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File:  [LON-CAPA] / loncom / interface / Attic / londropadd.pm
Revision 1.2: download - view: text, annotated - select for diffs
Tue Dec 26 21:40:26 2000 UTC (23 years, 4 months ago) by www
Branches: MAIN
CVS tags: HEAD
Now uploads files and is able to separate them

# The LearningOnline Network with CAPA
# Handler to drop and add students in courses 
#
# (Handler to set parameters for assessments
#
# (Handler to resolve ambiguous file locations
#
# (TeX Content Handler
#
# 05/29/00,05/30,10/11 Gerd Kortemeyer)
#
# 10/11,10/12,10/16 Gerd Kortemeyer)
#
# 11/20,11/21,11/22,11/23,11/24,11/25,11/27,11/28,
# 12/08,12/12 Gerd Kortemeyer)
#
# 12/26 Gerd Kortemeyer

package Apache::londropadd;

use strict;
use Apache::lonnet;
use Apache::Constants qw(:common :http REDIRECT);


# ================================================================ Main Handler

sub handler {
   my $r=shift;

   if ($r->header_only) {
      $r->content_type('text/html');
      $r->send_http_header;
      return OK;
   }

# ----------------------------------------------------- Needs to be in a course

   if (($ENV{'request.course.fn'}) && 
       (&Apache::lonnet::allowed('cst',$ENV{'request.course.id'}))) {

# ------------------------------------------------------------------ Start page
      $r->content_type('text/html');
      $r->send_http_header;
      $r->print(<<ENDHEAD);
<html>
<head>
<title>LON-CAPA Student Drop/Add</title>
</head>
<body bgcolor="#FFFFFF">
<img align=right src=/adm/lonIcons/lonlogos.gif>
<h1>Drop/Add Students</h1>
<form method="post" enctype="multipart/form-data"
action="/adm/dropadd" name="studentform">
<h2>Course: $ENV{'course.'.$ENV{'request.course.id'}.'.description'}</h2>
ENDHEAD
# --------------------------------------------------- Phase one, initial screen
    unless ($ENV{'form.phase'}) {
	$r->print(<<ENDUPFORM);
<input type=hidden name=phase value=two>
<hr>
<h3>Upload a courselist</h3>
<input type=file name=upfile size=50>
<br>Type: <select name=upfiletype>
<option value=csv>CSV (comma separated values, spreadsheet)</option>
<option value=space>Space separated</option>
<option value=tab>Tabulator separated</option>
<option value=xml>HTML/XML</option>
</select>
<p><input type=submit name=fileupload value="Upload Courselist">
<hr>
<h3>Enroll a single student</h3>
<p><input type=submit name=enroll value="Enroll Student">
<hr>
<h3>Drop a student</h3>
<p><input type=submit name=drop value="Drop Student">
ENDUPFORM
      }
# ------------------------------------------------------------------- Phase two
      if ($ENV{'form.phase'} eq 'two') {
	  if ($ENV{'form.fileupload'}) {
             my $datatoken=Apache::lonnet::reply(
                'tmpput:'.Apache::lonnet::escape($ENV{'form.upfile'}),
                $r->dir_config('lonHostID'));
             my $separator='';
             my $remove='';
             if ($ENV{'form.upfiletype'} eq 'csv') {
		 $separator='\"\,\s*\"';
                 $remove='"';
             } elsif ($ENV{'form.upfiletype'} eq 'space') {
                 $separator='\s+';
             } elsif ($ENV{'form.upfiletype'} eq 'tab') {
                 $separator='\t+';
             } elsif ($ENV{'form.upfiletype'} eq 'xml') {
             }
             my @lines=split(/\n/,$ENV{'form.upfile'});
             my $total=$#lines+1;
	     $r->print(<<ENDPICK);
<input type=hidden name=phase value=three>
<input type=hidden name=datatoken value="$datatoken">
<input type=hidden name=upfiletype value=$ENV{'form.upfiletype'}>
<hr>
<h3>Identify fields</h3>
Total number of students: $total
<table border=2><tr><th>Field</th><th>Samples</th></tr>
ENDPICK
             my @sone; my @stwo; my @sthree; my $nfields=0;
             if ($#lines>=0) {
		$lines[0]=~s/^$remove//;
                $lines[0]=~s/$remove$//;
                @sone=split(/$separator/,$lines[0]);
                $nfields=$#sone;
                if ($#lines>=1) {
        	   $lines[1]=~s/^$remove//;
                   $lines[1]=~s/$remove$//;
                   @stwo=split(/$separator/,$lines[1]);
                   $nfields=$#stwo;
	        }
                if ($#lines>=2) {
		   $lines[2]=~s/^$remove//;
                   $lines[2]=~s/$remove$//;
                   @sthree=split(/$separator/,$lines[2]);
                   $nfields=$#sthree;
	        }
                my $i;
                for ($i=0;$i<=$nfields;$i++) {
                   $r->print('<tr><td><select name=f'.$i.'>');
                   map {
                      my ($value,$display)=split(/\:/,$_);
                      $r->print('<option value='.$value.'>'.$display.
                              '</option>');
                   } ('none: ','username:Username',
                      'names:Last Name, First Names',
                      'fname:First Name','mname:Middle Names/Initials',
                      'lname:Last Name','gen:Generation',
                      'id:ID/Student Number','sec:Group/Section');
                   $r->print('</select></td><td>');
                   if (defined($sone[$i])) { 
                      $r->print($sone[$i]."</br>\n"); 
                   }
	           if (defined($stwo[$i])) { 
                      $r->print($stwo[$i]."</br>\n"); 
                   }
	           if (defined($sthree[$i])) { 
                      $r->print($sthree[$i]."</br>\n"); 
                   }
                   $r->print('</td></tr>');
	       }
	     }
             $r->print(
              '</table><p><input type=submit value="Submit Field Selection">');
         } elsif ($ENV{'form.enroll'}) {
         } elsif ($ENV{'form.drop'}) {
         }
      }
# ----------------------------------------------------------------- Phase three
      if ($ENV{'form.phase'} eq 'three') {
	  if ($ENV{'form.datatoken'}) {
             my $separator='';
             my $remove='';
             if ($ENV{'form.upfiletype'} eq 'csv') {
		 $separator='\"\,\s*\"';
                 $remove='"';
             } elsif ($ENV{'form.upfiletype'} eq 'space') {
                 $separator='\s+';
             } elsif ($ENV{'form.upfiletype'} eq 'tab') {
                 $separator='\t+';
             } elsif ($ENV{'form.upfiletype'} eq 'xml') {
             }
	      map {
                  my $line=$_;
                  $line=~s/^$remove//;
                  $line=~s/$remove$//;
		  my @entries=split(/$separator/,$line);
                  $r->print($entries[8].'<br>');
              } split(/\n/,
                 &Apache::lonnet::unescape(Apache::lonnet::reply(
                 'tmpget:'.$ENV{'form.datatoken'},$r->dir_config('lonHostID')))
                 );
             
          }
      }
# ------------------------------------------------------------------------- End
      $r->print('</form></body></html>');
   } else {
# ----------------------------- Not in a course, or not allowed to modify parms
      $ENV{'user.error.msg'}=
        "/adm/dropadd:cst:0:0:Cannot drop or add students";
      return HTTP_NOT_ACCEPTABLE; 
   }
   return OK;
}

1;
__END__
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