Gianluca Bertani
117 lines
3.5 KiB
Objective-C
117 lines
3.5 KiB
Objective-C
//
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// OZZipReadStream.m
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// Objective-Zip v. 1.0.5
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//
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// Created by Gianluca Bertani on 28/12/09.
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// Copyright 2009-2017 Gianluca Bertani. All rights reserved.
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//
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// Redistribution and use in source and binary forms, with or without
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// modification, are permitted provided that the following conditions
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// are met:
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//
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// * Redistributions of source code must retain the above copyright notice,
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// this list of conditions and the following disclaimer.
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// * Redistributions in binary form must reproduce the above copyright notice,
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// this list of conditions and the following disclaimer in the documentation
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// and/or other materials provided with the distribution.
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// * Neither the name of Gianluca Bertani nor the names of its contributors
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// may be used to endorse or promote products derived from this software
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// without specific prior written permission.
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//
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// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
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// AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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// IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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// ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE
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// LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
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// CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
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// SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
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// INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
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// CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
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// ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
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// POSSIBILITY OF SUCH DAMAGE.
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//
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#import "OZZipReadStream.h"
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#import "OZZipReadStream+Standard.h"
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#import "OZZipReadStream+NSError.h"
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#import "OZZipReadStream+Internals.h"
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#import "OZZipException.h"
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#import "OZZipException+Internals.h"
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#pragma mark -
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#pragma mark OZZipReadStream extension
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@interface OZZipReadStream () {
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NSString *_fileNameInZip;
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@private
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unzFile _unzFile;
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}
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@end
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#pragma mark -
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#pragma mark OZZipReadStream implementation
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@implementation OZZipReadStream
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#pragma mark -
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#pragma mark Initialization
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- (instancetype) initWithUnzFileStruct:(unzFile)unzFile fileNameInZip:(NSString *)fileNameInZip {
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if (self= [super init]) {
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_unzFile= unzFile;
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_fileNameInZip= fileNameInZip;
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}
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return self;
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}
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#pragma mark -
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#pragma mark Reading data
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- (NSUInteger) readDataWithBuffer:(NSMutableData *)buffer {
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int err= unzReadCurrentFile(_unzFile, [buffer mutableBytes], (uInt) [buffer length]);
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if (err < 0)
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@throw [OZZipException zipExceptionWithError:err reason:@"Error reading '%@' in the zipfile", _fileNameInZip];
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return err;
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}
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- (void) finishedReading {
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int err= unzCloseCurrentFile(_unzFile);
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if (err != UNZ_OK)
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@throw [OZZipException zipExceptionWithError:err reason:@"Error closing '%@' in the zipfile", _fileNameInZip];
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}
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#pragma mark -
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#pragma mark Reading data (NSError variants)
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- (NSInteger) readDataWithBuffer:(NSMutableData *)buffer error:(NSError * __autoreleasing *)error {
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ERROR_WRAP_BEGIN {
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NSUInteger bytesRead= [self readDataWithBuffer:buffer];
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return (bytesRead == 0) ? OZReadStreamResultEndOfFile : bytesRead;
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} ERROR_WRAP_END_AND_RETURN(error, 0);
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}
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- (BOOL) finishedReadingWithError:(NSError * __autoreleasing *)error {
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ERROR_WRAP_BEGIN {
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[self finishedReading];
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return YES;
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} ERROR_WRAP_END_AND_RETURN(error, NO);
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}
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@end
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