bug 390048 Complex Text Line Breaking with Uniscribe for Windows #2. patch by <nattachai@gmail.com> r+sr=roc, a=dsicor

intl/lwbrk/src/nsUniscribeBreaker.cpp

@@ -0,0 +1,88 @@
+/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
+/* ***** BEGIN LICENSE BLOCK *****
+ * Version: MPL 1.1/GPL 2.0/LGPL 2.1
+ *
+ * The contents of this file are subject to the Mozilla Public License Version
+ * 1.1 (the "License"); you may not use this file except in compliance with
+ * the License. You may obtain a copy of the License at
+ * http://www.mozilla.org/MPL/
+ *
+ * Software distributed under the License is distributed on an "AS IS" basis,
+ * WITHOUT WARRANTY OF ANY KIND, either express or implied. See the License
+ * for the specific language governing rights and limitations under the
+ * License.
+ *
+ * The Original Code is mozilla.org code.
+ *
+ * The Initial Developer of the Original Code is
+ * Pattara Kiatisevi <ott@linux.thai.net>.
+ * Portions created by the Initial Developer are Copyright (C) 2007
+ * the Initial Developer. All Rights Reserved.
+ *
+ * Contributor(s):
+ * - Nattachai Ungsriwong <nattachai@gmail.com>
+ * - Theppitak Karoonboonyanan <thep@linux.thai.net>
+ * - Vee Satayamas <vsatayamas@gmail.com> 
+ * - Pattara Kiatisevi <ott@linux.thai.net>
+ *
+ * Alternatively, the contents of this file may be used under the terms of
+ * either of the GNU General Public License Version 2 or later (the "GPL"),
+ * or the GNU Lesser General Public License Version 2.1 or later (the "LGPL"),
+ * in which case the provisions of the GPL or the LGPL are applicable instead
+ * of those above. If you wish to allow use of your version of this file only
+ * under the terms of either the GPL or the LGPL, and not to allow others to
+ * use your version of this file under the terms of the MPL, indicate your
+ * decision by deleting the provisions above and replace them with the notice
+ * and other provisions required by the GPL or the LGPL. If you do not delete
+ * the provisions above, a recipient may use your version of this file under
+ * the terms of any one of the MPL, the GPL or the LGPL.
+ *
+ * ***** END LICENSE BLOCK ***** */
+
+#include "nsComplexBreaker.h"
+
+#include <Usp10.h>
+#include "nsUTF8Utils.h"
+#include "nsString.h"
+#include "nsTArray.h"
+
+void
+NS_GetComplexLineBreaks(const PRUnichar* aText, PRUint32 aLength,
+                        PRPackedBool* aBreakBefore)
+{
+  NS_ASSERTION(aText, "aText shouldn't be null"); 
+  int outItems = 0;
+  HRESULT result;
+  nsAutoTArray<SCRIPT_ITEM, 64> items;
+
+  memset(aBreakBefore, PR_FALSE, aLength);
+
+  if (!items.AppendElements(64))
+    return;
+
+  do {
+    result = ScriptItemize(aText, aLength, items.Length(), NULL, NULL, items.Elements(), &outItems);
+
+    if (result == E_OUTOFMEMORY) {
+      if (!items.AppendElements(items.Length()))
+        return;
+    }
+  } while (result == E_OUTOFMEMORY);
+
+  for (int iItem = 0; iItem < outItems; ++iItem)  {
+    PRUint32 endOffset = (iItem + 1 == outItems ? aLength : items[iItem + 1].iCharPos);
+    PRUint32 startOffset = items[iItem].iCharPos;
+    nsAutoTArray<SCRIPT_LOGATTR, 64> sla;
+    
+    if (!sla.AppendElements(endOffset - startOffset))
+      return;
+
+    if (ScriptBreak(aText, aLength, &items[iItem].a, sla.Elements()) < 0) 
+      return;
+
+    for (PRUint32 j=0; j+startOffset < endOffset; ++j) {
+       aBreakBefore[j+startOffset] = sla[j].fSoftBreak;
+    }
+  }
+  
+}