+#if !defined(wxVsnprintf_)
+int WXDLLEXPORT wxVsnprintf_(wxChar *buf, size_t lenMax,
+ const wxChar *format, va_list argptr)
+{
+ // 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;
projects / wxWidgets.git / blobdiff