X-Git-Url: https://git.saurik.com/wxWidgets.git/blobdiff_plain/03647350fc7cd141953c72e0284e928847d30f44..90fae9d2cfd82625c8c8279660237514470bc31a:/src/osx/core/strconv_cf.cpp?ds=sidebyside

diff --git a/src/osx/core/strconv_cf.cpp b/src/osx/core/strconv_cf.cpp
index 4355ee032a..5f37413386 100644
--- a/src/osx/core/strconv_cf.cpp
+++ b/src/osx/core/strconv_cf.cpp
@@ -33,6 +33,7 @@
  * assume ABI compatibility even within a given wxWidgets release.
  */
 
+#if wxUSE_FONTMAP
 WXDLLIMPEXP_BASE wxMBConv* new_wxMBConv_cf( const char* name)
 {
     wxMBConv_cf *result = new wxMBConv_cf(name);
@@ -44,6 +45,7 @@ WXDLLIMPEXP_BASE wxMBConv* new_wxMBConv_cf( const char* name)
     else
         return result;
 }
+#endif // wxUSE_FONTMAP
 
 WXDLLIMPEXP_BASE wxMBConv* new_wxMBConv_cf(wxFontEncoding encoding)
 {
@@ -88,6 +90,14 @@ WXDLLIMPEXP_BASE wxMBConv* new_wxMBConv_cf(wxFontEncoding encoding)
         if ( theString == NULL )
             return wxCONV_FAILED;
 
+        // Ensure that the string is in canonical composed form (NFC): this is
+        // important because Darwin uses decomposed form (NFD) for e.g. file
+        // names but we want to use NFC internally.
+        wxCFRef<CFMutableStringRef>
+            cfMutableString(CFStringCreateMutableCopy(NULL, 0, theString));
+        CFStringNormalize(cfMutableString, kCFStringNormalizationFormC);
+        theString = cfMutableString;
+
         /* NOTE: The string content includes the NULL element if the source string did
          * That means we have to do nothing special because the destination will have
          * the NULL element iff the source did and the NULL element will be included
@@ -210,13 +220,15 @@ WXDLLIMPEXP_BASE wxMBConv* new_wxMBConv_cf(wxFontEncoding encoding)
                 m_encoding,
                 0, // FAIL on unconvertible characters
                 false, // not an external representation
-                // if dstSize is 0 then pass NULL to get required length in usedBufLen
-                (dstSize != 0)?(UInt8*)dst:NULL,
+                (UInt8*)dst,
                 dstSize,
                 &usedBufLen
             );
 
-        if(charsConverted < CFStringGetLength(theString) )
+        // when dst is non-NULL, we check usedBufLen against dstSize as
+        // CFStringGetBytes sometimes treats dst as being NULL when dstSize==0
+        if( (charsConverted < CFStringGetLength(theString)) ||
+                (dst && (size_t) usedBufLen > dstSize) )
             return wxCONV_FAILED;
 
         return usedBufLen;