Page Speed Optimization Libraries  1.3.25.1
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net_instaweb::CollapseWhitespaceFilter Class Reference

#include "collapse_whitespace_filter.h"

Inheritance diagram for net_instaweb::CollapseWhitespaceFilter:
net_instaweb::EmptyHtmlFilter net_instaweb::HtmlFilter

List of all members.

Public Member Functions

 CollapseWhitespaceFilter (HtmlParse *html_parse)
virtual void StartDocument ()
virtual void StartElement (HtmlElement *element)
virtual void EndElement (HtmlElement *element)
virtual void Characters (HtmlCharactersNode *characters)
 Called for raw characters between tags.
virtual const char * Name () const
 The name of this filter -- used for logging and debugging.

Detailed Description

Reduce the size of the HTML by collapsing whitespace (except within certain tags, e.g.

 and <script>).  Note that this is a dangerous filter, as
    CSS can be used to make the HTML whitespace-sensitive in unpredictable
    places; thus, it should only be used for content that you are sure will not
    do this.
Todo:
TODO(mdsteele): Use the CSS parser (once it's finished) to try to intelligently determine when the CSS "white-space: pre" property is in use; that would make this filter much safer.

Member Function Documentation

Starts a new document. Filters should clear their state in this function, as the same Filter instance may be used for multiple HTML documents.

Reimplemented from net_instaweb::EmptyHtmlFilter.

When an HTML element is encountered during parsing, each filter's StartElement method is called. The HtmlElement lives for the entire duration of the document.

Todo:
TODO(jmarantz): consider passing handles rather than pointers and reference-counting them instead to save memory on long documents.

Reimplemented from net_instaweb::EmptyHtmlFilter.


The documentation for this class was generated from the following file:
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