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/*
* Copyright (c) 2008-2026 Jonathan Schleifer <js@nil.im>
*
* All rights reserved.
*
* This program is free software: you can redistribute it and/or modify it
* under the terms of the GNU Lesser General Public License version 3.0 only,
* as published by the Free Software Foundation.
*
* This program is distributed in the hope that it will be useful, but WITHOUT
* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
* FITNESS FOR A PARTICULAR PURPOSE. See the GNU Lesser General Public License
* version 3.0 for more details.
*
* You should have received a copy of the GNU Lesser General Public License
* version 3.0 along with this program. If not, see
* <https://www.gnu.org/licenses/>.
*/
#include "config.h"
#import "OFApplication.h"
#import "OFArray.h"
#import "OFFile.h"
#import "OFFileManager.h"
#import "OFIRI.h"
#import "OFLocale.h"
#import "OFStdIOStream.h"
#import "GZIPArchive.h"
#import "OFArc.h"
static OFArc *app;
static void
setPermissions(OFString *destination, OFIRI *source)
{
[app quarantineFile: destination];
#ifdef OF_FILE_MANAGER_SUPPORTS_PERMISSIONS
OFFileManager *fileManager = [OFFileManager defaultManager];
OFFileAttributes attributes = [fileManager
attributesOfItemAtIRI: source];
OFFileAttributeKey key = OFFilePOSIXPermissions;
OFFileAttributes destinationAttributes = [OFDictionary
dictionaryWithObject: [attributes objectForKey: key]
forKey: key];
[fileManager setAttributes: destinationAttributes
ofItemAtPath: destination];
#endif
}
static void
setModificationDate(OFString *path, OFGZIPStream *stream)
{
OFDate *modificationDate = stream.modificationDate;
OFFileAttributes attributes;
if (modificationDate == nil)
return;
attributes = [OFDictionary
dictionaryWithObject: modificationDate
forKey: OFFileModificationDate];
[[OFFileManager defaultManager] setAttributes: attributes
ofItemAtPath: path];
}
@implementation GZIPArchive
+ (void)initialize
{
if (self == [GZIPArchive class])
app = (OFArc *)[OFApplication sharedApplication].delegate;
}
+ (instancetype)archiveWithIRI: (OFIRI *)IRI
stream: (OF_KINDOF(OFStream *))stream
mode: (OFString *)mode
encoding: (OFStringEncoding)encoding
{
return objc_autoreleaseReturnValue(
[[self alloc] initWithIRI: IRI
stream: stream
mode: mode
encoding: encoding]);
}
- (instancetype)initWithIRI: (OFIRI *)IRI
stream: (OF_KINDOF(OFStream *))stream
mode: (OFString *)mode
encoding: (OFStringEncoding)encoding
{
self = [super init];
@try {
_stream = [[OFGZIPStream alloc] initWithStream: stream
mode: mode];
_archiveIRI = [IRI copy];
} @catch (id e) {
objc_release(self);
@throw e;
}
return self;
}
- (void)dealloc
{
objc_release(_stream);
objc_release(_archiveIRI);
[super dealloc];
}
- (void)listFiles
{
[OFStdErr writeLine: OF_LOCALIZED(@"cannot_list_gz",
@"Cannot list files of a .gz archive!")];
app->_exitStatus = 1;
}
- (void)extractFiles: (OFArray OF_GENERIC(OFString *) *)files
{
OFString *fileName;
OFFile *output;
if (files.count != 0) {
[OFStdErr writeLine: OF_LOCALIZED(
@"cannot_extract_specific_file_from_gz",
@"Cannot extract a specific file of a .gz archive!")];
app->_exitStatus = 1;
return;
}
fileName = _archiveIRI.IRIByDeletingPathExtension.lastPathComponent;
if (app->_outputLevel >= 0)
[OFStdErr writeString: OF_LOCALIZED(@"extracting_file",
@"Extracting %[file]...",
@"file", fileName)];
if (![app shouldExtractFile: fileName outFileName: fileName])
return;
output = [OFFile fileWithPath: fileName mode: @"w"];
setPermissions(fileName, _archiveIRI);
while (!_stream.atEndOfStream) {
ssize_t length;
[app checkForCancellation];
length = [app copyBlockFromStream: _stream
toStream: output
fileName: fileName];
if (length < 0) {
app->_exitStatus = 1;
return;
}
}
[output close];
setModificationDate(fileName, _stream);
if (app->_outputLevel >= 0) {
[OFStdErr writeString: @"\r"];
[OFStdErr writeLine: OF_LOCALIZED(@"extracting_file_done",
@"Extracting %[file]... done",
@"file", fileName)];
}
}
- (void)printFiles: (OFArray OF_GENERIC(OFString *) *)files
{
OFString *fileName =
_archiveIRI.IRIByDeletingPathExtension.lastPathComponent;
if (files.count > 0) {
[OFStdErr writeLine: OF_LOCALIZED(
@"cannot_print_specific_file_from_gz",
@"Cannot print a specific file of a .gz archive!")];
app->_exitStatus = 1;
return;
}
while (!_stream.atEndOfStream) {
ssize_t length;
[app checkForCancellation];
length = [app copyBlockFromStream: _stream
toStream: OFStdOut
fileName: fileName];
if (length < 0) {
app->_exitStatus = 1;
return;
}
}
}
@end
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