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