+#!/usr/bin/perl
+use warnings;
+use strict;
+use autodie;
+
+my $file = shift @ARGV || die "usage: $0 dump.zpl";
+
+open(my $in, '<', $file);
+
+while(<$in>) {
+ chomp;
+ if ( /~DG(\w):(.+)/ ) {
+ my ( $name, $t,$w ) = split(/,/,$2,4);
+
+ warn "# $_ => [$name] t=$t w=$w\n";
+
+ my $data;
+ read $in, $data, $t;
+
+ my $out;
+ # ZPL decompress
+ my $repeat = 1;
+ foreach my $p ( 0 .. length($data) ) {
+ my $c = substr($data,$p,1);
+ if ( $c eq ',' ) {
+ my $l = ( $w * 2 ) - length($out) % ( $w * 2 );
+ $l = $w * 2 if $l == 0;
+ warn "# $p ZERO-to-EOL $c [$l]\n";
+ $out .= "0" x $l;
+ } elsif ( $c eq ':' ) {
+ $out .= length($out) > $w ? substr($out,-$w*2) : "00" x $w;
+ warn "# $p :\n";
+ } elsif ( $c eq 'z' ) {
+ $repeat += 400;
+ } elsif ( $c ge 'g' && $c le 'y' ) {
+ $repeat += 20 * ( ord($c) - ord('f') );
+ } elsif ( $c ge 'G' && $c le 'Y' ) {
+ $repeat += ord($c) - ord('F');
+ } elsif ( $c =~ m/[0-9A-F]/ ) {
+ if ( $repeat ) {
+ warn "# $p $repeat $c\n";
+ $out .= $c x $repeat;
+ $repeat = 0;
+ } else {
+ warn "# $p hex $c\n";
+ $out .= $c;
+ }
+ } else {
+ warn "ABORT: offset $p data [$c]";
+ last;
+ }
+
+ warn "## $repeat [$c] out = ",length($out);
+ }
+
+
+ my $bitmap = pack('H*', $out);
+ warn "# graphics of ",length($data)," bytes ZPL decompressed to ",length($out)," hex and ", length($bitmap), " bytes bitmap\n";
+ my $pw = $w * 8;
+ my $ph = int(length($bitmap) / $w);
+ print "P4\n$pw $ph\n", substr($bitmap,0,$ph*$w);
+
+ } else {
+ warn "IGNORED: $_\n";
+ }
+}