hexpat-iteratee: Chunked XML parsing using iteratees

[ bsd3, library, xml ] [ Propose Tags ]
Versions 0.1, 0.2, 0.3, 0.4, 0.5, 0.6
Dependencies base (>=3 && <5), bytestring, containers, extensible‑exceptions (==0.1.*), hexpat (>=0.13), iteratee (>=0.3), List (>=0.3), mtl, parallel [details]
License BSD-3-Clause
Copyright (c) 2010 Stephen Blackheath <http://blacksapphire.com/antispam/>
Author Stephen Blackheath (blackh)
Maintainer http://blacksapphire.com/antispam/
Category XML
Home page http://haskell.org/haskellwiki/Hexpat/
Source repo head: darcs get http://code.haskell.org/hexpat-iteratee/
Uploaded by StephenBlackheath at Wed May 5 13:02:15 UTC 2010
Distributions NixOS:0.6
Downloads 2002 total (18 in the last 30 days)
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This package provides chunked XML parsing using iteratees. It is especially suited to implementing XML-based socket protocols, but is useful wherever lazy parsing is needed on production systems where you can't tolerate the problems that come with Haskell's lazy I/O.

The XML is presented as a lazy tree, and is processed by a handler implemented using a special HandlerT monad. This monad is suspended whenever it tries to read a part of the tree that hasn't been parsed yet, and continued as soon as it is available. The resulting code looks and functions very much as if you were using lazy I/O, only without the associated problems. The handler monad may have effects.

Background: Haskell's lazy I/O can be problematic in some applications because it doesn't handle I/O errors properly, and you can't predict when it will clean up its resources, which could result in file handles running out.




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