Page Speed Optimization Libraries  1.3.25.1
net/instaweb/rewriter/public/elide_attributes_filter.h
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00001 /*
00002  * Copyright 2010 Google Inc.
00003  *
00004  * Licensed under the Apache License, Version 2.0 (the "License");
00005  * you may not use this file except in compliance with the License.
00006  * You may obtain a copy of the License at
00007  *
00008  *      http:///www.apache.org/licenses/LICENSE-2.0
00009  *
00010  * Unless required by applicable law or agreed to in writing, software
00011  * distributed under the License is distributed on an "AS IS" BASIS,
00012  * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
00013  * See the License for the specific language governing permissions and
00014  * limitations under the License.
00015  */
00016 
00018 
00019 #ifndef NET_INSTAWEB_REWRITER_PUBLIC_ELIDE_ATTRIBUTES_FILTER_H_
00020 #define NET_INSTAWEB_REWRITER_PUBLIC_ELIDE_ATTRIBUTES_FILTER_H_
00021 
00022 #include <map>
00023 #include <set>
00024 
00025 #include "net/instaweb/htmlparse/public/empty_html_filter.h"
00026 #include "net/instaweb/htmlparse/public/html_name.h"
00027 #include "net/instaweb/util/public/basictypes.h"
00028 
00029 namespace net_instaweb {
00030 class HtmlElement;
00031 class HtmlParse;
00032 
00034 class ElideAttributesFilter : public EmptyHtmlFilter {
00035  public:
00036   explicit ElideAttributesFilter(HtmlParse* html_parse);
00037   virtual ~ElideAttributesFilter();
00038 
00039   virtual void StartElement(HtmlElement* element);
00040   virtual const char* Name() const { return "ElideAttributes"; }
00041 
00042  private:
00043   struct AttrValue {
00044     const char* attr_value;
00045     bool requires_version_5; 
00046   };
00047 
00048   typedef std::set<HtmlName::Keyword> KeywordSet;
00049   typedef std::map<HtmlName::Keyword, KeywordSet> KeywordSetMap;
00050   typedef std::map<HtmlName::Keyword, AttrValue> ValueMap;
00051   typedef std::map<HtmlName::Keyword, ValueMap> ValueMapMap;
00052 
00053   HtmlParse* html_parse_;
00054   KeywordSetMap one_value_attrs_map_; 
00055   ValueMapMap default_value_map_; 
00056 
00057   DISALLOW_COPY_AND_ASSIGN(ElideAttributesFilter);
00058 };
00059 
00060 }  
00061 
00062 #endif  ///< NET_INSTAWEB_REWRITER_PUBLIC_ELIDE_ATTRIBUTES_FILTER_H_
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