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#!/usr/bin/perl
# pacsearch - Perform a pacman search using both the local and the sync databases
#
# Copyright (C) 2008-2014 Dan McGee <dan@archlinux.org>
#
# Based off original shell script version:
# Copyright (C) 2006-2007 Dan McGee <dan@archlinux.org>
#
# 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, see <http://www.gnu.org/licenses/>.

#TODO: colors flag on commandline

use strict;
use warnings;

my $myname = 'pacsearch';
my $myver = '@PACKAGE_VERSION@';

sub usage {
	print "$myname (pacman) v$myver\n\n";
	print "Perform a pacman search using both the local and the sync databases.\n\n";
	print "Usage: $myname <pattern>\n\n";
	print "Example: $myname ^gnome\n";
}

sub version {
	printf "%s %s\n", $myname, $myver;
	print "Copyright (C) 2008-2014 Dan McGee <dan\@archlinux.org>\n\n";
	print "Based off original shell script version:\n";
	print "Copyright (C) 2006-2007 Dan McGee <dan\@archlinux.org>\n";
}

if ($#ARGV lt 0 || $ARGV[0] eq "--help" || $ARGV[0] eq "-h") {
	usage;
	if ($#ARGV lt 0) {
		exit 1;
	}
	exit 0;
}

if ($ARGV[0] eq "--version" || $ARGV[0] eq "-V") {
	version;
	exit 0;
}

# define our colors to use when printing
my $CLR1 = "\e[0;34m";
my $CLR2 = "\e[0;32m";
my $CLR3 = "\e[0;35m";
my $CLR4 = "\e[0;36m";
my $CLR5 = "\e[0;31m";
my $CLR6 = "\e[0;33m";
my $CLR7 = "\e[1;36m";
my $INST = "\e[1;31m";
my $BASE = "\e[0m";

# color a "repo/pkgname pkgver" line based on the repository name
sub to_color {
	my $line = shift;
	# get the installed text colored first
	$line =~ s/(\[.*\]$)/$INST$1$BASE/;
	# and now the repo and dealings
	$line =~ s/(^core\/.*)/$CLR1$1$BASE/;
	$line =~ s/(^extra\/.*)/$CLR2$1$BASE/;
	$line =~ s/(^community\/.*)/$CLR3$1$BASE/;
	$line =~ s/(^testing\/.*)/$CLR4$1$BASE/;
	$line =~ s/(^community-testing\/.*)/$CLR5$1$BASE/;
	$line =~ s/(^multilib\/.*)/$CLR6$1$BASE/;
	$line =~ s/(^local\/.*)/$CLR7$1$BASE/;
	# any other unknown repository
	$line =~ s/(^[\w-]*\/.*)/$CLR6$1$BASE/;
	return $line;
}

my %allpkgs = ();

my $syncout = `pacman -Ss '@ARGV'`;
# split each sync search entry into its own array entry
my @syncpkgs = split(/\n^(?=\w)/m, $syncout);
# remove the extra \n from the last desc entry
if ($#syncpkgs >= 0) {
	chomp($syncpkgs[$#syncpkgs]);
}

# counter var for packages, used here and in the query loop too
my $cnt = 0;
foreach $_ (@syncpkgs) {
	# we grab 4 fields here: repo, name/ver, installed, and desc
	my @pkgfields = /^(.*?)\/(.*?) ?(\[.*\])?\n(.*)$/s;
	if(not @pkgfields) {
		# skip any non-matching line and just print it for the user
		print $_, "\n";
		next;
	}
	# since installed is optional, we should fill it in if necessary
	$pkgfields[2] = "" if not defined $pkgfields[2];
	# add a fifth field that indicates original order
	push (@pkgfields, $cnt++);
	# add each sync pkg by name/ver to a hash table for quick lookup
	$allpkgs{$pkgfields[1]} = [ @pkgfields ];
}

my $queryout = `pacman -Qs '@ARGV'`;
# split each querysearch entry into its own array entry
my @querypkgs = split(/\n^(?=\w)/m, $queryout);
# remove the extra \n from the last desc entry
if ($#querypkgs >= 0) {
	chomp ($querypkgs[$#querypkgs]);
}

foreach $_ (@querypkgs) {
	# we grab 4 fields here: repo, name/ver, installed, and desc
	my @pkgfields = /^(.*?)\/(.*?) ?(\[.*\])?\n(.*)$/s;
	# skip any non-matching line
	next if not defined $pkgfields[1];
	# since installed is optional, we should fill it in if necessary
	$pkgfields[2] = "" if not defined $pkgfields[2];
	# check if the package was listed in the sync out
	if (not exists $allpkgs{$pkgfields[1]}) {
		$pkgfields[2] = "[installed]";
		# add a fifth field that indicates original order (after sync)
		push (@pkgfields, $cnt++);
		# add our local-only package to the hash
		$allpkgs{$pkgfields[1]} = [ @pkgfields ];
	}
}

# sort by original order (the fifth field) and print
foreach $_ ( sort{ @{$allpkgs{$a}}[4] <=> @{$allpkgs{$b}}[4] } keys %allpkgs) {
	my @v = @{$allpkgs{$_}};
	my $line = "$v[0]/$v[1] $v[2]";
	$line = to_color($line);
	# print colorized "repo/pkgname pkgver" string with possible installed text
	print "$line\n";
	print "$v[3]\n";
}

#vim: set noet: