chrome/browser/parsers/metadata_parser_filebase.h

   1 // Copyright (c) 2011 The Chromium Authors. All rights reserved.
   2 // Use of this source code is governed by a BSD-style license that can be
   3 // found in the LICENSE file.
   4
   5 #ifndef CHROME_BROWSER_PARSERS_METADATA_PARSER_FILEBASE_H_
   6 #define CHROME_BROWSER_PARSERS_METADATA_PARSER_FILEBASE_H_
   7
   8 #include <string>
   9
  10 #include "base/basictypes.h"
  11 #include "base/containers/hash_tables.h"
  12 #include "base/files/file_path.h"
  13 #include "chrome/browser/parsers/metadata_parser.h"
  14
  15 typedef base::hash_map<std::string, std::string> PropertyMap;
  16
  17 // Parser for the file type. Allows for parsing of files, and gets
  18 // properties associated with files.
  19 class FileMetadataParser : public MetadataParser {
  20  public:
  21   explicit FileMetadataParser(const base::FilePath& path);
  22
  23   virtual ~FileMetadataParser();
  24
  25   // Implementation of MetadataParser
  26   virtual bool Parse() OVERRIDE;
  27   virtual bool GetProperty(const std::string& key, std::string* value) OVERRIDE;
  28
  29   virtual MetadataPropertyIterator* GetPropertyIterator() OVERRIDE;
  30
  31  protected:
  32   PropertyMap properties_;
  33   base::FilePath path_;
  34
  35  private:
  36   DISALLOW_COPY_AND_ASSIGN(FileMetadataParser);
  37 };
  38
  39 class FileMetadataPropertyIterator : public MetadataPropertyIterator {
  40  public:
  41   explicit FileMetadataPropertyIterator(PropertyMap& properties);
  42
  43   virtual ~FileMetadataPropertyIterator();
  44
  45   // Implementation of MetadataPropertyIterator
  46   virtual bool GetNext(std::string* key, std::string* value) OVERRIDE;
  47   virtual int Length() OVERRIDE;
  48   virtual bool IsEnd() OVERRIDE;
  49
  50  private:
  51   PropertyMap& properties_;
  52   PropertyMap::iterator it;
  53
  54   DISALLOW_COPY_AND_ASSIGN(FileMetadataPropertyIterator);
  55 };
  56
  57 #endif  // CHROME_BROWSER_PARSERS_METADATA_PARSER_FILEBASE_H_