#!/usr/bin/perl
# Breed 5.4 - manages external viewers for Reed
# Copyright (C)2001-2002 Joe Wreschnig <piman@sacredchao.net>
#
# 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. Read the COPYING file included with
# this program for the full text of the GNU GPL.

use Getopt::Std;
use strict;

my @wrap = ();
my $program = "reed";
my $file;

my %opts; getopts("whvupbqd:j:", \%opts);

if ($opts{'w'}) {
 @wrap = ("|", "fold", "-w", "75", "-s");
 delete $opts{'w'};
}

if ($ARGV[0] !~ m!://!) { # Not a URL
 if (!-r $ARGV[0] && !(keys %opts)) {
  print "breed: error: No valid filenames were found.\n";
  exit 1;
 }
 my (@parts, @newparts);
 if ($ARGV[0] !~ m!^/!) {
  chomp(@parts = (split('/', `pwd`), split('/', $ARGV[0])));
 } else {
  @parts = split('/', $ARGV[0]);
 }

 foreach (@parts) {
  if ($_ eq ".") {
  } elsif ($_ ne "..") {
   push (@newparts, $_);
  } else { pop @newparts; }
 }
 $file = join('/', @newparts);
} else { $file = $ARGV[0]; }

$file =~ s/\\/\\\\/g;
$file =~ s/\"/\\\"/g;

my @opts;
foreach (keys %opts) {
 push @opts, "-$_";
 if ($_ eq 'j' || $_ eq 'd') { push @opts, $opts{$_}; }
}

my @pipe = ('|', $program, @opts, '-f', $file, '-');

if ($file =~ m!://! || $file =~ /\.s?html?$/i) {
 run('lynx', '-dump', $file, @pipe);
} elsif ($file =~ /\.tar\.bz2$/i) {
 run('bunzip2', '-dc', $file, '|', 'tar', 'tvvf', '-', @pipe);
} elsif ($file =~ /\.tar\.gz$/i) {
 run('gunzip', '-dc', $file, '|', 'tar', 'tvvf', '-', @pipe);
} elsif ($file =~ /\.gz$/i || $file =~ /\.z$/i) {
 run("gunzip", "-dc", $file, @pipe);
} elsif ($file =~ /\.lha$/i || $file =~ /\.lhz/i) {
 run("lha", "v", "$file");
} elsif ($file =~ /\.zip$/i || $file =~ /\.jar$/i) {
 run("unzip", "-v", $file, @pipe);
} elsif ($file =~ /\.arj$/i) {	run('unarj', 'l', $file, @pipe); }
elsif ($file =~ /\.bz$/i) {	run("bunzip", '-c', $file, @pipe); }
elsif ($file =~ /\.bz2$/i) {	run("bunzip2", '-dc', $file, @pipe); }
elsif ($file =~ /\.deb$/i) { 	run("dpkg", "--info", $file, @pipe); }
elsif ($file =~ /\.doc$/i) {	run("catdoc", $file, @wrap, @pipe); }
elsif ($file =~ /\.ps$/i) {	run("ps2ascii", $file, @wrap, @pipe); }
elsif ($file =~ /\.pdf$/i) {	run("pdftotext", $file, "-", @wrap, @pipe); }
elsif ($file =~ /\.rpm$/i) {	run("rpm", "-qip", $file, @pipe); }
elsif ($file =~ /\.tar$/i) {	run("tar", "tvvf", "$file", @pipe); }
elsif ($file =~ /\.pdb$/i) {	run("doctotext", "$file", @wrap, @pipe); }
elsif ($file =~ /\.gpg$/i || $file =~ /\.pgp$/i) {
 my $fixed = $file;
 $fixed =~ s!/!_!g;
 run("gpg", "--decrypt", $file, @wrap, '>',
     "/tmp/.reed.gnupg.$fixed.$ENV{USER}", ';', 'chmod','400',
     "/tmp/.reed.gnupg.$fixed.$ENV{USER}", ';', 'reed', @opts, '-f', $file,
     "/tmp/.reed.gnupg.$fixed.$ENV{USER}");
 unlink("/tmp/.reed.gnupg.$fixed.$ENV{USER}");
} elsif (@wrap) {
 run("cat", $file, @wrap, @pipe);
} else { run($program, @opts, $file); }

sub run {
 my $cline = $_[0];
 chomp($cline = `which $cline`);
 if (!$cline) {
  print "breed: error: the required program, $_[0], is not installed.\n";
  exit 1;
 } else { shift; }

 foreach (@_) {
  if (/[^A-Za-z0-9_\-\`]/ && $_ !~ /^[;>|]/) { $cline .= " \"$_\""; }
  else { $cline .= " $_"; }
 }
 system($cline);
}