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<?php |
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namespace dokuwiki\Ui; |
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use \dokuwiki\Form\Form; |
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class Search extends Ui |
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{ |
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protected $query; |
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protected $parsedQuery; |
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protected $pageLookupResults = array(); |
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protected $fullTextResults = array(); |
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protected $highlight = array(); |
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/** |
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* Search constructor. |
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* |
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* @param string $query the search query |
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*/ |
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public function __construct($query) |
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{ |
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$this->query = $query; |
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$Indexer = idx_get_indexer(); |
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$this->parsedQuery = ft_queryParser($Indexer, $query); |
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} |
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/** |
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* run the search |
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*/ |
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public function execute() |
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{ |
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$this->pageLookupResults = ft_pageLookup($this->query, true, useHeading('navigation')); |
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$this->fullTextResults = ft_pageSearch($this->query, $highlight); |
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$this->highlight = $highlight; |
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} |
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/** |
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* display the search result |
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* |
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* @return void |
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*/ |
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public function show() |
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{ |
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$searchHTML = ''; |
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$searchHTML .= $this->getSearchFormHTML($this->query); |
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$searchHTML .= $this->getSearchIntroHTML($this->query); |
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$searchHTML .= $this->getPageLookupHTML($this->pageLookupResults); |
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$searchHTML .= $this->getFulltextResultsHTML($this->fullTextResults, $this->highlight); |
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echo $searchHTML; |
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} |
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/** |
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* Get a form which can be used to adjust/refine the search |
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* |
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* @param string $query |
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* |
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* @return string |
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*/ |
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protected function getSearchFormHTML($query) |
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{ |
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global $lang; |
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$searchForm = (new Form())->attrs(['method' => 'get'])->addClass('search-results-form'); |
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$searchForm->setHiddenField('do', 'search'); |
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$searchForm->addFieldsetOpen()->addClass('search-results-form__fieldset'); |
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$searchForm->addTextInput('id')->val($query); |
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$searchForm->addButton('', $lang['btn_search'])->attr('type', 'submit'); |
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if ($this->isSearchAssistanceAvailable($this->parsedQuery)) { |
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$this->addSearchAssistanceElements($searchForm, $this->parsedQuery); |
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} else { |
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$searchForm->addClass('search-results-form--no-assistance'); |
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$searchForm->addTagOpen('span')->addClass('search-results-form__no-assistance-message'); |
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$searchForm->addHTML('FIXME Your query is too complex. Search assistance is unavailable. See <a href="https://doku.wiki/search">doku.wiki/search</a> for more help.'); |
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$searchForm->addTagClose('span'); |
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} |
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$searchForm->addFieldsetClose(); |
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trigger_event('SEARCH_FORM_DISPLAY', $searchForm); |
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return $searchForm->toHTML(); |
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} |
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/** |
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* Decide if the given query is simple enough to provide search assistance |
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* |
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* @param array $parsedQuery |
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* |
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* @return bool |
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*/ |
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protected function isSearchAssistanceAvailable(array $parsedQuery) |
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{ |
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if (count($parsedQuery['words']) > 1) { |
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return false; |
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} |
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if (!empty($parsedQuery['not'])) { |
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return false; |
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} |
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if (!empty($parsedQuery['phrases'])) { |
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return false; |
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} |
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if (!empty($parsedQuery['notns'])) { |
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return false; |
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} |
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if (count($parsedQuery['ns']) > 1) { |
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return false; |
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} |
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return true; |
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} |
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/** |
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* Add the elements to be used for search assistance |
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* |
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* @param Form $searchForm |
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* @param array $parsedQuery |
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*/ |
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protected function addSearchAssistanceElements(Form $searchForm, array $parsedQuery) |
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{ |
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$matchType = ''; |
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$searchTerm = null; |
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if (count($parsedQuery['words']) === 1) { |
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$searchTerm = $parsedQuery['words'][0]; |
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$firstChar = $searchTerm[0]; |
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$lastChar = substr($searchTerm, -1); |
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$matchType = 'exact'; |
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if ($firstChar === '*') { |
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$matchType = 'starts'; |
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} |
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if ($lastChar === '*') { |
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$matchType = 'ends'; |
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} |
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if ($firstChar === '*' && $lastChar === '*') { |
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$matchType = 'contains'; |
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} |
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$searchTerm = trim($searchTerm, '*'); |
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} |
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$searchForm->addTextInput( |
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'searchTerm', |
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'', |
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$searchForm->findPositionByAttribute('type', 'submit') |
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) |
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->val($searchTerm) |
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->attr('style', 'display: none;'); |
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$searchForm->addButton('toggleAssistant', 'toggle search assistant') |
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->attr('type', 'button') |
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->id('search-results-form__show-assistance-button') |
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->addClass('search-results-form__show-assistance-button'); |
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$searchForm->addTagOpen('div') |
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->addClass('js-advancedSearchOptions') |
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->attr('style', 'display: none;'); |
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$searchForm->addTagOpen('div')->addClass('search-results-form__subwrapper'); |
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$searchForm->addRadioButton('matchType', 'exact Match FM')->val('exact')->attr('checked', |
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$matchType === 'exact' ?: null); |
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$searchForm->addRadioButton('matchType', 'starts with FM')->val('starts')->attr('checked', |
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$matchType === 'starts' ?: null); |
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$searchForm->addRadioButton('matchType', 'ends with FM')->val('ends')->attr('checked', |
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$matchType === 'ends' ?: null); |
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$searchForm->addRadioButton('matchType', 'contains FM')->val('contains')->attr('checked', |
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$matchType === 'contains' ?: null); |
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$searchForm->addTagClose('div'); |
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$this->addNamespaceSelector($searchForm, $parsedQuery); |
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$searchForm->addTagClose('div'); |
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} |
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/** |
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* Add the elements for the namespace selector |
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* |
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* @param Form $searchForm |
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* @param array $parsedQuery |
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*/ |
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protected function addNamespaceSelector(Form $searchForm, array $parsedQuery) |
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{ |
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$baseNS = empty($parsedQuery['ns']) ? '' : $parsedQuery['ns'][0]; |
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$namespaces = []; |
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$searchForm->addTagOpen('div')->addClass('search-results-form__subwrapper'); |
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if ($baseNS) { |
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$searchForm->addRadioButton('namespace', '(no namespace FIXME)')->val(''); |
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$parts = [$baseNS => count($this->fullTextResults)]; |
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$upperNameSpace = $baseNS; |
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while ($upperNameSpace = getNS($upperNameSpace)) { |
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$parts[$upperNameSpace] = 0; |
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} |
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$namespaces = array_reverse($parts); |
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}; |
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$namespaces = array_merge($namespaces, $this->getAdditionalNamespacesFromResults($baseNS)); |
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foreach ($namespaces as $extraNS => $count) { |
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$label = $extraNS . ($count ? " ($count)" : ''); |
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$namespaceCB = $searchForm->addRadioButton('namespace', $label)->val($extraNS); |
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if ($extraNS === $baseNS) { |
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$namespaceCB->attr('checked', true); |
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} |
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} |
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$searchForm->addTagClose('div'); |
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} |
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/** |
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* Parse the full text results for their top namespaces below the given base namespace |
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* |
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* @param string $baseNS the namespace within which was searched, empty string for root namespace |
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* |
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* @return array an associative array with namespace => #number of found pages, sorted descending |
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*/ |
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protected function getAdditionalNamespacesFromResults($baseNS) |
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{ |
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$namespaces = []; |
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$baseNSLength = strlen($baseNS); |
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foreach ($this->fullTextResults as $page => $numberOfHits) { |
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$namespace = getNS($page); |
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if (!$namespace) { |
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continue; |
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} |
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if ($namespace === $baseNS) { |
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continue; |
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} |
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$firstColon = strpos((string)$namespace, ':', $baseNSLength + 1) ?: strlen($namespace); |
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$subtopNS = substr($namespace, 0, $firstColon); |
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if (empty($namespaces[$subtopNS])) { |
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$namespaces[$subtopNS] = 0; |
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} |
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$namespaces[$subtopNS] += 1; |
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} |
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arsort($namespaces); |
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return $namespaces; |
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} |
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/** |
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* Build the intro text for the search page |
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* |
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* @param string $query the search query |
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* |
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* @return string |
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*/ |
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protected function getSearchIntroHTML($query) |
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{ |
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global $ID, $lang; |
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$intro = p_locale_xhtml('searchpage'); |
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// allow use of placeholder in search intro |
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$pagecreateinfo = (auth_quickaclcheck($ID) >= AUTH_CREATE) ? $lang['searchcreatepage'] : ''; |
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$intro = str_replace( |
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array('@QUERY@', '@SEARCH@', '@CREATEPAGEINFO@'), |
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array(hsc(rawurlencode($query)), hsc($query), $pagecreateinfo), |
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$intro |
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); |
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return $intro; |
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} |
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/** |
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* Build HTML for a list of pages with matching pagenames |
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* |
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* @param array $data search results |
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* |
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* @return string |
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*/ |
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protected function getPageLookupHTML($data) |
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{ |
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if (empty($data)) { |
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return ''; |
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} |
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global $lang; |
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$html = '<div class="search_quickresult">'; |
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$html .= '<h3>' . $lang['quickhits'] . ':</h3>'; |
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$html .= '<ul class="search_quickhits">'; |
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foreach ($data as $id => $title) { |
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$link = html_wikilink(':' . $id); |
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$eventData = [ |
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'listItemContent' => [$link], |
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'page' => $id, |
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]; |
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trigger_event('SEARCH_RESULT_PAGELOOKUP', $eventData); |
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$html .= '<li>' . implode('', $eventData['listItemContent']) . '</li>'; |
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} |
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$html .= '</ul> '; |
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//clear float (see http://www.complexspiral.com/publications/containing-floats/) |
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$html .= '<div class="clearer"></div>'; |
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$html .= '</div>'; |
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return $html; |
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} |
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/** |
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* Build HTML for fulltext search results or "no results" message |
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* |
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* @param array $data the results of the fulltext search |
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* @param array $highlight the terms to be highlighted in the results |
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* |
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* @return string |
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*/ |
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protected function getFulltextResultsHTML($data, $highlight) |
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{ |
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global $lang; |
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if (empty($data)) { |
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return '<div class="nothing">' . $lang['nothingfound'] . '</div>'; |
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} |
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$html = ''; |
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$html .= '<dl class="search_results">'; |
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$num = 1; |
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foreach ($data as $id => $cnt) { |
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$resultLink = html_wikilink(':' . $id, null, $highlight); |
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$resultHeader = [$resultLink]; |
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$snippet = ''; |
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if ($cnt !== 0) { |
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$resultHeader[] = $cnt . ' ' . $lang['hits']; |
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if ($num < FT_SNIPPET_NUMBER) { // create snippets for the first number of matches only |
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$snippet = '<dd>' . ft_snippet($id, $highlight) . '</dd>'; |
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} |
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$num++; |
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} |
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$restrictQueryToNSLink = $this->restrictQueryToNSLink(getNS($id)); |
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if ($restrictQueryToNSLink) { |
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$resultHeader[] = $restrictQueryToNSLink; |
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} |
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$eventData = [ |
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'resultHeader' => $resultHeader, |
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'resultBody' => [$snippet], |
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'page' => $id, |
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]; |
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trigger_event('SEARCH_RESULT_FULLPAGE', $eventData); |
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$html .= '<div class="search_fullpage_result">'; |
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$html .= '<dt>' . implode(' ', $eventData['resultHeader']) . '</dt>'; |
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$html .= implode('', $eventData['resultBody']); |
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$html .= '</div>'; |
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} |
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$html .= '</dl>'; |
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return $html; |
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} |
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/** |
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* create a link to restrict the current query to a namespace |
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* |
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* @param bool|string $ns the namespace to which to restrict the query |
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* |
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* @return bool|string |
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*/ |
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protected function restrictQueryToNSLink($ns) |
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{ |
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if (!$ns) { |
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return false; |
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|
|
|
} |
368
|
|
|
if (!$this->isSearchAssistanceAvailable($this->parsedQuery)) { |
369
|
|
|
return false; |
370
|
|
|
} |
371
|
|
|
if (!empty($this->parsedQuery['ns']) && $this->parsedQuery['ns'][0] === $ns) { |
372
|
|
|
return false; |
373
|
|
|
} |
374
|
|
|
|
375
|
|
|
$newQuery = ft_queryUnparser_simple( |
376
|
|
|
$this->parsedQuery['and'], |
|
|
|
|
377
|
|
|
[], |
378
|
|
|
[], |
379
|
|
|
[$ns], |
380
|
|
|
[] |
381
|
|
|
); |
382
|
|
|
$href = wl($newQuery, ['do' => 'search']); |
383
|
|
|
$attributes = buildAttributes([ |
384
|
|
|
'rel' => 'nofollow', |
385
|
|
|
'class' => 'search_namespace_link', |
386
|
|
|
]); |
387
|
|
|
$name = '@' . $ns; |
388
|
|
|
return "<a href=\"$href\" $attributes>$name</a>"; |
389
|
|
|
} |
390
|
|
|
} |
391
|
|
|
|