02-28-2012
Extract strings within XML file between different delimiters
Good afternoon!
I have an XML file from which I want to extract only certain elements contained within each line. The problem is that the format of each line is not exactly the same (though similiar). For example, oa_var will be in each line, however, there may be no value or other variables present in some lines (but not others).
So, given the example lines below:
<ex1 oa_var="some_var_name1">val1</ex1>
<ex2 oa_var="some_var_name2" abc="dont_care">val2</ex2>
<ex3 oa_var="some_var_name3" />
<ex4 oa_var="some_var_name4">val4</ex4>
I want to only extract the bolded items (note ex3 doesn't have a value).
some_var_name1 val1
some_var_name2 val2
some_var_name3
some_var_name4 val4
I am open to using shell | awk | sed | perl | python (in that order).
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LEARN ABOUT DEBIAN
graphviz::xml
GraphViz::XML(3pm) User Contributed Perl Documentation GraphViz::XML(3pm)
NAME
GraphViz::XML - Visualise XML as a tree
SYNOPSIS
use GraphViz::XML;
my $graph = GraphViz::XML->new($xml);
print $g->as_png;
DESCRIPTION
This module makes it easy to visualise XML as a tree. XML is hard for humans to grasp, especially if the XML is computer-generated. This
modules aims to visualise the XML as a graph in order to make the structure of the XML clear and to aid in understanding the XML.
XML elements are represented as diamond nodes, with links to elements within them. Character data is represented in round nodes.
Note that the XML::Twig module should be installed.
METHODS
new
This is the constructor. It takes one mandatory argument, which is the XML to be visualised. A GraphViz object is returned.
my $graph = GraphViz::XML->new($xml);
as_*
The XML can be visualised in a number of different graphical formats. Methods include as_ps, as_hpgl, as_pcl, as_mif, as_pic, as_gd,
as_gd2, as_gif, as_jpeg, as_png, as_wbmp, as_ismap, as_imap, as_vrml, as_vtx, as_mp, as_fig, as_svg. See the GraphViz documentation for
more information. The two most common methods are:
# Print out a PNG-format file
print $g->as_png;
# Print out a PostScript-format file
print $g->as_ps;
BUGS
GraphViz tends to reorder the nodes. I hope to find a work around soon (possibly with ports).
AUTHOR
Leon Brocard <acme@astray.com>
COPYRIGHT
Copyright (C) 2001, Leon Brocard
This module is free software; you can redistribute it or modify it under the same terms as Perl itself.
perl v5.14.2 2012-04-02 GraphViz::XML(3pm)