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|
#!/usr/bin/env perl
#
# vim: set ts=4:noet
#
# sboremove
# script to remove an installed SlackBuild
#
# author: Luke Williams <xocel@iquidus.org>
# license: WTFPL <http://sam.zoy.org/wtfpl/COPYING>
use 5.16.0;
use strict;
use warnings FATAL => 'all';
use SBO::Lib;
use Getopt::Long qw(:config bundling);
use File::Basename;
my $self = basename ($0);
sub show_usage () {
print <<EOF
Usage: $self [options] sbo
Options (defaults shown first where applicable):
-h|--help:
this screen.
-v|--version:
version information.
-R|--norequirements:
do not parse requirements.
-a|--alwaysask:
always ask to remove, even if required by other packages on system.
Note: optional dependencies need to be removed separately.
EOF
}
my ($help, $vers, $non_int, $no_reqs, $alwaysask, @excluded);
GetOptions (
'help|h' => \$help,
'version|v' => \$vers,
'norequirements|R' => \$no_reqs,
'nointeractive' => \$non_int,
'alwaysask|a' => \$alwaysask,
);
show_usage and exit 0 if $help;
show_version and exit 0 if $vers;
show_usage and exit 0 unless exists $ARGV[0];
my $inst_names = get_inst_names (get_installed_sbos);
my @remove;
for my $sbo (@ARGV) {
if (get_sbo_location ($sbo)) {
if ($sbo ~~ @$inst_names) {
push @remove, $sbo;
} else {
say "$sbo is not installed";
}
} else {
say "Unable to locate $sbo in the SlackBuilds.org tree."
}
}
my ($remove_queue, %required_by, %warnings, @confirmed);
sub get_requires ($) {
my $location = get_sbo_location (shift);
my $requires = get_from_info (LOCATION => $location, GET => 'REQUIRES')
if $location;
return $requires;
}
# Determine required by for all installed sbo's
sub get_reverse_reqs () {
FIRST: for my $inst (@$inst_names) {
my $requires = get_requires $inst;
next FIRST unless $$requires[0];
for my $req (@$requires) {
unless ( $req eq "%README%" ) {
push @$required_by{$req}, $inst if $req ~~ $inst_names;
}
}
}
}
sub get_required_by ($) {
my $sbo = shift;
my @dep_of;
get_reverse_reqs unless keys %required_by > 0;
if ( $required_by{$sbo} ) {
for my $req_by (@{$required_by{$sbo}}) {
unless ($req_by ~~ @confirmed) {
push @dep_of, $req_by;
}
}
}
return \@dep_of;
}
sub confirm_remove ($) {
my $sbo = shift;
unless ($sbo ~~ @confirmed) {
push @confirmed, $sbo;
}
}
# Determine dependencies & warnings
if ($no_reqs) {
$remove_queue = \@remove;
} else {
$remove_queue = get_build_queue(\@remove, \%warnings);
@$remove_queue = reverse(@$remove_queue);
}
# Check if packages in queue are actually installed on system
my @temp;
if ($inst_names) {
for my $sbo (@$remove_queue) {
if ($sbo ~~ $inst_names) {
push @temp, $sbo;
}
}
$remove_queue = \@temp;
}
# Gather instructions from user
unless ($non_int) {
my ($req_by, $req_count, $cnf_count);
for my $pkg (@$remove_queue) {
$req_by = get_required_by $pkg;
$cnf_count = 0;
for my $val (@$req_by) {
if ( $val ~~ @confirmed ) { $cnf_count++; }
}
my $rootpkg = ($pkg ~~ @remove);
if ($cnf_count == @$req_by or $rootpkg or $alwaysask) {
say $pkg;
if ( @$req_by ) {
say "Required by: " . join(' ', @$req_by);
} else {
unless ($rootpkg) {
#Skip this prompt if the pkg in question was passed by user.
say "It appears $pkg will no longer be required on your system";
}
}
if ( exists $warnings{$pkg} ) {
say "$pkg suggests you view its README before proceeding,";
print "view now? [y] : ";
chomp(my $viewrm = <STDIN>);
if ($viewrm =~ /^[Yy]/) {
print "\n";
my $locrm = get_sbo_location ($pkg);
$locrm .= '/README';
open(README, '<', $locrm) or die "could not open $locrm";
for my $line (<README>) {
print $line;
}
}
}
print "Remove $pkg? [n] : ";
chomp(my $userin = <STDIN>);
if ($userin =~ /^[Yy]/) {
confirm_remove $pkg;
say "* added $pkg to remove queue\n";
} else {
say "* ignoring $pkg\n"
}
}
}
} else {
for my $sbo (@$remove_queue) {
confirm_remove $sbo;
}
}
# Show remove queue
my $remove_count = @confirmed;
if ($remove_count) {
say "Removing $remove_count package(s)";
for my $pkg (@confirmed) {
print "$pkg ";
}
say "\n";
} else {
say 'Nothing to remove.';
exit 0;
}
unless ($non_int) {
print 'Are you sure you want to continue? [n] : ';
unless (<STDIN> =~ /^[Yy]/) {
say 'Exiting.';
exit 0;
}
}
system ("/sbin/removepkg $_") for @confirmed;
say "All operations have completed successfully.";
exit 0;
|
