XML::Reader Reading XML and providing path information based on a pull-parser
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reader Perl module perl XML XML reader

XML::Reader Description

XML::Reader is a Perl module that provides a simple and easy to use interface for sequentially parsing XML files (so called "pull-mode" parsing) and at the same time keeps track of the complete XML-path.It was developped as a wrapper on top of XML::Parser or XML::Parsepp (while, at the same time, some basic functions have been copied from XML::TokeParser). all modules, XML::Parser, XML::Parsepp and XML::TokeParser allow pull-mode parsing, but do not keep track of the complete XML-Path. Also, the interfaces to XML::Parser, XML::Parsepp and XML::TokeParser require you to distinguish between start-tags, end-tags and text on seperate lines, which, in my view, complicates the interface (although, XML::Reader allows option {filter => 4, mode => 'pyx'} which emulates start-tags, end-tags and text on separate lines, if that's what you want).There is also XML::TiePYX, which lets you pull-mode parse XML-Files (see http://www.xml.com/pub/a/2000/03/15/feature/index.html for an introduction to PYX). But still, with XML::TiePYX you need to account for start-tags, end-tags and text, and it does not provide the full XML-path.By contrast, XML::Reader translates start-tags, end-tags and text into XPath-like expressions. So you don't need to worry about tags, you just get a path and a value, and that's it. (However, should you wish to operate XML::Reader in a PYX compatible mode, there is option {filter => 4, mode => 'pyx'}, as mentioned above, which allows you to parse XML in that way).SYNOPSIS use XML::Reader; my $text = q{< init >n < ?test pi? > t< page node="400" >m < !-- remark -- > r< /page >< /init >}; my $rdr = XML::Reader->new(\$text); while ($rdr->iterate) { printf "Path: %-19s, Value: %s\n", $rdr->path, $rdr->value; }This program produces the following output: Path: /init , Value: n t Path: /init/page/@node , Value: 400 Path: /init/page , Value: m r Path: /init , Value:You can also wrap the call to XML::Reader->new(...) into an eval {...} to check if it succeeded, as follows: my $rdr = eval{ XML::Reader->new('test.xml') } or warn "Can't XML::Reader->new() because $@"; if ($rdr) { # ... do something with $rdr ... } else { # ... do some error handling ... }Product's homepage

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