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/*
* Copyright 2010 Google Inc.
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
// Author: jmarantz@google.com (Joshua Marantz)
#ifndef NET_INSTAWEB_HTMLPARSE_PUBLIC_FILE_DRIVER_H_
#define NET_INSTAWEB_HTMLPARSE_PUBLIC_FILE_DRIVER_H_
#include "net/instaweb/htmlparse/public/html_writer_filter.h"
#include "net/instaweb/htmlparse/public/logging_html_filter.h"
#include "pagespeed/kernel/base/basictypes.h"
#include "pagespeed/kernel/base/string.h"
namespace net_instaweb {
class FileSystem;
class HtmlParse;
class MessageHandler;
class StatisticsLog;
// Framework for reading an input HTML file, running it through
// a chain of HTML filters, and writing an output file.
class FileDriver {
public:
FileDriver(HtmlParse* html_parse, FileSystem* file_system);
// Return the parser. This can be used to add filters.
HtmlParse* html_parse() { return html_parse_; }
// Helper function to generate an output .html filename from
// an input filename. Given "/a/b/c.html" returns "a/b/c.out.html".
// Returns false if the input file does not contain a "."
static bool GenerateOutputFilename(
const char* infilename, GoogleString* outfilename);
// Helper function to generate an output .stats filename from
// an input filename. Given "/a/b/c.html" returns "a/b/c.stats".
// Returns false if the input file does not contain a "."
static bool GenerateStatsFilename(
const char* infilename, GoogleString* statsfilename);
// Error messages are sent to the message file, true is returned
// if the file was parsed successfully.
bool ParseFile(const char* infilename,
const char* outfilename,
const char* statsfilename,
MessageHandler* handler);
// Indicates that we should Flush the parser every x bytes. Disabled if x<=0.
void set_flush_byte_count(int x) { flush_byte_count_ = x; }
private:
HtmlParse* html_parse_;
LoggingFilter logging_filter_;
StatisticsLog* stats_log_;
HtmlWriterFilter html_write_filter_;
bool filters_added_;
FileSystem* file_system_;
int flush_byte_count_;
DISALLOW_COPY_AND_ASSIGN(FileDriver);
};
} // namespace net_instaweb
#endif // NET_INSTAWEB_HTMLPARSE_PUBLIC_FILE_DRIVER_H_
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