Artifact 239befceb9d80e8ffc9367ba4a068e51bdfa955b7e6f2581667d1e5a947b8fd7:
- File
src/OFURLHandler.h
— part of check-in
[ad3fc136ba]
at
2018-10-21 18:54:48
on branch trunk
— OFURLHandler: Do not depend on OFFileManager
This fixes --disable-files. (user: js, size: 15073) [annotate] [blame] [check-ins using]
/* * Copyright (c) 2008, 2009, 2010, 2011, 2012, 2013, 2014, 2015, 2016, 2017, * 2018 * Jonathan Schleifer <js@heap.zone> * * All rights reserved. * * This file is part of ObjFW. It may be distributed under the terms of the * Q Public License 1.0, which can be found in the file LICENSE.QPL included in * the packaging of this file. * * Alternatively, it may be distributed under the terms of the GNU General * Public License, either version 2 or 3, which can be found in the file * LICENSE.GPLv2 or LICENSE.GPLv3 respectively included in the packaging of this * file. */ #import "OFObject.h" #import "OFDictionary.h" #import "OFString.h" OF_ASSUME_NONNULL_BEGIN /*! @file */ @class OFArray OF_GENERIC(ObjectType); @class OFDate; @class OFStream; @class OFURL; /*! * @brief A key for a file attribute in the file attributes dictionary. * * Possible keys for file URLs are: * * * @ref of_file_attribute_key_size * * @ref of_file_attribute_key_type * * @ref of_file_attribute_key_posix_permissions * * @ref of_file_attribute_key_posix_uid * * @ref of_file_attribute_key_posix_gid * * @ref of_file_attribute_key_owner * * @ref of_file_attribute_key_group * * @ref of_file_attribute_key_last_access_date * * @ref of_file_attribute_key_modification_date * * @ref of_file_attribute_key_status_change_date * * @ref of_file_attribute_key_symbolic_link_destination * * Other URL schemes might not have all keys and might have keys not listed. */ typedef OFConstantString *of_file_attribute_key_t; /*! * @brief The type of a file. * * Possibles values for file URLs are: * * * @ref of_file_type_regular * * @ref of_file_type_directory * * @ref of_file_type_symbolic_link * * @ref of_file_type_fifo * * @ref of_file_type_character_special * * @ref of_file_type_block_special * * @ref of_file_type_socket * * Other URL schemes might not have all types and might have types not listed. */ typedef OFConstantString *of_file_type_t; /*! * @brief A dictionary mapping keys of type @ref of_file_attribute_key_t * to their attribute values. */ typedef OFDictionary OF_GENERIC(of_file_attribute_key_t, id) *of_file_attributes_t; /*! * @brief A mutable dictionary mapping keys of type * @ref of_file_attribute_key_t to their attribute values. */ typedef OFMutableDictionary OF_GENERIC(of_file_attribute_key_t, id) *of_mutable_file_attributes_t; #ifdef __cplusplus extern "C" { #endif /*! * @brief The size of the file as an @ref OFNumber. * * For convenience, a category on @ref OFDictionary is provided to access this * via @ref OFDictionary#fileSize. */ extern const of_file_attribute_key_t of_file_attribute_key_size; /*! * @brief The type of the file. * * The corresponding value is of type @ref of_file_type_t. * * For convenience, a category on @ref OFDictionary is provided to access this * via @ref OFDictionary#fileType. */ extern const of_file_attribute_key_t of_file_attribute_key_type; /*! * @brief The POSIX permissions of the file as an @ref OFNumber. * * For convenience, a category on @ref OFDictionary is provided to access this * via @ref OFDictionary#filePOSIXPermissions. */ extern const of_file_attribute_key_t of_file_attribute_key_posix_permissions; /*! * @brief The POSIX UID of the file as an @ref OFNumber. * * For convenience, a category on @ref OFDictionary is provided to access this * via @ref OFDictionary#filePOSIXUID. */ extern const of_file_attribute_key_t of_file_attribute_key_posix_uid; /*! * @brief The POSIX GID of the file as an @ref OFNumber. * * For convenience, a category on @ref OFDictionary is provided to access this * via @ref OFDictionary#filePOSIXGID. */ extern const of_file_attribute_key_t of_file_attribute_key_posix_gid; /*! * @brief The owner of the file as an @ref OFString. * * For convenience, a category on @ref OFDictionary is provided to access this * via @ref OFDictionary#fileOwner. */ extern const of_file_attribute_key_t of_file_attribute_key_owner; /*! * @brief The group of the file as an @ref OFString. * * For convenience, a category on @ref OFDictionary is provided to access this * via @ref OFDictionary#fileGroup. */ extern const of_file_attribute_key_t of_file_attribute_key_group; /*! * @brief The last access date of the file as an @ref OFDate. * * For convenience, a category on @ref OFDictionary is provided to access this * via @ref OFDictionary#fileLastAccessDate. */ extern const of_file_attribute_key_t of_file_attribute_key_last_access_date; /*! * @brief The last modification date of the file as an @ref OFDate. * * For convenience, a category on @ref OFDictionary is provided to access this * via @ref OFDictionary#fileModificationDate. */ extern const of_file_attribute_key_t of_file_attribute_key_modification_date; /*! * @brief The last status change date of the file as an @ref OFDate. * * For convenience, a category on @ref OFDictionary is provided to access this * via @ref OFDictionary#fileStatusChangeDate. */ extern const of_file_attribute_key_t of_file_attribute_key_status_change_date; /*! * @brief The destination of a symbolic link as an @ref OFString. * * For convenience, a category on @ref OFDictionary is provided to access this * via @ref OFDictionary#fileSymbolicLinkDestination. */ extern const of_file_attribute_key_t of_file_attribute_key_symbolic_link_destination; /*! * @brief A regular file. */ extern const of_file_type_t of_file_type_regular; /*! * @brief A directory. */ extern const of_file_type_t of_file_type_directory; /*! * @brief A symbolic link. */ extern const of_file_type_t of_file_type_symbolic_link; /*! * @brief A FIFO. */ extern const of_file_type_t of_file_type_fifo; /*! * @brief A character special file. */ extern const of_file_type_t of_file_type_character_special; /*! * @brief A block special file. */ extern const of_file_type_t of_file_type_block_special; /*! * @brief A socket. */ extern const of_file_type_t of_file_type_socket; #ifdef __cplusplus } #endif /*! * @class OFURLHandler OFURLHandler.h ObjFW/OFURLHandler.h * * @brief A handler for a URL scheme. */ @interface OFURLHandler: OFObject { OFString *_scheme; } /*! * @brief The scheme this OFURLHandler handles. */ @property (readonly, nonatomic) OFString *scheme; /*! * @brief Registers the specified class as the handler for the specified scheme. * * If the same class is specified for two schemes, one instance of it is * created per scheme. * * @param class_ The class to register as the handler for the specified scheme * @param scheme The scheme for which to register the handler * @return Whether the class was successfully registered. If a handler for the * same scheme is already registered, registration fails. */ + (bool)registerClass: (Class)class_ forScheme: (OFString *)scheme; /*! * @brief Returns the handler for the specified URL. * * @return The handler for the specified URL. */ + (nullable OF_KINDOF(OFURLHandler *))handlerForURL: (OFURL *)URL; - (instancetype)init OF_UNAVAILABLE; /*! * @brief Initializes the handler for the specified scheme. * * @param scheme The scheme to initialize for * @return An initialized URL handler */ - (instancetype)initWithScheme: (OFString *)scheme OF_DESIGNATED_INITIALIZER; /*! * @brief Opens the item at the specified URL. * * @param URL The URL of the item which should be opened * @param mode The mode in which the file should be opened.@n * Possible modes are: * @n * Mode | Description * ---------------|------------------------------------- * `r` | Read-only * `r+` | Read-write * `w` | Write-only, create or truncate * `wx` | Write-only, create or fail, exclusive * `w+` | Read-write, create or truncate * `w+x` | Read-write, create or fail, exclusive * `a` | Write-only, create or append * `a+` | Read-write, create or append * @n * The handler is allowed to not implement all modes and is also * allowed to implement additional, scheme-specific modes. */ - (OFStream *)openItemAtURL: (OFURL *)URL mode: (OFString *)mode; /*! * @brief Returns the attributes for the item at the specified URL. * * @param URL The URL to return the attributes for * @return A dictionary of attributes for the specified URL, with the keys of * type @ref of_file_attribute_key_t */ - (of_file_attributes_t)attributesOfItemAtURL: (OFURL *)URL; /*! * @brief Sets the attributes for the item at the specified URL. * * All attributes not part of the dictionary are left unchanged. * * @param attributes The attributes to set for the specified URL * @param URL The URL of the item to set the attributes for */ - (void)setAttributes: (of_file_attributes_t)attributes ofItemAtURL: (OFURL *)URL; /*! * @brief Checks whether a file exists at the specified URL. * * @param URL The URL to check * @return A boolean whether there is a file at the specified URL */ - (bool)fileExistsAtURL: (OFURL *)URL; /*! * @brief Checks whether a directory exists at the specified URL. * * @param URL The URL to check * @return A boolean whether there is a directory at the specified URL */ - (bool)directoryExistsAtURL: (OFURL *)URL; /*! * @brief Creates a directory at the specified URL. * * @param URL The URL of the directory to create */ - (void)createDirectoryAtURL: (OFURL *)URL; /*! * @brief Returns an array with the items in the specified directory. * * @note `.` and `..` are not part of the returned array. * * @param URL The URL to the directory whose items should be returned * @return An array of OFString with the items in the specified directory */ - (OFArray OF_GENERIC(OFString *) *)contentsOfDirectoryAtURL: (OFURL *)URL; /*! * @brief Removes the item at the specified URL. * * If the item at the specified URL is a directory, it is removed recursively. * * @param URL The URL to the item which should be removed */ - (void)removeItemAtURL: (OFURL *)URL; /*! * @brief Creates a hard link for the specified item. * * The destination URL must have a full path, which means it must include the * name of the item. * * This method is not available for all URLs. * * @param source The URL to the item for which a link should be created * @param destination The URL to the item which should link to the source */ - (void)linkItemAtURL: (OFURL *)source toURL: (OFURL *)destination; /*! * @brief Creates a symbolic link for an item. * * The destination uRL must have a full path, which means it must include the * name of the item. * * This method is not available for all URLs. * * @note On Windows, this requires at least Windows Vista and administrator * privileges! * * @param URL The URL to the item which should symbolically link to the target * @param target The target of the symbolic link */ - (void)createSymbolicLinkAtURL: (OFURL *)URL withDestinationPath: (OFString *)target; /*! * @brief Tries to efficiently copy an item. If a copy would only be possible * by reading the entire item and then writing it, it returns false. * * The destination URL must have a full path, which means it must include the * name of the item. * * If an item already exists, the copy operation fails. This is also the case * if a directory is copied and an item already exists in the destination * directory. * * @param source The file, directory or symbolic link to copy * @param destination The destination URL * @return True if an efficient copy was performed, false if an efficient copy * was not possible. Note that errors while performing a copy are * reported via exceptions and not by returning false! */ - (bool)copyItemAtURL: (OFURL *)source toURL: (OFURL *)destination; /*! * @brief Tries to efficiently move an item. If a move would only be possible * by copying the source and deleting it, it returns false. * * The destination URL must have a full path, which means it must include the * name of the item. * * If the destination is on a different logical device or uses a different * scheme, an efficient move is not possible and false is returned. * * @param source The item to rename * @param destination The new name for the item * @return True if an efficient move was performed, false if an efficient move * was not possible. Note that errors while performing a move are * reported via exceptions and not by returning false! */ - (bool)moveItemAtURL: (OFURL *)source toURL: (OFURL *)destination; @end @interface OFDictionary (FileAttributes) /*! * The @ref of_file_attribute_key_size key from the dictionary. * * Raises an @ref OFUndefinedKeyException if the key is missing. */ @property (readonly, nonatomic) uintmax_t fileSize; /*! * The @ref of_file_attribute_key_type key from the dictionary. * * Raises an @ref OFUndefinedKeyException if the key is missing. */ @property (readonly, nonatomic) of_file_type_t fileType; /*! * The @ref of_file_attribute_key_posix_permissions key from the dictionary. * * Raises an @ref OFUndefinedKeyException if the key is missing. */ @property (readonly, nonatomic) uint16_t filePOSIXPermissions; /*! * The @ref of_file_attribute_key_posix_uid key from the dictionary. * * Raises an @ref OFUndefinedKeyException if the key is missing. */ @property (readonly, nonatomic) uint32_t filePOSIXUID; /*! * The @ref of_file_attribute_key_posix_gid key from the dictionary. * * Raises an @ref OFUndefinedKeyException if the key is missing. */ @property (readonly, nonatomic) uint32_t filePOSIXGID; /*! * The @ref of_file_attribute_key_owner key from the dictionary. * * Raises an @ref OFUndefinedKeyException if the key is missing. */ @property (readonly, nonatomic) OFString *fileOwner; /*! * The @ref of_file_attribute_key_group key from the dictionary. * * Raises an @ref OFUndefinedKeyException if the key is missing. */ @property (readonly, nonatomic) OFString *fileGroup; /*! * The @ref of_file_attribute_key_last_access_date key from the dictionary. * * Raises an @ref OFUndefinedKeyException if the key is missing. */ @property (readonly, nonatomic) OFDate *fileLastAccessDate; /*! * The @ref of_file_attribute_key_modification_date key from the dictionary. * * Raises an @ref OFUndefinedKeyException if the key is missing. */ @property (readonly, nonatomic) OFDate *fileModificationDate; /*! * The @ref of_file_attribute_key_status_change_date key from the dictionary. * * Raises an @ref OFUndefinedKeyException if the key is missing. */ @property (readonly, nonatomic) OFDate *fileStatusChangeDate; /*! * The @ref of_file_attribute_key_symbolic_link_destination key from the * dictionary. * * Raises an @ref OFUndefinedKeyException if the key is missing. */ @property (readonly, nonatomic) OFString *fileSymbolicLinkDestination; @end OF_ASSUME_NONNULL_END