The easiest solution is probably using module Text::Balanced. Untested code: 
use Text::Balanced qw(extract_codeblock);

# get source code in this variable
my $source = ....;

# regexp finds where method is defined and sets "pos" (see perldoc -f 
+pos),
# than extract_codeblock extracts following codeblock
if($source =~ /public \s+ void \s+ readExternal \s+ \( .*? \) \s+ /gx)
+ {
    my $sub_source = extract_codeblock($source);
    print $sub_source;
}

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--
Ilya Martynov, ilya@iponweb.net
CTO IPonWEB (UK) Ltd
Quality Perl Programming and Unix Support UK managed @ offshore prices - http://www.iponweb.net
Personal website - http://martynov.org

In reply to Re: Extract lines of .java by IlyaM
in thread Extract lines of .java by knobbled

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