sectionvars.php
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	• bzimport
	Nov 21 2014, 8:15 PM

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sectionvars.php
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	<?php
	$wgExtensionCredits['parserhook'][] = array(
	'name' => 'SectionVariables',
	'url' => 'http://meta.wikimedia.org/wiki/SectionVariables',
	'author' => 'Kinsey Moore',
	'description' => 'Enhance parser with ability to grab section headings and numbering.',
	);
	$wgHooks['ParserAfterStrip'][] = 'doSourceSectionVars';
	$wgHooks['InternalParseBeforeLinks'][] = 'doSectionVars';
	function doSourceSectionVars(&$parser, &$text, &$strip_state) {
	global $action; // Access the global "action" variable
	// Only do the replacement if the action is not edit or history
	if(
	$action !== 'edit'
	&& $action !== 'history'
	&& $action !== 'delete'
	&& $action !== 'watch'
	&& strpos( $parser->mTitle->mPrefixedText, 'Special:' ) === false
	&& $parser->mTitle->mNamespace !== 8
	) {
	$text = doSectVars($text,true);
	}
	return true;
	}

	function doSectionVars(&$parser, &$text, &$strip_state) {
	global $action; // Access the global "action" variable
	// Only do the replacement if the action is not edit or history
	if(
	$action !== 'edit'
	&& $action !== 'history'
	&& $action !== 'delete'
	&& $action !== 'watch'
	&& strpos( $parser->mTitle->mPrefixedText, 'Special:' ) === false
	&& $parser->mTitle->mNamespace !== 8
	) {
	$text = doSectVars($text);
	}
	return true;
	}

	function doSectVars( $text, $doSrc = false, $prefix = "") {
	$srctext = "";
	if ($doSrc == true) {
	$srctext = "source";
	}
	# this function should probably take on the functions of formatHeadings
	# split on header openings and on section specifiers
	$blocks = preg_split( "/(^={1,6}.={1,6}\\s$\|\\[\\[section::.?\\]\\]\|<H[1-6].?>.?<\/H[1-6] >)/mi", $text, -1, PREG_SPLIT_DELIM_CAPTURE );
	$outtext = '';
	$hcurrdepth = -1;
	$htext = '';
	$hlengths = array();
	$hlevels = array();
	foreach ($blocks as $block) {
	# take care of header generation
	if (preg_match("/^(={1,6})(.)\\1\\s$/",$block,$matches)) {
	$hdepth = strlen($matches[1]);
	$htext = $matches[2];
	$outtext .= $block;
	$updatestatus = true;
	# no modification takes place here
	} elseif ($doSrc == false && preg_match("/^<H([1-6]).?>(.?)<\/H[1-6] *>$/i",$block,$matches)) {
	$hdepth = $matches[1];
	$htext = $matches[2];
	$outtext .= $block;
	$updatestatus = true;
	# take care of context sensitive variable substitution
	} elseif ($doSrc == false && preg_match("/^\\[\\[section::name\\]\\]$/i",$block,$matches)) {
	$outtext .= $htext;
	} elseif (preg_match("/^\\[\\[section::".$srctext."number\\]\\]$/i",$block,$matches)) {
	$tmp = implode('.',$hlengths);
	if ($tmp == "") {
	$tmp = 0;
	}
	$outtext .= $prefix.$tmp;
	} else {
	$outtext .= $block;
	}

	# update status if necessary
	if ($updatestatus == true) {
	$updatestatus = false;
	# starting a new sublevel
	if ($hcurrdepth == -1 \|\| $hdepth > $hlevels[$hcurrdepth]) {
	$hcurrdepth++;
	$hlevels[$hcurrdepth] = $hdepth;
	$hlengths[$hcurrdepth] = 1;
	# remaining in the current sublevel
	} elseif ($hdepth <= $hlevels[$hcurrdepth] && ($hcurrdepth == 0 \|\| $hdepth > $hlevels[$hcurrdepth-1])) {
	$hlengths[$hcurrdepth]++;
	$hlevels[$hcurrdepth] = $hdepth;
	# jumping up sublevels
	} else {
	# in this case, look for the proper sublevel to jump out to
	for($i = $hcurrdepth-1;$i>=0;$i--) {
	if ($hdepth <= $hlevels[$i] && ($i == 0 \|\| $hdepth > $hlevels[$i-1])) {
	$hcurrdepth = $i;
	break;
	}
	}
	$hlengths[$hcurrdepth]++;
	$hlevels[$hcurrdepth] = $hdepth;
	# truncate sublevels
	$hlengths = array_slice($hlengths,0,$hcurrdepth+1);
	$hlevels = array_slice($hlevels,0,$hcurrdepth+1);
	}
	}
	}
	return $outtext;
	}
	?>

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