Comments on: ActionScript GZIP compression library

By: Pete

Pete — Fri, 25 Feb 2011 21:35:13 +0000

Never mind, I figured out how to use it.

By: Pete

Pete — Fri, 25 Feb 2011 20:45:36 +0000

Is there no documentation for this?

By: Quick Tip: Compression in Flash at Jozef Ch???•ka's blog

Quick Tip: Compression in Flash at Jozef Ch???•ka's blog — Fri, 07 Jan 2011 13:11:53 +0000

[…] GZIP: ActionScript GZIP compression library […]

By: Writing Flex 3 ByteArray deflate algorithm - Stack Overflow

Writing Flex 3 ByteArray deflate algorithm - Stack Overflow — Wed, 27 Oct 2010 03:51:25 +0000

[…] http://probertson.com/projects/gzipencoder/ […]

By: Paul Robertson

Paul Robertson — Mon, 18 Oct 2010 15:07:44 +0000

@Adnan,
Thanks for letting me know about the broken links. I’ve fixed the ones in the post body.

If you have other questions about how to use the library you may want to start with the Adobe Developer Center article (now that I fixed the link =), and feel free to ask if you have other questions.

By: Adnan

Adnan — Mon, 18 Oct 2010 08:09:30 +0000

Most of the links are broken now. How can I access the data

By: Adding Gzip support for Flex/AIR HTTPService / URLLoader | Skinkers

Adding Gzip support for Flex/AIR HTTPService / URLLoader | Skinkers — Thu, 02 Sep 2010 11:54:47 +0000

[…] of the response to expect binary data. 3) Decode the binary data using H. Paul Robertson’s GZIPEncoder library […]

By: gzip encoding in Adobe AIR

gzip encoding in Adobe AIR — Sat, 22 May 2010 09:21:45 +0000

[…] Ngo?†i ra khi ch??ng ta mu·ªën vi·?øt m·ªôt ch???°ng tr?¨nh n?©n v?† gi·?£i n?©n file theo chu·?©n Gzip b·?±ng AIR, ch??ng ta c?©ng c?? th·ªÉ d??ng th?? vi·ªán c·ªßa Robertson http://probertson.com/projects/gzipencoder/ […]

By: Carlos Bueno: A Dismal Guide to Bandwidth

Carlos Bueno: A Dismal Guide to Bandwidth — Sat, 27 Feb 2010 19:10:34 +0000

[…] If your app sends largish amounts of data upstream (excluding images, which are already compressed), consider implementing client-side compression. It's possible to get 1.5:1 compression with a simple LZW+Base64 function; if you're willing to monkey with ActionScript you could probably do real gzip compression. […]

By: HOW TO COMPRESS FILES AT THE CLIENT END IN ADOBE AIR : 93920

HOW TO COMPRESS FILES AT THE CLIENT END IN ADOBE AIR : 93920 — Thu, 25 Feb 2010 05:01:43 +0000

[…] http://probertson.com/projects/gzipencoder/ […]

By: Paul Robertson

Paul Robertson — Mon, 18 Jan 2010 22:03:36 +0000

Hi Ross,

You can’t directly get a string representation of a ByteArray. (Well, you can try, but chances are some of the characters will be outside the normal character range.) One common way of string-encoding binary data is to convert the ByteArray to a Base64-encoded string. You would then need to decode it to binary again on your server.

Flex SDK includes a Base64Encoder class that will do the Base64 encoding for you. You just pass the ByteArray to your Base64Encoder and then call toString() to get the Base64 string.

By: Ross R

Ross R — Thu, 14 Jan 2010 18:17:07 +0000

I am trying to implement this to compress an XML String which will be sent to JS via ExternalInterface, and then posted to a C# page.

It isn’t working at the moment, because I don’t seem to be able to get a String representation of the compressed ByteArray. For some reason, the JS fires off an error as soon as I pass the byteArray string to it “unterminated string element” or some such.

Any ideas how I can make this work for my purposes?

By: Adobe AIR SOAP WebService Compression « Norvinet's Blog

Adobe AIR SOAP WebService Compression « Norvinet's Blog — Tue, 12 Jan 2010 19:17:14 +0000

[…] http://probertson.com/projects/gzipencoder/ […]

By: Paul Robertson

Paul Robertson — Thu, 13 Aug 2009 16:31:29 +0000

Matias,
The library doesn’t support “split” compressed files. I based the library on the GZIP spec, and it doesn’t say anything about a standard way of splitting files (unless I missed it or they’ve added it in since then). If you know of a standard way of doing it, or you’ve seen another GZIP implementation that provides that support, let me know and I can try to research it and implement it. Otherwise, it doesn’t seem to make sense to implement that as a feature since other GZIP implementations wouldn’t be able to understand how to decompress the files.

By: Matias

Matias — Fri, 07 Aug 2009 14:25:11 +0000

What about split compressed files?

ie:
encoder.compressToFile(source, destination, limitPerFile);

Can I do this?

Any idea?