Fixed bug 672641, implemented CharTokenizer which takes arbitrary char as delimiter. r=sicking

xpcom/ds/CharTokenizer.h

@@ -0,0 +1,126 @@
+/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
+/* ***** 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 TransforMiiX XSLT processor code.
+ *
+ * The Initial Developer of the Original Code is
+ * Netscape Communications Corporation.
+ * Portions created by the Initial Developer are Copyright (C) 2011
+ * the Initial Developer. All Rights Reserved.
+ *
+ * Contributor(s):
+ *   Shawn Gong <shawn@mozilla.com>
+ *
+ * Alternatively, the contents of this file may be used under the terms of
+ * either 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 ***** */
+
+#ifndef mozilla_CharTokenizer_h
+#define mozilla_CharTokenizer_h
+
+#include "nsDependentSubstring.h"
+
+namespace mozilla {
+
+template<PRUnichar delimiter>
+class CharTokenizer
+{
+public:
+    CharTokenizer(const nsSubstring& aSource)
+    {
+      aSource.BeginReading(mIter);
+      aSource.EndReading(mEnd);
+    }
+
+    /**
+     * Checks if any more tokens are available.
+     */
+    PRBool hasMoreTokens()
+    {
+      return mIter != mEnd;
+    }
+
+    /**
+     * Returns the next token.
+     */
+    const nsDependentSubstring nextToken()
+    {
+      nsSubstring::const_char_iterator begin = mIter;
+      while (mIter != mEnd && (*mIter) != delimiter) {
+        ++mIter;
+      }
+      nsSubstring::const_char_iterator end = mIter;
+      if (mIter != mEnd) {
+        ++mIter;
+      }
+
+      return Substring(begin, end);
+    }
+
+private:
+    nsSubstring::const_char_iterator mIter, mEnd;
+};
+
+template<char delimiter>
+class CCharTokenizer
+{
+public:
+    CCharTokenizer(const nsCSubstring& aSource)
+    {
+      aSource.BeginReading(mIter);
+      aSource.EndReading(mEnd);
+    }
+
+    /**
+     * Checks if any more tokens are available.
+     */
+    PRBool hasMoreTokens()
+    {
+      return mIter != mEnd;
+    }
+
+    /**
+     * Returns the next token.
+     */
+    const nsDependentCSubstring nextToken()
+    {
+      nsCSubstring::const_char_iterator begin = mIter;
+      while (mIter != mEnd && (*mIter) != delimiter) {
+        ++mIter;
+      }
+      nsCSubstring::const_char_iterator end = mIter;
+      if (mIter != mEnd) {
+        ++mIter;
+      }
+
+      return Substring(begin, end);
+    }
+
+private:
+    nsCSubstring::const_char_iterator mIter, mEnd;
+};
+
+} // namespace mozilla
+
+#endif /* mozilla_CharTokenizer_h */

xpcom/ds/Makefile.in

@@ -86,6 +86,7 @@ endif
 EXPORTS_NAMESPACES = mozilla
 
 EXPORTS_mozilla = \
+  CharTokenizer.h \
   TimeStamp.h \
   $(NULL)