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List: perl-xml
Subject: [ANNOUNCE] XML-Filter-DataIndenter-0.1.tar.gz
From: Barrie Slaymaker <barries () slaysys ! com>
Date: 2003-01-14 4:28:53
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POD below. This takes data oriented XML and formats it with very little
overhead and as little event caching as I could get away with. It's not
as smart as XML::Filter::Reindent, but it's much less complex and is SAX2
compliant. X::F::Reindent works on mixed-mode documents, this one's purely
for data oriented XML (it'll die() if it sees both an element and
non-whitespace characters in the same element).
Feedback?
Thanks,
Barrie
NAME
XML::Filter::DataIndenter - SAX2 Indenter for data oriented XML
SYNOPSIS
use XML::Filter::DataIndenter;
use XML::SAX::Machines qw( Pipeline );
Pipeline( XML::Filter::DataIndenter => \*STDOUT );
DESCRIPTION
ALPHA CODE ALERT: This is the first release. Feedback and patches
welcome.
In data oriented XML, leaf elements (those which contain no elements)
contain only character content, all other elements contain only child
elements and ignorable whitespace. This filter consumes all whitespace
not in leaf nodes and replaces it with whitespace that indents all
elements. Character data in leaf elements is left unmolested.
This filter assumes you're emitting data oriented XML. It will die if it
sees non-whitespace character data outside of a leaf element. It also
dies if it sees start-tag / end-tag mismatch, just as a service to the
programmer.
Processing instructions and comments are indented as though they were
leaf elements except when they occur in leaf elements.
Example:
This document:
<a><?A?>
<!--A--><b><?B?><!--B-->B</b>
<!--A-->
</a>
gets reindented as:
<a>
<?A?>
<!--A-->
<b><?B?><!--B-->B</b>
<!--A-->
</a>
(plus or minus a space in each PI, depending on your XML writer).
LIMITATIONS
Considers only [\r\n \t] to be whitespace; does not think about the
broader Unicode definition of whitespace. This will be addressed when
time and need permit.
COPYRIGHT
Copyright 2003, R. Barrie Slaymaker, Jr., All Rights Reserved
LICENSE
You may use this module under the terms of the BSD, Artistic, oir GPL
licenses, any version.
AUTHOR
Barrie Slaymaker <barries@slaysys.com>
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