Objective-C类是否与Java包java.util.zip
中包含的类相同?
是执行CLI命令的唯一选择吗?
答案 0 :(得分:12)
除了在您自己的流程中读取和编写zip存档之外,使用NSTask运行zip
和unzip
并不是一件好事。
答案 1 :(得分:11)
从iOS8 / OSX10.10开始,有一种使用NSFileCoordinatorReadingOptions.ForUploading
创建zip存档的内置方法。创建没有任何非Cocoa依赖项的zip存档的简单示例:
public extension NSURL {
/// Creates a zip archive of the file/folder represented by this URL and returns a references to the zipped file
///
/// - parameter dest: the destination URL; if nil, the destination will be this URL with ".zip" appended
func zip(dest: NSURL? = nil) throws -> NSURL {
let destURL = dest ?? self.URLByAppendingPathExtension("zip")
let fm = NSFileManager.defaultManager()
var isDir: ObjCBool = false
let srcDir: NSURL
let srcDirIsTemporary: Bool
if let path = self.path where self.fileURL && fm.fileExistsAtPath(path, isDirectory: &isDir) && isDir.boolValue == true {
// this URL is a directory: just zip it in-place
srcDir = self
srcDirIsTemporary = false
} else {
// otherwise we need to copy the simple file to a temporary directory in order for
// NSFileCoordinatorReadingOptions.ForUploading to actually zip it up
srcDir = NSURL(fileURLWithPath: NSTemporaryDirectory()).URLByAppendingPathComponent(NSUUID().UUIDString)
try fm.createDirectoryAtURL(srcDir, withIntermediateDirectories: true, attributes: nil)
let tmpURL = srcDir.URLByAppendingPathComponent(self.lastPathComponent ?? "file")
try fm.copyItemAtURL(self, toURL: tmpURL)
srcDirIsTemporary = true
}
let coord = NSFileCoordinator()
var error: NSError?
// coordinateReadingItemAtURL is invoked synchronously, but the passed in zippedURL is only valid
// for the duration of the block, so it needs to be copied out
coord.coordinateReadingItemAtURL(srcDir, options: NSFileCoordinatorReadingOptions.ForUploading, error: &error) { (zippedURL: NSURL) -> Void in
do {
try fm.copyItemAtURL(zippedURL, toURL: destURL)
} catch let err {
error = err as NSError
}
}
if srcDirIsTemporary { try fm.removeItemAtURL(srcDir) }
if let error = error { throw error }
return destURL
}
}
public extension NSData {
/// Creates a zip archive of this data via a temporary file and returns the zipped contents
func zip() throws -> NSData {
let tmpURL = NSURL(fileURLWithPath: NSTemporaryDirectory()).URLByAppendingPathComponent(NSUUID().UUIDString)
try self.writeToURL(tmpURL, options: NSDataWritingOptions.DataWritingAtomic)
let zipURL = try tmpURL.zip()
let fm = NSFileManager.defaultManager()
let zippedData = try NSData(contentsOfURL: zipURL, options: NSDataReadingOptions())
try fm.removeItemAtURL(tmpURL) // clean up
try fm.removeItemAtURL(zipURL)
return zippedData
}
}
答案 2 :(得分:9)
有一个zip框架,http://code.google.com/p/zip-framework/,但它似乎处于早期(版本0.1)阶段。
从那里得到一个答案:ZipKit,https://github.com/kolpanic/ZipKit
答案 3 :(得分:2)
结帐http://code.google.com/p/ziparchive/。这是一个用于压缩文件的类。谷歌是你的朋友!
答案 4 :(得分:1)
将answer of @marcprux转换为Objective-C。如果这对您有用,请记下他的答案:
NSURL + Compression.h
#import <Foundation/Foundation.h>
@interface NSURL (NSURLExtension)
- (NSURL*)zip;
@end
NSURL + Compression.m
#import "NSURL+Compression.h"
@implementation NSURL (NSURLExtension)
-(NSURL*)zip
{
BOOL isDirectory;
BOOL hasTempDirectory = FALSE;
NSURL* sourceURL;
NSFileManager* fileManager = [NSFileManager defaultManager];
BOOL fileExists = [fileManager fileExistsAtPath:self.path isDirectory:&isDirectory];
NSURL* destinationURL = [self URLByAppendingPathExtension:@"zip"];
if(fileExists && isDirectory)
{
sourceURL = self;
}
else
{
sourceURL = [[NSURL fileURLWithPath:NSTemporaryDirectory()] URLByAppendingPathComponent:[[NSUUID UUID] UUIDString]];
[fileManager createDirectoryAtURL:sourceURL withIntermediateDirectories:TRUE attributes:nil error:nil];
NSString* pathComponent = self.lastPathComponent ? self.lastPathComponent : @"file";
[fileManager copyItemAtURL:self toURL:[sourceURL URLByAppendingPathComponent:pathComponent] error:nil];
hasTempDirectory = TRUE;
}
NSFileCoordinator* fileCoordinator = [[NSFileCoordinator alloc] init];
[fileCoordinator coordinateReadingItemAtURL:sourceURL options:NSFileCoordinatorReadingForUploading error:nil byAccessor:^(NSURL* zippedURL)
{
[fileManager copyItemAtURL:zippedURL toURL:destinationURL error:nil];
}];
if(hasTempDirectory)
{
[fileManager removeItemAtURL:sourceURL error:nil];
}
return destinationURL;
}
@end
NSData + Compression.h
#import <Foundation/Foundation.h>
@interface NSData (NSDataExtension)
- (NSData*)zip;
@end
NSData + Compression.m
#import "NSData+Compression.h"
#import "NSURL+Compression.h"
@implementation NSData (NSDataExtension)
// Creates a zip archive of this data via a temporary file and returns the zipped contents
// Swift to objective c from https://stackoverflow.com/a/32723162/
-(NSData*)zip
{
NSURL* temporaryURL = [[NSURL fileURLWithPath:NSTemporaryDirectory()] URLByAppendingPathComponent:[[NSUUID UUID] UUIDString]];
[self writeToURL:temporaryURL options:NSDataWritingAtomic error:nil];
NSURL* zipURL = [temporaryURL zip];
NSFileManager* fileManager = [NSFileManager defaultManager];
NSData* zippedData = [NSData dataWithContentsOfURL:zipURL options:NSDataReadingMapped error:nil];
[fileManager removeItemAtURL:temporaryURL error:nil];
[fileManager removeItemAtURL:zipURL error:nil];
return zippedData;
}
@end
请让我知道任何改进。
答案 5 :(得分:0)
答案 6 :(得分:0)
查看我的快速zip文件I / O库zipzap。