compatibility by returning char*.
 151
 152 // ----------------------------------------------------------------------------
 153 //                              locale functions
 154 // ----------------------------------------------------------------------------
 155
 156 // NB: we can't provide const wchar_t* (= wxChar*) overload, because calling
 157 //     wxSetlocale(category, NULL) -- which is a common thing to do -- would be
 158 //     ambiguous
 159 WXDLLIMPEXP_BASE char* wxSetlocale(int category, const char *locale);
 160 inline char* wxSetlocale(int category, const wxCharBuffer& locale)
 161     { return wxSetlocale(category, locale.data()); }
 162 inline char* wxSetlocale(int category, const wxString& locale)
 163     { return wxSetlocale(category, locale.mb_str()); }
 164 inline char* wxSetlocale(int category, const wxCStrData& locale)
 165     { return wxSetlocale(category, locale.AsCharBuf()); }
 166
 167 // ----------------------------------------------------------------------------
 168 //                              string functions
 169 // ----------------------------------------------------------------------------
 170
 171 /* safe version of strlen() (returns 0 if passed NULL pointer) */
 172 // NB: these are defined in wxcrtbase.h, see the comment there
 173 // inline size_t wxStrlen(const char *s) { return s ? strlen(s) : 0; }
 174 // inline size_t wxStrlen(const wchar_t *s) { return s ? wxCRT_Strlen_(s) : 0; }
 175 inline size_t wxStrlen(const wxCharBuffer& s) { return wxStrlen(s.data()); }
 176 inline size_t wxStrlen(const wxWCharBuffer& s) { return wxStrlen(s.data()); }
 177 inline size_t wxStrlen(const wxString& s) { return s.length(); }
 178 inline size_t wxStrlen(const wxCStrData& s) { return s.AsString().length(); }
 179
 180 // NB: these are defined in wxcrtbase.h, see the comment there
 181 // inline char* wxStrdup(const char *s) { return wxStrdupA(s); }
 182 // inline wchar_t* wxStrdup(const wchar_t *s) { return wxStrdupW(s); }
 183 inline char* wxStrdup(const wxCharBuffer& s) { return wxStrdup(s.data()); }
 184 inline wchar_t* wxStrdup(const wxWCharBuffer& s) { return wxStrdup(s.data()); }
 185 inline char* wxStrdup(const wxString& s) { return wxStrdup(s.mb_str()); }
 186 inline char* wxStrdup(const wxCStrData& s) { return wxStrdup(s.AsCharBuf()); }
 187
 188 inline char *wxStrcpy(char *dest, const char *src)
 189     { return wxCRT_StrcpyA(dest, src); }
 190 inline wchar_t *wxStrcpy(wchar_t *dest, const wchar_t *src)
 191     { return wxCRT_StrcpyW(dest, src); }
 192 inline char *wxStrcpy(char *dest, const wxString& src)
 193     { return wxCRT_StrcpyA(dest, src.mb_str()); }
 194 inline char *wxStrcpy(char *dest, const wxCStrData& src)
 195     { return wxCRT_StrcpyA(dest, src.AsCharBuf()); }
 196 inline char *wxStrcpy(char *dest, const wxCharBuffer& src)
 197     { return wxCRT_StrcpyA(dest, src.data()); }
 198 inline wchar_t *wxStrcpy(wchar_t *dest, const wxString& src)
 199     { return wxCRT_StrcpyW(dest, src.wc_str()); }
 200 inline wchar_t *wxStrcpy(wchar_t *dest, const wxCStrData& src)
 201     { return wxCRT_StrcpyW(dest, src.AsWCharBuf()); }
 202 inline wchar_t *wxStrcpy(wchar_t *dest, const wxWCharBuffer& src)
 203     { return wxCRT_StrcpyW(dest, src.data()); }
 204 inline char *wxStrcpy(char *dest, const wchar_t *src)
 205     { return wxCRT_StrcpyA(dest, wxConvLibc.cWC2MB(src)); }
 206 inline wchar_t *wxStrcpy(wchar_t *dest, const char *src)
 207     { return wxCRT_StrcpyW(dest, wxConvLibc.cMB2WC(src)); }
 208
 209 inline char *wxStrncpy(char *dest, const char *src, size_t n)
 210     { return wxCRT_StrncpyA(dest, src, n); }
 211 inline wchar_t *wxStrncpy(wchar_t *dest, const wchar_t *src, size_t n)
 212     { return wxCRT_StrncpyW(dest, src, n); }
 213 inline char *wxStrncpy(char *dest, const wxString& src, size_t n)
 214     { return wxCRT_StrncpyA(dest, src.mb_str(), n); }
 215 inline char *wxStrncpy(char *dest, const wxCStrData& src, size_t n)
 216     { return wxCRT_StrncpyA(dest, src.AsCharBuf(), n); }
 217 inline char *wxStrncpy(char *dest, const wxCharBuffer& src, size_t n)
 218     { return wxCRT_StrncpyA(dest, src.data(), n); }
 219 inline wchar_t *wxStrncpy(wchar_t *dest, const wxString& src, size_t n)
 220     { return wxCRT_StrncpyW(dest, src.wc_str(), n); }
 221 inline wchar_t *wxStrncpy(wchar_t *dest, const wxCStrData& src, size_t n)
 222     { return wxCRT_StrncpyW(dest, src.AsWCharBuf(), n); }
 223 inline wchar_t *wxStrncpy(wchar_t *dest, const wxWCharBuffer& src, size_t n)
 224     { return wxCRT_StrncpyW(dest, src.data(), n); }
 225 inline char *wxStrncpy(char *dest, const wchar_t *src, size_t n)
 226     { return wxCRT_StrncpyA(dest, wxConvLibc.cWC2MB(src), n); }
 227 inline wchar_t *wxStrncpy(wchar_t *dest, const char *src, size_t n)
 228     { return wxCRT_StrncpyW(dest, wxConvLibc.cMB2WC(src), n); }
 229
 230 inline char *wxStrcat(char *dest, const char *src)
 231     { return wxCRT_StrcatA(dest, src); }
 232 inline wchar_t *wxStrcat(wchar_t *dest, const wchar_t *src)
 233     { return wxCRT_StrcatW(dest, src); }
 234 inline char *wxStrcat(char *dest, const wxString& src)
 235     { return wxCRT_StrcatA(dest, src.mb_str()); }
 236 inline char *wxStrcat(char *dest, const wxCStrData& src)
 237     { return wxCRT_StrcatA(dest, src.AsCharBuf()); }
 238 inline char *wxStrcat(char *dest, const wxCharBuffer& src)
 239     { return wxCRT_StrcatA(dest, src.data()); }
 240 inline wchar_t *wxStrcat(wchar_t *dest, const wxString& src)
 241     { return wxCRT_StrcatW(dest, src.wc_str()); }
 242 inline wchar_t *wxStrcat(wchar_t *dest, const wxCStrData& src)
 243     { return wxCRT_StrcatW(dest, src.AsWCharBuf()); }
 244 inline wchar_t *wxStrcat(wchar_t *dest, const wxWCharBuffer& src)
 245     { return wxCRT_StrcatW(dest, src.data()); }
 246 inline char *wxStrcat(char *dest, const wchar_t *src)
 247     { return wxCRT_StrcatA(dest, wxConvLibc.cWC2MB(src)); }
 248 inline wchar_t *wxStrcat(wchar_t *dest, const char *src)
 249     { return wxCRT_StrcatW(dest, wxConvLibc.cMB2WC(src)); }
 250
 251 inline char *wxStrncat(char *dest, const char *src, size_t n)
 252     { return wxCRT_StrncatA(dest, src, n); }
 253 inline wchar_t *wxStrncat(wchar_t *dest, const wchar_t *src, size_t n)
 254     { return wxCRT_StrncatW(dest, src, n); }
 255 inline char *wxStrncat(char *dest, const wxString& src, size_t n)
 256     { return wxCRT_StrncatA(dest, src.mb_str(), n); }
 257 inline char *wxStrncat(char *dest, const wxCStrData& src, size_t n)
 258     { return wxCRT_StrncatA(dest, src.AsCharBuf(), n); }
 259 inline char *wxStrncat(char *dest, const wxCharBuffer& src, size_t n)
 260     { return wxCRT_StrncatA(dest, src.data(), n); }
 261 inline wchar_t *wxStrncat(wchar_t *dest, const wxString& src, size_t n)
 262     { return wxCRT_StrncatW(dest, src.wc_str(), n); }
 263 inline wchar_t *wxStrncat(wchar_t *dest, const wxCStrData& src, size_t n)
 264     { return wxCRT_StrncatW(dest, src.AsWCharBuf(), n); }
 265 inline wchar_t *wxStrncat(wchar_t *dest, const wxWCharBuffer& src, size_t n)
 266     { return wxCRT_StrncatW(dest, src.data(), n); }
 267 inline char *wxStrncat(char *dest, const wchar_t *src, size_t n)
 268     { return wxCRT_StrncatA(dest, wxConvLibc.cWC2MB(src), n); }
 269 inline wchar_t *wxStrncat(wchar_t *dest, const char *src, size_t n)
 270     { return wxCRT_StrncatW(dest, wxConvLibc.cMB2WC(src), n); }
 271
 272
 273 #define WX_STR_DECL(name, T1, T2)  name(T1 s1, T2 s2)
 274 #define WX_STR_CALL(func, a1, a2)  func(a1, a2)
 275
 276 // This macro defines string function for all possible variants of arguments,
 277 // except for those taking wxString or wxCStrData as second argument.
 278 // Parameters:
 279 //   rettype   - return type
 280 //   name      - name of the (overloaded) function to define
 281 //   crtA      - function to call for char* versions (takes two arguments)
 282 //   crtW      - ditto for wchar_t* function
 283 //   forString - function to call when the *first* argument is wxString;
 284 //               the second argument can be any string type, so this is
 285 //               typically a template
 286 #define WX_STR_FUNC_NO_INVERT(rettype, name, crtA, crtW, forString)           \
 287     inline rettype WX_STR_DECL(name, const char *, const char *)              \
 288         { return WX_STR_CALL(crtA, s1, s2); }                                 \
 289     inline rettype WX_STR_DECL(name, const char *, const wchar_t *)           \
 290         { return WX_STR_CALL(forString, wxString(s1), wxString(s2)); }        \
 291     inline rettype WX_STR_DECL(name, const char *, const wxCharBuffer&)       \
 292         { return WX_STR_CALL(crtA, s1, s2.data()); }                          \
 293     inline rettype WX_STR_DECL(name, const char *, const wxWCharBuffer&)      \
 294         { return WX_STR_CALL(forString, wxString(s1), s2.data()); }           \
 295                                                                               \
 296     inline rettype WX_STR_DECL(name, const wchar_t *, const wchar_t *)        \
 297         { return WX_STR_CALL(crtW, s1, s2); }                                 \
 298     inline rettype WX_STR_DECL(name, const wchar_t *, const char *)           \
 299         { return WX_STR_CALL(forString, wxString(s1), wxString(s2)); }        \
 300     inline rettype WX_STR_DECL(name, const wchar_t *, const wxWCharBuffer&)   \
 301         { return WX_STR_CALL(crtW, s1, s2.data()); }                          \
 302     inline rettype WX_STR_DECL(name, const wchar_t *, const wxCharBuffer&)    \
 303         { return WX_STR_CALL(forString, wxString(s1), s2.data()); }           \
 304                                                                               \
 305     inline rettype WX_STR_DECL(name, const wxCharBuffer&, const char *)       \
 306         { return WX_STR_CALL(crtA, s1.data(), s2); }                          \
 307     inline rettype WX_STR_DECL(name, const wxCharBuffer&, const wchar_t *)    \
 308         { return WX_STR_CALL(forString, wxString(s1), wxString(s2)); }        \
 309     inline rettype WX_STR_DECL(name, const wxCharBuffer&, const wxCharBuffer&)\
 310         { return WX_STR_CALL(crtA, s1.data(), s2.data()); }                   \
 311     inline int WX_STR_DECL(name, const wxCharBuffer&, const wxWCharBuffer&)   \
 312         { return WX_STR_CALL(forString, wxString(s1), wxString(s2)); }        \
 313                                                                               \
 314     inline rettype WX_STR_DECL(name, const wxWCharBuffer&, const wchar_t *)   \
 315         { return WX_STR_CALL(crtW, s1.data(), s2); }                          \
 316     inline rettype WX_STR_DECL(name, const wxWCharBuffer&, const char *)      \
 317         { return WX_STR_CALL(forString, wxString(s1), wxString(s2)); }        \
 318     inline int WX_STR_DECL(name, const wxWCharBuffer&, const wxWCharBuffer&)  \
 319         { return WX_STR_CALL(crtW, s1.data(), s2.data()); }                   \
 320     inline int WX_STR_DECL(name, const wxWCharBuffer&, const wxCharBuffer&)   \
 321         { return WX_STR_CALL(forString, wxString(s1), wxString(s2)); }        \
 322                                                                               \
 323     inline rettype WX_STR_DECL(name, const wxString&, const char*)            \
 324         { return WX_STR_CALL(forString, s1, s2); }                            \
 325     inline rettype WX_STR_DECL(name, const wxString&, const wchar_t*)         \
 326         { return WX_STR_CALL(forString, s1, s2); }                            \
 327     inline rettype WX_STR_DECL(name, const wxString&, const wxCharBuffer&)    \
 328         { return WX_STR_CALL(forString, s1, s2); }                            \
 329     inline rettype WX_STR_DECL(name, const wxString&, const wxWCharBuffer&)   \
 330         { return WX_STR_CALL(forString, s1, s2); }                            \
 331     inline rettype WX_STR_DECL(name, const wxString&, const wxString&)        \
 332         { return WX_STR_CALL(forString, s1, s2); }                            \
 333     inline rettype WX_STR_DECL(name, const wxString&, const wxCStrData&)      \
 334         { return WX_STR_CALL(forString, s1, s2); }                            \
 335                                                                               \
 336     inline rettype WX_STR_DECL(name, const wxCStrData&, const char*)          \
 337         { return WX_STR_CALL(forString, s1.AsString(), s2); }                 \
 338     inline rettype WX_STR_DECL(name, const wxCStrData&, const wchar_t*)       \
 339         { return WX_STR_CALL(forString, s1.AsString(), s2); }                 \
 340     inline rettype WX_STR_DECL(name, const wxCStrData&, const wxCharBuffer&)  \
 341         { return WX_STR_CALL(forString, s1.AsString(), s2); }                 \
 342     inline rettype WX_STR_DECL(name, const wxCStrData&, const wxWCharBuffer&) \
 343         { return WX_STR_CALL(forString, s1.AsString(), s2); }                 \
 344     inline rettype WX_STR_DECL(name, const wxCStrData&, const wxString&)      \
 345         { return WX_STR_CALL(forString, s1.AsString(), s2); }                 \
 346     inline rettype WX_STR_DECL(name, const wxCStrData&, const wxCStrData&)    \
 347         { return WX_STR_CALL(forString, s1.AsString(), s2); }
 348
 349 // This defines strcmp-like function, i.e. one returning the result of
 350 // comparison; see WX_STR_FUNC_NO_INVERT for explanation of the arguments
 351 #define WX_STRCMP_FUNC(name, crtA, crtW, forString)                           \
 352     WX_STR_FUNC_NO_INVERT(int, name, crtA, crtW, forString)                   \
 353                                                                               \
 354     inline int WX_STR_DECL(name, const char *, const wxCStrData&)             \
 355         { return -WX_STR_CALL(forString, s2.AsString(), s1); }                \
 356     inline int WX_STR_DECL(name, const char *, const wxString&)               \
 357         { return -WX_STR_CALL(forString, s2, s1); }                           \
 358                                                                               \
 359     inline int WX_STR_DECL(name, const wchar_t *, const wxCStrData&)          \
 360         { return -WX_STR_CALL(forString, s2.AsString(), s1); }                \
 361     inline int WX_STR_DECL(name, const wchar_t *, const wxString&)            \
 362         { return -WX_STR_CALL(forString, s2, s1); }                           \
 363                                                                               \
 364     inline int WX_STR_DECL(name, const wxCharBuffer&, const wxCStrData&)      \
 365         { return -WX_STR_CALL(forString, s2.AsString(), s1.data()); }         \
 366     inline int WX_STR_DECL(name, const wxCharBuffer&, const wxString&)        \
 367         { return -WX_STR_CALL(forString, s2, s1.data()); }                    \
 368                                                                               \
 369     inline int WX_STR_DECL(name, const wxWCharBuffer&, const wxCStrData&)     \
 370         { return -WX_STR_CALL(forString, s2.AsString(), s1.data()); }         \
 371     inline int WX_STR_DECL(name, const wxWCharBuffer&, const wxString&)       \
 372         { return -WX_STR_CALL(forString, s2, s1.data()); }
 373
 374
 375 // This defines a string function that is *not* strcmp-like, i.e. doesn't
 376 // return the result of comparison and so if the second argument is a string,
 377 // it has to be converted to char* or wchar_t*
 378 #define WX_STR_FUNC(rettype, name, crtA, crtW, forString)                     \
 379     WX_STR_FUNC_NO_INVERT(rettype, name, crtA, crtW, forString)               \
 380                                                                               \
 381     inline rettype WX_STR_DECL(name, const char *, const wxCStrData&)         \
 382         { return WX_STR_CALL(crtA, s1, s2.AsCharBuf()); }                     \
 383     inline rettype WX_STR_DECL(name, const char *, const wxString&)           \
 384         { return WX_STR_CALL(crtA, s1, s2.mb_str()); }                        \
 385                                                                               \
 386     inline rettype WX_STR_DECL(name, const wchar_t *, const wxCStrData&)      \
 387         { return WX_STR_CALL(crtW, s1, s2.AsWCharBuf()); }                    \
 388     inline rettype WX_STR_DECL(name, const wchar_t *, const wxString&)        \
 389         { return WX_STR_CALL(crtW, s1, s2.wc_str()); }                        \
 390                                                                               \
 391     inline rettype WX_STR_DECL(name, const wxCharBuffer&, const wxCStrData&)  \
 392         { return WX_STR_CALL(crtA, s1.data(), s2.AsCharBuf()); }              \
 393     inline rettype WX_STR_DECL(name, const wxCharBuffer&, const wxString&)    \
 394         { return WX_STR_CALL(crtA, s1.data(), s2.mb_str()); }                 \
 395                                                                               \
 396     inline rettype WX_STR_DECL(name, const wxWCharBuffer&, const wxCStrData&) \
 397         { return WX_STR_CALL(crtW, s1.data(), s2.AsWCharBuf()); }             \
 398     inline rettype WX_STR_DECL(name, const wxWCharBuffer&, const wxString&)   \
 399         { return WX_STR_CALL(crtW, s1.data(), s2.wc_str()); }
 400
 401 template<typename T>
 402 inline int wxStrcmp_String(const wxString& s1, const T& s2)
 403     { return s1.compare(s2); }
 404 WX_STRCMP_FUNC(wxStrcmp, wxCRT_StrcmpA, wxCRT_StrcmpW, wxStrcmp_String)
 405
 406 template<typename T>
 407 inline int wxStricmp_String(const wxString& s1, const T& s2)
 408     { return s1.CmpNoCase(s2); }
 409 WX_STRCMP_FUNC(wxStricmp, wxCRT_StricmpA, wxCRT_StricmpW, wxStricmp_String)
 410
 411 #if defined(wxCRT_StrcollA) && defined(wxCRT_StrcollW)
 412
 413 // GCC 3.3 and other compilers have a bug that causes it to fail compilation if
 414 // the template's implementation uses overloaded function declared later (see
 415 // the wxStrcoll() call in wxStrcoll_String<T>()), so we have to
 416 // forward-declare the template and implement it below WX_STRCMP_FUNC. OTOH,
 417 // this fails to compile with VC6, so don't do it for VC. It also causes
 418 // problems with GCC visibility in newer GCC versions.
 419 #if !(defined(__VISUALC__) || wxCHECK_GCC_VERSION(3,4))
 420 template<typename T>
 421 inline int wxStrcoll_String(const wxString& s1, const T& s2);
 422 WX_STRCMP_FUNC(wxStrcoll, wxCRT_StrcollA, wxCRT_StrcollW, wxStrcoll_String)
 423 #endif // !__VISUALC__
 424
 425 template<typename T>
 426 inline int wxStrcoll_String(const wxString& s1, const T& s2)
 427 {
 428 #if wxUSE_UNICODE
 429     // NB: strcoll() doesn't work correctly on UTF-8 strings, so we have to use
 430     //     wc_str() even if wxUSE_UNICODE_UTF8; the (const wchar_t*) cast is
 431     //     there just as optimization to avoid going through
 432     //     wxStrcoll<wxWCharBuffer>:
 433     return wxStrcoll((const wchar_t*)s1.wc_str(), s2);
 434 #else
 435     return wxStrcoll((const char*)s1.mb_str(), s2);
 436 #endif
 437 }
 438
 439 #if defined(__VISUALC__) || wxCHECK_GCC_VERSION(3,4)
 440 // this is exactly the same WX_STRCMP_FUNC line as above wxStrcoll_String<>
 441 WX_STRCMP_FUNC(wxStrcoll, wxCRT_StrcollA, wxCRT_StrcollW, wxStrcoll_String)
 442 #endif
 443
 444 #endif // defined(wxCRT_Strcoll[AW])
 445
 446 template<typename T>
 447 inline int wxStrspn_String(const wxString& s1, const T& s2)
 448 {
 449     size_t pos = s1.find_first_not_of(s2);
 450     return (pos == wxString::npos) ? s1.length() : pos;
 451 }
 452 WX_STR_FUNC(size_t, wxStrspn, wxCRT_StrspnA, wxCRT_StrspnW, wxStrspn_String)
 453
 454 template<typename T>
 455 inline int wxStrcspn_String(const wxString& s1, const T& s2)
 456 {
 457     size_t pos = s1.find_first_of(s2);
 458     return (pos == wxString::npos) ? s1.length() : pos;
 459 }
 460 WX_STR_FUNC(size_t, wxStrcspn, wxCRT_StrcspnA, wxCRT_StrcspnW, wxStrcspn_String)
 461
 462 #undef WX_STR_DECL
 463 #undef WX_STR_CALL
 464 #define WX_STR_DECL(name, T1, T2)  name(T1 s1, T2 s2, size_t n)
 465 #define WX_STR_CALL(func, a1, a2)  func(a1, a2, n)
 466
 467 template<typename T>
 468 inline int wxStrncmp_String(const wxString& s1, const T& s2, size_t n)
 469     { return s1.compare(0, n, s2, 0, n); }
 470 WX_STRCMP_FUNC(wxStrncmp, wxCRT_StrncmpA, wxCRT_StrncmpW, wxStrncmp_String)
 471
 472 template<typename T>
 473 inline int wxStrnicmp_String(const wxString& s1, const T& s2, size_t n)
 474     { return s1.substr(0, n).CmpNoCase(wxString(s2).substr(0, n)); }
 475 WX_STRCMP_FUNC(wxStrnicmp, wxCRT_StrnicmpA, wxCRT_StrnicmpW, wxStrnicmp_String)
 476
 477 #undef WX_STR_DECL
 478 #undef WX_STR_CALL
 479 #undef WX_STRCMP_FUNC
 480 #undef WX_STR_FUNC
 481 #undef WX_STR_FUNC_NO_INVERT
 482
 483 #if defined(wxCRT_StrxfrmA) && defined(wxCRT_StrxfrmW)
 484
 485 inline size_t wxStrxfrm(char *dest, const char *src, size_t n)
 486     { return wxCRT_StrxfrmA(dest, src, n); }
 487 inline size_t wxStrxfrm(wchar_t *dest, const wchar_t *src, size_t n)
 488     { return wxCRT_StrxfrmW(dest, src, n); }
 489 template<typename T>
 490 inline size_t wxStrxfrm(T *dest, const wxCharTypeBuffer<T>& src, size_t n)
 491     { return wxStrxfrm(dest, src.data(), n); }
 492 inline size_t wxStrxfrm(char *dest, const wxString& src, size_t n)
 493     { return wxCRT_StrxfrmA(dest, src.mb_str(), n); }
 494 inline size_t wxStrxfrm(wchar_t *dest, const wxString& src, size_t n)
 495     { return wxCRT_StrxfrmW(dest, src.wc_str(), n); }
 496 inline size_t wxStrxfrm(char *dest, const wxCStrData& src, size_t n)
 497     { return wxCRT_StrxfrmA(dest, src.AsCharBuf(), n); }
 498 inline size_t wxStrxfrm(wchar_t *dest, const wxCStrData& src, size_t n)
 499     { return wxCRT_StrxfrmW(dest, src.AsWCharBuf(), n); }
 500
 501 #endif // defined(wxCRT_Strxfrm[AW])
 502
 503 inline char *wxStrtok(char *str, const char *delim, char **saveptr)
 504     { return wxCRT_StrtokA(str, delim, saveptr); }
 505 inline wchar_t *wxStrtok(wchar_t *str, const wchar_t *delim, wchar_t **saveptr)
 506     { return wxCRT_StrtokW(str, delim, saveptr); }
 507 template<typename T>
 508 inline T *wxStrtok(T *str, const wxCharTypeBuffer<T>& delim, T **saveptr)
 509     { return wxStrtok(str, delim.data(), saveptr); }
 510 inline char *wxStrtok(char *str, const wxCStrData& delim, char **saveptr)
 511     { return wxCRT_StrtokA(str, delim.AsCharBuf(), saveptr); }
 512 inline wchar_t *wxStrtok(wchar_t *str, const wxCStrData& delim, wchar_t **saveptr)
 513     { return wxCRT_StrtokW(str, delim.AsWCharBuf(), saveptr); }
 514 inline char *wxStrtok(char *str, const wxString& delim, char **saveptr)
 515     { return wxCRT_StrtokA(str, delim.mb_str(), saveptr); }
 516 inline wchar_t *wxStrtok(wchar_t *str, const wxString& delim, wchar_t **saveptr)
 517     { return wxCRT_StrtokW(str, delim.wc_str(), saveptr); }
 518
 519 inline const char *wxStrstr(const char *haystack, const char *needle)
 520     { return wxCRT_StrstrA(haystack, needle); }
 521 inline const wchar_t *wxStrstr(const wchar_t *haystack, const wchar_t *needle)
 522     { return wxCRT_StrstrW(haystack, needle); }
 523 inline const char *wxStrstr(const char *haystack, const wxString& needle)
 524     { return wxCRT_StrstrA(haystack, needle.mb_str()); }
 525 inline const wchar_t *wxStrstr(const wchar_t *haystack, const wxString& needle)
 526     { return wxCRT_StrstrW(haystack, needle.wc_str()); }
 527 // these functions return char* pointer into the non-temporary conversion buffer
 528 // used by c_str()'s implicit conversion to char*, for ANSI build compatibility
 529 inline const char *wxStrstr(const wxString& haystack, const wxString& needle)
 530     { return wxCRT_StrstrA(haystack.c_str(), needle.mb_str()); }
 531 inline const char *wxStrstr(const wxCStrData& haystack, const wxString& needle)
 532     { return wxCRT_StrstrA(haystack, needle.mb_str()); }
 533 inline const char *wxStrstr(const wxCStrData& haystack, const wxCStrData& needle)
 534     { return wxCRT_StrstrA(haystack, needle.AsCharBuf()); }
 535 // if 'needle' is char/wchar_t, then the same is probably wanted as return value
 536 inline const char *wxStrstr(const wxString& haystack, const char *needle)
 537     { return wxCRT_StrstrA(haystack.c_str(), needle); }
 538 inline const char *wxStrstr(const wxCStrData& haystack, const char *needle)
 539     { return wxCRT_StrstrA(haystack, needle); }
 540 inline const wchar_t *wxStrstr(const wxString& haystack, const wchar_t *needle)
 541     { return wxCRT_StrstrW(haystack.c_str(), needle); }
 542 inline const wchar_t *wxStrstr(const wxCStrData& haystack, const wchar_t *needle)
 543     { return wxCRT_StrstrW(haystack, needle); }
 544
 545 inline const char *wxStrchr(const char *s, char c)
 546     { return wxCRT_StrchrA(s, c); }
 547 inline const wchar_t *wxStrchr(const wchar_t *s, wchar_t c)
 548     { return wxCRT_StrchrW(s, c); }
 549 inline const char *wxStrrchr(const char *s, char c)
 550     { return wxCRT_StrrchrA(s, c); }
 551 inline const wchar_t *wxStrrchr(const wchar_t *s, wchar_t c)
 552     { return wxCRT_StrrchrW(s, c); }
 553 inline const char *wxStrchr(const char *s, const wxUniChar& c)
 554     { return wxCRT_StrchrA(s, (char)c); }
 555 inline const wchar_t *wxStrchr(const wchar_t *s, const wxUniChar& c)
 556     { return wxCRT_StrchrW(s, (wchar_t)c); }
 557 inline const char *wxStrrchr(const char *s, const wxUniChar& c)
 558     { return wxCRT_StrrchrA(s, (char)c); }
 559 inline const wchar_t *wxStrrchr(const wchar_t *s, const wxUniChar& c)
 560     { return wxCRT_StrrchrW(s, (wchar_t)c); }
 561 inline const char *wxStrchr(const char *s, const wxUniCharRef& c)
 562     { return wxCRT_StrchrA(s, (char)c); }
 563 inline const wchar_t *wxStrchr(const wchar_t *s, const wxUniCharRef& c)
 564     { return wxCRT_StrchrW(s, (wchar_t)c); }
 565 inline const char *wxStrrchr(const char *s, const wxUniCharRef& c)
 566     { return wxCRT_StrrchrA(s, (char)c); }
 567 inline const wchar_t *wxStrrchr(const wchar_t *s, const wxUniCharRef& c)
 568     { return wxCRT_StrrchrW(s, (wchar_t)c); }
 569 template<typename T>
 570 inline const T* wxStrchr(const wxCharTypeBuffer<T>& s, T c)
 571     { return wxStrchr(s.data(), c); }
 572 template<typename T>
 573 inline const T* wxStrrchr(const wxCharTypeBuffer<T>& s, T c)
 574     { return wxStrrchr(s.data(), c); }
 575 template<typename T>
 576 inline const T* wxStrchr(const wxCharTypeBuffer<T>& s, const wxUniChar& c)
 577     { return wxStrchr(s.data(), (T)c); }
 578 template<typename T>
 579 inline const T* wxStrrchr(const wxCharTypeBuffer<T>& s, const wxUniChar& c)
 580     { return wxStrrchr(s.data(), (T)c); }
 581 template<typename T>
 582 inline const T* wxStrchr(const wxCharTypeBuffer<T>& s, const wxUniCharRef& c)
 583     { return wxStrchr(s.data(), (T)c); }
 584 template<typename T>
 585 inline const T* wxStrrchr(const wxCharTypeBuffer<T>& s, const wxUniCharRef& c)
 586     { return wxStrrchr(s.data(), (T)c); }
 587 // these functions return char* pointer into the non-temporary conversion buffer
 588 // used by c_str()'s implicit conversion to char*, for ANSI build compatibility
 589 inline const char* wxStrchr(const wxString& s, char c)
 590     { return wxCRT_StrchrA((const char*)s.c_str(), c); }
 591 inline const char* wxStrrchr(const wxString& s, char c)
 592     { return wxCRT_StrrchrA((const char*)s.c_str(), c); }
 593 inline const char* wxStrchr(const wxString& s, int c)
 594     { return wxCRT_StrchrA((const char*)s.c_str(), c); }
 595 inline const char* wxStrrchr(const wxString& s, int c)
 596     { return wxCRT_StrrchrA((const char*)s.c_str(), c); }
 597 inline const char* wxStrchr(const wxString& s, const wxUniChar& c)
 598     { return wxCRT_StrchrA((const char*)s.c_str(), (char)c); }
 599 inline const char* wxStrrchr(const wxString& s, const wxUniChar& c)
 600     { return wxCRT_StrrchrA((const char*)s.c_str(), (char)c); }
 601 inline const char* wxStrchr(const wxString& s, const wxUniCharRef& c)
 602     { return wxCRT_StrchrA((const char*)s.c_str(), (char)c); }
 603 inline const char* wxStrrchr(const wxString& s, const wxUniCharRef& c)
 604     { return wxCRT_StrrchrA((const char*)s.c_str(), (char)c); }
 605 inline const wchar_t* wxStrchr(const wxString& s, wchar_t c)
 606     { return wxCRT_StrchrW((const wchar_t*)s.c_str(), c); }
 607 inline const wchar_t* wxStrrchr(const wxString& s, wchar_t c)
 608     { return wxCRT_StrrchrW((const wchar_t*)s.c_str(), c); }
 609 inline const char* wxStrchr(const wxCStrData& s, char c)
 610     { return wxCRT_StrchrA(s.AsChar(), c); }
 611 inline const char* wxStrrchr(const wxCStrData& s, char c)
 612     { return wxCRT_StrrchrA(s.AsChar(), c); }
 613 inline const char* wxStrchr(const wxCStrData& s, int c)
 614     { return wxCRT_StrchrA(s.AsChar(), c); }
 615 inline const char* wxStrrchr(const wxCStrData& s, int c)
 616     { return wxCRT_StrrchrA(s.AsChar(), c); }
 617 inline const char* wxStrchr(const wxCStrData& s, const wxUniChar& c)
 618     { return wxCRT_StrchrA(s.AsChar(), (char)c); }
 619 inline const char* wxStrrchr(const wxCStrData& s, const wxUniChar& c)
 620     { return wxCRT_StrrchrA(s.AsChar(), (char)c); }
 621 inline const char* wxStrchr(const wxCStrData& s, const wxUniCharRef& c)
 622     { return wxCRT_StrchrA(s.AsChar(), (char)c); }
 623 inline const char* wxStrrchr(const wxCStrData& s, const wxUniCharRef& c)
 624     { return wxCRT_StrrchrA(s.AsChar(), (char)c); }
 625 inline const wchar_t* wxStrchr(const wxCStrData& s, wchar_t c)
 626     { return wxCRT_StrchrW(s.AsWChar(), c); }
 627 inline const wchar_t* wxStrrchr(const wxCStrData& s, wchar_t c)
 628     { return wxCRT_StrrchrW(s.AsWChar(), c); }
 629
 630 inline const char *wxStrpbrk(const char *s, const char *accept)
 631     { return wxCRT_StrpbrkA(s, accept); }
 632 inline const wchar_t *wxStrpbrk(const wchar_t *s, const wchar_t *accept)
 633     { return wxCRT_StrpbrkW(s, accept); }
 634 inline const char *wxStrpbrk(const char *s, const wxString& accept)
 635     { return wxCRT_StrpbrkA(s, accept.mb_str()); }
 636 inline const char *wxStrpbrk(const char *s, const wxCStrData& accept)
 637     { return wxCRT_StrpbrkA(s, accept.AsCharBuf()); }
 638 inline const wchar_t *wxStrpbrk(const wchar_t *s, const wxString& accept)
 639     { return wxCRT_StrpbrkW(s, accept.wc_str()); }
 640 inline const wchar_t *wxStrpbrk(const wchar_t *s, const wxCStrData& accept)
 641     { return wxCRT_StrpbrkW(s, accept.AsWCharBuf()); }
 642 inline const char *wxStrpbrk(const wxString& s, const wxString& accept)
 643     { return wxCRT_StrpbrkA(s.c_str(), accept.mb_str()); }
 644 inline const char *wxStrpbrk(const wxString& s, const char *accept)
 645     { return wxCRT_StrpbrkA(s.c_str(), accept); }
 646 inline const wchar_t *wxStrpbrk(const wxString& s, const wchar_t *accept)
 647     { return wxCRT_StrpbrkW(s.wc_str(), accept); }
 648 inline const char *wxStrpbrk(const wxString& s, const wxCStrData& accept)
 649     { return wxCRT_StrpbrkA(s.c_str(), accept.AsCharBuf()); }
 650 inline const char *wxStrpbrk(const wxCStrData& s, const wxString& accept)
 651     { return wxCRT_StrpbrkA(s.AsChar(), accept.mb_str()); }
 652 inline const char *wxStrpbrk(const wxCStrData& s, const char *accept)
 653     { return wxCRT_StrpbrkA(s.AsChar(), accept); }
 654 inline const wchar_t *wxStrpbrk(const wxCStrData& s, const wchar_t *accept)
 655     { return wxCRT_StrpbrkW(s.AsWChar(), accept); }
 656 inline const char *wxStrpbrk(const wxCStrData& s, const wxCStrData& accept)
 657     { return wxCRT_StrpbrkA(s.AsChar(), accept.AsCharBuf()); }
 658 template <typename S, typename T>
 659 inline const T *wxStrpbrk(const S& s, const wxCharTypeBuffer<T>& accept)
 660     { return wxStrpbrk(s, accept.data()); }
 661
 662
 663 /* inlined non-const versions */
 664 inline char *wxStrstr(char *haystack, const char *needle)
 665     { return (char *)wxStrstr((const char *)haystack, needle); }
 666 inline wchar_t *wxStrstr(wchar_t *haystack, const wchar_t *needle)
 667     { return (wchar_t *)wxStrstr((const wchar_t *)haystack, needle); }
 668 inline char *wxStrstr(char *haystack, const wxString& needle)
 669     { return (char *)wxStrstr((const char *)haystack, needle); }
 670 inline wchar_t *wxStrstr(wchar_t *haystack, const wxString& needle)
 671     { return (wchar_t *)wxStrstr((const wchar_t *)haystack, needle); }
 672
 673 inline char * wxStrchr(char *s, char c)
 674     { return (char *)wxStrchr((const char *)s, c); }
 675 inline char * wxStrrchr(char *s, char c)
 676     { return (char *)wxStrrchr((const char *)s, c); }
 677 inline wchar_t * wxStrchr(wchar_t *s, wchar_t c)
 678     { return (wchar_t *)wxStrchr((const wchar_t *)s, c); }
 679 inline wchar_t * wxStrrchr(wchar_t *s, wchar_t c)
 680     { return (wchar_t *)wxStrrchr((const wchar_t *)s, c); }
 681
 682 inline char * wxStrpbrk(char *s, const char *accept)
 683     { return (char *)wxStrpbrk((const char *)s, accept); }
 684 inline wchar_t * wxStrpbrk(wchar_t *s, const wchar_t *accept)
 685     { return (wchar_t *)wxStrpbrk((const wchar_t *)s, accept); }
 686 inline char * wxStrpbrk(char *s, const wxString& accept)
 687     { return (char *)wxStrpbrk((const char *)s, accept); }
 688 inline wchar_t * wxStrpbrk(wchar_t *s, const wxString& accept)
 689     { return (wchar_t *)wxStrpbrk((const wchar_t *)s, accept); }
 690
 691
 692 // ----------------------------------------------------------------------------
 693 //                              stdio.h functions
 694 // ----------------------------------------------------------------------------
 695
 696 // NB: using fn_str() for mode is a hack to get the same type (char*/wchar_t*)
 697 //     as needed, the conversion itself doesn't matter, it's ASCII
 698 inline FILE *wxFopen(const wxString& path, const wxString& mode)
 699     { return wxCRT_Fopen(path.fn_str(), mode.fn_str()); }
 700 inline FILE *wxFreopen(const wxString& path, const wxString& mode, FILE *stream)
 701     { return wxCRT_Freopen(path.fn_str(), mode.fn_str(), stream); }
 702 inline int wxRemove(const wxString& path)
 703     { return wxCRT_Remove(path.fn_str()); }
 704 inline int wxRename(const wxString& oldpath, const wxString& newpath)
 705     { return wxCRT_Rename(oldpath.fn_str(), newpath.fn_str()); }
 706
 707 extern WXDLLIMPEXP_BASE int wxPuts(const wxString& s);
 708 extern WXDLLIMPEXP_BASE int wxFputs(const wxString& s, FILE *stream);
 709 extern WXDLLIMPEXP_BASE void wxPerror(const wxString& s);
 710
 711 extern WXDLLIMPEXP_BASE int wxFputc(const wxUniChar& c, FILE *stream);
 712
 713 #define wxPutc(c, stream)  wxFputc(c, stream)
 714 #define wxPutchar(c)       wxFputc(c, stdout)
 715 #define wxFputchar(c)      wxPutchar(c)
 716
 717 // NB: We only provide ANSI version of fgets() because fgetws() interprets the
 718 //     stream according to current locale, which is rarely what is desired.
 719 inline char *wxFgets(char *s, int size, FILE *stream)
 720     { return wxCRT_FgetsA(s, size, stream); }
 721 // This version calls ANSI version and converts the string using wxConvLibc
 722 extern WXDLLIMPEXP_BASE wchar_t *wxFgets(wchar_t *s, int size, FILE *stream);
 723
 724 #define wxGets(s) wxGets_is_insecure_and_dangerous_use_wxFgets_instead
 725
 726 // NB: We only provide ANSI versions of this for the same reasons as in the
 727 //     case of wxFgets() above
 728 inline int wxFgetc(FILE *stream) { return wxCRT_FgetcA(stream); }
 729 inline int wxUngetc(int c, FILE *stream) { return wxCRT_UngetcA(c, stream); }
 730
 731 #define wxGetc(stream)     wxFgetc(stream)
 732 #define wxGetchar()        wxFgetc(stdin)
 733 #define wxFgetchar()       wxGetchar()
 734
 735 // ----------------------------------------------------------------------------
 736 //                             stdlib.h functions
 737 // ----------------------------------------------------------------------------
 738
 739 #ifdef wxCRT_AtoiW
 740 inline int wxAtoi(const wxString& str) { return wxCRT_AtoiW(str.wc_str()); }
 741 #else
 742 inline int wxAtoi(const wxString& str) { return wxCRT_AtoiA(str.mb_str()); }
 743 #endif
 744
 745 #ifdef wxCRT_AtolW
 746 inline long wxAtol(const wxString& str) { return wxCRT_AtolW(str.wc_str()); }
 747 #else
 748 inline long wxAtol(const wxString& str) { return wxCRT_AtolA(str.mb_str()); }
 749 #endif
 750
 751 #ifdef wxCRT_AtofW
 752 inline double wxAtof(const wxString& str) { return wxCRT_AtofW(str.wc_str()); }
 753 #else
 754 inline double wxAtof(const wxString& str) { return wxCRT_AtofA(str.mb_str()); }
 755 #endif
 756
 757 inline double wxStrtod(const char *nptr, char **endptr)
 758     { return wxCRT_StrtodA(nptr, endptr); }
 759 inline double wxStrtod(const wchar_t *nptr, wchar_t **endptr)
 760     { return wxCRT_StrtodW(nptr, endptr); }
 761 template<typename T>
 762 inline double wxStrtod(const wxCharTypeBuffer<T>& nptr, T **endptr)
 763     { return wxStrtod(nptr.data(), endptr); }
 764
 765 // We implement wxStrto*() like this so that the code compiles when NULL is
 766 // passed in - - if we had just char** and wchar_t** overloads for 'endptr', it
 767 // would be ambiguous. The solution is to use a template so that endptr can be
 768 // any type: when NULL constant is used, the type will be int and we can handle
 769 // that case specially. Otherwise, we infer the type that 'nptr' should be
 770 // converted to from the type of 'endptr'. We need wxStrtoxCharType<T> template
 771 // to make the code compile even for T=int (that's the case when it's not going
 772 // to be ever used, but it still has to compile).
 773 template<typename T> struct wxStrtoxCharType {};
 774 template<> struct wxStrtoxCharType<char**>
 775 {
 776     typedef const char* Type;
 777     static char** AsPointer(char **p) { return p; }
 778 };
 779 template<> struct wxStrtoxCharType<wchar_t**>
 780 {
 781     typedef const wchar_t* Type;
 782     static wchar_t** AsPointer(wchar_t **p) { return p; }
 783 };
 784 template<> struct wxStrtoxCharType<int>
 785 {
 786     typedef const char* Type; /* this one is never used */
 787     static char** AsPointer(int WXUNUSED_UNLESS_DEBUG(p))
 788     {
 789         wxASSERT_MSG( p == 0, "passing non-NULL int is invalid" );
 790         return NULL;
 791     }
 792 };
 793
 794 template<typename T>
 795 inline double wxStrtod(const wxString& nptr, T endptr)
 796 {
 797     if ( endptr == 0 )
 798     {
 799         // when we don't care about endptr, use the string representation that
 800         // doesn't require any conversion (it doesn't matter for this function
 801         // even if its UTF-8):
 802         return wxStrtod(nptr.wx_str(), (wxStringCharType**)NULL);
 803     }
 804     else
 805     {
 806         // note that it is important to use c_str() here and not mb_str() or
 807         // wc_str(), because we store the pointer into (possibly converted)
 808         // buffer in endptr and so it must be valid even when wxStrtod() returns
 809         typedef typename wxStrtoxCharType<T>::Type CharType;
 810         return wxStrtod((CharType)nptr.c_str(),
 811                         wxStrtoxCharType<T>::AsPointer(endptr));
 812     }
 813 }
 814 template<typename T>
 815 inline double wxStrtod(const wxCStrData& nptr, T endptr)
 816     { return wxStrtod(nptr.AsString(), endptr); }
 817
 818
 819 #define WX_STRTOX_FUNC(rettype, name, implA, implW)                           \
 820     /* see wxStrtod() above for explanation of this code: */                  \
 821     inline rettype name(const char *nptr, char **endptr, int base)            \
 822         { return implA(nptr, endptr, base); }                                 \
 823     inline rettype name(const wchar_t *nptr, wchar_t **endptr, int base)      \
 824         { return implW(nptr, endptr, base); }                                 \
 825     template<typename T>                                                      \
 826     inline rettype name(const wxCharTypeBuffer<T>& nptr, T **endptr, int base)\
 827         { return name(nptr.data(), endptr); }                                 \
 828     template<typename T>                                                      \
 829     inline rettype name(const wxString& nptr, T endptr, int base)             \
 830     {                                                                         \
 831         if ( endptr == 0 )                                                    \
 832             return name(nptr.wx_str(), (wxStringCharType**)NULL, base);       \
 833         else                                                                  \
 834         {                                                                     \
 835             typedef typename wxStrtoxCharType<T>::Type CharType;              \
 836             return name((CharType)nptr.c_str(),                               \
 837                         wxStrtoxCharType<T>::AsPointer(endptr),               \
 838                         base);                                                \
 839         }                                                                     \
 840     }                                                                         \
 841     template<typename T>                                                      \
 842     inline rettype name(const wxCStrData& nptr, T endptr, int base)           \
 843         { return name(nptr.AsString(), endptr, base); }
 844
 845 WX_STRTOX_FUNC(long, wxStrtol, wxCRT_StrtolA, wxCRT_StrtolW)
 846 WX_STRTOX_FUNC(unsigned long, wxStrtoul, wxCRT_StrtoulA, wxCRT_StrtoulW)
 847 #ifdef wxLongLong_t
 848 WX_STRTOX_FUNC(wxLongLong_t, wxStrtoll, wxCRT_StrtollA, wxCRT_StrtollW)
 849 WX_STRTOX_FUNC(wxULongLong_t, wxStrtoull, wxCRT_StrtoullA, wxCRT_StrtoullW)
 850 #endif // wxLongLong_t
 851
 852 #undef WX_STRTOX_FUNC
 853
 854
 855 // there is no command interpreter under CE, hence no system()
 856 #ifndef __WXWINCE__
 857
 858 // mingw32 doesn't provide _tsystem() even though it provides other stdlib.h
 859 // functions in their wide versions
 860 #ifdef wxCRT_SystemW
 861 inline int wxSystem(const wxString& str) { return wxCRT_SystemW(str.wc_str()); }
 862 #else
 863 inline int wxSystem(const wxString& str) { return wxCRT_SystemA(str.mb_str()); }
 864 #endif
 865
 866 #endif // !__WXWINCE__/__WXWINCE__
 867
 868 inline char* wxGetenv(const char *name) { return wxCRT_GetenvA(name); }
 869 inline wchar_t* wxGetenv(const wchar_t *name) { return wxCRT_GetenvW(name); }
 870 inline char* wxGetenv(const wxString& name) { return wxCRT_GetenvA(name.mb_str()); }
 871 inline char* wxGetenv(const wxCStrData& name) { return wxCRT_GetenvA(name.AsCharBuf()); }
 872 inline char* wxGetenv(const wxCharBuffer& name) { return wxCRT_GetenvA(name.data()); }
 873 inline wchar_t* wxGetenv(const wxWCharBuffer& name) { return wxCRT_GetenvW(name.data()); }
 874
 875 // ----------------------------------------------------------------------------
 876 //                            time.h functions
 877 // ----------------------------------------------------------------------------
 878
 879 inline size_t wxStrftime(char *s, size_t max,
 880                          const wxString& format, const struct tm *tm)
 881     { return wxCRT_StrftimeA(s, max, format.mb_str(), tm); }
 882
 883 inline size_t wxStrftime(wchar_t *s, size_t max,
 884                          const wxString& format, const struct tm *tm)
 885     { return wxCRT_StrftimeW(s, max, format.wc_str(), tm); }
 886
 887 // NB: we can't provide both char* and wchar_t* versions for obvious reasons
 888 //     and returning wxString wouldn't work either (it would be immediately
 889 //     destroyed and if assigned to char*/wchar_t*, the pointer would be
 890 //     invalid), so we only keep ASCII version, because the returned value
 891 //     is always ASCII anyway
 892 #define  wxAsctime   asctime
 893 #define  wxCtime     ctime
 894
 895
 896 // ----------------------------------------------------------------------------
 897 //                             ctype.h functions
 898 // ----------------------------------------------------------------------------
 899
 900 // FIXME-UTF8: we'd be better off implementing these ourselves, as the CRT
 901 //             version is locale-dependent
 902 // FIXME-UTF8: these don't work when EOF is passed in because of wxUniChar,
 903 //             is this OK or not?
 904
 905 inline bool wxIsalnum(const wxUniChar& c)  { return wxCRT_IsalnumW(c) != 0; }
 906 inline bool wxIsalpha(const wxUniChar& c)  { return wxCRT_IsalphaW(c) != 0; }
 907 inline bool wxIscntrl(const wxUniChar& c)  { return wxCRT_IscntrlW(c) != 0; }
 908 inline bool wxIsdigit(const wxUniChar& c)  { return wxCRT_IsdigitW(c) != 0; }
 909 inline bool wxIsgraph(const wxUniChar& c)  { return wxCRT_IsgraphW(c) != 0; }
 910 inline bool wxIslower(const wxUniChar& c)  { return wxCRT_IslowerW(c) != 0; }
 911 inline bool wxIsprint(const wxUniChar& c)  { return wxCRT_IsprintW(c) != 0; }
 912 inline bool wxIspunct(const wxUniChar& c)  { return wxCRT_IspunctW(c) != 0; }
 913 inline bool wxIsspace(const wxUniChar& c)  { return wxCRT_IsspaceW(c) != 0; }
 914 inline bool wxIsupper(const wxUniChar& c)  { return wxCRT_IsupperW(c) != 0; }
 915 inline bool wxIsxdigit(const wxUniChar& c) { return wxCRT_IsxdigitW(c) != 0; }
 916
 917 inline wxUniChar wxTolower(const wxUniChar& c) { return wxCRT_TolowerW(c); }
 918 inline wxUniChar wxToupper(const wxUniChar& c) { return wxCRT_ToupperW(c); }
 919
 920 #if WXWIN_COMPATIBILITY_2_8
 921 // we had goofed and defined wxIsctrl() instead of (correct) wxIscntrl() in the
 922 // initial versions of this header -- now it is too late to remove it so
 923 // although we fixed the function/macro name above, still provide the
 924 // backwards-compatible synonym.
 925 wxDEPRECATED( inline int wxIsctrl(const wxUniChar& c) );
 926 inline int wxIsctrl(const wxUniChar& c) { return wxIscntrl(c); }
 927 #endif // WXWIN_COMPATIBILITY_2_8
 928
 929 #endif /* _WX_WXCRT_H_ */