--- loncom/homework/lonhomework.pm 2001/08/06 18:24:37 1.51
+++ loncom/homework/lonhomework.pm 2001/12/07 23:57:52 1.66
@@ -1,17 +1,33 @@
-# The LON-CAPA homework handler
-#
-# Handles homework.
+# The LearningOnline Network with CAPA
+# The LON-CAPA Homework handler
#
-# 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
+# $Id: lonhomework.pm,v 1.66 2001/12/07 23:57:52 albertel Exp $
+#
+# Copyright Michigan State University Board of Trustees
+#
+# This file is part of the LearningOnline Network with CAPA (LON-CAPA).
+#
+# LON-CAPA is free software; you can redistribute it and/or modify
+# it under the terms of the GNU General Public License as published by
+# the Free Software Foundation; either version 2 of the License, or
+# (at your option) any later version.
+#
+# LON-CAPA is distributed in the hope that it will be useful,
+# but WITHOUT ANY WARRANTY; without even the implied warranty of
+# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+# GNU General Public License for more details.
+#
+# You should have received a copy of the GNU General Public License
+# along with LON-CAPA; if not, write to the Free Software
+# Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
+#
+# /home/httpd/html/adm/gpl.txt
+#
+# http://www.lon-capa.org/
+#
+# 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
+# 6/1,8/17,8/18 Gerd Kortemeyer
package Apache::lonhomework;
use strict;
@@ -20,327 +36,357 @@ use Apache::lonxml;
use Apache::lonnet;
use Apache::inputtags;
use Apache::structuretags;
+use Apache::randomlabel;
use Apache::response;
use Apache::hint;
use Apache::outputtags;
use Apache::Constants qw(:common);
#use Time::HiRes qw( gettimeofday tv_interval );
-# ======================================================================= 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');
+ if ( $ENV{'request.state'} eq "published") {
+ if ( defined($ENV{'form.grade_target'})
+ && ($Apache::lonhomework::viewgrades == 'F' )) {
+ return ($ENV{'form.grade_target'});
+ }
+ 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'}) &&
+ (!defined($ENV{'form.resetdata'})) ) {
+ return ('grade', 'web','answer');
} else {
- return ('web');
+ return ('web','answer');
}
- } elsif ($ENV{'request.state'} eq "construct") {
- if ( defined $ENV{'form.preview'}) {
- 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 {
- if ( $ENV{'form.problemmode'} eq 'View' ) {
- if ( defined $ENV{'form.submitted'}) {
- return ('grade','web');
- } else {
- return ('web');
- }
- } elsif ( $ENV{'form.problemmode'} eq 'Edit' ) {
- if ( $ENV{'form.submitted'} eq 'edit' ) {
- return ('modified','edit');
- } else {
- return ('edit');
- }
- } else {
- return ('web');
- }
+ return ('edit');
}
+ } else {
+ return ('web');
+ }
}
- return ();
+ }
+ return ();
}
-# ===================================== Set up variables (return scalar string)
sub setup_vars {
- my ($target) = @_;
- return ';'
+ my ($target) = @_;
+ return ';'
# return ';$external::target='.$target.';';
}
-# ================================================================= Send header
sub send_header {
- my ($request) = @_;
- $request->print(&Apache::lontexconvert::header());
+ my ($request)= @_;
+ $request->print(&Apache::lontexconvert::header());
# $request->print('');
- $request->print(&Apache::lontexconvert::footer());
+ $request->print(&Apache::lontexconvert::footer());
}
-$Apache::lonxml::browse = '';
+$Apache::lonxml::browse='';
-# =============================================== Check date (returns an array)
-sub check_date {
- my ($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';
- $datemsg = 'is in under construction';
+sub check_access {
+ my ($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 $date;
}
- return ($status,$datemsg);
+ if (!$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) { $status = 'CANNOT_ANSWER'; }
+ }
+
+ if (($status ne 'CLOSED') && ($Apache::lonhomework::type eq 'exam') &&
+ (!$Apache::lonhomework::history{"resource.0.outtoken"})) {
+ return ('UNCHECKEDOUT','needs to be checked out');
+ }
+
+
+ &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 '';
+ 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 '';
+ $Apache::lonhomework::browse= &Apache::lonnet::allowed('bre',$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 '';
+ my $request=$_[0];
+ if ($ENV{'browser.mathml'}) {
+ $request->content_type('text/xml');
+ } else {
+ $request->content_type('text/html');
+ }
+ if (!$Apache::lonxml::debug) { &Apache::loncommon::no_cache($request); }
+ $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 $fileout
");
- }
+ my ($request,$problem,$result) = @_;
+ my $fileout = &Apache::lonnet::filelocation("",$request->uri);
+ my $filesave=$fileout.".bak";
+ my $error=0;
+
+ if ($ENV{'form.Undo'} eq 'undo') {
+ if (copy($filesave,$fileout)) {
+ $request->print("Undid changes, Copied $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");
- }
+ $request->print("Unable to undo, unable to copy $filesave to $fileout
");
+ $error=1;
}
+ } else {
+ my $fs=Apache::File->new(">$filesave");
+ if (defined($fs)) {
+ print $fs $$problem;
+ $request->print("Making Backup to $filesave
");
+ } else {
+ $request->print("Unable to make backup $filesave");
+ $error=2;
+ }
+ my $fh=Apache::File->new(">$fileout");
+ if (defined($fh)) {
+ print $fh $$result;
+ $request->print("Saving Modifications to $fileout
");
+ } else {
+ $request->print("Unable to write to $fileout");
+ $error|=4;
+ }
+ }
+ return $error;
+}
+
+sub editxmlmode {
+ my ($request,$file) = @_;
+ my $result;
+ my $problem=&Apache::lonnet::getfile($file);
+ if ($problem == -1) {
+ &Apache::lonxml::error(" Unable to find $file");
+ $problem='';
+ }
+ if (defined($ENV{'form.editxmltext'}) || defined($ENV{'form.Undo'})) {
+ my $error=&handle_save_or_undo($request,\$problem,
+ \$ENV{'form.editxmltext'});
+ if (!$error) { $problem=&Apache::lonnet::getfile($file); }
+ }
+ my ($rows,$cols) = &Apache::edit::textarea_sizes(\$problem);
+ if ($cols > 80) { $cols = 80; }
+ $result.='
+ ';
+ $request->print($result);
+ return '';
}
-# ================================================================= 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($request,\$problem,\$result);
+ my ($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 $result = '';
+ &Apache::inputtags::initialize_inputtags;
+ &Apache::edit::initialize_edit;
+ if ($target eq 'web') {
+ if (&Apache::lonnet::symbread() eq '') {
+ if ($ENV{'request.state'} eq "construct") {
} else {
- #my $td=&tv_interval($t0);
- #if ( $Apache::lonxml::debug) {
- #$result =~ s: ::;
- #$result.="