<?php
define('PREG_CLASS_SEARCH_EXCLUDE',
'\x{0}-\x{2f}\x{3a}-\x{40}\x{5b}-\x{60}\x{7b}-\x{bf}\x{d7}\x{f7}\x{2b0}-'.
'\x{385}\x{387}\x{3f6}\x{482}-\x{489}\x{559}-\x{55f}\x{589}-\x{5c7}\x{5f3}-'.
'\x{61f}\x{640}\x{64b}-\x{65e}\x{66a}-\x{66d}\x{670}\x{6d4}\x{6d6}-\x{6ed}'.
'\x{6fd}\x{6fe}\x{700}-\x{70f}\x{711}\x{730}-\x{74a}\x{7a6}-\x{7b0}\x{901}-'.
'\x{903}\x{93c}\x{93e}-\x{94d}\x{951}-\x{954}\x{962}-\x{965}\x{970}\x{981}-'.
'\x{983}\x{9bc}\x{9be}-\x{9cd}\x{9d7}\x{9e2}\x{9e3}\x{9f2}-\x{a03}\x{a3c}-'.
'\x{a4d}\x{a70}\x{a71}\x{a81}-\x{a83}\x{abc}\x{abe}-\x{acd}\x{ae2}\x{ae3}'.
'\x{af1}-\x{b03}\x{b3c}\x{b3e}-\x{b57}\x{b70}\x{b82}\x{bbe}-\x{bd7}\x{bf0}-'.
'\x{c03}\x{c3e}-\x{c56}\x{c82}\x{c83}\x{cbc}\x{cbe}-\x{cd6}\x{d02}\x{d03}'.
'\x{d3e}-\x{d57}\x{d82}\x{d83}\x{dca}-\x{df4}\x{e31}\x{e34}-\x{e3f}\x{e46}-'.
'\x{e4f}\x{e5a}\x{e5b}\x{eb1}\x{eb4}-\x{ebc}\x{ec6}-\x{ecd}\x{f01}-\x{f1f}'.
'\x{f2a}-\x{f3f}\x{f71}-\x{f87}\x{f90}-\x{fd1}\x{102c}-\x{1039}\x{104a}-'.
'\x{104f}\x{1056}-\x{1059}\x{10fb}\x{10fc}\x{135f}-\x{137c}\x{1390}-\x{1399}'.
'\x{166d}\x{166e}\x{1680}\x{169b}\x{169c}\x{16eb}-\x{16f0}\x{1712}-\x{1714}'.
'\x{1732}-\x{1736}\x{1752}\x{1753}\x{1772}\x{1773}\x{17b4}-\x{17db}\x{17dd}'.
'\x{17f0}-\x{180e}\x{1843}\x{18a9}\x{1920}-\x{1945}\x{19b0}-\x{19c0}\x{19c8}'.
'\x{19c9}\x{19de}-\x{19ff}\x{1a17}-\x{1a1f}\x{1d2c}-\x{1d61}\x{1d78}\x{1d9b}-'.
'\x{1dc3}\x{1fbd}\x{1fbf}-\x{1fc1}\x{1fcd}-\x{1fcf}\x{1fdd}-\x{1fdf}\x{1fed}-'.
'\x{1fef}\x{1ffd}-\x{2070}\x{2074}-\x{207e}\x{2080}-\x{2101}\x{2103}-\x{2106}'.
'\x{2108}\x{2109}\x{2114}\x{2116}-\x{2118}\x{211e}-\x{2123}\x{2125}\x{2127}'.
'\x{2129}\x{212e}\x{2132}\x{213a}\x{213b}\x{2140}-\x{2144}\x{214a}-\x{2b13}'.
'\x{2ce5}-\x{2cff}\x{2d6f}\x{2e00}-\x{3005}\x{3007}-\x{303b}\x{303d}-\x{303f}'.
'\x{3099}-\x{309e}\x{30a0}\x{30fb}-\x{30fe}\x{3190}-\x{319f}\x{31c0}-\x{31cf}'.
'\x{3200}-\x{33ff}\x{4dc0}-\x{4dff}\x{a015}\x{a490}-\x{a716}\x{a802}\x{a806}'.
'\x{a80b}\x{a823}-\x{a82b}\x{d800}-\x{f8ff}\x{fb1e}\x{fb29}\x{fd3e}\x{fd3f}'.
'\x{fdfc}-\x{fe6b}\x{feff}-\x{ff0f}\x{ff1a}-\x{ff20}\x{ff3b}-\x{ff40}\x{ff5b}-'.
'\x{ff65}\x{ff70}\x{ff9e}\x{ff9f}\x{ffe0}-\x{fffd}');
define('PREG_CLASS_NUMBERS',
'\x{30}-\x{39}\x{b2}\x{b3}\x{b9}\x{bc}-\x{be}\x{660}-\x{669}\x{6f0}-\x{6f9}'.
'\x{966}-\x{96f}\x{9e6}-\x{9ef}\x{9f4}-\x{9f9}\x{a66}-\x{a6f}\x{ae6}-\x{aef}'.
'\x{b66}-\x{b6f}\x{be7}-\x{bf2}\x{c66}-\x{c6f}\x{ce6}-\x{cef}\x{d66}-\x{d6f}'.
'\x{e50}-\x{e59}\x{ed0}-\x{ed9}\x{f20}-\x{f33}\x{1040}-\x{1049}\x{1369}-'.
'\x{137c}\x{16ee}-\x{16f0}\x{17e0}-\x{17e9}\x{17f0}-\x{17f9}\x{1810}-\x{1819}'.
'\x{1946}-\x{194f}\x{2070}\x{2074}-\x{2079}\x{2080}-\x{2089}\x{2153}-\x{2183}'.
'\x{2460}-\x{249b}\x{24ea}-\x{24ff}\x{2776}-\x{2793}\x{3007}\x{3021}-\x{3029}'.
'\x{3038}-\x{303a}\x{3192}-\x{3195}\x{3220}-\x{3229}\x{3251}-\x{325f}\x{3280}-'.
'\x{3289}\x{32b1}-\x{32bf}\x{ff10}-\x{ff19}');
define('PREG_CLASS_PUNCTUATION',
'\x{21}-\x{23}\x{25}-\x{2a}\x{2c}-\x{2f}\x{3a}\x{3b}\x{3f}\x{40}\x{5b}-\x{5d}'.
'\x{5f}\x{7b}\x{7d}\x{a1}\x{ab}\x{b7}\x{bb}\x{bf}\x{37e}\x{387}\x{55a}-\x{55f}'.
'\x{589}\x{58a}\x{5be}\x{5c0}\x{5c3}\x{5f3}\x{5f4}\x{60c}\x{60d}\x{61b}\x{61f}'.
'\x{66a}-\x{66d}\x{6d4}\x{700}-\x{70d}\x{964}\x{965}\x{970}\x{df4}\x{e4f}'.
'\x{e5a}\x{e5b}\x{f04}-\x{f12}\x{f3a}-\x{f3d}\x{f85}\x{104a}-\x{104f}\x{10fb}'.
'\x{1361}-\x{1368}\x{166d}\x{166e}\x{169b}\x{169c}\x{16eb}-\x{16ed}\x{1735}'.
'\x{1736}\x{17d4}-\x{17d6}\x{17d8}-\x{17da}\x{1800}-\x{180a}\x{1944}\x{1945}'.
'\x{2010}-\x{2027}\x{2030}-\x{2043}\x{2045}-\x{2051}\x{2053}\x{2054}\x{2057}'.
'\x{207d}\x{207e}\x{208d}\x{208e}\x{2329}\x{232a}\x{23b4}-\x{23b6}\x{2768}-'.
'\x{2775}\x{27e6}-\x{27eb}\x{2983}-\x{2998}\x{29d8}-\x{29db}\x{29fc}\x{29fd}'.
'\x{3001}-\x{3003}\x{3008}-\x{3011}\x{3014}-\x{301f}\x{3030}\x{303d}\x{30a0}'.
'\x{30fb}\x{fd3e}\x{fd3f}\x{fe30}-\x{fe52}\x{fe54}-\x{fe61}\x{fe63}\x{fe68}'.
'\x{fe6a}\x{fe6b}\x{ff01}-\x{ff03}\x{ff05}-\x{ff0a}\x{ff0c}-\x{ff0f}\x{ff1a}'.
'\x{ff1b}\x{ff1f}\x{ff20}\x{ff3b}-\x{ff3d}\x{ff3f}\x{ff5b}\x{ff5d}\x{ff5f}-'.
'\x{ff65}');
define('PREG_CLASS_CJK', '\x{3041}-\x{30ff}\x{31f0}-\x{31ff}\x{3400}-\x{4db5}'.
'\x{4e00}-\x{9fbb}\x{f900}-\x{fad9}');
function search_help($path, $arg) {
switch ($path) {
case 'admin/help#search':
$output = '<p>'. t('The search module adds the ability to search for content by keywords. Search is often the only practical way to find content on a large site, and is useful for finding both users and posts.') .'</p>';
$output .= '<p>'. t('To provide keyword searching, the search engine maintains an index of words found in your site\'s content. To build and maintain this index, a correctly configured <a href="@cron">cron maintenance task</a> is required. Indexing behavior can be adjusted using the <a href="@searchsettings">search settings page</a>; for example, the <em>Number of items to index per cron run</em> sets the maximum number of items indexed in each pass of a <a href="@cron">cron maintenance task</a>. If necessary, reduce this number to prevent timeouts and memory errors when indexing.', array('@cron' => url('admin/reports/status'), '@searchsettings' => url('admin/settings/search'))) .'</p>';
$output .= '<p>'. t('For more information, see the online handbook entry for <a href="@search">Search module</a>.', array('@search' => 'http://drupal.org/handbook/modules/search/')) .'</p>';
return $output;
case 'admin/settings/search':
return '<p>'. t('The search engine maintains an index of words found in your site\'s content. To build and maintain this index, a correctly configured <a href="@cron">cron maintenance task</a> is required. Indexing behavior can be adjusted using the settings below.', array('@cron' => url('admin/reports/status'))) .'</p>';
case 'search#noresults':
return t('<ul>
<li>Check if your spelling is correct.</li>
<li>Remove quotes around phrases to match each word individually: <em>"blue smurf"</em> will match less than <em>blue smurf</em>.</li>
<li>Consider loosening your query with <em>OR</em>: <em>blue smurf</em> will match less than <em>blue OR smurf</em>.</li>
</ul>');
}
}
function search_theme() {
return array(
'search_theme_form' => array(
'arguments' => array('form' => NULL),
'template' => 'search-theme-form',
),
'search_block_form' => array(
'arguments' => array('form' => NULL),
'template' => 'search-block-form',
),
'search_result' => array(
'arguments' => array('result' => NULL, 'type' => NULL),
'file' => 'search.pages.inc',
'template' => 'search-result',
),
'search_results' => array(
'arguments' => array('results' => NULL, 'type' => NULL),
'file' => 'search.pages.inc',
'template' => 'search-results',
),
);
}
function search_perm() {
return array('search content', 'use advanced search', 'administer search');
}
function search_block($op = 'list', $delta = 0) {
if ($op == 'list') {
$blocks[0]['info'] = t('Search form');
$blocks[0]['cache'] = BLOCK_NO_CACHE;
return $blocks;
}
else if ($op == 'view' && user_access('search content')) {
$block['content'] = drupal_get_form('search_block_form');
$block['subject'] = t('Search');
return $block;
}
}
function search_menu() {
$items['search'] = array(
'title' => 'Search',
'page callback' => 'search_view',
'access arguments' => array('search content'),
'type' => MENU_SUGGESTED_ITEM,
'file' => 'search.pages.inc',
);
$items['admin/settings/search'] = array(
'title' => 'Search settings',
'description' => 'Configure relevance settings for search and other indexing options',
'page callback' => 'drupal_get_form',
'page arguments' => array('search_admin_settings'),
'access arguments' => array('administer search'),
'type' => MENU_NORMAL_ITEM,
'file' => 'search.admin.inc',
);
$items['admin/settings/search/wipe'] = array(
'title' => 'Clear index',
'page callback' => 'drupal_get_form',
'page arguments' => array('search_wipe_confirm'),
'access arguments' => array('administer search'),
'type' => MENU_CALLBACK,
'file' => 'search.admin.inc',
);
$items['admin/reports/search'] = array(
'title' => 'Top search phrases',
'description' => 'View most popular search phrases.',
'page callback' => 'dblog_top',
'page arguments' => array('search'),
'access arguments' => array('access site reports'),
'file' => 'dblog.admin.inc',
'file path' => drupal_get_path('module', 'dblog'),
);
foreach (module_implements('search') as $name) {
$items['search/'. $name .'/%menu_tail'] = array(
'title callback' => 'module_invoke',
'title arguments' => array($name, 'search', 'name', TRUE),
'page callback' => 'search_view',
'page arguments' => array($name),
'access callback' => '_search_menu',
'access arguments' => array($name),
'type' => MENU_LOCAL_TASK,
'parent' => 'search',
'file' => 'search.pages.inc',
);
}
return $items;
}
function _search_menu($name) {
return user_access('search content') && module_invoke($name, 'search', 'name');
}
function search_wipe($sid = NULL, $type = NULL, $reindex = FALSE) {
if ($type == NULL && $sid == NULL) {
module_invoke_all('search', 'reset');
}
else {
db_query("DELETE FROM {search_dataset} WHERE sid = %d AND type = '%s'", $sid, $type);
db_query("DELETE FROM {search_index} WHERE sid = %d AND type = '%s'", $sid, $type);
if (!$reindex) {
db_query("DELETE FROM {search_node_links} WHERE sid = %d AND type = '%s'", $sid, $type);
}
}
}
function search_dirty($word = NULL) {
static $dirty = array();
if ($word !== NULL) {
$dirty[$word] = TRUE;
}
else {
return $dirty;
}
}
function search_cron() {
register_shutdown_function('search_update_totals');
foreach (module_list() as $module) {
module_invoke($module, 'update_index');
}
}
function search_update_totals() {
foreach (search_dirty() as $word => $dummy) {
$total = db_result(db_query("SELECT SUM(score) FROM {search_index} WHERE word = '%s'", $word));
$total = log10(1 + 1/(max(1, $total)));
db_query("UPDATE {search_total} SET count = %f WHERE word = '%s'", $total, $word);
if (!db_affected_rows()) {
db_query("INSERT INTO {search_total} (word, count) VALUES ('%s', %f)", $word, $total);
}
}
$result = db_query("SELECT t.word AS realword, i.word FROM {search_total} t LEFT JOIN {search_index} i ON t.word = i.word WHERE i.word IS NULL");
while ($word = db_fetch_object($result)) {
db_query("DELETE FROM {search_total} WHERE word = '%s'", $word->realword);
}
}
function search_simplify($text) {
$text = decode_entities($text);
$text = drupal_strtolower($text);
search_invoke_preprocess($text);
if (variable_get('overlap_cjk', TRUE)) {
$text = preg_replace_callback('/['. PREG_CLASS_CJK .']+/u', 'search_expand_cjk', $text);
}
$text = preg_replace('/(['. PREG_CLASS_NUMBERS .']+)['. PREG_CLASS_PUNCTUATION .']+(?=['. PREG_CLASS_NUMBERS .'])/u', '\1', $text);
$text = preg_replace('/[._-]+/', '', $text);
$text = preg_replace('/['. PREG_CLASS_SEARCH_EXCLUDE .']+/u', ' ', $text);
return $text;
}
function search_expand_cjk($matches) {
$min = variable_get('minimum_word_size', 3);
$str = $matches[0];
$l = drupal_strlen($str);
if ($l <= $min) {
return ' '. $str .' ';
}
$tokens = ' ';
$chars = array();
for ($i = 0; $i < $l; ++$i) {
$current = drupal_substr($str, 0, 1);
$str = substr($str, strlen($current));
$chars[] = $current;
if ($i >= $min - 1) {
$tokens .= implode('', $chars) .' ';
array_shift($chars);
}
}
return $tokens;
}
function search_index_split($text) {
static $last = NULL;
static $lastsplit = NULL;
if ($last == $text) {
return $lastsplit;
}
$text = search_simplify($text);
$words = explode(' ', $text);
array_walk($words, '_search_index_truncate');
$last = $text;
$lastsplit = $words;
return $words;
}
function _search_index_truncate(&$text) {
$text = truncate_utf8($text, 50);
}
function search_invoke_preprocess(&$text) {
foreach (module_implements('search_preprocess') as $module) {
$text = module_invoke($module, 'search_preprocess', $text);
}
}
function search_index($sid, $type, $text) {
$minimum_word_size = variable_get('minimum_word_size', 3);
global $base_url;
$node_regexp = '@href=[\'"]?(?:'. preg_quote($base_url, '@') .'/|'. preg_quote(base_path(), '@') .')(?:\?q=)?/?((?![a-z]+:)[^\'">]+)[\'">]@i';
$tags = array('h1' => 25,
'h2' => 18,
'h3' => 15,
'h4' => 12,
'h5' => 9,
'h6' => 6,
'u' => 3,
'b' => 3,
'i' => 3,
'strong' => 3,
'em' => 3,
'a' => 10);
$text = str_replace(array('<', '>'), array(' <', '> '), $text);
$text = strip_tags($text, '<'. implode('><', array_keys($tags)) .'>');
$split = preg_split('/\s*<([^>]+?)>\s*/', $text, -1, PREG_SPLIT_DELIM_CAPTURE);
$tag = FALSE; $link = FALSE; $score = 1; $accum = ' '; $tagstack = array(); $tagwords = 0; $focus = 1;
$results = array(0 => array());
foreach ($split as $value) {
if ($tag) {
list($tagname) = explode(' ', $value, 2);
$tagname = drupal_strtolower($tagname);
if ($tagname[0] == '/') {
$tagname = substr($tagname, 1);
if (!count($tagstack) || $tagstack[0] != $tagname) {
$tagstack = array();
$score = 1;
}
else {
$score = max(1, $score - $tags[array_shift($tagstack)]);
}
if ($tagname == 'a') {
$link = FALSE;
}
}
else {
if (isset($tagstack[0]) && $tagstack[0] == $tagname) {
$tagstack = array();
$score = 1;
}
else {
array_unshift($tagstack, $tagname);
$score += $tags[$tagname];
}
if ($tagname == 'a') {
if (preg_match($node_regexp, $value, $match)) {
$path = drupal_get_normal_path($match[1]);
if (preg_match('!(?:node|book)/(?:view/)?([0-9]+)!i', $path, $match)) {
$linknid = $match[1];
if ($linknid > 0) {
$node = db_fetch_object(db_query('SELECT n.title, n.nid, n.vid, r.format FROM {node} n INNER JOIN {node_revisions} r ON n.vid = r.vid WHERE n.nid = %d', $linknid));
if (filter_format_allowcache($node->format)) {
$link = TRUE;
$linktitle = $node->title;
}
}
}
}
}
}
$tagwords = 0;
}
else {
if ($value != '') {
if ($link) {
if (preg_match('!^https?://!i', $value)) {
$value = $linktitle;
}
}
$words = search_index_split($value);
foreach ($words as $word) {
$accum .= $word .' ';
$num = is_numeric($word);
if ($num || drupal_strlen($word) >= $minimum_word_size) {
if ($num) {
$word = (int)ltrim($word, '-0');
}
if ($link) {
if (!isset($results[$linknid])) {
$results[$linknid] = array();
}
$results[$linknid][] = $word;
$focus *= 0.2;
}
if (!isset($results[0][$word])) {
$results[0][$word] = 0;
}
$results[0][$word] += $score * $focus;
$focus = min(1, .01 + 3.5 / (2 + count($results[0]) * .015));
}
$tagwords++;
if (count($tagstack) && $tagwords >= 15) {
$tagstack = array();
$score = 1;
}
}
}
}
$tag = !$tag;
}
search_wipe($sid, $type, TRUE);
db_query("INSERT INTO {search_dataset} (sid, type, data, reindex) VALUES (%d, '%s', '%s', %d)", $sid, $type, $accum, 0);
foreach ($results[0] as $word => $score) {
@db_query("INSERT INTO {search_index} (word, sid, type, score) VALUES ('%s', %d, '%s', %f)", $word, $sid, $type, $score);
if (!db_affected_rows()) {
db_query("UPDATE {search_index} SET score = score + %f WHERE word = '%s' AND sid = %d AND type = '%s'", $score, $word, $sid, $type);
}
search_dirty($word);
}
unset($results[0]);
$result = db_query("SELECT nid, caption FROM {search_node_links} WHERE sid = %d AND type = '%s'", $sid, $type);
$links = array();
while ($link = db_fetch_object($result)) {
$links[$link->nid] = $link->caption;
}
foreach ($results as $nid => $words) {
$caption = implode(' ', $words);
if (isset($links[$nid])) {
if ($links[$nid] != $caption) {
db_query("UPDATE {search_node_links} SET caption = '%s' WHERE sid = %d AND type = '%s' AND nid = %d", $caption, $sid, $type, $nid);
search_touch_node($nid);
}
unset($links[$nid]);
}
else {
db_query("INSERT INTO {search_node_links} (caption, sid, type, nid) VALUES ('%s', %d, '%s', %d)", $caption, $sid, $type, $nid);
search_touch_node($nid);
}
}
foreach ($links as $nid => $caption) {
db_query("DELETE FROM {search_node_links} WHERE sid = %d AND type = '%s' AND nid = %d", $sid, $type, $nid);
search_touch_node($nid);
}
}
function search_touch_node($nid) {
db_query("UPDATE {search_dataset} SET reindex = %d WHERE sid = %d AND type = 'node'", time(), $nid);
}
function search_nodeapi(&$node, $op, $teaser = NULL, $page = NULL) {
switch ($op) {
case 'update index':
$result = db_query("SELECT caption FROM {search_node_links} WHERE nid = %d", $node->nid);
$output = array();
while ($link = db_fetch_object($result)) {
$output[] = $link->caption;
}
if (count($output)) {
return '<a>('. implode(', ', $output) .')</a>';
}
break;
case 'update':
search_touch_node($node->nid);
break;
}
}
function search_comment($a1, $op) {
switch ($op) {
case 'insert':
case 'update':
case 'delete':
case 'publish':
case 'unpublish':
search_touch_node(is_array($a1) ? $a1['nid'] : $a1->nid);
break;
}
}
function search_query_extract($keys, $option) {
if (preg_match('/(^| )'. $option .':([^ ]*)( |$)/i', $keys, $matches)) {
return $matches[2];
}
}
function search_query_insert($keys, $option, $value = '') {
if (search_query_extract($keys, $option)) {
$keys = trim(preg_replace('/(^| )'. $option .':[^ ]*/i', '', $keys));
}
if ($value != '') {
$keys .= ' '. $option .':'. $value;
}
return $keys;
}
function search_parse_query($text) {
$keys = array('positive' => array(), 'negative' => array());
preg_match_all('/ (-?)("[^"]+"|[^" ]+)/i', ' '. $text, $matches, PREG_SET_ORDER);
if (count($matches) < 1) {
return NULL;
}
$or = FALSE;
$warning = '';
$simple = TRUE;
foreach ($matches as $match) {
$phrase = FALSE;
if ($match[2]{0} == '"') {
$match[2] = substr($match[2], 1, -1);
$phrase = TRUE;
$simple = FALSE;
}
$words = search_simplify($match[2]);
$words = $phrase ? array($words) : preg_split('/ /', $words, -1, PREG_SPLIT_NO_EMPTY);
if ($match[1] == '-') {
$keys['negative'] = array_merge($keys['negative'], $words);
}
elseif ($match[2] == 'OR' && count($keys['positive'])) {
$last = array_pop($keys['positive']);
if (!is_array($last)) {
$last = array($last);
}
$keys['positive'][] = $last;
$or = TRUE;
continue;
}
elseif ($match[2] == 'AND' || $match[2] == 'and') {
$warning = $match[2];
continue;
}
else {
if ($match[2] == 'or') {
$warning = $match[2];
}
if ($or) {
$keys['positive'][count($keys['positive']) - 1] = array_merge($keys['positive'][count($keys['positive']) - 1], $words);
}
else {
$keys['positive'] = array_merge($keys['positive'], $words);
}
}
$or = FALSE;
}
$query = array();
$query2 = array();
$arguments = array();
$arguments2 = array();
$matches = 0;
$simple_and = FALSE;
$simple_or = FALSE;
foreach ($keys['positive'] as $key) {
if (is_array($key) && count($key)) {
$simple_or = TRUE;
$queryor = array();
$any = FALSE;
foreach ($key as $or) {
list($q, $num_new_scores) = _search_parse_query($or, $arguments2);
$any |= $num_new_scores;
if ($q) {
$queryor[] = $q;
$arguments[] = $or;
}
}
if (count($queryor)) {
$query[] = '('. implode(' OR ', $queryor) .')';
$matches += ($any > 0);
}
}
else {
$simple_and = TRUE;
list($q, $num_new_scores, $num_valid_words) = _search_parse_query($key, $arguments2);
if ($q) {
$query[] = $q;
$arguments[] = $key;
if (!$num_valid_words) {
$simple = FALSE;
}
$matches += $num_new_scores;
}
}
}
if ($simple_and && $simple_or) {
$simple = FALSE;
}
foreach ($keys['negative'] as $key) {
list($q) = _search_parse_query($key, $arguments2, TRUE);
if ($q) {
$query[] = $q;
$arguments[] = $key;
$simple = FALSE;
}
}
$query = implode(' AND ', $query);
$query2 = substr(str_repeat("i.word = '%s' OR ", count($arguments2)), 0, -4);
return array($query, $arguments, $query2, $arguments2, $matches, $simple, $warning);
}
function _search_parse_query(&$word, &$scores, $not = FALSE) {
$num_new_scores = 0;
$num_valid_words = 0;
if (!$not) {
$split = explode(' ', $word);
foreach ($split as $s) {
$num = is_numeric($s);
if ($num || drupal_strlen($s) >= variable_get('minimum_word_size', 3)) {
$s = $num ? ((int)ltrim($s, '-0')) : $s;
if (!isset($scores[$s])) {
$scores[$s] = $s;
$num_new_scores++;
}
$num_valid_words++;
}
}
}
return array("d.data ". ($not ? 'NOT ' : '') ."LIKE '%% %s %%'", $num_new_scores, $num_valid_words);
}
function do_search($keywords, $type, $join1 = '', $where1 = '1 = 1', $arguments1 = array(), $columns2 = 'i.relevance AS score', $join2 = '', $arguments2 = array(), $sort_parameters = 'ORDER BY score DESC') {
$query = search_parse_query($keywords);
if ($query[2] == '') {
form_set_error('keys', t('You must include at least one positive keyword with @count characters or more.', array('@count' => variable_get('minimum_word_size', 3))));
}
if ($query[6]) {
if ($query[6] == 'or') {
drupal_set_message(t('Search for either of the two terms with uppercase <strong>OR</strong>. For example, <strong>cats OR dogs</strong>.'));
}
}
if ($query === NULL || $query[0] == '' || $query[2] == '') {
return array();
}
$conditions = "$where1 AND ($query[2]) AND i.type = '%s'";
$arguments1 = array_merge($arguments1, $query[3], array($type));
$join = "INNER JOIN {search_total} t ON i.word = t.word $join1";
if (!$query[5]) {
$conditions .= " AND ($query[0])";
$arguments1 = array_merge($arguments1, $query[1]);
$join .= " INNER JOIN {search_dataset} d ON i.sid = d.sid AND i.type = d.type";
}
$select = "SELECT SUM(i.score * t.count) AS score FROM {search_index} i $join WHERE $conditions GROUP BY i.type, i.sid HAVING COUNT(*) >= %d ORDER BY score DESC";
$arguments = array_merge($arguments1, array($query[4]));
$normalize = db_result(db_query_range($select, $arguments, 0, 1));
if (!$normalize) {
return array();
}
$columns2 = str_replace('i.relevance', '('. (1.0 / $normalize) .' * SUM(i.score * t.count))', $columns2);
$select = "SELECT i.type, i.sid, $columns2 FROM {search_index} i $join $join2 WHERE $conditions GROUP BY i.type, i.sid HAVING COUNT(*) >= %d";
$count_select = "SELECT COUNT(*) FROM ($select) n1";
$arguments = array_merge($arguments2, $arguments1, array($query[4]));
$result = pager_query("$select $sort_parameters", 10, 0, $count_select, $arguments);
$results = array();
while ($item = db_fetch_object($result)) {
$results[] = $item;
}
return $results;
}
function search_get_keys() {
static $return;
if (!isset($return)) {
$path = explode('/', $_GET['q'], 3);
$keys = empty($_REQUEST['keys']) ? '' : $_REQUEST['keys'];
$return = count($path) == 3 ? $path[2] : $keys;
}
return $return;
}
function search_form(&$form_state, $action = '', $keys = '', $type = NULL, $prompt = NULL) {
drupal_add_css(drupal_get_path('module', 'search') .'/search.css', 'module', 'all', FALSE);
if (!$action) {
$action = url('search/'. $type);
}
if (is_null($prompt)) {
$prompt = t('Enter your keywords');
}
$form = array(
'#action' => $action,
'#attributes' => array('class' => 'search-form'),
);
$form['module'] = array('#type' => 'value', '#value' => $type);
$form['basic'] = array('#type' => 'item', '#title' => $prompt);
$form['basic']['inline'] = array('#prefix' => '<div class="container-inline">', '#suffix' => '</div>');
$form['basic']['inline']['keys'] = array(
'#type' => 'textfield',
'#title' => '',
'#default_value' => $keys,
'#size' => $prompt ? 40 : 20,
'#maxlength' => 255,
);
$form['basic']['inline']['processed_keys'] = array('#type' => 'value', '#value' => array());
$form['basic']['inline']['submit'] = array('#type' => 'submit', '#value' => t('Search'));
return $form;
}
function search_box(&$form_state, $form_id) {
$form[$form_id] = array(
'#title' => t('Search this site'),
'#type' => 'textfield',
'#size' => 15,
'#default_value' => '',
'#attributes' => array('title' => t('Enter the terms you wish to search for.')),
);
$form['submit'] = array('#type' => 'submit', '#value' => t('Search'));
$form['#submit'][] = 'search_box_form_submit';
$form['#validate'][] = 'search_box_form_validate';
return $form;
}
function search_box_form_submit($form, &$form_state) {
$form_id = $form['form_id']['#value'];
$form_state['redirect'] = 'search/node/'. trim($form_state['values'][$form_id]);
}
function template_preprocess_search_theme_form(&$variables) {
$variables['search'] = array();
$hidden = array();
foreach (element_children($variables['form']) as $key) {
$type = $variables['form'][$key]['#type'];
if ($type == 'hidden' || $type == 'token') {
$hidden[] = drupal_render($variables['form'][$key]);
}
else {
$variables['search'][$key] = drupal_render($variables['form'][$key]);
}
}
$variables['search']['hidden'] = implode($hidden);
$variables['search_form'] = implode($variables['search']);
}
function template_preprocess_search_block_form(&$variables) {
$variables['search'] = array();
$hidden = array();
foreach (element_children($variables['form']) as $key) {
$type = $variables['form'][$key]['#type'];
if ($type == 'hidden' || $type == 'token') {
$hidden[] = drupal_render($variables['form'][$key]);
}
else {
$variables['search'][$key] = drupal_render($variables['form'][$key]);
}
}
$variables['search']['hidden'] = implode($hidden);
$variables['search_form'] = implode($variables['search']);
}
function search_data($keys = NULL, $type = 'node') {
if (isset($keys)) {
if (module_hook($type, 'search')) {
$results = module_invoke($type, 'search', 'search', $keys);
if (isset($results) && is_array($results) && count($results)) {
if (module_hook($type, 'search_page')) {
return module_invoke($type, 'search_page', $results);
}
else {
return theme('search_results', $results, $type);
}
}
}
}
}
function search_excerpt($keys, $text) {
$boundary = '(?:(?<=['. PREG_CLASS_SEARCH_EXCLUDE . PREG_CLASS_CJK .'])|(?=['. PREG_CLASS_SEARCH_EXCLUDE . PREG_CLASS_CJK .']))';
preg_match_all('/ ("([^"]+)"|(?!OR)([^" ]+))/', ' '. $keys, $matches);
$keys = array_merge($matches[2], $matches[3]);
$text = ' '. strip_tags(str_replace(array('<', '>'), array(' <', '> '), $text)) .' ';
array_walk($keys, '_search_excerpt_replace');
$workkeys = $keys;
$ranges = array();
$included = array();
$length = 0;
while ($length < 256 && count($workkeys)) {
foreach ($workkeys as $k => $key) {
if (strlen($key) == 0) {
unset($workkeys[$k]);
unset($keys[$k]);
continue;
}
if ($length >= 256) {
break;
}
if (!isset($included[$key])) {
$included[$key] = 0;
}
if (preg_match('/'. $boundary . $key . $boundary .'/iu', $text, $match, PREG_OFFSET_CAPTURE, $included[$key])) {
$p = $match[0][1];
if (($q = strpos($text, ' ', max(0, $p - 60))) !== FALSE) {
$end = substr($text, $p, 80);
if (($s = strrpos($end, ' ')) !== FALSE) {
$ranges[$q] = $p + $s;
$length += $p + $s - $q;
$included[$key] = $p + 1;
}
else {
unset($workkeys[$k]);
}
}
else {
unset($workkeys[$k]);
}
}
else {
unset($workkeys[$k]);
}
}
}
if (count($ranges) == 0) {
return truncate_utf8($text, 256) .' ...';
}
ksort($ranges);
$newranges = array();
foreach ($ranges as $from2 => $to2) {
if (!isset($from1)) {
$from1 = $from2;
$to1 = $to2;
continue;
}
if ($from2 <= $to1) {
$to1 = max($to1, $to2);
}
else {
$newranges[$from1] = $to1;
$from1 = $from2;
$to1 = $to2;
}
}
$newranges[$from1] = $to1;
$out = array();
foreach ($newranges as $from => $to) {
$out[] = substr($text, $from, $to - $from);
}
$text = (isset($newranges[0]) ? '' : '... ') . implode(' ... ', $out) .' ...';
$text = preg_replace('/'. $boundary .'('. implode('|', $keys) .')'. $boundary .'/iu', '<strong>\0</strong>', $text);
return $text;
}
function _search_excerpt_replace(&$text) {
$text = preg_quote($text, '/');
}
function search_forms() {
$forms['search_theme_form']= array(
'callback' => 'search_box',
'callback arguments' => array('search_theme_form'),
);
$forms['search_block_form']= array(
'callback' => 'search_box',
'callback arguments' => array('search_block_form'),
);
return $forms;
}