276 lines
7.2 KiB
Objective-C
276 lines
7.2 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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#include "minizip/unzip.h"
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#import "zlib.h"
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#import "zconf.h"
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#define CHUNK 16384
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@interface SSZipArchive ()
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+ (NSDate *)_dateFor1980;
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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 overwrite:YES password:nil error: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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// 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;
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unsigned char buffer[4096] = {0};
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NSFileManager *fileManager = [NSFileManager defaultManager];
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NSDate *nineteenEighty = [self _dateFor1980];
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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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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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// 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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if (isDirectory) {
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[fileManager createDirectoryAtPath:fullPath withIntermediateDirectories:YES attributes:nil error:nil];
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} else {
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[fileManager createDirectoryAtPath:[fullPath stringByDeletingLastPathComponent] withIntermediateDirectories:YES attributes:nil error:nil];
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}
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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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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 = [[NSDate alloc] initWithTimeInterval:(NSTimeInterval)fileInfo.dosDate sinceDate:nineteenEighty];
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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(@"Failed to set attributes");
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}
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}
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[orgDate release];
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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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} 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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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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[zipArchive release];
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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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- (void)dealloc {
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[_path release];
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[super dealloc];
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}
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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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{
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NSCalendar* currCalendar = [NSCalendar currentCalendar];
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uint flags = NSYearCalendarUnit | NSMonthCalendarUnit | NSDayCalendarUnit | NSHourCalendarUnit | NSMinuteCalendarUnit | NSSecondCalendarUnit;
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NSDateComponents* dc = [currCalendar components:flags fromDate:date];
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zipInfo->tmz_date.tm_sec = [dc second];
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zipInfo->tmz_date.tm_min = [dc minute];
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zipInfo->tmz_date.tm_hour = [dc hour];
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zipInfo->tmz_date.tm_mday = [dc day];
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zipInfo->tmz_date.tm_mon = [dc month] - 1;
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zipInfo->tmz_date.tm_year = [dc 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};
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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, 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), @"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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+ (NSDate *)_dateFor1980 {
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NSDateComponents *comps = [[NSDateComponents alloc] init];
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[comps setDay:1];
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[comps setMonth:1];
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[comps setYear:1980];
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NSCalendar *gregorian = [[NSCalendar alloc] initWithCalendarIdentifier:NSGregorianCalendar];
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NSDate *date = [gregorian dateFromComponents:comps];
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[comps release];
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[gregorian release];
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return date;
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}
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@end
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