Page Speed Optimization Libraries
1.6.29.3
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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_COLLAPSE_WHITESPACE_FILTER_H_ 00020 #define NET_INSTAWEB_REWRITER_PUBLIC_COLLAPSE_WHITESPACE_FILTER_H_ 00021 00022 #include <vector> 00023 00024 #include "net/instaweb/htmlparse/public/empty_html_filter.h" 00025 #include "net/instaweb/htmlparse/public/html_name.h" 00026 #include "net/instaweb/util/public/basictypes.h" 00027 00028 namespace net_instaweb { 00029 class HtmlParse; 00030 class HtmlElement; 00031 class HtmlCharactersNode; 00032 00042 class CollapseWhitespaceFilter : public EmptyHtmlFilter { 00043 public: 00044 explicit CollapseWhitespaceFilter(HtmlParse* html_parse); 00045 virtual ~CollapseWhitespaceFilter(); 00046 00047 virtual void StartDocument(); 00048 virtual void StartElement(HtmlElement* element); 00049 virtual void EndElement(HtmlElement* element); 00050 virtual void Characters(HtmlCharactersNode* characters); 00051 virtual const char* Name() const { return "CollapseWhitespace"; } 00052 00053 private: 00054 HtmlParse* html_parse_; 00055 std::vector<HtmlName::Keyword> keyword_stack_; 00056 00057 DISALLOW_COPY_AND_ASSIGN(CollapseWhitespaceFilter); 00058 }; 00059 00060 } 00061 00062 #endif ///< NET_INSTAWEB_REWRITER_PUBLIC_COLLAPSE_WHITESPACE_FILTER_H_