#! %%PERL%%
##
#	SWISH++
#	httpindex
#
#	Copyright (C) 1998  Paul J. Lucas
#
#	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.
##

########## You shouldn't have to change anything below this line. #############

require 5.003;

use File::Basename;
use File::Path;
use FileHandle;
use Getopt::Std;
use IPC::Open2;

use lib '%%I_LIB%%';
require WWW;

$me = basename( $0 );

# options from index(1) we accept
$index_opts = 'Ac:C:e:E:f:F:g:h:i:m:M:p:s:t:T:W:';
getopts( "${index_opts}dDv:" ) or die "$me: error in command-line options\n";
die "$me: -d and -D are mutually exclusive\n" if $opt_d && $opt_D;

##
# We have to reconstruct a set of options and their arguments from the options
# actually specified.
##
for ( split( /:/, $index_opts ) ) {
	my $v = eval "\$opt_$_";
	push( @index_opts, "-$_$v" ) if $v;
}

open2( \*INDEX_STDOUT, \*INDEX_STDIN, "%%I_BIN%%/index @index_opts -v4 -" );
while ( <> ) {
	next unless /-> "([^"]+)"/;
	my $path = $1;

	# Got a file from wget: give it to index(1)
	print INDEX_STDIN "$path\n";

	# Record the name of the top-level directory (once).
	( $dir = $path ) =~ s!/.+!! unless $dir;

	# Wait for index(1) to index the file by doing a blocking read.  Skip
	# blank lines and informational lines from index(1) about generating
	# partial indicies.
	do {
		$_ = <INDEX_STDOUT>;
	} while ( /^$|partial/ );

	if ( $opt_d ) {
		my $desc = WWW::extract_description( $path );
		if ( $desc ) {
			if ( open( FILE, ">$path" ) ) {
				print FILE "$desc\n";
				close FILE;
			} else {
				warn "$me: can not overwrite $path\n";
			}
		} else {
			unlink( $path );
		}
	} elsif ( $opt_D ) {
		unlink( $path );
	}

	if ( $opt_v < 4 ) {
		next if /\(skipped:/;
		if ( $opt_v < 3 ) {
			next if /^  /;
			next if $opt_v < 2;
		}
	}
	print;
}
close INDEX_STDIN;

##
# We must actually read the remaining output from index(1) regardless of
# whether we print it otherwise index(1) might block.
##
while ( <INDEX_STDOUT> ) {
	print if $opt_v;
}

rmtree( $dir ) if $opt_D;			# remove (empty) directory tree