Possible Duplicate:
How to uncompress a gzip file and write that out to an uncompressed file, on iPhone
Im trying to unzip a .gz sqlite file in iOS, but until now I did not found a good library for that.
I tried SSZipArchive like that:
path = [[NSBundle bundleForClass:[self class]] pathForResource:@"test.sqlite" ofType:@"gz"];
NSString *documentsDir = (NSString *)[NSSearchPathForDirectoriesInDomains(NSDocumentDirectory, NSUserDomainMask, YES) lastObject];
destination = documentsDir;
NSError *error;
BOOL success = [SSZipArchive unzipFileAtPath:path toDestination:destination overwrite:YES password:nil error: &error];
That works for a zipped sqlite database file, but not if I gzip the sqlite database. Then everytime the error "cant open zip file" is returning.
Then I tried this GZIP approach from https://github.com/nicklockwood/GZIP.
I used the code like that:
path = [[NSBundle bundleForClass:[self class]] pathForResource:@"test.sqlite" ofType:@"gz"];
NSString *documentsDir = (NSString *)[NSSearchPathForDirectoriesInDomains(NSDocumentDirectory, NSUserDomainMask, YES) lastObject];
destination = [documentsDir stringByAppendingPathComponent:@"test.sqlite"];
NSData *gzData = [NSData dataWithContentsOfFile:path];
NSData *ungzippedData = [gzData gunzippedData];
return [ungzippedData writeToFile:destination atomically:YES];
After that I got a file named test.sqlite in my Documents folder, but if I try to open it, it fails because the fail is corrupt.
And my last try was ZipArchive from http://code.google.com/p/ziparchive/.
I used it like that:
ZipArchive* za = [[ZipArchive alloc] init];
if( [za UnzipOpenFile:path] ){
BOOL success = [za UnzipFileTo:destination overWrite:YES];
[za UnzipCloseFile];
return success;
}
But this also cant open the file.
Can someone help me?
