mirror of https://github.com/axmolengine/axmol.git
422 lines
14 KiB
Objective-C
422 lines
14 KiB
Objective-C
//
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// SSZipArchive.m
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// SSZipArchive
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//
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// Created by Sam Soffes on 7/21/10.
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// Copyright (c) Sam Soffes 2010-2011. All rights reserved.
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//
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#import "SSZipArchive.h"
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#include "minizip/zip.h"
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#import "zlib.h"
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#import "zconf.h"
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#include <sys/stat.h>
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#define CHUNK 16384
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@interface SSZipArchive ()
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+ (NSDate *)_dateWithMSDOSFormat:(UInt32)msdosDateTime;
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@end
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@implementation SSZipArchive {
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NSString *_path;
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NSString *_filename;
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zipFile _zip;
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}
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#pragma mark - Unzipping
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+ (BOOL)unzipFileAtPath:(NSString *)path toDestination:(NSString *)destination {
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return [self unzipFileAtPath:path toDestination:destination delegate:nil];
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}
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+ (BOOL)unzipFileAtPath:(NSString *)path toDestination:(NSString *)destination overwrite:(BOOL)overwrite password:(NSString *)password error:(NSError **)error {
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return [self unzipFileAtPath:path toDestination:destination overwrite:overwrite password:password error:error delegate:nil];
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}
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+ (BOOL)unzipFileAtPath:(NSString *)path toDestination:(NSString *)destination delegate:(id<SSZipArchiveDelegate>)delegate {
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return [self unzipFileAtPath:path toDestination:destination overwrite:YES password:nil error:nil delegate:delegate];
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}
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+ (BOOL)unzipFileAtPath:(NSString *)path toDestination:(NSString *)destination overwrite:(BOOL)overwrite password:(NSString *)password error:(NSError **)error delegate:(id<SSZipArchiveDelegate>)delegate {
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// Begin opening
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zipFile zip = unzOpen((const char*)[path UTF8String]);
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if (zip == NULL) {
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NSDictionary *userInfo = [NSDictionary dictionaryWithObject:@"failed to open zip file" forKey:NSLocalizedDescriptionKey];
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if (error) {
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*error = [NSError errorWithDomain:@"SSZipArchiveErrorDomain" code:-1 userInfo:userInfo];
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}
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return NO;
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}
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unz_global_info globalInfo = {0ul, 0ul};
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unzGetGlobalInfo(zip, &globalInfo);
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// Begin unzipping
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if (unzGoToFirstFile(zip) != UNZ_OK) {
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NSDictionary *userInfo = [NSDictionary dictionaryWithObject:@"failed to open first file in zip file" forKey:NSLocalizedDescriptionKey];
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if (error) {
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*error = [NSError errorWithDomain:@"SSZipArchiveErrorDomain" code:-2 userInfo:userInfo];
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}
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return NO;
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}
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BOOL success = YES;
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int ret = 0;
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unsigned char buffer[4096] = {0};
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NSFileManager *fileManager = [NSFileManager defaultManager];
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NSMutableSet *directoriesModificationDates = [[NSMutableSet alloc] init];
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// Message delegate
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if ([delegate respondsToSelector:@selector(zipArchiveWillUnzipArchiveAtPath:zipInfo:)]) {
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[delegate zipArchiveWillUnzipArchiveAtPath:path zipInfo:globalInfo];
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}
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NSInteger currentFileNumber = 0;
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do {
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if ([password length] == 0) {
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ret = unzOpenCurrentFile(zip);
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} else {
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ret = unzOpenCurrentFilePassword(zip, [password cStringUsingEncoding:NSASCIIStringEncoding]);
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}
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if (ret != UNZ_OK) {
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success = NO;
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break;
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}
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// Reading data and write to file
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unz_file_info fileInfo;
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memset(&fileInfo, 0, sizeof(unz_file_info));
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ret = unzGetCurrentFileInfo(zip, &fileInfo, NULL, 0, NULL, 0, NULL, 0);
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if (ret != UNZ_OK) {
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success = NO;
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unzCloseCurrentFile(zip);
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break;
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}
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// Message delegate
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if ([delegate respondsToSelector:@selector(zipArchiveWillUnzipFileAtIndex:totalFiles:archivePath:fileInfo:)]) {
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[delegate zipArchiveWillUnzipFileAtIndex:currentFileNumber totalFiles:(NSInteger)globalInfo.number_entry
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archivePath:path fileInfo:fileInfo];
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}
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char *filename = (char *)malloc(fileInfo.size_filename + 1);
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unzGetCurrentFileInfo(zip, &fileInfo, filename, fileInfo.size_filename + 1, NULL, 0, NULL, 0);
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filename[fileInfo.size_filename] = '\0';
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//
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// NOTE
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// I used the ZIP spec from here:
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// http://www.pkware.com/documents/casestudies/APPNOTE.TXT
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//
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// ...to deduce this method of detecting whether the file in the ZIP is a symbolic link.
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// If it is, it is listed as a directory but has a data size greater than zero (real
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// directories have it equal to 0) and the included, uncompressed data is the symbolic link path.
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//
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// ZIP files did not originally include support for symbolic links so the specification
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// doesn't include anything in them that isn't part of a unix extension that isn't being used
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// by the archivers we're testing. Most of this is figured out through trial and error and
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// reading ZIP headers in hex editors. This seems to do the trick though.
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//
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const uLong ZipCompressionMethodStore = 0;
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BOOL fileIsSymbolicLink = NO;
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if((fileInfo.compression_method == ZipCompressionMethodStore) && // Is it compressed?
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(S_ISDIR(fileInfo.external_fa)) && // Is it marked as a directory
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(fileInfo.compressed_size > 0)) // Is there any data?
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{
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fileIsSymbolicLink = YES;
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}
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// Check if it contains directory
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NSString *strPath = [NSString stringWithCString:filename encoding:NSUTF8StringEncoding];
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BOOL isDirectory = NO;
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if (filename[fileInfo.size_filename-1] == '/' || filename[fileInfo.size_filename-1] == '\\') {
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isDirectory = YES;
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}
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free(filename);
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// Contains a path
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if ([strPath rangeOfCharacterFromSet:[NSCharacterSet characterSetWithCharactersInString:@"/\\"]].location != NSNotFound) {
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strPath = [strPath stringByReplacingOccurrencesOfString:@"\\" withString:@"/"];
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}
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NSString *fullPath = [destination stringByAppendingPathComponent:strPath];
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NSError *err = nil;
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NSDate *modDate = [[self class] _dateWithMSDOSFormat:(UInt32)fileInfo.dosDate];
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NSDictionary *directoryAttr = [NSDictionary dictionaryWithObjectsAndKeys:modDate, NSFileCreationDate, modDate, NSFileModificationDate, nil];
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if (isDirectory) {
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[fileManager createDirectoryAtPath:fullPath withIntermediateDirectories:YES attributes:directoryAttr error:&err];
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} else {
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[fileManager createDirectoryAtPath:[fullPath stringByDeletingLastPathComponent] withIntermediateDirectories:YES attributes:directoryAttr error:&err];
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}
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if (nil != err) {
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NSLog(@"[SSZipArchive] Error: %@", err.localizedDescription);
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}
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if(!fileIsSymbolicLink)
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[directoriesModificationDates addObject: [NSDictionary dictionaryWithObjectsAndKeys:fullPath, @"path", modDate, @"modDate", nil]];
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if ([fileManager fileExistsAtPath:fullPath] && !isDirectory && !overwrite) {
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unzCloseCurrentFile(zip);
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ret = unzGoToNextFile(zip);
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continue;
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}
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if(!fileIsSymbolicLink)
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{
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FILE *fp = fopen((const char*)[fullPath UTF8String], "wb");
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while (fp) {
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int readBytes = unzReadCurrentFile(zip, buffer, 4096);
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if (readBytes > 0) {
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fwrite(buffer, readBytes, 1, fp );
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} else {
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break;
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}
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}
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if (fp) {
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fclose(fp);
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// Set the original datetime property
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if (fileInfo.dosDate != 0) {
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NSDate *orgDate = [[self class] _dateWithMSDOSFormat:(UInt32)fileInfo.dosDate];
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NSDictionary *attr = [NSDictionary dictionaryWithObject:orgDate forKey:NSFileModificationDate];
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if (attr) {
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if ([fileManager setAttributes:attr ofItemAtPath:fullPath error:nil] == NO) {
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// Can't set attributes
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NSLog(@"[SSZipArchive] Failed to set attributes");
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}
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}
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}
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}
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}
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else
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{
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// Get the path for the symbolic link
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NSURL* symlinkURL = [NSURL fileURLWithPath:fullPath];
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NSMutableString* destinationPath = [NSMutableString string];
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int bytesRead = 0;
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while((bytesRead = unzReadCurrentFile(zip, buffer, 4096)) > 0)
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{
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buffer[bytesRead] = 0;
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[destinationPath appendString:[NSString stringWithUTF8String:(const char*)buffer]];
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}
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//NSLog(@"Symlinking to: %@", destinationPath);
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NSURL* destinationURL = [NSURL fileURLWithPath:destinationPath];
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// Create the symbolic link
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NSError* symlinkError = nil;
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[fileManager createSymbolicLinkAtURL:symlinkURL withDestinationURL:destinationURL error:&symlinkError];
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if(symlinkError != nil)
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{
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NSLog(@"Failed to create symbolic link at \"%@\" to \"%@\". Error: %@", symlinkURL.absoluteString, destinationURL.absoluteString, symlinkError.localizedDescription);
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}
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}
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unzCloseCurrentFile( zip );
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ret = unzGoToNextFile( zip );
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// Message delegate
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if ([delegate respondsToSelector:@selector(zipArchiveDidUnzipFileAtIndex:totalFiles:archivePath:fileInfo:)]) {
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[delegate zipArchiveDidUnzipFileAtIndex:currentFileNumber totalFiles:(NSInteger)globalInfo.number_entry
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archivePath:path fileInfo:fileInfo];
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}
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currentFileNumber++;
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} while(ret == UNZ_OK && UNZ_OK != UNZ_END_OF_LIST_OF_FILE);
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// Close
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unzClose(zip);
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// The process of decompressing the .zip archive causes the modification times on the folders
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// to be set to the present time. So, when we are done, they need to be explicitly set.
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// set the modification date on all of the directories.
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NSError * err = nil;
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for (NSDictionary * d in directoriesModificationDates) {
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if (![[NSFileManager defaultManager] setAttributes:[NSDictionary dictionaryWithObjectsAndKeys:[d objectForKey:@"modDate"], NSFileModificationDate, nil] ofItemAtPath:[d objectForKey:@"path"] error:&err]) {
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NSLog(@"[SSZipArchive] Set attributes failed for directory: %@.", [d objectForKey:@"path"]);
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}
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if (err) {
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NSLog(@"[SSZipArchive] Error setting directory file modification date attribute: %@",err.localizedDescription);
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}
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}
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#if !__has_feature(objc_arc)
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[directoriesModificationDates release];
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#endif
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// Message delegate
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if (success && [delegate respondsToSelector:@selector(zipArchiveDidUnzipArchiveAtPath:zipInfo:unzippedPath:)]) {
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[delegate zipArchiveDidUnzipArchiveAtPath:path zipInfo:globalInfo unzippedPath:destination];
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}
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return success;
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}
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#pragma mark - Zipping
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+ (BOOL)createZipFileAtPath:(NSString *)path withFilesAtPaths:(NSArray *)paths {
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BOOL success = NO;
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SSZipArchive *zipArchive = [[SSZipArchive alloc] initWithPath:path];
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if ([zipArchive open]) {
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for (NSString *path in paths) {
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[zipArchive writeFile:path];
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}
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success = [zipArchive close];
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}
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#if !__has_feature(objc_arc)
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[zipArchive release];
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#endif
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return success;
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}
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- (id)initWithPath:(NSString *)path {
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if ((self = [super init])) {
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_path = [path copy];
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}
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return self;
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}
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#if !__has_feature(objc_arc)
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- (void)dealloc {
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[_path release];
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[super dealloc];
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}
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#endif
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- (BOOL)open {
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NSAssert((_zip == NULL), @"Attempting open an archive which is already open");
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_zip = zipOpen([_path UTF8String], APPEND_STATUS_CREATE);
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return (NULL != _zip);
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}
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- (void)zipInfo:(zip_fileinfo*)zipInfo setDate:(NSDate*)date {
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NSCalendar *currentCalendar = [NSCalendar currentCalendar];
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uint flags = NSYearCalendarUnit | NSMonthCalendarUnit | NSDayCalendarUnit | NSHourCalendarUnit | NSMinuteCalendarUnit | NSSecondCalendarUnit;
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NSDateComponents *components = [currentCalendar components:flags fromDate:date];
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zipInfo->tmz_date.tm_sec = (unsigned int)components.second;
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zipInfo->tmz_date.tm_min = (unsigned int)components.minute;
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zipInfo->tmz_date.tm_hour = (unsigned int)components.hour;
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zipInfo->tmz_date.tm_mday = (unsigned int)components.day;
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zipInfo->tmz_date.tm_mon = (unsigned int)components.month - 1;
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zipInfo->tmz_date.tm_year = (unsigned int)components.year;
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}
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- (BOOL)writeFile:(NSString *)path {
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NSAssert((_zip != NULL), @"Attempting to write to an archive which was never opened");
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FILE *input = fopen([path UTF8String], "r");
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if (NULL == input) {
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return NO;
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}
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zipOpenNewFileInZip(_zip, [[path lastPathComponent] UTF8String], NULL, NULL, 0, NULL, 0, NULL, Z_DEFLATED,
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Z_DEFAULT_COMPRESSION);
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void *buffer = malloc(CHUNK);
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unsigned int len = 0;
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while (!feof(input)) {
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len = (unsigned int) fread(buffer, 1, CHUNK, input);
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zipWriteInFileInZip(_zip, buffer, len);
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}
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zipCloseFileInZip(_zip);
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free(buffer);
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return YES;
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}
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- (BOOL)writeData:(NSData *)data filename:(NSString *)filename {
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if (!_zip) {
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return NO;
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}
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if (!data) {
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return NO;
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}
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zip_fileinfo zipInfo = {{0,0,0,0,0,0},0,0,0};
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[self zipInfo:&zipInfo setDate:[NSDate date]];
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zipOpenNewFileInZip(_zip, [filename UTF8String], &zipInfo, NULL, 0, NULL, 0, NULL, Z_DEFLATED, Z_DEFAULT_COMPRESSION);
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zipWriteInFileInZip(_zip, data.bytes, (unsigned int)data.length);
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zipCloseFileInZip(_zip);
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return YES;
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}
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- (BOOL)close {
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NSAssert((_zip != NULL), @"[SSZipArchive] Attempting to close an archive which was never opened");
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zipClose(_zip, NULL);
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return YES;
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}
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#pragma mark - Private
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// Format from http://newsgroups.derkeiler.com/Archive/Comp/comp.os.msdos.programmer/2009-04/msg00060.html
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// Two consecutive words, or a longword, YYYYYYYMMMMDDDDD hhhhhmmmmmmsssss
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// YYYYYYY is years from 1980 = 0
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// sssss is (seconds/2).
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//
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// 3658 = 0011 0110 0101 1000 = 0011011 0010 11000 = 27 2 24 = 2007-02-24
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// 7423 = 0111 0100 0010 0011 - 01110 100001 00011 = 14 33 2 = 14:33:06
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+ (NSDate *)_dateWithMSDOSFormat:(UInt32)msdosDateTime {
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static const UInt32 kYearMask = 0xFE000000;
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static const UInt32 kMonthMask = 0x1E00000;
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static const UInt32 kDayMask = 0x1F0000;
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static const UInt32 kHourMask = 0xF800;
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static const UInt32 kMinuteMask = 0x7E0;
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static const UInt32 kSecondMask = 0x1F;
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NSCalendar *gregorian = [[NSCalendar alloc] initWithCalendarIdentifier:NSGregorianCalendar];
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NSDateComponents *components = [[NSDateComponents alloc] init];
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NSAssert(0xFFFFFFFF == (kYearMask | kMonthMask | kDayMask | kHourMask | kMinuteMask | kSecondMask), @"[SSZipArchive] MSDOS date masks don't add up");
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[components setYear:1980 + ((msdosDateTime & kYearMask) >> 25)];
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[components setMonth:(msdosDateTime & kMonthMask) >> 21];
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[components setDay:(msdosDateTime & kDayMask) >> 16];
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[components setHour:(msdosDateTime & kHourMask) >> 11];
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[components setMinute:(msdosDateTime & kMinuteMask) >> 5];
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[components setSecond:(msdosDateTime & kSecondMask) * 2];
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NSDate *date = [NSDate dateWithTimeInterval:0 sinceDate:[gregorian dateFromComponents:components]];
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#if !__has_feature(objc_arc)
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[gregorian release];
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[components release];
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#endif
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return date;
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}
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@end
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