/*
* Copyright (c) 2008-2023 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 "OFZIPArchiveEntry.h"
OF_ASSUME_NONNULL_BEGIN
@class OFArray OF_GENERIC(ObjectType);
@class OFMutableArray OF_GENERIC(ObjectType);
@class OFMutableDictionary OF_GENERIC(KeyType, ObjectType);
@class OFSeekableStream;
@class OFStream;
@class OFZIPArchive;
/**
* @protocol OFZIPArchiveDelegate OFZIPArchive.h ObjFW/OFZIPArchive.h
*
* @brief A delegate for OFZIPArchive.
*/
@protocol OFZIPArchiveDelegate <OFObject>
@optional
/**
* @brief A callback that is called when an @ref OFZIPArchive wants to read a
* different archive part.
*
* @param archive The archive that wants to read another part
* @param partNumber The number of the part the archive wants to read
* @param lastPartNumber The number of the last archive part
* @return The stream to read the needed part, or `nil` if no such part exists
*/
- (nullable OFSeekableStream *)archive: (OFZIPArchive *)archive
wantsPartNumbered: (unsigned int)partNumber
lastPartNumber: (unsigned int)lastPartNumber;
@end
/**
* @class OFZIPArchive OFZIPArchive.h ObjFW/OFZIPArchive.h
*
* @brief A class for accessing and manipulating ZIP files.
*/
OF_SUBCLASSING_RESTRICTED
@interface OFZIPArchive: OFObject
{
#ifdef OF_ZIP_ARCHIVE_M
@public
#endif
OFObject <OFZIPArchiveDelegate> *_Nullable _delegate;
OF_KINDOF(OFStream *) _stream;
int64_t _offset;
uint_least8_t _mode;
uint32_t _diskNumber, _lastDiskNumber;
@protected
uint32_t _centralDirectoryDisk;
uint64_t _centralDirectoryEntriesInDisk, _centralDirectoryEntries;
uint64_t _centralDirectorySize;
int64_t _centralDirectoryOffset;
OFString *_Nullable _archiveComment;
#ifdef OF_ZIP_ARCHIVE_M
@public
#endif
OFMutableArray OF_GENERIC(OFZIPArchiveEntry *) *_entries;
OFMutableDictionary OF_GENERIC(OFString *, OFZIPArchiveEntry *)
*_pathToEntryMap;
OFStream *_Nullable _lastReturnedStream;
}
/**
* @brief The delegate of the ZIP archive.
*/
@property OF_NULLABLE_PROPERTY (assign, nonatomic)
OFObject <OFZIPArchiveDelegate> *delegate;
/**
* @brief The archive comment.
*/
@property OF_NULLABLE_PROPERTY (copy, nonatomic) OFString *archiveComment;
/**
* @brief The entries in the central directory of the archive as an array of
* objects of class @ref OFZIPArchiveEntry.
*
* The objects of the array have the same order as the entries in the central
* directory, which does not need to be the order in which the actual files are
* stored.
*/
@property (readonly, nonatomic)
OFArray OF_GENERIC(OFZIPArchiveEntry *) *entries;
/**
* @brief Creates a new OFZIPArchive object with the specified stream.
*
* @param stream A stream from which the ZIP archive will be read.
* For read and append mode, this needs to be an OFSeekableStream.
* @param mode The mode for the ZIP file. Valid modes are "r" for reading,
* "w" for creating a new file and "a" for appending to an existing
* archive.
* @return A new, autoreleased OFZIPArchive
* @throw OFInvalidFormatException The format is not that of a valid ZIP archive
*/
+ (instancetype)archiveWithStream: (OFStream *)stream mode: (OFString *)mode;
/**
* @brief Creates a new OFZIPArchive object with the specified file.
*
* @param IRI The IRI to the ZIP file
* @param mode The mode for the ZIP file. Valid modes are "r" for reading,
* "w" for creating a new file and "a" for appending to an existing
* archive.
* @return A new, autoreleased OFZIPArchive
* @throw OFInvalidFormatException The format is not that of a valid ZIP archive
*/
+ (instancetype)archiveWithIRI: (OFIRI *)IRI mode: (OFString *)mode;
/**
* @brief Creates an IRI for accessing a the specified file within the
* specified ZIP archive.
*
* @param path The path of the file within the archive
* @param IRI The IRI of the archive
* @return An IRI for accessing the specified file within the specified ZIP
* archive
*/
+ (OFIRI *)IRIForFilePath: (OFString *)path inArchiveWithIRI: (OFIRI *)IRI;
- (instancetype)init OF_UNAVAILABLE;
/**
* @brief Initializes an already allocated OFZIPArchive object with the
* specified stream.
*
* @param stream A stream from which the ZIP archive will be read.
* For read and append mode, this needs to be an OFSeekableStream.
* @param mode The mode for the ZIP file. Valid modes are "r" for reading,
* "w" for creating a new file and "a" for appending to an existing
* archive.
* @return An initialized OFZIPArchive
* @throw OFInvalidFormatException The format is not that of a valid ZIP archive
*/
- (instancetype)initWithStream: (OFStream *)stream
mode: (OFString *)mode OF_DESIGNATED_INITIALIZER;
/**
* @brief Initializes an already allocated OFZIPArchive object with the
* specified file.
*
* @param IRI The IRI to the ZIP file
* @param mode The mode for the ZIP file. Valid modes are "r" for reading,
* "w" for creating a new file and "a" for appending to an existing
* archive.
* @return An initialized OFZIPArchive
* @throw OFInvalidFormatException The format is not that of a valid ZIP archive
*/
- (instancetype)initWithIRI: (OFIRI *)IRI mode: (OFString *)mode;
/**
* @brief Returns a stream for reading the specified file from the archive.
*
* @note This method is only available in read mode.
*
* @note The returned stream conforms to @ref OFReadyForReadingObserving if the
* underlying stream does so, too.
*
* @warning Calling @ref streamForReadingFile: will invalidate all streams
* previously returned by @ref streamForReadingFile: or
* @ref streamForWritingEntry:! Reading from or writing to an
* invalidated stream will throw an @ref OFReadFailedException or
* @ref OFWriteFailedException!
*
* @param path The path to the file inside the archive
* @return A stream for reading the specified file form the archive
* @throw OFNotOpenException The archive is not open
* @throw OFInvalidArgumentException The archive is not in read mode
* @throw OFOpenItemFailedException Opening the specified file within the
* archive failed
* @throw OFInvalidFormatException The local header and the header in the
* central directory do not match enough
* @throw OFUnsupportedVersionException The file uses a version of the ZIP
* format that is not supported
*/
- (OFStream *)streamForReadingFile: (OFString *)path;
/**
* @brief Returns a stream for writing the specified entry to the archive.
*
* @note This method is only available in write and append mode.
*
* @note The returned stream conforms to @ref OFReadyForWritingObserving if the
* underlying stream does so, too.
*
* @warning Calling @ref streamForWritingEntry: will invalidate all streams
* previously returned by @ref streamForReadingFile: or
* @ref streamForWritingEntry:! Reading from or writing to an
* invalidated stream will throw an @ref OFReadFailedException or
* @ref OFWriteFailedException!
*
* @param entry The entry to write to the archive.@n
* The following parts of the specified entry will be ignored:
* * The lower 8 bits of the version made by.
* * The lower 8 bits of the minimum version needed.
* * The compressed size.
* * The uncompressed size.
* * The CRC32.
* * Bit 3 and 11 of the general purpose bit flag.
* @return A stream for writing the specified entry to the archive
* @throw OFNotOpenException The archive is not open
* @throw OFInvalidArgumentException The archive is not in write mode
* @throw OFOpenItemFailedException Opening the specified file within the
* archive failed. If
* @ref OFOpenItemFailedException#errNo is
* `EEXIST`, it failed because there is
* already a file with the same name in the
* archive.
* @throw OFNotImplementedException The desired compression method is not
* implemented
*/
- (OFStream *)streamForWritingEntry: (OFZIPArchiveEntry *)entry;
/**
* @brief Closes the OFZIPArchive.
*
* @throw OFNotOpenException The archive is not open
*/
- (void)close;
@end
#ifdef __cplusplus
extern "C" {
#endif
extern uint32_t OFZIPArchiveReadField32(const uint8_t *_Nonnull *_Nonnull,
uint16_t *_Nonnull);
extern uint64_t OFZIPArchiveReadField64(const uint8_t *_Nonnull *_Nonnull,
uint16_t *_Nonnull);
#ifdef __cplusplus
}
#endif
OF_ASSUME_NONNULL_END