// empty C style string: points to 'string data' byte of g_strEmpty
extern const char *g_szNul = &g_strEmpty.dummy;
+// ----------------------------------------------------------------------------
+// conditional compilation
+// ----------------------------------------------------------------------------
+
+// we want to find out if the current platform supports vsnprintf()-like
+// function: for Unix this is done with configure, for Windows we test the
+// compiler explicitly.
+#ifdef __WXMSW__
+ #ifdef _MSC_VER
+ #define wxVsprintf _vsnprintf
+ #endif
+#else // !Windows
+ #ifdef HAVE_VSNPRINTF
+ #define wxVsprintf vsnprintf
+ #endif
+#endif // Windows/!Windows
+
+#ifndef wxVsprintf
+ // in this case we'll use vsprintf() (which is ANSI and thus should be
+ // always available), but it's unsafe because it doesn't check for buffer
+ // size - so give a warning
+ #define wxVsprintf(buffer,len,format,argptr) vsprintf(buffer,format, argptr)
+ #pragma message("Using sprintf() because no snprintf()-like function defined")
+#endif
+
// ----------------------------------------------------------------------------
// global functions
// ----------------------------------------------------------------------------
// static buffer to avoid dynamic memory allocation each time
static char s_szScratch[1024];
+ // NB: wxVsprintf() may return either less than the buffer size or -1 if there
+ // is not enough place depending on implementation
int iLen = wxVsprintf(s_szScratch, WXSIZEOF(s_szScratch), pszFormat, argptr);
char *buffer;
- if ( (size_t)iLen < WXSIZEOF(s_szScratch) ) {
+ if ( iLen < (int)WXSIZEOF(s_szScratch) ) {
buffer = s_szScratch;
}
else {