+ va_list argptr;
+ va_start(argptr, format);
+
+ int iLen = wxVsnprintf_(buf, len, format, argptr);
+
+ va_end(argptr);
+
+ return iLen;
+}
+#endif // wxSnprintf_
+
+// ----------------------------------------------------------------------------
+// implement the standard IO functions for wide char if libc doesn't have them
+// ----------------------------------------------------------------------------
+
+#ifdef wxNEED_FPUTWC
+
+int wxFputs(const wchar_t *ws, FILE *stream)
+{
+ // counting the number of wide characters written isn't worth the trouble,
+ // simply distinguish between ok and error
+ return fputs(wxConvLibc.cWC2MB(ws), stream) == -1 ? -1 : 0;
+}
+
+int /* not wint_t */ wxPutc(wchar_t wc, FILE *stream)
+{
+ wchar_t ws[2] = { wc, L'\0' };
+
+ return wxFputs(ws, stream);
+}
+
+#endif // wxNEED_FPUTWC
+
+// NB: we only implement va_list functions here, the ones taking ... are
+// defined below for wxNEED_PRINTF_CONVERSION case anyhow and we reuse
+// the definitions there to avoid duplicating them here
+#ifdef wxNEED_WPRINTF
+
+// TODO: implement the scanf() functions
+int vwscanf(const wxChar *format, va_list argptr)
+{
+ wxFAIL_MSG( _T("TODO") );
+
+ return -1;
+}
+
+int vswscanf(const wxChar *ws, const wxChar *format, va_list argptr)
+{
+ wxFAIL_MSG( _T("TODO") );
+
+ return -1;
+}
+
+int vfwscanf(FILE *stream, const wxChar *format, va_list argptr)
+{
+ wxFAIL_MSG( _T("TODO") );
+
+ return -1;
+}
+
+#define vswprintf wxVsnprintf_
+
+int vfwprintf(FILE *stream, const wxChar *format, va_list argptr)
+{
+ wxString s;
+ int rc = s.PrintfV(format, argptr);
+
+ if ( rc != -1 )
+ {
+ // we can't do much better without Unicode support in libc...
+ if ( fprintf(stream, "%s", (const char*)s.mb_str() ) == -1 )
+ return -1;
+ }
+
+ return rc;
+}
+
+int vwprintf(const wxChar *format, va_list argptr)
+{
+ return wxVfprintf(stdout, format, argptr);
+}
+
+#endif // wxNEED_WPRINTF
+
+#ifdef wxNEED_PRINTF_CONVERSION
+
+// ----------------------------------------------------------------------------
+// wxFormatConverter: class doing the "%s" -> "%ls" conversion
+// ----------------------------------------------------------------------------
+
+/*
+ Here are the gory details. We want to follow the Windows/MS conventions,
+ that is to have
+
+ In ANSI mode:
+
+ format specifier results in
+ -----------------------------------
+ %c, %hc, %hC char
+ %lc, %C, %lC wchar_t
+
+ In Unicode mode:
+
+ format specifier results in
+ -----------------------------------
+ %hc, %C, %hC char
+ %c, %lc, %lC wchar_t
+
+
+ while on POSIX systems we have %C identical to %lc and %c always means char
+ (in any mode) while %lc always means wchar_t,
+
+ So to use native functions in order to get our semantics we must do the
+ following translations in Unicode mode (nothing to do in ANSI mode):
+
+ wxWindows specifier POSIX specifier
+ ----------------------------------------
+
+ %hc, %C, %hC %c
+ %c %lc
+
+
+ And, of course, the same should be done for %s as well.
+*/
+
+class wxFormatConverter
+{
+public:
+ wxFormatConverter(const wxChar *format);
+
+ // notice that we only translated the string if m_fmtOrig == NULL (as set
+ // by CopyAllBefore()), otherwise we should simply use the original format
+ operator const wxChar *() const
+ { return m_fmtOrig ? m_fmtOrig : m_fmt.c_str(); }
+
+private:
+ // copy another character to the translated format: this function does the
+ // copy if we are translating but doesn't do anything at all if we don't,
+ // so we don't create the translated format string at all unless we really
+ // need to (i.e. InsertFmtChar() is called)
+ wxChar CopyFmtChar(wxChar ch)
+ {
+ if ( !m_fmtOrig )
+ {
+ // we're translating, do copy
+ m_fmt += ch;
+ }
+ else
+ {
+ // simply increase the count which should be copied by
+ // CopyAllBefore() later if needed
+ m_nCopied++;
+ }
+
+ return ch;
+ }
+
+ // insert an extra character
+ void InsertFmtChar(wxChar ch)
+ {
+ if ( m_fmtOrig )
+ {
+ // so far we haven't translated anything yet
+ CopyAllBefore();
+ }
+
+ m_fmt += ch;
+ }
+
+ void CopyAllBefore()
+ {
+ wxASSERT_MSG( m_fmtOrig && m_fmt.empty(), _T("logic error") );
+
+ m_fmt = wxString(m_fmtOrig, m_nCopied);
+
+ // we won't need it any longer
+ m_fmtOrig = NULL;
+ }
+
+ static bool IsFlagChar(wxChar ch)
+ {
+ return ch == _T('-') || ch == _T('+') ||
+ ch == _T('0') || ch == _T(' ') || ch == _T('#');
+ }
+
+ void SkipDigits(const wxChar **ppc)
+ {
+ while ( **ppc >= _T('0') && **ppc <= _T('9') )
+ CopyFmtChar(*(*ppc)++);
+ }
+
+ // the translated format
+ wxString m_fmt;
+
+ // the original format
+ const wxChar *m_fmtOrig;
+
+ // the number of characters already copied
+ size_t m_nCopied;
+};
+
+wxFormatConverter::wxFormatConverter(const wxChar *format)
+{
+ m_fmtOrig = format;
+ m_nCopied = 0;
+
+ while ( *format )
+ {
+ if ( CopyFmtChar(*format++) == _T('%') )
+ {
+ // skip any flags
+ while ( IsFlagChar(*format) )
+ CopyFmtChar(*format++);
+
+ // and possible width
+ if ( *format == _T('*') )
+ CopyFmtChar(*format++);
+ else
+ SkipDigits(&format);
+
+ // precision?
+ if ( *format == _T('.') )
+ {
+ CopyFmtChar(*format++);
+ if ( *format == _T('*') )
+ CopyFmtChar(*format++);
+ else
+ SkipDigits(&format);
+ }
+
+ // next we can have a size modifier
+ enum
+ {
+ Default,
+ Short,
+ Long
+ } size;
+
+ switch ( *format )
+ {
+ case _T('h'):
+ size = Short;
+ format++;
+ break;
+
+ case _T('l'):
+ // "ll" has a different meaning!
+ if ( format[1] != _T('l') )
+ {
+ size = Long;
+ format++;
+ break;
+ }
+ //else: fall through
+
+ default:
+ size = Default;
+ }
+
+ // and finally we should have the type
+ switch ( *format )
+ {
+ case _T('C'):
+ case _T('S'):
+ // %C and %hC -> %c and %lC -> %lc
+ if ( size == Long )
+ CopyFmtChar(_T('l'));
+
+ InsertFmtChar(*format++ == _T('C') ? _T('c') : _T('s'));
+ break;
+
+ case _T('c'):
+ case _T('s'):
+ // %c -> %lc but %hc stays %hc and %lc is still %lc
+ if ( size == Default)
+ InsertFmtChar(_T('l'));
+ // fall through
+
+ default:
+ // nothing special to do
+ if ( size != Default )
+ CopyFmtChar(*(format - 1));
+ CopyFmtChar(*format++);
+ }
+ }
+ }
+}
+
+#else // !wxNEED_PRINTF_CONVERSION
+ // no conversion necessary
+ #define wxFormatConverter(x) (x)
+#endif // wxNEED_PRINTF_CONVERSION/!wxNEED_PRINTF_CONVERSION
+
+#ifdef __WXDEBUG__
+// For testing the format converter
+wxString wxConvertFormat(const wxChar *format)
+{
+ return wxString(wxFormatConverter(format));
projects / wxWidgets.git / blobdiff