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File name : emacs-package-remove

Content :

#!/usr/bin/perl -w

use Errno;
use strict;

my $lib_dir = "/usr/lib/emacsen-common";
my $invoked_by_old_pkg;
my $pkg;

require $lib_dir . "/lib.pl";

umask 0022 or die "emacs-remove: can't set umask, aborting.";

sub usage
{
  my($file_handle) = @_;
  if($invoked_by_old_pkg)
  {
    print $file_handle "Usage: emacs-package-remove FLAVOR\n";
  }
  else
  {
    print $file_handle "Usage: emacs-package-remove --prerm FLAVOR\n";
  }
}

if(scalar(@ARGV) == 1)
{
 $invoked_by_old_pkg = 1;
  $pkg = $ARGV[0];
}
elsif (scalar(@ARGV) == 2 && $ARGV[0] eq '--prerm')
{
  $pkg = $ARGV[1];
}
else
{
  usage(*STDERR{IO});
  exit(1);  
}

validate_add_on_pkg($pkg, 'emacs-package-remove', $invoked_by_old_pkg);

# Silence "single use" warning.
$::installed_package_state_dir = $::installed_package_state_dir;

my @installed_flavors = get_installed_flavors();
my $script = $lib_dir . "/packages/remove/$pkg";

if(!$invoked_by_old_pkg)
{
  foreach my $flavor (@installed_flavors)
  {
    print "Remove $pkg for $flavor\n";
    if(-e $script && (system($script, $flavor) != 0))
    {
      print STDERR "ERROR: remove script from $pkg package failed\n";
      exit(1);
    }
  }
}
else # $invoked_by_old_pkg
{
  print "Remove $pkg for emacs\n";
  ex($script, 'emacs', @installed_flavors) if -e $script;

foreach my $flavor (@installed_flavors)
  {
    print "Remove $pkg for $flavor\n";
    if(-e $script && (system($script, $flavor, @installed_flavors) != 0))
    {
      print STDERR "ERROR: remove script from $pkg package failed\n";
      exit(1);
    }
  }
}

die "ERROR: cannot unlink $::installed_package_state_dir/$pkg: $!, "
    unless (unlink("$::installed_package_state_dir/$pkg") or $!{ENOENT});