+ // buffer to avoid dynamic memory allocation each time for small strings
+ char szScratch[1024];
+
+ // number of characters in the buffer so far, must be less than lenMax
+ size_t lenCur = 0;
+
+ for ( size_t n = 0; ; n++ )
+ {
+ const wxChar chCur = format[n];
+
+ if ( chCur == wxT('%') )
+ {
+ static char s_szFlags[256] = "%";
+ size_t flagofs = 1;
+ bool adj_left = FALSE,
+ in_prec = FALSE,
+ prec_dot = FALSE,
+ done = FALSE;
+ int ilen = 0;
+ size_t min_width = 0,
+ max_width = wxSTRING_MAXLEN;
+ do
+ {
+
+#define CHECK_PREC \
+ if (in_prec && !prec_dot) \
+ { \
+ s_szFlags[flagofs++] = '.'; \
+ prec_dot = TRUE; \
+ }
+
+#define APPEND_CH(ch) \
+ if ( lenCur == lenMax ) \
+ return -1; \
+ \
+ buf[lenCur++] = ch
+
+#define APPEND_STR(s) \
+ { \
+ for ( const wxChar *p = s; *p; p++ ) \
+ { \
+ APPEND_CH(*p); \
+ } \
+ }
+
+ // what follows '%'?
+ const wxChar ch = format[++n];
+ switch ( ch )
+ {
+ case wxT('\0'):
+ APPEND_CH(_T('\0'));
+
+ done = TRUE;
+ break;
+
+ case wxT('%'):
+ APPEND_CH(_T('%'));
+ done = TRUE;
+ break;
+
+ case wxT('#'):
+ case wxT('0'):
+ case wxT(' '):
+ case wxT('+'):
+ case wxT('\''):
+ CHECK_PREC
+ s_szFlags[flagofs++] = ch;
+ break;
+
+ case wxT('-'):
+ CHECK_PREC
+ adj_left = TRUE;
+ s_szFlags[flagofs++] = ch;
+ break;
+
+ case wxT('.'):
+ CHECK_PREC
+ in_prec = TRUE;
+ prec_dot = FALSE;
+ max_width = 0;
+ // dot will be auto-added to s_szFlags if non-negative
+ // number follows
+ break;
+
+ case wxT('h'):
+ ilen = -1;
+ CHECK_PREC
+ s_szFlags[flagofs++] = ch;
+ break;
+
+ case wxT('l'):
+ ilen = 1;
+ CHECK_PREC
+ s_szFlags[flagofs++] = ch;
+ break;
+
+ case wxT('q'):
+ case wxT('L'):
+ ilen = 2;
+ CHECK_PREC
+ s_szFlags[flagofs++] = ch;
+ break;
+
+ case wxT('Z'):
+ ilen = 3;
+ CHECK_PREC
+ s_szFlags[flagofs++] = ch;
+ break;
+
+ case wxT('*'):
+ {
+ int len = va_arg(argptr, int);
+ if (in_prec)
+ {
+ if (len<0) break;
+ CHECK_PREC
+ max_width = len;
+ }
+ else
+ {
+ if (len<0)
+ {
+ adj_left = !adj_left;
+ s_szFlags[flagofs++] = '-';
+ len = -len;
+ }
+ min_width = len;
+ }
+ flagofs += ::sprintf(s_szFlags+flagofs,"%d",len);
+ }
+ break;
+
+ case wxT('1'): case wxT('2'): case wxT('3'):
+ case wxT('4'): case wxT('5'): case wxT('6'):
+ case wxT('7'): case wxT('8'): case wxT('9'):
+ {
+ int len = 0;
+ CHECK_PREC
+ while ( (format[n] >= wxT('0')) &&
+ (format[n] <= wxT('9')) )
+ {
+ s_szFlags[flagofs++] = format[n];
+ len = len*10 + (format[n] - wxT('0'));
+ n++;
+ }
+
+ if (in_prec)
+ max_width = len;
+ else
+ min_width = len;
+
+ n--; // the main loop pre-increments n again
+ }
+ break;
+
+ case wxT('d'):
+ case wxT('i'):
+ case wxT('o'):
+ case wxT('u'):
+ case wxT('x'):
+ case wxT('X'):
+ CHECK_PREC
+ s_szFlags[flagofs++] = ch;
+ s_szFlags[flagofs] = '\0';
+ if (ilen == 0 )
+ {
+ int val = va_arg(argptr, int);
+ ::sprintf(szScratch, s_szFlags, val);
+ }
+ else if (ilen == -1)
+ {
+ // NB: 'short int' value passed through '...'
+ // is promoted to 'int', so we have to get
+ // an int from stack even if we need a short
+ short int val = (short int) va_arg(argptr, int);
+ ::sprintf(szScratch, s_szFlags, val);
+ }
+ else if (ilen == 1)
+ {
+ long int val = va_arg(argptr, long int);
+ ::sprintf(szScratch, s_szFlags, val);
+ }
+ else if (ilen == 2)
+ {
+#if SIZEOF_LONG_LONG
+ long long int val = va_arg(argptr, long long int);
+ ::sprintf(szScratch, s_szFlags, val);
+#else // !long long
+ long int val = va_arg(argptr, long int);
+ ::sprintf(szScratch, s_szFlags, val);
+#endif // long long/!long long
+ }
+ else if (ilen == 3)
+ {
+ size_t val = va_arg(argptr, size_t);
+ ::sprintf(szScratch, s_szFlags, val);
+ }
+
+ {
+ const wxMB2WXbuf tmp =
+ wxConvLibc.cMB2WX(szScratch);
+ APPEND_STR(tmp);
+ }
+
+ done = TRUE;
+ break;
+
+ case wxT('e'):
+ case wxT('E'):
+ case wxT('f'):
+ case wxT('g'):
+ case wxT('G'):
+ CHECK_PREC
+ s_szFlags[flagofs++] = ch;
+ s_szFlags[flagofs] = '\0';
+ if (ilen == 2)
+ {
+ long double val = va_arg(argptr, long double);
+ ::sprintf(szScratch, s_szFlags, val);
+ }
+ else
+ {
+ double val = va_arg(argptr, double);
+ ::sprintf(szScratch, s_szFlags, val);
+ }
+
+ {
+ const wxMB2WXbuf tmp =
+ wxConvLibc.cMB2WX(szScratch);
+ APPEND_STR(tmp);
+ }
+
+ done = TRUE;
+ break;
+
+ case wxT('p'):
+ {
+ void *val = va_arg(argptr, void *);
+ CHECK_PREC
+ s_szFlags[flagofs++] = ch;
+ s_szFlags[flagofs] = '\0';
+ ::sprintf(szScratch, s_szFlags, val);
+
+ const wxMB2WXbuf tmp =
+ wxConvLibc.cMB2WX(szScratch);
+ APPEND_STR(tmp);
+
+ done = TRUE;
+ }
+ break;
+
+ case wxT('c'):
+ {
+ wxChar val = va_arg(argptr, int);
+ // we don't need to honor padding here, do we?
+ APPEND_CH(val);
+
+ done = TRUE;
+ }
+ break;
+
+ case wxT('s'):
+ if (ilen == -1)
+ {
+ // wx extension: we'll let %hs mean non-Unicode
+ // strings
+ char *val = va_arg(argptr, char *);
+#if wxUSE_UNICODE
+ // ASCII->Unicode constructor handles max_width
+ // right
+ wxString s(val, wxConvLibc, max_width);
+#else
+ size_t len = wxSTRING_MAXLEN;
+ if (val)
+ {
+ for ( len = 0;
+ val[len] && (len < max_width);
+ len++ )
+ ;
+ }
+ else
+ val = wxT("(null)");
+ wxString s(val, len);
+#endif
+ if (s.Len() < min_width)
+ s.Pad(min_width - s.Len(), wxT(' '), adj_left);
+
+ APPEND_STR(s);
+ }
+ else
+ {
+ wxChar *val = va_arg(argptr, wxChar *);
+ size_t len = wxSTRING_MAXLEN;
+ if (val)
+ {
+ for ( len = 0;
+ val[len] && (len < max_width);
+ len++ )
+ ;
+ }
+ else
+ val = wxT("(null)");
+
+ wxString s(val, len);
+ if (s.Len() < min_width)
+ s.Pad(min_width - s.Len(), wxT(' '), adj_left);
+
+ APPEND_STR(s);
+ }
+ done = TRUE;
+ break;
+
+ case wxT('n'):
+ if (ilen == 0)
+ {
+ int *val = va_arg(argptr, int *);
+ *val = lenCur;
+ }
+ else if (ilen == -1)
+ {
+ short int *val = va_arg(argptr, short int *);
+ *val = lenCur;
+ }
+ else if (ilen >= 1)
+ {
+ long int *val = va_arg(argptr, long int *);
+ *val = lenCur;
+ }
+ done = TRUE;
+ break;
+
+ default:
+ // bad format, leave unchanged
+ APPEND_CH(_T('%'));
+ APPEND_CH(ch);
+ done = TRUE;
+ break;
+ }
+ }
+ while (!done);
+ }
+ else
+ {
+ APPEND_CH(chCur);
+ }
+
+ // terminating NUL?
+ if ( !chCur )
+ break;
+ }
+
+ return lenCur;
+}
+
+#undef APPEND_CH
+#undef APPEND_STR
+#undef CHECK_PREC
+
+#endif // !wxVsnprintfA
+
+#if !defined(wxSnprintf_)
+int WXDLLEXPORT wxSnprintf_(wxChar *buf, size_t len, const wxChar *format, ...)
+{
+ 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