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      1 /*
      2  * libjingle
      3  * Copyright 2004--2005, Google Inc.
      4  *
      5  * Redistribution and use in source and binary forms, with or without
      6  * modification, are permitted provided that the following conditions are met:
      7  *
      8  *  1. Redistributions of source code must retain the above copyright notice,
      9  *     this list of conditions and the following disclaimer.
     10  *  2. Redistributions in binary form must reproduce the above copyright notice,
     11  *     this list of conditions and the following disclaimer in the documentation
     12  *     and/or other materials provided with the distribution.
     13  *  3. The name of the author may not be used to endorse or promote products
     14  *     derived from this software without specific prior written permission.
     15  *
     16  * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR IMPLIED
     17  * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
     18  * MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO
     19  * EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
     20  * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
     21  * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS;
     22  * OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
     23  * WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR
     24  * OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF
     25  * ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
     26  */
     27 
     28 #ifndef TALK_XMLLITE_XMLNSSTACK_H_
     29 #define TALK_XMLLITE_XMLNSSTACK_H_
     30 
     31 #include <string>
     32 #include <vector>
     33 #include "talk/base/scoped_ptr.h"
     34 #include "talk/xmllite/qname.h"
     35 
     36 namespace buzz {
     37 
     38 class XmlnsStack {
     39 public:
     40   XmlnsStack();
     41   ~XmlnsStack();
     42 
     43   void AddXmlns(const std::string& prefix, const std::string& ns);
     44   void RemoveXmlns();
     45   void PushFrame();
     46   void PopFrame();
     47   void Reset();
     48 
     49   std::pair<std::string, bool> NsForPrefix(const std::string& prefix);
     50   bool PrefixMatchesNs(const std::string & prefix, const std::string & ns);
     51   std::pair<std::string, bool> PrefixForNs(const std::string& ns, bool isAttr);
     52   std::pair<std::string, bool> AddNewPrefix(const std::string& ns, bool isAttr);
     53   std::string FormatQName(const QName & name, bool isAttr);
     54 
     55 private:
     56 
     57   talk_base::scoped_ptr<std::vector<std::string> > pxmlnsStack_;
     58   talk_base::scoped_ptr<std::vector<size_t> > pxmlnsDepthStack_;
     59 };
     60 }
     61 
     62 #endif  // TALK_XMLLITE_XMLNSSTACK_H_
     63