source: trunk/gsdl/cgi-bin/webpage_delcol.pl@ 841

#!/usr/local/bin/perl5 -w

###########################################################################
#
# webpage_delcol.pl --
# A component of the Greenstone digital library software
# from the New Zealand Digital Library Project at the 
# University of Waikato, New Zealand.
#
# Copyright (C) 1999 New Zealand Digital Library Project
#
# 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 2 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 for more details.
#
# You should have received a copy of the GNU General Public License
# along with this program; if not, write to the Free Software
# Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
#
###########################################################################

# This program is a webpage wrapper that deletes the named collection

use CGI;
use GSDLHOME;
use Fcntl ':flock';

require util;
require webpageutil;

sub parse_cgiargs
{
    # get arguments
    my $cgi = new CGI;
    my %args = ();
    
    foreach $p ($cgi->param()) 
    { 
    $args{$p} = $cgi->param($p);
    }

    return \%args;
}



sub main
{
    # get arguments
    my $args = parse_cgiargs();

    my $dirname = $args->{'bc1dirname'};
    if (!defined($dirname))
    {
    # directory name derived from the collection name missing
    my $mess = "Directory name derived from the collection name missing.";
    &webpageutil::error_location($args,$mess);
    return;
    }

    my $delete_area = $args->{'bc1deletearea'};

    if ($delete_area eq "all")
    {
    # delete all files
    my $col_dir = &util::filename_cat($ENV{'GSDLHOME'},"collect",$dirname);
    &util::rm_r($col_dir);

    # delete from collections.txt
    my $collist_filename 
        = &util::filename_cat($ENV{'GSDLHOME'},"etc","collections.txt");
    if (open(CLIN,"<$collist_filename"))
    {
        if (flock(CLIN,LOCK_EX))
        {
        my @keep_dirnames = ();
        while (defined($line=<CLIN>))
        {
            chop $line;
            push(@keep_dirnames,$line) if ($line ne $dirname);
        }
        close(CLIN);

        if (open(CLIN,">$collist_filename"))
        {
            print CLIN join("\n",@keep_dirnames), "\n";
        }

        flock(CLIN,LOCK_UN);
        close(CLIN);
        }
        else
        {
        # problem locking file
        my $mess = "Unable to lock collection list configuration";
        $mess .= " file: $collist_filename";
        &webpageutil::error_location($args,$mess);
        return;
        }
    }
    else
    {
        # problem opening file for reading in

        my $mess = "Unable to open for input the collection list";
        $mess .= " configuration file: $collist_filename";
        &webpageutil::error_location($args,$mess);
        return;
    }
    }
    elsif ($delete_area eq "import")
    {

    my $collectdir =  &util::filename_cat($ENV{'GSDLHOME'},"collect",$dirname);
    my $import_dir = &util::filename_cat($collectdir,"import");
    my $archives_dir = &util::filename_cat($collectdir,"archives");
    &util::rm_r($import_dir,$archives_dir);
    &util::mk_dir($import_dir);
    }
    elsif ($delete_area eq "archives")
    {
    my $collectdir =  &util::filename_cat($ENV{'GSDLHOME'},"collect",$dirname);
    my $archives_dir = &util::filename_cat($collectdir,"archives");
    &util::rm_r($archives_dir);
    }
    else
    {
    # unrecoginised area to delete
    my $mess = "Unrecognised area to delete: $delete_area";
    &webpageutil::error_location($args,$mess);
    return;
    }

    my $mess_url = "$args->{'httpbuild'}&bca=mess";
    $mess_url .= "&bc1dirname=$dirname" if ($delete_area ne "all");
    print "Content: text/html\n\n $mess_url&head=_headdone_&mess=_messdonedelcol_\n\n";
    return;

}

&main();