wxString::Format() added

[wxWidgets.git] / src / common / string.cpp

diff --git a/src/common/string.cpp b/src/common/string.cpp
index 280e105f2539c09d15fb2b75b1bf7c9ba53e5990..764d0a41c658f30b4c553aaa2dc8c44a8170294f 100644 (file)
--- a/src/common/string.cpp
+++ b/src/common/string.cpp
@@ -107,7 +107,7 @@ extern const wxChar WXDLLEXPORT *wxEmptyString = &g_strEmpty.dummy;
 //       function wxVsnprintfA (A for ANSI), should also find one for Unicode
 //       strings in Unicode build
 #ifdef __WXMSW__
-    #if defined(__VISUALC__) || defined(wxUSE_NORLANDER_HEADERS)
+    #if (defined(__VISUALC__) || defined(wxUSE_NORLANDER_HEADERS)) && !defined(__MINGW32__)
         #define wxVsnprintfA     _vsnprintf
     #endif
 #else   // !Windows
@@ -203,7 +203,10 @@ extern int WXDLLEXPORT wxVsnprintf(wxChar *buf, size_t len,
     // vsnprintf() will not terminate the string with '\0' if there is not
     // enough place, but we want the string to always be NUL terminated
     int rc = wxVsnprintfA(buf, len - 1, format, argptr);
-    buf[len] = 0;
+    if ( rc == -1 )
+    {
+        buf[len] = 0;
+    }
 
     return rc;
 #endif // Unicode/ANSI
@@ -1025,6 +1028,49 @@ int wxString::Find(const wxChar *pszSub) const
   return (psz == NULL) ? wxNOT_FOUND : psz - (const wxChar*) m_pchData;
 }
 
+// ----------------------------------------------------------------------------
+// conversion to numbers
+// ----------------------------------------------------------------------------
+
+bool wxString::ToLong(long *val) const
+{
+    wxCHECK_MSG( val, FALSE, _T("NULL pointer in wxString::ToLong") );
+
+    const wxChar *start = c_str();
+    wxChar *end;
+    *val = wxStrtol(start, &end, 10);
+
+    // return TRUE only if scan was stopped by the terminating NUL and if the
+    // string was not empty to start with
+    return !*end && (end != start);
+}
+
+bool wxString::ToULong(unsigned long *val) const
+{
+    wxCHECK_MSG( val, FALSE, _T("NULL pointer in wxString::ToULong") );
+
+    const wxChar *start = c_str();
+    wxChar *end;
+    *val = wxStrtoul(start, &end, 10);
+
+    // return TRUE only if scan was stopped by the terminating NUL and if the
+    // string was not empty to start with
+    return !*end && (end != start);
+}
+
+bool wxString::ToDouble(double *val) const
+{
+    wxCHECK_MSG( val, FALSE, _T("NULL pointer in wxString::ToDouble") );
+
+    const wxChar *start = c_str();
+    wxChar *end;
+    *val = wxStrtod(start, &end);
+
+    // return TRUE only if scan was stopped by the terminating NUL and if the
+    // string was not empty to start with
+    return !*end && (end != start);
+}
+
 // ---------------------------------------------------------------------------
 // stream-like operators
 // ---------------------------------------------------------------------------
@@ -1056,6 +1102,27 @@ wxString& wxString::operator<<(double d)
 // formatted output
 // ---------------------------------------------------------------------------
 
+/* static */
+wxString wxString::Format(const wxChar *pszFormat, ...)
+{
+  va_list argptr;
+  va_start(argptr, pszFormat);
+
+  wxString s = FormatV(pszFormat, argptr);
+
+  va_end(argptr);
+
+  return s;
+}
+
+/* static */
+wxString wxString::FormatV(const wxChar *pszFormat, va_list argptr)
+{
+    wxString s;
+    s.Printf(pszFormat, argptr);
+    return s;
+}
+
 int wxString::Printf(const wxChar *pszFormat, ...)
 {
   va_list argptr;
@@ -1640,17 +1707,6 @@ size_t wxString::find_last_not_of(wxChar ch, size_t nStart) const
     return npos;
 }
 
-wxString wxString::substr(size_t nStart, size_t nLen) const
-{
-  // npos means 'take all'
-  if ( nLen == npos )
-    nLen = 0;
-
-  wxASSERT( nStart + nLen <= Len() );
-
-  return wxString(c_str() + nStart, nLen == npos ? 0 : nLen);
-}
-
 wxString& wxString::erase(size_t nStart, size_t nLen)
 {
   wxString strTmp(c_str(), nStart);