Page Speed Optimization Libraries  1.3.25.1
net/instaweb/htmlparse/public/html_writer_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_HTMLPARSE_PUBLIC_HTML_WRITER_FILTER_H_
00020 #define NET_INSTAWEB_HTMLPARSE_PUBLIC_HTML_WRITER_FILTER_H_
00021 
00022 #include "net/instaweb/util/public/basictypes.h"
00023 #include "net/instaweb/htmlparse/public/html_element.h"
00024 #include "net/instaweb/htmlparse/public/html_filter.h"
00025 #include "net/instaweb/htmlparse/public/html_name.h"
00026 #include "net/instaweb/util/public/string.h"
00027 #include "net/instaweb/util/public/string_util.h"
00028 
00029 namespace net_instaweb {
00030 
00031 class HtmlCdataNode;
00032 class HtmlCharactersNode;
00033 class HtmlCommentNode;
00034 class HtmlDirectiveNode;
00035 class HtmlIEDirectiveNode;
00036 class HtmlParse;
00037 class Writer;
00038 
00039 class HtmlWriterFilter : public HtmlFilter {
00040  public:
00041   explicit HtmlWriterFilter(HtmlParse* html_parse);
00042 
00043   void set_writer(Writer* writer) { writer_ = writer; }
00044   virtual ~HtmlWriterFilter();
00045 
00046   virtual void StartDocument();
00047   virtual void EndDocument();
00048   virtual void StartElement(HtmlElement* element);
00049   virtual void EndElement(HtmlElement* element);
00050   virtual void Cdata(HtmlCdataNode* cdata);
00051   virtual void Comment(HtmlCommentNode* comment);
00052   virtual void IEDirective(HtmlIEDirectiveNode* directive);
00053   virtual void Characters(HtmlCharactersNode* characters);
00054   virtual void Directive(HtmlDirectiveNode* directive);
00055   virtual void Flush();
00056   virtual void DetermineEnabled();
00057 
00058   void set_max_column(int max_column) { max_column_ = max_column; }
00059   void set_case_fold(bool case_fold) { case_fold_ = case_fold; }
00060 
00061   virtual const char* Name() const { return "HtmlWriter"; }
00062 
00063  protected:
00065   virtual void Clear();
00066 
00067   Writer* writer() { return writer_; }
00068 
00070   void TerminateLazyCloseElement();
00071 
00072  private:
00073   void EmitBytes(const StringPiece& str);
00074 
00077   void EmitName(const HtmlName& name);
00078 
00079   HtmlElement::CloseStyle GetCloseStyle(HtmlElement* element);
00080 
00083   void EncodeBytes(const GoogleString& val, int quoteChar);
00084 
00085   HtmlParse* html_parse_;
00086   Writer* writer_;
00087 
00093   HtmlElement* lazy_close_element_;
00094 
00095   int column_;
00096   int max_column_;
00097   int write_errors_;
00098   bool case_fold_;
00099   GoogleString case_fold_buffer_;
00100 
00101   DISALLOW_COPY_AND_ASSIGN(HtmlWriterFilter);
00102 };
00103 
00104 }  
00105 
00106 #endif  ///< NET_INSTAWEB_HTMLPARSE_PUBLIC_HTML_WRITER_FILTER_H_
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