desktop/src/xmlcompactor.h

   1 ///
   2 /// \file       xmlcompactor.h
   3 ///             Compact an XML file into a map of pretty xpaths and content
   4 ///
   5
   6 /*
   7     Copyright (C) 2010-2012, Chris Frey <cdfrey@foursquare.net>
   8
   9     This program is free software; you can redistribute it and/or modify
  10     it under the terms of the GNU General Public License as published by
  11     the Free Software Foundation; either version 2 of the License, or
  12     (at your option) any later version.
  13
  14     This program is distributed in the hope that it will be useful,
  15     but WITHOUT ANY WARRANTY; without even the implied warranty of
  16     MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
  17
  18     See the GNU General Public License in the COPYING file at the
  19     root directory of this project for more details.
  20 */
  21
  22 #ifndef __XMLCOMPACTOR_H__
  23 #define __XMLCOMPACTOR_H__
  24
  25 #include <libxml++/libxml++.h>
  26 #include <map>
  27 #include <iosfwd>
  28
  29 class XmlCompactor
  30         : public std::map<Glib::ustring, Glib::ustring>
  31         , public xmlpp::DomParser
  32 {
  33 public:
  34         typedef Glib::ustring                           string_type;
  35         typedef std::map<string_type, string_type>      base_map_type;
  36         typedef xmlpp::DomParser                        base_xml_type;
  37         typedef base_map_type::iterator                 iterator;
  38         typedef base_map_type::const_iterator           const_iterator;
  39         typedef bool (XmlCompactor::*content_handler)(xmlpp::ContentNode*);
  40         typedef std::vector<Glib::ustring>              content_set;
  41
  42 private:
  43         Glib::ustring m_skip_prefix;
  44         Glib::ustring m_common_prefix;
  45
  46 protected:
  47         Glib::ustring HackPath(const Glib::ustring &path);
  48         bool WalkNodes(xmlpp::Node *node, content_handler handler);
  49         bool DoMap(xmlpp::ContentNode *content);
  50         bool ComparePrefix(xmlpp::ContentNode *content);
  51
  52 public:
  53         XmlCompactor();
  54
  55         /// returns the common prefix of all entries, suitable for
  56         /// use as an argument to Map()
  57         Glib::ustring FindCommonPrefix();
  58
  59         void Map(const Glib::ustring &skip);
  60         Glib::ustring Value(const Glib::ustring &key);
  61
  62         //
  63         // XML-based helpers
  64         //
  65
  66         content_set Find(const Glib::ustring &xpath) const;
  67
  68         void Dump(std::ostream &os) const;
  69 };
  70
  71 std::ostream& operator<<(std::ostream &os, XmlCompactor &parser);
  72
  73 #endif
  74