| /**************************************************************************** |
| ** |
| ** Copyright (C) 2016 The Qt Company Ltd. |
| ** Copyright (C) 2015 Klaralvdalens Datakonsult AB, a KDAB Group company, info@kdab.com, author David Faure <david.faure@kdab.com> |
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| ****************************************************************************/ |
| |
| #ifndef QMIMEPROVIDER_P_H |
| #define QMIMEPROVIDER_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 "qmimedatabase_p.h" |
| |
| QT_REQUIRE_CONFIG(mimetype); |
| |
| #include "qmimeglobpattern_p.h" |
| #include <QtCore/qdatetime.h> |
| #include <QtCore/qset.h> |
| |
| QT_BEGIN_NAMESPACE |
| |
| class QMimeMagicRuleMatcher; |
| |
| class QMimeProviderBase |
| { |
| public: |
| QMimeProviderBase(QMimeDatabasePrivate *db, const QString &directory); |
| virtual ~QMimeProviderBase() {} |
| |
| virtual bool isValid() = 0; |
| virtual QMimeType mimeTypeForName(const QString &name) = 0; |
| virtual void addFileNameMatches(const QString &fileName, QMimeGlobMatchResult &result) = 0; |
| virtual void addParents(const QString &mime, QStringList &result) = 0; |
| virtual QString resolveAlias(const QString &name) = 0; |
| virtual void addAliases(const QString &name, QStringList &result) = 0; |
| virtual void findByMagic(const QByteArray &data, int *accuracyPtr, QMimeType &candidate) = 0; |
| virtual void addAllMimeTypes(QList<QMimeType> &result) = 0; |
| virtual void loadIcon(QMimeTypePrivate &) {} |
| virtual void loadGenericIcon(QMimeTypePrivate &) {} |
| virtual void ensureLoaded() {} |
| |
| QString directory() const { return m_directory; } |
| |
| QMimeDatabasePrivate *m_db; |
| QString m_directory; |
| }; |
| |
| /* |
| Parses the files 'mime.cache' and 'types' on demand |
| */ |
| class QMimeBinaryProvider : public QMimeProviderBase |
| { |
| public: |
| QMimeBinaryProvider(QMimeDatabasePrivate *db, const QString &directory); |
| virtual ~QMimeBinaryProvider(); |
| |
| bool isValid() override; |
| QMimeType mimeTypeForName(const QString &name) override; |
| void addFileNameMatches(const QString &fileName, QMimeGlobMatchResult &result) override; |
| void addParents(const QString &mime, QStringList &result) override; |
| QString resolveAlias(const QString &name) override; |
| void addAliases(const QString &name, QStringList &result) override; |
| void findByMagic(const QByteArray &data, int *accuracyPtr, QMimeType &candidate) override; |
| void addAllMimeTypes(QList<QMimeType> &result) override; |
| static void loadMimeTypePrivate(QMimeTypePrivate &); |
| void loadIcon(QMimeTypePrivate &) override; |
| void loadGenericIcon(QMimeTypePrivate &) override; |
| void ensureLoaded() override; |
| |
| private: |
| struct CacheFile; |
| |
| void matchGlobList(QMimeGlobMatchResult &result, CacheFile *cacheFile, int offset, const QString &fileName); |
| bool matchSuffixTree(QMimeGlobMatchResult &result, CacheFile *cacheFile, int numEntries, int firstOffset, const QString &fileName, int charPos, bool caseSensitiveCheck); |
| bool matchMagicRule(CacheFile *cacheFile, int numMatchlets, int firstOffset, const QByteArray &data); |
| QLatin1String iconForMime(CacheFile *cacheFile, int posListOffset, const QByteArray &inputMime); |
| void loadMimeTypeList(); |
| bool checkCacheChanged(); |
| |
| CacheFile *m_cacheFile = nullptr; |
| QStringList m_cacheFileNames; |
| QSet<QString> m_mimetypeNames; |
| bool m_mimetypeListLoaded; |
| }; |
| |
| /* |
| Parses the raw XML files (slower) |
| */ |
| class QMimeXMLProvider : public QMimeProviderBase |
| { |
| public: |
| QMimeXMLProvider(QMimeDatabasePrivate *db, const QString &directory); |
| ~QMimeXMLProvider(); |
| |
| bool isValid() override; |
| QMimeType mimeTypeForName(const QString &name) override; |
| void addFileNameMatches(const QString &fileName, QMimeGlobMatchResult &result) override; |
| void addParents(const QString &mime, QStringList &result) override; |
| QString resolveAlias(const QString &name) override; |
| void addAliases(const QString &name, QStringList &result) override; |
| void findByMagic(const QByteArray &data, int *accuracyPtr, QMimeType &candidate) override; |
| void addAllMimeTypes(QList<QMimeType> &result) override; |
| void ensureLoaded() override; |
| |
| bool load(const QString &fileName, QString *errorMessage); |
| |
| // Called by the mimetype xml parser |
| void addMimeType(const QMimeType &mt); |
| void addGlobPattern(const QMimeGlobPattern &glob); |
| void addParent(const QString &child, const QString &parent); |
| void addAlias(const QString &alias, const QString &name); |
| void addMagicMatcher(const QMimeMagicRuleMatcher &matcher); |
| |
| private: |
| void load(const QString &fileName); |
| |
| typedef QHash<QString, QMimeType> NameMimeTypeMap; |
| NameMimeTypeMap m_nameMimeTypeMap; |
| |
| typedef QHash<QString, QString> AliasHash; |
| AliasHash m_aliases; |
| |
| typedef QHash<QString, QStringList> ParentsHash; |
| ParentsHash m_parents; |
| QMimeAllGlobPatterns m_mimeTypeGlobs; |
| |
| QList<QMimeMagicRuleMatcher> m_magicMatchers; |
| QStringList m_allFiles; |
| }; |
| |
| QT_END_NAMESPACE |
| |
| #endif // QMIMEPROVIDER_P_H |