text: //
  //  ASIDataDecompressor.h
  //  Part of ASIHTTPRequest -> http://allseeing-i.com/ASIHTTPRequest
  //
  //  Created by Ben Copsey on 17/08/2010.
  //  Copyright 2010 All-Seeing Interactive. All rights reserved.
  //
  
  // This is a helper class used by ASIHTTPRequest to handle inflating (decompressing) data in memory and on disk
  // You may also find it helpful if you need to inflate data and files yourself - see the class methods below
  // Most of the zlib stuff is based on the sample code by Mark Adler available at http://zlib.net
  
  #import <Foundation/Foundation.h>
  #import <zlib.h>
  
  @interface ASIDataDecompressor : NSObject {
  	BOOL streamReady;
  	z_stream zStream;
  }
  
  // Convenience constructor will call setupStream for you
  + (id)decompressor;
  
  // Uncompress the passed chunk of data
  - (NSData *)uncompressBytes:(Bytef *)bytes length:(NSUInteger)length error:(NSError **)err;
  
  // Convenience method - pass it some deflated data, and you'll get inflated data back
  + (NSData *)uncompressData:(NSData*)compressedData error:(NSError **)err;
  
  // Convenience method - pass it a file containing deflated data in sourcePath, and it will write inflated data to destinationPath
  + (BOOL)uncompressDataFromFile:(NSString *)sourcePath toFile:(NSString *)destinationPath error:(NSError **)err;
  
  // Sets up zlib to handle the inflating. You only need to call this yourself if you aren't using the convenience constructor 'decompressor'
  - (NSError *)setupStream;
  
  // Tells zlib to clean up. You need to call this if you need to cancel inflating part way through
  // If inflating finishes or fails, this method will be called automatically
  - (NSError *)closeStream;
  
  @property (assign, readonly) BOOL streamReady;
  @end
  