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
|
/*
Copyright (c) 2009 Volker Krause <vkrause@kde.org>
This library is free software; you can redistribute it and/or modify it
under the terms of the GNU Library General Public License as published by
the Free Software Foundation; either version 2 of the License, or (at your
option) any later version.
This library 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 Library General Public
License for more details.
You should have received a copy of the GNU Library General Public License
along with this library; see the file COPYING.LIB. If not, write to the
Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA
02110-1301, USA.
*/
#include "xmlwritejob.h"
#include "xmldocument.h"
#include "xmlwriter.h"
#include <akonadi/collection.h>
#include <akonadi/collectionfetchjob.h>
#include <akonadi/item.h>
#include <akonadi/itemfetchjob.h>
#include <akonadi/itemfetchscope.h>
#include <KDebug>
#include <QDomElement>
#include <QFile>
#include <QStack>
namespace Akonadi {
class XmlWriteJobPrivate {
public:
XmlWriteJobPrivate( XmlWriteJob* parent ) : q( parent ) {}
XmlWriteJob* const q;
Collection::List roots;
QStack<Collection::List> pendingSiblings;
QStack<QDomElement> elementStack;
QString fileName;
XmlDocument document;
void collectionFetchResult( KJob* job );
void processCollection();
void itemFetchResult( KJob* job );
void processItems();
};
void XmlWriteJobPrivate::collectionFetchResult(KJob* job)
{
if ( job->error() )
return;
CollectionFetchJob *fetch = dynamic_cast<CollectionFetchJob*>( job );
Q_ASSERT( fetch );
if ( fetch->collections().isEmpty() ) {
processItems();
} else {
pendingSiblings.push( fetch->collections() );
processCollection();
}
}
void XmlWriteJobPrivate::processCollection()
{
if ( !pendingSiblings.isEmpty() && pendingSiblings.top().isEmpty() ) {
pendingSiblings.pop();
if ( pendingSiblings.isEmpty() ) {
q->done();
return;
}
processItems();
return;
}
if ( pendingSiblings.isEmpty() ) {
q->done();
return;
}
const Collection current = pendingSiblings.top().first();
kDebug() << "Writing " << current.name() << "into" << elementStack.top().attribute( QLatin1String("name") );
elementStack.push( XmlWriter::writeCollection( current, elementStack.top() ) );
CollectionFetchJob *subfetch = new CollectionFetchJob( current, CollectionFetchJob::FirstLevel, q );
q->connect( subfetch, SIGNAL(result(KJob*)), q, SLOT(collectionFetchResult(KJob*)) );
}
void XmlWriteJobPrivate::processItems()
{
const Collection collection = pendingSiblings.top().first();
ItemFetchJob *fetch = new ItemFetchJob( collection, q );
fetch->fetchScope().fetchAllAttributes();
fetch->fetchScope().fetchFullPayload();
q->connect( fetch, SIGNAL(result(KJob*)), q, SLOT(itemFetchResult(KJob*)) );
}
void XmlWriteJobPrivate::itemFetchResult(KJob* job)
{
if ( job->error() )
return;
ItemFetchJob *fetch = dynamic_cast<ItemFetchJob*>( job );
Q_ASSERT( fetch );
foreach ( const Item &item, fetch->items() )
XmlWriter::writeItem( item, elementStack.top() );
pendingSiblings.top().removeFirst();
elementStack.pop();
processCollection();
}
XmlWriteJob::XmlWriteJob(const Collection& root, const QString& fileName, QObject* parent) :
Job( parent ),
d( new XmlWriteJobPrivate( this ) )
{
d->roots.append( root );
d->fileName = fileName;
}
XmlWriteJob::XmlWriteJob(const Collection::List& roots, const QString& fileName, QObject* parent) :
Job( parent ),
d( new XmlWriteJobPrivate( this ) )
{
d->roots = roots;
d->fileName = fileName;
}
XmlWriteJob::~XmlWriteJob()
{
delete d;
}
void XmlWriteJob::doStart()
{
d->elementStack.push( d->document.document().documentElement() );
CollectionFetchJob *job = new CollectionFetchJob( d->roots, this );
connect( job, SIGNAL(result(KJob*)), SLOT(collectionFetchResult(KJob*)) );
}
void XmlWriteJob::done() // cannot be in the private class due to emitResult()
{
if ( !d->document.writeToFile( d->fileName ) ) {
setError( Unknown );
setErrorText( d->document.lastError() );
}
emitResult();
}
}
#include "xmlwritejob.moc"
|