--- loncom/homework/lonhomework.pm 2000/07/25 21:27:30 1.2
+++ loncom/homework/lonhomework.pm 2001/08/06 18:24:37 1.51
@@ -1,5 +1,17 @@
-# The LON-CAPA Homework handler
-# Guy Albertelli
+# The LON-CAPA homework handler
+#
+# Handles homework.
+#
+# YEAR=2000
+# 7/25,8/2,8/7,8/8,8/11,9/14,9/19,10/2,10/5,10/11,11/7,11/21 Guy Albertelli
+# 11/30 Gerd Kortemeyer
+# 12/4,12/8,12/12,12/15,12/19,12/21 Guy Albertelli
+# YEAR=2001
+# 1/6,1/8,1/9,1/10,1/11,1/12,1/15,1/25,2/7,2/13,2/19,4/16,4/26 Guy Albertelli
+# 5/4,5/13,5/21 Guy Albertelli
+# 6/1 Gerd Kortemeyer
+# 6/5,6/12,6/26,7/2,7/18 Guy Albertelli
+# 8/6 Scott Harrison
package Apache::lonhomework;
use strict;
@@ -8,48 +20,408 @@ use Apache::lonxml;
use Apache::lonnet;
use Apache::inputtags;
use Apache::structuretags;
+use Apache::response;
+use Apache::hint;
+use Apache::outputtags;
+use Apache::Constants qw(:common);
+#use Time::HiRes qw( gettimeofday tv_interval );
-sub handler {
- my $request=shift;
+# ======================================================================= BEGIN
+sub BEGIN {
+ &Apache::lonxml::register_insert();
+}
+
+# =============================================== Get target (returns an array)
+sub get_target {
+ if ( $ENV{'request.state'} eq "published") {
+ if ( defined $ENV{'form.submitted'}) {
+ return ('grade','web');
+ } else {
+ return ('web');
+ }
+ } elsif ($ENV{'request.state'} eq "construct") {
+ if ( defined $ENV{'form.preview'}) {
+ if ( defined $ENV{'form.submitted'}) {
+ return ('grade','web');
+ } else {
+ return ('web');
+ }
+ } else {
+ if ( $ENV{'form.problemmode'} eq 'View' ) {
+ if ( defined $ENV{'form.submitted'}) {
+ return ('grade','web');
+ } else {
+ return ('web');
+ }
+ } elsif ( $ENV{'form.problemmode'} eq 'Edit' ) {
+ if ( $ENV{'form.submitted'} eq 'edit' ) {
+ return ('modified','edit');
+ } else {
+ return ('edit');
+ }
+ } else {
+ return ('web');
+ }
+ }
+ }
+ return ();
+}
- $request->content_type('text/html');
- $request->send_http_header;
- &Apache::lonhomework::send_header($request);
- my $file = "/home/httpd/html".$request->uri;
- my %mystyle;
- &Apache::inputtags::initialize_inputtags;
- my $result = Apache::lonxml::xmlparse("web",'/home/httpd/html/res/103/albertel/default_homework'.&getfile($file),%mystyle);
- #$request->print("Result follows:");
- $request->print($result);
- #$request->print(":Result ends");
- &Apache::lonhomework::send_footer($request);
+# ===================================== Set up variables (return scalar string)
+sub setup_vars {
+ my ($target) = @_;
+ return ';'
+# return ';$external::target='.$target.';';
}
+# ================================================================= Send header
sub send_header {
- my ($request)= @_;
- $request->print('');
- $request->print('');
- $request->print('');
+ my ($request) = @_;
+# $request->print('');
+ $request->print(&Apache::lontexconvert::footer());
+}
+
+$Apache::lonxml::browse = '';
+
+# =============================================== Check date (returns an array)
+sub check_date {
+ my ($id) = @_;
+ my $date ='';
+ my $status = '';
+ my $datemsg = '';
+ my $lastdate = '';
+ my $temp;
+ my $type;
+ my $passed;
+ &Apache::lonxml::debug("checking for part :$id:");
+ foreach $temp ("opendate","duedate","answerdate") {
+ $lastdate = $date;
+ $date = &Apache::lonnet::EXT("resource.$id.$temp");
+ &Apache::lonxml::debug("found :$date: for :$temp:");
+ if ($date eq '') {
+ $date = "an unknown date"; $passed = 0;
+ } elsif ($date eq 'con_lost') {
+ $date = "an indeterminate date"; $passed = 0;
+ } else {
+ if (time < $date) { $passed = 0; } else { $passed = 1; }
+ $date = localtime $date;
+ }
+ if (!$passed) { $type = $temp; last; }
+ }
+ &Apache::lonxml::debug("have :$type:$passed:");
+ if ($passed) {
+ $status = 'SHOW_ANSWER';
+ $datemsg = $date;
+ } elsif ($type eq 'opendate') {
+ $status = 'CLOSED';
+ $datemsg = "will open on $date";
+ } elsif ($type eq 'duedate') {
+ $status = 'CAN_ANSWER';
+ $datemsg = "is due at $date";
+ } elsif ($type eq 'answerdate') {
+ $status = 'CLOSED';
+ $datemsg = "was due on $lastdate, and answers will be available on ".
+ "$date";
+ }
+ if ($status eq 'CAN_ANSWER') {
+ #check #tries
+ my $tries = $Apache::lonhomework::history{"resource.$id.tries"};
+ my $maxtries = &Apache::lonnet::EXT("resource.$id.maxtries");
+ if ( $tries eq '' ) { $tries = '0'; }
+ if ( $maxtries eq '' ) { $maxtries = '2'; }
+ if ($tries >= $maxtries) { $status = 'CANNOT_ANSWER'; }
+ }
+ &Apache::lonxml::debug("sending back :$status:$datemsg:");
+ if (($Apache::lonhomework::browse eq 'F') && ($status eq 'CLOSED')) {
+ &Apache::lonxml::debug("should be allowed to browse a resource when ".
+ "closed");
+ $status = 'CAN_ANSWER';
+ $datemsg = 'is closed but you are allowed to view it';
+ }
+ if ($ENV{'request.state'} eq "construct") {
+ &Apache::lonxml::debug("in construction ignoring dates");
+ $status = 'CAN_ANSWER';
+ $datemsg = 'is in under construction';
+ }
+ return ($status,$datemsg);
+}
+
+# ================================================================== Shows hash
+sub showhash {
+ my (%hash) = @_;
+ my $resultkey;
+ foreach $resultkey (sort keys %hash) {
+ &Apache::lonxml::debug("$resultkey ---- $hash{$resultkey}");
+ }
+ &Apache::lonxml::debug("\n
restored values^\n");
+ return '';
+}
+
+# =========================================================== Setup permissions
+sub setuppermissions {
+ $Apache::lonhomework::browse = &Apache::lonnet::allowed('bre',
+ $ENV{'request.filename'});
+ $Apache::lonhomework::viewgrades = &Apache::lonnet::allowed('vgr',
+ $ENV{'request.course.id'});
+ return '';
+}
+
+# ================================================================ Setup header
+sub setupheader {
+ my $request = $_[0];
+ if ($ENV{'browser.mathml'}) {
+ $request->content_type('text/xml');
+ } else {
+ $request->content_type('text/html');
+ }
+ $request->send_http_header;
+ return OK if $request->header_only;
+ return '';
+}
+
+# ========================================================= Handle save or undo
+sub handle_save_or_undo {
+ my ($request,$problem,$result) = @_;
+ my $fileout = &Apache::lonnet::filelocation("",$request->uri);
+ my $filesave = $fileout.".bak";
+ if ($ENV{'form.Undo'} eq 'undo') {
+ if (copy($filesave,$fileout)) {
+ $request->print("Undid changes, Copied $filesave to $fileout".
+ "
");
+ } else {
+ $request->print("Unable to ".
+ "undo, unable to copy $filesave to $fileout
");
+ }
+ } else {
+ my $fs=Apache::File->new(">$filesave");
+ if (defined($fs)) {
+ print $fs $$problem;
+ $request->print("Making Backup to $filesave
");
+ } else {
+ $request->print("Unable to ".
+ "make backup $filesave");
+ }
+ my $fh=Apache::File->new(">$fileout");
+ if (defined($fh)) {
+ print $fh $$result;
+ $request->print("Saving Modifications to $fileout
");
+ } else {
+ $request->print("Unable to ".
+ "write to $fileout");
+ }
+ }
}
-sub getfile {
- my ($filename) = @_;
- my $a="";
- &Apache::lonnet::repcopy($filename);
- {
- my $fh=Apache::File->new($filename);
+# ================================================================= Render page
+sub renderpage {
+ my ($request,$file) = @_;
+
+ my (@targets) = &get_target();
+ foreach my $target (@targets) {
+ #my $t0 = [&gettimeofday()];
+ my $problem=&Apache::lonnet::getfile($file);
+ if ($problem == -1) {
+ &Apache::lonxml::error(" Unable to find $file");
+ $problem='';
+ }
+
+ my %mystyle;
+ my $result = '';
+ &Apache::inputtags::initialize_inputtags;
+ &Apache::edit::initialize_edit;
+ %Apache::lonhomework::results=();
+ %Apache::lonhomework::history=&Apache::lonnet::restore();
+ #ignore error conditions
+ my ($temp)=keys %Apache::lonhomework::history ;
+ if ($temp =~ m/^error:.*/) { %Apache::lonhomework::history=(); }
+ if ($target eq 'web') {
+ if (&Apache::lonnet::symbread() eq '') {
+ if ($ENV{'request.state'} eq "construct") {
+ $request->print("In construction space, submissions ".
+ "ignored
");
+ } else {
+ $request->print("Browsing or ".
+ "ambiguous reference, submissions ".
+ "ignored
");
+ }
+ }
+ #if ($Apache::lonhomework::viewgrades eq 'F') {&createmenu('grade',$request); }
+ }
+ if ($target eq 'grade') { &showhash(%Apache::lonhomework::history); }
+
+ my $default=&Apache::lonnet::getfile('/home/httpd/html/res/adm/'.
+ 'includes/default_homework.lcpm');
+ if ($default == -1) {
+ &Apache::lonxml::error("Unable to find default_homework.".
+ "lcpm");
+ $default='';
+ }
+ $result = &Apache::lonxml::xmlparse($target, $problem,
+ $default.&setup_vars($target),
+ %mystyle);
+ #$request->print("Result follows:");
+ if ($target eq 'modified') {
+ &handle_save_or_undo($request,\$problem,\$result);
+ } else {
+ #my $td=&tv_interval($t0);
+ #if ( $Apache::lonxml::debug) {
+ #$result =~ s: ::;
+ #$result.="