summaryrefslogtreecommitdiffstats
path: root/src/corelib/io/qsettings_p.h
blob: 88115446e9c6be86cf39bcf35ef0f2014dda9718 (plain)
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
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
313
314
315
/****************************************************************************
**
** Copyright (C) 2009 Nokia Corporation and/or its subsidiary(-ies).
** Contact: Nokia Corporation (qt-info@nokia.com)
**
** This file is part of the QtCore module of the Qt Toolkit.
**
** $QT_BEGIN_LICENSE:LGPL$
** No Commercial Usage
** This file contains pre-release code and may not be distributed.
** You may use this file in accordance with the terms and conditions
** contained in the either Technology Preview License Agreement or the
** Beta Release License Agreement.
**
** GNU Lesser General Public License Usage
** Alternatively, this file may be used under the terms of the GNU Lesser
** General Public License version 2.1 as published by the Free Software
** Foundation and appearing in the file LICENSE.LGPL included in the
** packaging of this file.  Please review the following information to
** ensure the GNU Lesser General Public License version 2.1 requirements
** will be met: http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html.
**
** In addition, as a special exception, Nokia gives you certain
** additional rights. These rights are described in the Nokia Qt LGPL
** Exception version 1.0, included in the file LGPL_EXCEPTION.txt in this
** package.
**
** GNU General Public License Usage
** Alternatively, this file may be used under the terms of the GNU
** General Public License version 3.0 as published by the Free Software
** Foundation and appearing in the file LICENSE.GPL included in the
** packaging of this file.  Please review the following information to
** ensure the GNU General Public License version 3.0 requirements will be
** met: http://www.gnu.org/copyleft/gpl.html.
**
** If you are unsure which license is appropriate for your use, please
** contact the sales department at http://qt.nokia.com/contact.
** $QT_END_LICENSE$
**
****************************************************************************/

#ifndef QSETTINGS_P_H
#define QSETTINGS_P_H

//
//  W A R N I N G
//  -------------
//
// This file is not part of the Qt API.  It exists purely as an
// implementation detail.  This header file may change from version to
// version without notice, or even be removed.
//
// We mean it.
//

#include "QtCore/qdatetime.h"
#include "QtCore/qmap.h"
#include "QtCore/qmutex.h"
#include "QtCore/qiodevice.h"
#include "QtCore/qstack.h"
#include "QtCore/qstringlist.h"
#ifndef QT_NO_QOBJECT
#include "private/qobject_p.h"
#endif

#ifdef Q_OS_WIN
#include "QtCore/qt_windows.h"
#endif

QT_BEGIN_NAMESPACE

#if defined(Q_WS_QWS)
#define QT_QSETTINGS_ALWAYS_CASE_SENSITIVE_AND_FORGET_ORIGINAL_KEY_ORDER
#endif

// used in testing framework
#define QSETTINGS_P_H_VERSION 3

#ifdef QT_QSETTINGS_ALWAYS_CASE_SENSITIVE_AND_FORGET_ORIGINAL_KEY_ORDER
static const Qt::CaseSensitivity IniCaseSensitivity = Qt::CaseSensitive;

class QSettingsKey : public QString
{
public:
    inline QSettingsKey(const QString &key, Qt::CaseSensitivity cs, int /* position */ = -1)
        : QString(key) { Q_ASSERT(cs == Qt::CaseSensitive); Q_UNUSED(cs); }

    inline QString originalCaseKey() const { return *this; }
    inline int originalKeyPosition() const { return -1; }
};
#else
static const Qt::CaseSensitivity IniCaseSensitivity = Qt::CaseInsensitive;

class QSettingsKey : public QString
{
public:
    inline QSettingsKey(const QString &key, Qt::CaseSensitivity cs, int position = -1)
         : QString(key), theOriginalKey(key), theOriginalKeyPosition(position)
    {
        if (cs == Qt::CaseInsensitive)
            QString::operator=(toLower());
    }

    inline QString originalCaseKey() const { return theOriginalKey; }
    inline int originalKeyPosition() const { return theOriginalKeyPosition; }

private:
    QString theOriginalKey;
    int theOriginalKeyPosition;
};
#endif

typedef QMap<QSettingsKey, QByteArray> UnparsedSettingsMap;
typedef QMap<QSettingsKey, QVariant> ParsedSettingsMap;

class QSettingsGroup
{
public:
    inline QSettingsGroup()
        : num(-1), maxNum(-1) {}
    inline QSettingsGroup(const QString &s)
        : str(s), num(-1), maxNum(-1) {}
    inline QSettingsGroup(const QString &s, bool guessArraySize)
        : str(s), num(0), maxNum(guessArraySize ? 0 : -1) {}

    inline QString name() const { return str; }
    inline QString toString() const;
    inline bool isArray() const { return num != -1; }
    inline int arraySizeGuess() const { return maxNum; }
    inline void setArrayIndex(int i)
    { num = i + 1; if (maxNum != -1 && num > maxNum) maxNum = num; }

    QString str;
    int num;
    int maxNum;
};

inline QString QSettingsGroup::toString() const
{
    QString result;
    result = str;
    if (num > 0) {
        result += QLatin1Char('/');
        result += QString::number(num);
    }
    return result;
}

class Q_AUTOTEST_EXPORT QConfFile
{
public:
    ~QConfFile();

    ParsedSettingsMap mergedKeyMap() const;
    bool isWritable() const;

    static QConfFile *fromName(const QString &name, bool _userPerms);
    static void clearCache();

    QString name;
    QDateTime timeStamp;
    qint64 size;
    UnparsedSettingsMap unparsedIniSections;
    ParsedSettingsMap originalKeys;
    ParsedSettingsMap addedKeys;
    ParsedSettingsMap removedKeys;
    QAtomicInt ref;
    QMutex mutex;
    bool userPerms;

private:
#ifdef Q_DISABLE_COPY
    QConfFile(const QConfFile &);
    QConfFile &operator=(const QConfFile &);
#endif
    QConfFile(const QString &name, bool _userPerms);

    friend class QConfFile_createsItself; // silences compiler warning
};

class Q_AUTOTEST_EXPORT QSettingsPrivate
#ifndef QT_NO_QOBJECT
    : public QObjectPrivate
#endif
{
#ifdef QT_NO_QOBJECT
    QSettings *q_ptr;
#endif
    Q_DECLARE_PUBLIC(QSettings)

public:
    QSettingsPrivate(QSettings::Format format);
    QSettingsPrivate(QSettings::Format format, QSettings::Scope scope,
                     const QString &organization, const QString &application);
    virtual ~QSettingsPrivate();

    virtual void remove(const QString &key) = 0;
    virtual void set(const QString &key, const QVariant &value) = 0;
    virtual bool get(const QString &key, QVariant *value) const = 0;

    enum ChildSpec { AllKeys, ChildKeys, ChildGroups };
    virtual QStringList children(const QString &prefix, ChildSpec spec) const = 0;

    virtual void clear() = 0;
    virtual void sync() = 0;
    virtual void flush() = 0;
    virtual bool isWritable() const = 0;
    virtual QString fileName() const = 0;

    QString actualKey(const QString &key) const;
    void beginGroupOrArray(const QSettingsGroup &group);
    void setStatus(QSettings::Status status) const;
    void requestUpdate();
    void update();

    static QString normalizedKey(const QString &key);
    static QSettingsPrivate *create(QSettings::Format format, QSettings::Scope scope,
                                        const QString &organization, const QString &application);
    static QSettingsPrivate *create(const QString &fileName, QSettings::Format format);

    static void processChild(QString key, ChildSpec spec, QMap<QString, QString> &result);

    // Variant streaming functions
    static QStringList variantListToStringList(const QVariantList &l);
    static QVariant stringListToVariantList(const QStringList &l);

    // parser functions
    static QString variantToString(const QVariant &v);
    static QVariant stringToVariant(const QString &s);
    static void iniEscapedKey(const QString &key, QByteArray &result);
    static bool iniUnescapedKey(const QByteArray &key, int from, int to, QString &result);
    static void iniEscapedString(const QString &str, QByteArray &result, QTextCodec *codec);
    static void iniEscapedStringList(const QStringList &strs, QByteArray &result, QTextCodec *codec);
    static bool iniUnescapedStringList(const QByteArray &str, int from, int to,
                                       QString &stringResult, QStringList &stringListResult,
                                       QTextCodec *codec);
    static QStringList splitArgs(const QString &s, int idx);

    /*
    The numeric values of these enums define their search order. For example,
    F_User | F_Organization is searched before F_System | F_Application,
    because their values are respectively 1 and 2.
    */
    enum {
       F_Application = 0x0,
       F_Organization = 0x1,
       F_User = 0x0,
       F_System = 0x2,
       NumConfFiles = 4
    };

    QSettings::Format format;
    QSettings::Scope scope;
    QString organizationName;
    QString applicationName;
    QTextCodec *iniCodec;

protected:
    QStack<QSettingsGroup> groupStack;
    QString groupPrefix;
    int spec;
    bool fallbacks;
    bool pendingChanges;
    mutable QSettings::Status status;
};

class QConfFileSettingsPrivate : public QSettingsPrivate
{
public:
    QConfFileSettingsPrivate(QSettings::Format format, QSettings::Scope scope,
                             const QString &organization, const QString &application);
    QConfFileSettingsPrivate(const QString &fileName, QSettings::Format format);
    ~QConfFileSettingsPrivate();

    void remove(const QString &key);
    void set(const QString &key, const QVariant &value);
    bool get(const QString &key, QVariant *value) const;

    QStringList children(const QString &prefix, ChildSpec spec) const;

    void clear();
    void sync();
    void flush();
    bool isWritable() const;
    QString fileName() const;

    static bool readIniFile(const QByteArray &data, UnparsedSettingsMap *unparsedIniSections);
    static bool readIniSection(const QSettingsKey &section, const QByteArray &data,
                               ParsedSettingsMap *settingsMap, QTextCodec *codec);
    static bool readIniLine(const QByteArray &data, int &dataPos, int &lineStart, int &lineLen,
                            int &equalsPos);

private:
    void initFormat();
    void initAccess();
    void syncConfFile(int confFileNo);
    bool writeIniFile(QIODevice &device, const ParsedSettingsMap &map);
#ifdef Q_OS_MAC
    bool readPlistFile(const QString &fileName, ParsedSettingsMap *map) const;
    bool writePlistFile(const QString &fileName, const ParsedSettingsMap &map) const;
#endif
    void ensureAllSectionsParsed(QConfFile *confFile) const;
    void ensureSectionParsed(QConfFile *confFile, const QSettingsKey &key) const;

    QScopedSharedPointer<QConfFile> confFiles[NumConfFiles];
    QSettings::ReadFunc readFunc;
    QSettings::WriteFunc writeFunc;
    QString extension;
    Qt::CaseSensitivity caseSensitivity;
    int nextPosition;
};

QT_END_NAMESPACE

#endif // QSETTINGS_P_H