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|
#!/usr/bin/perl
#
# vim: set ts=4:noet
#
# sboconfig
# script to handle sbotools configuration
#
# authors: Jacob Pipkin <j@dawnrazor.net>
# 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 File::Basename;
use Getopt::Long;
use File::Copy;
use File::Path qw(make_path);
use File::Temp qw(tempfile);;
my $self = basename($0);
sub show_usage {
print <<EOF
Usage: $self [options] [arguments]
Options:
-h: this screen.
-v: version information.
-l: show current options.
Config options (defaults shown):
-c|--clean FALSE:
NOCLEAN: if TRUE, do NOT clean up after building by default.
-d|--distclean FALSE:
DISTCLEAN: if TRUE, DO clean distfiles by default after building.
-j|--jobs FALSE:
JOBS: numeric -j setting to feed to make for multicore systems.
-p|--pkg-dir FALSE:
PKG_DIR: set a directory to store packages in.
-s|--sbo-home /usr/sbo:
SBO_HOME: set the SBo directory.
-o|--local-overrides FALSE:
LOCAL_OVERRIDES: a directory containing local overrides.
-V|--slackware-version FALSE:
SLACKWARE_VERSION: use the SBo repository for this version.
EOF
}
my %options;
GetOptions(\%options, 'help|h', 'version|v', 'list|l', 'noclean|c=s',
'distclean|d=s', 'jobs|j=s', 'pkg-dir|p=s', 'sbo-home|s=s',
'local-overrides|o=s', 'slackware-version|V=s');
show_usage() and exit 0 if exists $options{help};
show_version() and exit 0 if exists $options{version};
my %valid_confs = (
noclean => 'NOCLEAN',
distclean => 'DISTCLEAN',
jobs => 'JOBS',
'pkg-dir' => 'PKG_DIR',
'sbo-home' => 'SBO_HOME',
'local-overrides' => 'LOCAL_OVERRIDES',
'slackware-version' => 'SLACKWARE_VERSION',
);
my %params = (
NOCLEAN => 'c|--noclean',
DISTCLEAN => 'd|--distclean',
JOBS => 'j|--jobs',
PKG_DIR => 'p|--pkg-dir',
SBO_HOME => 's|--sbo-home',
LOCAL_OVERRIDES => 'o|--local-overrides',
SLACKWARE_VERSION => 'V|--slackware-version',
);
if (exists $options{list}) {
my @keys = sort {$a cmp $b} keys %config;
say "sboconfig -$params{$_}:\n $_=$config{$_}" for @keys;
exit 0;
}
show_usage() and exit 0 unless keys %options > 0;
# setup what's being changed, sanity check.
my %changes;
for my $key (keys %valid_confs) {
my $value = $valid_confs{$key};
$changes{$value} = $options{$key} if exists $options{$key};
}
my $warn = 'You have provided an invalid parameter for';
if (exists $changes{NOCLEAN}) {
usage_error("$warn -c") unless $changes{NOCLEAN} =~ /^(TRUE|FALSE)$/;
}
if (exists $changes{DISTCLEAN}) {
usage_error("$warn -d") unless $changes{DISTCLEAN} =~ /^(TRUE|FALSE)$/;
}
if (exists $changes{JOBS}) {
usage_error("$warn -j") unless $changes{JOBS} =~ /^(\d+|FALSE)$/;
}
if (exists $changes{PKG_DIR}) {
usage_error("$warn -p") unless $changes{PKG_DIR} =~ qr#^(/|FALSE$)#;
}
if (exists $changes{SBO_HOME}) {
usage_error("$warn -s") unless $changes{SBO_HOME} =~ qr#^/#;
}
if (exists $changes{LOCAL_OVERRIDES}) {
usage_error("$warn -o") unless $changes{LOCAL_OVERRIDES} =~ qr#^(/|FALSE$)#;
}
if (exists $changes{SLACKWARE_VERSION}) {
usage_error("$warn -V") unless $changes{SLACKWARE_VERSION} =~ m/^(\d+\.\d+|FALSE)$/;
}
# safely modify our conf file; write its contents to a temp file, modify the
# temp file, write the contents of the temp file back to the conf file
# TODO: if multiple options are provided to this script, this sub should write
# them all at once, instead of only a single one and having to call it once for
# each option specified to the script.
sub config_write {
exists $_[1] or script_error('config_write requires two arguments.');
my ($key, $val) = @_;
if (! -d $conf_dir) {
mkdir $conf_dir or usage_error("Unable to create $conf_dir. Exiting.");
}
if (-f $conf_file) {
my $tempfh = tempfile(DIR => $tempdir);
my ($conffh, $exit) = open_read($conf_file);
if ($exit) {
warn $conffh;
exit $exit;
}
my $conftents = do {local $/; <$conffh>};
print {$tempfh} $conftents;
# tie the temp file so that if $key is already there, we just change
# that line and untie it
tie my @temp, 'Tie::File', $tempfh;
my $has;
my $regex = qr/\A\Q$key\E=/;
FIRST: for my $tmpline (@temp) {
$has++, $tmpline = "$key=$val", last FIRST if $tmpline =~ $regex;
}
untie @temp;
# otherwise, append our new $key=$value pair
print {$tempfh} "$key=$val\n" unless $has;
# then overwrite the conf file with the contents of the temp file
seek $tempfh, 0, 0;
my $contents = do {local $/; <$tempfh>};
close $conffh;
($conffh, $exit) = open_fh($conf_file, '>');
if ($exit) {
warn $conffh;
exit $exit;
}
print {$conffh} $contents or return();
close $conffh, close $tempfh;
} else {
# no config file, easiest case of all.
my ($fh, $exit) = open_fh($conf_file, '>') or return();
if ($exit) {
warn $fh;
exit $exit;
}
print {$fh} "$key=$val\n";
close $fh;
}
return 1;
}
for my $key (keys %changes) {
my $value = $changes{$key};
say "Setting $key to $value...";
config_write($key, $value);
}
exit 0;
|
