QuietUnrar/Carthage/Checkouts/UnzipKit/Source/UZKFileInfo.m

109 lines
2.6 KiB
Objective-C

//
// UZKFileInfo.m
// UnzipKit
//
//
#import "UZKFileInfo.h"
#import "unzip.h"
@interface UZKFileInfo ()
@property (readwrite) tm_unz zipTMUDate;
@end
@implementation UZKFileInfo
@synthesize timestamp = _timestamp;
#pragma mark - Initialization
+ (instancetype) fileInfo:(unz_file_info64 *)fileInfo filename:(NSString *)filename {
return [[UZKFileInfo alloc] initWithFileInfo:fileInfo filename:filename];
}
- (instancetype)initWithFileInfo:(unz_file_info64 *)fileInfo filename:(NSString *)filename
{
if ((self = [super init])) {
_filename = filename;
_uncompressedSize = fileInfo->uncompressed_size;
_compressedSize = fileInfo->compressed_size;
_zipTMUDate = fileInfo->tmu_date;
_CRC = fileInfo->crc;
_isEncryptedWithPassword = (fileInfo->flag & 1) != 0;
_isDirectory = [filename hasSuffix:@"/"];
if (_isDirectory) {
_filename = [_filename substringToIndex:_filename.length - 1];
}
_compressionMethod = [self readCompressionMethod:fileInfo->compression_method
flag:fileInfo->flag];
uLong permissions = (fileInfo->external_fa >> 16) & 0777U;
_posixPermissions = permissions ? permissions : 0644U;
}
return self;
}
#pragma mark - Properties
- (NSDate *)timestamp {
if (!_timestamp) {
_timestamp = [self readDate:self.zipTMUDate];
}
return _timestamp;
}
#pragma mark - Private Methods
- (UZKCompressionMethod)readCompressionMethod:(uLong)compressionMethod
flag:(uLong)flag
{
UZKCompressionMethod level = UZKCompressionMethodNone;
if (compressionMethod != 0) {
switch ((flag & 0x6) / 2) {
case 0:
level = UZKCompressionMethodDefault;
break;
case 1:
level = UZKCompressionMethodBest;
break;
default:
level = UZKCompressionMethodFastest;
break;
}
}
return level;
}
- (NSDate *)readDate:(tm_unz)date
{
NSDateComponents *components = [[NSDateComponents alloc] init];
components.day = date.tm_mday;
components.month = date.tm_mon + 1;
components.year = date.tm_year;
components.hour = date.tm_hour;
components.minute = date.tm_min;
components.second = date.tm_sec;
NSCalendar *calendar = [NSCalendar currentCalendar];
return [calendar dateFromComponents:components];
}
@end