Is there anyone out there who might have any clue on how to fix my problem? Well, here is my whole search.cgi script.
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#!/usr/local/bin/perl
# -------------
# Links
# -------------
# Links Manager
#
# File: search.cgi
# Description: Searches the database and produces a list of results. If no options are
# given, the script will produce a search form found in site_html.pl.
# Author: Alex Krohn
# Email: alex@gossamer-threads.com
# Web: http://www.gossamer-threads.com/
# Version: 2.0
#
# (c) 1998
Gossamer Threads Inc.
#
# This script is not freeware! Please read the README for full details
# on registration and terms of use.
# =====================================================================
#
# Form Input:
# 'type' : can be either 'keyword' or 'phrase'.
# 'bool' : can be either 'and' or 'or'.
# 'mh' : the maximum number of hits, can be either 10, 25, 50, 100.
# 'nh' : the page hit we are on.
#
# Setup:
# Make sure the require statement below points to the config file.
# Required Librariers
# --------------------------------------------------------
eval {
($0 =~ m,(.*)/[^/]+,) && unshift (@INC, "$1"); # Get the script location: UNIX /
($0 =~ m,(.*)\\[^\\]+,) && unshift (@INC, "$1"); # Get the script location: Windows \
require "admin/links.cfg"; # Change this to full path to links.cfg if you have problems.
require "$db_lib_path/db_utils.pl";
require "$db_lib_path/links.def";
$build_use_templates ?
require "$db_lib_path/site_html_templates.pl" :
require "$db_lib_path/site_html.pl";
};
if ($@) {
print "Content-type: text/plain\n\n";
print "Error including libraries: $@\n";
print "Make sure they exist, permissions are set properly, and paths are set correctly.";
exit;
}
# ========================================================
eval { &main; }; # Trap any fatal errors so the program hopefully
if ($@) { &cgierr("fatal error: $@"); } # never produces that nasty 500 server error page.
exit; # There are only two exit calls in the script, here and in in &cgierr.
sub main {
# --------------------------------------------------------
%in = &parse_form();
# Display the form if called with no input.
(keys %in <= 0) and &site_html_search_form() and return;
# Set maximum hits -- default to 25.
local $maxhits = 25;
if ($in{'mh'} && (($in{'mh'} == 10) | | ($in{'mh'} == 25) | | ($in{'mh'} == 50) | | ($in{'mh'} = 100))) {
$maxhits = $in{'mh'};
}
# Set search type -- either phrase or keyword. Also build keyword list to search on.
my @search_terms = ();
($in{'type'} eq 'phrase') ?
(@search_terms = ($in{'query'})) :
(@search_terms = split (/\s/, $in{'query'}));
# Set boolean connector and next hits page.
my $bool = $in{'bool'} | | 'and';
my $nh = $in{'nh'} | | 1;
# Store the search results here.
local (%link_results, @category_results);
# Do the actual search.
my $status = &search (\@search_terms, $bool);
if ($status ne "ok") { &site_html_search_failure ($status); return; }
# Return unless we have results.
((keys %link_results > 0) or ($#category_results >= 0)) or
&site_html_search_failure ("no matching records") and return;
# The HTML used in the output is stored here.
local ($cat_hits, $link_hits, $category_results, $link_results, $next);
# Build the HTML for the category results and store it in "$category_results". Only build the html
# if we are on the first set of link results.
foreach $category (@category_results) {
if ($nh == 1) {
$cat_clean = &build_clean($category);
$linked_title = &build_linked_title ($category);
$category_results .= qq|<li>$linked_title\n|;
}
$cat_hits++;
}
$cat_hits | |= 0;
$lowrange = ($nh-1) * $maxhits + 1;
$highrange = $nh * $maxhits;
# Go through each category of links returned, and build the HTML. Store in hash %link_output.
SETOFLINKS: foreach $setoflinks (sort keys %link_results) {
my $hits = ($#{$link_results{$setoflinks}} + 1) / ($#db_cols+1);
LINK: for ($i = 0; $i < $hits; $i++) {
$link_hits++;
if (($link_hits <= $highrange) && ($link_hits >= $lowrange)) {
%tmp = &array_to_hash ($i, @{$link_results{$setoflinks}});
$link_output{$setoflinks} .= &site_html_link (%tmp) . "\n";
}
}
}
# Go through the hash just built, and build the complete link output. Store in $link_results.
foreach $setoflinks (sort keys %link_output) {
$cat_clean = &build_clean ($setoflinks);
$title_linked = &build_linked_title ($setoflinks);
$link_results .= qq|<P>$title_linked\n|;
$link_results .= $link_output{$setoflinks};
}
# If we want to bold the search terms...
if ($search_bold) {
foreach $term (@search_terms) {
# This reg expression will do the trick, and doesn't bold things inside <> tags such as
# URL's.
$link_results =~ s,(<[^>]+> )|(\Q$term\E),defined($1) ? $1 : "<STRONG>$2</STRONG>",gie;
$category_results =~ s,(<[^>]+> )|(\Q$term\E),defined($1) ? $1 : "<STRONG>$2</STRONG>",gie;
}
}
# If we have to many hits, let's build the next toolbar, and return only the hits we want.
my ($next_hit, $prev_hit, $next_url, $left, $right, $lower, $upper, $i);
if ($link_hits > $maxhits) {
# Remove the nh= from the query string.
$next_url = $ENV{'QUERY_STRING'};
$next_url =~ s/\&nh=\d+//;
$next_hit = $nh + 1; $prev_hit = $nh - 1;
# Build the next hits toolbar. It seems really complicated as we have to do
# some number crunching to keep track of where we are on the toolbar, and so
# that the toolbar stays centred.
# First, set how many pages we have on the left and the right.
$left = $nh; $right = int($numhits/$maxhits) - $nh;
# Then work out what page number we can go above and below.
($left > 7) ? ($lower = $left - 7) : ($lower = 1);
($right > 7) ? ($upper = $nh + 7) : ($upper = int($link_hits/$maxhits) + 1);
# Finally, adjust those page numbers if we are near an endpoint.
(7 - $nh >= 0) and ($upper = $upper + (8 - $nh));
($nh > ($link_hits/$maxhits - 7)) and ($lower = $lower - ($nh - int($link_hits/$maxhits - 7) - 1));
$next = "";
# Then let's go through the pages and build the HTML.
($nh > 1) and ($next .= qq~<a href="$build_search_url?$next_url&nh=$prev_hit">[<<]</a> ~);
for ($i = 1; $i <= int($link_hits/$maxhits) + 1; $i++) {
if ($i < $lower) { $next .= " ... "; $i = ($lower-1); next; }
if ($i > $upper) { $next .= " ... "; last; }
($i == $nh) ?
($next .= qq~$i ~) :
($next .= qq~<a href="$build_search_url?$next_url&nh=$i">$i</a> ~);
(($i * $maxhits) >= $link_hits) and last; # Special case if we hit exact.
}
$next .= qq~<a href="$build_search_url?$next_url&nh=$next_hit">[>>]</a> ~ unless ($nh == $i);
}
# Print out the HTML results.
&site_html_search_results;
}
sub search {
# --------------------------------------------------------
# This routine does the actual search of the database.
#
my ($search_terms, $bool) = @_;
my ($regexp, @values, $grand_total, $match, $andmatch, $field, $or_match, %seen, $link, $tmp);
# Save the reg expressions to avoid rebuilding.
$or_match = $bool ne 'and';
if ($or_match) {
for (0 .. $#{$search_terms}) {
next if (length ${$search_terms}[$_] < 2); # Skip single letter words.
$tmp .= "m/\Q${$search_terms}[$_]\E/io | |";
}
}
else {
for (0 .. $#{$search_terms}) {
next if (length ${$search_terms}[$_] < 2); # Skip single letter words.
$tmp .= "m/\Q${$search_terms}[$_]\E/io &&";
}
}
chop ($tmp); chop ($tmp);
# We can also search by field names.
my @field_search;
for (0 .. $#db_cols) {
exists $in{$db_cols[$_]} and (push (@field_search, $_));
}
if (!$tmp and !@field_search) { return ("Please enter one or more keywords."); }
if ($tmp) { $regexp = eval "sub { $tmp }"; $@ and &cgierr ("Can't compile reg exp: $tmp! Reason: $@");}
# Go through the database.
open (DB, "<$db_file_name") or &cgierr("error in search. unable to open database: $db_file_name. Reason: $!");
flock (DB, 1) if ($db_use_flock);
LINE: while (<DB> ) {
/^#/ and next LINE; # Skip comment Lines.
/^\s*$/ and next LINE; # Skip blank lines.
chomp; # Remove trailing new line.
@values = &split_decode($_);
$grand_total++;
# Check to see if the link matches.
$match = 0; $andmatch = 1;
if ($regexp) {
FIELD: foreach $field (@search_fields) {
$_ = $values[$field];
$or_match ?
($match = $match | | &{$regexp}) :
($match = &{$regexp});
last FIELD if ($match);
}
}
# Check to see if the link matches any database fields. Only exact matches
# here.
if ($or_match | | $match | | !$regexp) {
FIELD: foreach $field (@field_search) {
if ($or_match) {
$match = $match | | ($in{$db_cols[$field]} eq $values[$field]);
$match and last FIELD;
}
else {
$match = ($in{$db_cols[$field]} eq $values[$field]);
$match or last FIELD;
}
}
}
$andmatch = $andmatch && $match;
# If we have a hit, add it in!
if (($or_match && $match) or $andmatch) {
push (@{$link_results{$values[$db_category]}}, @values);
$numhits++; # We have a match!
}
# Check to see if the category matches.
if ($regexp and !$seen{$values[$db_category]}++) {
$match=0; $andmatch = 1;
$_ = $values[$db_category];
$or_match ?
($match = $match | | &{$regexp}) :
($match = &{$regexp});
$andmatch = $andmatch && $match;
if (($or_match && $match) or $andmatch) {
$numcat++;
push (@category_results, $values[$db_category]);
}
}
}
close DB;
# Word is too common, don't try and sort it, can cause problems.
if (($numhits > 50) and (($grand_total * 0.75) < $numhits)) {
return "Search term is too common.";
}
&log2;
# Sort the results using build_sorthit found in db.pl.
foreach $link ( keys %link_results ) {
@{$link_results{$link}} = &build_sorthit (@{$link_results{$link}});
}
@category_results = sort @category_results;
return "ok";
}
sub build_linked_title {
# --------------------------------------------------------
# A little different then the one found in nph-build.cgi as it also
# links up the last field as well.
my ($input) = shift;
my ($dir, $output, $path, $last);
foreach $dir ((split m!/!, $input)) {
$path .= "/$dir";
$dir = &build_clean ($dir);
$output .= qq|<A HREF="$build_root_url$path/">$dir</A>:|;
}
chop ($output);
return $output;
}
sub log2 {
open (KEYWORDS, ">>$kword_file_name") or &cgierr("error in search. cannot open keyword file1");
print KEYWORDS $in{'query'};
print KEYWORDS "\|";
print KEYWORDS $ENV{'REMOTE_HOST'};
print KEYWORDS "\|";
print KEYWORDS &get_date;
print KEYWORDS "\|";
print KEYWORDS &get_time;
print KEYWORDS "\|";
print KEYWORDS $numhits;
print KEYWORDS "\n";
close (KEYWORDS);
}
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If you notice any problems, please let me know.
Thanks!
