1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
|
/******************************************************************************
*
* Copyright (C) 2002 Hugo PEREIRA <mailto: hugo.pereira@free.fr>
*
* This is free software; you can redistribute it and/or modify it under the
* terms of the GNU General Public License as published by the Free Software
* Foundation; either version 2 of the License, or (at your option) any later
* version.
*
* This software is distributed in the hope that it will be useful, but WITHOUT
* Any WARRANTY; without even the implied warranty of MERCHANTABILITY or
* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
* for more details.
*
* You should have received a copy of the GNU General Public License along with
* this program. If not, see <http://www.gnu.org/licenses/>.
*
*******************************************************************************/
#include "XmlFileList.h"
#include "CppUtil.h"
#include "Debug.h"
#include "XmlDocument.h"
#include "XmlFileRecord.h"
#include <QApplication>
#include <QFile>
//_______________________________________________
XmlFileList::XmlFileList( QObject* parent ):
FileList( parent ),
tagName_( Base::Xml::FileList )
{
Debug::Throw( "XmlFileList::XmlFileList.\n" );
connect( qApp, SIGNAL(aboutToQuit()), SLOT(write()) );
}
//_______________________________________________
void XmlFileList::setTagName( const QString& value )
{
// do nothing if tagName is unchanged
if( value == tagName_ ) return;
// update tag name and read
tagName_ = value;
clear();
read();
}
//_______________________________________________
bool XmlFileList::setDBFile( const File& file )
{
Debug::Throw() << "XmlFileList::_setDBFile - file: " << file << endl;
// check file
if( dbFile_ == file && !_records().isEmpty() ) return false;
// store file and read
dbFile_ = file;
// make sure file is hidden (windows only)
if( dbFile_.localName().startsWith( '.' ) )
{ dbFile_.setHidden(); }
read();
return true;
}
//_______________________________________________
bool XmlFileList::read( File file )
{
Debug::Throw( "XmlFileList::read.\n" );
if( file.isEmpty() ) file = dbFile_;
if( file.isEmpty() || !file.exists() ) return false;
// parse the file
XmlDocument document;
QFile qfile( file );
if ( !document.setContent( &qfile ) )
{
Debug::Throw() << document.error() << endl;
return false;
} else if( _read( document ) ) {
emit contentsChanged();
return true;
} else return false;
}
//_______________________________________________
bool XmlFileList::_read( const XmlDocument& document )
{
// look for relevant element
QDomNodeList topNodes = document.elementsByTagName( tagName_ );
if( topNodes.isEmpty() ) return false;
for(QDomNode node = topNodes.at(0).firstChild(); !node.isNull(); node = node.nextSibling() )
{
QDomElement element = node.toElement();
if( element.isNull() ) continue;
// special options
if( element.tagName() == Base::Xml::Record )
{
XmlFileRecord record( element );
if( !record.file().isEmpty() ) _add( record, true, false );
}
}
return true;
}
//_______________________________________________
bool XmlFileList::write( File file )
{
Debug::Throw( "XmlFileList::write.\n" );
if( file.isEmpty() ) file = dbFile_;
if( file.isEmpty() ) return false;
// create document and read
XmlDocument document;
{
QFile qtfile( file );
document.setContent( &qtfile );
}
// get records truncated list
FileRecord::List records( _truncatedList( _records() ) );
// read old list and compare to current
XmlFileList oldList;
if( oldList._read( document ) && !_differs( oldList._records(), records ) )
{ return true; }
// create main element and insert records
QDomElement top = document.createElement( tagName_ );
for( const auto& record:records )
{
if( !record.file().isEmpty() )
{ top.appendChild( XmlFileRecord( record ).domElement( document.get() ) ); }
}
// append top node to document and write
document.replaceChild( top );
{
QFile qfile( file );
if( !qfile.open( QIODevice::WriteOnly ) ) return false;
qfile.write( document.toByteArray() );
}
return true;
}
//______________________________________
bool XmlFileList::_differs( const FileRecord::List& first, const FileRecord::List& second ) const
{
// check sizes
if( first.size() != second.size() ) return true;
// check records one by one
for( int i = 0; i < first.size(); ++i )
{
// records
const FileRecord& firstRecord = first[i];
const FileRecord& secondRecord = second[i];
if( !( firstRecord == secondRecord ) ) return true;
else if( firstRecord.time() != secondRecord.time() ) return true;
else if( firstRecord.flags() != secondRecord.flags() ) return true;
else if( !( firstRecord.properties() == secondRecord.properties() ) ) return true;
}
return false;
}
|
