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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: $self [options] sbo
Options (defaults shown first where applicable):
-h|--help:
this screen.
-v|--version:
version information.
-a|--alwaysask:
always ask to remove, even if required by other packages on system.
Note: optional dependencies need to be removed separately.
EOF
}
my ($help, $vers, $non_int, $alwaysask, @excluded);
GetOptions(
'help|h' => \$help,
'version|v' => \$vers,
'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);
# ensure that all provided arguments are valid sbos
my @arguments;
for my $sbo (@ARGV) {
if (get_sbo_location($sbo)) {
$sbo ~~ @$inst_names ? push @arguments, $sbo
: say "$sbo is not installed";
} else {
say "Unable to locate $sbo in the SlackBuilds.org tree."
}
}
# one array of each cli-specified sbo to remove...
my @sbos = @arguments;
# wrapper to pull the list of requirements for a given sbo
# TODO: look at moving this into Lib.pm
sub get_requires($) {
my $location = get_sbo_location(shift);
return get_from_info(LOCATION => $location, GET => 'REQUIRES');
}
# and another array to hold the requirements for each.
my @sbo_reqs;
push @sbo_reqs, get_requires $_ for @sbos;
# clean the req listings of anything specified on the command line.
for my $reqs (@sbo_reqs) {
my @remove;
for my $key (keys @$reqs) {
push @remove, $key if $$reqs[$key] ~~ @sbos;
}
for my $rem (@remove) {
splice(@$reqs, $rem, 1);
$_-- for @remove;
}
}
# get a two reversed copies of the req list for removing dupes
my @rev_reqs;
push @rev_reqs, [reverse @$_] for reverse @sbo_reqs;
my @rev_copy = @rev_reqs;
# remove any dupes, leaving last instance of each.
for my $list (@rev_copy) {
for my $item (@$list) {
my $found = 0;
for my $list2 (@rev_reqs) {
my @remove;
for my $key (keys @$list2) {
if ($$list2[$key] eq $item) {
push @remove, $key if $found;
$found++;
}
}
for my $rem (@remove) {
splice(@$list2, $rem, 1);
$_-- for @remove;
}
}
}
}
# make @sbo_reqs hold the de-duped list of reqs.
@sbo_reqs = ();
push @sbo_reqs, [reverse @$_] for reverse @rev_reqs;
my ($remove_queue, %required_by, %warnings, @confirmed);
# 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 ~~ $inst_names;
}
}
}
}
get_reverse_reqs;
sub get_required_by($) {
my $sbo = shift;
my @dep_of;
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;
push @confirmed, $sbo unless $sbo ~~ @confirmed;
}
# Determine dependencies & warnings
#if ($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) {
push @temp, $sbo if $sbo ~~ @$inst_names;
}
$remove_queue = \@temp;
}
if ($non_int) {
confirm_remove $_ for @$remove_queue;
goto CONFIRMED;
}
for my $remove (@$remove_queue) {
my $required_by = get_required_by $remove;
}
CONFIRMED:
# 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;
|
