Changeset 51795 in vbox for trunk/src/VBox/Runtime/common/string

Timestamp:

Jul 2, 2014 1:01:50 AM (11 years ago)

Author:

vboxsync

svn:sync-xref-src-repo-rev:

94636

Message:

UTF-8 case folding hacks to deal with U+0130, U+0131, U+017f and U+01fbe since these doesn't have any roundtrip compatible mappings nor have case folds into codepoins with the same UTF-8 length. They map to other characters in other blocks.

File:

• trunk/src/VBox/Runtime/common/string/utf-8-case.cpp (modified) (2 diffs)

trunk/src/VBox/Runtime/common/string/utf-8-case.cpp

@@ -290 +290 @@
         if (RT_SUCCESS(rc))
         {
-            uc = RTUniCpToLower(uc);
-            pszDst = RTStrPutCp(pszDst, uc);
+            RTUNICP uc2 = RTUniCpToLower(uc);
+            if (RT_LIKELY(   uc2 == uc
+                          || RTUniCpCalcUtf8Len(uc2) == RTUniCpCalcUtf8Len(uc)))
+                pszDst = RTStrPutCp(pszDst, uc2);
+            else
+                pszDst = RTStrPutCp(pszDst, uc);
         }
         else
@@ -323 +327 @@
         if (RT_SUCCESS(rc))
         {
-            uc = RTUniCpToUpper(uc);
-            pszDst = RTStrPutCp(pszDst, uc);
+            RTUNICP uc2 = RTUniCpToUpper(uc);
+            if (RT_LIKELY(   uc2 == uc
+                          || RTUniCpCalcUtf8Len(uc2) == RTUniCpCalcUtf8Len(uc)))
+                pszDst = RTStrPutCp(pszDst, uc2);
+            else
+                pszDst = RTStrPutCp(pszDst, uc);
         }
         else