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Diffstat (limited to 'src/corelib/mimetypes/qmimeglobpattern_p.h')
-rw-r--r-- | src/corelib/mimetypes/qmimeglobpattern_p.h | 146 |
1 files changed, 146 insertions, 0 deletions
diff --git a/src/corelib/mimetypes/qmimeglobpattern_p.h b/src/corelib/mimetypes/qmimeglobpattern_p.h new file mode 100644 index 0000000000..b64a0e2f2b --- /dev/null +++ b/src/corelib/mimetypes/qmimeglobpattern_p.h @@ -0,0 +1,146 @@ +/**************************************************************************** +** +** Copyright (C) 2012 Nokia Corporation and/or its subsidiary(-ies). +** Contact: http://www.qt-project.org/ +** +** This file is part of the QtCore module of the Qt Toolkit. +** +** $QT_BEGIN_LICENSE:LGPL$ +** GNU Lesser General Public License Usage +** 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 1.1, 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. +** +** Other Usage +** Alternatively, this file may be used in accordance with the terms and +** conditions contained in a signed written agreement between you and Nokia. +** +** +** +** +** +** +** $QT_END_LICENSE$ +** +****************************************************************************/ + +#ifndef QMIMEGLOBPATTERN_P_H +#define QMIMEGLOBPATTERN_P_H + +#include <QtCore/qstringlist.h> +#include <QtCore/qhash.h> + +QT_BEGIN_NAMESPACE + +struct QMimeGlobMatchResult +{ + QMimeGlobMatchResult() + : m_weight(0), m_matchingPatternLength(0) + {} + + void addMatch(const QString &mimeType, int weight, const QString &pattern); + + QStringList m_matchingMimeTypes; + int m_weight; + int m_matchingPatternLength; + QString m_foundSuffix; +}; + +class QMimeGlobPattern +{ +public: + static const unsigned MaxWeight = 100; + static const unsigned DefaultWeight = 50; + static const unsigned MinWeight = 1; + + explicit QMimeGlobPattern(const QString &thePattern, const QString &theMimeType, unsigned theWeight = DefaultWeight, Qt::CaseSensitivity s = Qt::CaseInsensitive) : + m_pattern(thePattern), m_mimeType(theMimeType), m_weight(theWeight), m_caseSensitivity(s) + { + if (s == Qt::CaseInsensitive) { + m_pattern = m_pattern.toLower(); + } + } + ~QMimeGlobPattern() {} + + bool matchFileName(const QString &filename) const; + + inline const QString &pattern() const { return m_pattern; } + inline unsigned weight() const { return m_weight; } + inline const QString &mimeType() const { return m_mimeType; } + inline bool isCaseSensitive() const { return m_caseSensitivity == Qt::CaseSensitive; } + +private: + QString m_pattern; + QString m_mimeType; + int m_weight; + Qt::CaseSensitivity m_caseSensitivity; +}; + +class QMimeGlobPatternList : public QList<QMimeGlobPattern> +{ +public: + bool hasPattern(const QString &mimeType, const QString &pattern) const + { + const_iterator it = begin(); + const const_iterator myend = end(); + for (; it != myend; ++it) + if ((*it).pattern() == pattern && (*it).mimeType() == mimeType) + return true; + return false; + } + + /*! + "noglobs" is very rare occurrence, so it's ok if it's slow + */ + void removeMimeType(const QString &mimeType) + { + QMutableListIterator<QMimeGlobPattern> it(*this); + while (it.hasNext()) { + if (it.next().mimeType() == mimeType) + it.remove(); + } + } + + void match(QMimeGlobMatchResult &result, const QString &fileName) const; +}; + +/*! + Result of the globs parsing, as data structures ready for efficient MIME type matching. + This contains: + 1) a map of fast regular patterns (e.g. *.txt is stored as "txt" in a qhash's key) + 2) a linear list of high-weight globs + 3) a linear list of low-weight globs + */ +class QMimeAllGlobPatterns +{ +public: + typedef QHash<QString, QStringList> PatternsMap; // MIME type -> patterns + + void addGlob(const QMimeGlobPattern &glob); + void removeMimeType(const QString &mimeType); + QStringList matchingGlobs(const QString &fileName, QString *foundSuffix) const; + void clear(); + + PatternsMap m_fastPatterns; // example: "doc" -> "application/msword", "text/plain" + QMimeGlobPatternList m_highWeightGlobs; + QMimeGlobPatternList m_lowWeightGlobs; // <= 50, including the non-fast 50 patterns +}; + +QT_END_NAMESPACE + +#endif // QMIMEGLOBPATTERN_P_H |