--- loncom/xml/lonxml.pm	2001/05/26 15:31:33	1.78
+++ loncom/xml/lonxml.pm	2001/05/30 15:27:13	1.81
@@ -8,6 +8,7 @@
 # 3/29,5/4 Gerd Kortemeyer
 # 5/10 Scott Harrison
 # 5/26 Gerd Kortemeyer
+# 5/27 H. K. Ng
 
 package Apache::lonxml; 
 use vars 
@@ -16,6 +17,7 @@ use strict;
 use HTML::TokeParser;
 use Safe;
 use Safe::Hole;
+use Math::Cephes qw(:trigs :hypers :bessels erf erfc);
 use Opcode;
 
 sub register {
@@ -35,6 +37,9 @@ use Apache::run;
 use Apache::londefdef;
 use Apache::scripttag;
 use Apache::edit;
+use Apache::lonnet;
+use Apache::File;
+
 #==================================================   Main subroutine: xmlparse  
 #debugging control, to turn on debugging modify the correct handler
 $Apache::lonxml::debug=0;
@@ -172,6 +177,27 @@ sub xmlparse {
  $safeeval->permit("sort");
  $safeeval->deny(":base_io");
  $safehole->wrap(\&Apache::lonnet::EXT,$safeeval,'&EXT');
+
+ $safehole->wrap(\&Math::Cephes::asin,$safeeval,'&asin');
+ $safehole->wrap(\&Math::Cephes::acos,$safeeval,'&acos');
+ $safehole->wrap(\&Math::Cephes::atan,$safeeval,'&atan');
+ $safehole->wrap(\&Math::Cephes::sinh,$safeeval,'&sinh');
+ $safehole->wrap(\&Math::Cephes::cosh,$safeeval,'&cosh');
+ $safehole->wrap(\&Math::Cephes::tanh,$safeeval,'&tanh');
+ $safehole->wrap(\&Math::Cephes::asinh,$safeeval,'&asinh');
+ $safehole->wrap(\&Math::Cephes::acosh,$safeeval,'&acosh');
+ $safehole->wrap(\&Math::Cephes::atanh,$safeeval,'&atanh');
+ $safehole->wrap(\&Math::Cephes::erf,$safeeval,'&erf');
+ $safehole->wrap(\&Math::Cephes::erfc,$safeeval,'&erfc');
+ $safehole->wrap(\&Math::Cephes::j0,$safeeval,'&j0');
+ $safehole->wrap(\&Math::Cephes::j1,$safeeval,'&j1');
+ $safehole->wrap(\&Math::Cephes::jn,$safeeval,'&jn');
+ $safehole->wrap(\&Math::Cephes::jv,$safeeval,'&jv');
+ $safehole->wrap(\&Math::Cephes::y0,$safeeval,'&y0');
+ $safehole->wrap(\&Math::Cephes::y1,$safeeval,'&y1');
+ $safehole->wrap(\&Math::Cephes::yn,$safeeval,'&yn');
+ $safehole->wrap(\&Math::Cephes::yv,$safeeval,'&yv');
+
 #need to inspect this class of ops
 # $safeeval->deny(":base_orig");
  $safeinit .= ';$external::target='.$target.';';
@@ -571,6 +597,14 @@ ENDSCRIPT
     return $result;
 }
 
+sub storefile {
+    my ($file,$contents)=@_;
+    if (my $fh=Apache::File->new('>'.$file)) {
+	print $fh $contents;
+        $fh->close();
+    }
+}
+
 sub inserteditinfo {
       my ($result,$filecontents)=@_;
       unless ($filecontents) {
@@ -621,16 +655,16 @@ sub handler {
   
   return OK if $request->header_only;
 
+
+  my $file=&Apache::lonnet::filelocation("",$request->uri);
 #
 # Edit action? Save file.
 #
   unless ($ENV{'request.state'} eq 'published') {
       if ($ENV{'form.savethisfile'}) {
-
+	  &storefile($file,$ENV{'form.filecont'});
       }
   }
-
-  my $file=&Apache::lonnet::filelocation("",$request->uri);
   my %mystyle;
   my $result = ''; 
   my $filecontents=&Apache::lonnet::getfile($file);