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- utf-8 can do some funk-ass things to Perl
1: # The LearningOnline Network with CAPA 2: # XML Parser Module 3: # 4: # $Id: lonxml.pm,v 1.314 2004/03/30 07:16:24 albertel 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: # last modified 06/26/00 by Alexander Sakharuk 40: # 11/6 Gerd Kortemeyer 41: # 6/1/1 Gerd Kortemeyer 42: # 2/21,3/13 Guy 43: # 3/29,5/4 Gerd Kortemeyer 44: # 5/26 Gerd Kortemeyer 45: # 5/27 H. K. Ng 46: # 6/2,6/3,6/8,6/9 Gerd Kortemeyer 47: # 6/12,6/13 H. K. Ng 48: # 6/16 Gerd Kortemeyer 49: # 7/27 H. K. Ng 50: # 8/7,8/9,8/10,8/11,8/15,8/16,8/17,8/18,8/20,8/23,8/24 Gerd Kortemeyer 51: # Guy Albertelli 52: # 9/26 Gerd Kortemeyer 53: # Dec Guy Albertelli 54: # YEAR=2002 55: # 1/1 Gerd Kortemeyer 56: # 1/2 Matthew Hall 57: # 1/3 Gerd Kortemeyer 58: # 59: 60: package Apache::lonxml; 61: use vars 62: qw(@pwd @outputstack $redirection $import @extlinks $metamode $evaluate %insertlist @namespace $prevent_entity_encode $errorcount $warningcount); 63: use strict; 64: use HTML::LCParser(); 65: use HTML::TreeBuilder(); 66: use HTML::Entities(); 67: use Safe(); 68: use Safe::Hole(); 69: use Math::Cephes(); 70: use Math::Random(); 71: use Opcode(); 72: use POSIX qw(strftime); 73: 74: 75: sub register { 76: my ($space,@taglist) = @_; 77: foreach my $temptag (@taglist) { 78: push(@{ $Apache::lonxml::alltags{$temptag} },$space); 79: } 80: } 81: 82: sub deregister { 83: my ($space,@taglist) = @_; 84: foreach my $temptag (@taglist) { 85: my $tempspace = $Apache::lonxml::alltags{$temptag}[-1]; 86: if ($tempspace eq $space) { 87: pop(@{ $Apache::lonxml::alltags{$temptag} }); 88: } 89: } 90: #&printalltags(); 91: } 92: 93: use Apache::Constants qw(:common); 94: use Apache::lontexconvert(); 95: use Apache::style(); 96: use Apache::run(); 97: use Apache::londefdef(); 98: use Apache::scripttag(); 99: use Apache::languagetags(); 100: use Apache::edit(); 101: use Apache::inputtags(); 102: use Apache::outputtags(); 103: use Apache::lonnet(); 104: use Apache::File(); 105: use Apache::loncommon(); 106: use Apache::lonfeedback(); 107: use Apache::lonmsg(); 108: use Apache::loncacc(); 109: use Apache::lonlocal; 110: 111: #================================================== Main subroutine: xmlparse 112: #debugging control, to turn on debugging modify the correct handler 113: $Apache::lonxml::debug=0; 114: 115: # keeps count of the number of warnings and errors generated in a parse 116: $warningcount=0; 117: $errorcount=0; 118: 119: #path to the directory containing the file currently being processed 120: @pwd=(); 121: 122: #these two are used for capturing a subset of the output for later processing, 123: #don't touch them directly use &startredirection and &endredirection 124: @outputstack = (); 125: $redirection = 0; 126: 127: #controls wheter the <import> tag actually does 128: $import = 1; 129: @extlinks=(); 130: 131: # meta mode is a bit weird only some output is to be turned off 132: #<output> tag turns metamode off (defined in londefdef.pm) 133: $metamode = 0; 134: 135: # turns on and of run::evaluate actually derefencing var refs 136: $evaluate = 1; 137: 138: # data structure for eidt mode, determines what tags can go into what other tags 139: %insertlist=(); 140: 141: # stores the list of active tag namespaces 142: @namespace=(); 143: 144: # if 0 all high ASCII characters will be encoded into HTML Entities 145: $prevent_entity_encode=0; 146: 147: # has the dynamic menu been updated to know about this resource 148: $Apache::lonxml::registered=0; 149: 150: # a pointer the the Apache request object 151: $Apache::lonxml::request=''; 152: 153: # a problem number counter, and check on ether it is used 154: $Apache::lonxml::counter=1; 155: $Apache::lonxml::counter_changed=0; 156: 157: #internal check on whether to look at style defs 158: $Apache::lonxml::usestyle=1; 159: 160: #locations used to store the parameter string for style substitutions 161: $Apache::lonxml::style_values=''; 162: $Apache::lonxml::style_end_values=''; 163: 164: #array of ssi calls that need to occur after we are done parsing 165: @Apache::lonxml::ssi_info=(); 166: 167: #should we do the postag variable interpolation 168: $Apache::lonxml::post_evaluate=1; 169: 170: #a header message to emit in the case of any generated warning or errors 171: $Apache::lonxml::warnings_error_header=''; 172: 173: sub xmlbegin { 174: my $output=''; 175: if ($ENV{'browser.mathml'}) { 176: $output='<?xml version="1.0"?>' 177: .'<?xml-stylesheet type="text/css" href="/adm/MathML/mathml.css"?>' 178: .'<!DOCTYPE html SYSTEM "/adm/MathML/mathml.dtd" ' 179: .'[<!ENTITY mathns "http://www.w3.org/1998/Math/MathML">]>' 180: .'<html xmlns:math="http://www.w3.org/1998/Math/MathML" ' 181: .'xmlns="http://www.w3.org/TR/REC-html40">'; 182: } else { 183: $output='<html>'; 184: } 185: return $output; 186: } 187: 188: sub xmlend { 189: my $mode='xml'; 190: my $status='OPEN'; 191: if ($Apache::lonhomework::parsing_a_problem) { 192: $mode='problem'; 193: $status=$Apache::inputtags::status[-1]; 194: } 195: return &Apache::lonfeedback::list_discussion($mode,$status).'</html>'; 196: } 197: 198: sub tokeninputfield { 199: my $defhost=$Apache::lonnet::perlvar{'lonHostID'}; 200: $defhost=~tr/a-z/A-Z/; 201: return (<<ENDINPUTFIELD) 202: <script type="text/javascript"> 203: function updatetoken() { 204: var comp=new Array; 205: var barcode=unescape(document.tokeninput.barcode.value); 206: comp=barcode.split('*'); 207: if (typeof(comp[0])!="undefined") { 208: document.tokeninput.codeone.value=comp[0]; 209: } 210: if (typeof(comp[1])!="undefined") { 211: document.tokeninput.codetwo.value=comp[1]; 212: } 213: if (typeof(comp[2])!="undefined") { 214: comp[2]=comp[2].toUpperCase(); 215: document.tokeninput.codethree.value=comp[2]; 216: } 217: document.tokeninput.barcode.value=''; 218: } 219: </script> 220: <form method="post" name="tokeninput"> 221: <table border="2" bgcolor="#FFFFBB"> 222: <tr><th>DocID Checkin</th></tr> 223: <tr><td> 224: <table> 225: <tr> 226: <td>Scan in Barcode</td> 227: <td><input type="text" size="22" name="barcode" 228: onChange="updatetoken()"/></td> 229: </tr> 230: <tr><td><i>or</i> Type in DocID</td> 231: <td> 232: <input type="text" size="5" name="codeone" /> 233: <b><font size="+2">*</font></b> 234: <input type="text" size="5" name="codetwo" /> 235: <b><font size="+2">*</font></b> 236: <input type="text" size="10" name="codethree" value="$defhost" 237: onChange="this.value=this.value.toUpperCase()" /> 238: </td></tr> 239: </table> 240: </td></tr> 241: <tr><td><input type="submit" value="Check in DocID" /></td></tr> 242: </table> 243: </form> 244: ENDINPUTFIELD 245: } 246: 247: sub maketoken { 248: my ($symb,$tuname,$tudom,$tcrsid)=@_; 249: unless ($symb) { 250: $symb=&Apache::lonnet::symbread(); 251: } 252: unless ($tuname) { 253: $tuname=$ENV{'user.name'}; 254: $tudom=$ENV{'user.domain'}; 255: $tcrsid=$ENV{'request.course.id'}; 256: } 257: 258: return &Apache::lonnet::checkout($symb,$tuname,$tudom,$tcrsid); 259: } 260: 261: sub printtokenheader { 262: my ($target,$token,$tsymb,$tcrsid,$tudom,$tuname)=@_; 263: unless ($token) { return ''; } 264: 265: my ($symb,$courseid,$domain,$name) = &Apache::lonxml::whichuser(); 266: unless ($tsymb) { 267: $tsymb=$symb; 268: } 269: unless ($tuname) { 270: $tuname=$name; 271: $tudom=$domain; 272: $tcrsid=$courseid; 273: } 274: 275: my %reply=&Apache::lonnet::get('environment', 276: ['firstname','middlename','lastname','generation'], 277: $tudom,$tuname); 278: my $plainname=$reply{'firstname'}.' '. 279: $reply{'middlename'}.' '. 280: $reply{'lastname'}.' '. 281: $reply{'generation'}; 282: 283: if ($target eq 'web') { 284: my %idhash=&Apache::lonnet::idrget($tudom,($tuname)); 285: return 286: '<img align="right" src="/cgi-bin/barcode.png?encode='.$token.'" />'. 287: &mt('Checked out for').' '.$plainname. 288: '<br />'.&mt('User').': '.$tuname.' at '.$tudom. 289: '<br />'.&mt('ID').': '.$idhash{$tuname}. 290: '<br />'.&mt('CourseID').': '.$tcrsid. 291: '<br />'.&mt('Course').': '.$ENV{'course.'.$tcrsid.'.description'}. 292: '<br />'.&mt('DocID').': '.$token. 293: '<br />'.&mt('Time').': '.&Apache::lonlocal::locallocaltime().'<hr />'; 294: } else { 295: return $token; 296: } 297: } 298: 299: sub fontsettings() { 300: my $headerstring=''; 301: if (($ENV{'browser.os'} eq 'mac') && (!$ENV{'browser.mathml'})) { 302: $headerstring.= 303: '<meta Content-Type="text/html; charset=x-mac-roman">'; 304: } elsif (!$ENV{'browser.mathml'} && $ENV{'browser.unicode'}) { 305: $headerstring.= 306: '<meta http-equiv="Content-Type" content="text/html; charset=utf-8" />'; 307: } 308: return $headerstring; 309: } 310: 311: sub printalltags { 312: my $temp; 313: foreach $temp (sort keys %Apache::lonxml::alltags) { 314: &Apache::lonxml::debug("$temp -- ". 315: join(',',@{ $Apache::lonxml::alltags{$temp} })); 316: } 317: } 318: 319: sub xmlparse { 320: my ($request,$target,$content_file_string,$safeinit,%style_for_target) = @_; 321: 322: &setup_globals($request,$target); 323: &Apache::inputtags::initialize_inputtags(); 324: &Apache::outputtags::initialize_outputtags(); 325: &Apache::edit::initialize_edit(); 326: &Apache::londefdef::initialize_londefdef(); 327: 328: # 329: # do we have a course style file? 330: # 331: 332: if ($ENV{'request.course.id'} && $ENV{'request.state'} ne 'construct') { 333: my $bodytext= 334: $ENV{'course.'.$ENV{'request.course.id'}.'.default_xml_style'}; 335: if ($bodytext) { 336: my $location=&Apache::lonnet::filelocation('',$bodytext); 337: my $styletext=&Apache::lonnet::getfile($location); 338: if ($styletext ne '-1') { 339: %style_for_target = (%style_for_target, 340: &Apache::style::styleparser($target,$styletext)); 341: } 342: } 343: } elsif ($ENV{'construct.style'} && ($ENV{'request.state'} eq 'construct')) { 344: my $location=&Apache::lonnet::filelocation('',$ENV{'construct.style'}); 345: my $styletext=&Apache::lonnet::getfile($location); 346: if ($styletext ne '-1') { 347: %style_for_target = (%style_for_target, 348: &Apache::style::styleparser($target,$styletext)); 349: } 350: } 351: #&printalltags(); 352: my @pars = (); 353: my $pwd=$ENV{'request.filename'}; 354: $pwd =~ s:/[^/]*$::; 355: &newparser(\@pars,\$content_file_string,$pwd); 356: 357: my $safeeval = new Safe; 358: my $safehole = new Safe::Hole; 359: &init_safespace($target,$safeeval,$safehole,$safeinit); 360: #-------------------- Redefinition of the target in the case of compound target 361: 362: ($target, my @tenta) = split('&&',$target); 363: 364: my @stack = (); 365: my @parstack = (); 366: &initdepth; 367: 368: my $finaloutput = &inner_xmlparse($target,\@stack,\@parstack,\@pars, 369: $safeeval,\%style_for_target); 370: 371: if ($ENV{'request.uri'}) { 372: &writeallows($ENV{'request.uri'}); 373: } 374: &do_registered_ssi(); 375: if ($Apache::lonxml::counter_changed) { &store_counter() } 376: return $finaloutput; 377: } 378: 379: sub htmlclean { 380: my ($raw,$full)=@_; 381: 382: my $tree = HTML::TreeBuilder->new; 383: $tree->ignore_unknown(0); 384: 385: $tree->parse($raw); 386: 387: my $output= $tree->as_HTML(undef,' '); 388: 389: $output=~s/\<(br|hr|img|meta|allow)(.*?)\>/\<$1$2 \/\>/gis; 390: $output=~s/\<\/(br|hr|img|meta|allow)\>//gis; 391: unless ($full) { 392: $output=~s/\<[\/]*(body|head|html)\>//gis; 393: } 394: 395: $tree = $tree->delete; 396: 397: return $output; 398: } 399: 400: sub latex_special_symbols { 401: my ($string,$where)=@_; 402: if ($where eq 'header') { 403: $string =~ s/(\\|_|\^)/ /g; 404: $string =~ s/(\$|%|\{|\})/\\$1/g; 405: $string =~ s/_/ /g; 406: $string=&Apache::lonprintout::character_chart($string); 407: # any & or # leftover should be safe to just escape 408: $string=~s/([^\\])\&/$1\\\&/g; 409: $string=~s/([^\\])\#/$1\\\#/g; 410: } else { 411: $string=~s/\\/\\ensuremath{\\backslash}/g; 412: $string=~s/([^\\]|^)\%/$1\\\%/g; 413: $string=~s/([^\\]|^)(\$|_)/$1\\$2/g; 414: $string=~s/\$\$/\$\\\$/g; 415: $string=~s/\#\#/\#\\\#/g; 416: $string=~s/([^\\]|^)(\~|\^)/$1\\$2\\strut /g; 417: $string=~s/(>|<)/\\ensuremath\{$1\}/g; #more or less 418: $string=&Apache::lonprintout::character_chart($string); 419: # any & or # leftover should be safe to just escape 420: $string=~s/([^\\]|^)\&/$1\\\&/g; 421: $string=~s/([^\\]|^)\#/$1\\\#/g; 422: #single { or } How to escape? 423: } 424: return $string; 425: } 426: 427: sub inner_xmlparse { 428: my ($target,$stack,$parstack,$pars,$safeeval,$style_for_target)=@_; 429: my $finaloutput = ''; 430: my $result; 431: my $token; 432: my $dontpop=0; 433: while ( $#$pars > -1 ) { 434: while ($token = $$pars['-1']->get_token) { 435: if (($token->[0] eq 'T') || ($token->[0] eq 'C') ) { 436: if ($metamode<1) { 437: my $text=$token->[1]; 438: if ($token->[0] eq 'C' && $target eq 'tex') { 439: $text = ''; 440: # $text = '%'.$text."\n"; 441: } 442: $result.=$text; 443: } 444: } elsif (($token->[0] eq 'D')) { 445: if ($metamode<1 && $target eq 'web') { 446: my $text=$token->[1]; 447: $result.=$text; 448: } 449: } elsif ($token->[0] eq 'PI') { 450: if ($metamode<1 && $target eq 'web') { 451: $result=$token->[2]; 452: } 453: } elsif ($token->[0] eq 'S') { 454: # add tag to stack 455: push (@$stack,$token->[1]); 456: # add parameters list to another stack 457: push (@$parstack,&parstring($token)); 458: &increasedepth($token); 459: if ($Apache::lonxml::usestyle && 460: exists($$style_for_target{$token->[1]})) { 461: $Apache::lonxml::usestyle=0; 462: my $string=$$style_for_target{$token->[1]}. 463: '<LONCAPA_INTERNAL_TURN_STYLE_ON />'; 464: &Apache::lonxml::newparser($pars,\$string); 465: $Apache::lonxml::style_values=$$parstack[-1]; 466: $Apache::lonxml::style_end_values=$$parstack[-1]; 467: } else { 468: $result = &callsub("start_$token->[1]", $target, $token, $stack, 469: $parstack, $pars, $safeeval, $style_for_target); 470: } 471: } elsif ($token->[0] eq 'E') { 472: if ($Apache::lonxml::usestyle && 473: exists($$style_for_target{'/'."$token->[1]"})) { 474: $Apache::lonxml::usestyle=0; 475: my $string=$$style_for_target{'/'.$token->[1]}. 476: '<LONCAPA_INTERNAL_TURN_STYLE_ON end="'.$token->[1].'" />'; 477: &Apache::lonxml::newparser($pars,\$string); 478: $Apache::lonxml::style_values=$Apache::lonxml::style_end_values; 479: $Apache::lonxml::style_end_values=''; 480: $dontpop=1; 481: } else { 482: #clear out any tags that didn't end 483: while ($token->[1] ne $$stack['-1'] && ($#$stack > -1)) { 484: my $lasttag=$$stack[-1]; 485: if ($token->[1] =~ /^$lasttag$/i) { 486: &Apache::lonxml::warning('Using tag </'.$token->[1].'> on line '.$token->[3].' as end tag to <'.$$stack[-1].'>'); 487: last; 488: } else { 489: &Apache::lonxml::warning('Found tag </'.$token->[1].'> on line '.$token->[3].' when looking for </'.$$stack[-1].'> in file'); 490: &end_tag($stack,$parstack,$token); 491: } 492: } 493: $result = &callsub("end_$token->[1]", $target, $token, $stack, 494: $parstack, $pars,$safeeval, $style_for_target); 495: } 496: } else { 497: &Apache::lonxml::error("Unknown token event :$token->[0]:$token->[1]:"); 498: } 499: #evaluate variable refs in result 500: if ($Apache::lonxml::post_evaluate &&$result ne "") { 501: my $extras; 502: if (!$Apache::lonxml::usestyle) { 503: $extras=$Apache::lonxml::style_values; 504: } 505: if ( $#$parstack > -1 ) { 506: $result=&Apache::run::evaluate($result,$safeeval,$extras.$$parstack[-1]); 507: } else { 508: $result= &Apache::run::evaluate($result,$safeeval,$extras); 509: } 510: } 511: $Apache::lonxml::post_evaluate=1; 512: 513: if (($token->[0] eq 'T') || ($token->[0] eq 'C') || ($token->[0] eq 'D') ) { 514: #Style file definitions should be correct 515: if ($target eq 'tex' && ($Apache::lonxml::usestyle)) { 516: $result=&latex_special_symbols($result); 517: } 518: } 519: 520: # Encode any high ASCII characters 521: # if (!$Apache::lonxml::prevent_entity_encode) { 522: # $result=&HTML::Entities::encode($result,"\200-\377"); 523: # } 524: if ($Apache::lonxml::redirection) { 525: $Apache::lonxml::outputstack['-1'] .= $result; 526: } else { 527: $finaloutput.=$result; 528: } 529: $result = ''; 530: 531: if ($token->[0] eq 'E' && !$dontpop) { 532: &end_tag($stack,$parstack,$token); 533: } 534: $dontpop=0; 535: } 536: if ($#$pars > -1) { 537: pop @$pars; 538: pop @Apache::lonxml::pwd; 539: } 540: } 541: 542: # if ($target eq 'meta') { 543: # $finaloutput.=&endredirection; 544: # } 545: 546: 547: if (($ENV{'QUERY_STRING'}) && ($target eq 'web')) { 548: $finaloutput=&afterburn($finaloutput); 549: } 550: return $finaloutput; 551: } 552: 553: sub callsub { 554: my ($sub,$target,$token,$tagstack,$parstack,$parser,$safeeval,$style)=@_; 555: my $currentstring=''; 556: my $nodefault; 557: { 558: my $sub1; 559: no strict 'refs'; 560: my $tag=$token->[1]; 561: # get utterly rid of extended html tags 562: if ($tag=~/^x\-/i) { return ''; } 563: my $space=$Apache::lonxml::alltags{$tag}[-1]; 564: if (!$space) { 565: $tag=~tr/A-Z/a-z/; 566: $sub=~tr/A-Z/a-z/; 567: $space=$Apache::lonxml::alltags{$tag}[-1] 568: } 569: 570: my $deleted=0; 571: $Apache::lonxml::curdepth=join('_',@Apache::lonxml::depthcounter); 572: if (($token->[0] eq 'S') && ($target eq 'modified')) { 573: $deleted=&Apache::edit::handle_delete($space,$target,$token,$tagstack, 574: $parstack,$parser,$safeeval, 575: $style); 576: } 577: if (!$deleted) { 578: if ($space) { 579: #&Apache::lonxml::debug("Calling sub $sub in $space $metamode"); 580: $sub1="$space\:\:$sub"; 581: ($currentstring,$nodefault) = &$sub1($target,$token,$tagstack, 582: $parstack,$parser,$safeeval, 583: $style); 584: } else { 585: #&Apache::lonxml::debug("NOT Calling sub $sub in $space $metamode"); 586: if ($metamode <1) { 587: if (defined($token->[4]) && ($metamode < 1)) { 588: $currentstring = $token->[4]; 589: } else { 590: $currentstring = $token->[2]; 591: } 592: } 593: } 594: # &Apache::lonxml::debug("nodefalt:$nodefault:"); 595: if ($currentstring eq '' && $nodefault eq '') { 596: if ($target eq 'edit') { 597: #&Apache::lonxml::debug("doing default edit for $token->[1]"); 598: if ($token->[0] eq 'S') { 599: $currentstring = &Apache::edit::tag_start($target,$token); 600: } elsif ($token->[0] eq 'E') { 601: $currentstring = &Apache::edit::tag_end($target,$token); 602: } 603: } elsif ($target eq 'modified') { 604: if ($token->[0] eq 'S') { 605: $currentstring = $token->[4]; 606: $currentstring.=&Apache::edit::handle_insert(); 607: } elsif ($token->[0] eq 'E') { 608: $currentstring = $token->[2]; 609: $currentstring.=&Apache::edit::handle_insertafter($token->[1]); 610: } else { 611: $currentstring = $token->[2]; 612: } 613: } 614: } 615: } 616: use strict 'refs'; 617: } 618: return $currentstring; 619: } 620: 621: sub setup_globals { 622: my ($request,$target)=@_; 623: $Apache::lonxml::request=$request; 624: $Apache::lonxml::registered = 0; 625: $errorcount=0; 626: $warningcount=0; 627: $Apache::lonxml::default_homework_loaded=0; 628: $Apache::lonxml::usestyle=1; 629: &init_counter(); 630: @Apache::lonxml::pwd=(); 631: @Apache::lonxml::extlinks=(); 632: @Apache::lonxml::ssi_info=(); 633: $Apache::lonxml::post_evaluate=1; 634: $Apache::lonxml::warnings_error_header=''; 635: if ($target eq 'meta') { 636: $Apache::lonxml::redirection = 0; 637: $Apache::lonxml::metamode = 1; 638: $Apache::lonxml::evaluate = 1; 639: $Apache::lonxml::import = 0; 640: } elsif ($target eq 'answer') { 641: $Apache::lonxml::redirection = 0; 642: $Apache::lonxml::metamode = 1; 643: $Apache::lonxml::evaluate = 1; 644: $Apache::lonxml::import = 1; 645: } elsif ($target eq 'grade') { 646: &startredirection; 647: $Apache::lonxml::metamode = 0; 648: $Apache::lonxml::evaluate = 1; 649: $Apache::lonxml::import = 1; 650: } elsif ($target eq 'modified') { 651: $Apache::lonxml::redirection = 0; 652: $Apache::lonxml::metamode = 0; 653: $Apache::lonxml::evaluate = 0; 654: $Apache::lonxml::import = 0; 655: } elsif ($target eq 'edit') { 656: $Apache::lonxml::redirection = 0; 657: $Apache::lonxml::metamode = 0; 658: $Apache::lonxml::evaluate = 0; 659: $Apache::lonxml::import = 0; 660: } elsif ($target eq 'analyze') { 661: $Apache::lonxml::redirection = 0; 662: $Apache::lonxml::metamode = 0; 663: $Apache::lonxml::evaluate = 1; 664: $Apache::lonxml::import = 1; 665: } else { 666: $Apache::lonxml::redirection = 0; 667: $Apache::lonxml::metamode = 0; 668: $Apache::lonxml::evaluate = 1; 669: $Apache::lonxml::import = 1; 670: } 671: } 672: 673: sub init_safespace { 674: my ($target,$safeeval,$safehole,$safeinit) = @_; 675: $safeeval->permit("entereval"); 676: $safeeval->permit(":base_math"); 677: $safeeval->permit("sort"); 678: $safeeval->permit("time"); 679: $safeeval->deny(":base_io"); 680: $safehole->wrap(\&Apache::scripttag::xmlparse,$safeeval,'&xmlparse'); 681: $safehole->wrap(\&Apache::outputtags::multipart,$safeeval,'&multipart'); 682: $safehole->wrap(\&Apache::lonnet::EXT,$safeeval,'&EXT'); 683: 684: $safehole->wrap(\&Math::Cephes::asin,$safeeval,'&asin'); 685: $safehole->wrap(\&Math::Cephes::acos,$safeeval,'&acos'); 686: $safehole->wrap(\&Math::Cephes::atan,$safeeval,'&atan'); 687: $safehole->wrap(\&Math::Cephes::sinh,$safeeval,'&sinh'); 688: $safehole->wrap(\&Math::Cephes::cosh,$safeeval,'&cosh'); 689: $safehole->wrap(\&Math::Cephes::tanh,$safeeval,'&tanh'); 690: $safehole->wrap(\&Math::Cephes::asinh,$safeeval,'&asinh'); 691: $safehole->wrap(\&Math::Cephes::acosh,$safeeval,'&acosh'); 692: $safehole->wrap(\&Math::Cephes::atanh,$safeeval,'&atanh'); 693: $safehole->wrap(\&Math::Cephes::erf,$safeeval,'&erf'); 694: $safehole->wrap(\&Math::Cephes::erfc,$safeeval,'&erfc'); 695: $safehole->wrap(\&Math::Cephes::j0,$safeeval,'&j0'); 696: $safehole->wrap(\&Math::Cephes::j1,$safeeval,'&j1'); 697: $safehole->wrap(\&Math::Cephes::jn,$safeeval,'&jn'); 698: $safehole->wrap(\&Math::Cephes::jv,$safeeval,'&jv'); 699: $safehole->wrap(\&Math::Cephes::y0,$safeeval,'&y0'); 700: $safehole->wrap(\&Math::Cephes::y1,$safeeval,'&y1'); 701: $safehole->wrap(\&Math::Cephes::yn,$safeeval,'&yn'); 702: $safehole->wrap(\&Math::Cephes::yv,$safeeval,'&yv'); 703: 704: $safehole->wrap(\&Math::Cephes::bdtr ,$safeeval,'&bdtr' ); 705: $safehole->wrap(\&Math::Cephes::bdtrc ,$safeeval,'&bdtrc' ); 706: $safehole->wrap(\&Math::Cephes::bdtri ,$safeeval,'&bdtri' ); 707: $safehole->wrap(\&Math::Cephes::btdtr ,$safeeval,'&btdtr' ); 708: $safehole->wrap(\&Math::Cephes::chdtr ,$safeeval,'&chdtr' ); 709: $safehole->wrap(\&Math::Cephes::chdtrc,$safeeval,'&chdtrc'); 710: $safehole->wrap(\&Math::Cephes::chdtri,$safeeval,'&chdtri'); 711: $safehole->wrap(\&Math::Cephes::fdtr ,$safeeval,'&fdtr' ); 712: $safehole->wrap(\&Math::Cephes::fdtrc ,$safeeval,'&fdtrc' ); 713: $safehole->wrap(\&Math::Cephes::fdtri ,$safeeval,'&fdtri' ); 714: $safehole->wrap(\&Math::Cephes::gdtr ,$safeeval,'&gdtr' ); 715: $safehole->wrap(\&Math::Cephes::gdtrc ,$safeeval,'&gdtrc' ); 716: $safehole->wrap(\&Math::Cephes::nbdtr ,$safeeval,'&nbdtr' ); 717: $safehole->wrap(\&Math::Cephes::nbdtrc,$safeeval,'&nbdtrc'); 718: $safehole->wrap(\&Math::Cephes::nbdtri,$safeeval,'&nbdtri'); 719: $safehole->wrap(\&Math::Cephes::ndtr ,$safeeval,'&ndtr' ); 720: $safehole->wrap(\&Math::Cephes::ndtri ,$safeeval,'&ndtri' ); 721: $safehole->wrap(\&Math::Cephes::pdtr ,$safeeval,'&pdtr' ); 722: $safehole->wrap(\&Math::Cephes::pdtrc ,$safeeval,'&pdtrc' ); 723: $safehole->wrap(\&Math::Cephes::pdtri ,$safeeval,'&pdtri' ); 724: $safehole->wrap(\&Math::Cephes::stdtr ,$safeeval,'&stdtr' ); 725: $safehole->wrap(\&Math::Cephes::stdtri,$safeeval,'&stdtri'); 726: 727: # $safehole->wrap(\&Math::Cephes::new_fract,$safeeval,'&new_fract'); 728: # $safehole->wrap(\&Math::Cephes::radd,$safeeval,'&radd'); 729: # $safehole->wrap(\&Math::Cephes::rsub,$safeeval,'&rsub'); 730: # $safehole->wrap(\&Math::Cephes::rmul,$safeeval,'&rmul'); 731: # $safehole->wrap(\&Math::Cephes::rdiv,$safeeval,'&rdiv'); 732: # $safehole->wrap(\&Math::Cephes::euclid,$safeeval,'&euclid'); 733: 734: $safehole->wrap(\&Math::Random::random_beta,$safeeval,'&math_random_beta'); 735: $safehole->wrap(\&Math::Random::random_chi_square,$safeeval,'&math_random_chi_square'); 736: $safehole->wrap(\&Math::Random::random_exponential,$safeeval,'&math_random_exponential'); 737: $safehole->wrap(\&Math::Random::random_f,$safeeval,'&math_random_f'); 738: $safehole->wrap(\&Math::Random::random_gamma,$safeeval,'&math_random_gamma'); 739: $safehole->wrap(\&Math::Random::random_multivariate_normal,$safeeval,'&math_random_multivariate_normal'); 740: $safehole->wrap(\&Math::Random::random_multinomial,$safeeval,'&math_random_multinomial'); 741: $safehole->wrap(\&Math::Random::random_noncentral_chi_square,$safeeval,'&math_random_noncentral_chi_square'); 742: $safehole->wrap(\&Math::Random::random_noncentral_f,$safeeval,'&math_random_noncentral_f'); 743: $safehole->wrap(\&Math::Random::random_normal,$safeeval,'&math_random_normal'); 744: $safehole->wrap(\&Math::Random::random_permutation,$safeeval,'&math_random_permutation'); 745: $safehole->wrap(\&Math::Random::random_permuted_index,$safeeval,'&math_random_permuted_index'); 746: $safehole->wrap(\&Math::Random::random_uniform,$safeeval,'&math_random_uniform'); 747: $safehole->wrap(\&Math::Random::random_poisson,$safeeval,'&math_random_poisson'); 748: $safehole->wrap(\&Math::Random::random_uniform_integer,$safeeval,'&math_random_uniform_integer'); 749: $safehole->wrap(\&Math::Random::random_negative_binomial,$safeeval,'&math_random_negative_binomial'); 750: $safehole->wrap(\&Math::Random::random_binomial,$safeeval,'&math_random_binomial'); 751: $safehole->wrap(\&Math::Random::random_seed_from_phrase,$safeeval,'&random_seed_from_phrase'); 752: $safehole->wrap(\&Math::Random::random_set_seed_from_phrase,$safeeval,'&random_set_seed_from_phrase'); 753: $safehole->wrap(\&Math::Random::random_get_seed,$safeeval,'&random_get_seed'); 754: $safehole->wrap(\&Math::Random::random_set_seed,$safeeval,'&random_set_seed'); 755: $safehole->wrap(\&Apache::lonxml::error,$safeeval,'&LONCAPA_INTERNAL_ERROR'); 756: $safehole->wrap(\&Apache::lonxml::debug,$safeeval,'&LONCAPA_INTERNAL_DEBUG'); 757: 758: #need to inspect this class of ops 759: # $safeeval->deny(":base_orig"); 760: $safeinit .= ';$external::target="'.$target.'";'; 761: my $rndseed; 762: my ($symb,$courseid,$domain,$name) = &Apache::lonxml::whichuser(); 763: $rndseed=&Apache::lonnet::rndseed($symb,$courseid,$domain,$name); 764: $safeinit .= ';$external::randomseed='.$rndseed.';'; 765: &Apache::lonxml::debug("Setting rndseed to $rndseed"); 766: &Apache::run::run($safeinit,$safeeval); 767: 768: my $subroutine=<<'EVALUATESUB'; 769: sub __LC_INTERNAL_EVALUATE__ { 770: my ($__LC__a,$__LC__b,$__LC__c)=@_; 771: my $__LC__prefix; 772: while(1){ 773: { 774: use strict; 775: no strict "vars"; 776: if (eval(defined(eval($__LC__a.$__LC__b)))) { 777: return $__LC__prefix.eval($__LC__a.$__LC__b.$__LC__c); 778: } 779: } 780: $__LC__prefix.=substr($__LC__a,0,1,""); 781: if ($__LC__a!~/^(\$|&|\#)/) { last; } 782: } 783: return $__LC__prefix.$__LC__a.$__LC__b.$__LC__c; 784: } 785: EVALUATESUB 786: $safeeval->permit("require"); 787: $safeeval->reval($subroutine); 788: $safeeval->deny("require"); 789: } 790: 791: sub default_homework_load { 792: my ($safeeval)=@_; 793: &Apache::lonxml::debug('Loading default_homework'); 794: my $default=&Apache::lonnet::getfile('/home/httpd/html/res/adm/includes/default_homework.lcpm'); 795: if ($default eq -1) { 796: &Apache::lonxml::error("<b>Unable to find <i>default_homework.lcpm</i></b>"); 797: } else { 798: &Apache::run::run($default,$safeeval); 799: $Apache::lonxml::default_homework_loaded=1; 800: } 801: } 802: 803: sub startredirection { 804: $Apache::lonxml::redirection++; 805: push (@Apache::lonxml::outputstack, ''); 806: } 807: 808: sub endredirection { 809: if (!$Apache::lonxml::redirection) { 810: &Apache::lonxml::error("Endredirection was called, before a startredirection, perhaps you have unbalanced tags. Some debuging information:".join ":",caller); 811: return ''; 812: } 813: $Apache::lonxml::redirection--; 814: pop @Apache::lonxml::outputstack; 815: } 816: 817: sub end_tag { 818: my ($tagstack,$parstack,$token)=@_; 819: pop(@$tagstack); 820: pop(@$parstack); 821: &decreasedepth($token); 822: } 823: 824: sub initdepth { 825: @Apache::lonxml::depthcounter=(); 826: $Apache::lonxml::depth=-1; 827: $Apache::lonxml::olddepth=-1; 828: } 829: 830: sub increasedepth { 831: my ($token) = @_; 832: $Apache::lonxml::depth++; 833: $Apache::lonxml::depthcounter[$Apache::lonxml::depth]++; 834: if ($Apache::lonxml::depthcounter[$Apache::lonxml::depth]==1) { 835: $Apache::lonxml::olddepth=$Apache::lonxml::depth; 836: } 837: my $curdepth=join('_',@Apache::lonxml::depthcounter); 838: &Apache::lonxml::debug("s $Apache::lonxml::depth : $Apache::lonxml::olddepth : $curdepth : $token->[1]\n"); 839: #print "<br />s $Apache::lonxml::depth : $Apache::lonxml::olddepth : $curdepth : $token->[1]\n"; 840: } 841: 842: sub decreasedepth { 843: my ($token) = @_; 844: $Apache::lonxml::depth--; 845: if ($Apache::lonxml::depth<$Apache::lonxml::olddepth-1) { 846: $#Apache::lonxml::depthcounter--; 847: $Apache::lonxml::olddepth=$Apache::lonxml::depth+1; 848: } 849: if ( $Apache::lonxml::depth < -1) { 850: &Apache::lonxml::warning(&mt("Missing tags, unable to properly run file.")); 851: $Apache::lonxml::depth='-1'; 852: } 853: my $curdepth=join('_',@Apache::lonxml::depthcounter); 854: &Apache::lonxml::debug("e $Apache::lonxml::depth : $Apache::lonxml::olddepth : $token->[1] : $curdepth\n"); 855: #print "<br />e $Apache::lonxml::depth : $Apache::lonxml::olddepth : $token->[1] : $curdepth\n"; 856: } 857: 858: sub get_all_text_unbalanced { 859: #there is a copy of this in lonpublisher.pm 860: my($tag,$pars)= @_; 861: my $token; 862: my $result=''; 863: $tag='<'.$tag.'>'; 864: while ($token = $$pars[-1]->get_token) { 865: if (($token->[0] eq 'T')||($token->[0] eq 'C')||($token->[0] eq 'D')) { 866: $result.=$token->[1]; 867: } elsif ($token->[0] eq 'PI') { 868: $result.=$token->[2]; 869: } elsif ($token->[0] eq 'S') { 870: $result.=$token->[4]; 871: } elsif ($token->[0] eq 'E') { 872: $result.=$token->[2]; 873: } 874: if ($result =~ /(.*)\Q$tag\E(.*)/s) { 875: &Apache::lonxml::debug('Got a winner with leftovers ::'.$2); 876: &Apache::lonxml::debug('Result is :'.$1); 877: $result=$1; 878: my $redo=$tag.$2; 879: &Apache::lonxml::newparser($pars,\$redo); 880: last; 881: } 882: } 883: return $result 884: } 885: 886: sub increment_counter { 887: my ($increment) = @_; 888: if (defined($increment) && $increment gt 0) { 889: $Apache::lonxml::counter+=$increment; 890: } else { 891: $Apache::lonxml::counter++; 892: } 893: $Apache::lonxml::counter_changed=1; 894: } 895: 896: sub init_counter { 897: if (defined($ENV{'form.counter'})) { 898: $Apache::lonxml::counter=$ENV{'form.counter'}; 899: $Apache::lonxml::counter_changed=0; 900: } else { 901: $Apache::lonxml::counter=1; 902: $Apache::lonxml::counter_changed=1; 903: } 904: } 905: 906: sub store_counter { 907: &Apache::lonnet::appenv(('form.counter' => $Apache::lonxml::counter)); 908: return ''; 909: } 910: 911: sub get_all_text { 912: my($tag,$pars,$style)= @_; 913: my $gotfullstack=1; 914: if (ref($pars) ne 'ARRAY') { 915: $gotfullstack=0; 916: $pars=[$pars]; 917: } 918: if (ref($style) ne 'HASH') { 919: $style={}; 920: } 921: my $depth=0; 922: my $token; 923: my $result=''; 924: if ( $tag =~ m:^/: ) { 925: my $tag=substr($tag,1); 926: #&Apache::lonxml::debug("have:$tag:"); 927: my $top_empty=0; 928: while (($depth >=0) && ($#$pars > -1) && (!$top_empty)) { 929: while (($depth >=0) && ($token = $$pars[-1]->get_token)) { 930: #&Apache::lonxml::debug("e token:$token->[0]:$depth:$token->[1]:".$#$pars.":".$#Apache::lonxml::pwd); 931: if (($token->[0] eq 'T')||($token->[0] eq 'C')||($token->[0] eq 'D')) { 932: $result.=$token->[1]; 933: } elsif ($token->[0] eq 'PI') { 934: $result.=$token->[2]; 935: } elsif ($token->[0] eq 'S') { 936: if ($token->[1] =~ /^$tag$/i) { $depth++; } 937: if ($token->[1] =~ /^LONCAPA_INTERNAL_TURN_STYLE_ON$/i) { $Apache::lonxml::usestyle=1; } 938: if ($token->[1] =~ /^LONCAPA_INTERNAL_TURN_STYLE_OFF$/i) { $Apache::lonxml::usestyle=0; } 939: $result.=$token->[4]; 940: } elsif ($token->[0] eq 'E') { 941: if ( $token->[1] =~ /^$tag$/i) { $depth--; } 942: #skip sending back the last end tag 943: if ($depth == 0 && exists($$style{'/'.$token->[1]}) && $Apache::lonxml::usestyle) { 944: my $string= 945: '<LONCAPA_INTERNAL_TURN_STYLE_OFF end="yes" />'. 946: $$style{'/'.$token->[1]}. 947: $token->[2]. 948: '<LONCAPA_INTERNAL_TURN_STYLE_ON />'; 949: &Apache::lonxml::newparser($pars,\$string); 950: #&Apache::lonxml::debug("reParsing $string"); 951: next; 952: } 953: if ($depth > -1) { 954: $result.=$token->[2]; 955: } else { 956: $$pars[-1]->unget_token($token); 957: } 958: } 959: } 960: if (($depth >=0) && ($#$pars == 0) ) { $top_empty=1; } 961: if (($depth >=0) && ($#$pars > 0) ) { 962: pop(@$pars); 963: pop(@Apache::lonxml::pwd); 964: } 965: } 966: if ($top_empty && $depth >= 0) { 967: #never found the end tag ran out of text, throw error send back blank 968: &error('Never found end tag for <'.$tag. 969: '> current string <pre>'. 970: &HTML::Entities::encode($result,'<>&"'). 971: '</pre>'); 972: if ($gotfullstack) { 973: my $newstring='</'.$tag.'>'.$result; 974: &Apache::lonxml::newparser($pars,\$newstring); 975: } 976: $result=''; 977: } 978: } else { 979: while ($#$pars > -1) { 980: while ($token = $$pars[-1]->get_token) { 981: #&Apache::lonxml::debug("s token:$token->[0]:$depth:$token->[1]"); 982: if (($token->[0] eq 'T')||($token->[0] eq 'C')|| 983: ($token->[0] eq 'D')) { 984: $result.=$token->[1]; 985: } elsif ($token->[0] eq 'PI') { 986: $result.=$token->[2]; 987: } elsif ($token->[0] eq 'S') { 988: if ( $token->[1] =~ /^$tag$/i) { 989: $$pars[-1]->unget_token($token); last; 990: } else { 991: $result.=$token->[4]; 992: } 993: if ($token->[1] =~ /^LONCAPA_INTERNAL_TURN_STYLE_ON$/i) { $Apache::lonxml::usestyle=1; } 994: if ($token->[1] =~ /^LONCAPA_INTERNAL_TURN_STYLE_OFF$/i) { $Apache::lonxml::usestyle=0; } 995: } elsif ($token->[0] eq 'E') { 996: $result.=$token->[2]; 997: } 998: } 999: if (($#$pars > 0) ) { 1000: pop(@$pars); 1001: pop(@Apache::lonxml::pwd); 1002: } else { last; } 1003: } 1004: } 1005: #&Apache::lonxml::debug("Exit:$result:"); 1006: return $result 1007: } 1008: 1009: sub newparser { 1010: my ($parser,$contentref,$dir) = @_; 1011: push (@$parser,HTML::LCParser->new($contentref)); 1012: $$parser['-1']->xml_mode('1'); 1013: if ( $dir eq '' ) { 1014: push (@Apache::lonxml::pwd, $Apache::lonxml::pwd[$#Apache::lonxml::pwd]); 1015: } else { 1016: push (@Apache::lonxml::pwd, $dir); 1017: } 1018: } 1019: 1020: sub parstring { 1021: my ($token) = @_; 1022: my $temp=''; 1023: foreach (@{$token->[3]}) { 1024: unless ($_=~/\W/) { 1025: my $val=$token->[2]->{$_}; 1026: $val =~ s/([\%\@\\\"\'])/\\$1/g; 1027: #if ($val =~ m/^[\%\@]/) { $val="\\".$val; } 1028: $temp .= "my \$$_=\"$val\";"; 1029: } 1030: } 1031: return $temp; 1032: } 1033: 1034: sub writeallows { 1035: unless ($#extlinks>=0) { return; } 1036: my $thisurl='/res/'.&Apache::lonnet::declutter(shift); 1037: if ($ENV{'httpref.'.$thisurl}) { 1038: $thisurl=$ENV{'httpref.'.$thisurl}; 1039: } 1040: my $thisdir=$thisurl; 1041: $thisdir=~s/\/[^\/]+$//; 1042: my %httpref=(); 1043: foreach (@extlinks) { 1044: $httpref{'httpref.'. 1045: &Apache::lonnet::hreflocation($thisdir,$_)}=$thisurl; 1046: } 1047: @extlinks=(); 1048: &Apache::lonnet::appenv(%httpref); 1049: } 1050: 1051: sub register_ssi { 1052: my ($url,%form)=@_; 1053: push (@Apache::lonxml::ssi_info,{'url'=>$url,'form'=>\%form}); 1054: return ''; 1055: } 1056: 1057: sub do_registered_ssi { 1058: foreach my $info (@Apache::lonxml::ssi_info) { 1059: my %form=%{ $info->{'form'}}; 1060: my $url=$info->{'url'}; 1061: &Apache::lonnet::ssi($url,%form); 1062: } 1063: } 1064: # 1065: # Afterburner handles anchors, highlights and links 1066: # 1067: sub afterburn { 1068: my $result=shift; 1069: &Apache::loncommon::get_unprocessed_cgi($ENV{'QUERY_STRING'}, 1070: ['highlight','anchor','link']); 1071: if ($ENV{'form.highlight'}) { 1072: foreach (split(/\,/,$ENV{'form.highlight'})) { 1073: my $anchorname=$_; 1074: my $matchthis=$anchorname; 1075: $matchthis=~s/\_+/\\s\+/g; 1076: $result=~s/($matchthis)/\<font color=\"red\"\>$1\<\/font\>/gs; 1077: } 1078: } 1079: if ($ENV{'form.link'}) { 1080: foreach (split(/\,/,$ENV{'form.link'})) { 1081: my ($anchorname,$linkurl)=split(/\>/,$_); 1082: my $matchthis=$anchorname; 1083: $matchthis=~s/\_+/\\s\+/g; 1084: $result=~s/($matchthis)/\<a href=\"$linkurl\"\>$1\<\/a\>/gs; 1085: } 1086: } 1087: if ($ENV{'form.anchor'}) { 1088: my $anchorname=$ENV{'form.anchor'}; 1089: my $matchthis=$anchorname; 1090: $matchthis=~s/\_+/\\s\+/g; 1091: $result=~s/($matchthis)/\<a name=\"$anchorname\"\>$1\<\/a\>/s; 1092: $result.=(<<"ENDSCRIPT"); 1093: <script type="text/javascript"> 1094: document.location.hash='$anchorname'; 1095: </script> 1096: ENDSCRIPT 1097: } 1098: return $result; 1099: } 1100: 1101: sub storefile { 1102: my ($file,$contents)=@_; 1103: &Apache::lonnet::correct_line_ends(\$contents); 1104: if (my $fh=Apache::File->new('>'.$file)) { 1105: print $fh $contents; 1106: $fh->close(); 1107: return 1; 1108: } else { 1109: &warning("Unable to save file $file"); 1110: return 0; 1111: } 1112: } 1113: 1114: sub createnewhtml { 1115: my $filecontents=(<<SIMPLECONTENT); 1116: <html> 1117: <head> 1118: <title> 1119: Title of Document Goes Here 1120: </title> 1121: </head> 1122: <body bgcolor="#FFFFFF"> 1123: 1124: Body of Document Goes Here 1125: 1126: </body> 1127: </html> 1128: SIMPLECONTENT 1129: return $filecontents; 1130: } 1131: 1132: sub createnewsty { 1133: my $filecontents=(<<SIMPLECONTENT); 1134: <definetag name=""> 1135: <render> 1136: <web></web> 1137: <tex></tex> 1138: </render> 1139: </definetag> 1140: SIMPLECONTENT 1141: return $filecontents; 1142: } 1143: 1144: 1145: sub inserteditinfo { 1146: my ($result,$filecontents,$filetype)=@_; 1147: $filecontents = &HTML::Entities::encode($filecontents,'<>&"'); 1148: # my $editheader='<a href="#editsection">Edit below</a><hr />'; 1149: my $xml_help = ''; 1150: if ($filetype eq 'html') { 1151: $xml_help=Apache::loncommon::helpLatexCheatsheet(); 1152: } 1153: my $cleanbut = ''; 1154: if ($filetype eq 'html') { 1155: $cleanbut='<input type="submit" name="attemptclean" value="'. 1156: &mt('Save and then attempt to clean HTML').'" />'; 1157: } 1158: my $titledisplay=&display_title(); 1159: my %lt=&Apache::lonlocal::texthash('st' => 'Save this', 1160: 'vi' => 'View', 1161: 'ed' => 'Edit'); 1162: my $buttons=(<<BUTTONS); 1163: $cleanbut 1164: <input type="submit" name="savethisfile" accesskey="s" value="$lt{'st'}" /> 1165: <input type="submit" name="viewmode" accesskey="v" value="$lt{'vi'}" /> 1166: BUTTONS 1167: my $editfooter=(<<ENDFOOTER); 1168: <hr /> 1169: <a name="editsection" /> 1170: <form method="post"> 1171: $xml_help 1172: <input type="hidden" name="editmode" value="$lt{'ed'}" /> 1173: $buttons<br /> 1174: <textarea cols="80" rows="40" name="filecont">$filecontents</textarea> 1175: <br />$buttons 1176: <br /> 1177: </form> 1178: $titledisplay 1179: ENDFOOTER 1180: # $result=~s/(\<body[^\>]*\>)/$1$editheader/is; 1181: $result=~s/(\<\/body\>)/$editfooter/is; 1182: return $result; 1183: } 1184: 1185: sub get_target { 1186: my $viewgrades=&Apache::lonnet::allowed('vgr',$ENV{'request.course.id'}); 1187: if ( $ENV{'request.state'} eq 'published') { 1188: if ( defined($ENV{'form.grade_target'}) 1189: && ($viewgrades == 'F' )) { 1190: return ($ENV{'form.grade_target'}); 1191: } elsif (defined($ENV{'form.grade_target'})) { 1192: if (($ENV{'form.grade_target'} eq 'web') || 1193: ($ENV{'form.grade_target'} eq 'tex') ) { 1194: return $ENV{'form.grade_target'} 1195: } else { 1196: return 'web'; 1197: } 1198: } else { 1199: return 'web'; 1200: } 1201: } elsif ($ENV{'request.state'} eq 'construct') { 1202: if ( defined($ENV{'form.grade_target'})) { 1203: return ($ENV{'form.grade_target'}); 1204: } else { 1205: return 'web'; 1206: } 1207: } else { 1208: return 'web'; 1209: } 1210: } 1211: 1212: sub handler { 1213: my $request=shift; 1214: 1215: my $target=&get_target(); 1216: 1217: $Apache::lonxml::debug=$ENV{'user.debug'}; 1218: 1219: if ($ENV{'browser.mathml'}) { 1220: &Apache::loncommon::content_type($request,'text/xml'); 1221: } else { 1222: &Apache::loncommon::content_type($request,'text/html'); 1223: } 1224: &Apache::loncommon::no_cache($request); 1225: $request->send_http_header; 1226: 1227: return OK if $request->header_only; 1228: 1229: 1230: my $file=&Apache::lonnet::filelocation("",$request->uri); 1231: my $filetype; 1232: if ($file =~ /\.sty$/) { 1233: $filetype='sty'; 1234: } else { 1235: $filetype='html'; 1236: } 1237: # 1238: # Edit action? Save file. 1239: # 1240: unless ($ENV{'request.state'} eq 'published') { 1241: if (($ENV{'form.savethisfile'}) || ($ENV{'form.attemptclean'})) { 1242: if (&storefile($file,$ENV{'form.filecont'})) { 1243: &Apache::lonxml::info("<font COLOR=\"#0000FF\">". 1244: &mt('Updated').": ". 1245: &Apache::lonlocal::locallocaltime(time). 1246: " </font>"); 1247: } 1248: } 1249: } 1250: my %mystyle; 1251: my $result = ''; 1252: my $filecontents=&Apache::lonnet::getfile($file); 1253: if ($filecontents eq -1) { 1254: my $bodytag=&Apache::loncommon::bodytag('File Error'); 1255: my $fnf=&mt('File not found'); 1256: $result=(<<ENDNOTFOUND); 1257: <html> 1258: <head> 1259: <title>$fnf</title> 1260: </head> 1261: $bodytag 1262: <b>$fnf: $file</b> 1263: </body> 1264: </html> 1265: ENDNOTFOUND 1266: $filecontents=''; 1267: if ($ENV{'request.state'} ne 'published') { 1268: if ($filetype eq 'sty') { 1269: $filecontents=&createnewsty(); 1270: } else { 1271: $filecontents=&createnewhtml(); 1272: } 1273: $ENV{'form.editmode'}='Edit'; #force edit mode 1274: } 1275: } else { 1276: unless ($ENV{'request.state'} eq 'published') { 1277: if ($ENV{'form.attemptclean'}) { 1278: $filecontents=&htmlclean($filecontents,1); 1279: } 1280: # 1281: # we are in construction space, see if edit mode forced 1282: &Apache::loncommon::get_unprocessed_cgi 1283: ($ENV{'QUERY_STRING'},['editmode']); 1284: } 1285: if (!$ENV{'form.editmode'} || $ENV{'form.viewmode'}) { 1286: $result = &Apache::lonxml::xmlparse($request,$target,$filecontents, 1287: '',%mystyle); 1288: } 1289: } 1290: 1291: # 1292: # Edit action? Insert editing commands 1293: # 1294: unless ($ENV{'request.state'} eq 'published') { 1295: if ($ENV{'form.editmode'} && (!($ENV{'form.viewmode'}))) { 1296: my $displayfile=$request->uri; 1297: $displayfile=~s/^\/[^\/]*//; 1298: $result='<html><body bgcolor="#FFFFFF">'. 1299: &Apache::lonxml::message_location().'<h3>'. 1300: $displayfile. 1301: '</h3></body></html>'; 1302: $result=&inserteditinfo($result,$filecontents,$filetype); 1303: } 1304: } 1305: if ($filetype eq 'html') { writeallows($request->uri); } 1306: 1307: 1308: &Apache::lonxml::add_messages(\$result); 1309: $request->print($result); 1310: 1311: return OK; 1312: } 1313: 1314: sub display_title { 1315: my $result; 1316: if ($ENV{'request.state'} eq 'construct') { 1317: my $title=&Apache::lonnet::gettitle(); 1318: if (!defined($title) || $title eq '') { 1319: $title = $ENV{'request.filename'}; 1320: $title = substr($title, rindex($title, '/') + 1); 1321: } 1322: $result = "<script type='text/javascript'>top.document.title = '$title - LON-CAPA Construction Space';</script>"; 1323: } 1324: return $result; 1325: } 1326: 1327: sub debug { 1328: if ($Apache::lonxml::debug eq "1") { 1329: $|=1; 1330: my $request=$Apache::lonxml::request; 1331: if (!$request) { $request=Apache->request; } 1332: $request->print('<font size="-2"><pre>DEBUG:'.&HTML::Entities::encode($_[0],'<>&"')."</pre></font>\n"); 1333: } 1334: } 1335: 1336: sub error { 1337: $errorcount++; 1338: my $request=$Apache::lonxml::request; 1339: if (!$request) { $request=Apache->request; } 1340: if (($Apache::lonxml::debug eq 1) || ($ENV{'request.state'} eq 'construct') ) { 1341: # If printing in construction space, put the error inside <pre></pre> 1342: push(@Apache::lonxml::error_messages, 1343: $Apache::lonxml::warnings_error_header. 1344: "<b>ERROR:</b>".join("<br />\n",@_)."<br />\n"); 1345: $Apache::lonxml::warnings_error_header=''; 1346: } else { 1347: push(@Apache::lonxml::error_messages, 1348: "<b>An Error occured while processing this resource. The instructor has been notified.</b> <br />"); 1349: #notify author 1350: &Apache::lonmsg::author_res_msg($ENV{'request.filename'},join('<br />',@_)); 1351: #notify course 1352: if ( $ENV{'request.course.id'} ) { 1353: my (undef,%users)=&Apache::lonfeedback::decide_receiver(undef,0,1,1,1); 1354: my $declutter=&Apache::lonnet::declutter($ENV{'request.filename'}); 1355: foreach (keys %users) { 1356: my ($user,$domain) = split(/:/, $_); 1357: &Apache::lonmsg::user_normal_msg($user,$domain, 1358: "Error [$declutter]",join('<br />',@_)); 1359: } 1360: } 1361: } 1362: } 1363: 1364: sub warning { 1365: $warningcount++; 1366: 1367: if ($ENV{'form.grade_target'} ne 'tex') { 1368: if ($ENV{'request.state'} eq 'construct' || $Apache::lonxml::debug) { 1369: my $request=$Apache::lonxml::request; 1370: if (!$request) { $request=Apache->request; } 1371: push(@Apache::lonxml::warning_messages, 1372: $Apache::lonxml::warnings_error_header. 1373: "<b>W</b>ARNING<b>:</b>".join('<br />',@_)."<br />\n"); 1374: $Apache::lonxml::warnings_error_header=''; 1375: } 1376: } 1377: } 1378: 1379: sub info { 1380: if ($ENV{'form.grade_target'} ne 'tex' 1381: && $ENV{'request.state'} eq 'construct') { 1382: push(@Apache::lonxml::info_messages,join('<br />',@_)."<br />\n"); 1383: } 1384: } 1385: 1386: sub message_location { 1387: return '__LONCAPA_INTERNAL_MESSAGE_LOCATION__'; 1388: } 1389: 1390: sub add_messages { 1391: my ($msg)=@_; 1392: my $result=join(' ', 1393: @Apache::lonxml::info_messages, 1394: @Apache::lonxml::error_messages, 1395: @Apache::lonxml::warning_messages); 1396: undef(@Apache::lonxml::info_messages); 1397: undef(@Apache::lonxml::error_messages); 1398: undef(@Apache::lonxml::warning_messages); 1399: $$msg=~s/__LONCAPA_INTERNAL_MESSAGE_LOCATION__/$result/; 1400: $$msg=~s/__LONCAPA_INTERNAL_MESSAGE_LOCATION__//g; 1401: } 1402: 1403: sub get_param { 1404: my ($param,$parstack,$safeeval,$context,$case_insensitive) = @_; 1405: if ( ! $context ) { $context = -1; } 1406: my $args =''; 1407: if ( $#$parstack > (-2-$context) ) { $args=$$parstack[$context]; } 1408: if ( ! $Apache::lonxml::usestyle ) { 1409: $args=$Apache::lonxml::style_values.$args; 1410: } 1411: if ( ! $args ) { return undef; } 1412: if ( $case_insensitive ) { 1413: if ($args =~ s/(my \$)(\Q$param\E)(=\")/$1.lc($2).$3/ei) { 1414: return &Apache::run::run("{$args;".'return $'.$param.'}', 1415: $safeeval); #' 1416: } else { 1417: return undef; 1418: } 1419: } else { 1420: if ( $args =~ /my \$\Q$param\E=\"/ ) { 1421: return &Apache::run::run("{$args;".'return $'.$param.'}', 1422: $safeeval); #' 1423: } else { 1424: return undef; 1425: } 1426: } 1427: } 1428: 1429: sub get_param_var { 1430: my ($param,$parstack,$safeeval,$context,$case_insensitive) = @_; 1431: if ( ! $context ) { $context = -1; } 1432: my $args =''; 1433: if ( $#$parstack > (-2-$context) ) { $args=$$parstack[$context]; } 1434: if ( ! $Apache::lonxml::usestyle ) { 1435: $args=$Apache::lonxml::style_values.$args; 1436: } 1437: &Apache::lonxml::debug("Args are $args param is $param"); 1438: if ($case_insensitive) { 1439: if (! ($args=~s/(my \$)(\Q$param\E)(=\")/$1.lc($2).$3/ei)) { 1440: return undef; 1441: } 1442: } elsif ( $args !~ /my \$\Q$param\E=\"/ ) { return undef; } 1443: my $value=&Apache::run::run("{$args;".'return $'.$param.'}',$safeeval); #' 1444: &Apache::lonxml::debug("first run is $value"); 1445: if ($value =~ /^[\$\@\%]\w+$/) { 1446: &Apache::lonxml::debug("doing second"); 1447: my @result=&Apache::run::run("return $value",$safeeval,1); 1448: if (!defined($result[0])) { 1449: return $value 1450: } else { 1451: if (wantarray) { return @result; } else { return $result[0]; } 1452: } 1453: } else { 1454: return $value; 1455: } 1456: } 1457: 1458: sub register_insert { 1459: my @data = split /\n/, &Apache::lonnet::getfile('/home/httpd/lonTabs/insertlist.tab'); 1460: my $i; 1461: my $tagnum=0; 1462: my @order; 1463: for ($i=0;$i < $#data; $i++) { 1464: my $line = $data[$i]; 1465: if ( $line =~ /^\#/ || $line =~ /^\s*\n/) { next; } 1466: if ( $line =~ /TABLE/ ) { last; } 1467: my ($tag,$descrip,$color,$function,$show,$helpfile,$helpdesc) = split(/,/, $line); 1468: if ($tag) { 1469: $insertlist{"$tagnum.tag"} = $tag; 1470: $insertlist{"$tagnum.description"} = $descrip; 1471: $insertlist{"$tagnum.color"} = $color; 1472: $insertlist{"$tagnum.function"} = $function; 1473: if (!defined($show)) { $show='yes'; } 1474: $insertlist{"$tagnum.show"}= $show; 1475: $insertlist{"$tagnum.helpfile"} = $helpfile; 1476: $insertlist{"$tagnum.helpdesc"} = $helpdesc; 1477: $insertlist{"$tag.num"}=$tagnum; 1478: $tagnum++; 1479: } 1480: } 1481: $i++; #skipping TABLE line 1482: $tagnum = 0; 1483: for (;$i < $#data;$i++) { 1484: my $line = $data[$i]; 1485: my ($mnemonic,@which) = split(/ +/,$line); 1486: my $tag = $insertlist{"$tagnum.tag"}; 1487: for (my $j=0;$j <=$#which;$j++) { 1488: if ( $which[$j] eq 'Y' ) { 1489: if ($insertlist{"$j.show"} ne 'no') { 1490: push(@{ $insertlist{"$tag.which"} },$j); 1491: } 1492: } 1493: } 1494: $tagnum++; 1495: } 1496: } 1497: 1498: sub description { 1499: my ($token)=@_; 1500: my $tagnum; 1501: my $tag=$token->[1]; 1502: foreach my $namespace (reverse @Apache::lonxml::namespace) { 1503: my $testtag=$namespace.'::'.$tag; 1504: $tagnum=$insertlist{"$testtag.num"}; 1505: if (defined($tagnum)) { last; } 1506: } 1507: if (!defined ($tagnum)) { $tagnum=$Apache::lonxml::insertlist{"$tag.num"}; } 1508: return $insertlist{$tagnum.'.description'}; 1509: } 1510: 1511: # Returns a list containing the help file, and the description 1512: sub helpinfo { 1513: my ($token)=@_; 1514: my $tagnum; 1515: my $tag=$token->[1]; 1516: foreach my $namespace (reverse @Apache::lonxml::namespace) { 1517: my $testtag=$namespace.'::'.$tag; 1518: $tagnum=$insertlist{"$testtag.num"}; 1519: if (defined($tagnum)) { last; } 1520: } 1521: if (!defined ($tagnum)) { $tagnum=$Apache::lonxml::insertlist{"$tag.num"}; } 1522: return ($insertlist{$tagnum.'.helpfile'}, $insertlist{$tagnum.'.helpdesc'}); 1523: } 1524: 1525: # ----------------------------------------------------------------- whichuser 1526: # returns a list of $symb, $courseid, $domain, $name that is correct for 1527: # calls to lonnet functions for this setup. 1528: # - looks for form.grade_ parameters 1529: sub whichuser { 1530: my ($passedsymb)=@_; 1531: my ($symb,$courseid,$domain,$name,$publicuser); 1532: if (defined($ENV{'form.grade_symb'})) { 1533: my $tmp_courseid=$ENV{'form.grade_courseid'}; 1534: my $allowed=&Apache::lonnet::allowed('vgr',$tmp_courseid); 1535: if ($allowed) { 1536: $symb=$ENV{'form.grade_symb'}; 1537: $courseid=$ENV{'form.grade_courseid'}; 1538: $domain=$ENV{'form.grade_domain'}; 1539: $name=$ENV{'form.grade_username'}; 1540: } 1541: } else { 1542: if (!$passedsymb) { 1543: $symb=&Apache::lonnet::symbread(); 1544: } else { 1545: $symb=$passedsymb; 1546: } 1547: $courseid=$ENV{'request.course.id'}; 1548: $domain=$ENV{'user.domain'}; 1549: $name=$ENV{'user.name'}; 1550: if ($name eq 'public' && $domain eq 'public') { 1551: if (!defined($ENV{'form.username'})) { 1552: $ENV{'form.username'}.=time.rand(10000000); 1553: } 1554: $name.=$ENV{'form.username'}; 1555: } 1556: } 1557: return ($symb,$courseid,$domain,$name,$publicuser); 1558: } 1559: 1560: 1; 1561: __END__ 1562: 1563: