root/trunk/libffado/src/libutil/serialize.h

Revision 751, 3.9 kB (checked in by ppalmers, 15 years ago)

implement cache versioning

Line 
1 /*
2  * Copyright (C) 2005-2007 by Daniel Wagner
3  *
4  * This file is part of FFADO
5  * FFADO = Free Firewire (pro-)audio drivers for linux
6  *
7  * FFADO is based upon FreeBoB.
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 3 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.  See the
17  * GNU General Public License for more details.
18  *
19  * You should have received a copy of the GNU General Public License
20  * along with this program.  If not, see <http://www.gnu.org/licenses/>.
21  *
22  */
23
24 #ifndef bebob_serialize_h
25 #define bebob_serialize_h
26
27 #include "debugmodule/debugmodule.h"
28
29 #include <libxml++/libxml++.h>
30
31 #include <iostream>
32
33 namespace Util {
34
35      class IOSerialize {
36      public:
37          IOSerialize() {}
38          virtual ~IOSerialize() {}
39
40          virtual bool write( std::string strMemberName,
41                              long long value ) = 0;
42          virtual bool write( std::string strMemberName,
43                              Glib::ustring str) = 0;
44
45          template <typename T>  bool write( std::string strMemberName, T value );
46      };
47
48     class IODeserialize {
49     public:
50         IODeserialize() {}
51         virtual ~IODeserialize() {}
52
53         virtual bool read( std::string strMemberName,
54                            long long& value ) = 0;
55         virtual bool read( std::string strMemberName,
56                            Glib::ustring& str ) = 0;
57
58         template <typename T> bool read( std::string strMemberName, T& value );
59
60         virtual bool isExisting( std::string strMemberName ) = 0;
61     };
62
63     class XMLSerialize: public IOSerialize {
64     public:
65         XMLSerialize( Glib::ustring fileName );
66         XMLSerialize( Glib::ustring fileName, int verboseLevel );
67         virtual ~XMLSerialize();
68
69         virtual bool write( std::string strMemberName,
70                             long long value );
71         virtual bool write( std::string strMemberName,
72                             Glib::ustring str);
73     private:
74         void writeVersion();
75
76         Glib::ustring    m_filepath;
77         xmlpp::Document  m_doc;
78         int              m_verboseLevel;
79
80         DECLARE_DEBUG_MODULE;
81
82         xmlpp::Node* getNodePath( xmlpp::Node* pRootNode,
83                                   std::vector<std::string>& tokens );
84     };
85
86     class XMLDeserialize: public IODeserialize {
87     public:
88         XMLDeserialize( Glib::ustring fileName );
89         XMLDeserialize( Glib::ustring fileName, int verboseLevel );
90         virtual ~XMLDeserialize();
91
92         virtual bool read( std::string strMemberName,
93                            long long& value );
94         virtual bool read( std::string strMemberName,
95                            Glib::ustring& str );
96
97         virtual bool isExisting( std::string strMemberName );
98         bool isValid();
99         bool checkVersion();
100     private:
101         Glib::ustring    m_filepath;
102         xmlpp::DomParser m_parser;
103         int              m_verboseLevel;
104
105         DECLARE_DEBUG_MODULE;
106     };
107
108
109 //////////////////////////////////////////
110
111     template <typename T> bool IOSerialize::write( std::string strMemberName,
112                                                    T value )
113     {
114         return write( strMemberName, static_cast<long long>( value ) );
115     }
116
117     template <typename T> bool IODeserialize::read( std::string strMemberName,
118                                                     T& value )
119     {
120         long long tmp;
121         bool result = read( strMemberName, tmp );
122         value = static_cast<T>( tmp );
123         return result;
124     }
125 }
126
127 void tokenize(const std::string& str, std::vector<std::string>& tokens, const std::string& delimiters = " ");
128
129 #endif
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