--- loncom/xml/lonxml.pm 2001/05/15 20:50:03 1.76
+++ loncom/xml/lonxml.pm 2001/06/02 03:59:59 1.84
@@ -7,6 +7,8 @@
# 2/21,3/13 Guy
# 3/29,5/4 Gerd Kortemeyer
# 5/10 Scott Harrison
+# 5/26 Gerd Kortemeyer
+# 5/27 H. K. Ng
package Apache::lonxml;
use vars
@@ -15,6 +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 {
@@ -34,6 +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;
@@ -166,15 +172,7 @@ sub xmlparse {
my $safeeval = new Safe;
my $safehole = new Safe::Hole;
- $safeeval->permit("entereval");
- $safeeval->permit(":base_math");
- $safeeval->deny(":base_io");
- $safehole->wrap(\&Apache::lonnet::EXT,$safeeval,'&EXT');
-#need to inspect this class of ops
-# $safeeval->deny(":base_orig");
- $safeinit .= ';$external::target='.$target.';';
- $safeinit .= ';$external::randomseed='.&Apache::lonnet::rndseed().';';
- &Apache::run::run($safeinit,$safeeval);
+ &init_safespace($target,$safeeval,$safehole,$safeinit);
#-------------------- Redefinition of the target in the case of compound target
($target, my @tenta) = split('&&',$target);
@@ -205,8 +203,8 @@ sub xmlparse {
$safeeval,\%style_for_target,@parstack);
}
} else {
- $result = &callsub("start_$token->[1]", $target, $token,\@parstack,
- \@pars, $safeeval, \%style_for_target);
+ $result = &callsub("start_$token->[1]", $target, $token, \@stack,
+ \@parstack, \@pars, $safeeval, \%style_for_target);
}
} elsif ($token->[0] eq 'E') {
#clear out any tags that didn't end
@@ -227,8 +225,8 @@ sub xmlparse {
}
} else {
- $result = &callsub("end_$token->[1]", $target, $token, \@parstack,
- \@pars,$safeeval, \%style_for_target);
+ $result = &callsub("end_$token->[1]", $target, $token, \@stack,
+ \@parstack, \@pars,$safeeval, \%style_for_target);
}
} else {
&Apache::lonxml::error("Unknown token event :$token->[0]:$token->[1]:");
@@ -289,9 +287,9 @@ sub recurse {
push (@innerstack,$tokenpat->[1]);
push (@innerparstack,&parstring($tokenpat));
&increasedepth($tokenpat);
- $partstring = &callsub("start_$tokenpat->[1]",
- $target, $tokenpat, \@innerparstack,
- \@pat, $safeeval, $style_for_target);
+ $partstring = &callsub("start_$tokenpat->[1]", $target, $tokenpat,
+ \@innerstack, \@innerparstack, \@pat,
+ $safeeval, $style_for_target);
} elsif ($tokenpat->[0] eq 'E') {
#clear out any tags that didn't end
while ($tokenpat->[1] ne $innerstack[$#innerstack]
@@ -299,9 +297,9 @@ sub recurse {
&Apache::lonxml::warning("Unbalanced tags in resource $innerstack['-1']");
pop @innerstack;pop @innerparstack;&decreasedepth($tokenpat);
}
- $partstring = &callsub("end_$tokenpat->[1]",
- $target, $tokenpat, \@innerparstack,
- \@pat, $safeeval, $style_for_target);
+ $partstring = &callsub("end_$tokenpat->[1]", $target, $tokenpat,
+ \@innerstack, \@innerparstack, \@pat,
+ $safeeval, $style_for_target);
} else {
&Apache::lonxml::error("Unknown token event :$tokenpat->[0]:$tokenpat->[1]:");
}
@@ -334,14 +332,15 @@ sub recurse {
}
sub callsub {
- my ($sub,$target,$token,$parstack,$parser,$safeeval,$style)=@_;
+ my ($sub,$target,$token,$tagstack,$parstack,$parser,$safeeval,$style)=@_;
my $currentstring='';
my $nodefault;
{
my $sub1;
no strict 'refs';
if ($target eq 'edit' && $token->[0] eq 'S') {
- $currentstring = &Apache::edit::tag_start($target,$token,$parstack,$parser,
+ $currentstring = &Apache::edit::tag_start($target,$token,$tagstack,
+ $parstack,$parser,
$safeeval,$style);
}
my $tag=$token->[1];
@@ -355,8 +354,9 @@ sub callsub {
#&Apache::lonxml::debug("Calling sub $sub in $space $metamode<br />\n");
$sub1="$space\:\:$sub";
$Apache::lonxml::curdepth=join('_',@Apache::lonxml::depthcounter);
- ($currentstring,$nodefault) = &$sub1($target,$token,$parstack,$parser,
- $safeeval,$style);
+ ($currentstring,$nodefault) = &$sub1($target,$token,$tagstack,
+ $parstack,$parser,$safeeval,
+ $style);
} else {
#&Apache::lonxml::debug("NOT Calling sub $sub in $space $metamode<br />\n");
if ($metamode <1) {
@@ -367,7 +367,7 @@ sub callsub {
}
}
}
- &Apache::lonxml::debug("nodefalt:$nodefault:");
+# &Apache::lonxml::debug("nodefalt:$nodefault:");
if ($currentstring eq '' && $nodefault eq '') {
if ($target eq 'edit') {
&Apache::lonxml::debug("doing default edit for $token->[1]");
@@ -390,6 +390,41 @@ sub callsub {
return $currentstring;
}
+sub init_safespace {
+ my ($target,$safeeval,$safehole,$safeinit) = @_;
+ $safeeval->permit("entereval");
+ $safeeval->permit(":base_math");
+ $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.';';
+ $safeinit .= ';$external::randomseed='.&Apache::lonnet::rndseed().';';
+ &Apache::run::run($safeinit,$safeeval);
+}
+
sub startredirection {
$Apache::lonxml::redirection++;
push (@Apache::lonxml::outputstack, '');
@@ -569,6 +604,47 @@ 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) {
+ $filecontents=(<<SIMPLECONTENT);
+<html>
+<head>
+<title>
+ Title of Document Goes Here
+</title>
+</head>
+<body bgcolor="#FFFFFF">
+
+ Body of Document Goes Here
+
+</body>
+</html>
+SIMPLECONTENT
+ }
+ my $editheader='<a href="#editsection">Edit below</a><hr />';
+ my $editfooter=(<<ENDFOOTER);
+<hr />
+<a name="editsection" />
+<form method="post">
+<textarea cols="80" rows="40" name="filecont">$filecontents</textarea>
+<br />
+<input type="submit" name="savethisfile" value="Save this file" />
+</form>
+ENDFOOTER
+ $result=~s/(\<body[^\>]*\>)/$1$editheader/is;
+ $result=~s/(\<\/body\>)/$editfooter/is;
+ return $result;
+}
+
sub handler {
my $request=shift;
@@ -582,30 +658,46 @@ sub handler {
$request->content_type('text/html');
}
-# $request->print(<<ENDHEADER);
-#<html>
-#<head>
-#<title>Just test</title>
-#</head>
-#<body bgcolor="#FFFFFF">
-#ENDHEADER
-# &Apache::lonhomework::send_header($request);
$request->send_http_header;
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 %mystyle;
my $result = '';
my $filecontents=&Apache::lonnet::getfile($file);
if ($filecontents == -1) {
- &Apache::lonxml::error("<b> Unable to find <i>$file</i></b>");
+ $result=(<<ENDNOTFOUND);
+<html>
+<head>
+<title>File not found</title>
+</head>
+<body bgcolor="#FFFFFF">
+<b>File not found: $file</b>
+</body>
+</html>
+ENDNOTFOUND
$filecontents='';
} else {
$result = &Apache::lonxml::xmlparse($target,$filecontents,'',%mystyle);
}
+#
+# Edit action? Insert editing commands
+#
+ unless ($ENV{'request.state'} eq 'published') {
+ $result=&inserteditinfo($result,$filecontents);
+ }
+
$request->print($result);
writeallows($request->uri);
@@ -646,6 +738,14 @@ sub warning {
}
}
+sub get_param {
+ my ($param,$parstack,$safeeval,$context) = @_;
+ if ( ! $context ) { $context = -1; }
+ my $args ='';
+ if ( $#$parstack > (-2-$context) ) { $args=$$parstack[$context]; }
+ return &Apache::run::run("{$args;".'return $'.$param.'}',$safeeval); #'
+}
+
sub register_insert {
my @data = split /\n/, &Apache::lonnet::getfile('/home/httpd/lonTabs/insertlist.tab');
my $i;