mirror of
https://gerrit.wikimedia.org/r/mediawiki/extensions/ParserFunctions
synced 2024-11-27 09:41:37 +00:00
976 lines
28 KiB
PHP
976 lines
28 KiB
PHP
<?php
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namespace MediaWiki\Extension\ParserFunctions;
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use DateTime;
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use DateTimeZone;
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use Exception;
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use MediaWiki\Cache\LinkCache;
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use MediaWiki\Config\Config;
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use MediaWiki\HookContainer\HookContainer;
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use MediaWiki\Languages\LanguageConverterFactory;
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use MediaWiki\Languages\LanguageFactory;
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use MediaWiki\Languages\LanguageNameUtils;
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use MediaWiki\Parser\Parser;
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use MediaWiki\Parser\PPFrame;
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use MediaWiki\Parser\PPNode;
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use MediaWiki\Parser\Sanitizer;
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use MediaWiki\SpecialPage\SpecialPageFactory;
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use MediaWiki\Title\Title;
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use MediaWiki\Utils\MWTimestamp;
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use RepoGroup;
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use StringUtils;
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use Wikimedia\RequestTimeout\TimeoutException;
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/**
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* Parser function handlers
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*
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* @link https://www.mediawiki.org/wiki/Help:Extension:ParserFunctions
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*/
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class ParserFunctions {
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private static ?ExprParser $mExprParser = null;
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/** @var array[][][][] */
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private static array $mTimeCache = [];
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private static int $mTimeChars = 0;
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/** ~10 seconds */
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private const MAX_TIME_CHARS = 6000;
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private Config $config;
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private HookContainer $hookContainer;
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private LanguageConverterFactory $languageConverterFactory;
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private LanguageFactory $languageFactory;
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private LanguageNameUtils $languageNameUtils;
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private LinkCache $linkCache;
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private RepoGroup $repoGroup;
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private SpecialPageFactory $specialPageFactory;
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public function __construct(
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Config $config,
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HookContainer $hookContainer,
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LanguageConverterFactory $languageConverterFactory,
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LanguageFactory $languageFactory,
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LanguageNameUtils $languageNameUtils,
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LinkCache $linkCache,
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RepoGroup $repoGroup,
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SpecialPageFactory $specialPageFactory
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) {
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$this->config = $config;
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$this->hookContainer = $hookContainer;
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$this->languageConverterFactory = $languageConverterFactory;
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$this->languageFactory = $languageFactory;
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$this->languageNameUtils = $languageNameUtils;
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$this->linkCache = $linkCache;
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$this->repoGroup = $repoGroup;
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$this->specialPageFactory = $specialPageFactory;
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}
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private static function &getExprParser(): ExprParser {
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if ( self::$mExprParser === null ) {
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self::$mExprParser = new ExprParser;
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}
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return self::$mExprParser;
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}
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/**
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* {{#expr: expression }}
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*
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* @link https://www.mediawiki.org/wiki/Help:Extension:ParserFunctions##expr
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*
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* @param Parser $parser
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* @param string $expr
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* @return string
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*/
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public function expr( Parser $parser, $expr = '' ) {
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try {
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return self::getExprParser()->doExpression( $expr );
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} catch ( ExprError $e ) {
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return '<strong class="error">' . htmlspecialchars( $e->getUserFriendlyMessage() ) . '</strong>';
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}
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}
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/**
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* {{#ifexpr: expression | value if true | value if false }}
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*
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* @link https://www.mediawiki.org/wiki/Help:Extension:ParserFunctions##ifexpr
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*
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* @param Parser $parser
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* @param PPFrame $frame
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* @param PPNode[] $args
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* @return string
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*/
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public function ifexpr( Parser $parser, PPFrame $frame, array $args ) {
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$expr = isset( $args[0] ) ? trim( $frame->expand( $args[0] ) ) : '';
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$then = $args[1] ?? '';
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$else = $args[2] ?? '';
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try {
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$result = self::getExprParser()->doExpression( $expr );
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if ( is_numeric( $result ) ) {
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$result = (float)$result;
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}
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$result = $result ? $then : $else;
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} catch ( ExprError $e ) {
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return '<strong class="error">' . htmlspecialchars( $e->getUserFriendlyMessage() ) . '</strong>';
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}
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if ( is_object( $result ) ) {
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$result = trim( $frame->expand( $result ) );
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}
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return $result;
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}
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/**
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* {{#if: test string | value if test string is not empty | value if test string is empty }}
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*
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* @link https://www.mediawiki.org/wiki/Help:Extension:ParserFunctions##if
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*
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* @param Parser $parser
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* @param PPFrame $frame
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* @param PPNode[] $args
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* @return string
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*/
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public function if( Parser $parser, PPFrame $frame, array $args ) {
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$test = isset( $args[0] ) ? trim( $frame->expand( $args[0] ) ) : '';
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if ( $test !== '' ) {
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return isset( $args[1] ) ? trim( $frame->expand( $args[1] ) ) : '';
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} else {
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return isset( $args[2] ) ? trim( $frame->expand( $args[2] ) ) : '';
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}
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}
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/**
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* {{#ifeq: string 1 | string 2 | value if identical | value if different }}
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*
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* @link https://www.mediawiki.org/wiki/Help:Extension:ParserFunctions##ifeq
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*
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* @param Parser $parser
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* @param PPFrame $frame
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* @param PPNode[] $args
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* @return string
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*/
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public function ifeq( Parser $parser, PPFrame $frame, array $args ) {
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$left = isset( $args[0] ) ? self::decodeTrimExpand( $args[0], $frame ) : '';
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$right = isset( $args[1] ) ? self::decodeTrimExpand( $args[1], $frame ) : '';
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// Strict compare is not possible here. 01 should equal 1 for example.
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/** @noinspection TypeUnsafeComparisonInspection */
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if ( $left == $right ) {
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return isset( $args[2] ) ? trim( $frame->expand( $args[2] ) ) : '';
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} else {
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return isset( $args[3] ) ? trim( $frame->expand( $args[3] ) ) : '';
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}
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}
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/**
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* {{#iferror: test string | value if error | value if no error }}
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*
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* Error is when the input string contains an HTML object with class="error", as
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* generated by other parser functions such as #expr, #time and #rel2abs.
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*
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* @link https://www.mediawiki.org/wiki/Help:Extension:ParserFunctions##iferror
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*
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* @param Parser $parser
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* @param PPFrame $frame
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* @param PPNode[] $args
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* @return string
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*/
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public function iferror( Parser $parser, PPFrame $frame, array $args ) {
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$test = isset( $args[0] ) ? trim( $frame->expand( $args[0] ) ) : '';
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$then = $args[1] ?? false;
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$else = $args[2] ?? false;
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if ( preg_match(
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'/<(?:strong|span|p|div)\s(?:[^\s>]*\s+)*?class="(?:[^"\s>]*\s+)*?error(?:\s[^">]*)?"/',
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$test )
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) {
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$result = $then;
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} elseif ( $else === false ) {
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$result = $test;
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} else {
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$result = $else;
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}
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if ( $result === false ) {
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return '';
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}
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return trim( $frame->expand( $result ) );
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}
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/**
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* {{#switch: comparison string
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* | case = result
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* | case = result
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* | ...
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* | default result
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* }}
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*
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* @link https://www.mediawiki.org/wiki/Help:Extension:ParserFunctions##switch
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*
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* @param Parser $parser
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* @param PPFrame $frame
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* @param PPNode[] $args
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* @return string
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*/
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public function switch( Parser $parser, PPFrame $frame, array $args ) {
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if ( count( $args ) === 0 ) {
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return '';
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}
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$primary = self::decodeTrimExpand( array_shift( $args ), $frame );
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$found = $defaultFound = false;
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$default = null;
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$lastItemHadNoEquals = false;
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$lastItem = '';
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$mwDefault = $parser->getMagicWordFactory()->get( 'default' );
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foreach ( $args as $arg ) {
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$bits = $arg->splitArg();
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$nameNode = $bits['name'];
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$index = $bits['index'];
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$valueNode = $bits['value'];
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if ( $index === '' ) {
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# Found "="
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$lastItemHadNoEquals = false;
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if ( $found ) {
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# Multiple input match
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return trim( $frame->expand( $valueNode ) );
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}
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$test = self::decodeTrimExpand( $nameNode, $frame );
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/** @noinspection TypeUnsafeComparisonInspection */
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if ( $test == $primary ) {
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# Found a match, return now
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return trim( $frame->expand( $valueNode ) );
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}
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if ( $defaultFound || $mwDefault->matchStartToEnd( $test ) ) {
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$default = $valueNode;
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$defaultFound = false;
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} # else wrong case, continue
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} else {
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# Multiple input, single output
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# If the value matches, set a flag and continue
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$lastItemHadNoEquals = true;
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// $lastItem is an "out" variable
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$decodedTest = self::decodeTrimExpand( $valueNode, $frame, $lastItem );
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/** @noinspection TypeUnsafeComparisonInspection */
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if ( $decodedTest == $primary ) {
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$found = true;
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} elseif ( $mwDefault->matchStartToEnd( $decodedTest ) ) {
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$defaultFound = true;
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}
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}
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}
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# Default case
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# Check if the last item had no = sign, thus specifying the default case
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if ( $lastItemHadNoEquals ) {
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return $lastItem;
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}
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if ( $default === null ) {
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return '';
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}
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return trim( $frame->expand( $default ) );
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}
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/**
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* {{#rel2abs: path }} or {{#rel2abs: path | base path }}
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*
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* Returns the absolute path to a subpage, relative to the current article
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* title. Treats titles as slash-separated paths.
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*
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* Following subpage link syntax instead of standard path syntax, an
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* initial slash is treated as a relative path, and vice versa.
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*
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* @link https://www.mediawiki.org/wiki/Help:Extension:ParserFunctions##rel2abs
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*
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* @param Parser $parser
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* @param string $to
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* @param string $from
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*
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* @return string
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*/
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public function rel2abs( Parser $parser, $to = '', $from = '' ) {
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$from = trim( $from );
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if ( $from === '' ) {
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$from = $parser->getTitle()->getPrefixedText();
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}
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$to = rtrim( $to, ' /' );
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// if we have an empty path, or just one containing a dot
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if ( $to === '' || $to === '.' ) {
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return $from;
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}
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// if the path isn't relative
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if ( substr( $to, 0, 1 ) !== '/' &&
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substr( $to, 0, 2 ) !== './' &&
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substr( $to, 0, 3 ) !== '../' &&
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$to !== '..'
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) {
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$from = '';
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}
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// Make a long path, containing both, enclose it in /.../
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$fullPath = '/' . $from . '/' . $to . '/';
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// remove redundant current path dots
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$fullPath = preg_replace( '!/(\./)+!', '/', $fullPath );
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// remove double slashes
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$fullPath = preg_replace( '!/{2,}!', '/', $fullPath );
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// remove the enclosing slashes now
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$fullPath = trim( $fullPath, '/' );
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$exploded = explode( '/', $fullPath );
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$newExploded = [];
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foreach ( $exploded as $current ) {
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if ( $current === '..' ) { // removing one level
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if ( !count( $newExploded ) ) {
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// attempted to access a node above root node
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$msg = $parser->msg( 'pfunc_rel2abs_invalid_depth', $fullPath )
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->escaped();
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return '<strong class="error">' . $msg . '</strong>';
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}
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// remove last level from the stack
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array_pop( $newExploded );
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} else {
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// add the current level to the stack
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$newExploded[] = $current;
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}
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}
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// we can now join it again
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return implode( '/', $newExploded );
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}
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private function ifexistInternal( Parser $parser, string $titletext ): bool {
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$title = Title::newFromText( $titletext );
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$this->languageConverterFactory->getLanguageConverter( $parser->getContentLanguage() )
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->findVariantLink( $titletext, $title, true );
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if ( !$title ) {
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return false;
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}
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if ( $title->getNamespace() === NS_MEDIA ) {
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/* If namespace is specified as NS_MEDIA, then we want to
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* check the physical file, not the "description" page.
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*/
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if ( !$parser->incrementExpensiveFunctionCount() ) {
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return false;
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}
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$file = $this->repoGroup->findFile( $title );
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if ( !$file ) {
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$parser->getOutput()->addImage(
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$title->getDBKey(), false, false );
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return false;
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}
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$parser->getOutput()->addImage(
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$file->getName(), $file->getTimestamp(), $file->getSha1() );
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return $file->exists();
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}
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if ( $title->isSpecialPage() ) {
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/* Don't bother with the count for special pages,
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* since their existence can be checked without
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* accessing the database.
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*/
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return $this->specialPageFactory->exists( $title->getDBkey() );
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}
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if ( $title->isExternal() ) {
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/* Can't check the existence of pages on other sites,
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* so just return false. Makes a sort of sense, since
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* they don't exist _locally_.
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*/
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return false;
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}
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$pdbk = $title->getPrefixedDBkey();
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$id = $this->linkCache->getGoodLinkID( $pdbk );
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if ( $id !== 0 ) {
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$parser->getOutput()->addLink( $title, $id );
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return true;
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}
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if ( $this->linkCache->isBadLink( $pdbk ) ) {
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$parser->getOutput()->addLink( $title, 0 );
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return false;
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}
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if ( !$parser->incrementExpensiveFunctionCount() ) {
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return false;
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}
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$id = $title->getArticleID();
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$parser->getOutput()->addLink( $title, $id );
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// bug 70495: don't just check whether the ID != 0
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return $title->exists();
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}
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/**
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* {{#ifexist: page title | value if exists | value if doesn't exist }}
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*
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* @link https://www.mediawiki.org/wiki/Help:Extension:ParserFunctions##ifexist
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*
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* @param Parser $parser
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* @param PPFrame $frame
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* @param PPNode[] $args
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* @return string
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*/
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public function ifexist( Parser $parser, PPFrame $frame, array $args ) {
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$title = isset( $args[0] ) ? trim( $frame->expand( $args[0] ) ) : '';
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$then = $args[1] ?? null;
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$else = $args[2] ?? null;
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$result = $this->ifexistInternal( $parser, $title ) ? $then : $else;
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if ( $result === null ) {
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return '';
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}
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return trim( $frame->expand( $result ) );
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}
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/**
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* Used by time() and localTime()
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*/
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private function timeCommon(
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Parser $parser, PPFrame $frame, string $format, string $date, string $language, bool $local
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): string {
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$this->hookContainer->register(
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'ParserClearState',
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static function () {
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self::$mTimeChars = 0;
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}
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);
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if ( $date === '' ) {
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$cacheKey = $parser->getOptions()->getTimestamp();
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$timestamp = new MWTimestamp( $cacheKey );
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$date = $timestamp->getTimestamp( TS_ISO_8601 );
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$useTTL = true;
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} else {
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$cacheKey = $date;
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$useTTL = false;
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}
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if ( isset( self::$mTimeCache[$format][$cacheKey][$language][(int)$local] ) ) {
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$cachedVal = self::$mTimeCache[$format][$cacheKey][$language][(int)$local];
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if ( $useTTL && $cachedVal[1] !== null ) {
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$frame->setTTL( $cachedVal[1] );
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}
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return $cachedVal[0];
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}
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# compute the timestamp string $ts
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# PHP >= 5.2 can handle dates before 1970 or after 2038 using the DateTime object
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$invalidTime = false;
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# the DateTime constructor must be used because it throws exceptions
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# when errors occur, whereas date_create appears to just output a warning
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# that can't really be detected from within the code
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try {
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# Default input timezone is UTC.
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$utc = new DateTimeZone( 'UTC' );
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# Correct for DateTime interpreting 'XXXX' as XX:XX o'clock
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if ( preg_match( '/^[0-9]{4}$/', $date ) ) {
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$date = '00:00 ' . $date;
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}
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# Parse date
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# UTC is a default input timezone.
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$dateObject = new DateTime( $date, $utc );
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# Set output timezone.
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if ( $local ) {
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$tz = new DateTimeZone(
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$this->config->get( 'Localtimezone' ) ??
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date_default_timezone_get()
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);
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} else {
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$tz = $utc;
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}
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$dateObject->setTimezone( $tz );
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# Generate timestamp
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$ts = $dateObject->format( 'YmdHis' );
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} catch ( TimeoutException $ex ) {
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// Unfortunately DateTime throws a generic Exception, but we can't
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// ignore an exception generated by the RequestTimeout library.
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throw $ex;
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} catch ( Exception $ex ) {
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$invalidTime = true;
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}
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$ttl = null;
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# format the timestamp and return the result
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if ( $invalidTime ) {
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$result = '<strong class="error">' .
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$parser->msg( 'pfunc_time_error' )->escaped() .
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'</strong>';
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} else {
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self::$mTimeChars += strlen( $format );
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if ( self::$mTimeChars > self::MAX_TIME_CHARS ) {
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return '<strong class="error">' .
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$parser->msg( 'pfunc_time_too_long' )->escaped() .
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'</strong>';
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}
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if ( $ts < 0 ) { // Language can't deal with BC years
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return '<strong class="error">' .
|
|
$parser->msg( 'pfunc_time_too_small' )->escaped() .
|
|
'</strong>';
|
|
}
|
|
if ( $ts >= 100000000000000 ) { // Language can't deal with years after 9999
|
|
return '<strong class="error">' .
|
|
$parser->msg( 'pfunc_time_too_big' )->escaped() .
|
|
'</strong>';
|
|
}
|
|
|
|
$langObject = $this->languageFactory->getLanguage(
|
|
$this->normalizeLangCode( $parser, $language ) );
|
|
$result = $langObject->sprintfDate( $format, $ts, $tz, $ttl );
|
|
}
|
|
self::$mTimeCache[$format][$cacheKey][$language][(int)$local] = [ $result, $ttl ];
|
|
if ( $useTTL && $ttl !== null ) {
|
|
$frame->setTTL( $ttl );
|
|
}
|
|
return $result;
|
|
}
|
|
|
|
/**
|
|
* Convert an input string to a known language code for time formatting
|
|
*/
|
|
private function normalizeLangCode( Parser $parser, string $langCode ): string {
|
|
if ( $langCode !== '' && $this->languageNameUtils->isKnownLanguageTag( $langCode ) ) {
|
|
return $langCode;
|
|
} else {
|
|
return $parser->getTargetLanguage()->getCode();
|
|
}
|
|
}
|
|
|
|
/**
|
|
* {{#time: format string }}
|
|
* {{#time: format string | date/time object }}
|
|
* {{#time: format string | date/time object | language code }}
|
|
*
|
|
* @link https://www.mediawiki.org/wiki/Help:Extension:ParserFunctions##time
|
|
*
|
|
* @param Parser $parser
|
|
* @param PPFrame $frame
|
|
* @param PPNode[] $args
|
|
* @return string
|
|
*/
|
|
public function time( Parser $parser, PPFrame $frame, array $args ) {
|
|
$format = isset( $args[0] ) ? trim( $frame->expand( $args[0] ) ) : '';
|
|
$date = isset( $args[1] ) ? trim( $frame->expand( $args[1] ) ) : '';
|
|
$language = isset( $args[2] ) ? trim( $frame->expand( $args[2] ) ) : '';
|
|
$local = isset( $args[3] ) && trim( $frame->expand( $args[3] ) );
|
|
return $this->timeCommon( $parser, $frame, $format, $date, $language, $local );
|
|
}
|
|
|
|
/**
|
|
* {{#timel: ... }}
|
|
*
|
|
* Identical to {{#time: ... }}, except that it uses the local time of the wiki
|
|
* (as set in $wgLocaltimezone) when no date is given.
|
|
*
|
|
* @link https://www.mediawiki.org/wiki/Help:Extension:ParserFunctions##timel
|
|
*
|
|
* @param Parser $parser
|
|
* @param PPFrame $frame
|
|
* @param PPNode[] $args
|
|
* @return string
|
|
*/
|
|
public function localTime( Parser $parser, PPFrame $frame, array $args ) {
|
|
$format = isset( $args[0] ) ? trim( $frame->expand( $args[0] ) ) : '';
|
|
$date = isset( $args[1] ) ? trim( $frame->expand( $args[1] ) ) : '';
|
|
$language = isset( $args[2] ) ? trim( $frame->expand( $args[2] ) ) : '';
|
|
return $this->timeCommon( $parser, $frame, $format, $date, $language, true );
|
|
}
|
|
|
|
/**
|
|
* Formatted time -- time with a symbolic rather than explicit format
|
|
*
|
|
* @param Parser $parser
|
|
* @param PPFrame $frame
|
|
* @param array $args
|
|
* @return string
|
|
*/
|
|
public function timef( Parser $parser, PPFrame $frame, array $args ) {
|
|
return $this->timefCommon( $parser, $frame, $args, false );
|
|
}
|
|
|
|
/**
|
|
* Formatted time -- time with a symbolic rather than explicit format
|
|
* Using the local timezone of the wiki.
|
|
*
|
|
* @param Parser $parser
|
|
* @param PPFrame $frame
|
|
* @param array $args
|
|
* @return string
|
|
*/
|
|
public function timefl( Parser $parser, PPFrame $frame, array $args ) {
|
|
return $this->timefCommon( $parser, $frame, $args, true );
|
|
}
|
|
|
|
/**
|
|
* Helper for timef and timefl
|
|
*/
|
|
private function timefCommon( Parser $parser, PPFrame $frame, array $args, bool $local ): string {
|
|
$date = isset( $args[0] ) ? trim( $frame->expand( $args[0] ) ) : '';
|
|
$inputType = isset( $args[1] ) ? trim( $frame->expand( $args[1] ) ) : '';
|
|
|
|
if ( $inputType !== '' ) {
|
|
$types = $parser->getMagicWordFactory()->newArray( [
|
|
'timef-time',
|
|
'timef-date',
|
|
'timef-both',
|
|
'timef-pretty'
|
|
] );
|
|
$id = $types->matchStartToEnd( $inputType );
|
|
if ( $id === false ) {
|
|
return '<strong class="error">' .
|
|
wfMessage( 'pfunc_timef_bad_format' ) .
|
|
'</strong>';
|
|
}
|
|
$type = str_replace( 'timef-', '', $id );
|
|
} else {
|
|
$type = 'both';
|
|
}
|
|
|
|
$langCode = isset( $args[2] ) ? trim( $frame->expand( $args[2] ) ) : '';
|
|
$langCode = $this->normalizeLangCode( $parser, $langCode );
|
|
$lang = $this->languageFactory->getLanguage( $langCode );
|
|
$format = $lang->getDateFormatString( $type, 'default' );
|
|
return $this->timeCommon( $parser, $frame, $format, $date, $langCode, $local );
|
|
}
|
|
|
|
/**
|
|
* Obtain a specified number of slash-separated parts of a title,
|
|
* e.g. {{#titleparts:Hello/World|1}} => "Hello"
|
|
*
|
|
* @link https://www.mediawiki.org/wiki/Help:Extension:ParserFunctions##titleparts
|
|
*
|
|
* @param Parser $parser Parent parser
|
|
* @param string $title Title to split
|
|
* @param string|int $parts Number of parts to keep
|
|
* @param string|int $offset Offset starting at 1
|
|
* @return string
|
|
*/
|
|
public function titleparts( Parser $parser, $title = '', $parts = 0, $offset = 0 ) {
|
|
$parts = (int)$parts;
|
|
$offset = (int)$offset;
|
|
$ntitle = Title::newFromText( $title );
|
|
if ( !$ntitle ) {
|
|
return $title;
|
|
}
|
|
|
|
$bits = explode( '/', $ntitle->getPrefixedText(), 25 );
|
|
if ( $offset > 0 ) {
|
|
--$offset;
|
|
}
|
|
return implode( '/', array_slice( $bits, $offset, $parts ?: null ) );
|
|
}
|
|
|
|
/**
|
|
* Verifies parameter is less than max string length.
|
|
*/
|
|
private function checkLength( string $text ): bool {
|
|
return mb_strlen( $text ) < $this->config->get( 'PFStringLengthLimit' );
|
|
}
|
|
|
|
/**
|
|
* Generates error message. Called when string is too long.
|
|
*/
|
|
private function tooLongError( Parser $parser ): string {
|
|
$msg = $parser->msg( 'pfunc_string_too_long' )
|
|
->numParams( $this->config->get( 'PFStringLengthLimit' ) );
|
|
return '<strong class="error">' . $msg->escaped() . '</strong>';
|
|
}
|
|
|
|
/**
|
|
* {{#len:string}}
|
|
*
|
|
* Reports number of characters in string.
|
|
*
|
|
* @param Parser $parser
|
|
* @param string $inStr
|
|
* @return int
|
|
*/
|
|
public function runLen( Parser $parser, $inStr = '' ) {
|
|
$inStr = $parser->killMarkers( (string)$inStr );
|
|
return mb_strlen( $inStr );
|
|
}
|
|
|
|
/**
|
|
* {{#pos: string | needle | offset}}
|
|
*
|
|
* Finds first occurrence of "needle" in "string" starting at "offset".
|
|
*
|
|
* Note: If the needle is an empty string, single space is used instead.
|
|
* Note: If the needle is not found, empty string is returned.
|
|
* @param Parser $parser
|
|
* @param string $inStr
|
|
* @param string $inNeedle
|
|
* @param string|int $inOffset
|
|
* @return int|string
|
|
*/
|
|
public function runPos( Parser $parser, $inStr = '', $inNeedle = '', $inOffset = 0 ) {
|
|
$inStr = $parser->killMarkers( (string)$inStr );
|
|
$inNeedle = $parser->killMarkers( (string)$inNeedle );
|
|
|
|
if ( !$this->checkLength( $inStr ) ||
|
|
!$this->checkLength( $inNeedle ) ) {
|
|
return $this->tooLongError( $parser );
|
|
}
|
|
|
|
if ( $inNeedle === '' ) {
|
|
$inNeedle = ' ';
|
|
}
|
|
|
|
$pos = mb_strpos( $inStr, $inNeedle, min( (int)$inOffset, mb_strlen( $inStr ) ) );
|
|
if ( $pos === false ) {
|
|
$pos = '';
|
|
}
|
|
|
|
return $pos;
|
|
}
|
|
|
|
/**
|
|
* {{#rpos: string | needle}}
|
|
*
|
|
* Finds last occurrence of "needle" in "string".
|
|
*
|
|
* Note: If the needle is an empty string, single space is used instead.
|
|
* Note: If the needle is not found, -1 is returned.
|
|
* @param Parser $parser
|
|
* @param string $inStr
|
|
* @param string $inNeedle
|
|
* @return int|string
|
|
*/
|
|
public function runRPos( Parser $parser, $inStr = '', $inNeedle = '' ) {
|
|
$inStr = $parser->killMarkers( (string)$inStr );
|
|
$inNeedle = $parser->killMarkers( (string)$inNeedle );
|
|
|
|
if ( !$this->checkLength( $inStr ) ||
|
|
!$this->checkLength( $inNeedle ) ) {
|
|
return $this->tooLongError( $parser );
|
|
}
|
|
|
|
if ( $inNeedle === '' ) {
|
|
$inNeedle = ' ';
|
|
}
|
|
|
|
$pos = mb_strrpos( $inStr, $inNeedle );
|
|
if ( $pos === false ) {
|
|
$pos = -1;
|
|
}
|
|
|
|
return $pos;
|
|
}
|
|
|
|
/**
|
|
* {{#sub: string | start | length }}
|
|
*
|
|
* Returns substring of "string" starting at "start" and having
|
|
* "length" characters.
|
|
*
|
|
* Note: If length is zero, the rest of the input is returned.
|
|
* Note: A negative value for "start" operates from the end of the
|
|
* "string".
|
|
* Note: A negative value for "length" returns a string reduced in
|
|
* length by that amount.
|
|
*
|
|
* @param Parser $parser
|
|
* @param string $inStr
|
|
* @param string|int $inStart
|
|
* @param string|int $inLength
|
|
* @return string
|
|
*/
|
|
public function runSub( Parser $parser, $inStr = '', $inStart = 0, $inLength = 0 ) {
|
|
$inStr = $parser->killMarkers( (string)$inStr );
|
|
|
|
if ( !$this->checkLength( $inStr ) ) {
|
|
return $this->tooLongError( $parser );
|
|
}
|
|
|
|
if ( (int)$inLength === 0 ) {
|
|
$result = mb_substr( $inStr, (int)$inStart );
|
|
} else {
|
|
$result = mb_substr( $inStr, (int)$inStart, (int)$inLength );
|
|
}
|
|
|
|
return $result;
|
|
}
|
|
|
|
/**
|
|
* {{#count: string | substr }}
|
|
*
|
|
* Returns number of occurrences of "substr" in "string".
|
|
*
|
|
* Note: If "substr" is empty, a single space is used.
|
|
*
|
|
* @param Parser $parser
|
|
* @param string $inStr
|
|
* @param string $inSubStr
|
|
* @return int|string
|
|
*/
|
|
public function runCount( Parser $parser, $inStr = '', $inSubStr = '' ) {
|
|
$inStr = $parser->killMarkers( (string)$inStr );
|
|
$inSubStr = $parser->killMarkers( (string)$inSubStr );
|
|
|
|
if ( !$this->checkLength( $inStr ) ||
|
|
!$this->checkLength( $inSubStr ) ) {
|
|
return $this->tooLongError( $parser );
|
|
}
|
|
|
|
if ( $inSubStr === '' ) {
|
|
$inSubStr = ' ';
|
|
}
|
|
|
|
$result = mb_substr_count( $inStr, $inSubStr );
|
|
|
|
return $result;
|
|
}
|
|
|
|
/**
|
|
* {{#replace:string | from | to | limit }}
|
|
*
|
|
* Replaces each occurrence of "from" in "string" with "to".
|
|
* At most "limit" replacements are performed.
|
|
*
|
|
* Note: Armored against replacements that would generate huge strings.
|
|
* Note: If "from" is an empty string, single space is used instead.
|
|
*
|
|
* @param Parser $parser
|
|
* @param string $inStr
|
|
* @param string $inReplaceFrom
|
|
* @param string $inReplaceTo
|
|
* @param string|int $inLimit
|
|
* @return string
|
|
*/
|
|
public function runReplace( Parser $parser, $inStr = '',
|
|
$inReplaceFrom = '', $inReplaceTo = '', $inLimit = -1 ) {
|
|
$inStr = $parser->killMarkers( (string)$inStr );
|
|
$inReplaceFrom = $parser->killMarkers( (string)$inReplaceFrom );
|
|
$inReplaceTo = $parser->killMarkers( (string)$inReplaceTo );
|
|
|
|
if ( !$this->checkLength( $inStr ) ||
|
|
!$this->checkLength( $inReplaceFrom ) ||
|
|
!$this->checkLength( $inReplaceTo ) ) {
|
|
return $this->tooLongError( $parser );
|
|
}
|
|
|
|
if ( $inReplaceFrom === '' ) {
|
|
$inReplaceFrom = ' ';
|
|
}
|
|
|
|
// Precompute limit to avoid generating enormous string:
|
|
$diff = mb_strlen( $inReplaceTo ) - mb_strlen( $inReplaceFrom );
|
|
if ( $diff > 0 ) {
|
|
$limit = (int)( ( $this->config->get( 'PFStringLengthLimit' ) - mb_strlen( $inStr ) ) / $diff ) + 1;
|
|
} else {
|
|
$limit = -1;
|
|
}
|
|
|
|
$inLimit = (int)$inLimit;
|
|
if ( $inLimit >= 0 ) {
|
|
if ( $limit > $inLimit || $limit == -1 ) {
|
|
$limit = $inLimit;
|
|
}
|
|
}
|
|
|
|
// Use regex to allow limit and handle UTF-8 correctly.
|
|
$inReplaceFrom = preg_quote( $inReplaceFrom, '/' );
|
|
$inReplaceTo = StringUtils::escapeRegexReplacement( $inReplaceTo );
|
|
|
|
$result = preg_replace( '/' . $inReplaceFrom . '/u',
|
|
$inReplaceTo, $inStr, $limit );
|
|
|
|
if ( !$this->checkLength( $result ) ) {
|
|
return $this->tooLongError( $parser );
|
|
}
|
|
|
|
return $result;
|
|
}
|
|
|
|
/**
|
|
* {{#explode:string | delimiter | position | limit}}
|
|
*
|
|
* Breaks "string" into chunks separated by "delimiter" and returns the
|
|
* chunk identified by "position".
|
|
*
|
|
* Note: Negative position can be used to specify tokens from the end.
|
|
* Note: If the divider is an empty string, single space is used instead.
|
|
* Note: Empty string is returned if there are not enough exploded chunks.
|
|
*
|
|
* @param Parser $parser
|
|
* @param string $inStr
|
|
* @param string $inDiv
|
|
* @param string|int $inPos
|
|
* @param string|null $inLim
|
|
* @return string
|
|
*/
|
|
public function runExplode(
|
|
Parser $parser, $inStr = '', $inDiv = '', $inPos = 0, $inLim = null
|
|
) {
|
|
$inStr = $parser->killMarkers( (string)$inStr );
|
|
$inDiv = $parser->killMarkers( (string)$inDiv );
|
|
|
|
if ( $inDiv === '' ) {
|
|
$inDiv = ' ';
|
|
}
|
|
|
|
if ( !$this->checkLength( $inStr ) ||
|
|
!$this->checkLength( $inDiv ) ) {
|
|
return $this->tooLongError( $parser );
|
|
}
|
|
|
|
$inDiv = preg_quote( $inDiv, '/' );
|
|
|
|
$matches = preg_split( '/' . $inDiv . '/u', $inStr, (int)$inLim );
|
|
|
|
if ( $inPos >= 0 && isset( $matches[$inPos] ) ) {
|
|
$result = $matches[$inPos];
|
|
} elseif ( $inPos < 0 && isset( $matches[count( $matches ) + $inPos] ) ) {
|
|
$result = $matches[count( $matches ) + $inPos];
|
|
} else {
|
|
$result = '';
|
|
}
|
|
|
|
return $result;
|
|
}
|
|
|
|
/**
|
|
* {{#urldecode:string}}
|
|
*
|
|
* Decodes URL-encoded (like%20that) strings.
|
|
*
|
|
* @param Parser $parser
|
|
* @param string $inStr
|
|
* @return string
|
|
*/
|
|
public function runUrlDecode( Parser $parser, $inStr = '' ) {
|
|
$inStr = $parser->killMarkers( (string)$inStr );
|
|
if ( !$this->checkLength( $inStr ) ) {
|
|
return $this->tooLongError( $parser );
|
|
}
|
|
|
|
return urldecode( $inStr );
|
|
}
|
|
|
|
/**
|
|
* Take a PPNode (-ish thing), expand it, remove entities, and trim.
|
|
*
|
|
* For use when doing string comparisions, where user expects entities
|
|
* to be equal for what they stand for (e.g. comparisions with {{PAGENAME}})
|
|
*
|
|
* @param PPNode|string $obj Thing to expand
|
|
* @param PPFrame $frame
|
|
* @param string &$trimExpanded @phan-output-reference Expanded and trimmed version of PPNode,
|
|
* but with char refs intact
|
|
* @return string The trimmed, expanded and entity reference decoded version of the PPNode
|
|
*/
|
|
private static function decodeTrimExpand( $obj, PPFrame $frame, string &$trimExpanded = '' ): string {
|
|
$expanded = $frame->expand( $obj );
|
|
$trimExpanded = trim( $expanded );
|
|
return trim( Sanitizer::decodeCharReferences( $expanded ) );
|
|
}
|
|
}
|