mirror of
https://github.com/TomHarte/CLK.git
synced 2024-11-23 03:32:32 +00:00
36 lines
778 B
Objective-C
36 lines
778 B
Objective-C
//
|
|
// NSData+dataWithContentsOfGZippedFile.m
|
|
// Clock SignalTests
|
|
//
|
|
// Created by Thomas Harte on 08/08/2022.
|
|
// Copyright © 2022 Thomas Harte. All rights reserved.
|
|
//
|
|
|
|
#import "NSData+dataWithContentsOfGZippedFile.h"
|
|
|
|
#include <zlib.h>
|
|
|
|
@implementation NSData (dataWithContentsOfGZippedFile)
|
|
|
|
+ (instancetype)dataWithContentsOfGZippedFile:(NSString *)path {
|
|
gzFile compressedFile = gzopen([path UTF8String], "rb");
|
|
if(!compressedFile) {
|
|
return nil;
|
|
}
|
|
|
|
NSMutableData *data = [[NSMutableData alloc] init];
|
|
|
|
uint8_t buffer[64 * 1024];
|
|
while(true) {
|
|
int length = gzread(compressedFile, buffer, sizeof(buffer));
|
|
if(!length) break;
|
|
[data appendBytes:buffer length:length];
|
|
if(length != sizeof(buffer)) break;
|
|
}
|
|
|
|
gzclose(compressedFile);
|
|
return data;
|
|
}
|
|
|
|
@end
|