User:Paxed/ReplaceCharsBlock
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------- ------- -------
ReplaceCharsBlock extension.
NOTE: Still experimental, DO NOT USE!
Adds a <replacecharsblock> -tag, which allows replacing characters in the block with other characters or strings, per char.
TODO:
- Allow multiple replacement definitions for same char; use the replacements in the order they're defined, looping.
- Maybe also in random order, though that'll invalidate cache.
<replacecharsblock> <replacements> b=foobar </replacements> abc </replacecharsblock>
would show "afoobarc"
- <replacecharsblock> accepts one parameter, newlines. With a value of 1, all newlines will be replaced with <br>. Any other value will be used as is.
- default as a replacement: used for any characters that don't have explicitly defined replacement. $1 in the replacement will be substituted with the character which is being replaced.
For example:
<div class='ttyscreen'> <replacecharsblock newlines="1"> <replacements> k=[[kobold|{{red|k}}]] f=[[cat|{{white|f}}]] @={{white|@}} |={{lightgray||}} default={{lightgray|$1}} </replacements> ------- ------- ------- ------- |...... |...... |...... |kkkkk. |.....| |.....| |.....| |kkkkk| |..k..| |.....| |..f..| |kkfkk| |.kfk.| |..kk.| |.kkk.| |k...k| |.k@k.| |..@fk| |..@..| |kk@kk| |.....| |..kk.| |.....| |kkkkk| -.----- -.----- -.----- -.----- </replacecharsblock> </div>
<replacements> k=k f=f @=@ |=| default=$1 </replacements>
------- ------- -------
|...... |...... |...... |kkkkk. |.....| |.....| |.....| |kkkkk| |..k..| |.....| |..f..| |kkfkk| |.kfk.| |..kk.| |.kkk.| |k...k| |.k@k.| |..@fk| |..@..| |kk@kk| |.....| |..kk.| |.....| |kkkkk| -.----- -.----- -.----- -.-----
Code for ReplaceCharsBlock.php
<?php
/**
* ReplaceCharsBlock -- replace chars in a block with strings.
*
*/
if( !defined( 'MEDIAWIKI' ) ) {
die( "This is not a valid entry point to MediaWiki.\n" );
}
$wgHooks['ParserFirstCallInit'][] = 'wfReplaceCharsBlock';
$wgExtensionCredits['parserhook'][] = array(
'name' => 'ReplaceCharsBlock',
'version' => '0.2devel',
'author' => array(
'[http://nethackwiki.com/wiki/User:Paxed Pasi Kallinen]',
'[http://nethackwiki.com/wiki/User:Ilmari_Karonen Ilmari Karonen]',
),
'url' => 'http://nethackwiki.com/wiki/User:Paxed/ReplaceCharsBlock',
'description' => 'Replace characters in a block of text with strings.',
);
function wfReplaceCharsBlock( &$parser ) {
$parser->setHook( 'replacecharsblock', 'renderCharReplacement' );
return true;
}
function renderCharReplacement( $input, $argv, $parser ) {
/*$parser->disableCache();*/
list( $defs, $text ) = preg_split( '/\n\s*\n/', $input, 2 );
if ( !isset( $text ) ) {
$text = $defs;
$defs = "";
}
$reps = array();
$default = false;
if ( isset( $argv['newlines'] ) ) {
if ( intval( $argv['newlines'] ) == 1 ) {
$reps["\n"] = "<br>";
} else {
$reps["\n"] = $argv['newlines'];
}
}
$defs = explode( "\n", $defs );
foreach ( $defs as $i => $line ) {
if ( !preg_match( '/\S/u', $line ) ) {
continue;
}
if ( !preg_match( '/^(\X|default)=(.+)$/u', $line, $match ) ) {
return "<strong class='error'>Replacecharsblock error on line $i: invalid definition " . htmlspecialchars( $line ) . "</strong>";
}
// wfDebug( __METHOD__ . ": mapping $match[1] to $match[2]\n" );
if ( $match[1] === 'default' ) {
$default = $match[2];
} else {
$reps[ $match[1] ] = $match[2];
}
}
if ( $default !== false ) {
preg_match_all( '/(?>[^\\pM\\pC]\\pM*)/u', $text, $chars );
$chars = array_diff( array_unique( $chars[0] ), array_keys( $reps ) );
foreach ( $chars as $char ) {
$reps[$char] = str_replace( '$1', $char, $default );
// wfDebug( __METHOD__ . ": adding default map from $char to $reps[$char]\n" );
}
}
$text = strtr( $text, $reps );
return $parser->recursiveTagParse( $text );
}