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File rypper of Package rypper

#!/usr/bin/perl

=head1 NAME

rypper - extension for managing multiple repositories via zypper

=head1 SYNOPSIS

# See complete usage documentation
  rypper --help

# list all disabled repos
  rypper -d

# list all enabled repos with autorefresh off
  rypper -e -R

# list all repos which have anything to do with KDE
  rypper -x kde

# list priority and URIs for all repos whose alias contains 'home:'
  rypper -a home: l -pu

# enable autorefresh on all OpenSUSE Build Service repos
  rypper -u download.opensuse.org -R mr -r

# remove all repos on external USB HDD mounted on /media/disk
  rypper -u /media/disk rr

=head1 DESCRIPTION

rypper is a wrapper around zypper for performing repository
operations in batch.  It allows selection of which
repositories to operate on via a number of different
repository selection specifiers.

The zypper commands which can be wrapped are:

removerepo, rr          Remove specified repository.
  modifyrepo, mr          Modify specified repository.
  refresh, ref            Refresh all repositories.
  clean                   Clean local caches.

Additionally, the zypper pseudo-command 'l' can be used to
list matching repos.  There are a number of options
controlling the output format; run C<rypper --help> for
details.

If no zypper command is provided, it defaults to the 'l'
pseudo-command, trying to intelligently choose which fields to
display, e.g. omitting any which were included in the repo
selection parameters.

=head1 SEE ALSO

L<zypper>

=head1 LICENSE

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 3 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 at L<http://www.gnu.org/licenses/> for
more details.

=head1 AUTHOR

Adam Spiers <rypper@adamspiers.org>

=cut

use strict;
use warnings;

use Getopt::Long;

our $VERSION = '0.23';

(my $ME = $0) =~ s,.*/,,;

my @ALLOWED_ZYPPER_CMDS = qw(removerepo rr modifyrepo mr refresh ref clean);
my @ZYPPER_L_AUTO_COLS = qw(id alias name enabled refresh);
my @DEFAULT_ZYPPER_L_OPTS =
  $ENV{DEFAULT_ZYPPER_L_OPTS} ?
    split /\s+/, $ENV{DEFAULT_ZYPPER_L_OPTS}
  : ('-iaeu');

my $DEFAULT_L_DELIMITER = '  ';

sub usage {
  warn @_, "\n" if @_;

(my $ME = $0) =~ s,.*/,,;

die <<EOUSAGE;
$ME: run a zypper command on selected repositories.
Usage: $ME [<specifiers...>] [<zypper-cmd> [<zypper-args> ...]]

The specifiers determine which repositories the zypper command applies to:
   -d, --disabled          disabled repos
   -e, --enabled           enabled repos
   -r, --refresh           repos with autorefresh enabled
   -R, --no-refresh        repos with autorefresh disabled
   -a, --alias=REGEXP      repos whose alias matches REGEXP
   -n, --name=REGEXP       repos whose name matches REGEXP
   -p, --priority=PRIORITY repos whose priority equals PRIORITY
   -u, --uri=REGEXP        repos whose URI matches REGEXP
   -s, --service=REGEXP    repos whose service matches REGEXP
   -t, --type=REGEXP       repos whose type matches REGEXP
   -x, --match=REGEXP      repos where REGEXP appears in *any* attribute
   -T, --test              dry run: display commands which would be run
Multiple specifiers are ANDed together.  REGEXPs are case-insensitive.

Additionally, the zypper pseudo-command 'l' can be used with
the following options to list matching repos:
   -a, --alias          Include a column for repo aliases
   -e, --enabled        Include a column for repo enablement
   -n, --name           Include a column for repo names
   -p, --priority       Include a column for repo priorities
   -r, --refresh        Include a column for repo auto-refresh
   -s, --service        Include a column for repo services
   -t, --type           Include a column for repo types
   -u, --uri            Include a column for repo URIs
   -d, --delimiter=STR  Change output field delimiter (default '$DEFAULT_L_DELIMITER')
   -N, --no-header      Omit column header
In the absence of options, it defaults to '@DEFAULT_ZYPPER_L_OPTS'
(this can be overridden by the \$DEFAULT_ZYPPER_L_OPTS environment variable).

If no zypper command is provided, it defaults to the 'l'
command, trying to intelligently choose which fields to
display by omitting any which were included in the repo
selection parameters.

Other options:
  -h, --help             Show this help
  -V, --version          Show $ME version
EOUSAGE
}

Getopt::Long::Configure(qw{no_bundling no_ignore_case require_order});

my %opts = ( verbosity => 1 );

usage() if @ARGV == 0;
GetOptions(
  \%opts,
  'disabled|d',
  'enabled|e',
  'refresh|r',
  'no-refresh|R',
  'alias|a=s',
  'name|n=s',
  'priority|p=s',
  'service|s=s',
  'type|t=s',
  'uri|u=s',
  'match|x=s',
  #'verbosity|verbose|v:+',
  'test|T',
  'help|h',
  'version|V',
) or usage();
usage() if $opts{help};

if ($opts{version}) {
  print "$ME version $VERSION\n";
  exit 0;
}

sub get_repo_ids {
  my (@ids, %repos);
  my @FIELDS = qw(id alias name enabled gpg refresh priority type uri service);
  # Thanks to Michal Marek for pointing out that on openSUSE 11.1 at
  # least, zypper's output can sometimes start with a strange escape
  # sequence when localised.  We work-around by setting LC_MESSAGES=C.
  open(ZYPPER, "LC_MESSAGES=C zypper lr -d|")
    or die "Couldn't open(zypper lr -d|): $!\n";
  while (<ZYPPER>) {
    chomp;
    next if /^#/ || /^[-+]{40}/;
    s/^\s+//;
    my @values = split /\s+\|\s+/, $_;
    my %repo = map { $FIELDS[$_] => ($values[$_] || '') } 0 .. $#FIELDS;
    if (repo_matches(%repo)) {
      push @ids, \%repo;
    }
  }
  close(ZYPPER)
    or die "close(zypper lr -d|) failed: $!\n";
  return sort { $a->{id} <=> $b->{id} } @ids;
}

sub repo_matches {
  my %repo = @_;

# Filter out non-matches
  return 0 if $opts{enabled}      and $repo{enabled} ne 'Yes';
  return 0 if $opts{disabled}     and $repo{enabled} ne 'No';
  return 0 if $opts{refresh}      and $repo{refresh} ne 'Yes';
  return 0 if $opts{'no-refresh'} and $repo{refresh} ne 'No';
  return 0 if $opts{alias}        and $repo{alias}   !~ /$opts{alias}/i;
  return 0 if $opts{name}         and $repo{name}    !~ /$opts{name}/i;
  return 0 if $opts{priority}     and $repo{priority} ne $opts{priority};
  return 0 if $opts{service}      and $repo{service} !~ /$opts{service}/i;
  return 0 if $opts{type}         and $repo{type}    !~ /$opts{type}/i;
  return 0 if $opts{uri}          and $repo{uri}     !~ /$opts{uri}/i;

if ($opts{match}) {
    my $combo = join '|', map $repo{$_}, qw(alias name type uri service);
    return 0 unless $combo =~ /$opts{match}/i;
  }

return 1;
}

my @repos = get_repo_ids();

if (@ARGV == 0) {
  my @l_opts = $opts{match} ? () : get_zypper_l_auto_cols();

@ARGV = ('l', @l_opts);
}

if ($ARGV[0] eq 'l') {
  shift @ARGV;
  if (@ARGV == 0) {
    @ARGV = @DEFAULT_ZYPPER_L_OPTS;
  }
  list_repos();
}
else {
  my %ALLOWED_ZYPPER_CMDS = map { $_ => 1 } @ALLOWED_ZYPPER_CMDS;
  if (! $ALLOWED_ZYPPER_CMDS{$ARGV[0]}) {
    die "$ARGV[0] is not a valid zypper repository command.\nRun $ME --help for help.\n";
  }
  foreach my $repo (@repos) {
    my $id = $repo->{id};
    my @cmd = ('zypper', @ARGV, $id);
    if ($opts{test}) {
      print "@cmd\n";
    }
    else {
      system @cmd;
    }
  }
}

sub list_repos {
  my (%l_opts, @cols);
  Getopt::Long::Configure(qw{bundling no_ignore_case});
  GetOptions(
    \%l_opts,
    'delimiter|d=s',
    'no-header|N',
    'alias|a',
    'enabled|e',
    'id|i',
    'name|n',
    'priority|p',
    'refresh|r',
    'service|s',
    'type|t',
    'uri|u',
  ) or usage();
  usage() if @ARGV;
  my %widths;
  for my $col (qw{id alias name enabled refresh type priority uri service}) {
    if ($l_opts{$col}) {
      push @cols, $col;
      my $max_width = 0;
      my @values = ($col, map($_->{$col}, @repos));
      foreach my $width (map length, @values) {
        $max_width = $width if $width > $max_width;
      }
      $widths{$col} = $max_width;
    }
  }
  my $delimiter = $l_opts{delimiter} || $DEFAULT_L_DELIMITER;
  my $format = join($delimiter,
                    map { get_col_format($_, $widths{$_}) } @cols);

unless ($l_opts{'no-header'}) {
    my $header = sprintf $format, @cols;
    my $divider = '-' x length($header);
    $header =~ s/\s+$//;
    print "$header\n$divider\n";
  }
  foreach my $repo (@repos) {
    my $line = sprintf $format, map { $repo->{$_} } @cols;
    $line =~ s/\s+$//;
    print $line, "\n";
  }
}

sub get_col_format {
  my ($name, $max_width) = @_;
  my $type = 's';
  my $align = '-';
  if ($name eq 'id') {
    #$type = 'd';
    $align = '';
  }
  return "%$align$max_width$type";
}

sub get_zypper_l_auto_cols {
  my %auto_opts = map { $_ => 1 } @ZYPPER_L_AUTO_COLS;
  foreach my $opt (@ZYPPER_L_AUTO_COLS) {
    delete $auto_opts{$opt} if $opts{$opt};
  }
  delete $auto_opts{refresh} if $opts{'no-refresh'};
  delete $auto_opts{name} if $auto_opts{alias};
  return map "--$_", keys %auto_opts;
}

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