#!./perl
#
# newwais.pl -- WAIS search interface
#
# from wais.pl
#
# Tony Sanders <sanders@bsdi.com>, Nov 1993
#
# Example configuration (in local.conf):
#     map topdir wais.pl &do_wais($top, $path, $query, "database", "title")
#
# this script uses a sneaky feature of Mosaic that interpretes a 
# single text input form with the name 'isindex' (case sensitive) to
# the same as a <ISINDEX>.  On non-mosaic clients, you wind up with an
# additional query
#
# Note that I know even less about perl than the other two people
# who hacked this, so feel free to send hate mail to pjh@netcom.com
# if I did something really bad (or if there is a better way of
# grabbing the filename off the end of a path.
#

# parse disc name from ServerName Environt Variable with this script

do './variables.pl';

$oldLIB = $ENV{"LD_LIBRARY_PATH"};
$ENV{"LD_LIBRARY_PATH"} = "$oldLIB:/usr/ucblib";

#require 'ctime.pl';

&get_request;

$waisq = "./waisq";
$waisd = "/tmp/.wais/wais";


$src = "catalyst_catalog";
$title = "Example Data";
#
# file type map based on file extension, since all file types
# come back type URL
#

%filetype = (
'html', 'HTML File',
);

#
# code
# 

sub send_index {
    print "Content-type: text/html\n\n";
    
    print "<HEAD>\n<TITLE>Index of ", $title, "</TITLE>\n</HEAD>\n";
    print "<BODY bgcolor=\"#DDDDDD\">\n<H1>", $title, "</H1>\n";

    print "This is an index of the information on this server. Please\n";
    print "type a query in the search dialog.\n<P>";
    print "You may use compound searches, such as: <CODE>environment AND cgi</CODE>\n";
    print "<ISINDEX>";
}
sub get_request {

    if ($ENV{'REQUEST_METHOD'} eq "POST") {
        read(STDIN, $request, $ENV{'CONTENT_LENGTH'});
    } elsif ($ENV{'REQUEST_METHOD'} eq "GET" ) {
        $request = $ENV{'QUERY_STRING'};
    }


    @names = &url_decode(split(/[&=]/, $request));
    %rqpairs = @names;
 
}
 
sub url_decode {
 
#       Decode a URL encoded string or array of strings
#               + -> space
#               %xx -> character xx
 
 
    foreach (@_) {
        tr/+/ /;
        s/%(..)/pack("c",hex($1))/ge;
    }
    @_;
}
 

sub do_wais {
#    local($top, $path, $query, $src, $title) = @_;

# strip the escape off of *'s
    for (@ARGV){s/\\//g};

    local(@query) = $rqpairs{"isindex"};;

    local($pquery) = join(" ", @query);
    local($nquery) = $pquery;
    $nquery =~ tr/[A-Z]/[a-z]/;
    if (!(($nquery =~ / and /) || ($nquery =~ / or /)))
    {
       $nquery =~ s/ //g;
    }
#
# grab a wais source if there is one
#

    local($test) = $ENV{'PATH_INFO'};
    if ($test)
    {
	$test =~ s/\///;
        $src = "catalyst_catalog";
        $title = $test;
    }

    close STDERR;
    open(STDERR, ">/dev/null");

    print "Content-type: text/html\n\n";

    $ENV{'HOME'} = "/";
	
    open(WAISQ, "-|") || exec ($waisq, "-c", $waisd, "-m", 100,
                                "-f", "-", "-S", "$src.src", "-g", $nquery);

    print "<HEAD>\n<TITLE>Search of ", "Catalyst Catalog $disc_rest", "</TITLE>\n</HEAD>\n";
    print "<img src=\"/.wais/images/goto_home.gif\">\n";
    print "<BODY bgcolor=\"#DDDDDD\">\n<H1>Catalyst Catalog on $disc_name $disc_rest</H1>\n";

    print "<HR><FORM method=\"POST\" action=\"/cgi-bin/newwais.pl/$src\">\n";
    print "Enter keyword(s):\n";
#    print "<input name=\"isindex\" value=\"@query\" size=30></FORM><HR>\n";
    print "<input name=\"isindex\" value=\"$pquery\" size=30></FORM><HR>\n";

    print "$title contains the following\n";
    print "items relevant to <B>\`$pquery\':</B><P>\n";
    print "<center>";
    print "<table border=5>";
    print "<DL>\n";
    print "<th> Document Matched</th>";
    print "<tr>\n";


    local($hits, $score, $headline, $lines, $bytes, $type, $date);

    print "<OL>";
    while (<WAISQ>) {
        /:score\s+(\d+)/ && ($score = $1);
        /:number-of-lines\s+(\d+)/ && ($lines = $1);
        /:number-of-bytes\s+(\d+)/ && ($bytes = $1);
        /:type "(.*)"/ && ($type = $1);
        /:headline "(.*)"/ && ($headline = $1);         # XXX
        /:date "(\d+)"/ && ($date = $1, $hits++, &docdone);
    }
    print "</table>";
    print "</center>";

    print "</OL>";
    close(WAISQ);
    print "</DL>\n";

    if ($hits == 0) {
        print "Nothing found.\n";
    }
    print "</BODY>\n";
}


sub docdone {

    if ($headline =~ /Search produced no result/) {
        print "<HR>";
	print "<h1>Search produced no result.</h1>";
    } else {
        $docname = $headline;
	$docname =~ s/\.([^.]*)$//;
	$extension= $1;
	$docname =~ s/\/([^\/]*)$//;
	$docname = $1;
        print "<td><LI><A HREF=\"$headline\"><B>$docname</B></A></td>\n";
	print "<tr>";
    }
    $score = $headline = $lines = $bytes = $type = $date = '';
}

eval '&do_wais';
