00001 /* 00002 * Copyright 2011 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_SCAN_FILTER_H_ 00020 #define NET_INSTAWEB_REWRITER_PUBLIC_SCAN_FILTER_H_ 00021 00022 #include "net/instaweb/htmlparse/public/empty_html_filter.h" 00023 #include "net/instaweb/rewriter/public/resource_tag_scanner.h" 00024 00025 namespace net_instaweb { 00026 00027 class HtmlCdataNode; 00028 class HtmlCharactersNode; 00029 class HtmlCommentNode; 00030 class HtmlDirectiveNode; 00031 class HtmlElement; 00032 class HtmlIEDirectiveNode; 00033 class RewriteDriver; 00034 00041 class ScanFilter : public EmptyHtmlFilter { 00042 public: 00043 explicit ScanFilter(RewriteDriver* driver); 00044 virtual ~ScanFilter(); 00045 00046 virtual void StartDocument(); 00047 virtual void StartElement(HtmlElement* element); 00048 virtual void Cdata(HtmlCdataNode* cdata); 00049 virtual void Comment(HtmlCommentNode* comment); 00050 virtual void IEDirective(HtmlIEDirectiveNode* directive); 00051 virtual void Characters(HtmlCharactersNode* characters); 00052 virtual void Directive(HtmlDirectiveNode* directive); 00053 virtual void Flush(); 00054 00055 virtual const char* Name() const { return "Scan"; } 00056 00057 private: 00058 RewriteDriver* driver_; 00059 ResourceTagScanner tag_scanner_; 00060 bool seen_any_nodes_; 00061 bool seen_refs_; 00062 bool seen_base_; 00063 bool seen_meta_tag_charset_; 00064 }; 00065 00066 } 00067 00068 #endif ///< NET_INSTAWEB_REWRITER_PUBLIC_SCAN_FILTER_H_