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// 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>
// SPDX-License-Identifier: LicenseRef-Qt-Commercial OR LGPL-3.0-only OR GPL-2.0-only OR GPL-3.0-only
#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>
#include <map>
QT_BEGIN_NAMESPACE
class QMimeMagicRuleMatcher;
class QMimeTypeXMLData;
class QMimeProviderBase;
struct QMimeMagicResult
{
bool isValid() const { return !candidate.isEmpty(); }
QString candidate;
int accuracy = 0;
};
class QMimeProviderBase
{
Q_DISABLE_COPY(QMimeProviderBase)
public:
QMimeProviderBase(QMimeDatabasePrivate *db, const QString &directory);
virtual ~QMimeProviderBase() {}
virtual bool isValid() = 0;
virtual bool isInternalDatabase() const = 0;
virtual bool knowsMimeType(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, QMimeMagicResult &result) = 0;
virtual void addAllMimeTypes(QList<QMimeType> &result) = 0;
virtual QMimeTypePrivate::LocaleHash localeComments(const QString &name) = 0;
virtual bool hasGlobDeleteAll(const QString &name) = 0;
virtual QStringList globPatterns(const QString &name) = 0;
virtual QString icon(const QString &name) = 0;
virtual QString genericIcon(const QString &name) = 0;
virtual void ensureLoaded() { }
QString directory() const { return m_directory; }
QMimeProviderBase *overrideProvider() const;
void setOverrideProvider(QMimeProviderBase *provider);
bool isMimeTypeGlobsExcluded(const QString &name) const;
QMimeDatabasePrivate *m_db;
QString m_directory;
QMimeProviderBase *m_overrideProvider = nullptr; // more "local" than this one
};
/*
Parses the files 'mime.cache' and 'types' on demand
*/
class QMimeBinaryProvider final : public QMimeProviderBase
{
public:
QMimeBinaryProvider(QMimeDatabasePrivate *db, const QString &directory);
virtual ~QMimeBinaryProvider();
bool isValid() override;
bool isInternalDatabase() const override;
bool knowsMimeType(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, QMimeMagicResult &result) override;
void addAllMimeTypes(QList<QMimeType> &result) override;
QMimeTypePrivate::LocaleHash localeComments(const QString &name) override;
bool hasGlobDeleteAll(const QString &name) override;
QStringList globPatterns(const QString &name) override;
QString icon(const QString &name) override;
QString genericIcon(const QString &name) override;
void ensureLoaded() override;
private:
struct CacheFile;
int matchGlobList(QMimeGlobMatchResult &result, CacheFile *cacheFile, int offset,
const QString &fileName);
bool matchSuffixTree(QMimeGlobMatchResult &result, CacheFile *cacheFile, int numEntries,
int firstOffset, const QString &fileName, qsizetype charPos,
bool caseSensitiveCheck);
bool matchMagicRule(CacheFile *cacheFile, int numMatchlets, int firstOffset,
const QByteArray &data);
QLatin1StringView iconForMime(CacheFile *cacheFile, int posListOffset, const QByteArray &inputMime);
void loadMimeTypeList();
bool checkCacheChanged();
std::unique_ptr<CacheFile> m_cacheFile;
QStringList m_cacheFileNames;
QSet<QString> m_mimetypeNames;
bool m_mimetypeListLoaded;
struct MimeTypeExtra
{
QHash<QString, QString> localeComments;
QStringList globPatterns;
bool hasGlobDeleteAll = false;
};
using MimeTypeExtraMap = std::map<QString, MimeTypeExtra>;
MimeTypeExtraMap m_mimetypeExtra;
MimeTypeExtraMap::const_iterator loadMimeTypeExtra(const QString &mimeName);
};
/*
Parses the raw XML files (slower)
*/
class QMimeXMLProvider final : public QMimeProviderBase
{
public:
enum InternalDatabaseEnum { InternalDatabase };
#if QT_CONFIG(mimetype_database)
enum : bool { InternalDatabaseAvailable = true };
#else
enum : bool { InternalDatabaseAvailable = false };
#endif
QMimeXMLProvider(QMimeDatabasePrivate *db, InternalDatabaseEnum);
QMimeXMLProvider(QMimeDatabasePrivate *db, const QString &directory);
~QMimeXMLProvider();
bool isValid() override;
bool isInternalDatabase() const override;
bool knowsMimeType(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, QMimeMagicResult &result) override;
void addAllMimeTypes(QList<QMimeType> &result) override;
void ensureLoaded() override;
QMimeTypePrivate::LocaleHash localeComments(const QString &name) override;
bool hasGlobDeleteAll(const QString &name) override;
QStringList globPatterns(const QString &name) override;
QString icon(const QString &name) override;
QString genericIcon(const QString &name) override;
bool load(const QString &fileName, QString *errorMessage);
// Called by the mimetype xml parser
void addMimeType(const QMimeTypeXMLData &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);
void load(const char *data, qsizetype len);
typedef QHash<QString, QMimeTypeXMLData> 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
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