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36 lines
778 B
Objective-C
36 lines
778 B
Objective-C
//
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// NSData+dataWithContentsOfGZippedFile.m
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// Clock SignalTests
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//
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// Created by Thomas Harte on 08/08/2022.
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// Copyright © 2022 Thomas Harte. All rights reserved.
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//
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#import "NSData+dataWithContentsOfGZippedFile.h"
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#include <zlib.h>
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@implementation NSData (dataWithContentsOfGZippedFile)
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+ (instancetype)dataWithContentsOfGZippedFile:(NSString *)path {
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gzFile compressedFile = gzopen([path UTF8String], "rb");
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if(!compressedFile) {
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return nil;
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}
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NSMutableData *data = [[NSMutableData alloc] init];
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uint8_t buffer[64 * 1024];
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while(true) {
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int length = gzread(compressedFile, buffer, sizeof(buffer));
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if(!length) break;
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[data appendBytes:buffer length:length];
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if(length != sizeof(buffer)) break;
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}
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gzclose(compressedFile);
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return data;
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}
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@end
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