ApiQueryTags.php

Go to the documentation of this file.

<?php
class ApiQueryTags extends ApiQueryBase {
 
    public function __construct( ApiQuery $query, $moduleName ) {
        parent::__construct( $query, $moduleName, 'tg' );
    }
 
    public function execute() {
        $params = $this->extractRequestParams();
 
        $prop = array_flip( $params['prop'] );
 
        $fld_displayname = isset( $prop['displayname'] );
        $fld_description = isset( $prop['description'] );
        $fld_hitcount = isset( $prop['hitcount'] );
        $fld_defined = isset( $prop['defined'] );
        $fld_source = isset( $prop['source'] );
        $fld_active = isset( $prop['active'] );
 
        $limit = $params['limit'];
        $result = $this->getResult();
 
        $softwareDefinedTags = array_fill_keys( ChangeTags::listSoftwareDefinedTags(), 0 );
        $explicitlyDefinedTags = array_fill_keys( ChangeTags::listExplicitlyDefinedTags(), 0 );
        $softwareActivatedTags = array_fill_keys( ChangeTags::listSoftwareActivatedTags(), 0 );
        $tagStats = ChangeTags::tagUsageStatistics();
 
        $tagHitcounts = array_merge( $softwareDefinedTags, $explicitlyDefinedTags, $tagStats );
        $tags = array_keys( $tagHitcounts );
 
        # Fetch defined tags that aren't past the continuation
        if ( $params['continue'] !== null ) {
            $cont = $params['continue'];
            $tags = array_filter( $tags, function ( $v ) use ( $cont ) {
                return $v >= $cont;
            } );
        }
 
        # Now make sure the array is sorted for proper continuation
        sort( $tags );
 
        $count = 0;
        foreach ( $tags as $tagName ) {
            if ( ++$count > $limit ) {
                $this->setContinueEnumParameter( 'continue', $tagName );
                break;
            }
 
            $tag = [];
            $tag['name'] = $tagName;
 
            if ( $fld_displayname ) {
                $tag['displayname'] = ChangeTags::tagDescription( $tagName, $this );
            }
 
            if ( $fld_description ) {
                $msg = $this->msg( "tag-$tagName-description" );
                $tag['description'] = $msg->exists() ? $msg->text() : '';
            }
 
            if ( $fld_hitcount ) {
                $tag['hitcount'] = (int)$tagHitcounts[$tagName];
            }
 
            $isSoftware = isset( $softwareDefinedTags[$tagName] );
            $isExplicit = isset( $explicitlyDefinedTags[$tagName] );
 
            if ( $fld_defined ) {
                $tag['defined'] = $isSoftware || $isExplicit;
            }
 
            if ( $fld_source ) {
                $tag['source'] = [];
                if ( $isSoftware ) {
                    // TODO: Can we change this to 'software'?
                    $tag['source'][] = 'extension';
                }
                if ( $isExplicit ) {
                    $tag['source'][] = 'manual';
                }
            }
 
            if ( $fld_active ) {
                $tag['active'] = $isExplicit || isset( $softwareActivatedTags[$tagName] );
            }
 
            $fit = $result->addValue( [ 'query', $this->getModuleName() ], null, $tag );
            if ( !$fit ) {
                $this->setContinueEnumParameter( 'continue', $tagName );
                break;
            }
        }
 
        $result->addIndexedTagName( [ 'query', $this->getModuleName() ], 'tag' );
    }
 
    public function getCacheMode( $params ) {
        return 'public';
    }
 
    public function getAllowedParams() {
        return [
            'continue' => [
                ApiBase::PARAM_HELP_MSG => 'api-help-param-continue',
            ],
            'limit' => [
                ApiBase::PARAM_DFLT => 10,
                ApiBase::PARAM_TYPE => 'limit',
                ApiBase::PARAM_MIN => 1,
                ApiBase::PARAM_MAX => ApiBase::LIMIT_BIG1,
                ApiBase::PARAM_MAX2 => ApiBase::LIMIT_BIG2
            ],
            'prop' => [
                ApiBase::PARAM_DFLT => '',
                ApiBase::PARAM_TYPE => [
                    'displayname',
                    'description',
                    'hitcount',
                    'defined',
                    'source',
                    'active',
                ],
                ApiBase::PARAM_ISMULTI => true,
                ApiBase::PARAM_HELP_MSG_PER_VALUE => [],
            ]
        ];
    }
 
    protected function getExamplesMessages() {
        return [
            'action=query&list=tags&tgprop=displayname|description|hitcount|defined'
                => 'apihelp-query+tags-example-simple',
        ];
    }
 
    public function getHelpUrls() {
        return 'https://www.mediawiki.org/wiki/Special:MyLanguage/API:Tags';
    }
}