GzipInputStream

A dead simple subclass of NSInputStream that reads .gz files with reading line by line functionality.

Notes:

• Requires Clang/LLVM 2.0 compiler.
• Only works with gzip file. The -(id)initWithData:(NSData *)data initializer is not supported. Use instead https://code.google.com/p/google-toolbox-for-mac/source/browse/trunk/Foundation/GTMNSData%2Bzlib.h
• Avoid mixing read:maxLength: and readLine calls. It's not prohibited, but readLine calls read:maxLength: behind the scene and stores residual data in a buffer. It would be ideal to have read:maxLength: drain the residual data from buffer first before calling gzread().

Example Usage:

#import "GzipInputStream.h"

GzipInputStream *is = [[GzipInputStream alloc] initWithFileAtPath:@"text.gz"];
[is open];
NSString *line;
while ((line = [is readLine])) {
    // do something with line
}
[is close];
[is release];

Link with libz.dylib and compile :)