/* SPDX-FileCopyrightText: 2007-2011 Aaron Seigo SPDX-License-Identifier: LGPL-2.0-or-later */ #ifndef KPACKAGE_PACKAGE_H #define KPACKAGE_PACKAGE_H #include #include #include #include #include #include #include /*! * \namespace KPackage * \inmodule KPackage */ namespace KPackage { // TODO: write documentation on USING a package class PackagePrivate; class PackageStructure; /*! * \class KPackage::Package * \inheaderfile KPackage/Package * \inmodule KPackage * * \brief Object representing an installed package. * * Package defines what is in a package and provides easy access to the contents. * * To define a package, one might write the following code: * * \code * Package package; * * package.addDirectoryDefinition("images", "pics/"); * package.setMimeTypes("images", QStringList{"image/svg", "image/png", "image/jpeg"}); * * package.addDirectoryDefinition("scripts", "code/"); * package.setMimeTypes("scripts", QStringList{"text/\*"}); * * package.addFileDefinition("mainscript", "code/main.js"); * package.setRequired("mainscript", true); * \endcode * * One may also choose to create a subclass of PackageStructure and include the setup * in the constructor. * * Either way, Package creates a self-documenting contract between the packager and * the application without exposing package internals such as actual on-disk structure * of the package or requiring that all contents be explicitly known ahead of time. * * Subclassing PackageStructure does have provide a number of potential const benefits: * \list * \li the package can be notified of path changes via the virtual pathChanged() method * \li the subclass may implement mechanisms to install and remove packages using the virtual install and uninstall methods * \li subclasses can be compiled as plugins for easy re-use * \endlist **/ class KPACKAGE_EXPORT Package { public: /*! * Default constructor * * \a structure if a null pointer is passed in, this will creates an empty (invalid) Package; * otherwise the structure is allowed to set up the Package's initial layout */ explicit Package(PackageStructure *structure = nullptr); Package(const Package &other); virtual ~Package(); Package &operator=(const Package &rhs); /*! * Returns \c true if this package has a valid PackageStructure associated with it. * * A package may not be valid, but have a valid structure. Useful when dealing with * Package objects in a semi-initialized state (e.g. before calling setPath()) * \since 5.1 */ bool hasValidStructure() const; /*! * Return \c true if all the required components exist **/ bool isValid() const; /*! * Sets the path to the root of this package * * \a path an absolute path, or a relative path to the default package root */ void setPath(const QString &path); /*! * Returns the path to the root of this particular package */ const QString path() const; /*! * Get the path to a given file based on the key and an optional filename. * Example: finding the main script in a scripting package: * filePath("mainscript") * * Example: finding a specific image in the images directory: * filePath("images", "myimage.png") * * \a key the key of the file type to look for, * * \a filename optional name of the file to locate within the package * * Returns path to the file on disk. QString() if not found. **/ QString filePath(const QByteArray &key, const QString &filename = QString()) const; /*! * Get the url to a given file based on the key and an optional filename, is the file:// or qrc:// format * Example: finding the main script in a scripting package: * filePath("mainscript") * * Example: finding a specific image in the images directory: * filePath("images", "myimage.png") * * \a key the key of the file type to look for, * * \a filename optional name of the file to locate within the package * * Returns path to the file on disk. QUrl() if not found. * \since 5.41 **/ QUrl fileUrl(const QByteArray &key, const QString &filename = QString()) const; /*! * Get the list of files of a given type. * * \a fileType the type of file to look for, as defined in the * package structure. * Returns list of files by name, suitable for passing to filePath **/ QStringList entryList(const QByteArray &key) const; /*! * Returns true if the item at path exists and is required **/ bool isRequired(const QByteArray &key) const; /*! * Returns the mimeTypes associated with the path, if any **/ QStringList mimeTypes(const QByteArray &key) const; /*! * Returns the prefix paths inserted between the base path and content entries, in order of priority. * When searching for a file, all paths will be tried in order. */ QStringList contentsPrefixPaths() const; /*! * Returns preferred package root. This defaults to kpackage/generic/ */ QString defaultPackageRoot() const; /*! * Returns true if paths/symlinks outside the package itself should be followed. * By default this is set to false for security reasons. */ bool allowExternalPaths() const; /*! * Sets the metadata for the KPackage. This overwrites the current metadata. * This should be used in case a kpackage gets loaded by name, based * on the path a C++ plugin which has embedded metadata. * \since 5.88 */ void setMetadata(const KPluginMetaData &data); /*! * Returns the package metadata object. */ KPluginMetaData metadata() const; /*! * Returns a hash digest of the contents of the package in hexadecimal form * \since 5.21 */ QByteArray cryptographicHash(QCryptographicHash::Algorithm algorithm) const; /*! * Adds a directory to the structure of the package. It is added as * a not-required element with no associated mimeTypes. * If an entry with the given key already exists, the path * is added to it as a search alternative. * * \a key used as an internal label for this directory * * \a path the path within the package for this directory */ void addDirectoryDefinition(const QByteArray &key, const QString &path); /*! * Adds a file to the structure of the package. It is added as * a not-required element with no associated mimeTypes. * If an entry with the given key already exists, the path * is added to it as a search alternative. * * \a key used as an internal label for this file * * \a path the path within the package for this file */ void addFileDefinition(const QByteArray &key, const QString &path); /*! * Removes a definition from the structure of the package. * * \a key the internal label of the file or directory to remove */ void removeDefinition(const QByteArray &key); /*! * Sets whether or not a given part of the structure is required or not. * The path must already have been added using addDirectoryDefinition * or addFileDefinition. * * \a key the entry within the package * * \a required true if this entry is required, false if not */ void setRequired(const QByteArray &key, bool required); /*! * Defines the default mimeTypes for any definitions that do not have * associated mimeTypes. Handy for packages with only one or predominantly * one file type. * * \a mimeTypes a list of mimeTypes **/ void setDefaultMimeTypes(const QStringList &mimeTypes); /*! * Define mimeTypes for a given part of the structure * The path must already have been added using addDirectoryDefinition * or addFileDefinition. * * \a key the entry within the package * * \a mimeTypes a list of mimeTypes **/ void setMimeTypes(const QByteArray &key, const QStringList &mimeTypes); /*! * Sets the prefixes that all the contents in this package should * appear under. This defaults to "contents/" and is added automatically * between the base path and the entries as defined by the package * structure. Multiple entries can be added. * In this case each file request will be searched in all prefixes in order, * and the first found will be returned. * * \a prefix paths the directory prefix to use */ void setContentsPrefixPaths(const QStringList &prefixPaths); /*! * Sets whether or not external paths/symlinks can be followed by a package * * \a allow true if paths/symlinks outside of the package should be followed, * false if they should be rejected. */ void setAllowExternalPaths(bool allow); /*! * Sets preferred package root. */ void setDefaultPackageRoot(const QString &packageRoot); /*! * Sets the fallback package root path * If a file won't be found in this package, it will search it in the package * with the same structure identified by path * It is intended to be used by the packageStructure * * \a path package root path * * \sa setPath */ void setFallbackPackage(const KPackage::Package &package); /*! * Returns The fallback package root path */ KPackage::Package fallbackPackage() const; // Content structure description methods /*! * Returns all directories registered as part of this Package's structure */ QList directories() const; /*! * Returns all directories registered as part of this Package's required structure */ QList requiredDirectories() const; /*! * Returns all files registered as part of this Package's structure */ QList files() const; /*! * Returns all files registered as part of this Package's required structure */ QList requiredFiles() const; private: QExplicitlySharedDataPointer d; friend class PackagePrivate; }; } Q_DECLARE_METATYPE(KPackage::Package) #endif