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Diffstat (limited to 'wiki/inc/fulltext.php')
| -rw-r--r-- | wiki/inc/fulltext.php | 919 |
1 files changed, 0 insertions, 919 deletions
diff --git a/wiki/inc/fulltext.php b/wiki/inc/fulltext.php deleted file mode 100644 index dba11d0..0000000 --- a/wiki/inc/fulltext.php +++ /dev/null @@ -1,919 +0,0 @@ -<?php -/** - * DokuWiki fulltextsearch functions using the index - * - * @license GPL 2 (http://www.gnu.org/licenses/gpl.html) - * @author Andreas Gohr <andi@splitbrain.org> - */ - -if(!defined('DOKU_INC')) die('meh.'); - -/** - * create snippets for the first few results only - */ -if(!defined('FT_SNIPPET_NUMBER')) define('FT_SNIPPET_NUMBER',15); - -/** - * The fulltext search - * - * Returns a list of matching documents for the given query - * - * refactored into ft_pageSearch(), _ft_pageSearch() and trigger_event() - * - * @param string $query - * @param array $highlight - * @param string $sort - * @param int|string $after only show results with an modified time after this date, accepts timestap or strtotime arguments - * @param int|string $before only show results with an modified time before this date, accepts timestap or strtotime arguments - * - * @return array - */ -function ft_pageSearch($query,&$highlight, $sort = null, $after = null, $before = null){ - - if ($sort === null) { - $sort = 'hits'; - } - $data = [ - 'query' => $query, - 'sort' => $sort, - 'after' => $after, - 'before' => $before - ]; - $data['highlight'] =& $highlight; - - return trigger_event('SEARCH_QUERY_FULLPAGE', $data, '_ft_pageSearch'); -} - -/** - * Returns a list of matching documents for the given query - * - * @author Andreas Gohr <andi@splitbrain.org> - * @author Kazutaka Miyasaka <kazmiya@gmail.com> - * - * @param array $data event data - * @return array matching documents - */ -function _ft_pageSearch(&$data) { - $Indexer = idx_get_indexer(); - - // parse the given query - $q = ft_queryParser($Indexer, $data['query']); - $data['highlight'] = $q['highlight']; - - if (empty($q['parsed_ary'])) return array(); - - // lookup all words found in the query - $lookup = $Indexer->lookup($q['words']); - - // get all pages in this dokuwiki site (!: includes nonexistent pages) - $pages_all = array(); - foreach ($Indexer->getPages() as $id) { - $pages_all[$id] = 0; // base: 0 hit - } - - // process the query - $stack = array(); - foreach ($q['parsed_ary'] as $token) { - switch (substr($token, 0, 3)) { - case 'W+:': - case 'W-:': - case 'W_:': // word - $word = substr($token, 3); - $stack[] = (array) $lookup[$word]; - break; - case 'P+:': - case 'P-:': // phrase - $phrase = substr($token, 3); - // since phrases are always parsed as ((W1)(W2)...(P)), - // the end($stack) always points the pages that contain - // all words in this phrase - $pages = end($stack); - $pages_matched = array(); - foreach(array_keys($pages) as $id){ - $evdata = array( - 'id' => $id, - 'phrase' => $phrase, - 'text' => rawWiki($id) - ); - $evt = new Doku_Event('FULLTEXT_PHRASE_MATCH',$evdata); - if ($evt->advise_before() && $evt->result !== true) { - $text = utf8_strtolower($evdata['text']); - if (strpos($text, $phrase) !== false) { - $evt->result = true; - } - } - $evt->advise_after(); - if ($evt->result === true) { - $pages_matched[$id] = 0; // phrase: always 0 hit - } - } - $stack[] = $pages_matched; - break; - case 'N+:': - case 'N-:': // namespace - $ns = cleanID(substr($token, 3)) . ':'; - $pages_matched = array(); - foreach (array_keys($pages_all) as $id) { - if (strpos($id, $ns) === 0) { - $pages_matched[$id] = 0; // namespace: always 0 hit - } - } - $stack[] = $pages_matched; - break; - case 'AND': // and operation - list($pages1, $pages2) = array_splice($stack, -2); - $stack[] = ft_resultCombine(array($pages1, $pages2)); - break; - case 'OR': // or operation - list($pages1, $pages2) = array_splice($stack, -2); - $stack[] = ft_resultUnite(array($pages1, $pages2)); - break; - case 'NOT': // not operation (unary) - $pages = array_pop($stack); - $stack[] = ft_resultComplement(array($pages_all, $pages)); - break; - } - } - $docs = array_pop($stack); - - if (empty($docs)) return array(); - - // check: settings, acls, existence - foreach (array_keys($docs) as $id) { - if (isHiddenPage($id) || auth_quickaclcheck($id) < AUTH_READ || !page_exists($id, '', false)) { - unset($docs[$id]); - } - } - - $docs = _ft_filterResultsByTime($docs, $data['after'], $data['before']); - - if ($data['sort'] === 'mtime') { - uksort($docs, 'ft_pagemtimesorter'); - } else { - // sort docs by count - arsort($docs); - } - - return $docs; -} - -/** - * Returns the backlinks for a given page - * - * Uses the metadata index. - * - * @param string $id The id for which links shall be returned - * @param bool $ignore_perms Ignore the fact that pages are hidden or read-protected - * @return array The pages that contain links to the given page - */ -function ft_backlinks($id, $ignore_perms = false){ - $result = idx_get_indexer()->lookupKey('relation_references', $id); - - if(!count($result)) return $result; - - // check ACL permissions - foreach(array_keys($result) as $idx){ - if(($ignore_perms !== true && ( - isHiddenPage($result[$idx]) || auth_quickaclcheck($result[$idx]) < AUTH_READ - )) || !page_exists($result[$idx], '', false)){ - unset($result[$idx]); - } - } - - sort($result); - return $result; -} - -/** - * Returns the pages that use a given media file - * - * Uses the relation media metadata property and the metadata index. - * - * Note that before 2013-07-31 the second parameter was the maximum number of results and - * permissions were ignored. That's why the parameter is now checked to be explicitely set - * to true (with type bool) in order to be compatible with older uses of the function. - * - * @param string $id The media id to look for - * @param bool $ignore_perms Ignore hidden pages and acls (optional, default: false) - * @return array A list of pages that use the given media file - */ -function ft_mediause($id, $ignore_perms = false){ - $result = idx_get_indexer()->lookupKey('relation_media', $id); - - if(!count($result)) return $result; - - // check ACL permissions - foreach(array_keys($result) as $idx){ - if(($ignore_perms !== true && ( - isHiddenPage($result[$idx]) || auth_quickaclcheck($result[$idx]) < AUTH_READ - )) || !page_exists($result[$idx], '', false)){ - unset($result[$idx]); - } - } - - sort($result); - return $result; -} - - -/** - * Quicksearch for pagenames - * - * By default it only matches the pagename and ignores the - * namespace. This can be changed with the second parameter. - * The third parameter allows to search in titles as well. - * - * The function always returns titles as well - * - * @triggers SEARCH_QUERY_PAGELOOKUP - * @author Andreas Gohr <andi@splitbrain.org> - * @author Adrian Lang <lang@cosmocode.de> - * - * @param string $id page id - * @param bool $in_ns match against namespace as well? - * @param bool $in_title search in title? - * @param int|string $after only show results with an modified time after this date, accepts timestap or strtotime arguments - * @param int|string $before only show results with an modified time before this date, accepts timestap or strtotime arguments - * - * @return string[] - */ -function ft_pageLookup($id, $in_ns=false, $in_title=false, $after = null, $before = null){ - $data = [ - 'id' => $id, - 'in_ns' => $in_ns, - 'in_title' => $in_title, - 'after' => $after, - 'before' => $before - ]; - $data['has_titles'] = true; // for plugin backward compatibility check - return trigger_event('SEARCH_QUERY_PAGELOOKUP', $data, '_ft_pageLookup'); -} - -/** - * Returns list of pages as array(pageid => First Heading) - * - * @param array &$data event data - * @return string[] - */ -function _ft_pageLookup(&$data){ - // split out original parameters - $id = $data['id']; - $Indexer = idx_get_indexer(); - $parsedQuery = ft_queryParser($Indexer, $id); - if (count($parsedQuery['ns']) > 0) { - $ns = cleanID($parsedQuery['ns'][0]) . ':'; - $id = implode(' ', $parsedQuery['highlight']); - } - - $in_ns = $data['in_ns']; - $in_title = $data['in_title']; - $cleaned = cleanID($id); - - $Indexer = idx_get_indexer(); - $page_idx = $Indexer->getPages(); - - $pages = array(); - if ($id !== '' && $cleaned !== '') { - foreach ($page_idx as $p_id) { - if ((strpos($in_ns ? $p_id : noNSorNS($p_id), $cleaned) !== false)) { - if (!isset($pages[$p_id])) - $pages[$p_id] = p_get_first_heading($p_id, METADATA_DONT_RENDER); - } - } - if ($in_title) { - foreach ($Indexer->lookupKey('title', $id, '_ft_pageLookupTitleCompare') as $p_id) { - if (!isset($pages[$p_id])) - $pages[$p_id] = p_get_first_heading($p_id, METADATA_DONT_RENDER); - } - } - } - - if (isset($ns)) { - foreach (array_keys($pages) as $p_id) { - if (strpos($p_id, $ns) !== 0) { - unset($pages[$p_id]); - } - } - } - - // discard hidden pages - // discard nonexistent pages - // check ACL permissions - foreach(array_keys($pages) as $idx){ - if(!isVisiblePage($idx) || !page_exists($idx) || - auth_quickaclcheck($idx) < AUTH_READ) { - unset($pages[$idx]); - } - } - - $pages = _ft_filterResultsByTime($pages, $data['after'], $data['before']); - - uksort($pages,'ft_pagesorter'); - return $pages; -} - - -/** - * @param array $results search results in the form pageid => value - * @param int|string $after only returns results with an modified time after this date, accepts timestap or strtotime arguments - * @param int|string $before only returns results with an modified time after this date, accepts timestap or strtotime arguments - * - * @return array - */ -function _ft_filterResultsByTime(array $results, $after, $before) { - if ($after || $before) { - $after = is_int($after) ? $after : strtotime($after); - $before = is_int($before) ? $before : strtotime($before); - - foreach ($results as $id => $value) { - $mTime = filemtime(wikiFN($id)); - if ($after && $after > $mTime) { - unset($results[$id]); - continue; - } - if ($before && $before < $mTime) { - unset($results[$id]); - } - } - } - - return $results; -} - -/** - * Tiny helper function for comparing the searched title with the title - * from the search index. This function is a wrapper around stripos with - * adapted argument order and return value. - * - * @param string $search searched title - * @param string $title title from index - * @return bool - */ -function _ft_pageLookupTitleCompare($search, $title) { - return stripos($title, $search) !== false; -} - -/** - * Sort pages based on their namespace level first, then on their string - * values. This makes higher hierarchy pages rank higher than lower hierarchy - * pages. - * - * @param string $a - * @param string $b - * @return int Returns < 0 if $a is less than $b; > 0 if $a is greater than $b, and 0 if they are equal. - */ -function ft_pagesorter($a, $b){ - $ac = count(explode(':',$a)); - $bc = count(explode(':',$b)); - if($ac < $bc){ - return -1; - }elseif($ac > $bc){ - return 1; - } - return strcmp ($a,$b); -} - -/** - * Sort pages by their mtime, from newest to oldest - * - * @param string $a - * @param string $b - * - * @return int Returns < 0 if $a is newer than $b, > 0 if $b is newer than $a and 0 if they are of the same age - */ -function ft_pagemtimesorter($a, $b) { - $mtimeA = filemtime(wikiFN($a)); - $mtimeB = filemtime(wikiFN($b)); - return $mtimeB - $mtimeA; -} - -/** - * Creates a snippet extract - * - * @author Andreas Gohr <andi@splitbrain.org> - * @triggers FULLTEXT_SNIPPET_CREATE - * - * @param string $id page id - * @param array $highlight - * @return mixed - */ -function ft_snippet($id,$highlight){ - $text = rawWiki($id); - $text = str_replace("\xC2\xAD",'',$text); // remove soft-hyphens - $evdata = array( - 'id' => $id, - 'text' => &$text, - 'highlight' => &$highlight, - 'snippet' => '', - ); - - $evt = new Doku_Event('FULLTEXT_SNIPPET_CREATE',$evdata); - if ($evt->advise_before()) { - $match = array(); - $snippets = array(); - $utf8_offset = $offset = $end = 0; - $len = utf8_strlen($text); - - // build a regexp from the phrases to highlight - $re1 = '('.join('|',array_map('ft_snippet_re_preprocess', array_map('preg_quote_cb',array_filter((array) $highlight)))).')'; - $re2 = "$re1.{0,75}(?!\\1)$re1"; - $re3 = "$re1.{0,45}(?!\\1)$re1.{0,45}(?!\\1)(?!\\2)$re1"; - - for ($cnt=4; $cnt--;) { - if (0) { - } else if (preg_match('/'.$re3.'/iu',$text,$match,PREG_OFFSET_CAPTURE,$offset)) { - } else if (preg_match('/'.$re2.'/iu',$text,$match,PREG_OFFSET_CAPTURE,$offset)) { - } else if (preg_match('/'.$re1.'/iu',$text,$match,PREG_OFFSET_CAPTURE,$offset)) { - } else { - break; - } - - list($str,$idx) = $match[0]; - - // convert $idx (a byte offset) into a utf8 character offset - $utf8_idx = utf8_strlen(substr($text,0,$idx)); - $utf8_len = utf8_strlen($str); - - // establish context, 100 bytes surrounding the match string - // first look to see if we can go 100 either side, - // then drop to 50 adding any excess if the other side can't go to 50, - $pre = min($utf8_idx-$utf8_offset,100); - $post = min($len-$utf8_idx-$utf8_len,100); - - if ($pre>50 && $post>50) { - $pre = $post = 50; - } else if ($pre>50) { - $pre = min($pre,100-$post); - } else if ($post>50) { - $post = min($post, 100-$pre); - } else if ($offset == 0) { - // both are less than 50, means the context is the whole string - // make it so and break out of this loop - there is no need for the - // complex snippet calculations - $snippets = array($text); - break; - } - - // establish context start and end points, try to append to previous - // context if possible - $start = $utf8_idx - $pre; - $append = ($start < $end) ? $end : false; // still the end of the previous context snippet - $end = $utf8_idx + $utf8_len + $post; // now set it to the end of this context - - if ($append) { - $snippets[count($snippets)-1] .= utf8_substr($text,$append,$end-$append); - } else { - $snippets[] = utf8_substr($text,$start,$end-$start); - } - - // set $offset for next match attempt - // continue matching after the current match - // if the current match is not the longest possible match starting at the current offset - // this prevents further matching of this snippet but for possible matches of length - // smaller than match length + context (at least 50 characters) this match is part of the context - $utf8_offset = $utf8_idx + $utf8_len; - $offset = $idx + strlen(utf8_substr($text,$utf8_idx,$utf8_len)); - $offset = utf8_correctIdx($text,$offset); - } - - $m = "\1"; - $snippets = preg_replace('/'.$re1.'/iu',$m.'$1'.$m,$snippets); - $snippet = preg_replace('/'.$m.'([^'.$m.']*?)'.$m.'/iu','<strong class="search_hit">$1</strong>',hsc(join('... ',$snippets))); - - $evdata['snippet'] = $snippet; - } - $evt->advise_after(); - unset($evt); - - return $evdata['snippet']; -} - -/** - * Wraps a search term in regex boundary checks. - * - * @param string $term - * @return string - */ -function ft_snippet_re_preprocess($term) { - // do not process asian terms where word boundaries are not explicit - if(preg_match('/'.IDX_ASIAN.'/u',$term)){ - return $term; - } - - if (UTF8_PROPERTYSUPPORT) { - // unicode word boundaries - // see http://stackoverflow.com/a/2449017/172068 - $BL = '(?<!\pL)'; - $BR = '(?!\pL)'; - } else { - // not as correct as above, but at least won't break - $BL = '\b'; - $BR = '\b'; - } - - if(substr($term,0,2) == '\\*'){ - $term = substr($term,2); - }else{ - $term = $BL.$term; - } - - if(substr($term,-2,2) == '\\*'){ - $term = substr($term,0,-2); - }else{ - $term = $term.$BR; - } - - if($term == $BL || $term == $BR || $term == $BL.$BR) $term = ''; - return $term; -} - -/** - * Combine found documents and sum up their scores - * - * This function is used to combine searched words with a logical - * AND. Only documents available in all arrays are returned. - * - * based upon PEAR's PHP_Compat function for array_intersect_key() - * - * @param array $args An array of page arrays - * @return array - */ -function ft_resultCombine($args){ - $array_count = count($args); - if($array_count == 1){ - return $args[0]; - } - - $result = array(); - if ($array_count > 1) { - foreach ($args[0] as $key => $value) { - $result[$key] = $value; - for ($i = 1; $i !== $array_count; $i++) { - if (!isset($args[$i][$key])) { - unset($result[$key]); - break; - } - $result[$key] += $args[$i][$key]; - } - } - } - return $result; -} - -/** - * Unites found documents and sum up their scores - * - * based upon ft_resultCombine() function - * - * @param array $args An array of page arrays - * @return array - * - * @author Kazutaka Miyasaka <kazmiya@gmail.com> - */ -function ft_resultUnite($args) { - $array_count = count($args); - if ($array_count === 1) { - return $args[0]; - } - - $result = $args[0]; - for ($i = 1; $i !== $array_count; $i++) { - foreach (array_keys($args[$i]) as $id) { - $result[$id] += $args[$i][$id]; - } - } - return $result; -} - -/** - * Computes the difference of documents using page id for comparison - * - * nearly identical to PHP5's array_diff_key() - * - * @param array $args An array of page arrays - * @return array - * - * @author Kazutaka Miyasaka <kazmiya@gmail.com> - */ -function ft_resultComplement($args) { - $array_count = count($args); - if ($array_count === 1) { - return $args[0]; - } - - $result = $args[0]; - foreach (array_keys($result) as $id) { - for ($i = 1; $i !== $array_count; $i++) { - if (isset($args[$i][$id])) unset($result[$id]); - } - } - return $result; -} - -/** - * Parses a search query and builds an array of search formulas - * - * @author Andreas Gohr <andi@splitbrain.org> - * @author Kazutaka Miyasaka <kazmiya@gmail.com> - * - * @param Doku_Indexer $Indexer - * @param string $query search query - * @return array of search formulas - */ -function ft_queryParser($Indexer, $query){ - /** - * parse a search query and transform it into intermediate representation - * - * in a search query, you can use the following expressions: - * - * words: - * include - * -exclude - * phrases: - * "phrase to be included" - * -"phrase you want to exclude" - * namespaces: - * @include:namespace (or ns:include:namespace) - * ^exclude:namespace (or -ns:exclude:namespace) - * groups: - * () - * -() - * operators: - * and ('and' is the default operator: you can always omit this) - * or (or pipe symbol '|', lower precedence than 'and') - * - * e.g. a query [ aa "bb cc" @dd:ee ] means "search pages which contain - * a word 'aa', a phrase 'bb cc' and are within a namespace 'dd:ee'". - * this query is equivalent to [ -(-aa or -"bb cc" or -ns:dd:ee) ] - * as long as you don't mind hit counts. - * - * intermediate representation consists of the following parts: - * - * ( ) - group - * AND - logical and - * OR - logical or - * NOT - logical not - * W+:, W-:, W_: - word (underscore: no need to highlight) - * P+:, P-: - phrase (minus sign: logically in NOT group) - * N+:, N-: - namespace - */ - $parsed_query = ''; - $parens_level = 0; - $terms = preg_split('/(-?".*?")/u', utf8_strtolower($query), -1, PREG_SPLIT_DELIM_CAPTURE | PREG_SPLIT_NO_EMPTY); - - foreach ($terms as $term) { - $parsed = ''; - if (preg_match('/^(-?)"(.+)"$/u', $term, $matches)) { - // phrase-include and phrase-exclude - $not = $matches[1] ? 'NOT' : ''; - $parsed = $not.ft_termParser($Indexer, $matches[2], false, true); - } else { - // fix incomplete phrase - $term = str_replace('"', ' ', $term); - - // fix parentheses - $term = str_replace(')' , ' ) ', $term); - $term = str_replace('(' , ' ( ', $term); - $term = str_replace('- (', ' -(', $term); - - // treat pipe symbols as 'OR' operators - $term = str_replace('|', ' or ', $term); - - // treat ideographic spaces (U+3000) as search term separators - // FIXME: some more separators? - $term = preg_replace('/[ \x{3000}]+/u', ' ', $term); - $term = trim($term); - if ($term === '') continue; - - $tokens = explode(' ', $term); - foreach ($tokens as $token) { - if ($token === '(') { - // parenthesis-include-open - $parsed .= '('; - ++$parens_level; - } elseif ($token === '-(') { - // parenthesis-exclude-open - $parsed .= 'NOT('; - ++$parens_level; - } elseif ($token === ')') { - // parenthesis-any-close - if ($parens_level === 0) continue; - $parsed .= ')'; - $parens_level--; - } elseif ($token === 'and') { - // logical-and (do nothing) - } elseif ($token === 'or') { - // logical-or - $parsed .= 'OR'; - } elseif (preg_match('/^(?:\^|-ns:)(.+)$/u', $token, $matches)) { - // namespace-exclude - $parsed .= 'NOT(N+:'.$matches[1].')'; - } elseif (preg_match('/^(?:@|ns:)(.+)$/u', $token, $matches)) { - // namespace-include - $parsed .= '(N+:'.$matches[1].')'; - } elseif (preg_match('/^-(.+)$/', $token, $matches)) { - // word-exclude - $parsed .= 'NOT('.ft_termParser($Indexer, $matches[1]).')'; - } else { - // word-include - $parsed .= ft_termParser($Indexer, $token); - } - } - } - $parsed_query .= $parsed; - } - - // cleanup (very sensitive) - $parsed_query .= str_repeat(')', $parens_level); - do { - $parsed_query_old = $parsed_query; - $parsed_query = preg_replace('/(NOT)?\(\)/u', '', $parsed_query); - } while ($parsed_query !== $parsed_query_old); - $parsed_query = preg_replace('/(NOT|OR)+\)/u', ')' , $parsed_query); - $parsed_query = preg_replace('/(OR)+/u' , 'OR' , $parsed_query); - $parsed_query = preg_replace('/\(OR/u' , '(' , $parsed_query); - $parsed_query = preg_replace('/^OR|OR$/u' , '' , $parsed_query); - $parsed_query = preg_replace('/\)(NOT)?\(/u' , ')AND$1(', $parsed_query); - - // adjustment: make highlightings right - $parens_level = 0; - $notgrp_levels = array(); - $parsed_query_new = ''; - $tokens = preg_split('/(NOT\(|[()])/u', $parsed_query, -1, PREG_SPLIT_DELIM_CAPTURE | PREG_SPLIT_NO_EMPTY); - foreach ($tokens as $token) { - if ($token === 'NOT(') { - $notgrp_levels[] = ++$parens_level; - } elseif ($token === '(') { - ++$parens_level; - } elseif ($token === ')') { - if ($parens_level-- === end($notgrp_levels)) array_pop($notgrp_levels); - } elseif (count($notgrp_levels) % 2 === 1) { - // turn highlight-flag off if terms are logically in "NOT" group - $token = preg_replace('/([WPN])\+\:/u', '$1-:', $token); - } - $parsed_query_new .= $token; - } - $parsed_query = $parsed_query_new; - - /** - * convert infix notation string into postfix (Reverse Polish notation) array - * by Shunting-yard algorithm - * - * see: http://en.wikipedia.org/wiki/Reverse_Polish_notation - * see: http://en.wikipedia.org/wiki/Shunting-yard_algorithm - */ - $parsed_ary = array(); - $ope_stack = array(); - $ope_precedence = array(')' => 1, 'OR' => 2, 'AND' => 3, 'NOT' => 4, '(' => 5); - $ope_regex = '/([()]|OR|AND|NOT)/u'; - - $tokens = preg_split($ope_regex, $parsed_query, -1, PREG_SPLIT_DELIM_CAPTURE | PREG_SPLIT_NO_EMPTY); - foreach ($tokens as $token) { - if (preg_match($ope_regex, $token)) { - // operator - $last_ope = end($ope_stack); - while ($last_ope !== false && $ope_precedence[$token] <= $ope_precedence[$last_ope] && $last_ope != '(') { - $parsed_ary[] = array_pop($ope_stack); - $last_ope = end($ope_stack); - } - if ($token == ')') { - array_pop($ope_stack); // this array_pop always deletes '(' - } else { - $ope_stack[] = $token; - } - } else { - // operand - $token_decoded = str_replace(array('OP', 'CP'), array('(', ')'), $token); - $parsed_ary[] = $token_decoded; - } - } - $parsed_ary = array_values(array_merge($parsed_ary, array_reverse($ope_stack))); - - // cleanup: each double "NOT" in RPN array actually does nothing - $parsed_ary_count = count($parsed_ary); - for ($i = 1; $i < $parsed_ary_count; ++$i) { - if ($parsed_ary[$i] === 'NOT' && $parsed_ary[$i - 1] === 'NOT') { - unset($parsed_ary[$i], $parsed_ary[$i - 1]); - } - } - $parsed_ary = array_values($parsed_ary); - - // build return value - $q = array(); - $q['query'] = $query; - $q['parsed_str'] = $parsed_query; - $q['parsed_ary'] = $parsed_ary; - - foreach ($q['parsed_ary'] as $token) { - if ($token[2] !== ':') continue; - $body = substr($token, 3); - - switch (substr($token, 0, 3)) { - case 'N+:': - $q['ns'][] = $body; // for backward compatibility - break; - case 'N-:': - $q['notns'][] = $body; // for backward compatibility - break; - case 'W_:': - $q['words'][] = $body; - break; - case 'W-:': - $q['words'][] = $body; - $q['not'][] = $body; // for backward compatibility - break; - case 'W+:': - $q['words'][] = $body; - $q['highlight'][] = $body; - $q['and'][] = $body; // for backward compatibility - break; - case 'P-:': - $q['phrases'][] = $body; - break; - case 'P+:': - $q['phrases'][] = $body; - $q['highlight'][] = $body; - break; - } - } - foreach (array('words', 'phrases', 'highlight', 'ns', 'notns', 'and', 'not') as $key) { - $q[$key] = empty($q[$key]) ? array() : array_values(array_unique($q[$key])); - } - - return $q; -} - -/** - * Transforms given search term into intermediate representation - * - * This function is used in ft_queryParser() and not for general purpose use. - * - * @author Kazutaka Miyasaka <kazmiya@gmail.com> - * - * @param Doku_Indexer $Indexer - * @param string $term - * @param bool $consider_asian - * @param bool $phrase_mode - * @return string - */ -function ft_termParser($Indexer, $term, $consider_asian = true, $phrase_mode = false) { - $parsed = ''; - if ($consider_asian) { - // successive asian characters need to be searched as a phrase - $words = preg_split('/('.IDX_ASIAN.'+)/u', $term, -1, PREG_SPLIT_DELIM_CAPTURE | PREG_SPLIT_NO_EMPTY); - foreach ($words as $word) { - $phrase_mode = $phrase_mode ? true : preg_match('/'.IDX_ASIAN.'/u', $word); - $parsed .= ft_termParser($Indexer, $word, false, $phrase_mode); - } - } else { - $term_noparen = str_replace(array('(', ')'), ' ', $term); - $words = $Indexer->tokenizer($term_noparen, true); - - // W_: no need to highlight - if (empty($words)) { - $parsed = '()'; // important: do not remove - } elseif ($words[0] === $term) { - $parsed = '(W+:'.$words[0].')'; - } elseif ($phrase_mode) { - $term_encoded = str_replace(array('(', ')'), array('OP', 'CP'), $term); - $parsed = '((W_:'.implode(')(W_:', $words).')(P+:'.$term_encoded.'))'; - } else { - $parsed = '((W+:'.implode(')(W+:', $words).'))'; - } - } - return $parsed; -} - -/** - * Recreate a search query string based on parsed parts, doesn't support negated phrases and `OR` searches - * - * @param array $and - * @param array $not - * @param array $phrases - * @param array $ns - * @param array $notns - * - * @return string - */ -function ft_queryUnparser_simple(array $and, array $not, array $phrases, array $ns, array $notns) { - $query = implode(' ', $and); - if (!empty($not)) { - $query .= ' -' . implode(' -', $not); - } - - if (!empty($phrases)) { - $query .= ' "' . implode('" "', $phrases) . '"'; - } - - if (!empty($ns)) { - $query .= ' @' . implode(' @', $ns); - } - - if (!empty($notns)) { - $query .= ' ^' . implode(' ^', $notns); - } - - return $query; -} - -//Setup VIM: ex: et ts=4 : |