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Shell Programming and Scripting
perl function call tracking
Post 90634 by thumper on Thursday 24th of November 2005 04:29:14 PM
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LEARN ABOUT DEBIAN
sgmls::refs
Refs(3pm) User Contributed Perl Documentation Refs(3pm) NAME
SGMLS::Refs - Forward reference handling SYNOPSIS
use SGMLS::Refs; To create a new reference-manager object using the file "foo.refs": my $refs = new SGMLS::Refs("foo.refs"); To create a new reference-manager object using the file "foo.refs" and logging changes to the file "foo.log": my $refs = new SGMLS::Refs("foo.refs","foo.log"); To record a reference: $refs->put("document title",$title); To retrieve a reference: $title = $refs->get("document title"); To return the number of references changed since the last run: $num = $refs->changed; To print a LaTeX-like warning if any references have changed: $refs->warn; DESCRIPTION
This library can be used together with the SGMLS package to keep track of forward references from one run to another, like the LaTeX ".aux" files. Each reference manager is an object which reads and then rewrites a file of perl source, with the file name provided by the caller. Example: # Start up the reference manager before the parse. sgml('start', sub { $refs = new SGMLS::Refs("foo.refs"); }); # Warn about any changed references at the end. sgml('end', sub { $refs->warn; }); # Look up the title from the last parse, if available. sgml('<div>', sub { my $element = shift; my $id = $element->attribute(ID)->value; my $title = $refs->get("title:$id") || "[no title available]"; $current_div_id = $id; output "\section{$title} "; }); # Save the title for the next parse. sgml('<head>', sub { push_output('string'); }); sgml('</head>', sub { my $title = pop_output(); my $id = $current_div_id; $refs->put("title:$id",$title); }); AUTHOR AND COPYRIGHT
Copyright 1994 and 1995 by David Megginson, "dmeggins@aix1.uottawa.ca". Distributed under the terms of the Gnu General Public License (version 2, 1991) -- see the file "COPYING" which is included in the SGMLS.pm distribution. SEE ALSO
: SGMLS, SGMLS::Output. perl v5.8.8 2004-02-22 Refs(3pm)