User:Mr. Stradivarius/chessboardfix.js

/* This script fixes duplicate parameters in chess template invocations. To

install it, put the following code in Special:MyPage/skin.js:

importScript('User:Mr. Stradivarius/chessboardfix.js'); // Linkback: User:Mr. Stradivarius/chessboardfix.js

To use the script, open the page you want to fix in edit view, highlight the
chess template invocation that you want to fix, and click the
"Fix chessboards" link in the toolbar (below "what links here").
If the chess template uses the previous standard invocation style, then it
will be converted to the new style. In other words, template invocations like
this:

{{Chess diagram

| tright

8 |rd|nd|bd|qd|kd|bd|nd|rd|=

7 |pd|pd|pd|pd| |pd|pd|pd|=

6 | | | | | | | | |=

5 | | | | |pd| | | |=

4 | | | | |pl|pl| | |=

3 | | | | | | | | |=

2 |pl|pl|pl|pl| | |pl|pl|=

1 |rl|nl|bl|ql|kl|bl|nl|rl|=

a b c d e f g h

| The King's Gambit

}}

Will be transformed into template invocations like this:

{{Chess diagram

| tright

|rd|nd|bd|qd|kd|bd|nd|rd

|pd|pd|pd|pd| |pd|pd|pd

| | | | | | | |

| | | | |pd| | |

| | | | |pl|pl| |

| | | | | | | |

|pl|pl|pl|pl| | |pl|pl

|rl|nl|bl|ql|kl|bl|nl|rl

| The King's Gambit

}}

Please check that the script produces the correct output; there is a chance
that it may mangle the page code, particularly if it is used on unusual types
of chessboard template or on normal wikitext.
/

var myContent = document.getElementsByName( 'wpTextbox1' )[0];

function replaceSelection( replace ) {

// Replace currently selected text with the replace variable. The replace

// variable can be a string or a callback function. The callback function

// takes the selection text as its first and only argument, and must return

// the string to replace the selection with.

var len = myContent.value.length;

var start = myContent.selectionStart;

var end = myContent.selectionEnd;

var sel = myContent.value.substring( start, end );

if ( typeof( replace ) == 'function' ) {

replace = replace( sel );

}

myContent.value = myContent.value.substring( 0, start )

+ replace

+ myContent.value.substring( end, len );

}

function chessboardFix() {

replaceSelection( function ( sel ) {

sel = sel.replace( /\n *\d* *((?:\| *.. *)+)\| *= */g, '\n$1' ); // " 8 |rd| |bd| | |rd| | |=" --> "|rd| |bd| | |rd| | "

sel = sel.replace( /\n *\|= *\n+/g, '\n\n' ); // "|=" --> ""

sel = sel.replace( /\n *(?:[a-zA-Z][a-zA-Z]?\b *)+\n+/g, '\n\n' ); // " a b c d e f g h" --> ""

sel = sel.replace( /\n *[bB]oard *\w+ *\n+/g, '\n' ); // " Board A " --> ""

sel = sel.replace( / *\|= *\n/g, '\n' ); // "{{Chess diagram |=" --> "{{Chess diagram"

return sel;

} );

}

function addChessboardPortletLink() {

var portletLink = mw.util.addPortletLink(

'p-tb',

'#',

'Fix chessboards',

't-chessboardfix'

);

$( portletLink ).click( function ( e ) {

e.preventDefault();

chessboardFix();

});

}

if ( mw.config.get( 'wgNamespaceNumber' ) != -1 && myContent ) {

jQuery( document ).ready( addChessboardPortletLink );

}