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Full Discussion: Extract value inside <text> tag for a particular condition.
Top Forums Shell Programming and Scripting Extract value inside <text> tag for a particular condition. Post 302270567 by summer_cherry on Monday 22nd of December 2008 07:46:36 AM
Old 12-22-2008
hi,

you may use perl ASX to process it.

input:
Code:
<?xml version="1.0"?>
<data>
<text top="246" left="160" width="84" height="16" font="3">Business purpose</text>
<text top="260" left="506" width="220" height="16" font="3">giving the right information and new insights </text>
<text top="296" left="160" width="67" height="16" font="3">Characteristic</text>
<text top="296" left="278" width="111" height="16" font="3">Operational processing</text>
<text top="296" left="506" width="120" height="16" font="3">Informational processing</text>
<text top="318" left="160" width="55" height="16" font="3">Orientation</text>
<text top="318" left="278" width="56" height="16" font="3">Transaction</text>
<text top="318" left="506" width="42" height="16" font="3">Analysis</text>
<text top="340" left="160" width="43" height="16" font="3">Function</text>
</data>

code:

Code:
package Leo;
use XML::SAX::Base;
@ISA=qw(XML::SAX::Base);
sub start_document{
	my $self=shift;
	my $doc=shift;
}
sub start_element{
	my $self=shift;
	my $element=shift;   
	foreach my $key (keys %{$element->{Attributes}}){
		my $attr=$element->{Attributes}->{$key};
		$flag=1 if ($attr->{Name} eq "left" && $attr->{Value}==160);
	}
}
sub characters{
	my $self=shift;
	my $char=shift;
	if ($flag==1){
		print "<P>",$char->{Data},"</P>\n";
		$flag=0;
	}	
}
1

Code:
use XML::SAX;
use Leo;
$parser=XML::SAX::ParserFactory->parser(Handler=>Leo->new);
$parser->parse_uri("a.txt");

result:
Code:
you expectation

 

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LEARN ABOUT SUSE

xml::libxml::sax

XML::LibXML::SAX(3)					User Contributed Perl Documentation				       XML::LibXML::SAX(3)

NAME

       XML::LibXML::SAX - XML::LibXML direct SAX parser

DESCRIPTION

       XML::LibXML provides an interface to libxml2 direct SAX interface. Through this interface it is possible to generate SAX events directly
       while parsing a document. While using the SAX parser XML::LibXML will not create a DOM Document tree.

       Such an interface is useful if very large XML documents have to be processed and no DOM functions are required. By using this interface it
       is possible to read data stored within a XML document directly into the application data structures without loading the document into
       memory.

       The SAX interface of XML::LibXML is based on the famous XML::SAX interface. It uses the generic interface as provided by XML::SAX::Base.

       Additionally to the generic functions, which are only able to process entire documents, XML::LibXML::SAX provides parse_chunk(). This
       method generates SAX events from well balanced data such as is often provided by databases.

       NOTE: At the moment XML::LibXML provides only an incomplete interface to libxml2's native SAX implementation. The current implementation is
       not tested in production environment. It may causes significant memory problems or shows wrong behaviour. If you run into specific problems
       using this part of XML::LibXML, let me know.

AUTHORS

       Matt Sergeant, Christian Glahn, Petr Pajas

VERSION

       1.70

COPYRIGHT

       2001-2007, AxKit.com Ltd.

       2002-2006, Christian Glahn.

       2006-2009, Petr Pajas.

perl v5.12.1							    2009-10-07						       XML::LibXML::SAX(3)
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