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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/>.

use strict;
use warnings;
use Term::ANSIColor;

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 [-n] <pattern>\n\n";
	print "Options:\n";
	print "	 -n, --nocolor: turn off coloring\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 formatting variables
my($BLUE, $CYAN, $GREEN, $MAGENTA, $RED, $YELLOW, $BOLD, $RESET);
if ($ARGV[0] eq "--nocolor" || $ARGV[0] eq "-n") {
	shift;
	$BLUE = "";
	$CYAN = "";
	$GREEN = "";
	$MAGENTA = "";
	$RED = "";
	$YELLOW = "";
	$BOLD = "";
	$RESET = "";
} else {
	$BLUE = color('blue');
	$CYAN = color('cyan');
	$GREEN = color('green');
	$MAGENTA = color('magenta');
	$RED = color('red');
	$YELLOW = color('yellow');
	$BOLD = color('bold');
	$RESET = color('reset');
}

# localization
my $LC_INSTALLED = `gettext pacman installed`;

# Print a "repo/pkgname pkgver (groups) [installed]" line.
# We stick to pacman colors.
sub print_pkg {
	my @v = @_;
	print "$RESET$BOLD";
	if ( "$v[0]" eq "local" ) {
		print "$RED";
	} else {
		print "$MAGENTA";
	}
	print "$v[0]/$RESET$BOLD$v[1] $GREEN$v[2]$BLUE$v[3]$CYAN$v[4]$RESET\n";
	print "$v[5]\n";
}

my %allpkgs = ();
my @pkglist = ();

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]);
}

foreach $_ (@syncpkgs) {
	# We grab the following fields: repo, name, ver, group, installed, and
	# desc. We grab leading space for 'group' and 'installed' so that we do not
	# need to test if non-empty when printing.
	my @pkgfields = /^(.*?)\/(.*?) (.*?)( \(.*?\))?( \[.*\])?\n(.*)$/s;
	if(not @pkgfields) {
		# skip any non-matching line and just print it for the user
		print $_, "\n";
		next;
	}
	# since 'group' and 'installed' are optional, we should fill it in if necessary
	$pkgfields[3] = "" if not defined $pkgfields[3];
	$pkgfields[4] = "" if not defined $pkgfields[4];
	# Add each sync pkg by name/ver to a hash table.
	# Any value is good since we only check for existence.
	$allpkgs{$pkgfields[1] . $pkgfields[2]} = 1;
	push (@pkglist, \@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 the same field as before, even the "installed" which is always
	# empty for local searches. This allows us to reserve a cell in @pkgfields.
	my @pkgfields = /^(.*?)\/(.*?) (.*?)( \(.*?\))?( \[.*\])?\n(.*)$/s;
	# skip any non-matching line
	next if not defined $pkgfields[1];
	# check if the package was listed in the sync out
	if (not exists $allpkgs{$pkgfields[1] . $pkgfields[2]}) {
		# since 'group' is optional, we should fill it in if necessary
		$pkgfields[3] = "" if not defined $pkgfields[3];
		$pkgfields[4] = " [$LC_INSTALLED]";
		push (@pkglist, \@pkgfields);
	}
}

foreach (@pkglist) {
	print_pkg (@{$_});
}

#vim: set noet: