KService

kservicegroupfactory.cpp
1/*
2 This file is part of the KDE libraries
3 SPDX-FileCopyrightText: 2000 Waldo Bastian <bastian@kde.org>
4
5 SPDX-License-Identifier: LGPL-2.0-or-later
6*/
7
8#include "kservice.h"
9#include "kservicegroupfactory_p.h"
10#include "ksycoca.h"
11#include "ksycocadict_p.h"
12#include "ksycocatype.h"
13
14#include "servicesdebug.h"
15
16#include <QIODevice>
17
18KServiceGroupFactory::KServiceGroupFactory(KSycoca *db)
19 : KSycocaFactory(KST_KServiceGroupFactory, db)
20 , m_baseGroupDict(nullptr)
21 , m_baseGroupDictOffset(0)
22{
23 if (!sycoca()->isBuilding()) {
24 QDataStream *str = stream();
25 if (!str) {
26 return;
27 }
28 // Read Header
29 qint32 i;
30 (*str) >> i;
31 m_baseGroupDictOffset = i;
32
33 const qint64 saveOffset = str->device()->pos();
34 // Init index tables
35 m_baseGroupDict = new KSycocaDict(str, m_baseGroupDictOffset);
36 str->device()->seek(saveOffset);
37 }
38}
39
40KServiceGroupFactory::~KServiceGroupFactory()
41{
42 delete m_baseGroupDict;
43}
44
45KServiceGroup::Ptr KServiceGroupFactory::findGroupByDesktopPath(const QString &_name, bool deep)
46{
47 if (!sycocaDict()) {
48 return KServiceGroup::Ptr(); // Error!
49 }
50 int offset = sycocaDict()->find_string(_name);
51 if (!offset) {
52 return KServiceGroup::Ptr(); // Not found
53 }
54
55 KServiceGroup::Ptr newGroup(createGroup(offset, deep));
56
57 // Check whether the dictionary was right.
58 if (newGroup && (newGroup->relPath() != _name)) {
59 // No it wasn't...
60 newGroup = nullptr; // Not found
61 }
62 return newGroup;
63}
64
65KServiceGroup::Ptr KServiceGroupFactory::findBaseGroup(const QString &_baseGroupName, bool deep)
66{
67 if (!m_baseGroupDict) {
68 return KServiceGroup::Ptr(); // Error!
69 }
70
71 // Warning : this assumes we're NOT building a database
72 // But since findBaseGroup isn't called in that case...
73 // [ see KServiceTypeFactory for how to do it if needed ]
74
75 int offset = m_baseGroupDict->find_string(_baseGroupName);
76 if (!offset) {
77 return KServiceGroup::Ptr(); // Not found
78 }
79
80 KServiceGroup::Ptr newGroup(createGroup(offset, deep));
81
82 // Check whether the dictionary was right.
83 if (newGroup && (newGroup->baseGroupName() != _baseGroupName)) {
84 // No it wasn't...
85 newGroup = nullptr; // Not found
86 }
87 return newGroup;
88}
89
90KServiceGroup *KServiceGroupFactory::createGroup(int offset, bool deep) const
91{
92 KSycocaType type;
93 QDataStream *str = sycoca()->findEntry(offset, type);
94 if (type != KST_KServiceGroup) {
95 qCWarning(SERVICES) << "KServiceGroupFactory: unexpected object entry in KSycoca database (type = " << int(type) << ")";
96 return nullptr;
97 }
98
99 KServiceGroup *newEntry = new KServiceGroup(*str, offset, deep);
100 if (!newEntry->isValid()) {
101 qCWarning(SERVICES) << "KServiceGroupFactory: corrupt object in KSycoca database!";
102 delete newEntry;
103 newEntry = nullptr;
104 }
105 return newEntry;
106}
107
108KServiceGroup *KServiceGroupFactory::createEntry(int offset) const
109{
110 return createGroup(offset, true);
111}
112
113void KServiceGroupFactory::virtual_hook(int id, void *data)
114{
115 KSycocaFactory::virtual_hook(id, data);
116}
KServiceGroup represents a group of service, for example screensavers.
QExplicitlySharedDataPointer< KServiceGroup > Ptr
A shared data pointer for KServiceGroup.
bool isValid() const
VehicleSection::Type type(QStringView coachNumber, QStringView coachClassification)
QIODevice * device() const const
virtual qint64 pos() const const
virtual bool seek(qint64 pos)
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