mirror of
https://gerrit.wikimedia.org/r/mediawiki/extensions/Cite
synced 2024-11-28 08:50:07 +00:00
e8786ea9b5
It isn't obviously clear how this is meant to be used, and there are no test cases for the newly added mode. Newly added code doesn't match our code standards, making it harder to read, and contains mysterious things like "$argv=array_merge($argv);" which seem a bit odd.
693 lines
19 KiB
PHP
693 lines
19 KiB
PHP
<?php
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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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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 = Sanitizer::escapeId( $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 = $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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* 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 ( strval( $str ) !== '' )
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return $this->error( 'cite_error_references_invalid_input' );
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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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return $this->error( 'cite_error_references_invalid_parameters' );
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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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* 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 (empty( $this->mRefs[$group] ) ))
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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( $max );
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$ret = $wgContLang->formatNum(
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sprintf("%s.%0{$scope}s", $base, $offset)
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);
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return $ret;
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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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if ( !isset( $this->mBacklinkLabels ) ) {
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$this->genBacklinkLabels();
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}
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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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/**
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* Return an id for use in wikitext output based on a key and
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* optionally the number 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 number 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 );
|
|
|
|
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 ]#', $text );
|
|
wfProfileOut( __METHOD__ );
|
|
}
|
|
|
|
/**
|
|
* Gets run when Parser::clearState() gets run, since we don't
|
|
* want the counts to transcend pages and other instances
|
|
*/
|
|
function clearState() {
|
|
# Don't clear state when we're in the middle of parsing
|
|
# a <ref> tag
|
|
if($this->mInCite)
|
|
return true;
|
|
|
|
$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 ) );
|
|
}
|
|
|
|
/**#@-*/
|
|
}
|
|
|
|
?>
|