mirror of
https://gerrit.wikimedia.org/r/mediawiki/extensions/Cite
synced 2024-11-23 22:45:20 +00:00
342a3a0ec3
There seems to be no reason for this to be a member function Per suggestion of Ori, It should also be clearer it is a getter so it is now prefixed with get There are no consumers according to Github so a rename is safe Change-Id: I414959d4cc107135ccbd0739f2fc7d62ca8d04c5
1391 lines
40 KiB
PHP
1391 lines
40 KiB
PHP
<?php
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// @codingStandardsIgnoreStart
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/**#@+
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* A parser extension that adds two tags, <ref> and <references> for adding
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* citations to pages
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*
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* @ingroup Extensions
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*
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* @link http://www.mediawiki.org/wiki/Extension:Cite/Cite.php Documentation
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* @link http://www.w3.org/TR/html4/struct/text.html#edef-CITE <cite> definition in HTML
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* @link http://www.w3.org/TR/2005/WD-xhtml2-20050527/mod-text.html#edef_text_cite <cite> definition in XHTML 2.0
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*
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* @bug 4579
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*
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* @author Ævar Arnfjörð Bjarmason <avarab@gmail.com>
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* @copyright Copyright © 2005, Ævar Arnfjörð Bjarmason
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* @license http://www.gnu.org/copyleft/gpl.html GNU General Public License 2.0 or later
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*/
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// @codingStandardsIgnoreEnd
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/**
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* WARNING: MediaWiki core hardcodes this class name to check if the
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* Cite extension is installed. See T89151.
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*/
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class Cite {
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/**
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* @todo document
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*/
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const DEFAULT_GROUP = '';
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/**
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* Maximum storage capacity for pp_value field of page_props table
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* @todo Find a way to retrieve this information from the DBAL
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*/
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const MAX_STORAGE_LENGTH = 65535; // Size of MySQL 'blob' field
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/**
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* Key used for storage in parser output's ExtensionData and ObjectCache
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*/
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const EXT_DATA_KEY = 'Cite:References';
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/**
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* Version number in case we change the data structure in the future
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*/
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const DATA_VERSION_NUMBER = 1;
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/**
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* Cache duration set when parsing a page with references
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*/
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const CACHE_DURATION_ONPARSE = 3600; // 1 hour
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/**
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* Cache duration set when fetching references from db
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*/
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const CACHE_DURATION_ONFETCH = 18000; // 5 hours
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/**#@+
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* @access private
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*/
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/**
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* Datastructure representing <ref> input, in the format of:
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* <code>
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* array(
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* 'user supplied' => array(
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* 'text' => 'user supplied reference & key',
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* 'count' => 1, // occurs twice
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* 'number' => 1, // The first reference, we want
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* // all occourances of it to
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* // use the same number
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* ),
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* 0 => 'Anonymous reference',
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* 1 => 'Another anonymous reference',
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* 'some key' => array(
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* 'text' => 'this one occurs once'
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* 'count' => 0,
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* 'number' => 4
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* ),
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* 3 => 'more stuff'
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* );
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* </code>
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*
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* This works because:
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* * PHP's datastructures are guaranteed to be returned in the
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* order that things are inserted into them (unless you mess
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* with that)
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* * User supplied keys can't be integers, therefore avoiding
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* conflict with anonymous keys
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*
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* @var array
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**/
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public $mRefs = array();
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/**
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* Count for user displayed output (ref[1], ref[2], ...)
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*
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* @var int
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*/
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public $mOutCnt = 0;
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public $mGroupCnt = array();
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/**
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* Counter to track the total number of (useful) calls to either the
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* ref or references tag hook
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*/
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public $mCallCnt = 0;
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/**
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* The backlinks, in order, to pass as $3 to
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* 'cite_references_link_many_format', defined in
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* 'cite_references_link_many_format_backlink_labels
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*
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* @var array
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*/
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public $mBacklinkLabels;
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/**
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* The links to use per group, in order.
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*
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* @var array
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*/
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public $mLinkLabels = array();
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/**
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* @var Parser
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*/
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public $mParser;
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/**
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* True when the ParserAfterParse hook has been called.
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* Used to avoid doing anything in ParserBeforeTidy.
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*
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* @var boolean
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*/
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public $mHaveAfterParse = false;
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/**
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* True when a <ref> tag is being processed.
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* Used to avoid infinite recursion
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*
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* @var boolean
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*/
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public $mInCite = false;
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/**
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* True when a <references> tag is being processed.
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* Used to detect the use of <references> to define refs
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*
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* @var boolean
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*/
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public $mInReferences = false;
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/**
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* Error stack used when defining refs in <references>
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*
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* @var array
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*/
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public $mReferencesErrors = array();
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/**
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* Group used when in <references> block
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*
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* @var string
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*/
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public $mReferencesGroup = '';
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/**
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* <ref> call stack
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* Used to cleanup out of sequence ref calls created by #tag
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* See description of function rollbackRef.
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*
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* @var array
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*/
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public $mRefCallStack = array();
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/**
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* @var bool
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*/
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private $mBumpRefData = false;
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/**
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* Did we install us into $wgHooks yet?
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* @var Boolean
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*/
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static protected $hooksInstalled = false;
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/**#@+ @access private */
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/**
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* Callback function for <ref>
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*
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* @param string|null $str Raw content of the <ref> tag.
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* @param string[] $argv Arguments
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* @param Parser $parser
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* @param PPFrame $frame
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*
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* @return string
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*/
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function ref( $str, array $argv, Parser $parser, PPFrame $frame ) {
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if ( $this->mInCite ) {
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return htmlspecialchars( "<ref>$str</ref>" );
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}
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$this->mCallCnt++;
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$this->mInCite = true;
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$ret = $this->guardedRef( $str, $argv, $parser );
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$this->mInCite = false;
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$parserOutput = $parser->getOutput();
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$parserOutput->addModules( 'ext.cite.a11y' );
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$parserOutput->addModuleStyles( 'ext.cite.styles' );
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if ( is_callable( array( $frame, 'setVolatile' ) ) ) {
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$frame->setVolatile();
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}
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// new <ref> tag, we may need to bump the ref data counter
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// to avoid overwriting a previous group
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$this->mBumpRefData = true;
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return $ret;
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}
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/**
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* @param string|null $str Raw content of the <ref> tag.
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* @param string[] $argv Arguments
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* @param Parser $parser
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* @param string $default_group
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*
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* @throws Exception
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* @return string
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*/
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function guardedRef( $str, array $argv, Parser $parser, $default_group = self::DEFAULT_GROUP ) {
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$this->mParser = $parser;
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# The key here is the "name" attribute.
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list( $key, $group, $follow ) = $this->refArg( $argv );
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# Split these into groups.
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if ( $group === null ) {
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if ( $this->mInReferences ) {
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$group = $this->mReferencesGroup;
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} else {
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$group = $default_group;
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}
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}
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/*
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* This section deals with constructions of the form
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*
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* <references>
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* <ref name="foo"> BAR </ref>
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* </references>
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*/
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if ( $this->mInReferences ) {
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if ( $group != $this->mReferencesGroup ) {
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# <ref> and <references> have conflicting group attributes.
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$this->mReferencesErrors[] =
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$this->error( 'cite_error_references_group_mismatch', htmlspecialchars( $group ) );
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} elseif ( $str !== '' ) {
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if ( !isset( $this->mRefs[$group] ) ) {
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# Called with group attribute not defined in text.
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$this->mReferencesErrors[] =
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$this->error( 'cite_error_references_missing_group', htmlspecialchars( $group ) );
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} elseif ( $key === null || $key === '' ) {
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# <ref> calls inside <references> must be named
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$this->mReferencesErrors[] =
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$this->error( 'cite_error_references_no_key' );
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} elseif ( !isset( $this->mRefs[$group][$key] ) ) {
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# Called with name attribute not defined in text.
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$this->mReferencesErrors[] =
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$this->error( 'cite_error_references_missing_key', $key );
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} else {
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if (
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isset( $this->mRefs[$group][$key]['text'] ) &&
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$str !== $this->mRefs[$group][$key]['text']
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) {
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// two refs with same key and different content
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// add error message to the original ref
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$this->mRefs[$group][$key]['text'] .= ' ' . $this->error(
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'cite_error_references_duplicate_key', $key, 'noparse'
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);
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} else {
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# Assign the text to corresponding ref
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$this->mRefs[$group][$key]['text'] = $str;
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}
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}
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} else {
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# <ref> called in <references> has no content.
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$this->mReferencesErrors[] =
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$this->error( 'cite_error_empty_references_define', $key );
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}
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return '';
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}
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if ( $str === '' ) {
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# <ref ...></ref>. This construct is invalid if
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# it's a contentful ref, but OK if it's a named duplicate and should
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# be equivalent <ref ... />, for compatability with #tag.
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if ( is_string( $key ) && $key !== '' ) {
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$str = null;
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} else {
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$this->mRefCallStack[] = false;
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return $this->error( 'cite_error_ref_no_input' );
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}
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}
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if ( $key === false ) {
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# TODO: Comment this case; what does this condition mean?
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$this->mRefCallStack[] = false;
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return $this->error( 'cite_error_ref_too_many_keys' );
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}
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if ( $str === null && $key === null ) {
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# Something like <ref />; this makes no sense.
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$this->mRefCallStack[] = false;
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return $this->error( 'cite_error_ref_no_key' );
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}
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if ( preg_match( '/^[0-9]+$/', $key ) || preg_match( '/^[0-9]+$/', $follow ) ) {
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# Numeric names mess up the resulting id's, potentially produ-
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# cing duplicate id's in the XHTML. The Right Thing To Do
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# would be to mangle them, but it's not really high-priority
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# (and would produce weird id's anyway).
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$this->mRefCallStack[] = false;
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return $this->error( 'cite_error_ref_numeric_key' );
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}
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if ( preg_match(
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'/<ref\b[^<]*?>/',
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preg_replace( '#<([^ ]+?).*?>.*?</\\1 *>|<!--.*?-->#', '', $str )
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) ) {
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# (bug T8199) This most likely implies that someone left off the
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# closing </ref> tag, which will cause the entire article to be
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# eaten up until the next <ref>. So we bail out early instead.
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# The fancy regex above first tries chopping out anything that
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# looks like a comment or SGML tag, which is a crude way to avoid
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# false alarms for <nowiki>, <pre>, etc.
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# Possible improvement: print the warning, followed by the contents
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# of the <ref> tag. This way no part of the article will be eaten
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# even temporarily.
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$this->mRefCallStack[] = false;
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return $this->error( 'cite_error_included_ref' );
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}
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if ( is_string( $key ) || is_string( $str ) ) {
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# We don't care about the content: if the key exists, the ref
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# is presumptively valid. Either it stores a new ref, or re-
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# fers to an existing one. If it refers to a nonexistent ref,
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# we'll figure that out later. Likewise it's definitely valid
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# if there's any content, regardless of key.
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return $this->stack( $str, $key, $group, $follow, $argv );
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}
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# Not clear how we could get here, but something is probably
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# wrong with the types. Let's fail fast.
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throw new Exception( 'Invalid $str and/or $key: ' . serialize( array( $str, $key ) ) );
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}
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/**
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* Parse the arguments to the <ref> tag
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*
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* "name" : Key of the reference.
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* "group" : Group to which it belongs. Needs to be passed to <references /> too.
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* "follow" : If the current reference is the continuation of another, key of that reference.
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*
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*
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* @param string[] $argv The argument vector
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* @return mixed false on invalid input, a string on valid
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* input and null on no input
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*/
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function refArg( array $argv ) {
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global $wgAllowCiteGroups;
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$cnt = count( $argv );
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$group = null;
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$key = null;
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$follow = null;
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if ( $cnt > 2 ) {
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// There should only be one key or follow parameter, and one group parameter
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// FIXME : this looks inconsistent, it should probably return a tuple
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return false;
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} elseif ( $cnt >= 1 ) {
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if ( isset( $argv['name'] ) && isset( $argv['follow'] ) ) {
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return array( false, false, false );
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}
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if ( isset( $argv['name'] ) ) {
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// Key given.
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$key = Sanitizer::escapeId( $argv['name'], 'noninitial' );
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unset( $argv['name'] );
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--$cnt;
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}
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if ( isset( $argv['follow'] ) ) {
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// Follow given.
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$follow = Sanitizer::escapeId( $argv['follow'], 'noninitial' );
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unset( $argv['follow'] );
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--$cnt;
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}
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if ( isset( $argv['group'] ) ) {
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if ( !$wgAllowCiteGroups ) {
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// remove when groups are fully tested.
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return array( false );
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}
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// Group given.
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$group = $argv['group'];
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unset( $argv['group'] );
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--$cnt;
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}
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if ( $cnt === 0 ) {
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return array( $key, $group, $follow );
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} else {
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// Invalid key
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return array( false, false, false );
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}
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} else {
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// No key
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return array( null, $group, false );
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}
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}
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/**
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* Populate $this->mRefs based on input and arguments to <ref>
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*
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* @param string $str Input from the <ref> tag
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* @param string|null $key Argument to the <ref> tag as returned by $this->refArg()
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* @param string $group
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* @param string|null $follow
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* @param string[] $call
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*
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* @throws Exception
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* @return string
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*/
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function stack( $str, $key = null, $group, $follow, array $call ) {
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if ( !isset( $this->mRefs[$group] ) ) {
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$this->mRefs[$group] = array();
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}
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if ( !isset( $this->mGroupCnt[$group] ) ) {
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$this->mGroupCnt[$group] = 0;
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}
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if ( $follow != null ) {
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if ( isset( $this->mRefs[$group][$follow] ) && is_array( $this->mRefs[$group][$follow] ) ) {
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// add text to the note that is being followed
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$this->mRefs[$group][$follow]['text'] .= ' ' . $str;
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} else {
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// insert part of note at the beginning of the group
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$groupsCount = count( $this->mRefs[$group] );
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for ( $k = 0; $k < $groupsCount; $k++ ) {
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if ( !isset( $this->mRefs[$group][$k]['follow'] ) ) {
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break;
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}
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}
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array_splice( $this->mRefs[$group], $k, 0, array( array(
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'count' => -1,
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'text' => $str,
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'key' => ++$this->mOutCnt,
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'follow' => $follow
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) ) );
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array_splice( $this->mRefCallStack, $k, 0,
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array( array( 'new', $call, $str, $key, $group, $this->mOutCnt ) ) );
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}
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// return an empty string : this is not a reference
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return '';
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}
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if ( $key === null ) {
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// No key
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// $this->mRefs[$group][] = $str;
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$this->mRefs[$group][] = array(
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'count' => -1,
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'text' => $str,
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'key' => ++$this->mOutCnt
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);
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$this->mRefCallStack[] = array( 'new', $call, $str, $key, $group, $this->mOutCnt );
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return $this->linkRef( $group, $this->mOutCnt );
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}
|
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if ( !is_string( $key ) ) {
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throw new Exception( 'Invalid stack key: ' . serialize( $key ) );
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}
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// Valid key
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if ( !isset( $this->mRefs[$group][$key] ) || !is_array( $this->mRefs[$group][$key] ) ) {
|
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// First occurrence
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$this->mRefs[$group][$key] = array(
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'text' => $str,
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'count' => 0,
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'key' => ++$this->mOutCnt,
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'number' => ++$this->mGroupCnt[$group]
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);
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$this->mRefCallStack[] = array( 'new', $call, $str, $key, $group, $this->mOutCnt );
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return $this->linkRef(
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$group,
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$key,
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$this->mRefs[$group][$key]['key'] . "-" . $this->mRefs[$group][$key]['count'],
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$this->mRefs[$group][$key]['number'],
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"-" . $this->mRefs[$group][$key]['key']
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);
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}
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// We've been here before
|
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if ( $this->mRefs[$group][$key]['text'] === null && $str !== '' ) {
|
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// If no text found before, use this text
|
|
$this->mRefs[$group][$key]['text'] = $str;
|
|
$this->mRefCallStack[] = array( 'assign', $call, $str, $key, $group,
|
|
$this->mRefs[$group][$key]['key'] );
|
|
} else {
|
|
if ( $str != null && $str !== '' && $str !== $this->mRefs[$group][$key]['text'] ) {
|
|
// two refs with same key and different content
|
|
// add error message to the original ref
|
|
$this->mRefs[$group][$key]['text'] .= ' ' . $this->error(
|
|
'cite_error_references_duplicate_key', $key, 'noparse'
|
|
);
|
|
}
|
|
$this->mRefCallStack[] = array( 'increment', $call, $str, $key, $group,
|
|
$this->mRefs[$group][$key]['key'] );
|
|
}
|
|
return $this->linkRef(
|
|
$group,
|
|
$key,
|
|
$this->mRefs[$group][$key]['key'] . "-" . ++$this->mRefs[$group][$key]['count'],
|
|
$this->mRefs[$group][$key]['number'],
|
|
"-" . $this->mRefs[$group][$key]['key']
|
|
);
|
|
}
|
|
|
|
/**
|
|
* Partially undoes the effect of calls to stack()
|
|
*
|
|
* Called by guardedReferences()
|
|
*
|
|
* The option to define <ref> within <references> makes the
|
|
* behavior of <ref> context dependent. This is normally fine
|
|
* but certain operations (especially #tag) lead to out-of-order
|
|
* parser evaluation with the <ref> tags being processed before
|
|
* their containing <reference> element is read. This leads to
|
|
* stack corruption that this function works to fix.
|
|
*
|
|
* This function is not a total rollback since some internal
|
|
* counters remain incremented. Doing so prevents accidentally
|
|
* corrupting certain links.
|
|
*
|
|
* @param string $type
|
|
* @param string|null $key
|
|
* @param string $group
|
|
* @param int $index
|
|
*/
|
|
function rollbackRef( $type, $key, $group, $index ) {
|
|
if ( !isset( $this->mRefs[$group] ) ) {
|
|
return;
|
|
}
|
|
|
|
if ( $key === null ) {
|
|
foreach ( $this->mRefs[$group] as $k => $v ) {
|
|
if ( $this->mRefs[$group][$k]['key'] === $index ) {
|
|
$key = $k;
|
|
break;
|
|
}
|
|
}
|
|
}
|
|
|
|
// Sanity checks that specified element exists.
|
|
if ( $key === null ) {
|
|
return;
|
|
}
|
|
if ( !isset( $this->mRefs[$group][$key] ) ) {
|
|
return;
|
|
}
|
|
if ( $this->mRefs[$group][$key]['key'] != $index ) {
|
|
return;
|
|
}
|
|
|
|
switch ( $type ) {
|
|
case 'new':
|
|
# Rollback the addition of new elements to the stack.
|
|
unset( $this->mRefs[$group][$key] );
|
|
if ( $this->mRefs[$group] === array() ) {
|
|
unset( $this->mRefs[$group] );
|
|
unset( $this->mGroupCnt[$group] );
|
|
}
|
|
break;
|
|
case 'assign':
|
|
# Rollback assignment of text to pre-existing elements.
|
|
$this->mRefs[$group][$key]['text'] = null;
|
|
# continue without break
|
|
case 'increment':
|
|
# Rollback increase in named ref occurrences.
|
|
$this->mRefs[$group][$key]['count']--;
|
|
break;
|
|
}
|
|
}
|
|
|
|
/**
|
|
* Callback function for <references>
|
|
*
|
|
* @param string|null $str Raw content of the <references> tag.
|
|
* @param string[] $argv Arguments
|
|
* @param Parser $parser
|
|
* @param PPFrame $frame
|
|
*
|
|
* @return string
|
|
*/
|
|
function references( $str, array $argv, Parser $parser, PPFrame $frame ) {
|
|
if ( $this->mInCite || $this->mInReferences ) {
|
|
if ( is_null( $str ) ) {
|
|
return htmlspecialchars( "<references/>" );
|
|
}
|
|
return htmlspecialchars( "<references>$str</references>" );
|
|
}
|
|
$this->mCallCnt++;
|
|
$this->mInReferences = true;
|
|
$ret = $this->guardedReferences( $str, $argv, $parser );
|
|
$this->mInReferences = false;
|
|
if ( is_callable( array( $frame, 'setVolatile' ) ) ) {
|
|
$frame->setVolatile();
|
|
}
|
|
return $ret;
|
|
}
|
|
|
|
/**
|
|
* @param string|null $str Raw content of the <references> tag.
|
|
* @param string[] $argv
|
|
* @param Parser $parser
|
|
* @param string $group
|
|
*
|
|
* @return string
|
|
*/
|
|
function guardedReferences( $str, array $argv, Parser $parser, $group = self::DEFAULT_GROUP ) {
|
|
global $wgAllowCiteGroups;
|
|
|
|
$this->mParser = $parser;
|
|
|
|
if ( isset( $argv['group'] ) && $wgAllowCiteGroups ) {
|
|
$group = $argv['group'];
|
|
unset( $argv['group'] );
|
|
}
|
|
|
|
if ( strval( $str ) !== '' ) {
|
|
$this->mReferencesGroup = $group;
|
|
|
|
# Detect whether we were sent already rendered <ref>s.
|
|
# Mostly a side effect of using #tag to call references.
|
|
# The following assumes that the parsed <ref>s sent within
|
|
# the <references> block were the most recent calls to
|
|
# <ref>. This assumption is true for all known use cases,
|
|
# but not strictly enforced by the parser. It is possible
|
|
# that some unusual combination of #tag, <references> and
|
|
# conditional parser functions could be created that would
|
|
# lead to malformed references here.
|
|
$count = substr_count( $str, Parser::MARKER_PREFIX . "-ref-" );
|
|
$redoStack = array();
|
|
|
|
# Undo effects of calling <ref> while unaware of containing <references>
|
|
for ( $i = 1; $i <= $count; $i++ ) {
|
|
if ( !$this->mRefCallStack ) {
|
|
break;
|
|
}
|
|
|
|
$call = array_pop( $this->mRefCallStack );
|
|
$redoStack[] = $call;
|
|
if ( $call !== false ) {
|
|
list( $type, $ref_argv, $ref_str,
|
|
$ref_key, $ref_group, $ref_index ) = $call;
|
|
$this->rollbackRef( $type, $ref_key, $ref_group, $ref_index );
|
|
}
|
|
}
|
|
|
|
# Rerun <ref> call now that mInReferences is set.
|
|
for ( $i = count( $redoStack ) - 1; $i >= 0; $i-- ) {
|
|
$call = $redoStack[$i];
|
|
if ( $call !== false ) {
|
|
list( $type, $ref_argv, $ref_str,
|
|
$ref_key, $ref_group, $ref_index ) = $call;
|
|
$this->guardedRef( $ref_str, $ref_argv, $parser );
|
|
}
|
|
}
|
|
|
|
# Parse $str to process any unparsed <ref> tags.
|
|
$parser->recursiveTagParse( $str );
|
|
|
|
# Reset call stack
|
|
$this->mRefCallStack = array();
|
|
}
|
|
|
|
if ( $argv && $wgAllowCiteGroups ) {
|
|
return $this->error( 'cite_error_references_invalid_parameters_group' );
|
|
}
|
|
if ( $argv ) {
|
|
return $this->error( 'cite_error_references_invalid_parameters' );
|
|
}
|
|
|
|
$s = $this->referencesFormat( $group );
|
|
if ( $parser->getOptions()->getIsSectionPreview() ) {
|
|
return $s;
|
|
}
|
|
|
|
# Append errors generated while processing <references>
|
|
if ( $this->mReferencesErrors ) {
|
|
$s .= "\n" . implode( "<br />\n", $this->mReferencesErrors );
|
|
$this->mReferencesErrors = array();
|
|
}
|
|
return $s;
|
|
}
|
|
|
|
/**
|
|
* Make output to be returned from the references() function
|
|
*
|
|
* @param string $group
|
|
*
|
|
* @return string XHTML ready for output
|
|
*/
|
|
function referencesFormat( $group ) {
|
|
if ( !$this->mRefs || !isset( $this->mRefs[$group] ) ) {
|
|
return '';
|
|
}
|
|
|
|
wfProfileIn( __METHOD__ . '-entries' );
|
|
$ent = array();
|
|
foreach ( $this->mRefs[$group] as $k => $v ) {
|
|
$ent[] = $this->referencesFormatEntry( $k, $v );
|
|
}
|
|
|
|
$prefix = wfMessage( 'cite_references_prefix' )->inContentLanguage()->plain();
|
|
$suffix = wfMessage( 'cite_references_suffix' )->inContentLanguage()->plain();
|
|
$content = implode( "\n", $ent );
|
|
|
|
// Prepare the parser input.
|
|
// We add new lines between the pieces to avoid a confused tidy (bug 13073).
|
|
$parserInput = $prefix . "\n" . $content . "\n" . $suffix;
|
|
|
|
wfProfileOut( __METHOD__ . '-entries' );
|
|
|
|
// Let's try to cache it.
|
|
global $wgCiteCacheReferences, $wgMemc;
|
|
$data = false;
|
|
if ( $wgCiteCacheReferences ) {
|
|
$cacheKey = wfMemcKey(
|
|
'citeref',
|
|
md5( $parserInput ),
|
|
$this->mParser->Title()->getArticleID()
|
|
);
|
|
wfProfileIn( __METHOD__ . '-cache-get' );
|
|
$data = $wgMemc->get( $cacheKey );
|
|
wfProfileOut( __METHOD__ . '-cache-get' );
|
|
}
|
|
|
|
if ( !$data || !$this->mParser->isValidHalfParsedText( $data ) ) {
|
|
wfProfileIn( __METHOD__ . '-parse' );
|
|
|
|
// Live hack: parse() adds two newlines on WM, can't reproduce it locally -ævar
|
|
$ret = rtrim( $this->mParser->recursiveTagParse( $parserInput ), "\n" );
|
|
|
|
if ( $wgCiteCacheReferences ) {
|
|
$serData = $this->mParser->serializeHalfParsedText( $ret );
|
|
$wgMemc->set( $cacheKey, $serData, 86400 );
|
|
}
|
|
|
|
wfProfileOut( __METHOD__ . '-parse' );
|
|
} else {
|
|
$ret = $this->mParser->unserializeHalfParsedText( $data );
|
|
}
|
|
|
|
if ( !$this->mParser->getOptions()->getIsPreview() ) {
|
|
// save references data for later use by LinksUpdate hooks
|
|
$this->saveReferencesData( $group );
|
|
}
|
|
|
|
// done, clean up so we can reuse the group
|
|
unset( $this->mRefs[$group] );
|
|
unset( $this->mGroupCnt[$group] );
|
|
|
|
return $ret;
|
|
}
|
|
|
|
/**
|
|
* Format a single entry for the referencesFormat() function
|
|
*
|
|
* @param string $key The key of the reference
|
|
* @param mixed $val The value of the reference, string for anonymous
|
|
* references, array for user-suppplied
|
|
* @return string Wikitext
|
|
*/
|
|
function referencesFormatEntry( $key, $val ) {
|
|
// Anonymous reference
|
|
if ( !is_array( $val ) ) {
|
|
return wfMessage(
|
|
'cite_references_link_one',
|
|
self::getReferencesKey( $key ),
|
|
$this->refKey( $key ),
|
|
$this->referenceText( $key, $val )
|
|
)->inContentLanguage()->plain();
|
|
}
|
|
$text = $this->referenceText( $key, $val['text'] );
|
|
if ( isset( $val['follow'] ) ) {
|
|
return wfMessage(
|
|
'cite_references_no_link',
|
|
self::getReferencesKey( $val['follow'] ),
|
|
$text
|
|
)->inContentLanguage()->plain();
|
|
}
|
|
|
|
if ( $val['count'] < 0 ) {
|
|
return wfMessage(
|
|
'cite_references_link_one',
|
|
self::getReferencesKey( $val['key'] ),
|
|
# $this->refKey( $val['key'], $val['count'] ),
|
|
$this->refKey( $val['key'] ),
|
|
$text
|
|
)->inContentLanguage()->plain();
|
|
// Standalone named reference, I want to format this like an
|
|
// anonymous reference because displaying "1. 1.1 Ref text" is
|
|
// overkill and users frequently use named references when they
|
|
// don't need them for convenience
|
|
} elseif ( $val['count'] === 0 ) {
|
|
return wfMessage(
|
|
'cite_references_link_one',
|
|
self::getReferencesKey( $key . "-" . $val['key'] ),
|
|
# $this->refKey( $key, $val['count'] ),
|
|
$this->refKey( $key, $val['key'] . "-" . $val['count'] ),
|
|
$text
|
|
)->inContentLanguage()->plain();
|
|
// Named references with >1 occurrences
|
|
} else {
|
|
$links = array();
|
|
// for group handling, we have an extra key here.
|
|
for ( $i = 0; $i <= $val['count']; ++$i ) {
|
|
$links[] = wfMessage(
|
|
'cite_references_link_many_format',
|
|
$this->refKey( $key, $val['key'] . "-$i" ),
|
|
$this->referencesFormatEntryNumericBacklinkLabel( $val['number'], $i, $val['count'] ),
|
|
$this->referencesFormatEntryAlternateBacklinkLabel( $i )
|
|
)->inContentLanguage()->plain();
|
|
}
|
|
|
|
$list = $this->listToText( $links );
|
|
|
|
return wfMessage( 'cite_references_link_many',
|
|
self::getReferencesKey( $key . "-" . $val['key'] ),
|
|
$list,
|
|
$text
|
|
)->inContentLanguage()->plain();
|
|
}
|
|
}
|
|
|
|
/**
|
|
* Returns formatted reference text
|
|
* @param String $key
|
|
* @param String $text
|
|
* @return String
|
|
*/
|
|
function referenceText( $key, $text ) {
|
|
if ( !isset( $text ) || $text === '' ) {
|
|
return $this->error( 'cite_error_references_no_text', $key, 'noparse' );
|
|
}
|
|
return '<span class="reference-text">' . rtrim( $text, "\n" ) . "</span>\n";
|
|
}
|
|
|
|
/**
|
|
* Generate a numeric backlink given a base number and an
|
|
* offset, e.g. $base = 1, $offset = 2; = 1.2
|
|
* Since bug #5525, it correctly does 1.9 -> 1.10 as well as 1.099 -> 1.100
|
|
*
|
|
* @static
|
|
*
|
|
* @param int $base The base
|
|
* @param int $offset The offset
|
|
* @param int $max Maximum value expected.
|
|
* @return string
|
|
*/
|
|
function referencesFormatEntryNumericBacklinkLabel( $base, $offset, $max ) {
|
|
global $wgContLang;
|
|
$scope = strlen( $max );
|
|
$ret = $wgContLang->formatNum(
|
|
sprintf( "%s.%0{$scope}s", $base, $offset )
|
|
);
|
|
return $ret;
|
|
}
|
|
|
|
/**
|
|
* Generate a custom format backlink given an offset, e.g.
|
|
* $offset = 2; = c if $this->mBacklinkLabels = array( 'a',
|
|
* 'b', 'c', ...). Return an error if the offset > the # of
|
|
* array items
|
|
*
|
|
* @param int $offset The offset
|
|
*
|
|
* @return string
|
|
*/
|
|
function referencesFormatEntryAlternateBacklinkLabel( $offset ) {
|
|
if ( !isset( $this->mBacklinkLabels ) ) {
|
|
$this->genBacklinkLabels();
|
|
}
|
|
if ( isset( $this->mBacklinkLabels[$offset] ) ) {
|
|
return $this->mBacklinkLabels[$offset];
|
|
} else {
|
|
// Feed me!
|
|
return $this->error( 'cite_error_references_no_backlink_label', null, 'noparse' );
|
|
}
|
|
}
|
|
|
|
/**
|
|
* Generate a custom format link for a group given an offset, e.g.
|
|
* the second <ref group="foo"> is b if $this->mLinkLabels["foo"] =
|
|
* array( 'a', 'b', 'c', ...).
|
|
* Return an error if the offset > the # of array items
|
|
*
|
|
* @param int $offset The offset
|
|
* @param string $group The group name
|
|
* @param string $label The text to use if there's no message for them.
|
|
*
|
|
* @return string
|
|
*/
|
|
function getLinkLabel( $offset, $group, $label ) {
|
|
$message = "cite_link_label_group-$group";
|
|
if ( !isset( $this->mLinkLabels[$group] ) ) {
|
|
$this->genLinkLabels( $group, $message );
|
|
}
|
|
if ( $this->mLinkLabels[$group] === false ) {
|
|
// Use normal representation, ie. "$group 1", "$group 2"...
|
|
return $label;
|
|
}
|
|
|
|
if ( isset( $this->mLinkLabels[$group][$offset - 1] ) ) {
|
|
return $this->mLinkLabels[$group][$offset - 1];
|
|
} else {
|
|
// Feed me!
|
|
return $this->error( 'cite_error_no_link_label_group', array( $group, $message ), 'noparse' );
|
|
}
|
|
}
|
|
|
|
/**
|
|
* Return an id for use in wikitext output based on a key and
|
|
* optionally the number of it, used in <references>, not <ref>
|
|
* (since otherwise it would link to itself)
|
|
*
|
|
* @static
|
|
*
|
|
* @param string $key The key
|
|
* @param int $num The number of the key
|
|
* @return string A key for use in wikitext
|
|
*/
|
|
function refKey( $key, $num = null ) {
|
|
$prefix = wfMessage( 'cite_reference_link_prefix' )->inContentLanguage()->text();
|
|
$suffix = wfMessage( 'cite_reference_link_suffix' )->inContentLanguage()->text();
|
|
if ( isset( $num ) ) {
|
|
$key = wfMessage( 'cite_reference_link_key_with_num', $key, $num )
|
|
->inContentLanguage()->plain();
|
|
}
|
|
|
|
return "$prefix$key$suffix";
|
|
}
|
|
|
|
/**
|
|
* Return an id for use in wikitext output based on a key and
|
|
* optionally the number of it, used in <ref>, not <references>
|
|
* (since otherwise it would link to itself)
|
|
*
|
|
* @static
|
|
*
|
|
* @param string $key The key
|
|
* @param int $num The number of the key
|
|
* @return string A key for use in wikitext
|
|
*/
|
|
public static function getReferencesKey( $key, $num = null ) {
|
|
$prefix = wfMessage( 'cite_references_link_prefix' )->inContentLanguage()->text();
|
|
$suffix = wfMessage( 'cite_references_link_suffix' )->inContentLanguage()->text();
|
|
if ( isset( $num ) ) {
|
|
$key = wfMessage( 'cite_reference_link_key_with_num', $key, $num )
|
|
->inContentLanguage()->plain();
|
|
}
|
|
|
|
return "$prefix$key$suffix";
|
|
}
|
|
|
|
/**
|
|
* Generate a link (<sup ...) for the <ref> element from a key
|
|
* and return XHTML ready for output
|
|
*
|
|
* @param string $group
|
|
* @param string $key The key for the link
|
|
* @param int $count The index of the key, used for distinguishing
|
|
* multiple occurrences of the same key
|
|
* @param int $label The label to use for the link, I want to
|
|
* use the same label for all occourances of
|
|
* the same named reference.
|
|
* @param string $subkey
|
|
*
|
|
* @return string
|
|
*/
|
|
function linkRef( $group, $key, $count = null, $label = null, $subkey = '' ) {
|
|
global $wgContLang;
|
|
$label = is_null( $label ) ? ++$this->mGroupCnt[$group] : $label;
|
|
|
|
return
|
|
$this->mParser->recursiveTagParse(
|
|
wfMessage(
|
|
'cite_reference_link',
|
|
$this->refKey( $key, $count ),
|
|
self::getReferencesKey( $key . $subkey ),
|
|
$this->getLinkLabel( $label, $group,
|
|
( ( $group === self::DEFAULT_GROUP ) ? '' : "$group " ) . $wgContLang->formatNum( $label ) )
|
|
)->inContentLanguage()->plain()
|
|
);
|
|
}
|
|
|
|
/**
|
|
* This does approximately the same thing as
|
|
* Language::listToText() but due to this being used for a
|
|
* slightly different purpose (people might not want , as the
|
|
* first separator and not 'and' as the second, and this has to
|
|
* use messages from the content language) I'm rolling my own.
|
|
*
|
|
* @static
|
|
*
|
|
* @param array $arr The array to format
|
|
* @return string
|
|
*/
|
|
function listToText( $arr ) {
|
|
$cnt = count( $arr );
|
|
|
|
$sep = wfMessage( 'cite_references_link_many_sep' )->inContentLanguage()->plain();
|
|
$and = wfMessage( 'cite_references_link_many_and' )->inContentLanguage()->plain();
|
|
|
|
if ( $cnt === 1 ) {
|
|
// Enforce always returning a string
|
|
return (string)$arr[0];
|
|
} else {
|
|
$t = array_slice( $arr, 0, $cnt - 1 );
|
|
return implode( $sep, $t ) . $and . $arr[$cnt - 1];
|
|
}
|
|
}
|
|
|
|
/**
|
|
* Generate the labels to pass to the
|
|
* 'cite_references_link_many_format' message, the format is an
|
|
* arbitrary number of tokens separated by [\t\n ]
|
|
*/
|
|
function genBacklinkLabels() {
|
|
$text = wfMessage( 'cite_references_link_many_format_backlink_labels' )
|
|
->inContentLanguage()->plain();
|
|
$this->mBacklinkLabels = preg_split( '#[\n\t ]#', $text );
|
|
}
|
|
|
|
/**
|
|
* Generate the labels to pass to the
|
|
* 'cite_reference_link' message instead of numbers, the format is an
|
|
* arbitrary number of tokens separated by [\t\n ]
|
|
*
|
|
* @param string $group
|
|
* @param string $message
|
|
*/
|
|
function genLinkLabels( $group, $message ) {
|
|
$text = false;
|
|
$msg = wfMessage( $message )->inContentLanguage();
|
|
if ( $msg->exists() ) {
|
|
$text = $msg->plain();
|
|
}
|
|
$this->mLinkLabels[$group] = ( !$text ) ? false : preg_split( '#[\n\t ]#', $text );
|
|
}
|
|
|
|
/**
|
|
* Gets run when Parser::clearState() gets run, since we don't
|
|
* want the counts to transcend pages and other instances
|
|
*
|
|
* @param Parser $parser
|
|
*
|
|
* @return bool
|
|
*/
|
|
function clearState( Parser &$parser ) {
|
|
if ( $parser->extCite !== $this ) {
|
|
return $parser->extCite->clearState( $parser );
|
|
}
|
|
|
|
# Don't clear state when we're in the middle of parsing
|
|
# a <ref> tag
|
|
if ( $this->mInCite || $this->mInReferences ) {
|
|
return true;
|
|
}
|
|
|
|
$this->mGroupCnt = array();
|
|
$this->mOutCnt = 0;
|
|
$this->mCallCnt = 0;
|
|
$this->mRefs = array();
|
|
$this->mReferencesErrors = array();
|
|
$this->mRefCallStack = array();
|
|
|
|
return true;
|
|
}
|
|
|
|
/**
|
|
* Gets run when the parser is cloned.
|
|
*
|
|
* @param Parser $parser
|
|
*
|
|
* @return bool
|
|
*/
|
|
function cloneState( Parser $parser ) {
|
|
if ( $parser->extCite !== $this ) {
|
|
return $parser->extCite->cloneState( $parser );
|
|
}
|
|
|
|
$parser->extCite = clone $this;
|
|
$parser->setHook( 'ref', array( $parser->extCite, 'ref' ) );
|
|
$parser->setHook( 'references', array( $parser->extCite, 'references' ) );
|
|
|
|
// Clear the state, making sure it will actually work.
|
|
$parser->extCite->mInCite = false;
|
|
$parser->extCite->mInReferences = false;
|
|
$parser->extCite->clearState( $parser );
|
|
|
|
return true;
|
|
}
|
|
|
|
/**
|
|
* Called at the end of page processing to append a default references
|
|
* section, if refs were used without a main references tag. If there are references
|
|
* in a custom group, and there is no references tag for it, show an error
|
|
* message for that group.
|
|
* If we are processing a section preview, this adds the missing
|
|
* references tags and does not add the errors.
|
|
*
|
|
* @param bool $afterParse True if called from the ParserAfterParse hook
|
|
* @param Parser $parser
|
|
* @param string $text
|
|
*
|
|
* @return bool
|
|
*/
|
|
function checkRefsNoReferences( $afterParse, &$parser, &$text ) {
|
|
if ( is_null( $parser->extCite ) ) {
|
|
return true;
|
|
}
|
|
if ( $parser->extCite !== $this ) {
|
|
return $parser->extCite->checkRefsNoReferences( $afterParse, $parser, $text );
|
|
}
|
|
|
|
if ( $afterParse ) {
|
|
$this->mHaveAfterParse = true;
|
|
} elseif ( $this->mHaveAfterParse ) {
|
|
return true;
|
|
}
|
|
|
|
if ( !$parser->getOptions()->getIsPreview() ) {
|
|
// save references data for later use by LinksUpdate hooks
|
|
if ( $this->mRefs && isset( $this->mRefs[self::DEFAULT_GROUP] ) ) {
|
|
$this->saveReferencesData();
|
|
}
|
|
$isSectionPreview = false;
|
|
} else {
|
|
$isSectionPreview = $parser->getOptions()->getIsSectionPreview();
|
|
}
|
|
|
|
$s = '';
|
|
foreach ( $this->mRefs as $group => $refs ) {
|
|
if ( !$refs ) {
|
|
continue;
|
|
}
|
|
if ( $group === self::DEFAULT_GROUP || $isSectionPreview ) {
|
|
$s .= $this->referencesFormat( $group );
|
|
} else {
|
|
$s .= "\n<br />" .
|
|
$this->error( 'cite_error_group_refs_without_references', htmlspecialchars( $group ) );
|
|
}
|
|
}
|
|
if ( $isSectionPreview && $s !== '' ) {
|
|
// provide a preview of references in its own section
|
|
$text .= "\n" . '<div class="mw-ext-cite-cite_section_preview_references" >';
|
|
$headerMsg = wfMessage( 'cite_section_preview_references' );
|
|
if ( !$headerMsg->isDisabled() ) {
|
|
$text .= '<h2 id="mw-ext-cite-cite_section_preview_references_header" >'
|
|
. $headerMsg->escaped()
|
|
. '</h2>';
|
|
}
|
|
$text .= $s . '</div>';
|
|
} else {
|
|
$text .= $s;
|
|
}
|
|
return true;
|
|
}
|
|
|
|
/**
|
|
* Saves references in parser extension data
|
|
* This is called by each <references/> tag, and by checkRefsNoReferences
|
|
* Assumes $this->mRefs[$group] is set
|
|
*
|
|
* @param $group
|
|
*/
|
|
private function saveReferencesData( $group = self::DEFAULT_GROUP ) {
|
|
global $wgCiteStoreReferencesData;
|
|
if ( !$wgCiteStoreReferencesData ) {
|
|
return;
|
|
}
|
|
$savedRefs = $this->mParser->getOutput()->getExtensionData( self::EXT_DATA_KEY );
|
|
if ( $savedRefs === null ) {
|
|
// Initialize array structure
|
|
$savedRefs = array(
|
|
'refs' => array(),
|
|
'version' => self::DATA_VERSION_NUMBER,
|
|
);
|
|
}
|
|
if ( $this->mBumpRefData ) {
|
|
// This handles pages with multiple <references/> tags with <ref> tags in between.
|
|
// On those, a group can appear several times, so we need to avoid overwriting
|
|
// a previous appearance.
|
|
$savedRefs['refs'][] = array();
|
|
$this->mBumpRefData = false;
|
|
}
|
|
$n = count( $savedRefs['refs'] ) - 1;
|
|
// save group
|
|
$savedRefs['refs'][$n][$group] = $this->mRefs[$group];
|
|
|
|
$this->mParser->getOutput()->setExtensionData( self::EXT_DATA_KEY, $savedRefs );
|
|
}
|
|
|
|
/**
|
|
* Hook for the InlineEditor extension.
|
|
* If any ref or reference reference tag is in the text,
|
|
* the entire page should be reparsed, so we return false in that case.
|
|
*
|
|
* @param $output
|
|
*
|
|
* @return bool
|
|
*/
|
|
function checkAnyCalls( &$output ) {
|
|
global $wgParser;
|
|
/* InlineEditor always uses $wgParser */
|
|
return ( $wgParser->extCite->mCallCnt <= 0 );
|
|
}
|
|
|
|
/**
|
|
* Initialize the parser hooks
|
|
*
|
|
* @param Parser $parser
|
|
*
|
|
* @return bool
|
|
*/
|
|
static function setHooks( Parser $parser ) {
|
|
global $wgHooks;
|
|
|
|
$parser->extCite = new self();
|
|
|
|
if ( !Cite::$hooksInstalled ) {
|
|
$wgHooks['ParserClearState'][] = array( $parser->extCite, 'clearState' );
|
|
$wgHooks['ParserCloned'][] = array( $parser->extCite, 'cloneState' );
|
|
$wgHooks['ParserAfterParse'][] = array( $parser->extCite, 'checkRefsNoReferences', true );
|
|
$wgHooks['ParserBeforeTidy'][] = array( $parser->extCite, 'checkRefsNoReferences', false );
|
|
$wgHooks['InlineEditorPartialAfterParse'][] = array( $parser->extCite, 'checkAnyCalls' );
|
|
Cite::$hooksInstalled = true;
|
|
}
|
|
$parser->setHook( 'ref', array( $parser->extCite, 'ref' ) );
|
|
$parser->setHook( 'references', array( $parser->extCite, 'references' ) );
|
|
|
|
return true;
|
|
}
|
|
|
|
/**
|
|
* Return an error message based on an error ID
|
|
*
|
|
* @param string $key Message name for the error
|
|
* @param string $param Parameter to pass to the message
|
|
* @param string $parse Whether to parse the message ('parse') or not ('noparse')
|
|
* @return string XHTML or wikitext ready for output
|
|
*/
|
|
function error( $key, $param = null, $parse = 'parse' ) {
|
|
$decreaseToWarning = false;
|
|
if (
|
|
$this->mParser->getOptions()->getIsSectionPreview() &&
|
|
$key === 'cite_error_references_no_text'
|
|
) {
|
|
// ref may be defined somewhere else on the page so use distinct message
|
|
// and be less intrusive than in a real error
|
|
$key = 'cite_warning_sectionpreview_no_text';
|
|
$decreaseToWarning = true;
|
|
}
|
|
# We rely on the fact that PHP is okay with passing unused argu-
|
|
# ments to functions. If $1 is not used in the message, wfMessage will
|
|
# just ignore the extra parameter.
|
|
# For ease of debugging and because errors are rare, we
|
|
# use the user language and split the parser cache.
|
|
$lang = $this->mParser->getOptions()->getUserLangObj();
|
|
$msg = wfMessage(
|
|
$decreaseToWarning ? 'cite_warning' : 'cite_error',
|
|
wfMessage( $key, $param )->inLanguage( $lang )->plain()
|
|
)
|
|
->inLanguage( $lang )
|
|
->plain();
|
|
|
|
if ( $decreaseToWarning ) {
|
|
$ret = '<span class="warning mw-ext-cite-warning">' . $msg . '</span>';
|
|
} else {
|
|
$this->mParser->addTrackingCategory( 'cite-tracking-category-cite-error' );
|
|
|
|
$ret = '<span class="error mw-ext-cite-error">' . $msg . '</span>';
|
|
}
|
|
|
|
if ( $parse === 'parse' ) {
|
|
$ret = $this->mParser->recursiveTagParse( $ret );
|
|
}
|
|
|
|
return $ret;
|
|
}
|
|
|
|
/**
|
|
* Fetch references stored for the given title in page_props
|
|
* For performance, results are cached
|
|
*
|
|
* @param Title $title
|
|
* @return array|false
|
|
*/
|
|
public static function getStoredReferences( Title $title ) {
|
|
global $wgCiteStoreReferencesData;
|
|
if ( !$wgCiteStoreReferencesData ) {
|
|
return false;
|
|
}
|
|
$cache = ObjectCache::getMainWANInstance();
|
|
$key = $cache->makeKey( self::EXT_DATA_KEY, $title->getArticleID() );
|
|
return $cache->getWithSetCallback(
|
|
$key,
|
|
self::CACHE_DURATION_ONFETCH,
|
|
function ( $oldValue, &$ttl, array &$setOpts ) use ( $title ) {
|
|
$dbr = wfGetDB( DB_SLAVE );
|
|
$setOpts += Database::getCacheSetOptions( $dbr );
|
|
return self::recursiveFetchRefsFromDB( $title, $dbr );
|
|
},
|
|
array(
|
|
'checkKeys' => array( $key ),
|
|
'lockTSE' => 30,
|
|
)
|
|
);
|
|
}
|
|
|
|
/**
|
|
* Reconstructs compressed json by successively retrieving the properties references-1, -2, etc
|
|
* It attempts the next step when a decoding error occurs.
|
|
* Returns json_decoded uncompressed string, with validation of json
|
|
*
|
|
* @param Title $title
|
|
* @param DatabaseBase $dbr
|
|
* @param string $string
|
|
* @param int $i
|
|
* @return array|false
|
|
*/
|
|
private static function recursiveFetchRefsFromDB( Title $title, DatabaseBase $dbr,
|
|
$string = '', $i = 1 ) {
|
|
$id = $title->getArticleID();
|
|
$result = $dbr->selectField(
|
|
'page_props',
|
|
'pp_value',
|
|
array(
|
|
'pp_page' => $id,
|
|
'pp_propname' => 'references-' . $i
|
|
),
|
|
__METHOD__
|
|
);
|
|
if ( $result !== false ) {
|
|
$string .= $result;
|
|
$decodedString = gzdecode( $string );
|
|
if ( $decodedString !== false ) {
|
|
$json = json_decode( $decodedString, true );
|
|
if ( json_last_error() === JSON_ERROR_NONE ) {
|
|
return $json;
|
|
}
|
|
// corrupted json ?
|
|
// shouldn't happen since when string is truncated, gzdecode should fail
|
|
wfDebug( "Corrupted json detected when retrieving stored references for title id $id" );
|
|
}
|
|
// if gzdecode fails, try to fetch next references- property value
|
|
return self::recursiveFetchRefsFromDB( $title, $dbr, $string, ++$i );
|
|
|
|
} else {
|
|
// no refs stored in page_props at this index
|
|
if ( $i > 1 ) {
|
|
// shouldn't happen
|
|
wfDebug( "Failed to retrieve stored references for title id $id" );
|
|
}
|
|
return false;
|
|
}
|
|
}
|
|
|
|
/**#@-*/
|
|
}
|