From: Rob Church <robchurch@users.mediawiki.org>
Date: Mon, 26 Jun 2006 15:50:03 +0000 (+0000)
Subject: (bug 672) Add MathAfterTexvc hook
X-Git-Tag: 1.31.0-rc.0~56589
X-Git-Url: http://git.cyclocoop.org/%24action?a=commitdiff_plain;h=048021c14add565a69ed64b5fda5c71b8c119c3d;p=lhc%2Fweb%2Fwiklou.git

(bug 672) Add MathAfterTexvc hook
---

diff --git a/RELEASE-NOTES b/RELEASE-NOTES
index 858f7c0b2c..c3f7266a6f 100644
--- a/RELEASE-NOTES
+++ b/RELEASE-NOTES
@@ -570,6 +570,7 @@ Some default configuration options have changed:
 * Update to Esperanto translation (eo)
 * Check for preg_match() existence when installing and die out whining about PCRE
   if it's not there, instead of throwing a fatal error
+* (bug 672) Add MathAfterTexvc hook
 
 == Compatibility ==
 
diff --git a/docs/hooks.txt b/docs/hooks.txt
index 16db940d03..2e7db307d1 100644
--- a/docs/hooks.txt
+++ b/docs/hooks.txt
@@ -380,6 +380,11 @@ $user: user (object) who marked the edit patrolled
 $wcOnlySysopsCanPatrol: config setting indicating whether the user
  must be a sysop to patrol the edit
 
+'MathAfterTexvc': after texvc is executed when rendering mathematics
+$mathRenderer: instance of MathRenderer
+$errmsg: error message, in HTML (string). Nonempty indicates failure
+ of rendering the formula
+
 'OutputPageBeforeHTML': a page has been processed by the parser and
 the resulting HTML is about to be displayed.  
 $parserOutput: the parserOutput (object) that corresponds to the page 
diff --git a/includes/Math.php b/includes/Math.php
index 1bf68b2bdd..f9d6a605b5 100644
--- a/includes/Math.php
+++ b/includes/Math.php
@@ -73,6 +73,7 @@ class MathRenderer {
 			}
 
 			$retval = substr ($contents, 0, 1);
+			$errmsg = '';
 			if (($retval == 'C') || ($retval == 'M') || ($retval == 'L')) {
 				if ($retval == 'C')
 					$this->conservativeness = 2;
@@ -106,14 +107,23 @@ class MathRenderer {
 			} else {
 				$errbit = htmlspecialchars( substr($contents, 1) );
 				switch( $retval ) {
-					case 'E': return $this->_error( 'math_lexing_error', $errbit );
-					case 'S': return $this->_error( 'math_syntax_error', $errbit );
-					case 'F': return $this->_error( 'math_unknown_function', $errbit );
-					default:  return $this->_error( 'math_unknown_error', $errbit );
+					case 'E': $errmsg = $this->_error( 'math_lexing_error', $errbit );
+					case 'S': $errmsg = $this->_error( 'math_syntax_error', $errbit );
+					case 'F': $errmsg = $this->_error( 'math_unknown_function', $errbit );
+					default:  $errmsg = $this->_error( 'math_unknown_error', $errbit );
 				}
 			}
 
-			$this->hash = substr ($contents, 1, 32);
+			if ( !$errmsg ) {
+				 $this->hash = substr ($contents, 1, 32);
+			}
+
+			$res = wfRunHooks( 'MathAfterTexvc', array( &$this, &$errmsg ) );
+
+			if ( $errmsg ) {
+				 return $errmsg;
+			}
+
 			if (!preg_match("/^[a-f0-9]{32}$/", $this->hash)) {
 				return $this->_error( 'math_unknown_error' );
 			}