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<?php /** * Content object implementation for representing flat text. * * This program is free software; you can redistribute it and/or modify * it under the terms of the GNU General Public License as published by * the Free Software Foundation; either version 2 of the License, or * (at your option) any later version. * * This program is distributed in the hope that it will be useful, * but WITHOUT ANY WARRANTY; without even the implied warranty of * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the * GNU General Public License for more details. * * You should have received a copy of the GNU General Public License along * with this program; if not, write to the Free Software Foundation, Inc., * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA. * http://www.gnu.org/copyleft/gpl.html * * @since 1.21 * * @file * @ingroup Content * * @author Daniel Kinzler */ namespace MediaWiki\Content; use InvalidArgumentException; use MediaWiki\Language\Language; use MediaWiki\MainConfigNames; use MediaWiki\MediaWikiServices; use MWUnknownContentModelException; use Wikimedia\Diff\Diff; /** * Content object implementation for representing flat text. * * TextContent instances are immutable * * @newable * @stable to extend * @ingroup Content */ class TextContent extends AbstractContent { /** * @var string */ protected $mText; /** * @stable to call * @param string $text * @param string $model_id */ public function __construct( $text, $model_id = CONTENT_MODEL_TEXT ) { parent::__construct( $model_id ); if ( $text === null || $text === false ) { wfWarn( "TextContent constructed with \$text = " . var_export( $text, true ) . "! " . "This may indicate an error in the caller's scope.", 2 ); $text = ''; } if ( !is_string( $text ) ) { throw new InvalidArgumentException( "TextContent expects a string in the constructor." ); } $this->mText = $text; } /** * @note Mutable subclasses MUST override this to return a copy! * * @return Content $this */ public function copy() { return $this; # NOTE: this is ok since TextContent are immutable. } /** * @stable to override * * @param int $maxlength * * @return string */ public function getTextForSummary( $maxlength = 250 ) { $text = $this->getText(); $truncatedtext = MediaWikiServices::getInstance()->getContentLanguage()-> truncateForDatabase( preg_replace( "/[\n\r]/", ' ', $text ), max( 0, $maxlength ) ); return $truncatedtext; } /** * Returns the text's size in bytes. * * @stable to override * * @return int */ public function getSize() { $text = $this->getText(); return strlen( $text ); } /** * Returns true if this content is not a redirect, and $wgArticleCountMethod * is "any". * * @stable to override * * @param bool|null $hasLinks If it is known whether this content contains links, * provide this information here, to avoid redundant parsing to find out. * * @return bool */ public function isCountable( $hasLinks = null ) { $articleCountMethod = MediaWikiServices::getInstance()->getMainConfig()->get( MainConfigNames::ArticleCountMethod ); if ( $this->isRedirect() ) { return false; } if ( $articleCountMethod === 'any' ) { return true; } return false; } /** * Returns the text represented by this Content object, as a string. * * @deprecated since 1.33 use getText() instead. * * @return string The raw text. Subclasses may guarantee a specific syntax here. */ public function getNativeData() { return $this->getText(); } /** * Returns the text represented by this Content object, as a string. * * @since 1.33 * @note This method should not be overwritten by subclasses. If a subclass find itself in * need to override this method, it should probably not be based on TextContent, but * should rather extend AbstractContent instead. * * @return string The raw text. */ public function getText() { return $this->mText; } /** * Returns the text represented by this Content object, as a string. * * @stable to override * * @return string The raw text. */ public function getTextForSearchIndex() { return $this->getText(); } /** * Returns attempts to convert this content object to wikitext, * and then returns the text string. The conversion may be lossy. * * @stable to override * * @note this allows any text-based content to be transcluded as if it was wikitext. * * @return string|false The raw text, or false if the conversion failed. */ public function getWikitextForTransclusion() { /** @var WikitextContent $wikitext */ $wikitext = $this->convert( CONTENT_MODEL_WIKITEXT, 'lossy' ); '@phan-var WikitextContent $wikitext'; if ( $wikitext ) { return $wikitext->getText(); } else { return false; } } /** * Do a "\r\n" -> "\n" and "\r" -> "\n" transformation * as well as trim trailing whitespace * * This was formerly part of Parser::preSaveTransform, but * for non-wikitext content models they probably still want * to normalize line endings without all of the other PST * changes. * * @since 1.28 * @param string $text * @return string */ public static function normalizeLineEndings( $text ) { return str_replace( [ "\r\n", "\r" ], "\n", rtrim( $text ) ); } /** * Diff this content object with another content object. * * @stable to override * @since 1.21 * * @param Content $that The other content object to compare this content object to. * @param Language|null $lang The language object to use for text segmentation. * If not given, the content language is used. * * @return Diff A diff representing the changes that would have to be * made to this content object to make it equal to $that. */ public function diff( Content $that, ?Language $lang = null ) { $this->checkModelID( $that->getModel() ); /** @var self $that */ '@phan-var self $that'; // @todo could implement this in DifferenceEngine and just delegate here? if ( !$lang ) { $lang = MediaWikiServices::getInstance()->getContentLanguage(); } $otext = $this->getText(); $ntext = $that->getText(); # Note: Use native PHP diff, external engines don't give us abstract output $ota = explode( "\n", $lang->segmentForDiff( $otext ) ); $nta = explode( "\n", $lang->segmentForDiff( $ntext ) ); $diff = new Diff( $ota, $nta ); return $diff; } /** * This implementation provides lossless conversion between content models based * on TextContent. * * @stable to override * * @param string $toModel The desired content model, use the CONTENT_MODEL_XXX flags. * @param string $lossy Flag, set to "lossy" to allow lossy conversion. If lossy conversion is not * allowed, full round-trip conversion is expected to work without losing information. * * @return Content|false A content object with the content model $toModel, or false if that * conversion is not supported. * @throws MWUnknownContentModelException * * @see Content::convert() */ public function convert( $toModel, $lossy = '' ) { $converted = parent::convert( $toModel, $lossy ); if ( $converted !== false ) { return $converted; } $toHandler = $this->getContentHandlerFactory()->getContentHandler( $toModel ); if ( $toHandler instanceof TextContentHandler ) { // NOTE: ignore content serialization format - it's just text anyway. $text = $this->getText(); $converted = $toHandler->unserializeContent( $text ); } return $converted; } } /** @deprecated class alias since 1.43 */ class_alias( TextContent::class, 'TextContent' );
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