ObjFW  Check-in [f3bdf29f07]

	OFCountedMapTableSet.m		\
	OFEmbeddedURIHandler.m		\
	OFGZIPURIHandler.m		\
	OFHuffmanTree.m			\
	OFINIFileSettings.m		\
	OFInvertedCharacterSet.m	\
	OFLHADecompressingStream.m	\
	OFLHAURIHandler.m		\
	OFMapTableDictionary.m		\
	OFMapTableSet.m			\
	OFMutableAdjacentArray.m	\
	OFMutableMapTableDictionary.m	\
	OFMutableMapTableSet.m		\
	OFMutableUTF8String.m		\
	OFNonretainedObjectValue.m	\

 * @param mode The mode for the LHA 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 OFLHAArchive
 */
+ (instancetype)archiveWithURI: (OFURI *)URI mode: (OFString *)mode;

/**
 * @brief Creates a URI for accessing a the specified file within the specified
 *	  LHA archive.
 *
 * @param path The path of the file within the archive
 * @param archive The URI of the archive
 * @return A URI for accessing the specified file within the specified LHA
 *	   archive
 */
+ (OFURI *)URIForFile: (OFString *)path inArchive: (OFURI *)archive;

- (instancetype)init OF_UNAVAILABLE;

/**
 * @brief Initializes an already allocated OFLHAArchive object with the
 *	  specified stream.
 *
 * @param stream A stream from which the LHA archive will be read.

#import "OFLHAArchiveEntry.h"
#import "OFLHAArchiveEntry+Private.h"
#import "OFCRC16.h"
#import "OFLHADecompressingStream.h"
#import "OFSeekableStream.h"
#import "OFStream.h"
#import "OFString.h"
#import "OFURI.h"
#import "OFURIHandler.h"

#import "OFChecksumMismatchException.h"
#import "OFInvalidArgumentException.h"
#import "OFNotImplementedException.h"
#import "OFNotOpenException.h"
#import "OFOutOfRangeException.h"

	return [[[self alloc] initWithStream: stream mode: mode] autorelease];
}

+ (instancetype)archiveWithURI: (OFURI *)URI mode: (OFString *)mode
{
	return [[[self alloc] initWithURI: URI mode: mode] autorelease];
}

+ (OFURI *)URIForFile: (OFString *)path inArchive: (OFURI *)archive
{
	return OFURIForFileInArchive(@"of-lha", path, archive);
}

- (instancetype)init
{
	OF_INVALID_INIT_METHOD
}

- (instancetype)initWithStream: (OFStream *)stream mode: (OFString *)mode

/*
 * Copyright (c) 2008-2022 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 "OFURIHandler.h"

OF_ASSUME_NONNULL_BEGIN

@interface OFLHAURIHandler: OFURIHandler
@end

OF_ASSUME_NONNULL_END

/*
 * Copyright (c) 2008-2022 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.
 */

#include "config.h"

#include <errno.h>

#import "OFLHAURIHandler.h"
#import "OFLHAArchive.h"
#import "OFStream.h"
#import "OFURI.h"

#import "OFInvalidArgumentException.h"
#import "OFOpenItemFailedException.h"

@implementation OFLHAURIHandler
- (OFStream *)openItemAtURI: (OFURI *)URI mode: (OFString *)mode
{
	void *pool = objc_autoreleasePoolPush();
	OFString *percentEncodedPath, *archiveURI, *path;
	size_t pos;
	OFLHAArchive *archive;
	OFLHAArchiveEntry *entry;

	if (![URI.scheme isEqual: @"of-lha"] || URI.host != nil ||
	    URI.port != nil || URI.user != nil || URI.password != nil ||
	    URI.query != nil || URI.fragment != nil)
		@throw [OFInvalidArgumentException exception];

	if (![mode isEqual: @"r"])
		/*
		 * Writing has some implications that are not decided yet: Will
		 * it always append to an archive? What happens if the file
		 * already exists?
		 */
		@throw [OFInvalidArgumentException exception];

	percentEncodedPath = URI.percentEncodedPath;
	pos = [percentEncodedPath rangeOfString: @"!"].location;

	if (pos == OFNotFound)
		@throw [OFInvalidArgumentException exception];

	archiveURI = [percentEncodedPath substringWithRange:
	    OFMakeRange(0, pos)].stringByRemovingPercentEncoding;
	path = [percentEncodedPath substringWithRange:
	    OFMakeRange(pos + 1, percentEncodedPath.length - pos - 1)]
	    .stringByRemovingPercentEncoding;

	archive = [OFLHAArchive
	    archiveWithURI: [OFURI URIWithString: archiveURI]
		      mode: @"r"];

	while ((entry = [archive nextEntry]) != nil) {
		if ([entry.fileName isEqual: path]) {
			OFStream *stream =
			    [[archive streamForReadingCurrentEntry] retain];

			objc_autoreleasePoolPop(pool);

			return [stream autorelease];
		}
	}

	@throw [OFOpenItemFailedException exceptionWithURI: URI
						      mode: mode
						     errNo: ENOENT];
}
@end

#ifdef OF_HAVE_FILES
# import "OFFileURIHandler.h"
#endif
#import "OFGZIPURIHandler.h"
#if defined(OF_HAVE_SOCKETS) && defined(OF_HAVE_THREADS)
# import "OFHTTPURIHandler.h"
#endif
#import "OFLHAURIHandler.h"
#import "OFTarURIHandler.h"
#import "OFZIPURIHandler.h"

#import "OFUnsupportedProtocolException.h"

static OFMutableDictionary OF_GENERIC(OFString *, OFURIHandler *) *handlers;
#ifdef OF_HAVE_THREADS

	[self registerClass: [OFFileURIHandler class] forScheme: @"file"];
#endif
	[self registerClass: [OFGZIPURIHandler class] forScheme: @"of-gzip"];
#if defined(OF_HAVE_SOCKETS) && defined(OF_HAVE_THREADS)
	[self registerClass: [OFHTTPURIHandler class] forScheme: @"http"];
	[self registerClass: [OFHTTPURIHandler class] forScheme: @"https"];
#endif
	[self registerClass: [OFLHAURIHandler class] forScheme: @"of-lha"];
	[self registerClass: [OFTarURIHandler class] forScheme: @"of-tar"];
	[self registerClass: [OFZIPURIHandler class] forScheme: @"of-zip"];
}

+ (bool)registerClass: (Class)class forScheme: (OFString *)scheme
{
#ifdef OF_HAVE_THREADS