Page Speed Optimization Libraries  1.4.26.1
net/instaweb/htmlparse/public/logging_html_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 
00042 
00043 #ifndef NET_INSTAWEB_HTMLPARSE_PUBLIC_LOGGING_HTML_FILTER_H_
00044 #define NET_INSTAWEB_HTMLPARSE_PUBLIC_LOGGING_HTML_FILTER_H_
00045 
00046 #include "net/instaweb/util/public/basictypes.h"
00047 #include "net/instaweb/htmlparse/public/empty_html_filter.h"
00048 
00049 namespace net_instaweb {
00050 
00051 class HtmlCdataNode;
00052 class HtmlCommentNode;
00053 class HtmlDirectiveNode;
00054 class HtmlElement;
00055 class HtmlIEDirectiveNode;
00056 class StatisticsLog;
00057 
00058 class LoggingFilter : public EmptyHtmlFilter {
00059  public:
00063   enum Statistic {
00064     MIN_STAT = 0,
00065     NUM_EXPLICIT_CLOSED = 0,
00066     NUM_IMPLICIT_CLOSED,
00067     NUM_BRIEF_CLOSED,
00068     NUM_CLOSED,
00069     NUM_UNCLOSED,
00070     NUM_SPURIOUS_CLOSED,
00071     NUM_TAGS,
00072     NUM_CDATA,
00073     NUM_COMMENTS,
00074     NUM_DIRECTIVES,
00075     NUM_DOCUMENTS,
00076     NUM_IE_DIRECTIVES,
00077     NUM_IMG_TAGS,
00078     NUM_INLINED_IMG_TAGS,
00079     MAX_STAT
00080   };
00081 
00082   LoggingFilter();
00083 
00085   virtual void StartDocument();
00086   virtual void StartElement(HtmlElement* element);
00087   virtual void EndElement(HtmlElement* element);
00088   virtual void Cdata(HtmlCdataNode* cdata);
00089   virtual void Comment(HtmlCommentNode* comment);
00090   virtual void IEDirective(HtmlIEDirectiveNode* directive);
00091   virtual void Directive(HtmlDirectiveNode* directive);
00092   virtual const char* Name() const { return "Logging"; }
00093 
00095   inline int get(const Statistic statistic) const {
00096     return stats_[statistic];
00097   }
00098 
00100 
00102   void LogStatistics(StatisticsLog *statistics_log) const;
00103 
00104   int num_img_tags() const { return stats_[NUM_IMG_TAGS]; }
00105   int num_inlined_img_tags() const { return stats_[NUM_INLINED_IMG_TAGS]; }
00106 
00107   void Reset();
00108 
00109  private:
00110   int stats_[MAX_STAT];
00111 
00112   DISALLOW_COPY_AND_ASSIGN(LoggingFilter);
00113 };
00114 
00115 }  
00116 
00117 #endif  ///< NET_INSTAWEB_HTMLPARSE_PUBLIC_LOGGING_HTML_FILTER_H_
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