mirror of
https://gerrit.wikimedia.org/r/mediawiki/extensions/VisualEditor
synced 2024-11-15 18:39:52 +00:00
8368e17d6a
* All parser pipelines including tokenizer and DOM stuff are now constructed
from a 'recipe' data structure in a ParserPipelineFactory.
* All sub-pipelines of these can now be cached
* Event registrations to a pipeline are directly forwarded to the last
pipeline member to save relatively expensive event forwarding.
* Some APIs for on-demand expansion / format conversion of parameters from
parser functions are added:
param.to('tokens/expanded', cb)
param.to('text/wiki', cb) (this does not work yet)
All parameters are additionally wrapped into a Param object that provides
method for positional parameter naming (.named() or conversion to a dict
(.dict()).
* The async token transform manager is now separated from a frame object, with
the frame holding arguments, an on-demand expansion method and loop checks.
* Only keys of template parameters are now expanded. Parser functions or
template arguments trigger an expansion on-demand. This (unsurprisingly)
makes a big performance difference with typical switch-heavy template
systems.
* Return values from async transforms are no longer used in favor of plain
callbacks. This saves the complication of having to maintain two code paths.
A trick in transformTokens still avoids the construction of unneeded
TokenAccumulators.
* The results of template expansions are no longer buffered.
* 301 parser tests are passing
Known issues:
* Cosmetic cleanup remains to do
* Some parser functions do not support async expansions yet, and need to be
modified.
Change-Id: I1a7690baffbe8141cadf67270904a1b2e1df879a
562 lines
18 KiB
JavaScript
562 lines
18 KiB
JavaScript
/**
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* Some parser functions, and quite a bunch of stubs of parser functions.
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* There are still quite a few missing, see
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* http://www.mediawiki.org/wiki/Help:Magic_words and
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* http://www.mediawiki.org/wiki/Help:Extension:ParserFunctions.
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* Instantiated and called by the TemplateHandler extension. Any pf_<prefix>
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* matching a lower-cased template name prefix up to the first colon will
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* override that template.
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*
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* TODO: Implement these more thoroughly, and test against
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* extensions/ParserFunction/
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* convertTests.txt
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* exprTests.txt
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* funcsParserTests.txt
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* stringFunctionTests.txt
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*
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* @author Gabriel Wicke <gwicke@wikimedia.org>
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*/
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function ParserFunctions ( manager ) {
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this.manager = manager;
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this.env = manager.env;
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}
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// Temporary helper.
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ParserFunctions.prototype._rejoinKV = function ( kv ) {
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if ( kv.k && kv.k.length ) {
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return kv.k.concat( ['='], kv.v );
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} else {
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return kv.v;
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}
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};
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ParserFunctions.prototype['pf_#if'] = function ( token, frame, cb, args ) {
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var target = args[0].k;
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if ( target.trim() !== '' ) {
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//this.env.dp('#if, first branch', target.trim(), argDict[1] );
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cb( { tokens: (args[1] && this._rejoinKV( args[1] ) || [] ) } );
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} else {
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//this.env.dp('#if, second branch', target.trim(), argDict[2] );
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cb( { tokens: (args[2] && this._rejoinKV( args[2] ) || [] ) } );
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}
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};
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ParserFunctions.prototype._switchLookupFallback = function ( kvs, key, dict, cb, v ) {
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var kv,
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l = kvs.length;
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this.manager.env.dp('_switchLookupFallback', kvs.length, key, v );
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if ( v && key === this.manager.env.tokensToString( v ).trim() ) {
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// found. now look for the next entry with a non-empty key.
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this.manager.env.dp( 'switch found' );
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for ( var j = 0; j < l; j++) {
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kv = kvs[j];
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// XXX: make sure the key is always one of these!
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if ( kv.k.length ) {
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return cb( { tokens: kv.v } );
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}
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}
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// No value found, return empty string? XXX: check this
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return cb( { } );
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} else if ( kvs.length ) {
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var i = 0;
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if ( v ) {
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i = 1;
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}
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for ( ; i < l; i++ ) {
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kv = kvs[i];
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if ( kv.k.length || !kv.v.length ) {
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continue;
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} else if ( kv.v.constructor === String ) {
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if ( kv.v.trim() !== key ) {
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// Shortcut
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continue
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} else {
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return this._switchLookupFallback( kvs.slice(i), key, dict, cb, kv.v );
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}
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} else {
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return kv.v.to('tokens/expanded',
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this._switchLookupFallback.bind( this, kvs.slice(i), key, dict, cb ) );
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}
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}
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// value not found!
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if ( '#default' in dict ) {
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cb( { tokens: dict['#default'] } );
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} else if ( kvs.length ) {
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var lastKV = kvs[kvs.length - 1];
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if ( lastKV && ! lastKV.k.length ) {
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cb ( { tokens: lastKV.v } );
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} else {
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cb ( {} );
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}
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} else {
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cb ( {} );
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}
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}
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};
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// TODO: Implement
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// http://www.mediawiki.org/wiki/Help:Extension:ParserFunctions#Grouping_results
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ParserFunctions.prototype['pf_#switch'] = function ( token, frame, cb, args ) {
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target = args[0].k.trim();
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this.env.dp( 'switch enter', target, token );
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// create a dict from the remaining args
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args.shift();
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var dict = args.dict();
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if ( dict[target] !== undefined ) {
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this.env.dp( 'switch found: ', target, dict, ' res=', dict[target] );
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cb ( {tokens: dict[target] } );
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} else {
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cb ( { async: true } );
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this._switchLookupFallback( args, target, dict, cb );
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}
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};
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// #ifeq
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ParserFunctions.prototype['pf_#ifeq'] = function ( token, frame, cb, args ) {
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if ( args.length < 3 ) {
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cb( {} );
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} else {
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if ( args[0].k.trim() === this.env.tokensToString( args[1].v ).trim() ) {
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cb( { tokens: ( args[2] && this._rejoinKV( args[2] ) || [] ) } );
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} else {
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cb( { tokens: ( args[3] && this._rejoinKV( args[3] ) || [] ) } );
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}
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}
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};
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ParserFunctions.prototype['pf_#expr'] = function ( token, frame, cb, args ) {
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var res,
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target = args[0].k;
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if ( target ) {
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try {
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// FIXME: make this safe and implement MW expressions!
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var f = new Function ( 'return (' + target + ')' );
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res = f();
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} catch ( e ) {
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return cb( { tokens: [ 'class="error" in expression ' + target ] } );
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}
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} else {
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res = '';
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}
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cb( { tokens: [ res.toString() ] } );
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};
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ParserFunctions.prototype['pf_#ifexpr'] = function ( token, frame, cb, args ) {
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this.env.dp( '#ifexp: ' + JSON.stringify( args ) );
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var res = null,
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target = args[0].k;
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if ( target ) {
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try {
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// FIXME: make this safe, and fully implement MW expressions!
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var f = new Function ( 'return (' + target + ')' );
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res = f();
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} catch ( e ) {
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cb( { tokens: [ 'class="error" in expression ' + target ] } );
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}
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}
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if ( res ) {
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cb( { tokens: args[1] && this._rejoinKV( args[1] ) || [] } );
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} else {
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cb( { tokens: args[2] && this._rejoinKV( args[2] ) || [] } );
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}
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};
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ParserFunctions.prototype['pf_#iferror'] = function ( token, frame, cb, args ) {
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var target = args[0].k;
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if ( target.indexOf( 'class="error"' ) >= 0 ) {
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cb( { tokens: args[1] && args[1].v || [] } );
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} else {
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cb( { tokens: args[2] && args[2].v || [ target ] } );
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}
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};
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ParserFunctions.prototype.pf_lc = function ( token, frame, cb, args ) {
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cb( { tokens: [ args[0].k.toLowerCase() ] } );
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};
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ParserFunctions.prototype.pf_uc = function ( token, frame, cb, args ) {
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cb( { tokens: [ args[0].k.toUpperCase() ] } );
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};
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ParserFunctions.prototype.pf_ucfirst = function ( token, frame, cb, args ) {
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var target = args[0].k;
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if ( target ) {
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cb( { tokens: [ target[0].toUpperCase() + target.substr(1) ] } );
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} else {
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cb( {} );
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}
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};
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ParserFunctions.prototype.pf_lcfirst = function ( token, frame, cb, args ) {
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var target = args[0].k;
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if ( target ) {
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cb( { tokens: [ target[0].toLowerCase() + target.substr(1) ] } );
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} else {
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cb( {} );
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}
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};
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ParserFunctions.prototype.pf_padleft = function ( token, frame, cb, args ) {
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var target = args[0].k,
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pad;
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if ( args[1] && args[1].v > 0) {
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if ( args[2] && args[2].v ) {
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pad = args[2].v;
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} else {
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pad = '0';
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}
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var n = args[1].v;
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while ( target.length < n ) {
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target = pad + target;
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}
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cb( { tokens: [target] } );
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} else {
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cb( {} );
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}
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};
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ParserFunctions.prototype.pf_padright = function ( token, frame, cb, args ) {
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var target = args[0].k;
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if ( args[1] && args[1].v > 0) {
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if ( args[2] && args[2].v ) {
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pad = args[2].v;
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} else {
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pad = '0';
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}
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var n = args[1].v;
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while ( target.length < n ) {
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target = target + pad;
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}
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cb( { tokens: [target] } );
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} else {
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cb( {} );
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}
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};
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ParserFunctions.prototype['pf_#tag'] = function ( token, frame, cb, args ) {
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// TODO: handle things like {{#tag:nowiki|{{{input1|[[shouldnotbelink]]}}}}}
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// https://www.mediawiki.org/wiki/Future/Parser_development#Token_stream_transforms
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var target = args[0].k;
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cb( { tokens: ( [ new TagTk( target ) ]
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.concat( args[1].v,
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[ new EndTagTk( target ) ] ) ) } );
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};
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// TODO: These are just quick wrappers for now, optimize!
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ParserFunctions.prototype.pf_currentyear = function ( token, frame, cb, args ) {
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cb( this._pf_time_tokens( 'Y', [], {} ) );
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};
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ParserFunctions.prototype.pf_currentmonth = function ( token, frame, cb, args ) {
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cb( this._pf_time_tokens( 'm', [], {} ) );
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};
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ParserFunctions.prototype.pf_currentmonthname = function ( token, frame, cb, args ) {
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cb( this._pf_time_tokens( 'F', [], {} ) );
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};
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// XXX Actually use genitive form!
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ParserFunctions.prototype.pf_currentmonthnamegen = function ( token, frame, cb, args ) {
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cb( this._pf_time_tokens( 'F', [], {} ) );
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};
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ParserFunctions.prototype.pf_currentmonthabbrev = function ( token, frame, cb, args ) {
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cb( this._pf_time_tokens( 'M', [], {} ) );
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};
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ParserFunctions.prototype.pf_currentweek = function ( token, frame, cb, args ) {
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cb( this._pf_time_tokens( 'W', [], {} ) );
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};
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ParserFunctions.prototype.pf_currentdow = function ( token, frame, cb, args ) {
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cb( this._pf_time_tokens( 'w', [], {} ) );
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};
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ParserFunctions.prototype.pf_currentday = function ( token, frame, cb, args ) {
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cb( this._pf_time_tokens( 'j', [], {} ) );
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};
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ParserFunctions.prototype.pf_currentday2 = function ( token, frame, cb, args ) {
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cb( this._pf_time_tokens( 'd', [], {} ) );
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};
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ParserFunctions.prototype.pf_currentdayname = function ( token, frame, cb, args ) {
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cb( this._pf_time_tokens( 'l', [], {} ) );
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};
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ParserFunctions.prototype.pf_currenttime = function ( token, frame, cb, args ) {
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cb( this._pf_time_tokens( 'H:i', [], {} ) );
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};
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// A first approximation of time stuff.
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// TODO: Implement time spec (+ 1 day etc), check if formats are complete etc.
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// See http://www.mediawiki.org/wiki/Help:Extension:ParserFunctions#.23time
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// for the full list of requirements!
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//
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// First (very rough) approximation below based on
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// http://jacwright.com/projects/javascript/date_format/, MIT licensed.
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ParserFunctions.prototype['pf_#time'] = function ( token, frame, cb, args ) {
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cb ( { tokens: this._pf_time( args[0].k, args.slice(1) ) } );
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};
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ParserFunctions.prototype._pf_time_tokens = function ( target, args ) {
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return { tokens: this._pf_time( target, args ) };
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};
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ParserFunctions.prototype._pf_time = function ( target, args ) {
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var res,
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tpl = target.trim();
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//try {
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// var date = new Date( this.env.tokensToString( args[1].v ) );
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// res = [ date.format( target ) ];
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//} catch ( e ) {
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// this.env.dp( 'ERROR: #time ' + e );
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try {
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res = [ new Date().format ( tpl ) ];
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} catch ( e2 ) {
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this.env.dp( 'ERROR: #time ' + e2 );
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res = [ new Date().toString() ];
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}
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return res;
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};
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// Simulates PHP's date function
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// FIXME: don't patch Date.prototype!
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Date.prototype.format = function(format) {
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var returnStr = '';
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var replace = Date.replaceChars;
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for (var i = 0; i < format.length; i++) {
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var curChar = format.charAt(i);
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if (i - 1 >= 0 && format.charAt(i - 1) == "\\") {
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returnStr += curChar;
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}
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else if (replace[curChar]) {
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returnStr += replace[curChar].call(this);
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} else if (curChar != "\\"){
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returnStr += curChar;
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}
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}
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return returnStr;
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};
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// XXX: support localization
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Date.replaceChars = {
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shortMonths: ['Jan', 'Feb', 'Mar', 'Apr', 'May', 'Jun', 'Jul', 'Aug',
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'Sep', 'Oct', 'Nov', 'Dec'],
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longMonths: ['January', 'February', 'March', 'April', 'May', 'June',
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'July', 'August', 'September', 'October', 'November', 'December'],
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shortDays: ['Sun', 'Mon', 'Tue', 'Wed', 'Thu', 'Fri', 'Sat'],
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longDays: ['Sunday', 'Monday', 'Tuesday', 'Wednesday', 'Thursday',
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'Friday', 'Saturday'],
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// Day
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d: function() { return (this.getDate() < 10 ? '0' : '') + this.getDate(); },
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D: function() { return Date.replaceChars.shortDays[this.getDay()]; },
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j: function() { return this.getDate(); },
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l: function() { return Date.replaceChars.longDays[this.getDay()]; },
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N: function() { return this.getDay() + 1; },
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S: function() {
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return (this.getDate() % 10 == 1 &&
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this.getDate() != 11 ? 'st' : (this.getDate() % 10 == 2 &&
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this.getDate() != 12 ? 'nd' : (this.getDate() % 10 == 3 &&
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this.getDate() != 13 ? 'rd' : 'th')));
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},
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w: function() { return this.getDay(); },
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z: function() {
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var d = new Date(this.getFullYear(),0,1);
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return Math.ceil((this - d) / 86400000);
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},
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// Week
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W: function() {
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var d = new Date(this.getFullYear(), 0, 1);
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return Math.ceil((((this - d) / 86400000) + d.getDay() + 1) / 7);
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},
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// Month
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F: function() { return Date.replaceChars.longMonths[this.getMonth()]; },
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m: function() { return (this.getMonth() < 9 ? '0' : '') + (this.getMonth() + 1); },
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M: function() { return Date.replaceChars.shortMonths[this.getMonth()]; },
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n: function() { return this.getMonth() + 1; },
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t: function() {
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var d = new Date();
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return new Date(d.getFullYear(), d.getMonth(), 0).getDate();
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},
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// Year
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L: function() {
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var year = this.getFullYear();
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return (year % 400 === 0 || (year % 100 !== 0 && year % 4 === 0));
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},
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o: function() {
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var d = new Date(this.valueOf());
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d.setDate(d.getDate() - ((this.getDay() + 6) % 7) + 3);
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return d.getFullYear();
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},
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Y: function() { return this.getFullYear(); },
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y: function() { return ('' + this.getFullYear()).substr(2); },
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// Time
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a: function() { return this.getHours() < 12 ? 'am' : 'pm'; },
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A: function() { return this.getHours() < 12 ? 'AM' : 'PM'; },
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B: function() {
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return Math.floor((((this.getUTCHours() + 1) % 24) +
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this.getUTCMinutes() / 60 +
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this.getUTCSeconds() / 3600) * 1000 / 24);
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},
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g: function() { return this.getHours() % 12 || 12; },
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G: function() { return this.getHours(); },
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h: function() {
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return ((this.getHours() % 12 || 12) < 10 ? '0' : '') +
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(this.getHours() % 12 || 12);
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},
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H: function() { return (this.getHours() < 10 ? '0' : '') + this.getHours(); },
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i: function() { return (this.getMinutes() < 10 ? '0' : '') + this.getMinutes(); },
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s: function() { return (this.getSeconds() < 10 ? '0' : '') + this.getSeconds(); },
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u: function() {
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var m = this.getMilliseconds();
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return (m < 10 ? '00' : (m < 100 ? '0' : '')) + m;
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},
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// Timezone
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e: function() { return "Not Yet Supported"; },
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I: function() { return "Not Yet Supported"; },
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O: function() {
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return (-this.getTimezoneOffset() < 0 ? '-' : '+') +
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(Math.abs(this.getTimezoneOffset() / 60) < 10 ? '0' : '') +
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(Math.abs(this.getTimezoneOffset() / 60)) + '00';
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},
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P: function() {
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return (-this.getTimezoneOffset() < 0 ? '-' : '+') +
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(Math.abs(this.getTimezoneOffset() / 60) < 10 ? '0' : '') +
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(Math.abs(this.getTimezoneOffset() / 60)) + ':00';
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},
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T: function() {
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var m = this.getMonth();
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this.setMonth(0);
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var result = this.toTimeString().replace(/^.+ \(?([^\)]+)\)?$/, '$1');
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this.setMonth(m);
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return result;
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},
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Z: function() { return -this.getTimezoneOffset() * 60; },
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// Full Date/Time
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c: function() { return this.format("Y-m-d\\TH:i:sP"); },
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r: function() { return this.toString(); },
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U: function() { return this.getTime() / 1000; }
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};
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ParserFunctions.prototype.pf_localurl = function ( token, frame, cb, args ) {
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var target = args[0].k;
|
|
args = args.slice(1);
|
|
cb( { tokens: (
|
|
'/' +
|
|
// FIXME! Figure out correct prefix to use
|
|
//this.env.wgScriptPath +
|
|
'index' +
|
|
this.env.wgScriptExtension + '?title=' +
|
|
this.env.normalizeTitle( target ) + '&' +
|
|
args.map(
|
|
function( kv ) {
|
|
//console.warn( JSON.stringify( kv ) );
|
|
return (kv.v !== '' && kv.k + '=' + kv.v ) || kv.k;
|
|
}
|
|
).join('&')
|
|
) } );
|
|
};
|
|
|
|
|
|
/**
|
|
* Stub section: Pick any of these and actually implement them!
|
|
*/
|
|
|
|
// The page name and similar information should be carried around in
|
|
// this.env
|
|
ParserFunctions.prototype.pf_formatnum = function ( token, frame, cb, args ) {
|
|
var target = args[0].k;
|
|
cb( { tokens: [ target ] } );
|
|
};
|
|
ParserFunctions.prototype.pf_currentpage = function ( token, frame, cb, args ) {
|
|
var target = args[0].k;
|
|
cb( { tokens: [ target ] } );
|
|
};
|
|
ParserFunctions.prototype.pf_pagenamee = function ( token, frame, cb, args ) {
|
|
var target = args[0].k;
|
|
cb( { tokens: [ target.split(':', 2)[1] || '' ] } );
|
|
};
|
|
ParserFunctions.prototype.pf_fullpagename = function ( token, frame, cb, args ) {
|
|
var target = args[0].k;
|
|
cb( { tokens: target && [target] || ["http://example.com/fixme/"] } );
|
|
};
|
|
ParserFunctions.prototype.pf_fullpagenamee = function ( token, frame, cb, args ) {
|
|
var target = args[0].k;
|
|
cb( { tokens: target && [target] || ["http://example.com/fixme/"] } );
|
|
};
|
|
// This should be doable with the information in the envirionment
|
|
// (this.env) already.
|
|
ParserFunctions.prototype.pf_fullurl = function ( token, frame, cb, args ) {
|
|
var target = args[0].k;
|
|
cb( { tokens: target && [target] || ["http://example.com/fixme/"] } );
|
|
};
|
|
ParserFunctions.prototype.pf_urlencode = function ( token, frame, cb, args ) {
|
|
var target = args[0].k;
|
|
this.env.tp( 'urlencode: ' + target );
|
|
cb( { tokens: [encodeURIComponent(target.trim())] } );
|
|
};
|
|
|
|
// The following items all depends on information from the Wiki, so are hard
|
|
// to implement independently. Some might require using action=parse in the
|
|
// API to get the value. See
|
|
// http://www.mediawiki.org/wiki/Parsoid#Token_stream_transforms,
|
|
// http://etherpad.wikimedia.org/ParserNotesExtensions and
|
|
// http://www.mediawiki.org/wiki/Wikitext_parser/Environment.
|
|
// There might be better solutions for some of these.
|
|
ParserFunctions.prototype['pf_#ifexist'] = function ( token, frame, cb, args ) {
|
|
cb( { tokens: ( args[1] && args[1].v ) || [] } );
|
|
};
|
|
ParserFunctions.prototype.pf_pagesize = function ( token, frame, cb, args ) {
|
|
cb( { tokens: [ '100' ] } );
|
|
};
|
|
ParserFunctions.prototype.pf_sitename = function ( token, frame, cb, args ) {
|
|
cb( { tokens: [ "MediaWiki" ] } );
|
|
};
|
|
ParserFunctions.prototype.pf_anchorencode = function ( token, frame, cb, args ) {
|
|
var target = args[0].k;
|
|
cb( { tokens: [ target.trim() ] } );
|
|
};
|
|
ParserFunctions.prototype.pf_protectionlevel = function ( token, frame, cb, args ) {
|
|
cb( { tokens: [''] } );
|
|
};
|
|
ParserFunctions.prototype.pf_ns = function ( token, frame, cb, args ) {
|
|
var target = args[0].k;
|
|
cb( { tokens: [target] } );
|
|
};
|
|
ParserFunctions.prototype.pf_subjectspace = function ( token, frame, cb, args ) {
|
|
cb( { tokens: ['Main'] } );
|
|
};
|
|
ParserFunctions.prototype.pf_talkspace = function ( token, frame, cb, args ) {
|
|
cb( { tokens: ['Talk'] } );
|
|
};
|
|
ParserFunctions.prototype.pf_numberofarticles = function ( token, frame, cb, args ) {
|
|
cb( { tokens: ["1"] } );
|
|
};
|
|
ParserFunctions.prototype['pf_#language'] = function ( token, frame, cb, args ) {
|
|
var target = args[0].k;
|
|
cb( { tokens: [target] } );
|
|
};
|
|
ParserFunctions.prototype.pf_contentlang = function ( token, frame, cb, args ) {
|
|
cb( { tokens: ['en'] } );
|
|
};
|
|
ParserFunctions.prototype.pf_numberoffiles = function ( token, frame, cb, args ) {
|
|
cb( { tokens: ['2'] } );
|
|
};
|
|
ParserFunctions.prototype.pf_namespace = function ( token, frame, cb, args ) {
|
|
var target = args[0].k;
|
|
cb( { tokens: [target.split(':').pop() || 'Main'] } );
|
|
};
|
|
ParserFunctions.prototype.pf_namespacee = function ( token, frame, cb, args ) {
|
|
var target = args[0].k;
|
|
cb( { tokens: [target.split(':').pop() || 'Main'] } );
|
|
};
|
|
ParserFunctions.prototype.pf_pagename = function ( token, frame, cb, args ) {
|
|
cb( { tokens: [this.env.pageName] } );
|
|
};
|
|
ParserFunctions.prototype.pf_pagenamebase = function ( token, frame, cb, args ) {
|
|
cb( { tokens: [this.env.pageName] } );
|
|
};
|
|
ParserFunctions.prototype.pf_scriptpath = function ( token, frame, cb, args ) {
|
|
cb( { tokens: [this.env.wgScriptPath] } );
|
|
};
|
|
|
|
|
|
if (typeof module == "object") {
|
|
module.exports.ParserFunctions = ParserFunctions;
|
|
}
|