loncom/interface/lonpdfupload.pm - view

File: [LON-CAPA] / loncom / interface / lonpdfupload.pm
Revision 1.4: download - view: text, annotated - select for diffs
Fri May 15 17:53:06 2009 UTC (15 years, 2 months ago) by onken
Branches: MAIN
CVS tags: HEAD

- correct localization
- correct web-design with using user addicted CSS entries for pick_boxes
- correct web-design for problem results with data_table
- don't show partnumber for problems with only one part in result table

in the end:
- stundents are able to upload PDF-Forms

1: # The LearningOnline Network with CAPA 2: # Publication Handler 3: # 4: # $Id: lonpdfupload.pm,v 1.4 2009/05/15 17:53:06 onken Exp $ 5: # 6: # Copyright Michigan State University Board of Trustees 7: # 8: # This file is part of the LearningOnline Network with CAPA (LON-CAPA). 9: # 10: # LON-CAPA is free software; you can redistribute it and/or modify 11: # it under the terms of the GNU General Public License as published by 12: # the Free Software Foundation; either version 2 of the License, or 13: # (at your option) any later version. 14: # 15: # LON-CAPA is distributed in the hope that it will be useful, 16: # but WITHOUT ANY WARRANTY; without even the implied warranty of 17: # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 18: # GNU General Public License for more details. 19: # 20: # You should have received a copy of the GNU General Public License 21: # along with LON-CAPA; if not, write to the Free Software 22: # Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA 23: # 24: # /home/httpd/html/adm/gpl.txt 25: # 26: # http://www.lon-capa.org/ 27: # 28: package Apache::lonpdfupload; 29: 30: use lib '/home/httpd/lib/perl'; 31: use Apache::Constants qw(:common :http); 32: use LONCAPA; 33: use LONCAPA::loncgi; 34: use File::Path; 35: use File::Basename; 36: use File::Copy; 37: use IO::File; 38: use Image::Magick; 39: use Apache::lonacc; 40: use Apache::lonxml; 41: use Apache::lonhtmlcommon(); 42: use Apache::lonnet; 43: use Apache::loncommon(); 44: use Apache::lonlocal; 45: use Apache::lonmsg(); 46: use Apache::lonhomework; 47: use LONCAPA::Enrollment; 48: use LONCAPA::Configuration; 49: use CAM::PDF; 50: 51: use strict; 52: 53: sub handler() { 54: my $r = shift; 55: 56: # check user permissions 57: if(!&checkpermission($r)) { 58: # stop processing 59: return OK; 60: } 61: 62: $Apache::lonxml::request=$r; 63: $Apache::lonxml::debug=$env{'user.debug'}; 64: 65: $env{'request.uri'}=$r->uri; 66: $r->content_type('text/html'); 67: $r->send_http_header(); 68: $r->print(&Apache::loncommon::start_page('Upload-PDF-Form')); 69: 70: #load post data into environment 71: &Apache::lonacc::get_posted_cgi($r); 72: 73: # if a file was upload 74: if($env{'form.Uploaded'} && $env{'form.file'}) { 75: $r->print(&processPDF); 76: } else { 77: # print upload form 78: $r->print(&get_javascripts); 79: $r->print(&get_uploadform); 80: } 81: 82: #link to course-content 83: $r->print(" <br />\n <a href='/adm/navmaps'>\n ".&mt("Navigate Contents")."\n </a>\n <br />"); 84: 85: #&dumpenv($r); #debug -> prints the environment 86: $r->print(" </body> \n</html>\n"); 87: return OK; 88: } 89: 90: 91: sub checkpermission() { 92: my $r = shift; 93: if (! &LONCAPA::loncgi::check_cookie_and_load_env()) { 94: my $result = <<END 95: Content-type: text/html 96: 97: <html> 98: <head> 99: <title> 100: Bad Cookie 101: </title> 102: </head> 103: <body> 104: Your cookie information is incorrect. 105: </body> 106: </html> 107: END 108: ; 109: $r->print($result); 110: return 0; 111: } else { 112: return 1; 113: } 114: } 115: 116: 117: sub get_javascripts() { 118: 119: my $message = &mt('Please choose a PDF-File'); 120: 121: # simple test if the upload ends with ".pdf" 122: # it's only for giving a message to the user 123: my $result .= <<END 124: <script type="text/javascript"> 125: function checkFilename(form) { 126: var fileExt = form.file.value; 127: fileExt = fileExt.match(/[.]pdf\$/g); 128: if(fileExt) { 129: return true; 130: } 131: alert("$message"); 132: return false; 133: } 134: </script> 135: END 136: ; 137: return $result; 138: } 139: 140: 141: sub get_uploadform() { 142: 143: #TODO use LON-CAPA routines like pick_box or like that 144: my %lt = &Apache::lonlocal::texthash( 145: 'title'=>'Submit a PDF-Form with problems', 146: 'chFile' => 'Choose file:', 147: 'submit'=>'Submit' 148: ); 149: 150: my $result = <<END 151: <form method="post" enctype="multipart/form-data" onsubmit="return checkFilename(this);"> 152: <input type="hidden" name="type" value="upload" /> 153: <br /> 154: <b>$lt{'title'}</b> 155: <table class="LC_pick_box"> 156: <tbody> 157: <tr class="LC_pick_box_row"> 158: <td class="LC_pick_box_title"> 159: $lt{'chFile'} 160: </td> 161: <td class="LC_pick_box_value LC_odd_row"> 162: <input type="file" name="file" id="filename" /> 163: </td> 164: </tr> 165: </tbody> 166: </table> 167: <br /> 168: <input type="submit" name="Uploaded" value="$lt{'submit'}" /> 169: </form> 170: <br /> 171: <hr /> 172: END 173: ; 174: return $result; 175: } 176: 177: sub processPDF { 178: my $result = (); # message for Browser 179: my @pdfdata = (); # answers from PDF-Forms 180: 181: @pdfdata = &get_pdf_data(); # get answers from PDF-Form 182: 183: if (scalar @pdfdata) { 184: &grade_pdf(@pdfdata); 185: } else { 186: $result .= "<h2>".&mt("Can't find any valid PDF-formfields")."</h2>"; 187: } 188: } 189: 190: sub get_pdf_data() { 191: my @data = (); 192: my $pdf = CAM::PDF->new($env{'form.file'}); 193: 194: my @formFields = $pdf->getFormFieldList(); #get names of formfields 195: 196: foreach my $field (@formFields) { 197: my $dict = $pdf->getFormFieldDict($pdf->getFormField($field)); # get formfield dictonary 198: 199: # 200: # this is nessesary 'cause CAM::PDF has a problem with formfieldnames which include a 201: # dot in fieldnames. So a fieldname like "i.am.aFormfield" will offer three fieldnames "i", "i.am" 202: # and "i.am.aFormfield". The fragmentary names keep no values and will be ignored. 203: if($dict->{'V'}) { 204: push(@data, $field."?". $dict->{'V'}{'value'}); #binding fieldname with value 205: } 206: } 207: return @data; 208: } 209: 210: sub grade_pdf { 211: my $result = (); 212: my @pdfdata = @_; 213: 214: my $meta = (); 215: my %grades = (); 216: my %problems = (); 217: 218: my $debug = (); 219: 220: $debug .= "Found: ". scalar @pdfdata." Entries \n"; 221: $result .= '<br />'; 222: $result .= &Apache::loncommon::start_data_table(); 223: $result .= &Apache::loncommon::start_data_table_header_row(); 224: $result .= &mt('<b>Results of PDF-Form problems</b>'); 225: $result .= &Apache::loncommon::end_data_table_header_row(); 226: 227: foreach my $entry (sort(@pdfdata)) { 228: if ($entry =~ /^meta.*/) { 229: $debug .= 'found: metadata -> '.$entry . "<br />"; 230: my ($label, $value) = ($entry =~ /^([^?]*)\?(.*)/); 231: my ($domain, $user) = split('&', $value); 232: $user =~ s/(.*)\n/$1/; #TODO is that equals to chomp? 233: 234: if($user ne $env{'user.name'} or $domain ne $env{'user.domain'}) { 235: return "<pre>".&mt('Wrong username in PDF-File').": $user $domain -> $env{'user.domain'} $env{'user.name'} </pre>"; 236: } 237: 238: } elsif($entry =~ /^upload.*/) { 239: $debug .= 'found: a problem -> '.$entry; 240: my ($label, $value) = ($entry =~ /^([^?]*)\?(.*)/); 241: my ($symb, $part, $type, $HWVAL) = split('&', $label); 242: my ($map,$id,$resource)=&Apache::lonnet::decode_symb($symb); 243: $value =~ s/(.*)\n/$1/; 244: 245: #fehlerhafte Radiobuttons rausfiltern (Bug in CABAReT Stage) 246: if($type eq 'radiobuttonresponse' && $value eq 'Off' ) { 247: next; 248: } 249: 250: my $submit = $part; 251: $submit =~ s/part_(.*)/submit_$1/; 252: if($problems{$symb.$part}) { 253: $problems{$symb.$part}{$HWVAL} = $value; 254: } else { 255: $problems{$symb.$part} = { 'resource' => $resource, 256: 'symb' => &Apache::lonenc::encrypted($symb), 257: 'submitted' => $part, 258: $submit => 'Answer', 259: $HWVAL => $value}; 260: } 261: } else { 262: $debug .= 'found: -> '.$entry; 263: next; 264: } 265: } 266: #$result .= $debug; 267: 268: foreach my $key (sort (keys %problems)) { 269: my %problem = %{$problems{$key}}; 270: my ($problemname, $grade) = &grade_problem(%problem); 271: 272: $problemname =~ s/(.*)\s*-\sPart\s0/$1/; #cut part when there is only one part in problem 273: 274: $result .= &Apache::loncommon::start_data_table_row(); 275: $result .= "<td>$problemname</td><td class='"; 276: if($grade eq "EXACT_ANS") { 277: $result .= "LC_answer_correct"; 278: } else { 279: $result .= "LC_answer_charged_try"; 280: } 281: $result .= "'>$grade</span></td>"; 282: $result .= &Apache::loncommon::end_data_table_row(); 283: } 284: #$result .= "\n</table>"; 285: $result .= &Apache::loncommon::end_data_table(); 286: 287: 288: return $result; 289: } 290: 291: sub grade_problem { 292: my %problem = @_; 293: 294: my ($content) = &Apache::loncommon::ssi_with_retries('/res/'. 295: $problem{'resource'}, 5, %problem); 296: 297: #TODO ? filter html response can't be the answer 298: # ! find an other way to get a problemname and Part 299: $content =~ s/.*class="LC_current_location".*>(.*)<\/td>.*/$1/g; 300: $content = $1; 301: 302: my $part = $problem{submitted}; 303: $part =~ s/part_(.*)/$1/; 304: $content .= " - Part $part"; 305: 306: my %problemhash = &Apache::lonnet::restore($problem{'symb'}); 307: my $grade = $problemhash{"resource.$part.award"}; 308: 309: return ($content, $grade); 310: } 311: 312: sub dumpenv { 313: my $r = shift; 314: 315: $r->print ("<br />-------------------<br />"); 316: foreach my $key (sort (keys %env)) { 317: $r->print ("<br />$key -> $env{$key}"); 318: } 319: $r->print ("<br />-------------------<br />"); 320: $r->print ("<br />-------------------<br />"); 321: foreach my $key (sort (keys %ENV)) { 322: $r->print ("<br />$key -> $ENV{$key}"); 323: } 324: $r->print ("<br />-------------------<br />"); 325: 326: } 327: 328: 1; 329: __END__ 330: