mirror of
https://gerrit.wikimedia.org/r/mediawiki/extensions/Cite
synced 2024-11-28 08:50:07 +00:00
f545977962
* sprintf( '%d', $key ) === (string)$key ==> ctype_digit( $key ) * die() => die( -1 ) * Moved the message cache initialization into the class
659 lines
18 KiB
PHP
659 lines
18 KiB
PHP
<?php
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if ( ! defined( 'MEDIAWIKI' ) )
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die( -1 );
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/**#@+
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* A parser extension that adds two tags, <ref> and <references> for adding
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* citations to pages
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*
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* @package MediaWiki
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* @subpackage Extensions
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*
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* @link http://meta.wikimedia.org/wiki/Cite/Cite.php Documentation
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* @link http://www.w3.org/TR/html4/struct/text.html#edef-CITE <cite> definition in HTML
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* @link http://www.w3.org/TR/2005/WD-xhtml2-20050527/mod-text.html#edef_text_cite <cite> definition in XHTML 2.0
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*
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* @bug 4579
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*
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* @author Ævar Arnfjörð Bjarmason <avarab@gmail.com>
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* @copyright Copyright © 2005, Ævar Arnfjörð Bjarmason
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* @license http://www.gnu.org/copyleft/gpl.html GNU General Public License 2.0 or later
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*/
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$wgExtensionFunctions[] = 'wfCite';
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$wgExtensionCredits['parserhook'][] = array(
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'name' => 'Cite',
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'author' => 'Ævar Arnfjörð Bjarmason',
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'description' => 'adds <nowiki><ref[ name=id]></nowiki> and <nowiki><references/></nowiki> tags, for citations',
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'url' => 'http://meta.wikimedia.org/wiki/Cite/Cite.php'
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);
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/**
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* Error codes, first array = internal errors; second array = user errors
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*/
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$wgCiteErrors = array(
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'system' => array(
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'CITE_ERROR_STR_INVALID',
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'CITE_ERROR_KEY_INVALID_1',
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'CITE_ERROR_KEY_INVALID_2',
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'CITE_ERROR_STACK_INVALID_INPUT'
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),
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'user' => array(
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'CITE_ERROR_REF_NUMERIC_KEY',
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'CITE_ERROR_REF_NO_KEY',
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'CITE_ERROR_REF_TOO_MANY_KEYS',
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'CITE_ERROR_REF_NO_INPUT',
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'CITE_ERROR_REFERENCES_INVALID_INPUT',
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'CITE_ERROR_REFERENCES_INVALID_PARAMETERS',
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'CITE_ERROR_REFERENCES_NO_BACKLINK_LABEL'
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)
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);
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for ( $i = 0; $i < count( $wgCiteErrors['system'] ); ++$i )
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// System errors are negative integers
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define( $wgCiteErrors['system'][$i], -($i + 1) );
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for ( $i = 0; $i < count( $wgCiteErrors['user'] ); ++$i )
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// User errors are positive integers
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define( $wgCiteErrors['user'][$i], $i + 1 );
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function wfCite() {
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class Cite {
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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 guarenteed 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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var $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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var $mOutCnt = 0;
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/**
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* Internal counter for anonymous references, seperate from
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* $mOutCnt because anonymous references won't increment it,
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* but will incremement $mOutCnt
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*
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* @var int
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*/
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var $mInCnt = 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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var $mBacklinkLabels;
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/**
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* @var object
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*/
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var $mParser, $mParserOptions;
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/**#@+
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* Whether or not the variables above have been loaded, doing so in a
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* request where they're not going to be used (like when thumb.php gets
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* loaded) is redundant and expensive
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*
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* @var bool
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*/
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var $mLoadedBacklinkLabels = false;
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var $mLoadedParser = false;
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/**#@-*/
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/**#@-*/
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/**
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* Constructor
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*/
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function Cite() {
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$this->setHooks();
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$this->setMessages();
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}
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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 $str Input
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* @param array $argv Arguments
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* @return string
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*/
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function ref( $str, $argv ) {
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$key = $this->refArg( $argv );
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if ( $str !== null ) {
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if ( $str === '' )
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return $this->error( CITE_ERROR_REF_NO_INPUT );
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if ( is_string( $key ) )
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// I don't want keys in the form of /^[0-9]+$/ because they would
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// conflict with the php datastructure I'm using, besides, why specify
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// a manual key if it's just going to be any old integer?
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if ( ctype_digit( $key ) )
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return $this->error( CITE_ERROR_REF_NUMERIC_KEY );
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else
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return $this->stack( $str, $key );
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else if ( $key === null )
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return $this->stack( $str );
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else if ( $key === false )
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return $this->error( CITE_ERROR_REF_TOO_MANY_KEYS );
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else
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$this->croak( CITE_ERROR_KEY_INVALID_1, serialize( $key ) );
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} else if ( $str === null ) {
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if ( is_string( $key ) )
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if ( ctype_digit( $key ) )
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return $this->error( CITE_ERROR_REF_NUMERIC_KEY );
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else
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return $this->stack( $str, $key );
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else if ( $key === false )
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return $this->error( CITE_ERROR_REF_TOO_MANY_KEYS );
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else if ( $key === null )
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return $this->error( CITE_ERROR_REF_NO_KEY );
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else
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$this->croak( CITE_ERROR_KEY_INVALID_2, serialize( $key ) );
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} else
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$this->croak( CITE_ERROR_STR_INVALID, serialize( $str ) );
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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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* @static
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*
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* @param array $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( $argv ) {
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$cnt = count( $argv );
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if ( $cnt > 1 )
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// There should only be one key
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return false;
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else if ( $cnt == 1 )
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if ( isset( $argv['name'] ) )
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// Key given.
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return array_shift( $argv );
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else
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// Invalid key
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return false;
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else
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// No key
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return null;
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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 mixed $key Argument to the <ref> tag as returned by $this->refArg()
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* @return string
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*/
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function stack( $str, $key = null ) {
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if ( $key === null ) {
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// No key
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$this->mRefs[] = $str;
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return $this->linkRef( $this->mInCnt++ );
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} else if ( is_string( $key ) )
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// Valid key
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if ( ! @is_array( $this->mRefs[$key] ) ) {
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// First occourance
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$this->mRefs[$key] = array(
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'text' => $str,
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'count' => 0,
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'number' => ++$this->mOutCnt
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);
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return
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$this->linkRef(
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$key,
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$this->mRefs[$key]['count'],
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$this->mRefs[$key]['number']
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);
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} else
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// We've been here before
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return
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$this->linkRef(
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$key,
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++$this->mRefs[$key]['count'],
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$this->mRefs[$key]['number']
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);
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else
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$this->croak( CITE_ERROR_STACK_INVALID_INPUT, serialize( array( $key, $str ) ) );
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}
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/**
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* Callback function for <references>
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*
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* @param string $str Input
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* @param array $argv Arguments
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* @return string
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*/
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function references( $str, $argv ) {
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if ( $str !== null )
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return $this->error( CITE_ERROR_REFERENCES_INVALID_INPUT );
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else if ( count( $argv ) )
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return $this->error( CITE_ERROR_REFERENCES_INVALID_PARAMETERS );
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else
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return $this->referencesFormat();
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}
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/**
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* Make output to be returned from the references() function
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*
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* @return string XHTML ready for output
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*/
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function referencesFormat() {
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$ent = array();
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foreach ( $this->mRefs as $k => $v )
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$ent[] = $this->referencesFormatEntry( $k, $v );
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$prefix = wfMsgForContentNoTrans( 'cite_references_prefix' );
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$suffix = wfMsgForContentNoTrans( 'cite_references_suffix' );
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$content = implode( "\n", $ent );
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return $this->parse( $prefix . $content . $suffix );
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}
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/**
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* Format a single entry for the referencesFormat() function
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*
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* @param string $key The key of the reference
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* @param mixed $val The value of the reference, string for anonymous
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* references, array for user-suppplied
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* @return string Wikitext
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*/
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function referencesFormatEntry( $key, $val ) {
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if ( ! is_array( $val ) )
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return
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wfMsgForContentNoTrans(
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'cite_references_link_one',
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$this->referencesKey( $key ),
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$this->refKey( $key ),
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$val
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);
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else {
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$links = array();
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for ( $i = 0; $i <= $val['count']; ++$i ) {
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$links[] = wfMsgForContentNoTrans(
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'cite_references_link_many_format',
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$this->refKey( $key, $i ),
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$this->referencesFormatEntryNumericBacklinkLabel( $val['number'], $i ),
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$this->referencesFormatEntryAlternateBacklinkLabel( $i )
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);
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}
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$list = $this->listToText( $links );
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return
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wfMsgForContentNoTrans( 'cite_references_link_many',
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$this->referencesKey( $key ),
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$list,
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$val['text']
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);
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}
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}
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/**
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* Generate a numeric backlink given a base number and an
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* offset, e.g. $base = 1, $offset = 2; = 1.2
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*
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* @static
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*
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* @param int $base The base
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* @param int $offset The offset
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* @return string
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*/
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function referencesFormatEntryNumericBacklinkLabel( $base, $offset ) {
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global $wgContLang;
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return $wgContLang->formatNum( $base + ( $offset + 1 ) / 10 );
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}
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/**
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* Generate a custom format backlink given an offset, e.g.
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* $offset = 2; = c if $this->mBacklinkLabels = array( 'a',
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* 'b', 'c', ...). Return an error if the offset > the # of
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* array items
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*
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* @param int $offset The offset
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*
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* @return string
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*/
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function referencesFormatEntryAlternateBacklinkLabel( $offset ) {
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$this->genBacklinkLabels();
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if ( isset( $this->mBacklinkLabels[$offset] ) )
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return $this->mBacklinkLabels[$offset];
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else
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// Feed me!
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return $this->error( CITE_ERROR_REFERENCES_NO_BACKLINK_LABEL );
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}
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/**
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* Return an id for use in wikitext output based on a key and
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* optionally the # of it, used in <references>, not <ref>
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* (since otherwise it would link to itself)
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*
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* @static
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*
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* @param string $key The key
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* @param int $num The number of the key
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* @return string A key for use in wikitext
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*/
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function refKey( $key, $num = null ) {
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$prefix = wfMsgForContent( 'cite_reference_link_prefix' );
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$suffix = wfMsgForContent( 'cite_reference_link_suffix' );
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if ( isset( $num ) )
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$key = wfMsgForContentNoTrans( 'cite_reference_link_key_with_num', $key, $num );
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return $prefix . $key . $suffix;
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}
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/**
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* Return an id for use in wikitext output based on a key and
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* optionally the # of it, used in <ref>, not <references>
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* (since otherwise it would link to itself)
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*
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* @static
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*
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* @param string $key The key
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* @param int $num The number of the key
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* @return string A key for use in wikitext
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*/
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function referencesKey( $key, $num = null ) {
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$prefix = wfMsgForContent( 'cite_references_link_prefix' );
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$suffix = wfMsgForContent( 'cite_references_link_suffix' );
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if ( isset( $num ) )
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$key = wfMsgForContentNoTrans( 'cite_reference_link_key_with_num', $key, $num );
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return $prefix . $key . $suffix;
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}
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/**
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* Generate a link (<sup ...) for the <ref> element from a key
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* and return XHTML ready for output
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*
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* @param string $key The key for the link
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* @param int $count The # of the key, used for distinguishing
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* multiple occourances of the same key
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* @param int $label The label to use for the link, I want to
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* use the same label for all occourances of
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* the same named reference.
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* @return string
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*/
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function linkRef( $key, $count = null, $label = null ) {
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global $wgContLang;
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return
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$this->parse(
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wfMsgForContentNoTrans(
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'cite_reference_link',
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$this->refKey( $key, $count ),
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$this->referencesKey( $key ),
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$wgContLang->formatNum( is_null( $label ) ? ++$this->mOutCnt : $label )
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)
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);
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}
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/**
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* This does approximately the same thing as
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* Langauge::listToText() but due to this being used for a
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* slightly different purpose (people might not want , as the
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* first seperator and not 'and' as the second, and this has to
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* use messages from the content language) I'm rolling my own.
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*
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* @static
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*
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* @param array $arr The array to format
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* @return string
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*/
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function listToText( $arr ) {
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$cnt = count( $arr );
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$sep = wfMsgForContentNoTrans( 'cite_references_link_many_sep' );
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$and = wfMsgForContentNoTrans( 'cite_references_link_many_and' );
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if ( $cnt == 1 )
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// Enforce always returning a string
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return (string)$arr[0];
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else {
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$t = array_slice( $arr, 0, $cnt - 1 );
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return implode( $sep, $t ) . $and . $arr[$cnt - 1];
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}
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}
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/**
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* Parse a given fragment and fix up Tidy's trail of blood on
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* it...
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*
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* @param string $in The text to parse
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* @return string The parsed text
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*/
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function parse( $in ) {
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if ( ! $this->mLoadedParser )
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$this->genParser();
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global $wgTitle;
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$ret = $this->mParser->parse(
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$in,
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$wgTitle,
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$this->mParserOptions,
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// Avoid whitespace buildup
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false,
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// Important, otherwise $this->clearState()
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// would get run every time <ref> or
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// <references> is called, fucking the whole
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// thing up.
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false
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);
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$text = $ret->getText();
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return $this->fixTidy( $text );
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}
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/**
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* Tidy treats all input as a block, it will e.g. wrap most
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* input in <p> if it isn't already, fix that and return the fixed text
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*
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* @static
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*
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* @param string $text The text to fix
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* @return string The fixed text
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*/
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function fixTidy( $text ) {
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global $wgUseTidy;
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if ( ! $wgUseTidy )
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return $text;
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else {
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$text = preg_replace( '~^<p>\s*~', '', $text );
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$text = preg_replace( '~\s*</p>\s*~', '', $text );
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$text = preg_replace( '~\n$~', '', $text );
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return $text;
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}
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}
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/**
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* $wgOut->parse() has issues with the elements defined in
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* setHooks() being used inside includes templates so I'm
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* rolling my own parser
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*/
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function genParser() {
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$this->mParser = new Parser;
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$this->mParserOptions = new ParserOptions;
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$this->mLoadedParser = true;
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}
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/**
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* Generate the labels to pass to the
|
|
* 'cite_references_link_many_format' message, the format is an
|
|
* arbitary number of tokens seperated by [\t\n ]
|
|
*/
|
|
function genBacklinkLabels() {
|
|
if ( $this->mLoadedBacklinkLabels )
|
|
return;
|
|
$text = wfMsgForContentNoTrans( 'cite_references_link_many_format_backlink_labels' );
|
|
$this->mBacklinkLabels = preg_split( '#[\n\t ]#', $text );
|
|
$this->mLoadedBacklinkLabels = true;
|
|
}
|
|
|
|
/**
|
|
* Gets run when Parser::clearState() gets run, since we don't
|
|
* want the counts to transcend pages and other instances
|
|
*/
|
|
function clearState() {
|
|
$this->mOutCnt = $this->mInCnt = 0;
|
|
$this->mRefs = array();
|
|
|
|
return true;
|
|
}
|
|
|
|
/**
|
|
* Initialize the parser hooks
|
|
*/
|
|
function setHooks() {
|
|
global $wgParser, $wgHooks;
|
|
|
|
$wgParser->setHook( 'ref' , array( &$this, 'ref' ) );
|
|
$wgParser->setHook( 'references' , array( &$this, 'references' ) );
|
|
|
|
$wgHooks['ParserClearState'][] = array( &$this, 'clearState' );
|
|
}
|
|
|
|
/**
|
|
* Initialize the messages
|
|
*/
|
|
function setMessages() {
|
|
global $wgMessageCache;
|
|
|
|
$wgMessageCache->addMessages(
|
|
array(
|
|
/*
|
|
Debug & errors
|
|
*/
|
|
|
|
// Internal errors
|
|
'cite_croak' => 'Cite croaked; $1: $2',
|
|
|
|
'cite_error_' . CITE_ERROR_STR_INVALID => 'Internal error; invalid $str',
|
|
'cite_error_' . CITE_ERROR_KEY_INVALID_1 => 'Internal error; invalid key',
|
|
'cite_error_' . CITE_ERROR_KEY_INVALID_2 => 'Internal error; invalid key',
|
|
'cite_error_' . CITE_ERROR_STACK_INVALID_INPUT => 'Internal error; invalid stack key',
|
|
|
|
// User errors
|
|
'cite_error' => 'Cite error $1; $2',
|
|
|
|
'cite_error_' . CITE_ERROR_REF_NUMERIC_KEY => 'Invalid call; expecting a non-integer key',
|
|
'cite_error_' . CITE_ERROR_REF_NO_KEY => 'Invalid call; no key specified',
|
|
'cite_error_' . CITE_ERROR_REF_TOO_MANY_KEYS => 'Invalid call; invalid keys, e.g. too many or wrong key specified',
|
|
'cite_error_' . CITE_ERROR_REF_NO_INPUT => 'Invalid call; no input specified',
|
|
'cite_error_' . CITE_ERROR_REFERENCES_INVALID_INPUT => 'Invalid input; expecting none',
|
|
'cite_error_' . CITE_ERROR_REFERENCES_INVALID_PARAMETERS => 'Invalid parameters; expecting none',
|
|
'cite_error_' . CITE_ERROR_REFERENCES_NO_BACKLINK_LABEL => "Ran out of custom backlink labels, define more in the \"''cite_references_link_many_format_backlink_labels''\" message",
|
|
|
|
/*
|
|
Output formatting
|
|
*/
|
|
'cite_reference_link_key_with_num' => '$1_$2',
|
|
// Ids produced by <ref>
|
|
'cite_reference_link_prefix' => '_ref-',
|
|
'cite_reference_link_suffix' => '',
|
|
// Ids produced by <references>
|
|
'cite_references_link_prefix' => '_note-',
|
|
'cite_references_link_suffix' => '',
|
|
|
|
'cite_reference_link' => '<sup id="$1" class="reference">[[#$2|<nowiki>[</nowiki>$3<nowiki>]</nowiki>]]</sup>',
|
|
'cite_references_link_one' => '<li id="$1">[[#$2|^]] $3</li>',
|
|
'cite_references_link_many' => '<li id="$1">^ $2 $3</li>',
|
|
'cite_references_link_many_format' => '[[#$1|<sup>$2</sup>]]',
|
|
// An item from this set is passed as $3 in the message above
|
|
'cite_references_link_many_format_backlink_labels' => 'a b c d e f g h i j k l m n o p q r s t u v w x y z',
|
|
'cite_references_link_many_sep' => "\xc2\xa0", //
|
|
'cite_references_link_many_and' => "\xc2\xa0", // &nbps;
|
|
|
|
// Although I could just use # instead of <li> above and nothing here that
|
|
// will break on input that contains linebreaks
|
|
'cite_references_prefix' => '<ol class="references">',
|
|
'cite_references_suffix' => '</ol>',
|
|
)
|
|
);
|
|
}
|
|
|
|
/**
|
|
* Return an error message based on an error ID
|
|
*
|
|
* @param int $id ID for the error
|
|
* @return string XHTML ready for output
|
|
*/
|
|
function error( $id ) {
|
|
if ( $id > 0 )
|
|
// User errors are positive
|
|
return
|
|
$this->parse(
|
|
'<strong class="error">' .
|
|
wfMsgforContent( 'cite_error', $id, wfMsgForContent( "cite_error_$id" ) ) .
|
|
'</strong>'
|
|
);
|
|
else if ( $id < 0 )
|
|
return wfMsgforContent( 'cite_error', $id );
|
|
}
|
|
|
|
/**
|
|
* Die with a backtrace if something happens in the code which
|
|
* shouldn't have
|
|
*
|
|
* @param int $error ID for the error
|
|
* @param string $data Serialized error data
|
|
*/
|
|
function croak( $error, $data ) {
|
|
wfDebugDieBacktrace( wfMsgForContent( 'cite_croak', $this->error( $error ), $data ) );
|
|
}
|
|
|
|
/**#@-*/
|
|
}
|
|
|
|
new Cite;
|
|
}
|
|
|
|
/**#@-*/
|