261 lines
		
	
	
	
		
			7 KiB
		
	
	
	
		
			Perl
		
	
	
		
			Executable file
		
	
	
	
	
			
		
		
	
	
			261 lines
		
	
	
	
		
			7 KiB
		
	
	
	
		
			Perl
		
	
	
		
			Executable file
		
	
	
	
	
#!/usr/bin/perl
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#
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# mail-archive.pl  --  a CGI interface to a wais indexed maling list archive.
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#
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# Origin:
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#   Tony Sanders <sanders@bsdi.com>, Nov 1993
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#
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# Hacked beyond recognition by:
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#   John Fieber <jfieber@cs.smith.edu>, Nov 1994
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#
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# Format the mail messages a little nicer.
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# Add code to check database status before searching.
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#   John Fieber <jfieber@indiana.edu>, Aug 1996
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#
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# Disclaimer:
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#   This is pretty ugly in places.
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#
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# $FreeBSD$
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$server_root = '/usr/local/www';
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$waisq = "/usr/local/www/bin/waisq";
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$sourcepath = "$server_root/db/index";
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$hints = "/search/searchhints.html"; 
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$searchpage = '/search/search.html';   
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$myurl = $ENV{'SCRIPT_NAME'};
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require "open2.pl";
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require "cgi-lib.pl";
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require "cgi-style.pl";
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@months = ('Jan', 'Feb', 'Mar', 'Apr', 'May', 'Jun', 'Jul', 'Aug', 'Sep', 'Oct', 'Nov', 'Dec');
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sub do_wais {
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    &ReadParse;
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    @FORM_words = split(/ /, $in{"words"});
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    @FORM_source = split(/\0/, $in{"source"});
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    $FORM_max = $in{"max"};
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    $FORM_docnum = $in{"docnum"};
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    if ($#FORM_words < 0) {
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    	print &html_header("Mail Archive Search") .
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    	    "<p>No search term given.";
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    	print "<p>\nPlease return to the " .
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    	    "search page and fill out the 'Search for' field!\n";
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	print &html_footer;
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    	exit 0;
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    }
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    @AVAIL_source = &checksource(@FORM_source);
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    if ($#FORM_source != $#AVAIL_source) {
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    	$j = 0;
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    	$k = 0;
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    	foreach $i (0 .. $#FORM_source) {
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    	    if ($FORM_source[$i] ne $AVAIL_source[$j]) {
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    	    	$badsource[$k] = $FORM_source[$i];
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    	    	$k++;
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    	    } else {
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    	    	$j++;
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    	    }
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    	}
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    	$badsource = join("</em>, <em>", @badsource);
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    	$badsource =~ s/,([^,]*)$/ and $1/;
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    	if ($#FORM_source - $#AVAIL_source > 1) {
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    	    $availmsg = "<p>[The <em>$badsource</em> archives are currently unavailable.]</p>";
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    	} else {
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    	    $availmsg = "<p>[The <em>$badsource</em> archive is currently unavailable.]</p>";
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    	}
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    }
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    if ($#AVAIL_source < 0) {
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    	$i = join("</em>, <em>", @FORM_source);
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    	$i =~ s/,([^,]*)$/ and $1/;
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    	print &html_header("Mail Archive Search") .
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    	    "<p>None of the archives you requested (<em>$i</em>) are " .
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		" available at this time.</p>\n";
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    	print "<p>Please try again later, or return to the " .
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    	    "search page and select a different archive.</p>\n";
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	print &html_footer;
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    	exit 0;
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    }
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    # Now we formulate the question to ask the server
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    foreach $i (@AVAIL_source) {
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	$w_sources .=  "(:source-id\n        :filename \"$i.src\"\n        )  ";
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    }
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    $w_question = "\n  (:question 
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    :version  2 
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    :seed-words \"@FORM_words\"
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    :relevant-documents 
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    (  )
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    :sourcepath \"$sourcepath/:\"
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    :sources 
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    (  $w_sources      )
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    :maximum-results  $FORM_max 
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    :result-documents 
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    (  ) 
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    )\n";
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    #
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    # First case, no document number so this is a regular search
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    #
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    print &html_header("Search Results");
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    print $availmsg;
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    if ($#AVAIL_source > 0) {
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	$src = join("</em>, <em>", @AVAIL_source);
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	$src =~ s/,([^,]*)$/ and $1/;
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	print "<p>The archives <em>$src</em> contain ";
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    }
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    else {
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	print "The archive <em>@AVAIL_source</em> contains ";
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    }
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    print " the following items relevant to \`@FORM_words\':\n";
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    print "<OL>\n";
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    &open2(WAISOUT, WAISIN, $waisq, "-g");
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    print WAISIN $w_question;
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    local(@mylist) = ();
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    local($hits, $score, $headline, $lines, $bytes, $docid, $date, $file);
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    while (<WAISOUT>) {
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	/:original-local-id.*#\(\s+([^\)]*)/ && 
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	    ($docid = pack("C*", split(/\s+/, $1)),
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	     $docid =~ s/\s+/+/g);
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	/:score\s+(\d+)/ && ($score = $1);
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	/:filename "(.*)"/ && ($file = $1);
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	/:number-of-lines\s+(\d+)/ && ($lines = $1);
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	/:number-of-bytes\s+(\d+)/ && ($bytes = $1);
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	/:headline "(.*)"/ && ($headline = $1, 
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			       $headline =~ s/[Rr]e://);  # XXX
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	/:date "(\d+)"/ && ($date = $1, $hits++, 
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			    push(@mylist, join("\t", $date, $headline, $docid, 
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					       $bytes, $lines, $file, $score, $hits)));
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    }
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    if ($in{'sort'} eq "date") {
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	foreach (reverse sort {$a <=> $b} @mylist) {
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	    ($date, $headline, $docid, $bytes, $lines, 
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	     $file, $score, $hits) = split("\t");
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	    &docdone;
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	}
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    } elsif ($in{'sort'} eq "subject") {
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	local(@a, @c, $b, $d);
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	foreach (@mylist) {
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	    @a = split("\t");
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	    $b = $a[0];
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	    # swap date and subject
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	    if ($a[1] =~ /(^[^:]+)(Re:.*)/) {
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		$a[0] = "$2\t$1";
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	    } else {
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		$a[0] = "$a[1]\t.";
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	    }
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	    $a[1] = $b;
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	    push(@c, join("\t", @a));
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	} 
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	local($subject, $author);
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	foreach (sort {$a cmp $b} @c) {
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	    ($subject, $author, $date, $docid, $bytes, 
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	     $lines, $file, $score, $hits) = split("\t");
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	    $headline = $author . $subject;
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	    &docdone;
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	}
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    } elsif ($in{'sort'} eq "author") {
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	local(@a, @c, $b);
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	foreach (@mylist) {
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	    @a = split("\t");
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	    # swap date and subject
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	    $b = $a[0]; $a[0] = $a[1]; $a[1] = $b;
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	    push(@c, join("\t", @a));
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	} 
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	foreach (sort {$a cmp $b} @c) {
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	    ($headline, $date, $docid, $bytes, 
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	     $lines, $file, $score, $hits) = split("\t");
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	    &docdone;
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	}
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    } else {
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	foreach (@mylist) {
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	    ($date, $headline, $docid, $bytes, 
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	     $lines, $file, $score, $hits) = split("\t");
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	    &docdone;
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	}
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    }
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    #print qq[in: $in{'sort'}\n];
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    print "</OL>\n";
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    print "<p>Didn't get what you expected? ";
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    print "<a href=\"$hints\">Look here for searching hints</a>.</p>";
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    print qq{<p><a href="$searchpage">Return to the search page</a></p>\n};
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    if ($hits == 0) {
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	print "Nothing found.\n";
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    }
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    print &html_footer;
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    close(WAISOUT);
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    close(WAISIN);
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}			     
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# Given an array of sources (sans .src extension), this routine
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# checks to see if they actually exist, and if they do, if they
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# are currently available (ie, not being updated).  It returns
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# an array of sources that are actually available.
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sub checksource {
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    local (@sources) = @_;
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    $j = 0;
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    foreach $i (@sources) {
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    	if (stat("$sourcepath/$i.src")) {
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       	    if (!stat("$sourcepath/$i.update.lock")) {
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    	    	$goodsources[$j] = $i;
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    	    	$j++;
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    	    }
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    	}
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    }
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    return(@goodsources);
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}
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sub htmlescape {
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    local ($data) = @_;
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    $data =~ s/&/&/g;
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    $data =~ s/</</g;
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    return $data;
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}
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sub docdone {
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    $file =~ s/\.src$//;
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    if ($headline =~ /Search produced no result/) {
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	print "<p>The archive <em>$file</em> contains no relevant documents.</p>"
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    } else {
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        $headline = &htmlescape($headline);
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        $headline =~ s/\\"/\"/g;
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        if ($file eq "www") {
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            print "<li><a href=\"$headline\">$headline</a>\n";
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        } else {
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            print "<li><A HREF=\"getmsg.cgi?fetch=${docid}\">$headline</A>\n";
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        }
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        print "<br>";
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#	print "<input type=\"checkbox\" name=\"rf\" value=\"$docnum\">";
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	print "Score: <em>$score</em>; ";
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    	$_ = $date;
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    	/(..)(..)(..)/ && ($yr = $1 + 1900, $mo = $months[$2 - 1], $dy = $3);
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	print "Lines: <em>$lines</em>; ";
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    	print "${dy}-${mo}-${yr}; ";
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	print "Archive: <em>$file</em>";
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	print "<p></p></li>\n";
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    }
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#    $score = $headline = $lines = $bytes = $docid = $date = $file = '';
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}
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$| = 1;
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open (STDERR,"> /dev/null");
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eval '&do_wais';
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