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#!/usr/bin/perl
#
# a function that prints a complex variable such that the output is a
# valid perl representation of that variable (does not handle blessed objects)
#
# (c) 2002, Luis E. Garcia Ontanon <luis@ontanon.org>
#
# $Id$
#
# Wireshark - Network traffic analyzer
# By Gerald Combs <gerald@wireshark.org>
# Copyright 2004 Gerald Combs
#
# This program is free software; you can redistribute it and/or
# modify it under the terms of the GNU General Public License
# as published by the Free Software Foundation; either version 2
# of the License, or (at your option) any later version.
#
# This program is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
# GNU General Public License for more details.
#
# You should have received a copy of the GNU General Public License
# along with this program; if not, write to the Free Software
# Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
package V2P;
use strict;
my $_v2p_columns = 120;
sub var2perl { # converts a complex variable reference into perl code
__v2p(0,@_);
}
sub __v2p {
my $d = shift ;
my $i = '';
my $buf = '';
if ( $d gt 0) {
$i .= " " for (0..$d);
}
if (scalar @_ <= 1) {
my $what = ref $_[0];
#~ print "! $_[0] '$what'\n";
if ( $what ) {
if ($what eq 'ARRAY') {
$buf .= "[\n";
$buf .= "$i " . __v2p($d+1,$_) . ",\n" for (@{$_[0]});
$buf =~ s/,\n$//msi;
$buf .= "\n$i]\n";
}
elsif ($what eq 'HASH') {
$buf .= "{\n";
$buf .= "$i " . __v2p($d+1,$_) . " =>" . __v2p($d+1,${$_[0]}{$_}) . ",\n" for (keys %{$_[0]});
$buf =~ s/,\n$//msi;
$buf .= "\n$i}\n";
}
elsif ($what eq 'SCALAR') {
$buf .= "\\" . __v2p($d+1,$_[0]);
}
elsif ($what eq 'REF') {
$buf .= "\\" . __v2p($d+1,\$_);
}
elsif ($what eq 'GLOB') {
$buf .= "*" . __v2p($d+1,\$_);
}
elsif ($what eq 'LVALUE') {
$buf .= 'lvalue';
}
elsif ($what eq 'CODE') {
$buf .= 'sub { "sorry I cannot do perl code"; }';
}
else {
$buf .= "what's '$what'?";
}
} else {
return "undef" unless defined $_[0];
return "''" if $_[0] eq '';
return "'$_[0]'" unless $_[0]=~ /^[0-9]+[\.][0-9]*?$/
or $_[0]=~ /^[0-9]+$/
or $_[0]=~ /^[0-9]*[\.][0-9]+?$/;
return $_[0];
}
} else {
$buf = $i . "( ";
$buf .= "$i , " . __v2p($d+1,$_) for (@_);
$buf .= " )\n";
$buf =~ s/^\( , /\( /;
}
$buf =~ s/\n,/,/msg;
if (length $buf < $_v2p_columns) {
$buf =~ s/\n//msg;
$buf =~ s/$i//msg;
$buf = $i . $buf;
}
return $buf;
}
1;
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