/*
* Copyright (c) 2008-2024 Jonathan Schleifer <js@nil.im>
*
* 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 "OFString.h"
#import "OFZooArchiveEntry.h"
OF_ASSUME_NONNULL_BEGIN
@class OFStream;
/**
* @class OFZooArchive OFZooArchive.h ObjFW/OFZooArchive.h
*
* @brief A class for accessing and manipulating Zoo files.
*/
OF_SUBCLASSING_RESTRICTED
@interface OFZooArchive: OFObject
{
OF_KINDOF(OFStream *) _stream;
uint_least8_t _mode;
OFStringEncoding _encoding;
OFZooArchiveEntry *_Nullable _currentEntry;
#ifdef OF_ZOO_ARCHIVE_M
@public
#endif
OFStream *_Nullable _lastReturnedStream;
}
/**
* @brief The encoding to use for the archive. Defaults to UTF-8.
*/
@property (nonatomic) OFStringEncoding encoding;
/**
* @brief Creates a new OFZooArchive object with the specified stream.
*
* @param stream A stream from which the Zoo archive will be read.
* For read mode, this needs to be an OFSeekableStream.
* @param mode The mode for the Zoo file. The only valid mode is "r" for
* reading.
* @return A new, autoreleased OFZooArchive
*/
+ (instancetype)archiveWithStream: (OFStream *)stream mode: (OFString *)mode;
/**
* @brief Creates a new OFZooArchive object with the specified file.
*
* @param IRI The IRI to the Zoo file
* @param mode The mode for the Zoo file. The only valid mode is "r" for
* reading.
* @return A new, autoreleased OFZooArchive
*/
+ (instancetype)archiveWithIRI: (OFIRI *)IRI mode: (OFString *)mode;
- (instancetype)init OF_UNAVAILABLE;
/**
* @brief Initializes an already allocated OFZooArchive object with the
* specified stream.
*
* @param stream A stream from which the Zoo archive will be read.
* For read mode, this needs to be an OFSeekableStream.
* @param mode The mode for the Zoo file. The only valid mode is "r" for
* reading.
* @return An initialized OFZooArchive
*/
- (instancetype)initWithStream: (OFStream *)stream
mode: (OFString *)mode OF_DESIGNATED_INITIALIZER;
/**
* @brief Initializes an already allocated OFZooArchive object with the
* specified file.
*
* @param IRI The IRI to the Zoo file
* @param mode The mode for the Zoo file. The only valid mode is "r" for
* reading.
* @return An initialized OFZooArchive
*/
- (instancetype)initWithIRI: (OFIRI *)IRI mode: (OFString *)mode;
/**
* @brief Returns the next entry from the Zoo archive or `nil` if all entries
* have been read.
*
* @note This is only available in read mode.
*
* @warning Calling @ref nextEntry will invalidate all streams returned by
* @ref streamForReadingCurrentEntry! Reading from an invalidated
* stream will throw an @ref OFReadFailedException!
*
* @return The next entry from the Zoo archive or `nil` if all entries have
* been read
* @throw OFInvalidFormatException The archive's format is invalid
* @throw OFTruncatedDataException The archive was truncated
*/
- (nullable OFZooArchiveEntry *)nextEntry;
/**
* @brief Returns a stream for reading the current entry.
*
* @note This is only available in read mode.
*
* @note The returned stream conforms to @ref OFReadyForReadingObserving if the
* underlying stream does so, too.
*
* @return A stream for reading the current entry
*/
- (OFStream *)streamForReadingCurrentEntry;
/**
* @brief Closes the OFZooArchive.
*
* @throw OFNotOpenException The archive is not open
*/
- (void)close;
@end
OF_ASSUME_NONNULL_END