mirror of
https://gerrit.wikimedia.org/r/mediawiki/extensions/Cite
synced 2024-11-12 01:01:29 +00:00
e1a1da382d
* Add new message 'cite_error_references_invalid_parameters_group' to clarify error message when $wgAllowCiteGroups=true (default) * Rephrase 'cite_error_references_no_backlink_label' a bit to make it clearer that 'cite_references_link_many_format_backlink_labels' is a MediaWiki message
745 lines
21 KiB
PHP
745 lines
21 KiB
PHP
<?php
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if ( ! defined( 'MEDIAWIKI' ) )
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die();
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/**#@+
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* A parser extension that adds two tags, <ref> and <references> for adding
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* citations to pages
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*
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* @addtogroup Extensions
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*
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* @link http://meta.wikimedia.org/wiki/Cite/Cite.php Documentation
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* @link http://www.w3.org/TR/html4/struct/text.html#edef-CITE <cite> definition in HTML
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* @link http://www.w3.org/TR/2005/WD-xhtml2-20050527/mod-text.html#edef_text_cite <cite> definition in XHTML 2.0
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*
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* @bug 4579
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*
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* @author Ævar Arnfjörð Bjarmason <avarab@gmail.com>
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* @copyright Copyright © 2005, Ævar Arnfjörð Bjarmason
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* @license http://www.gnu.org/copyleft/gpl.html GNU General Public License 2.0 or later
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*/
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$wgExtensionFunctions[] = 'wfCite';
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$wgExtensionCredits['parserhook'][] = array(
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'name' => 'Cite',
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'version' => preg_replace('/^.* (\d\d\d\d-\d\d-\d\d) .*$/', '\1', '$LastChangedDate$'), #just the date of the last change
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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', // kept for b/c
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'descriptionmsg' => 'cite_desc',
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'url' => 'http://www.mediawiki.org/wiki/Extension:Cite/Cite.php'
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);
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$wgParserTestFiles[] = dirname( __FILE__ ) . "/citeParserTests.txt";
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$wgExtensionMessagesFiles['Cite'] = dirname( __FILE__ ) . "/Cite.i18n.php";
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define( 'CITE_DEFAULT_GROUP', '');
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/**
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* The emergency shut-off switch. Override in local settings to disable
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* groups; or remove all references from this file to enable unconditionally
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*/
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$wgAllowCiteGroups = true;
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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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var $mGroupCnt = array();
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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;
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/**
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* True when a <ref> or <references> 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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var $mInCite = false;
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/**#@-*/
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/**
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* Constructor
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*/
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function Cite() {
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$this->setHooks();
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}
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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, $parser ) {
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wfLoadExtensionMessages( 'Cite' );
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if ( $this->mInCite ) {
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return htmlspecialchars( "<ref>$str</ref>" );
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} else {
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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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return $ret;
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}
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}
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function guardedRef( $str, $argv, $parser, $default_group=CITE_DEFAULT_GROUP ) {
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$this->mParser = $parser;
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# The key here is the "name" attribute.
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list($key,$group) = $this->refArg( $argv );
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if( $str === '' ) {
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# <ref ...></ref>. This construct is always invalid: either
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# it's a contentful ref, or it's a named duplicate and should
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# be <ref ... />.
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return $this->error( 'cite_error_ref_no_input' );
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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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return $this->error( 'cite_error_ref_too_many_keys' );
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}
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if( $str === null and $key === null ) {
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# Something like <ref />; this makes no sense.
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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 ) ) {
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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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return $this->error( 'cite_error_ref_numeric_key' );
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}
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#Split these into groups.
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if( $group === null ) {
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$group = $default_group;
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}
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if( is_string( $key ) or 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, $group );
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}
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# Not clear how we could get here, but something is probably
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# wrong with the types. Let's fail fast.
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$this->croak( 'cite_error_key_str_invalid', serialize( "$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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* @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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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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if ( $cnt > 2 )
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// There should only be one key and one group
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return false;
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else if ( $cnt >= 1 ) {
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if ( isset( $argv['name'] ) ) {
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// Key given.
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$key = $this->validateName( $argv['name'] );
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unset( $argv['name']);
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--$cnt;
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}
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if ( isset( $argv['group'] ) ){
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if (! $wgAllowCiteGroups ) return array(false); //remove when groups are fully tested.
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// Group given.
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$group = $this->validateName( $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,$group);
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else
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// Invalid key
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return array(false);
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}
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else
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// No key
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return array(null,$group);
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}
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/**
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* Since the key name is used in an XHTML id attribute, it must
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* conform to the validity rules. The restriction to begin with
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* a letter is lifted since references have their own prefix.
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*
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* @fixme merge this code with the various section name transformations
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* @fixme double-check for complete validity
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* @return string if valid, false if invalid
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*/
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function validateName( $name ) {
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if( preg_match( '/^[A-Za-z0-9:_.-]*$/i', $name ) ) {
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return $name;
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} else {
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// WARNING: CRAPPY CUT AND PASTE MAKES BABY JESUS CRY
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$text = urlencode( str_replace( ' ', '_', $name ) );
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$replacearray = array(
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'%3A' => ':',
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'%' => '.'
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);
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return str_replace(
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array_keys( $replacearray ),
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array_values( $replacearray ),
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$text );
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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 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, $group ) {
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if (! isset($this->mRefs[$group]))
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$this->mRefs[$group]=array();
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if (! isset($this->mGroupCnt[$group]))
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$this->mGroupCnt[$group]=0;
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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[$group][] = array('count'=>-1, 'text'=>$str, 'key'=>++$this->mOutCnt);
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return $this->linkRef( $group, $this->mInCnt++ );
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} else if ( is_string( $key ) ) {
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// Valid key
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if ( ! isset( $this->mRefs[$group][$key] ) || ! is_array( $this->mRefs[$group][$key] ) ) {
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// First occurance
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$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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$this->mInCnt++;
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return
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$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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} else {
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// We've been here before
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if ( $this->mRefs[$group][$key]['text'] === null && $str !== '' ) {
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// If no text found before, use this text
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$this->mRefs[$group][$key]['text'] = $str;
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};
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return
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$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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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, $parser ) {
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wfLoadExtensionMessages( 'Cite' );
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if ( $this->mInCite ) {
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if ( is_null( $str ) ) {
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return htmlspecialchars( "<references/>" );
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} else {
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return htmlspecialchars( "<references>$str</references>" );
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}
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} else {
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$this->mInCite = true;
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$ret = $this->guardedReferences( $str, $argv, $parser );
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$this->mInCite = false;
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return $ret;
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}
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}
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function guardedReferences( $str, $argv, $parser, $group = CITE_DEFAULT_GROUP ) {
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global $wgAllowCiteGroups;
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$this->mParser = $parser;
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if ( $str !== null ) {
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return $this->error( 'cite_error_references_invalid_input' );
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}
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if ( isset( $argv['group'] ) and $wgAllowCiteGroups) {
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$group = $argv['group'];
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unset ($argv['group']);
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}
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if ( count( $argv ) ) {
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if( $wgAllowCiteGroups ) {
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return $this->error( 'cite_error_references_invalid_parameters_group' );
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} else {
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return $this->error( 'cite_error_references_invalid_parameters' );
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}
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} elseif ( $wgAllowCiteGroups && !isset( $this->mRefs[$group] ) ) {
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return $this->error( 'cite_error_references_invalid_group', htmlspecialchars( $group ) );
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} else {
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return $this->referencesFormat( $group );
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}
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}
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/**
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* Make output to be returned from the references() function
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*
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* @return string XHTML ready for output
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*/
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function referencesFormat($group) {
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if (( count( $this->mRefs ) == 0 ) or (count( $this->mRefs[$group] ) == 0 ))
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return '';
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wfProfileIn( __METHOD__ );
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wfProfileIn( __METHOD__ .'-entries' );
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$ent = array();
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foreach ( $this->mRefs[$group] 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", $ent );
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wfProfileOut( __METHOD__ .'-entries' );
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wfProfileIn( __METHOD__ .'-parse' );
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// Live hack: parse() adds two newlines on WM, can't reproduce it locally -ævar
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$ret = rtrim( $this->parse( $prefix . $content . $suffix ), "\n" );
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wfProfileOut( __METHOD__ .'-parse' );
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wfProfileOut( __METHOD__ );
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//done, clean up so we can reuse the group
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unset ($this->mRefs[$group]);
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unset($this->mGroupCnt[$group]);
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return $ret;
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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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// Anonymous reference
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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 if ($val['text']=='') return
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wfMsgForContentNoTrans(
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'cite_references_link_one',
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$this->referencesKey( $key ),
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$this->refKey( $key, $val['count'] ),
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$this->error( 'cite_error_references_no_text', $key )
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);
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if ( $val['count'] < 0 )
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return
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wfMsgForContentNoTrans(
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'cite_references_link_one',
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$this->referencesKey( $val['key'] ),
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#$this->refKey( $val['key'], $val['count'] ),
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$this->refKey( $val['key'] ),
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( $val['text'] != '' ? $val['text'] : $this->error( 'cite_error_references_no_text', $key ) )
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);
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// Standalone named reference, I want to format this like an
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// anonymous reference because displaying "1. 1.1 Ref text" is
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// overkill and users frequently use named references when they
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// don't need them for convenience
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else if ( $val['count'] === 0 )
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return
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wfMsgForContentNoTrans(
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'cite_references_link_one',
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$this->referencesKey( $key ."-" . $val['key'] ),
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#$this->refKey( $key, $val['count'] ),
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$this->refKey( $key, $val['key']."-".$val['count'] ),
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( $val['text'] != '' ? $val['text'] : $this->error( 'cite_error_references_no_text', $key ) )
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);
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// Named references with >1 occurrences
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else {
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$links = array();
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//for group handling, we have an extra key here.
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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, $val['key']."-$i" ),
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$this->referencesFormatEntryNumericBacklinkLabel( $val['number'], $i, $val['count'] ),
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$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 ."-" . $val['key'] ),
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$list,
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( $val['text'] != '' ? $val['text'] : $this->error( 'cite_error_references_no_text', $key ) )
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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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* Since bug #5525, it correctly does 1.9 -> 1.10 as well as 1.099 -> 1.100
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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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* @param int $max Maximum value expected.
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* @return string
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*/
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function referencesFormatEntryNumericBacklinkLabel( $base, $offset, $max ) {
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global $wgContLang;
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|
$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' );
|
|
}
|
|
}
|
|
|
|
/**
|
|
* 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 = wfMsgForContent( 'cite_reference_link_prefix' );
|
|
$suffix = wfMsgForContent( 'cite_reference_link_suffix' );
|
|
if ( isset( $num ) )
|
|
$key = wfMsgForContentNoTrans( 'cite_reference_link_key_with_num', $key, $num );
|
|
|
|
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
|
|
*/
|
|
function referencesKey( $key, $num = null ) {
|
|
$prefix = wfMsgForContent( 'cite_references_link_prefix' );
|
|
$suffix = wfMsgForContent( 'cite_references_link_suffix' );
|
|
if ( isset( $num ) )
|
|
$key = wfMsgForContentNoTrans( 'cite_reference_link_key_with_num', $key, $num );
|
|
|
|
return $prefix . $key . $suffix;
|
|
}
|
|
|
|
/**
|
|
* Generate a link (<sup ...) for the <ref> element from a key
|
|
* and return XHTML ready for output
|
|
*
|
|
* @param string $key The key for the link
|
|
* @param int $count The index of the key, used for distinguishing
|
|
* multiple occurances 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.
|
|
* @return string
|
|
*/
|
|
function linkRef( $group, $key, $count = null, $label = null, $subkey = '' ) {
|
|
global $wgContLang;
|
|
return
|
|
$this->parse(
|
|
wfMsgForContentNoTrans(
|
|
'cite_reference_link',
|
|
$this->refKey( $key, $count ),
|
|
$this->referencesKey( $key . $subkey ),
|
|
(($group == CITE_DEFAULT_GROUP)?'':"$group ").$wgContLang->formatNum( is_null( $label ) ? ++$this->mGroupCnt[$group] : $label )
|
|
)
|
|
);
|
|
}
|
|
|
|
/**
|
|
* 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 seperator 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 = wfMsgForContentNoTrans( 'cite_references_link_many_sep' );
|
|
$and = wfMsgForContentNoTrans( 'cite_references_link_many_and' );
|
|
|
|
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];
|
|
}
|
|
}
|
|
|
|
/**
|
|
* Parse a given fragment and fix up Tidy's trail of blood on
|
|
* it...
|
|
*
|
|
* @param string $in The text to parse
|
|
* @return string The parsed text
|
|
*/
|
|
function parse( $in ) {
|
|
if ( method_exists( $this->mParser, 'recursiveTagParse' ) ) {
|
|
// New fast method
|
|
return $this->mParser->recursiveTagParse( $in );
|
|
} else {
|
|
// Old method
|
|
$ret = $this->mParser->parse(
|
|
$in,
|
|
$this->mParser->mTitle,
|
|
$this->mParser->mOptions,
|
|
// Avoid whitespace buildup
|
|
false,
|
|
// Important, otherwise $this->clearState()
|
|
// would get run every time <ref> or
|
|
// <references> is called, fucking the whole
|
|
// thing up.
|
|
false
|
|
);
|
|
$text = $ret->getText();
|
|
|
|
return $this->fixTidy( $text );
|
|
}
|
|
}
|
|
|
|
/**
|
|
* Tidy treats all input as a block, it will e.g. wrap most
|
|
* input in <p> if it isn't already, fix that and return the fixed text
|
|
*
|
|
* @static
|
|
*
|
|
* @param string $text The text to fix
|
|
* @return string The fixed text
|
|
*/
|
|
function fixTidy( $text ) {
|
|
global $wgUseTidy;
|
|
|
|
if ( ! $wgUseTidy )
|
|
return $text;
|
|
else {
|
|
$text = preg_replace( '~^<p>\s*~', '', $text );
|
|
$text = preg_replace( '~\s*</p>\s*~', '', $text );
|
|
$text = preg_replace( '~\n$~', '', $text );
|
|
|
|
return $text;
|
|
}
|
|
}
|
|
|
|
/**
|
|
* 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() {
|
|
wfProfileIn( __METHOD__ );
|
|
$text = wfMsgForContentNoTrans( 'cite_references_link_many_format_backlink_labels' );
|
|
$this->mBacklinkLabels = preg_split( '#[\n\t ]#', $text );
|
|
wfProfileOut( __METHOD__ );
|
|
}
|
|
|
|
/**
|
|
* Gets run when Parser::clearState() gets run, since we don't
|
|
* want the counts to transcend pages and other instances
|
|
*/
|
|
function clearState() {
|
|
$this->mGroupCnt = array();
|
|
$this->mOutCnt = -1;
|
|
$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' );
|
|
}
|
|
|
|
/**
|
|
* 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
|
|
* @return string XHTML ready for output
|
|
*/
|
|
function error( $key, $param=null ) {
|
|
# We rely on the fact that PHP is okay with passing unused argu-
|
|
# ments to functions. If $1 is not used in the message, wfMsg will
|
|
# just ignore the extra parameter.
|
|
return
|
|
$this->parse(
|
|
'<strong class="error">' .
|
|
wfMsg( 'cite_error', wfMsg( $key, $param ) ) .
|
|
'</strong>'
|
|
);
|
|
}
|
|
|
|
/**
|
|
* 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;
|
|
}
|
|
|
|
/**#@-*/
|
|
|