[LON-CAPA-cvs] cvs: loncom /homework hint.pm

[albertel]

albertel		Fri Nov 19 17:26:37 2004 EDT

  Modified files:              
    /loncom/homework	hint.pm 
  Log:
  -BUG#3575, you can make negative <stringhint> regexp conditions prepended the re with NOT
  i.e. "NOT /right/"
  
  
  
Index: loncom/homework/hint.pm
diff -u loncom/homework/hint.pm:1.56 loncom/homework/hint.pm:1.57
--- loncom/homework/hint.pm:1.56	Tue Aug 24 12:01:18 2004
+++ loncom/homework/hint.pm	Fri Nov 19 17:26:37 2004
@@ -1,7 +1,7 @@
 # The LearningOnline Network with CAPA 
 # implements the tags that control the hints
 #
-# $Id: hint.pm,v 1.56 2004/08/24 16:01:18 albertel Exp $
+# $Id: hint.pm,v 1.57 2004/11/19 22:26:37 albertel Exp $
 #
 # Copyright Michigan State University Board of Trustees
 #
@@ -267,7 +267,14 @@
 	my ($ad,$msg);
 	if ($type eq 're' ) {
 	    ${$safeeval->varglob('LONCAPA::response')}=$response;
-	    $result = &Apache::run::run('return $LONCAPA::response=~m'.$answer,$safeeval);
+	    my $compare='=';
+	    if ($answer=~/^\s*NOT\s*/) {
+		$answer=~s/^\s*NOT\s*//;
+		$compare='!';
+	    }
+	    my $test='$LONCAPA::response'.$compare.'~m'.$answer;
+	    &Apache::lonxml::debug("test $test");
+	    $result = &Apache::run::run("return $test",$safeeval);
 	    &Apache::lonxml::debug("current $response");
 	    &Apache::lonxml::debug("current $answer");
 	    $ad = ($result) ? 'APPROX_ANS' : 'INCORRECT';