loncom/xml/lonxml.pm - view

File: [LON-CAPA] / loncom / xml / lonxml.pm
Revision 1.548: download - view: text, annotated - select for diffs
Sat Jun 21 23:36:05 2014 UTC (9 years, 11 months ago) by raeburn
Branches: MAIN
CVS tags: HEAD

- Editing HTML file uploaded to Syllabus:
  WYSIWYG editor set to load automatically in this case, so "Edit Math"
  button needs to be hidden by an onload action.

1: # The LearningOnline Network with CAPA 2: # XML Parser Module 3: # 4: # $Id: lonxml.pm,v 1.548 2014/06/21 23:36:05 raeburn 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: # Copyright for TtHfunc and TtMfunc by Ian Hutchinson. 29: # TtHfunc and TtMfunc (the "Code") may be compiled and linked into 30: # binary executable programs or libraries distributed by the 31: # Michigan State University (the "Licensee"), but any binaries so 32: # distributed are hereby licensed only for use in the context 33: # of a program or computational system for which the Licensee is the 34: # primary author or distributor, and which performs substantial 35: # additional tasks beyond the translation of (La)TeX into HTML. 36: # The C source of the Code may not be distributed by the Licensee 37: # to any other parties under any circumstances. 38: # 39: 40: =pod 41: 42: =head1 NAME 43: 44: Apache::lonxml 45: 46: =head1 SYNOPSIS 47: 48: XML Parsing Module 49: 50: This is part of the LearningOnline Network with CAPA project 51: described at http://www.lon-capa.org. 52: 53: 54: =head1 SUBROUTINES 55: 56: =cut 57: 58: 59: 60: package Apache::lonxml; 61: use vars 62: qw(@pwd @outputstack $redirection $import @extlinks $metamode $evaluate %insertlist @namespace $errorcount $warningcount); 63: use strict; 64: use LONCAPA; 65: use HTML::LCParser(); 66: use HTML::TreeBuilder(); 67: use HTML::Entities(); 68: use Safe(); 69: use Safe::Hole(); 70: use Math::Cephes(); 71: use Math::Random(); 72: use Opcode(); 73: use POSIX qw(strftime); 74: use Time::HiRes qw( gettimeofday tv_interval ); 75: use Symbol(); 76: 77: sub register { 78: my ($space,@taglist) = @_; 79: foreach my $temptag (@taglist) { 80: push(@{ $Apache::lonxml::alltags{$temptag} },$space); 81: } 82: } 83: 84: sub deregister { 85: my ($space,@taglist) = @_; 86: foreach my $temptag (@taglist) { 87: my $tempspace = $Apache::lonxml::alltags{$temptag}[-1]; 88: if ($tempspace eq $space) { 89: pop(@{ $Apache::lonxml::alltags{$temptag} }); 90: } 91: } 92: #&printalltags(); 93: } 94: 95: use Apache::Constants qw(:common); 96: use Apache::lontexconvert(); 97: use Apache::style(); 98: use Apache::run(); 99: use Apache::londefdef(); 100: use Apache::scripttag(); 101: use Apache::languagetags(); 102: use Apache::edit(); 103: use Apache::inputtags(); 104: use Apache::outputtags(); 105: use Apache::lonnet; 106: use Apache::File(); 107: use Apache::loncommon(); 108: use Apache::lonfeedback(); 109: use Apache::lonmsg(); 110: use Apache::loncacc(); 111: use Apache::lonmaxima(); 112: use Apache::lonr(); 113: use Apache::lonlocal; 114: use Apache::lonhtmlcommon(); 115: use Apache::functionplotresponse(); 116: use Apache::lonnavmaps(); 117: 118: #==================================== Main subroutine: xmlparse 119: 120: #debugging control, to turn on debugging modify the correct handler 121: 122: $Apache::lonxml::debug=0; 123: 124: # keeps count of the number of warnings and errors generated in a parse 125: $warningcount=0; 126: $errorcount=0; 127: 128: #path to the directory containing the file currently being processed 129: @pwd=(); 130: 131: #these two are used for capturing a subset of the output for later processing, 132: #don't touch them directly use &startredirection and &endredirection 133: @outputstack = (); 134: $redirection = 0; 135: 136: #controls wheter the <import> tag actually does 137: $import = 1; 138: @extlinks=(); 139: 140: # meta mode is a bit weird only some output is to be turned off 141: #<output> tag turns metamode off (defined in londefdef.pm) 142: $metamode = 0; 143: 144: # turns on and of run::evaluate actually derefencing var refs 145: $evaluate = 1; 146: 147: # data structure for edit mode, determines what tags can go into what other tags 148: %insertlist=(); 149: 150: # stores the list of active tag namespaces 151: @namespace=(); 152: 153: # stores all Scrit Vars displays for later showing 154: my @script_var_displays=(); 155: 156: # a pointer the the Apache request object 157: $Apache::lonxml::request=''; 158: 159: # a problem number counter, and check on ether it is used 160: $Apache::lonxml::counter=1; 161: $Apache::lonxml::counter_changed=0; 162: 163: # Part counter hash. In analysis mode, the 164: # problems can use this to record which parts increment the counter 165: # by how much. The counter subs will maintain this hash via 166: # their optional part parameters. Note that the assumption is that 167: # analysis is done in one request and therefore it is not necessary to 168: # save this information request-to-request. 169: 170: 171: %Apache::lonxml::counters_per_part = (); 172: 173: #internal check on whether to look at style defs 174: $Apache::lonxml::usestyle=1; 175: 176: #locations used to store the parameter string for style substitutions 177: $Apache::lonxml::style_values=''; 178: $Apache::lonxml::style_end_values=''; 179: 180: #array of ssi calls that need to occur after we are done parsing 181: @Apache::lonxml::ssi_info=(); 182: 183: #should we do the postag variable interpolation 184: $Apache::lonxml::post_evaluate=1; 185: 186: #a header message to emit in the case of any generated warning or errors 187: $Apache::lonxml::warnings_error_header=''; 188: 189: # Control whether or not LaTeX symbols should be substituted for their 190: # \ style equivalents...this may be turned off e.g. in an verbatim 191: # environment. 192: 193: $Apache::lonxml::substitute_LaTeX_symbols = 1; # Starts out on. 194: 195: sub enable_LaTeX_substitutions { 196: $Apache::lonxml::substitute_LaTeX_symbols = 1; 197: } 198: sub disable_LaTeX_substitutions { 199: $Apache::lonxml::substitute_LaTeX_symbols = 0; 200: } 201: 202: sub xmlend { 203: my ($target,$parser)=@_; 204: my $mode='xml'; 205: my $status='OPEN'; 206: if ($Apache::lonhomework::parsing_a_problem || 207: $Apache::lonhomework::parsing_a_task ) { 208: $mode='problem'; 209: $status=$Apache::inputtags::status[-1]; 210: } 211: my $discussion; 212: &Apache::loncommon::get_unprocessed_cgi($ENV{'QUERY_STRING'}, 213: ['LONCAPA_INTERNAL_no_discussion']); 214: if ( 215: ( (!exists($env{'form.LONCAPA_INTERNAL_no_discussion'})) 216: || ($env{'form.LONCAPA_INTERNAL_no_discussion'} ne 'true') 217: ) 218: && ($env{'form.inhibitmenu'} ne 'yes') 219: ) { 220: $discussion=&Apache::lonfeedback::list_discussion($mode,$status); 221: } 222: if ($target eq 'tex') { 223: $discussion.='<tex>\keephidden{ENDOFPROBLEM}\vskip 0.5mm\noindent\makebox[\textwidth/$number_of_columns][b]{\hrulefill}\end{document}</tex>'; 224: &Apache::lonxml::newparser($parser,\$discussion,''); 225: return ''; 226: } 227: 228: return $discussion; 229: } 230: 231: sub printalltags { 232: my $temp; 233: foreach $temp (sort keys %Apache::lonxml::alltags) { 234: &Apache::lonxml::debug("$temp -- ". 235: join(',',@{ $Apache::lonxml::alltags{$temp} })); 236: } 237: } 238: 239: sub xmlparse { 240: my ($request,$target,$content_file_string,$safeinit,%style_for_target) = @_; 241: 242: &setup_globals($request,$target); 243: &Apache::inputtags::initialize_inputtags(); 244: &Apache::bridgetask::initialize_bridgetask(); 245: &Apache::outputtags::initialize_outputtags(); 246: &Apache::edit::initialize_edit(); 247: &Apache::londefdef::initialize_londefdef(); 248: 249: # 250: # do we have a course style file? 251: # 252: 253: if ($env{'request.course.id'} && $env{'request.state'} ne 'construct') { 254: my $bodytext= 255: $env{'course.'.$env{'request.course.id'}.'.default_xml_style'}; 256: if ($bodytext) { 257: foreach my $file (split(',',$bodytext)) { 258: my $location=&Apache::lonnet::filelocation('',$file); 259: my $styletext=&Apache::lonnet::getfile($location); 260: if ($styletext ne '-1') { 261: %style_for_target = (%style_for_target, 262: &Apache::style::styleparser($target,$styletext)); 263: } 264: } 265: } 266: } elsif ($env{'construct.style'} 267: && ($env{'request.state'} eq 'construct')) { 268: my $location=&Apache::lonnet::filelocation('',$env{'construct.style'}); 269: my $styletext=&Apache::lonnet::getfile($location); 270: if ($styletext ne '-1') { 271: %style_for_target = (%style_for_target, 272: &Apache::style::styleparser($target,$styletext)); 273: } 274: } 275: #&printalltags(); 276: my @pars = (); 277: my $pwd=$env{'request.filename'}; 278: $pwd =~ s:/[^/]*$::; 279: &newparser(\@pars,\$content_file_string,$pwd); 280: 281: my $safeeval = new Safe; 282: my $safehole = new Safe::Hole; 283: &init_safespace($target,$safeeval,$safehole,$safeinit); 284: #-------------------- Redefinition of the target in the case of compound target 285: 286: ($target, my @tenta) = split('&&',$target); 287: 288: my @stack = (); 289: my @parstack = (); 290: &initdepth(); 291: &init_alarm(); 292: my $finaloutput = &inner_xmlparse($target,\@stack,\@parstack,\@pars, 293: $safeeval,\%style_for_target,1); 294: 295: if (@stack) { 296: &warning(&mt('At end of file some tags were still left unclosed:'). 297: ' <tt><'.join('></tt>, <tt><',reverse(@stack)). 298: '></tt>'); 299: } 300: if ($env{'request.uri'}) { 301: &writeallows($env{'request.uri'}); 302: } 303: &do_registered_ssi(); 304: if ($Apache::lonxml::counter_changed) { &store_counter() } 305: 306: &clean_safespace($safeeval); 307: 308: if (@script_var_displays) { 309: if ($finaloutput =~ m{</body>\s*</html>\s*$}s) { 310: my $scriptoutput = join('',@script_var_displays); 311: $finaloutput=~s{(</body>\s*</html>)\s*$}{$scriptoutput$1}s; 312: } else { 313: $finaloutput .= join('',@script_var_displays); 314: } 315: undef(@script_var_displays); 316: } 317: &init_state(); 318: if ($env{'form.return_only_error_and_warning_counts'}) { 319: if ($env{'request.filename'}=~/\.(html|htm|xml)$/i) { 320: my $error=&verify_html($content_file_string); 321: if ($error) { $errorcount++; } 322: } 323: return "$errorcount:$warningcount"; 324: } 325: return $finaloutput; 326: } 327: 328: sub latex_special_symbols { 329: my ($string,$where)=@_; 330: # 331: # If e.g. in verbatim mode, then don't substitute. 332: # but return original string. 333: # 334: if (!($Apache::lonxml::substitute_LaTeX_symbols)) { 335: return $string; 336: } 337: if ($where eq 'header') { 338: $string =~ s/\\/\$\\backslash\$/g; # \ -> $\backslash$ per LaTex line by line pg 10. 339: $string =~ s/(\$|%|\{|\})/\\$1/g; 340: $string=&Apache::lonprintout::character_chart($string); 341: # any & or # leftover should be safe to just escape 342: $string=~s/([^\\])\&/$1\\\&/g; 343: $string=~s/([^\\])\#/$1\\\#/g; 344: $string =~ s/_/\\_/g; # _ -> \_ 345: $string =~ s/\^/\\\^{}/g; # ^ -> \^{} 346: } else { 347: $string=~s/\\/\\ensuremath{\\backslash}/g; 348: $string=~s/\\\%|\%/\\\%/g; 349: $string=~s/\\{|{/\\{/g; 350: $string=~s/\\}|}/\\}/g; 351: $string=~s/\\ensuremath\\{\\backslash\\}/\\ensuremath{\\backslash}/g; 352: $string=~s/\\\$|\$/\\\$/g; 353: $string=~s/\\\_|\_/\\\_/g; 354: $string=~s/([^\\]|^)(\~|\^)/$1\\$2\\strut /g; 355: $string=~s/(>|<)/\\ensuremath\{$1\}/g; #more or less 356: $string=&Apache::lonprintout::character_chart($string); 357: # any & or # leftover should be safe to just escape 358: $string=~s/\\\&|\&/\\\&/g; 359: $string=~s/\\\#|\#/\\\#/g; 360: $string=~s/\|/\$\\mid\$/g; 361: #single { or } How to escape? 362: } 363: return $string; 364: } 365: 366: sub inner_xmlparse { 367: my ($target,$stack,$parstack,$pars,$safeeval,$style_for_target,$start)=@_; 368: my $finaloutput = ''; 369: my $result; 370: my $token; 371: my $dontpop=0; 372: my $startredirection = $Apache::lonxml::redirection; 373: while ( $#$pars > -1 ) { 374: while ($token = $$pars['-1']->get_token) { 375: if (($token->[0] eq 'T') || ($token->[0] eq 'C') ) { 376: if ($metamode<1) { 377: my $text=$token->[1]; 378: if ($token->[0] eq 'C' && $target eq 'tex') { 379: $text = ''; 380: # $text = '%'.$text."\n"; 381: } 382: $result.=$text; 383: } 384: } elsif (($token->[0] eq 'D')) { 385: if ($metamode<1 && $target eq 'web') { 386: my $text=$token->[1]; 387: $result.=$text; 388: } 389: } elsif ($token->[0] eq 'PI') { 390: if ($metamode<1 && $target eq 'web') { 391: $result=$token->[2]; 392: } 393: } elsif ($token->[0] eq 'S') { 394: # add tag to stack 395: push (@$stack,$token->[1]); 396: # add parameters list to another stack 397: push (@$parstack,&parstring($token)); 398: &increasedepth($token); 399: if ($Apache::lonxml::usestyle && 400: exists($$style_for_target{$token->[1]})) { 401: $Apache::lonxml::usestyle=0; 402: my $string=$$style_for_target{$token->[1]}. 403: '<LONCAPA_INTERNAL_TURN_STYLE_ON />'; 404: &Apache::lonxml::newparser($pars,\$string); 405: $Apache::lonxml::style_values=$$parstack[-1]; 406: $Apache::lonxml::style_end_values=$$parstack[-1]; 407: } else { 408: $result = &callsub("start_$token->[1]", $target, $token, $stack, 409: $parstack, $pars, $safeeval, $style_for_target); 410: } 411: } elsif ($token->[0] eq 'E') { 412: if ($Apache::lonxml::usestyle && 413: exists($$style_for_target{'/'."$token->[1]"})) { 414: $Apache::lonxml::usestyle=0; 415: my $string=$$style_for_target{'/'.$token->[1]}. 416: '<LONCAPA_INTERNAL_TURN_STYLE_ON end="'.$token->[1].'" />'; 417: &Apache::lonxml::newparser($pars,\$string); 418: $Apache::lonxml::style_values=$Apache::lonxml::style_end_values; 419: $Apache::lonxml::style_end_values=''; 420: $dontpop=1; 421: } else { 422: #clear out any tags that didn't end 423: while ($token->[1] ne $$stack['-1'] && ($#$stack > -1)) { 424: my $lasttag=$$stack[-1]; 425: if ($token->[1] =~ /^\Q$lasttag\E$/i) { 426: &Apache::lonxml::warning(&mt('Using tag [_1] on line [_2] as end tag to [_3]','</'.$token->[1].'>','.$token->[3].','<'.$$stack[-1].'>')); 427: last; 428: } else { 429: &Apache::lonxml::warning(&mt('Found tag [_1] on line [_2] when looking for [_3] in file.','</'.$token->[1].'>',$token->[3],'</'.$$stack[-1].'>')); 430: &end_tag($stack,$parstack,$token); 431: } 432: } 433: $result = &callsub("end_$token->[1]", $target, $token, $stack, 434: $parstack, $pars,$safeeval, $style_for_target); 435: } 436: } else { 437: &Apache::lonxml::error("Unknown token event :$token->[0]:$token->[1]:"); 438: } 439: #evaluate variable refs in result 440: if ($Apache::lonxml::post_evaluate &&$result ne "") { 441: my $extras; 442: if (!$Apache::lonxml::usestyle) { 443: $extras=$Apache::lonxml::style_values; 444: } 445: if ( $#$parstack > -1 ) { 446: $result=&Apache::run::evaluate($result,$safeeval,$extras.$$parstack[-1]); 447: } else { 448: $result= &Apache::run::evaluate($result,$safeeval,$extras); 449: } 450: } 451: $Apache::lonxml::post_evaluate=1; 452: 453: if (($token->[0] eq 'T') || ($token->[0] eq 'C') || ($token->[0] eq 'D') ) { 454: #Style file definitions should be correct 455: if ($target eq 'tex' && ($Apache::lonxml::usestyle)) { 456: $result=&latex_special_symbols($result); 457: } 458: } 459: 460: if ($Apache::lonxml::redirection) { 461: $Apache::lonxml::outputstack['-1'] .= $result; 462: } else { 463: $finaloutput.=$result; 464: } 465: $result = ''; 466: 467: if ($token->[0] eq 'E' && !$dontpop) { 468: &end_tag($stack,$parstack,$token); 469: } 470: $dontpop=0; 471: } 472: if ($#$pars > -1) { 473: pop @$pars; 474: pop @Apache::lonxml::pwd; 475: } 476: } 477: 478: # if ($target eq 'meta') { 479: # $finaloutput.=&endredirection; 480: # } 481: 482: if ( $start && $target eq 'grade') { &endredirection(); } 483: if ( $Apache::lonxml::redirection > $startredirection) { 484: while ($Apache::lonxml::redirection > $startredirection) { 485: $finaloutput .= &endredirection(); 486: } 487: } 488: if (($ENV{'QUERY_STRING'}) && ($target eq 'web')) { 489: $finaloutput=&afterburn($finaloutput); 490: } 491: if ($target eq 'modified') { 492: # if modfied, handle startpart and endpart 493: $finaloutput=~s/\<startpartmarker[^\>]*\>(.*)\<endpartmarker[^\>]*\>/<part>$1<\/part>/gs; 494: } 495: return $finaloutput; 496: } 497: 498: ## 499: ## Looks to see if there is a subroutine defined for this tag. If so, call it, 500: ## otherwise do not call it as we do not know what it is. 501: ## 502: sub callsub { 503: my ($sub,$target,$token,$tagstack,$parstack,$parser,$safeeval,$style)=@_; 504: my $currentstring=''; 505: my $nodefault; 506: { 507: my $sub1; 508: no strict 'refs'; 509: my $tag=$token->[1]; 510: # get utterly rid of extended html tags 511: if ($tag=~/^x\-/i) { return ''; } 512: my $space=$Apache::lonxml::alltags{$tag}[-1]; 513: if (!$space) { 514: $tag=~tr/A-Z/a-z/; 515: $sub=~tr/A-Z/a-z/; 516: $space=$Apache::lonxml::alltags{$tag}[-1] 517: } 518: 519: my $deleted=0; 520: if (($token->[0] eq 'S') && ($target eq 'modified')) { 521: $deleted=&Apache::edit::handle_delete($space,$target,$token,$tagstack, 522: $parstack,$parser,$safeeval, 523: $style); 524: } 525: if (!$deleted) { 526: if ($space) { 527: #&Apache::lonxml::debug("Calling sub $sub in $space $metamode"); 528: $sub1="$space\:\:$sub"; 529: ($currentstring,$nodefault) = &$sub1($target,$token,$tagstack, 530: $parstack,$parser,$safeeval, 531: $style); 532: } else { 533: if ($target eq 'tex') { 534: # throw away tag name 535: return ''; 536: } 537: #&Apache::lonxml::debug("NOT Calling sub $sub in $space $metamode"); 538: if ($metamode <1) { 539: if (defined($token->[4]) && ($metamode < 1)) { 540: $currentstring = $token->[4]; 541: } else { 542: $currentstring = $token->[2]; 543: } 544: } 545: } 546: # &Apache::lonxml::debug("nodefalt:$nodefault:"); 547: if ($currentstring eq '' && $nodefault eq '') { 548: if ($target eq 'edit') { 549: #&Apache::lonxml::debug("doing default edit for $token->[1]"); 550: if ($token->[0] eq 'S') { 551: $currentstring = &Apache::edit::tag_start($target,$token); 552: } elsif ($token->[0] eq 'E') { 553: $currentstring = &Apache::edit::tag_end($target,$token); 554: } 555: } 556: } 557: if ($target eq 'modified' && $nodefault eq '') { 558: if ($currentstring eq '') { 559: if ($token->[0] eq 'S') { 560: $currentstring = $token->[4]; 561: } elsif ($token->[0] eq 'E') { 562: $currentstring = $token->[2]; 563: } else { 564: $currentstring = $token->[2]; 565: } 566: } 567: if ($token->[0] eq 'S') { 568: $currentstring.=&Apache::edit::handle_insert(); 569: } elsif ($token->[0] eq 'E') { 570: $currentstring.=&Apache::edit::handle_insertafter($token->[1]); 571: } 572: } 573: } 574: use strict 'refs'; 575: } 576: return $currentstring; 577: } 578: 579: { 580: my %state; 581: 582: sub init_state { 583: undef(%state); 584: } 585: 586: sub set_state { 587: my ($key,$value) = @_; 588: $state{$key} = $value; 589: return $value; 590: } 591: sub get_state { 592: my ($key) = @_; 593: return $state{$key}; 594: } 595: } 596: 597: sub setup_globals { 598: my ($request,$target)=@_; 599: $Apache::lonxml::request=$request; 600: $errorcount=0; 601: $warningcount=0; 602: $Apache::lonxml::internal_error=0; 603: $Apache::lonxml::default_homework_loaded=0; 604: $Apache::lonxml::usestyle=1; 605: &init_counter(); 606: &clear_bubble_lines_for_part(); 607: &init_state(); 608: &set_state('target',$target); 609: @Apache::lonxml::pwd=(); 610: @Apache::lonxml::extlinks=(); 611: @script_var_displays=(); 612: @Apache::lonxml::ssi_info=(); 613: $Apache::lonxml::post_evaluate=1; 614: $Apache::lonxml::warnings_error_header=''; 615: $Apache::lonxml::substitute_LaTeX_symbols = 1; 616: if ($target eq 'meta') { 617: $Apache::lonxml::redirection = 0; 618: $Apache::lonxml::metamode = 1; 619: $Apache::lonxml::evaluate = 1; 620: $Apache::lonxml::import = 0; 621: } elsif ($target eq 'answer') { 622: $Apache::lonxml::redirection = 0; 623: $Apache::lonxml::metamode = 1; 624: $Apache::lonxml::evaluate = 1; 625: $Apache::lonxml::import = 1; 626: } elsif ($target eq 'grade') { 627: &startredirection(); #ended in inner_xmlparse on exit 628: $Apache::lonxml::metamode = 0; 629: $Apache::lonxml::evaluate = 1; 630: $Apache::lonxml::import = 1; 631: } elsif ($target eq 'modified') { 632: $Apache::lonxml::redirection = 0; 633: $Apache::lonxml::metamode = 0; 634: $Apache::lonxml::evaluate = 0; 635: $Apache::lonxml::import = 0; 636: } elsif ($target eq 'edit') { 637: $Apache::lonxml::redirection = 0; 638: $Apache::lonxml::metamode = 0; 639: $Apache::lonxml::evaluate = 0; 640: $Apache::lonxml::import = 0; 641: } elsif ($target eq 'analyze') { 642: $Apache::lonxml::redirection = 0; 643: $Apache::lonxml::metamode = 0; 644: $Apache::lonxml::evaluate = 1; 645: $Apache::lonxml::import = 1; 646: } else { 647: $Apache::lonxml::redirection = 0; 648: $Apache::lonxml::metamode = 0; 649: $Apache::lonxml::evaluate = 1; 650: $Apache::lonxml::import = 1; 651: } 652: } 653: 654: sub init_safespace { 655: my ($target,$safeeval,$safehole,$safeinit) = @_; 656: $safeeval->reval('use LaTeX::Table;'); 657: $safeeval->deny_only(':dangerous'); 658: $safeeval->reval('use LONCAPA::LCMathComplex;'); 659: $safeeval->permit_only(":default"); 660: $safeeval->permit("entereval"); 661: $safeeval->permit(":base_math"); 662: $safeeval->permit("sort"); 663: $safeeval->permit("time"); 664: $safeeval->permit("caller"); 665: $safeeval->deny("rand"); 666: $safeeval->deny("srand"); 667: $safeeval->deny(":base_io"); 668: $safehole->wrap(\&Apache::scripttag::xmlparse,$safeeval,'&xmlparse'); 669: $safehole->wrap(\&Apache::outputtags::multipart,$safeeval,'&multipart'); 670: $safehole->wrap(\&Apache::lonnet::EXT,$safeeval,'&EXT'); 671: $safehole->wrap(\&Apache::chemresponse::chem_standard_order,$safeeval, 672: '&chem_standard_order'); 673: $safehole->wrap(\&Apache::response::check_status,$safeeval,'&check_status'); 674: $safehole->wrap(\&Apache::response::implicit_multiplication,$safeeval,'&implicit_multiplication'); 675: 676: $safehole->wrap(\&Apache::lonmaxima::maxima_eval,$safeeval,'&maxima_eval'); 677: $safehole->wrap(\&Apache::lonmaxima::maxima_check,$safeeval,'&maxima_check'); 678: $safehole->wrap(\&Apache::lonmaxima::maxima_cas_formula_fix,$safeeval, 679: '&maxima_cas_formula_fix'); 680: 681: $safehole->wrap(\&Apache::lonr::r_eval,$safeeval,'&r_eval'); 682: $safehole->wrap(\&Apache::lonr::Rentry,$safeeval,'&Rentry'); 683: $safehole->wrap(\&Apache::lonr::Rarray,$safeeval,'&Rarray'); 684: $safehole->wrap(\&Apache::lonr::r_check,$safeeval,'&r_check'); 685: $safehole->wrap(\&Apache::lonr::r_cas_formula_fix,$safeeval, 686: '&r_cas_formula_fix'); 687: 688: $safehole->wrap(\&Apache::caparesponse::capa_formula_fix,$safeeval, 689: '&capa_formula_fix'); 690: 691: $safehole->wrap(\&Apache::lonlocal::locallocaltime,$safeeval, 692: '&locallocaltime'); 693: 694: $safehole->wrap(\&Math::Cephes::asin,$safeeval,'&asin'); 695: $safehole->wrap(\&Math::Cephes::acos,$safeeval,'&acos'); 696: $safehole->wrap(\&Math::Cephes::atan,$safeeval,'&atan'); 697: $safehole->wrap(\&Math::Cephes::sinh,$safeeval,'&sinh'); 698: $safehole->wrap(\&Math::Cephes::cosh,$safeeval,'&cosh'); 699: $safehole->wrap(\&Math::Cephes::tanh,$safeeval,'&tanh'); 700: $safehole->wrap(\&Math::Cephes::asinh,$safeeval,'&asinh'); 701: $safehole->wrap(\&Math::Cephes::acosh,$safeeval,'&acosh'); 702: $safehole->wrap(\&Math::Cephes::atanh,$safeeval,'&atanh'); 703: $safehole->wrap(\&Math::Cephes::erf,$safeeval,'&erf'); 704: $safehole->wrap(\&Math::Cephes::erfc,$safeeval,'&erfc'); 705: $safehole->wrap(\&Math::Cephes::j0,$safeeval,'&j0'); 706: $safehole->wrap(\&Math::Cephes::j1,$safeeval,'&j1'); 707: $safehole->wrap(\&Math::Cephes::jn,$safeeval,'&jn'); 708: $safehole->wrap(\&Math::Cephes::jv,$safeeval,'&jv'); 709: $safehole->wrap(\&Math::Cephes::y0,$safeeval,'&y0'); 710: $safehole->wrap(\&Math::Cephes::y1,$safeeval,'&y1'); 711: $safehole->wrap(\&Math::Cephes::yn,$safeeval,'&yn'); 712: $safehole->wrap(\&Math::Cephes::yv,$safeeval,'&yv'); 713: 714: $safehole->wrap(\&Math::Cephes::bdtr ,$safeeval,'&bdtr' ); 715: $safehole->wrap(\&Math::Cephes::bdtrc ,$safeeval,'&bdtrc' ); 716: $safehole->wrap(\&Math::Cephes::bdtri ,$safeeval,'&bdtri' ); 717: $safehole->wrap(\&Math::Cephes::btdtr ,$safeeval,'&btdtr' ); 718: $safehole->wrap(\&Math::Cephes::chdtr ,$safeeval,'&chdtr' ); 719: $safehole->wrap(\&Math::Cephes::chdtrc,$safeeval,'&chdtrc'); 720: $safehole->wrap(\&Math::Cephes::chdtri,$safeeval,'&chdtri'); 721: $safehole->wrap(\&Math::Cephes::fdtr ,$safeeval,'&fdtr' ); 722: $safehole->wrap(\&Math::Cephes::fdtrc ,$safeeval,'&fdtrc' ); 723: $safehole->wrap(\&Math::Cephes::fdtri ,$safeeval,'&fdtri' ); 724: $safehole->wrap(\&Math::Cephes::gdtr ,$safeeval,'&gdtr' ); 725: $safehole->wrap(\&Math::Cephes::gdtrc ,$safeeval,'&gdtrc' ); 726: $safehole->wrap(\&Math::Cephes::nbdtr ,$safeeval,'&nbdtr' ); 727: $safehole->wrap(\&Math::Cephes::nbdtrc,$safeeval,'&nbdtrc'); 728: $safehole->wrap(\&Math::Cephes::nbdtri,$safeeval,'&nbdtri'); 729: $safehole->wrap(\&Math::Cephes::ndtr ,$safeeval,'&ndtr' ); 730: $safehole->wrap(\&Math::Cephes::ndtri ,$safeeval,'&ndtri' ); 731: $safehole->wrap(\&Math::Cephes::pdtr ,$safeeval,'&pdtr' ); 732: $safehole->wrap(\&Math::Cephes::pdtrc ,$safeeval,'&pdtrc' ); 733: $safehole->wrap(\&Math::Cephes::pdtri ,$safeeval,'&pdtri' ); 734: $safehole->wrap(\&Math::Cephes::stdtr ,$safeeval,'&stdtr' ); 735: $safehole->wrap(\&Math::Cephes::stdtri,$safeeval,'&stdtri'); 736: 737: $safehole->wrap(\&Math::Cephes::Matrix::mat,$safeeval,'&mat'); 738: $safehole->wrap(\&Math::Cephes::Matrix::new,$safeeval, 739: '&Math::Cephes::Matrix::new'); 740: $safehole->wrap(\&Math::Cephes::Matrix::coef,$safeeval, 741: '&Math::Cephes::Matrix::coef'); 742: $safehole->wrap(\&Math::Cephes::Matrix::clr,$safeeval, 743: '&Math::Cephes::Matrix::clr'); 744: $safehole->wrap(\&Math::Cephes::Matrix::add,$safeeval, 745: '&Math::Cephes::Matrix::add'); 746: $safehole->wrap(\&Math::Cephes::Matrix::sub,$safeeval, 747: '&Math::Cephes::Matrix::sub'); 748: $safehole->wrap(\&Math::Cephes::Matrix::mul,$safeeval, 749: '&Math::Cephes::Matrix::mul'); 750: $safehole->wrap(\&Math::Cephes::Matrix::div,$safeeval, 751: '&Math::Cephes::Matrix::div'); 752: $safehole->wrap(\&Math::Cephes::Matrix::inv,$safeeval, 753: '&Math::Cephes::Matrix::inv'); 754: $safehole->wrap(\&Math::Cephes::Matrix::transp,$safeeval, 755: '&Math::Cephes::Matrix::transp'); 756: $safehole->wrap(\&Math::Cephes::Matrix::simq,$safeeval, 757: '&Math::Cephes::Matrix::simq'); 758: $safehole->wrap(\&Math::Cephes::Matrix::mat_to_vec,$safeeval, 759: '&Math::Cephes::Matrix::mat_to_vec'); 760: $safehole->wrap(\&Math::Cephes::Matrix::vec_to_mat,$safeeval, 761: '&Math::Cephes::Matrix::vec_to_mat'); 762: $safehole->wrap(\&Math::Cephes::Matrix::check,$safeeval, 763: '&Math::Cephes::Matrix::check'); 764: $safehole->wrap(\&Math::Cephes::Matrix::check,$safeeval, 765: '&Math::Cephes::Matrix::check'); 766: 767: # $safehole->wrap(\&Math::Cephes::new_fract,$safeeval,'&new_fract'); 768: # $safehole->wrap(\&Math::Cephes::radd,$safeeval,'&radd'); 769: # $safehole->wrap(\&Math::Cephes::rsub,$safeeval,'&rsub'); 770: # $safehole->wrap(\&Math::Cephes::rmul,$safeeval,'&rmul'); 771: # $safehole->wrap(\&Math::Cephes::rdiv,$safeeval,'&rdiv'); 772: # $safehole->wrap(\&Math::Cephes::euclid,$safeeval,'&euclid'); 773: 774: $safehole->wrap(\&Math::Random::random_beta,$safeeval,'&math_random_beta'); 775: $safehole->wrap(\&Math::Random::random_chi_square,$safeeval,'&math_random_chi_square'); 776: $safehole->wrap(\&Math::Random::random_exponential,$safeeval,'&math_random_exponential'); 777: $safehole->wrap(\&Math::Random::random_f,$safeeval,'&math_random_f'); 778: $safehole->wrap(\&Math::Random::random_gamma,$safeeval,'&math_random_gamma'); 779: $safehole->wrap(\&Math::Random::random_multivariate_normal,$safeeval,'&math_random_multivariate_normal'); 780: $safehole->wrap(\&Math::Random::random_multinomial,$safeeval,'&math_random_multinomial'); 781: $safehole->wrap(\&Math::Random::random_noncentral_chi_square,$safeeval,'&math_random_noncentral_chi_square'); 782: $safehole->wrap(\&Math::Random::random_noncentral_f,$safeeval,'&math_random_noncentral_f'); 783: $safehole->wrap(\&Math::Random::random_normal,$safeeval,'&math_random_normal'); 784: $safehole->wrap(\&Math::Random::random_permutation,$safeeval,'&math_random_permutation'); 785: $safehole->wrap(\&Math::Random::random_permuted_index,$safeeval,'&math_random_permuted_index'); 786: $safehole->wrap(\&Math::Random::random_uniform,$safeeval,'&math_random_uniform'); 787: $safehole->wrap(\&Math::Random::random_poisson,$safeeval,'&math_random_poisson'); 788: $safehole->wrap(\&Math::Random::random_uniform_integer,$safeeval,'&math_random_uniform_integer'); 789: $safehole->wrap(\&Math::Random::random_negative_binomial,$safeeval,'&math_random_negative_binomial'); 790: $safehole->wrap(\&Math::Random::random_binomial,$safeeval,'&math_random_binomial'); 791: $safehole->wrap(\&Math::Random::random_seed_from_phrase,$safeeval,'&random_seed_from_phrase'); 792: $safehole->wrap(\&Math::Random::random_set_seed_from_phrase,$safeeval,'&random_set_seed_from_phrase'); 793: $safehole->wrap(\&Math::Random::random_get_seed,$safeeval,'&random_get_seed'); 794: $safehole->wrap(\&Math::Random::random_set_seed,$safeeval,'&random_set_seed'); 795: $safehole->wrap(\&Apache::loncommon::languages,$safeeval,'&languages'); 796: $safehole->wrap(\&Apache::lonxml::error,$safeeval,'&LONCAPA_INTERNAL_ERROR'); 797: $safehole->wrap(\&Apache::lonxml::debug,$safeeval,'&LONCAPA_INTERNAL_DEBUG'); 798: $safehole->wrap(\&Apache::lonnet::logthis,$safeeval,'&LONCAPA_INTERNAL_LOGTHIS'); 799: $safehole->wrap(\&Apache::inputtags::finalizeawards,$safeeval,'&LONCAPA_INTERNAL_FINALIZEAWARDS'); 800: $safehole->wrap(\&Apache::caparesponse::get_sigrange,$safeeval,'&LONCAPA_INTERNAL_get_sigrange'); 801: $safehole->wrap(\&Apache::functionplotresponse::fpr_val,$safeeval,'&fpr_val'); 802: $safehole->wrap(\&Apache::functionplotresponse::fpr_f,$safeeval,'&fpr_f'); 803: $safehole->wrap(\&Apache::functionplotresponse::fpr_dfdx,$safeeval,'&fpr_dfdx'); 804: $safehole->wrap(\&Apache::functionplotresponse::fpr_d2fdx2,$safeeval,'&fpr_d2fdx2'); 805: $safehole->wrap(\&Apache::functionplotresponse::fpr_vectorcoords,$safeeval,'&fpr_vectorcoords'); 806: $safehole->wrap(\&Apache::functionplotresponse::fpr_objectcoords,$safeeval,'&fpr_objectcoords'); 807: $safehole->wrap(\&Apache::functionplotresponse::fpr_vectorlength,$safeeval,'&fpr_vectorlength'); 808: $safehole->wrap(\&Apache::functionplotresponse::fpr_vectorangle,$safeeval,'&fpr_vectorangle'); 809: 810: # use Data::Dumper; 811: # $safehole->wrap(\&Data::Dumper::Dumper,$safeeval,'&LONCAPA_INTERNAL_Dumper'); 812: #need to inspect this class of ops 813: # $safeeval->deny(":base_orig"); 814: $safeeval->permit("require"); 815: $safeinit .= ';$external::target="'.$target.'";'; 816: &Apache::run::run($safeinit,$safeeval); 817: &initialize_rndseed($safeeval); 818: } 819: 820: sub clean_safespace { 821: my ($safeeval) = @_; 822: delete_package_recurse($safeeval->{Root}); 823: } 824: 825: sub delete_package_recurse { 826: my ($package) = @_; 827: my @subp; 828: { 829: no strict 'refs'; 830: while (my ($key,$val) = each(%{*{"$package\::"}})) { 831: if (!defined($val)) { next; } 832: local (*ENTRY) = $val; 833: if (defined *ENTRY{HASH} && $key =~ /::$/ && 834: $key ne "main::" && $key ne "<none>::") 835: { 836: my ($p) = $package ne "main" ? "$package\::" : ""; 837: ($p .= $key) =~ s/::$//; 838: push(@subp,$p); 839: } 840: } 841: } 842: foreach my $p (@subp) { 843: delete_package_recurse($p); 844: } 845: Symbol::delete_package($package); 846: } 847: 848: sub initialize_rndseed { 849: my ($safeeval)=@_; 850: my $rndseed; 851: my ($symb,$courseid,$domain,$name) = &Apache::lonnet::whichuser(); 852: $rndseed=&Apache::lonnet::rndseed($symb,$courseid,$domain,$name); 853: my $safeinit = '$external::randomseed="'.$rndseed.'";'; 854: &Apache::lonxml::debug("Setting rndseed to $rndseed"); 855: &Apache::run::run($safeinit,$safeeval); 856: } 857: 858: sub default_homework_load { 859: my ($safeeval)=@_; 860: &Apache::lonxml::debug('Loading default_homework'); 861: my $default=&Apache::lonnet::getfile($Apache::lonnet::perlvar{'lonIncludes'}. 862: '/default_homework.lcpm'); 863: if ($default eq -1) { 864: &Apache::lonxml::error("<b>Unable to find <i>default_homework.lcpm</i></b>"); 865: } else { 866: &Apache::run::run($default,$safeeval); 867: $Apache::lonxml::default_homework_loaded=1; 868: } 869: } 870: 871: { 872: my $alarm_depth; 873: sub init_alarm { 874: alarm(0); 875: $alarm_depth=0; 876: } 877: 878: sub start_alarm { 879: if ($alarm_depth<1) { 880: my $old=alarm($Apache::lonnet::perlvar{'lonScriptTimeout'}); 881: if ($old) { 882: &Apache::lonxml::error("Cancelled an alarm of $old, this shouldn't occur."); 883: } 884: } 885: $alarm_depth++; 886: } 887: 888: sub end_alarm { 889: $alarm_depth--; 890: if ($alarm_depth<1) { alarm(0); } 891: } 892: } 893: my $metamode_was; 894: sub startredirection { 895: if (!$Apache::lonxml::redirection) { 896: $metamode_was=$Apache::lonxml::metamode; 897: } 898: $Apache::lonxml::metamode=0; 899: $Apache::lonxml::redirection++; 900: push (@Apache::lonxml::outputstack, ''); 901: } 902: 903: sub endredirection { 904: if (!$Apache::lonxml::redirection) { 905: &Apache::lonxml::error("Endredirection was called before a startredirection, perhaps you have unbalanced tags. Some debugging information:".join ":",caller); 906: return ''; 907: } 908: $Apache::lonxml::redirection--; 909: if (!$Apache::lonxml::redirection) { 910: $Apache::lonxml::metamode=$metamode_was; 911: } 912: pop @Apache::lonxml::outputstack; 913: } 914: sub in_redirection { 915: return ($Apache::lonxml::redirection > 0) 916: } 917: 918: sub end_tag { 919: my ($tagstack,$parstack,$token)=@_; 920: pop(@$tagstack); 921: pop(@$parstack); 922: &decreasedepth($token); 923: } 924: 925: sub initdepth { 926: @Apache::lonxml::depthcounter=(); 927: undef($Apache::lonxml::last_depth_count); 928: } 929: 930: 931: my @timers; 932: my $lasttime; 933: # @Apache::lonxml::depthcounter -> count of tags that exist so 934: # far at each level 935: # $Apache::lonxml::last_depth_count -> when ascending, need to 936: # remember the count for the level below the current level (for 937: # example going from 1_2 -> 1 -> 1_3 need to remember the 2 ) 938: 939: sub increasedepth { 940: my ($token) = @_; 941: push(@Apache::lonxml::depthcounter,$Apache::lonxml::last_depth_count+1); 942: undef($Apache::lonxml::last_depth_count); 943: my $time; 944: if ($Apache::lonxml::debug eq "1") { 945: push(@timers,[&gettimeofday()]); 946: $time=&tv_interval($lasttime); 947: $lasttime=[&gettimeofday()]; 948: } 949: my $spacing=' 'x($#Apache::lonxml::depthcounter); 950: $Apache::lonxml::curdepth=join('_',@Apache::lonxml::depthcounter); 951: # &Apache::lonxml::debug("s$spacing$Apache::lonxml::depth : $Apache::lonxml::olddepth : $Apache::lonxml::curdepth : $token->[1] : $time"); 952: #print "<br />s $Apache::lonxml::depth : $Apache::lonxml::olddepth : $curdepth : $token->[1]\n"; 953: } 954: 955: sub decreasedepth { 956: my ($token) = @_; 957: if ( $#Apache::lonxml::depthcounter == -1) { 958: &Apache::lonxml::warning(&mt("Missing tags, unable to properly run file.")); 959: } 960: $Apache::lonxml::last_depth_count = pop(@Apache::lonxml::depthcounter); 961: 962: my ($timer,$time); 963: if ($Apache::lonxml::debug eq "1") { 964: $timer=pop(@timers); 965: $time=&tv_interval($lasttime); 966: $lasttime=[&gettimeofday()]; 967: } 968: my $spacing=' 'x($#Apache::lonxml::depthcounter); 969: $Apache::lonxml::curdepth = join('_',@Apache::lonxml::depthcounter); 970: # &Apache::lonxml::debug("e$spacing$Apache::lonxml::depth : $Apache::lonxml::olddepth : $Apache::lonxml::curdepth : $token->[1] : $time : ".&tv_interval($timer)); 971: #print "<br />e $Apache::lonxml::depth : $Apache::lonxml::olddepth : $token->[1] : $curdepth\n"; 972: } 973: 974: sub get_id { 975: my ($parstack,$safeeval)=@_; 976: my $id= &Apache::lonxml::get_param('id',$parstack,$safeeval); 977: if ($env{'request.state'} eq 'construct' && $id =~ /([._]|[^\w\d\s[:punct:]])/) { 978: &error(&mt('ID [_1] contains invalid characters. IDs are only allowed to contain letters, numbers, spaces and -','"<tt>'.$id.'</tt>"')); 979: } 980: if ($id =~ /^\s*$/) { $id = $Apache::lonxml::curdepth; } 981: return $id; 982: } 983: 984: sub get_all_text_unbalanced { 985: #there is a copy of this in lonpublisher.pm 986: my($tag,$pars)= @_; 987: my $token; 988: my $result=''; 989: $tag='<'.$tag.'>'; 990: while ($token = $$pars[-1]->get_token) { 991: if (($token->[0] eq 'T')||($token->[0] eq 'C')||($token->[0] eq 'D')) { 992: if ($token->[0] eq 'T' && $token->[2]) { 993: $result.='<![CDATA['.$token->[1].']]>'; 994: } else { 995: $result.=$token->[1]; 996: } 997: } elsif ($token->[0] eq 'PI') { 998: $result.=$token->[2]; 999: } elsif ($token->[0] eq 'S') { 1000: $result.=$token->[4]; 1001: } elsif ($token->[0] eq 'E') { 1002: $result.=$token->[2]; 1003: } 1004: if ($result =~ /\Q$tag\E/is) { 1005: ($result,my $redo)=$result =~ /(.*)\Q$tag\E(.*)/is; 1006: #&Apache::lonxml::debug('Got a winner with leftovers ::'.$2); 1007: #&Apache::lonxml::debug('Result is :'.$1); 1008: $redo=$tag.$redo; 1009: &Apache::lonxml::newparser($pars,\$redo); 1010: last; 1011: } 1012: } 1013: return $result 1014: 1015: } 1016: 1017: ######################################################################### 1018: # # 1019: # bubble line counter management # 1020: # # 1021: ######################################################################### 1022: 1023: =pod 1024: 1025: For bubble grading mode and exam bubble printing mode, the tracking of 1026: the current 'bubble line number' is stored in the %env element 1027: 'form.counter', and is modifed and handled by the following routines. 1028: 1029: The value of it is stored in $Apache:lonxml::counter when live and 1030: stored back to env after done. 1031: 1032: =item &increment_counter($increment, $part_response); 1033: 1034: Increments the internal counter environment variable a specified amount 1035: 1036: Optional Arguments: 1037: $increment - amount to increment by (defaults to 1) 1038: Also 1 if the value is negative or zero. 1039: $part_response - A concatenation of the part and response id 1040: identifying exactly what is being 'answered'. 1041: 1042: 1043: =cut 1044: 1045: sub increment_counter { 1046: my ($increment, $part_response) = @_; 1047: if ($env{'form.grade_noincrement'}) { return; } 1048: if (!defined($increment) || $increment le 0) { 1049: $increment = 1; 1050: } 1051: $Apache::lonxml::counter += $increment; 1052: 1053: # If the caller supplied the response_id parameter, 1054: # Maintain its counter.. creating if necessary. 1055: 1056: if (defined($part_response)) { 1057: if (!defined($Apache::lonxml::counters_per_part{$part_response})) { 1058: $Apache::lonxml::counters_per_part{$part_response} = 0; 1059: } 1060: $Apache::lonxml::counters_per_part{$part_response} += $increment; 1061: my $new_value = $Apache::lonxml::counters_per_part{$part_response}; 1062: } 1063: 1064: $Apache::lonxml::counter_changed=1; 1065: } 1066: 1067: =pod 1068: 1069: =item &init_counter($increment); 1070: 1071: Initialize the internal counter environment variable 1072: 1073: =cut 1074: 1075: sub init_counter { 1076: if ($env{'request.state'} eq 'construct') { 1077: $Apache::lonxml::counter=1; 1078: $Apache::lonxml::counter_changed=1; 1079: } elsif (defined($env{'form.counter'})) { 1080: $Apache::lonxml::counter=$env{'form.counter'}; 1081: $Apache::lonxml::counter_changed=0; 1082: } else { 1083: $Apache::lonxml::counter=1; 1084: $Apache::lonxml::counter_changed=1; 1085: } 1086: } 1087: 1088: sub store_counter { 1089: &Apache::lonnet::appenv({'form.counter' => $Apache::lonxml::counter}); 1090: $Apache::lonxml::counter_changed=0; 1091: return ''; 1092: } 1093: 1094: { 1095: my $state; 1096: sub clear_problem_counter { 1097: undef($state); 1098: &Apache::lonnet::delenv('form.counter'); 1099: &Apache::lonxml::init_counter(); 1100: &Apache::lonxml::store_counter(); 1101: } 1102: 1103: sub remember_problem_counter { 1104: &Apache::lonnet::transfer_profile_to_env(undef,undef,1); 1105: $state = $env{'form.counter'}; 1106: } 1107: 1108: sub restore_problem_counter { 1109: if (defined($state)) { 1110: &Apache::lonnet::appenv({'form.counter' => $state}); 1111: } 1112: } 1113: sub get_problem_counter { 1114: if ($Apache::lonxml::counter_changed) { &store_counter() } 1115: &Apache::lonnet::transfer_profile_to_env(undef,undef,1); 1116: return $env{'form.counter'}; 1117: } 1118: } 1119: 1120: =pod 1121: 1122: =item bubble_lines_for_part(part_response) 1123: 1124: Returns the number of lines required to get a response for 1125: $part_response (this is just $Apache::lonxml::counters_per_part{$part_response} 1126: 1127: =cut 1128: 1129: sub bubble_lines_for_part { 1130: my ($part_response) = @_; 1131: 1132: if (!defined($Apache::lonxml::counters_per_part{$part_response})) { 1133: return 0; 1134: } else { 1135: return $Apache::lonxml::counters_per_part{$part_response}; 1136: } 1137: } 1138: 1139: =pod 1140: 1141: =item clear_bubble_lines_for_part 1142: 1143: Clears the hash of bubble lines per part. If a caller 1144: needs to analyze several resources this should be called between 1145: resources to reset the hash for each problem being analyzed. 1146: 1147: =cut 1148: 1149: sub clear_bubble_lines_for_part { 1150: undef(%Apache::lonxml::counters_per_part); 1151: } 1152: 1153: =pod 1154: 1155: =item set_bubble_lines(part_response, value) 1156: 1157: If there is a problem part, that for whatever reason 1158: requires bubble lines that are not 1159: the same as the counter increment, it can call this sub during 1160: analysis to set its hash value explicitly. 1161: 1162: =cut 1163: 1164: sub set_bubble_lines { 1165: my ($part_response, $value) = @_; 1166: 1167: $Apache::lonxml::counters_per_part{$part_response} = $value; 1168: } 1169: 1170: =pod 1171: 1172: =item get_bubble_line_hash 1173: 1174: Returns the current bubble line hash. This is assumed to 1175: be small so we return a copy 1176: 1177: 1178: =cut 1179: 1180: sub get_bubble_line_hash { 1181: return %Apache::lonxml::counters_per_part; 1182: } 1183: 1184: 1185: #-------------------------------------------------- 1186: 1187: sub get_all_text { 1188: my($tag,$pars,$style)= @_; 1189: my $gotfullstack=1; 1190: if (ref($pars) ne 'ARRAY') { 1191: $gotfullstack=0; 1192: $pars=[$pars]; 1193: } 1194: if (ref($style) ne 'HASH') { 1195: $style={}; 1196: } 1197: my $depth=0; 1198: my $token; 1199: my $result=''; 1200: if ( $tag =~ m:^/: ) { 1201: my $tag=substr($tag,1); 1202: #&Apache::lonxml::debug("have:$tag:"); 1203: my $top_empty=0; 1204: while (($depth >=0) && ($#$pars > -1) && (!$top_empty)) { 1205: while (($depth >=0) && ($token = $$pars[-1]->get_token)) { 1206: #&Apache::lonxml::debug("e token:$token->[0]:$depth:$token->[1]:".$#$pars.":".$#Apache::lonxml::pwd); 1207: if (($token->[0] eq 'T')||($token->[0] eq 'C')||($token->[0] eq 'D')) { 1208: if ($token->[2]) { 1209: $result.='<![CDATA['.$token->[1].']]>'; 1210: } else { 1211: $result.=$token->[1]; 1212: } 1213: } elsif ($token->[0] eq 'PI') { 1214: $result.=$token->[2]; 1215: } elsif ($token->[0] eq 'S') { 1216: if ($token->[1] =~ /^\Q$tag\E$/i) { $depth++; } 1217: if ($token->[1] =~ /^LONCAPA_INTERNAL_TURN_STYLE_ON$/) { $Apache::lonxml::usestyle=1; } 1218: if ($token->[1] =~ /^LONCAPA_INTERNAL_TURN_STYLE_OFF$/) { $Apache::lonxml::usestyle=0; } 1219: $result.=$token->[4]; 1220: } elsif ($token->[0] eq 'E') { 1221: if ( $token->[1] =~ /^\Q$tag\E$/i) { $depth--; } 1222: #skip sending back the last end tag 1223: if ($depth == 0 && exists($$style{'/'.$token->[1]}) && $Apache::lonxml::usestyle) { 1224: my $string= 1225: '<LONCAPA_INTERNAL_TURN_STYLE_OFF end="yes" />'. 1226: $$style{'/'.$token->[1]}. 1227: $token->[2]. 1228: '<LONCAPA_INTERNAL_TURN_STYLE_ON />'; 1229: &Apache::lonxml::newparser($pars,\$string); 1230: #&Apache::lonxml::debug("reParsing $string"); 1231: next; 1232: } 1233: if ($depth > -1) { 1234: $result.=$token->[2]; 1235: } else { 1236: $$pars[-1]->unget_token($token); 1237: } 1238: } 1239: } 1240: if (($depth >=0) && ($#$pars == 0) ) { $top_empty=1; } 1241: if (($depth >=0) && ($#$pars > 0) ) { 1242: pop(@$pars); 1243: pop(@Apache::lonxml::pwd); 1244: } 1245: } 1246: if ($top_empty && $depth >= 0) { 1247: #never found the end tag ran out of text, throw error send back blank 1248: &error('Never found end tag for <'.$tag. 1249: '> current string <pre>'. 1250: &HTML::Entities::encode($result,'<>&"'). 1251: '</pre>'); 1252: if ($gotfullstack) { 1253: my $newstring='</'.$tag.'>'.$result; 1254: &Apache::lonxml::newparser($pars,\$newstring); 1255: } 1256: $result=''; 1257: } 1258: } else { 1259: while ($#$pars > -1) { 1260: while ($token = $$pars[-1]->get_token) { 1261: #&Apache::lonxml::debug("s token:$token->[0]:$depth:$token->[1]"); 1262: if (($token->[0] eq 'T')||($token->[0] eq 'C')|| 1263: ($token->[0] eq 'D')) { 1264: if ($token->[2]) { 1265: $result.='<![CDATA['.$token->[1].']]>'; 1266: } else { 1267: $result.=$token->[1]; 1268: } 1269: } elsif ($token->[0] eq 'PI') { 1270: $result.=$token->[2]; 1271: } elsif ($token->[0] eq 'S') { 1272: if ( $token->[1] =~ /^\Q$tag\E$/i) { 1273: $$pars[-1]->unget_token($token); last; 1274: } else { 1275: $result.=$token->[4]; 1276: } 1277: if ($token->[1] =~ /^LONCAPA_INTERNAL_TURN_STYLE_ON$/) { $Apache::lonxml::usestyle=1; } 1278: if ($token->[1] =~ /^LONCAPA_INTERNAL_TURN_STYLE_OFF$/) { $Apache::lonxml::usestyle=0; } 1279: } elsif ($token->[0] eq 'E') { 1280: $result.=$token->[2]; 1281: } 1282: } 1283: if (($#$pars > 0) ) { 1284: pop(@$pars); 1285: pop(@Apache::lonxml::pwd); 1286: } else { last; } 1287: } 1288: } 1289: #&Apache::lonxml::debug("Exit:$result:"); 1290: return $result 1291: } 1292: 1293: sub newparser { 1294: my ($parser,$contentref,$dir) = @_; 1295: push (@$parser,HTML::LCParser->new($contentref)); 1296: $$parser[-1]->xml_mode(1); 1297: $$parser[-1]->marked_sections(1); 1298: if ( $dir eq '' ) { 1299: push (@Apache::lonxml::pwd, $Apache::lonxml::pwd[$#Apache::lonxml::pwd]); 1300: } else { 1301: push (@Apache::lonxml::pwd, $dir); 1302: } 1303: } 1304: 1305: sub parstring { 1306: my ($token) = @_; 1307: my (@vars,@values); 1308: foreach my $attr (@{$token->[3]}) { 1309: if ($attr!~/\W/) { 1310: my $val=$token->[2]->{$attr}; 1311: $val =~ s/([\%\@\\\"\'])/\\$1/g; 1312: $val =~ s/(\$[^\{a-zA-Z_])/\\$1/g; 1313: $val =~ s/(\$)$/\\$1/; 1314: #if ($val =~ m/^[\%\@]/) { $val="\\".$val; } 1315: push(@vars,"\$$attr"); 1316: push(@values,"\"$val\""); 1317: } 1318: } 1319: my $var_init = 1320: (@vars) ? 'my ('.join(',',@vars).') = ('.join(',',@values).');' 1321: : ''; 1322: return $var_init; 1323: } 1324: 1325: sub extlink { 1326: my ($res,$exact)=@_; 1327: if (!$exact) { 1328: $res=&Apache::lonnet::hreflocation($Apache::lonxml::pwd[-1],$res); 1329: } 1330: push(@Apache::lonxml::extlinks,$res) 1331: } 1332: 1333: sub writeallows { 1334: unless ($#extlinks>=0) { return; } 1335: my $thisurl = &Apache::lonnet::clutter(shift); 1336: if ($env{'httpref.'.$thisurl}) { 1337: $thisurl=$env{'httpref.'.$thisurl}; 1338: } 1339: my $thisdir=$thisurl; 1340: $thisdir=~s/\/[^\/]+$//; 1341: my %httpref=(); 1342: foreach (@extlinks) { 1343: $httpref{'httpref.'. 1344: &Apache::lonnet::hreflocation($thisdir,&unescape($_))}=$thisurl; 1345: } 1346: @extlinks=(); 1347: &Apache::lonnet::appenv(\%httpref); 1348: } 1349: 1350: sub register_ssi { 1351: my ($url,%form)=@_; 1352: push (@Apache::lonxml::ssi_info,{'url'=>$url,'form'=>\%form}); 1353: return ''; 1354: } 1355: 1356: sub do_registered_ssi { 1357: foreach my $info (@Apache::lonxml::ssi_info) { 1358: my %form=%{ $info->{'form'}}; 1359: my $url=$info->{'url'}; 1360: &Apache::lonnet::ssi($url,%form); 1361: } 1362: } 1363: 1364: sub add_script_result { 1365: my ($display) = @_; 1366: if ($display ne '') { 1367: push(@script_var_displays, $display); 1368: } 1369: } 1370: 1371: # 1372: # Afterburner handles anchors, highlights and links 1373: # 1374: sub afterburn { 1375: my $result=shift; 1376: &Apache::loncommon::get_unprocessed_cgi($ENV{'QUERY_STRING'}, 1377: ['highlight','anchor','link']); 1378: if ($env{'form.highlight'}) { 1379: foreach (split(/\,/,$env{'form.highlight'})) { 1380: my $anchorname=$_; 1381: my $matchthis=$anchorname; 1382: $matchthis=~s/\_+/\\s\+/g; 1383: $result=~s/(\Q$matchthis\E)/\<font color=\"red\"\>$1\<\/font\>/gs; 1384: } 1385: } 1386: if ($env{'form.link'}) { 1387: foreach (split(/\,/,$env{'form.link'})) { 1388: my ($anchorname,$linkurl)=split(/\>/,$_); 1389: my $matchthis=$anchorname; 1390: $matchthis=~s/\_+/\\s\+/g; 1391: $result=~s/(\Q$matchthis\E)/\<a href=\"$linkurl\"\>$1\<\/a\>/gs; 1392: } 1393: } 1394: if ($env{'form.anchor'}) { 1395: my $anchorname=$env{'form.anchor'}; 1396: my $matchthis=$anchorname; 1397: $matchthis=~s/\_+/\\s\+/g; 1398: $result=~s/(\Q$matchthis\E)/\<a name=\"$anchorname\"\>$1\<\/a\>/s; 1399: $result.=(<<"ENDSCRIPT"); 1400: <script type="text/javascript"> 1401: document.location.hash='$anchorname'; 1402: </script> 1403: ENDSCRIPT 1404: } 1405: return $result; 1406: } 1407: 1408: sub storefile { 1409: my ($file,$contents)=@_; 1410: &Apache::lonnet::correct_line_ends(\$contents); 1411: if (my $fh=Apache::File->new('>'.$file)) { 1412: print $fh $contents; 1413: $fh->close(); 1414: return 1; 1415: } else { 1416: &warning(&mt('Unable to save file [_1]','<tt>'.$file.'</tt>')); 1417: return 0; 1418: } 1419: } 1420: 1421: sub createnewhtml { 1422: my $title=&mt('Title of document goes here'); 1423: my $body=&mt('Body of document goes here'); 1424: my $filecontents=(<<SIMPLECONTENT); 1425: <html> 1426: <head> 1427: <title>$title</title> 1428: </head> 1429: <body bgcolor="#FFFFFF"> 1430: $body 1431: </body> 1432: </html> 1433: SIMPLECONTENT 1434: return $filecontents; 1435: } 1436: 1437: sub createnewsty { 1438: my $filecontents=(<<SIMPLECONTENT); 1439: <definetag name=""> 1440: <render> 1441: <web></web> 1442: <tex></tex> 1443: </render> 1444: </definetag> 1445: SIMPLECONTENT 1446: return $filecontents; 1447: } 1448: 1449: sub createnewjs { 1450: my $filecontents=(<<SIMPLECONTENT); 1451: <script type="text/javascript" language="Javascript"> 1452: 1453: </script> 1454: SIMPLECONTENT 1455: return $filecontents; 1456: } 1457: 1458: sub verify_html { 1459: my ($filecontents)=@_; 1460: my ($is_html,$is_xml); 1461: if ($filecontents =~/(?:\<|\&lt\;)\?xml[^\<]*\?(?:\>|\&gt\;)/is) { 1462: $is_xml = 1; 1463: } elsif ($filecontents =~/(?:\<|\&lt\;)html(?:\s+[^\<]+|\s*)(?:\>|\&gt\;)/is) { 1464: $is_html = 1; 1465: } 1466: unless ($is_xml || $is_html) { 1467: return &mt('File does not have [_1] or [_2] starting tag','<html>','<?xml ?>'); 1468: } 1469: if ($is_html) { 1470: if ($filecontents!~/(?:\<|\&lt\;)\/html(?:\>|\&gt\;)/is) { 1471: return &mt('File does not have [_1] ending tag','<html>'); 1472: } 1473: if ($filecontents!~/(?:\<|\&lt\;)(?:body|frameset)[^\<]*(?:\>|\&gt\;)/is) { 1474: return &mt('File does not have [_1] or [_2] starting tag','<body>','<frameset>'); 1475: } 1476: if ($filecontents!~/(?:\<|\&lt\;)\/(?:body|frameset)[^\<]*(?:\>|\&gt\;)/is) { 1477: return &mt('File does not have [_1] or [_2] ending tag','<body>','<frameset>'); 1478: } 1479: } 1480: return ''; 1481: } 1482: 1483: sub renderingoptions { 1484: my %langchoices=('' => ''); 1485: foreach (&Apache::loncommon::languageids()) { 1486: if (&Apache::loncommon::supportedlanguagecode($_)) { 1487: $langchoices{&Apache::loncommon::supportedlanguagecode($_)} 1488: = &Apache::loncommon::plainlanguagedescription($_); 1489: } 1490: } 1491: my $output; 1492: unless ($env{'form.forceedit'}) { 1493: $output .= 1494: '<span class="LC_nobreak">'. 1495: &mt('Language:').' '. 1496: &Apache::loncommon::select_form( 1497: $env{'form.languages'}, 1498: 'languages', 1499: {&Apache::lonlocal::texthash(%langchoices)}). 1500: '</span>'; 1501: } 1502: $output .= 1503: ' <span class="LC_nobreak">'. 1504: &mt('Math Rendering:').' '. 1505: &Apache::loncommon::select_form( 1506: $env{'form.texengine'}, 1507: 'texengine', 1508: {&Apache::lonlocal::texthash 1509: ('' => '', 1510: 'tth' => 'tth (TeX to HTML)', 1511: 'MathJax' => 'MathJax', 1512: 'jsMath' => 'jsMath', 1513: 'mimetex' => 'mimetex (Convert to Images)')}). 1514: '</span>'; 1515: return $output; 1516: } 1517: 1518: sub inserteditinfo { 1519: my ($filecontents,$filetype,$filename,$symb,$itemtitle,$folderpath,$uri,$action) = @_; 1520: $filecontents = &HTML::Entities::encode($filecontents,'<>&"'); 1521: my $xml_help = ''; 1522: my $initialize=''; 1523: my $textarea_id = 'filecont'; 1524: my ($dragmath_button,$deps_button,$context,$cnum,$cdom,$add_to_onload, 1525: $add_to_onresize,$init_dragmath); 1526: $initialize=&Apache::lonhtmlcommon::spellheader(); 1527: if ($filetype eq 'html') { 1528: if ($env{'request.course.id'}) { 1529: $cdom = $env{'course.'.$env{'request.course.id'}.'.domain'}; 1530: $cnum = $env{'course.'.$env{'request.course.id'}.'.num'}; 1531: if ($uri =~ m{^\Q/uploaded/$cdom/$cnum/portfolio/syllabus/\E}) { 1532: $context = 'syllabus'; 1533: } 1534: } 1535: if (&Apache::lonhtmlcommon::htmlareabrowser()) { 1536: my $lang = &Apache::lonhtmlcommon::htmlarea_lang(); 1537: my %textarea_args = ( 1538: fullpage => 'true', 1539: dragmath => 'math', 1540: ); 1541: $initialize .= &Apache::lonhtmlcommon::htmlareaselectactive(\%textarea_args); 1542: if ($context eq 'syllabus') { 1543: $init_dragmath = "editmath_visibility('filecont','none')"; 1544: } 1545: } 1546: } 1547: $initialize .= (<<FULLPAGE); 1548: <script type="text/javascript"> 1549: // <![CDATA[ 1550: function initDocument() { 1551: resize_textarea('$textarea_id','LC_aftertextarea'); 1552: $init_dragmath 1553: } 1554: // ]]> 1555: </script> 1556: FULLPAGE 1557: my $textareaclass; 1558: if ($filetype eq 'html') { 1559: if ($context eq 'syllabus') { 1560: $deps_button = &Apache::lonhtmlcommon::dependencies_button()."\n"; 1561: $initialize .= 1562: &Apache::lonhtmlcommon::dependencycheck_js(undef,&mt('Syllabus'), 1563: $uri,undef, 1564: "/public/$cdom/$cnum/syllabus"). 1565: "\n"; 1566: if (&Apache::lonhtmlcommon::htmlareabrowser()) { 1567: $textareaclass = 'class="LC_richDefaultOn"'; 1568: } 1569: } elsif ($symb || $folderpath) { 1570: $deps_button = &Apache::lonhtmlcommon::dependencies_button()."\n"; 1571: $initialize .= 1572: &Apache::lonhtmlcommon::dependencycheck_js($symb,$itemtitle, 1573: undef,$folderpath,$uri)."\n"; 1574: } 1575: $dragmath_button = '<span id="math_filecont">'.&Apache::lonhtmlcommon::dragmath_button('filecont',1).'</span>'; 1576: $initialize .= "\n".&Apache::lonhtmlcommon::dragmath_js('EditMathPopup'); 1577: } 1578: $add_to_onload = 'initDocument();'; 1579: $add_to_onresize = "resize_textarea('$textarea_id','LC_aftertextarea');"; 1580: 1581: if ($filetype eq 'html') { 1582: my $not_author; 1583: if ($uri =~ m{^/uploaded/}) { 1584: $not_author = 1; 1585: } 1586: $xml_help=&Apache::loncommon::helpLatexCheatsheet(undef,undef,$not_author); 1587: } 1588: 1589: my $titledisplay=&display_title(); 1590: my %lt=&Apache::lonlocal::texthash('st' => 'Save and Edit', 1591: 'vi' => 'Save and View', 1592: 'dv' => 'Discard Edits and View', 1593: 'un' => 'undo', 1594: 'ed' => 'Edit'); 1595: my $spelllink = &Apache::lonhtmlcommon::spelllink('xmledit','filecont'); 1596: my $textarea_events = &Apache::edit::element_change_detection(); 1597: my $form_events = &Apache::edit::form_change_detection(); 1598: my $htmlerror; 1599: if ($filetype eq 'html') { 1600: $htmlerror=&verify_html($filecontents); 1601: if ($htmlerror) { 1602: $htmlerror='<span class="LC_error">'.$htmlerror.'</span>'; 1603: } 1604: if (&Apache::lonhtmlcommon::htmlareabrowser()) { 1605: unless ($textareaclass) { 1606: $textareaclass = 'class="LC_richDefaultOff"'; 1607: } 1608: } 1609: } 1610: my $undo; 1611: unless ($uri =~ m{^/uploaded/}) { 1612: $undo = '<input type="submit" name="Undo" accesskey="u" value="'.$lt{'un'}.'" />'."\n"; 1613: } 1614: my $editfooter=(<<ENDFOOTER); 1615: $initialize 1616: <a name="editsection" /> 1617: <form $form_events method="post" name="xmledit" action="$action"> 1618: <div class="LC_edit_problem_editxml_header"> 1619: <table class="LC_edit_problem_header_title"><tr><td> 1620: $filename 1621: </td><td align="right"> 1622: $xml_help 1623: </td></tr> 1624: </table> 1625: <div class="LC_edit_problem_discards"> 1626: <input type="submit" name="discardview" accesskey="d" value="$lt{'dv'}" /> 1627: $undo $htmlerror $deps_button $dragmath_button 1628: </div> 1629: <div class="LC_edit_problem_saves"> 1630: <input type="submit" name="savethisfile" accesskey="s" value="$lt{'st'}" /> 1631: <input type="submit" name="viewmode" accesskey="v" value="$lt{'vi'}" /> 1632: </div> 1633: </div> 1634: <textarea $textarea_events style="width:100%" cols="80" rows="44" name="filecont" id="filecont" $textareaclass>$filecontents</textarea><br />$spelllink 1635: <div id="LC_aftertextarea"> 1636: <br /> 1637: $titledisplay 1638: </div> 1639: </form> 1640: ENDFOOTER 1641: return ($editfooter,$add_to_onload,$add_to_onresize);; 1642: } 1643: 1644: sub get_target { 1645: my $viewgrades=&Apache::lonnet::allowed('vgr',$env{'request.course.id'}); 1646: if ( $env{'request.state'} eq 'published') { 1647: if ( defined($env{'form.grade_target'}) 1648: && ($viewgrades == 'F' )) { 1649: return ($env{'form.grade_target'}); 1650: } elsif (defined($env{'form.grade_target'})) { 1651: if (($env{'form.grade_target'} eq 'web') || 1652: ($env{'form.grade_target'} eq 'tex') ) { 1653: return $env{'form.grade_target'} 1654: } else { 1655: return 'web'; 1656: } 1657: } else { 1658: return 'web'; 1659: } 1660: } elsif ($env{'request.state'} eq 'construct') { 1661: if ( defined($env{'form.grade_target'})) { 1662: return ($env{'form.grade_target'}); 1663: } else { 1664: return 'web'; 1665: } 1666: } else { 1667: return 'web'; 1668: } 1669: } 1670: 1671: sub handler { 1672: my $request=shift; 1673: 1674: my $target=&get_target(); 1675: $Apache::lonxml::debug=$env{'user.debug'}; 1676: 1677: &Apache::loncommon::content_type($request,'text/html'); 1678: &Apache::loncommon::no_cache($request); 1679: if ($env{'request.state'} eq 'published') { 1680: $request->set_last_modified(&Apache::lonnet::metadata($request->uri, 1681: 'lastrevisiondate')); 1682: } 1683: # Embedded Flash movies from Camtasia served from https will not display in IE 1684: # if XML config file has expired from cache. 1685: if ($ENV{'SERVER_PORT'} == 443) { 1686: if ($request->uri =~ /\.xml$/) { 1687: my ($httpbrowser,$clientbrowser) = 1688: &Apache::loncommon::decode_user_agent($request); 1689: if ($clientbrowser =~ /^explorer$/i) { 1690: delete $request->headers_out->{'Cache-control'}; 1691: delete $request->headers_out->{'Pragma'}; 1692: my $expiration = time + 60; 1693: my $date=strftime("%a, %d %b %Y %H:%M:%S GMT",gmtime($expiration)); 1694: $request->headers_out->set("Expires" => $date); 1695: } 1696: } 1697: } 1698: $request->send_http_header; 1699: 1700: return OK if $request->header_only; 1701: 1702: 1703: my $file=&Apache::lonnet::filelocation("",$request->uri); 1704: my ($filetype,$breadcrumbtext); 1705: if ($file =~ /\.(sty|css|js|txt|tex)$/) { 1706: $filetype=$1; 1707: } else { 1708: $filetype='html'; 1709: } 1710: unless ($env{'request.uri'}) { 1711: $env{'request.uri'}=$request->uri; 1712: &Apache::loncommon::get_unprocessed_cgi($ENV{'QUERY_STRING'}, 1713: ['todocs']); 1714: } 1715: my ($cdom,$cnum); 1716: if ($env{'request.course.id'}) { 1717: $cdom = $env{'course.'.$env{'request.course.id'}.'.domain'}; 1718: $cnum = $env{'course.'.$env{'request.course.id'}.'.num'}; 1719: if ($filetype eq 'html') { 1720: if ($request->uri =~ m{^\Q/uploaded/$cdom/$cnum/portfolio/syllabus/\E.+$}) { 1721: if (&Apache::lonnet::allowed('mdc',$env{'request.course.id'})) { 1722: &Apache::loncommon::get_unprocessed_cgi($ENV{'QUERY_STRING'}, 1723: ['editmode']); 1724: } 1725: } 1726: } 1727: } 1728: if ($filetype eq 'sty') { 1729: $breadcrumbtext = 'Style File Editor'; 1730: } elsif ($filetype eq 'js') { 1731: $breadcrumbtext = 'Javascript Editor'; 1732: } elsif ($filetype eq 'css') { 1733: $breadcrumbtext = 'CSS Editor'; 1734: } elsif ($filetype eq 'txt') { 1735: $breadcrumbtext = 'Text Editor'; 1736: } elsif ($filetype eq 'tex') { 1737: $breadcrumbtext = 'TeX Editor'; 1738: } else { 1739: $breadcrumbtext = 'HTML Editor'; 1740: } 1741: 1742: # 1743: # Edit action? Save file. 1744: # 1745: if (!($env{'request.state'} eq 'published')) { 1746: if ($env{'form.savethisfile'} || $env{'form.viewmode'} || $env{'form.Undo'}) { 1747: my $html_file=&Apache::lonnet::getfile($file); 1748: my $error = &Apache::lonhomework::handle_save_or_undo($request, \$html_file, \$env{'form.filecont'}); 1749: if ($env{'form.savethisfile'}) { 1750: $env{'form.editmode'}='Edit'; #force edit mode 1751: } 1752: } 1753: } 1754: my %mystyle; 1755: my $result = ''; 1756: my $filecontents=&Apache::lonnet::getfile($file); 1757: if ($filecontents eq -1) { 1758: my $start_page=&Apache::loncommon::start_page('File Error'); 1759: my $end_page=&Apache::loncommon::end_page(); 1760: my $errormsg='<p class="LC_error">' 1761: .&mt('File not found: [_1]' 1762: ,'<span class="LC_filename">'.$file.'</span>') 1763: .'</p>'; 1764: $result=(<<ENDNOTFOUND); 1765: $start_page 1766: $errormsg 1767: $end_page 1768: ENDNOTFOUND 1769: $filecontents=''; 1770: if ($env{'request.state'} ne 'published') { 1771: if ($filetype eq 'sty') { 1772: $filecontents=&createnewsty(); 1773: } elsif ($filetype eq 'js') { 1774: $filecontents=&createnewjs(); 1775: } elsif ($filetype ne 'css' && $filetype ne 'txt' && $filetype ne 'tex') { 1776: $filecontents=&createnewhtml(); 1777: } 1778: $env{'form.editmode'}='Edit'; #force edit mode 1779: } 1780: } else { 1781: unless ($env{'request.state'} eq 'published') { 1782: if ($filecontents=~/BEGIN LON-CAPA Internal/) { 1783: &Apache::lonxml::error(&mt('This file appears to be a rendering of a LON-CAPA resource. If this is correct, this resource will act very oddly and incorrectly.')); 1784: } 1785: # 1786: # we are in construction space, see if edit mode forced 1787: &Apache::loncommon::get_unprocessed_cgi($ENV{'QUERY_STRING'}, 1788: ['editmode']); 1789: } 1790: if (!$env{'form.editmode'} || $env{'form.viewmode'} || $env{'form.discardview'}) { 1791: if ($filetype eq 'html' || $filetype eq 'sty') { 1792: &Apache::structuretags::reset_problem_globals(); 1793: $result = &Apache::lonxml::xmlparse($request,$target, 1794: $filecontents,'',%mystyle); 1795: # .html files may contain <problem> or <Task> need to clean 1796: # up if it did 1797: &Apache::structuretags::reset_problem_globals(); 1798: &Apache::lonhomework::finished_parsing(); 1799: } elsif ($filetype eq 'tex') { 1800: $result = &Apache::lontexconvert::converted(\$filecontents, 1801: $env{'form.texengine'}); 1802: if ($env{'form.return_only_error_and_warning_counts'}) { 1803: $result = "$errorcount:$warningcount"; 1804: } 1805: } else { 1806: $result = $filecontents; 1807: } 1808: &Apache::loncommon::get_unprocessed_cgi($ENV{'QUERY_STRING'}, 1809: ['rawmode']); 1810: if ($env{'form.rawmode'}) { $result = $filecontents; } 1811: if (($filetype ne 'html') && 1812: (!$env{'form.return_only_error_and_warning_counts'})) { 1813: my $nochgview = 1; 1814: my $controls = ''; 1815: if ($env{'request.state'} eq 'construct') { 1816: $controls = &Apache::loncommon::head_subbox( 1817: &Apache::loncommon::CSTR_pageheader() 1818: .&Apache::londefdef::edit_controls($nochgview)); 1819: } 1820: if ($filetype ne 'sty' && $filetype ne 'tex') { 1821: $result =~ s/</</g; 1822: $result =~ s/>/>/g; 1823: $result = '<table class="LC_sty_begin">'. 1824: '<tr><td><b><pre>'.$result. 1825: '</pre></b></td></tr></table>'; 1826: } 1827: my $brcrum; 1828: if ($env{'request.state'} eq 'construct') { 1829: $brcrum = [{'href' => &Apache::loncommon::authorspace($request->uri), 1830: 'text' => 'Authoring Space'}, 1831: {'href' => '', 1832: 'text' => $breadcrumbtext}]; 1833: } else { 1834: $brcrum = ''; # FIXME: Where are we? 1835: } 1836: my %options = ('bread_crumbs' => $brcrum, 1837: 'bgcolor' => '#FFFFFF'); 1838: $result = 1839: &Apache::loncommon::start_page(undef,undef,\%options) 1840: .$controls 1841: .$result 1842: .&Apache::loncommon::end_page(); 1843: } 1844: } 1845: } 1846: 1847: # 1848: # Edit action? Insert editing commands 1849: # 1850: unless ($env{'request.state'} eq 'published') { 1851: if ($env{'form.editmode'} && (!($env{'form.viewmode'})) && (!($env{'form.discardview'}))) 1852: { 1853: my ($displayfile,$url,$symb,$itemtitle,$action); 1854: $displayfile=$request->uri; 1855: if ($request->uri =~ m{^/uploaded/}) { 1856: if ($env{'request.course.id'}) { 1857: if ($request->uri =~ m{^\Q/uploaded/$cdom/$cnum/supplemental/\E}) { 1858: &Apache::loncommon::get_unprocessed_cgi($ENV{'QUERY_STRING'}, 1859: ['folderpath','title']); 1860: } elsif ($request->uri =~ m{^\Q/uploaded/$cdom/$cnum/portfolio/syllabus/\E(.+)$}) { 1861: my $filename = $1; 1862: if ($1 eq 'loncapa.html') { 1863: $displayfile = &mt('Syllabus (minimal template)'); 1864: $action = $request->uri.'?forceedit=1'; 1865: } else { 1866: $displayfile = &mt('Syllabus file: [_1]',$1); 1867: } 1868: $itemtitle = &mt('Syllabus'); 1869: } 1870: } 1871: unless ($itemtitle) { 1872: ($symb,$itemtitle,$displayfile) = 1873: &get_courseupload_hierarchy($request->uri, 1874: $env{'form.folderpath'}, 1875: $env{'form.title'}); 1876: } 1877: } else { 1878: $displayfile=~s/^\/[^\/]*//; 1879: } 1880: 1881: my ($edit_info, $add_to_onload, $add_to_onresize)= 1882: &inserteditinfo($filecontents,$filetype,$displayfile,$symb, 1883: $itemtitle,$env{'form.folderpath'},$request->uri,$action); 1884: 1885: my %options = 1886: ('add_entries' => 1887: {'onresize' => $add_to_onresize, 1888: 'onload' => $add_to_onload, }); 1889: my $header; 1890: if ($env{'request.state'} eq 'construct') { 1891: $options{'bread_crumbs'} = [{ 1892: 'href' => &Apache::loncommon::authorspace($request->uri), 1893: 'text' => 'Authoring Space'}, 1894: {'href' => '', 1895: 'text' => $breadcrumbtext}]; 1896: $header = &Apache::loncommon::head_subbox( 1897: &Apache::loncommon::CSTR_pageheader()); 1898: } 1899: my $js = 1900: &Apache::edit::js_change_detection(). 1901: &Apache::loncommon::resize_textarea_js(); 1902: my $start_page = &Apache::loncommon::start_page(undef,$js, 1903: \%options); 1904: $result = $start_page 1905: .$header 1906: .&Apache::lonxml::message_location() 1907: .$edit_info 1908: .&Apache::loncommon::end_page(); 1909: } 1910: } 1911: if ($filetype eq 'html') { &writeallows($request->uri); } 1912: 1913: &Apache::lonxml::add_messages(\$result); 1914: $request->print($result); 1915: 1916: return OK; 1917: } 1918: 1919: sub display_title { 1920: my $result; 1921: if ($env{'request.state'} eq 'construct') { 1922: my $title=&Apache::lonnet::gettitle(); 1923: if (!defined($title) || $title eq '') { 1924: $title = $env{'request.filename'}; 1925: $title = substr($title, rindex($title, '/') + 1); 1926: } 1927: $result = "<script type='text/javascript'>top.document.title = '$title - LON-CAPA " 1928: .&mt('Authoring Space')."';</script>"; 1929: } 1930: return $result; 1931: } 1932: 1933: sub get_courseupload_hierarchy { 1934: my ($url,$folderpath,$title) = @_; 1935: my ($symb,$itemtitle,$displaypath); 1936: if ($env{'request.course.id'}) { 1937: if ($folderpath =~ /^supplemental/) { 1938: my @folders = split(/\&/,$folderpath); 1939: my @pathitems; 1940: while (@folders) { 1941: my $folder=shift(@folders); 1942: my $foldername=shift(@folders); 1943: $foldername =~ s/\:(\d*)\:(\w*)\:(\w*):(\d*)\:?(\d*)$//; 1944: push(@pathitems,&unescape($foldername)); 1945: } 1946: if ($title) { 1947: push(@pathitems,&unescape($title)); 1948: } 1949: $displaypath = join(' » ',@pathitems); 1950: } else { 1951: $symb = &Apache::lonnet::symbread($url); 1952: my ($map,$id,$res)=&Apache::lonnet::decode_symb($symb); 1953: my $navmap=Apache::lonnavmaps::navmap->new; 1954: if (ref($navmap)) { 1955: my $res = $navmap->getBySymb($symb); 1956: if (ref($res)) { 1957: my @pathitems = 1958: &Apache::loncommon::get_folder_hierarchy($navmap,$map,1); 1959: $itemtitle = $res->compTitle(); 1960: push(@pathitems,$itemtitle); 1961: $displaypath = join(' » ',@pathitems); 1962: } 1963: } 1964: } 1965: } 1966: return ($symb,$itemtitle,$displaypath); 1967: } 1968: 1969: sub debug { 1970: if ($Apache::lonxml::debug eq "1") { 1971: $|=1; 1972: my $request=$Apache::lonxml::request; 1973: if (!$request) { 1974: eval { $request=Apache->request; }; 1975: } 1976: if (!$request) { 1977: eval { $request=Apache2::RequestUtil->request; }; 1978: } 1979: $request->print('<font size="-2"><pre>DEBUG:'.&HTML::Entities::encode($_[0],'<>&"')."</pre></font>\n"); 1980: #&Apache::lonnet::logthis($_[0]); 1981: } 1982: } 1983: 1984: sub show_error_warn_msg { 1985: if (($env{'request.filename'} eq 1986: $Apache::lonnet::perlvar{'lonDocRoot'}.'/res/lib/templates/simpleproblem.problem') && 1987: (&Apache::lonnet::allowed('mdc',$env{'request.course.id'}))) { 1988: return 1; 1989: } 1990: return (($Apache::lonxml::debug eq 1) || 1991: ($env{'request.state'} eq 'construct') || 1992: ($Apache::lonhomework::browse eq 'F' 1993: && 1994: $env{'form.show_errors'} eq 'on')); 1995: } 1996: 1997: sub error { 1998: my @errors = @_; 1999: 2000: $errorcount++; 2001: 2002: $Apache::lonxml::internal_error=1; 2003: 2004: if (defined($Apache::inputtags::part)) { 2005: if ( @Apache::inputtags::response ) { 2006: push(@errors, 2007: &mt("This error occurred while processing response [_1] in part [_2]", 2008: $Apache::inputtags::response[-1], 2009: $Apache::inputtags::part)); 2010: } else { 2011: push(@errors, 2012: &mt("This error occurred while processing part [_1]", 2013: $Apache::inputtags::part)); 2014: } 2015: } 2016: 2017: if ( &show_error_warn_msg() ) { 2018: # If printing in construction space, put the error inside <pre></pre> 2019: push(@Apache::lonxml::error_messages, 2020: $Apache::lonxml::warnings_error_header 2021: .'<div class="LC_error">' 2022: .'<b>'.&mt('ERROR:').' </b>'.join("<br />\n",@errors) 2023: ."</div>\n"); 2024: $Apache::lonxml::warnings_error_header=''; 2025: } else { 2026: my $errormsg; 2027: my ($symb)=&Apache::lonnet::symbread(); 2028: if ( !$symb ) { 2029: #public or browsers 2030: $errormsg=&mt("An error occurred while processing this resource. The author has been notified."); 2031: } 2032: my $host=$Apache::lonnet::perlvar{'lonHostID'}; 2033: push(@errors, 2034: &mt("The error occurred on host [_1]", 2035: "<tt>$host</tt>")); 2036: 2037: my $msg = join('<br />', @errors); 2038: 2039: #notify author 2040: &Apache::lonmsg::author_res_msg($env{'request.filename'},$msg); 2041: #notify course 2042: if ( $symb && $env{'request.course.id'} ) { 2043: my $cnum=$env{'course.'.$env{'request.course.id'}.'.num'}; 2044: my $cdom=$env{'course.'.$env{'request.course.id'}.'.domain'}; 2045: my (undef,%users)=&Apache::lonmsg::decide_receiver(undef,0,1,1,1); 2046: my $declutter=&Apache::lonnet::declutter($env{'request.filename'}); 2047: my $baseurl = &Apache::lonnet::clutter($declutter); 2048: my @userlist; 2049: foreach (keys %users) { 2050: my ($user,$domain) = split(/:/, $_); 2051: push(@userlist,"$user:$domain"); 2052: my $key=$declutter.'_'.$user.'_'.$domain; 2053: my %lastnotified=&Apache::lonnet::get('nohist_xmlerrornotifications', 2054: [$key], 2055: $cdom,$cnum); 2056: my $now=time; 2057: if ($now-$lastnotified{$key}>86400) { 2058: my $title = &Apache::lonnet::gettitle($symb); 2059: my $sentmessage; 2060: &Apache::lonmsg::user_normal_msg($user,$domain, 2061: "Error [$title]",$msg,'',$baseurl,'','', 2062: \$sentmessage,$symb,$title,1); 2063: &Apache::lonnet::put('nohist_xmlerrornotifications', 2064: {$key => $now}, 2065: $cdom,$cnum); 2066: } 2067: } 2068: if ($env{'request.role.adv'}) { 2069: $errormsg=&mt("An error occurred while processing this resource. The course personnel ([_1]) and the author have been notified.",join(', ',@userlist)); 2070: } else { 2071: $errormsg=&mt("An error occurred while processing this resource. The instructor has been notified."); 2072: } 2073: } 2074: push(@Apache::lonxml::error_messages,"<span class=\"LC_warning\">$errormsg</span><br />"); 2075: } 2076: } 2077: 2078: sub warning { 2079: $warningcount++; 2080: 2081: if ($env{'form.grade_target'} ne 'tex') { 2082: if ( &show_error_warn_msg() ) { 2083: push(@Apache::lonxml::warning_messages, 2084: $Apache::lonxml::warnings_error_header 2085: .'<div class="LC_warning">' 2086: .&mt('[_1]W[_2]ARNING','<b>','</b>')."<b>:</b> ".join('<br />',@_) 2087: ."</div>\n" 2088: ); 2089: $Apache::lonxml::warnings_error_header=''; 2090: } 2091: } 2092: } 2093: 2094: sub info { 2095: if ($env{'form.grade_target'} ne 'tex' 2096: && $env{'request.state'} eq 'construct') { 2097: push(@Apache::lonxml::info_messages,join('<br />',@_)."<br />\n"); 2098: } 2099: } 2100: 2101: sub message_location { 2102: return '__LONCAPA_INTERNAL_MESSAGE_LOCATION__'; 2103: } 2104: 2105: sub add_messages { 2106: my ($msg)=@_; 2107: my $result=join(' ', 2108: @Apache::lonxml::info_messages, 2109: @Apache::lonxml::error_messages, 2110: @Apache::lonxml::warning_messages); 2111: undef(@Apache::lonxml::info_messages); 2112: undef(@Apache::lonxml::error_messages); 2113: undef(@Apache::lonxml::warning_messages); 2114: $$msg=~s/__LONCAPA_INTERNAL_MESSAGE_LOCATION__/$result/; 2115: $$msg=~s/__LONCAPA_INTERNAL_MESSAGE_LOCATION__//g; 2116: } 2117: 2118: sub get_param { 2119: my ($param,$parstack,$safeeval,$context,$case_insensitive, $noelide) = @_; 2120: 2121: if ( ! $context ) { $context = -1; } 2122: my $args =''; 2123: if ( $#$parstack > (-2-$context) ) { $args=$$parstack[$context]; } 2124: if ( ! $Apache::lonxml::usestyle ) { 2125: $args=$Apache::lonxml::style_values.$args; 2126: } 2127: 2128: 2129: if ($noelide) { 2130: # $args =~ s/\\'/'/g; 2131: $args =~ s/'\$/'\\\$/g; 2132: } 2133: 2134: if ( ! $args ) { return undef; } 2135: if ( $case_insensitive ) { 2136: if ($args =~ s/(my (?:.*))(\$\Q$param\E[,\)])/$1.lc($2)/ei) { 2137: 2138: return &Apache::run::run("{$args;".'return $'.$param.'}', 2139: $safeeval); #' 2140: } else { 2141: return undef; 2142: } 2143: } else { 2144: if ( $args =~ /my .*\$\Q$param\E[,\)]/ ) { 2145: 2146: return &Apache::run::run("{$args;".'return $'.$param.'}', 2147: $safeeval); #' 2148: } else { 2149: return undef; 2150: } 2151: } 2152: } 2153: 2154: sub get_param_var { 2155: my ($param,$parstack,$safeeval,$context,$case_insensitive) = @_; 2156: if ( ! $context ) { $context = -1; } 2157: my $args =''; 2158: if ( $#$parstack > (-2-$context) ) { $args=$$parstack[$context]; } 2159: if ( ! $Apache::lonxml::usestyle ) { 2160: $args=$Apache::lonxml::style_values.$args; 2161: } 2162: &Apache::lonxml::debug("Args are $args param is $param"); 2163: if ($case_insensitive) { 2164: if (! ($args=~s/(my (?:.*))(\$\Q$param\E[,\)])/$1.lc($2)/ei)) { 2165: return undef; 2166: } 2167: } elsif ( $args !~ /my .*\$\Q$param\E[,\)]/ ) { return undef; } 2168: my $value=&Apache::run::run("{$args;".'return $'.$param.'}',$safeeval); #' 2169: &Apache::lonxml::debug("first run is $value"); 2170: if ($value =~ /^[\$\@\%][a-zA-Z_]\w*$/) { 2171: &Apache::lonxml::debug("doing second"); 2172: my @result=&Apache::run::run("return $value",$safeeval,1); 2173: if (!defined($result[0])) { 2174: return $value 2175: } else { 2176: if (wantarray) { return @result; } else { return $result[0]; } 2177: } 2178: } else { 2179: return $value; 2180: } 2181: } 2182: 2183: sub register_insert_xml { 2184: my $parser = HTML::LCParser->new($Apache::lonnet::perlvar{'lonTabDir'} 2185: .'/insertlist.xml'); 2186: my ($tagnum,$in_help)=(0,0); 2187: my @alltags; 2188: my $tag; 2189: while (my $token = $parser->get_token()) { 2190: if ($token->[0] eq 'S') { 2191: my $key; 2192: if ($token->[1] eq 'tag') { 2193: $tag = $token->[2]{'name'}; 2194: if (defined($tag)) { 2195: $insertlist{$tagnum.'.tag'} = $tag; 2196: $insertlist{$tag.'.num'} = $tagnum; 2197: push(@alltags,$tag); 2198: } 2199: } elsif ($in_help && $token->[1] eq 'file') { 2200: $key = $tag.'.helpfile'; 2201: } elsif ($in_help && $token->[1] eq 'description') { 2202: $key = $tag.'.helpdesc'; 2203: } elsif ($token->[1] eq 'description' || 2204: $token->[1] eq 'color' || 2205: $token->[1] eq 'show' ) { 2206: $key = $tag.'.'.$token->[1]; 2207: } elsif ($token->[1] eq 'insert_sub') { 2208: $key = $tag.'.function'; 2209: } elsif ($token->[1] eq 'help') { 2210: $in_help=1; 2211: } elsif ($token->[1] eq 'allow') { 2212: $key = $tag.'.allow'; 2213: } 2214: if (defined($key)) { 2215: $insertlist{$key} = $parser->get_text(); 2216: $insertlist{$key} =~ s/(^\s*|\s*$ )//gx; 2217: } 2218: } elsif ($token->[0] eq 'E') { 2219: if ($token->[1] eq 'tag') { 2220: undef($tag); 2221: $tagnum++; 2222: } elsif ($token->[1] eq 'help') { 2223: undef($in_help); 2224: } 2225: } 2226: } 2227: 2228: # parse the allows and ignore tags set to <show>no</show> 2229: foreach my $tag (@alltags) { 2230: next if (!exists($insertlist{$tag.'.allow'})); 2231: my $allow = $insertlist{$tag.'.allow'}; 2232: foreach my $element (split(',',$allow)) { 2233: $element =~ s/(^\s*|\s*$ )//gx; 2234: if (!exists($insertlist{$element.'.show'}) 2235: || $insertlist{$element.'.show'} ne 'no') { 2236: push(@{ $insertlist{$tag.'.which'} },$element); 2237: } 2238: } 2239: } 2240: } 2241: 2242: sub register_insert { 2243: return &register_insert_xml(@_); 2244: # &dump_insertlist('2'); 2245: } 2246: 2247: sub dump_insertlist { 2248: my ($ext) = @_; 2249: open(XML,">/tmp/insertlist.xml.$ext"); 2250: print XML ("<insertlist>"); 2251: my $i=0; 2252: 2253: while (exists($insertlist{"$i.tag"})) { 2254: my $tag = $insertlist{"$i.tag"}; 2255: print XML (" 2256: \t<tag name=\"$tag\">"); 2257: if (defined($insertlist{"$tag.description"})) { 2258: print XML (" 2259: \t\t<description>".$insertlist{"$tag.description"}."</description>"); 2260: } 2261: if (defined($insertlist{"$tag.color"})) { 2262: print XML (" 2263: \t\t<color>".$insertlist{"$tag.color"}."</color>"); 2264: } 2265: if (defined($insertlist{"$tag.function"})) { 2266: print XML (" 2267: \t\t<insert_sub>".$insertlist{"$tag.function"}."</insert_sub>"); 2268: } 2269: if (defined($insertlist{"$tag.show"}) 2270: && $insertlist{"$tag.show"} ne 'yes') { 2271: print XML (" 2272: \t\t<show>".$insertlist{"$tag.show"}."</show>"); 2273: } 2274: if (defined($insertlist{"$tag.helpfile"})) { 2275: print XML (" 2276: \t\t<help> 2277: \t\t\t<file>".$insertlist{"$tag.helpfile"}."</file>"); 2278: if ($insertlist{"$tag.helpdesc"} ne '') { 2279: print XML (" 2280: \t\t\t<description>".$insertlist{"$tag.helpdesc"}."</description>"); 2281: } 2282: print XML (" 2283: \t\t</help>"); 2284: } 2285: if (defined($insertlist{"$tag.which"})) { 2286: print XML (" 2287: \t\t<allow>".join(',',sort(@{ $insertlist{"$tag.which"} }))."</allow>"); 2288: } 2289: print XML (" 2290: \t</tag>"); 2291: $i++; 2292: } 2293: print XML ("\n</insertlist>\n"); 2294: close(XML); 2295: } 2296: 2297: sub description { 2298: my ($token)=@_; 2299: my $tag = &get_tag($token); 2300: return $insertlist{$tag.'.description'}; 2301: } 2302: 2303: # Returns a list containing the help file, and the description 2304: sub helpinfo { 2305: my ($token)=@_; 2306: my $tag = &get_tag($token); 2307: return ($insertlist{$tag.'.helpfile'}, &mt($insertlist{$tag.'.helpdesc'})); 2308: } 2309: 2310: sub get_tag { 2311: my ($token)=@_; 2312: my $tagnum; 2313: my $tag=$token->[1]; 2314: foreach my $namespace (reverse(@Apache::lonxml::namespace)) { 2315: my $testtag = $namespace.'::'.$tag; 2316: $tagnum = $insertlist{"$testtag.num"}; 2317: last if (defined($tagnum)); 2318: } 2319: if (!defined($tagnum)) { 2320: $tagnum = $Apache::lonxml::insertlist{"$tag.num"}; 2321: } 2322: return $insertlist{"$tagnum.tag"}; 2323: } 2324: 2325: ############################################################ 2326: # PDF-FORM-METHODS 2327: 2328: =pod 2329: 2330: =item &print_pdf_radiobutton(fieldname, value) 2331: 2332: Returns a latexline to generate a PDF-Form-Radiobutton. 2333: Note: Radiobuttons with equal names are automaticly grouped 2334: in a selection-group. 2335: 2336: $fieldname: PDF internalname of the radiobutton(group) 2337: $value: Value of radiobutton 2338: 2339: =cut 2340: sub print_pdf_radiobutton { 2341: my ($fieldname, $value) = @_; 2342: return '\radioButton[\symbolchoice{circle}]{' 2343: .$fieldname.'}{10bp}{10bp}{'.$value.'}'; 2344: } 2345: 2346: 2347: =pod 2348: 2349: =item &print_pdf_start_combobox(fieldname) 2350: 2351: Starts a latexline to generate a PDF-Form-Combobox with text. 2352: 2353: $fieldname: PDF internal name of the Combobox 2354: 2355: =cut 2356: sub print_pdf_start_combobox { 2357: my $result; 2358: my ($fieldName) = @_; 2359: $result .= '\begin{tabularx}{\textwidth}{p{2.5cm}X}'."\n"; 2360: $result .= '\comboBox[]{'.$fieldName.'}{2.3cm}{14bp}{'; # 2361: 2362: return $result; 2363: } 2364: 2365: 2366: =pod 2367: 2368: =item &print_pdf_add_combobox_option(options) 2369: 2370: Generates a latexline to add Options to a PDF-Form-ComboBox. 2371: 2372: $option: PDF internal name of the Combobox-Option 2373: 2374: =cut 2375: sub print_pdf_add_combobox_option { 2376: 2377: my $result; 2378: my ($option) = @_; 2379: 2380: $result .= '('.$option.')'; 2381: 2382: return $result; 2383: } 2384: 2385: 2386: =pod 2387: 2388: =item &print_pdf_end_combobox(text) { 2389: 2390: Returns latexcode to end a PDF-Form-Combobox with text. 2391: 2392: =cut 2393: sub print_pdf_end_combobox { 2394: my $result; 2395: my ($text) = @_; 2396: 2397: $result .= '}&'.$text."\\\\\n"; 2398: $result .= '\end{tabularx}' . "\n"; 2399: $result .= '\hspace{2mm}' . "\n"; 2400: return $result; 2401: } 2402: 2403: 2404: =pod 2405: 2406: =item &print_pdf_hiddenField(fieldname, user, domain) 2407: 2408: Returns a latexline to generate a PDF-Form-hiddenField with userdata. 2409: 2410: $fieldname label for hiddentextfield 2411: $user: name of user 2412: $domain: domain of user 2413: 2414: =cut 2415: sub print_pdf_hiddenfield { 2416: my $result; 2417: my ($fieldname, $user, $domain) = @_; 2418: 2419: $result .= '\textField [\F{\FHidden}\F{-\FPrint}\V{'.$domain.'&'.$user.'}]{'.$fieldname.'}{0in}{0in}'."\n"; 2420: 2421: return $result; 2422: } 2423: 2424: 1; 2425: __END__ 2426: