loncom/xml/lonxml.pm - view

File: [LON-CAPA] / loncom / xml / lonxml.pm
Revision 1.357: download - view: text, annotated - select for diffs
Sat Feb 26 05:37:23 2005 UTC (19 years, 4 months ago) by albertel
Branches: MAIN
CVS tags: HEAD

- ttm can now be forced on, which means Hi XML, what you mean we really have to be xml now?
   - roles screen with no roles doesn't barf in xml mode
   - viewing a homework problem with an inline remote and no selected roles doesn't baf
   - pref screen to change back to something else doesn't barf

- no guarentees about anything else, not that the remote control in particular is non functional

1: # The LearningOnline Network with CAPA 2: # XML Parser Module 3: # 4: # $Id: lonxml.pm,v 1.357 2005/02/26 05:37:23 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: 40: 41: package Apache::lonxml; 42: use vars 43: qw(@pwd @outputstack $redirection $import @extlinks $metamode $evaluate %insertlist @namespace $errorcount $warningcount @htmlareafields); 44: use strict; 45: use HTML::LCParser(); 46: use HTML::TreeBuilder(); 47: use HTML::Entities(); 48: use Safe(); 49: use Safe::Hole(); 50: use Math::Cephes(); 51: use Math::Random(); 52: use Opcode(); 53: use POSIX qw(strftime); 54: use Time::HiRes qw( gettimeofday tv_interval ); 55: 56: sub register { 57: my ($space,@taglist) = @_; 58: foreach my $temptag (@taglist) { 59: push(@{ $Apache::lonxml::alltags{$temptag} },$space); 60: } 61: } 62: 63: sub deregister { 64: my ($space,@taglist) = @_; 65: foreach my $temptag (@taglist) { 66: my $tempspace = $Apache::lonxml::alltags{$temptag}[-1]; 67: if ($tempspace eq $space) { 68: pop(@{ $Apache::lonxml::alltags{$temptag} }); 69: } 70: } 71: #&printalltags(); 72: } 73: 74: use Apache::Constants qw(:common); 75: use Apache::lontexconvert(); 76: use Apache::style(); 77: use Apache::run(); 78: use Apache::londefdef(); 79: use Apache::scripttag(); 80: use Apache::languagetags(); 81: use Apache::edit(); 82: use Apache::inputtags(); 83: use Apache::outputtags(); 84: use Apache::lonnet(); 85: use Apache::File(); 86: use Apache::loncommon(); 87: use Apache::lonfeedback(); 88: use Apache::lonmsg(); 89: use Apache::loncacc(); 90: use Apache::lonlocal; 91: 92: #================================================== Main subroutine: xmlparse 93: #debugging control, to turn on debugging modify the correct handler 94: $Apache::lonxml::debug=0; 95: 96: # keeps count of the number of warnings and errors generated in a parse 97: $warningcount=0; 98: $errorcount=0; 99: 100: #path to the directory containing the file currently being processed 101: @pwd=(); 102: 103: #these two are used for capturing a subset of the output for later processing, 104: #don't touch them directly use &startredirection and &endredirection 105: @outputstack = (); 106: $redirection = 0; 107: 108: #controls wheter the <import> tag actually does 109: $import = 1; 110: @extlinks=(); 111: 112: # meta mode is a bit weird only some output is to be turned off 113: #<output> tag turns metamode off (defined in londefdef.pm) 114: $metamode = 0; 115: 116: # turns on and of run::evaluate actually derefencing var refs 117: $evaluate = 1; 118: 119: # data structure for eidt mode, determines what tags can go into what other tags 120: %insertlist=(); 121: 122: # stores the list of active tag namespaces 123: @namespace=(); 124: 125: # has the dynamic menu been updated to know about this resource 126: $Apache::lonxml::registered=0; 127: 128: # a pointer the the Apache request object 129: $Apache::lonxml::request=''; 130: 131: # a problem number counter, and check on ether it is used 132: $Apache::lonxml::counter=1; 133: $Apache::lonxml::counter_changed=0; 134: 135: #internal check on whether to look at style defs 136: $Apache::lonxml::usestyle=1; 137: 138: #locations used to store the parameter string for style substitutions 139: $Apache::lonxml::style_values=''; 140: $Apache::lonxml::style_end_values=''; 141: 142: #array of ssi calls that need to occur after we are done parsing 143: @Apache::lonxml::ssi_info=(); 144: 145: #should we do the postag variable interpolation 146: $Apache::lonxml::post_evaluate=1; 147: 148: #a header message to emit in the case of any generated warning or errors 149: $Apache::lonxml::warnings_error_header=''; 150: 151: sub xmlbegin { 152: my ($style)=@_; 153: my $output=''; 154: @htmlareafields=(); 155: if ($ENV{'browser.mathml'}) { 156: $output='<?xml version="1.0"?>' 157: #.'<?xml-stylesheet type="text/css" href="/adm/MathML/mathml.css"?>'."\n" 158: # .'<!DOCTYPE html SYSTEM "/adm/MathML/mathml.dtd" ' 159: 160: # .'<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd" [<!ENTITY mathns "http://www.w3.org/1998/Math/MathML">] >' 161: .'<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.1 plus MathML 2.0 plus SVG 1.1//EN" "http://www.w3.org/2002/04/xhtml-math-svg/xhtml-math-svg.dtd">' 162: .'<html xmlns:math="http://www.w3.org/1998/Math/MathML" ' 163: .'xmlns="http://www.w3.org/1999/xhtml">'; 164: } else { 165: $output='<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd"><html>'; 166: } 167: if ($style eq 'encode') { 168: $output=&HTML::Entities::encode($output,'<>&"'); 169: } 170: return $output; 171: } 172: 173: sub xmlend { 174: my ($target,$parser)=@_; 175: my $mode='xml'; 176: my $status='OPEN'; 177: if ($Apache::lonhomework::parsing_a_problem) { 178: $mode='problem'; 179: $status=$Apache::inputtags::status[-1]; 180: } 181: my $discussion=&Apache::lonfeedback::list_discussion($mode,$status); 182: if ($target eq 'tex') { 183: $discussion.='<tex>\keephidden{ENDOFPROBLEM}\vskip 0.5mm\noindent\makebox[\textwidth/$number_of_columns][b]{\hrulefill}\end{document}</tex>'; 184: &Apache::lonxml::newparser($parser,\$discussion,''); 185: return ''; 186: } else { 187: return $discussion.'</html>'; 188: } 189: } 190: 191: sub tokeninputfield { 192: my $defhost=$Apache::lonnet::perlvar{'lonHostID'}; 193: $defhost=~tr/a-z/A-Z/; 194: return (<<ENDINPUTFIELD) 195: <script type="text/javascript"> 196: function updatetoken() { 197: var comp=new Array; 198: var barcode=unescape(document.tokeninput.barcode.value); 199: comp=barcode.split('*'); 200: if (typeof(comp[0])!="undefined") { 201: document.tokeninput.codeone.value=comp[0]; 202: } 203: if (typeof(comp[1])!="undefined") { 204: document.tokeninput.codetwo.value=comp[1]; 205: } 206: if (typeof(comp[2])!="undefined") { 207: comp[2]=comp[2].toUpperCase(); 208: document.tokeninput.codethree.value=comp[2]; 209: } 210: document.tokeninput.barcode.value=''; 211: } 212: </script> 213: <form method="post" name="tokeninput"> 214: <table border="2" bgcolor="#FFFFBB"> 215: <tr><th>DocID Checkin</th></tr> 216: <tr><td> 217: <table> 218: <tr> 219: <td>Scan in Barcode</td> 220: <td><input type="text" size="22" name="barcode" 221: onChange="updatetoken()"/></td> 222: </tr> 223: <tr><td><i>or</i> Type in DocID</td> 224: <td> 225: <input type="text" size="5" name="codeone" /> 226: <b><font size="+2">*</font></b> 227: <input type="text" size="5" name="codetwo" /> 228: <b><font size="+2">*</font></b> 229: <input type="text" size="10" name="codethree" value="$defhost" 230: onChange="this.value=this.value.toUpperCase()" /> 231: </td></tr> 232: </table> 233: </td></tr> 234: <tr><td><input type="submit" value="Check in DocID" /></td></tr> 235: </table> 236: </form> 237: ENDINPUTFIELD 238: } 239: 240: sub maketoken { 241: my ($symb,$tuname,$tudom,$tcrsid)=@_; 242: unless ($symb) { 243: $symb=&Apache::lonnet::symbread(); 244: } 245: unless ($tuname) { 246: $tuname=$ENV{'user.name'}; 247: $tudom=$ENV{'user.domain'}; 248: $tcrsid=$ENV{'request.course.id'}; 249: } 250: 251: return &Apache::lonnet::checkout($symb,$tuname,$tudom,$tcrsid); 252: } 253: 254: sub printtokenheader { 255: my ($target,$token,$tsymb,$tcrsid,$tudom,$tuname)=@_; 256: unless ($token) { return ''; } 257: 258: my ($symb,$courseid,$domain,$name) = &Apache::lonxml::whichuser(); 259: unless ($tsymb) { 260: $tsymb=$symb; 261: } 262: unless ($tuname) { 263: $tuname=$name; 264: $tudom=$domain; 265: $tcrsid=$courseid; 266: } 267: 268: my %reply=&Apache::lonnet::get('environment', 269: ['firstname','middlename','lastname','generation'], 270: $tudom,$tuname); 271: my $plainname=$reply{'firstname'}.' '. 272: $reply{'middlename'}.' '. 273: $reply{'lastname'}.' '. 274: $reply{'generation'}; 275: 276: if ($target eq 'web') { 277: my %idhash=&Apache::lonnet::idrget($tudom,($tuname)); 278: return 279: '<img align="right" src="/cgi-bin/barcode.png?encode='.$token.'" />'. 280: &mt('Checked out for').' '.$plainname. 281: '<br />'.&mt('User').': '.$tuname.' at '.$tudom. 282: '<br />'.&mt('ID').': '.$idhash{$tuname}. 283: '<br />'.&mt('CourseID').': '.$tcrsid. 284: '<br />'.&mt('Course').': '.$ENV{'course.'.$tcrsid.'.description'}. 285: '<br />'.&mt('DocID').': '.$token. 286: '<br />'.&mt('Time').': '.&Apache::lonlocal::locallocaltime().'<hr />'; 287: } else { 288: return $token; 289: } 290: } 291: 292: sub fontsettings { 293: my $headerstring=''; 294: if (($ENV{'browser.os'} eq 'mac') && (!$ENV{'browser.mathml'})) { 295: $headerstring.= 296: '<meta Content-Type="text/html; charset=x-mac-roman" />'; 297: } elsif (!$ENV{'browser.mathml'} && $ENV{'browser.unicode'}) { 298: $headerstring.= 299: '<meta http-equiv="Content-Type" content="text/html; charset=utf-8" />'; 300: } 301: return $headerstring; 302: } 303: 304: sub printalltags { 305: my $temp; 306: foreach $temp (sort keys %Apache::lonxml::alltags) { 307: &Apache::lonxml::debug("$temp -- ". 308: join(',',@{ $Apache::lonxml::alltags{$temp} })); 309: } 310: } 311: 312: sub xmlparse { 313: my ($request,$target,$content_file_string,$safeinit,%style_for_target) = @_; 314: 315: &setup_globals($request,$target); 316: &Apache::inputtags::initialize_inputtags(); 317: &Apache::outputtags::initialize_outputtags(); 318: &Apache::edit::initialize_edit(); 319: &Apache::londefdef::initialize_londefdef(); 320: 321: # 322: # do we have a course style file? 323: # 324: 325: if ($ENV{'request.course.id'} && $ENV{'request.state'} ne 'construct') { 326: my $bodytext= 327: $ENV{'course.'.$ENV{'request.course.id'}.'.default_xml_style'}; 328: if ($bodytext) { 329: foreach my $file (split(',',$bodytext)) { 330: my $location=&Apache::lonnet::filelocation('',$file); 331: my $styletext=&Apache::lonnet::getfile($location); 332: if ($styletext ne '-1') { 333: %style_for_target = (%style_for_target, 334: &Apache::style::styleparser($target,$styletext)); 335: } 336: } 337: } 338: } elsif ($ENV{'construct.style'} && ($ENV{'request.state'} eq 'construct')) { 339: my $location=&Apache::lonnet::filelocation('',$ENV{'construct.style'}); 340: my $styletext=&Apache::lonnet::getfile($location); 341: if ($styletext ne '-1') { 342: %style_for_target = (%style_for_target, 343: &Apache::style::styleparser($target,$styletext)); 344: } 345: } 346: #&printalltags(); 347: my @pars = (); 348: my $pwd=$ENV{'request.filename'}; 349: $pwd =~ s:/[^/]*$::; 350: &newparser(\@pars,\$content_file_string,$pwd); 351: 352: my $safeeval = new Safe; 353: my $safehole = new Safe::Hole; 354: &init_safespace($target,$safeeval,$safehole,$safeinit); 355: #-------------------- Redefinition of the target in the case of compound target 356: 357: ($target, my @tenta) = split('&&',$target); 358: 359: my @stack = (); 360: my @parstack = (); 361: &initdepth; 362: 363: my $finaloutput = &inner_xmlparse($target,\@stack,\@parstack,\@pars, 364: $safeeval,\%style_for_target); 365: 366: if ($ENV{'request.uri'}) { 367: &writeallows($ENV{'request.uri'}); 368: } 369: &do_registered_ssi(); 370: if ($Apache::lonxml::counter_changed) { &store_counter() } 371: return $finaloutput; 372: } 373: 374: sub htmlclean { 375: my ($raw,$full)=@_; 376: # Take care of CRLF etc 377: 378: $raw=~s/\r\f/\n/gs; $raw=~s/\f\r/\n/gs; 379: $raw=~s/\r\n/\n/gs; $raw=~s/\n\r/\n/gs; 380: $raw=~s/\f/\n/gs; $raw=~s/\r/\n/gs; 381: $raw=~s/\&\#10\;/\n/gs; $raw=~s/\&\#13\;/\n/gs; 382: 383: # Generate empty tags, remove wrong end tags 384: $raw=~s/\<(br|hr|img|meta|allow|basefont)([^\>\/]*?)\>/\<$1$2 \/\>/gis; 385: $raw=~s/\<\/(br|hr|img|meta|allow|basefont)\>//gis; 386: unless ($full) { 387: $raw=~s/\<[\/]*(body|head|html)\>//gis; 388: } 389: # Make standard tags lowercase 390: foreach ('html','body','head','meta','h1','h2','h3','h4','b','i','m', 391: 'table','tr','td','th','p','br','hr','img','embed','font', 392: 'a','strong','center','title','basefont','li','ol','ul', 393: 'input','select','form','option','script','pre') { 394: $raw=~s/\<$_\s*\>/\<$_\>/gis; 395: $raw=~s/\<\/$_\s*\>/<\/$_\>/gis; 396: $raw=~s/\<$_\s([^\>]*)\>/<$_ $1\>/gis; 397: } 398: return $raw; 399: } 400: 401: sub latex_special_symbols { 402: my ($string,$where)=@_; 403: if ($where eq 'header') { 404: $string =~ s/(\\|_|\^)/ /g; 405: $string =~ s/(\$|%|\{|\})/\\$1/g; 406: $string =~ s/_/ /g; 407: $string=&Apache::lonprintout::character_chart($string); 408: # any & or # leftover should be safe to just escape 409: $string=~s/([^\\])\&/$1\\\&/g; 410: $string=~s/([^\\])\#/$1\\\#/g; 411: } else { 412: $string=~s/\\/\\ensuremath{\\backslash}/g; 413: $string=~s/([^\\]|^)\%/$1\\\%/g; 414: $string=~s/([^\\]|^)\$/$1\\\$/g; 415: $string=~s/([^\\])\_/$1\\_/g; 416: $string=~s/\$\$/\$\\\$/g; 417: $string=~s/\_\_/\_\\\_/g; 418: $string=~s/\#\#/\#\\\#/g; 419: $string=~s/([^\\]|^)(\~|\^)/$1\\$2\\strut /g; 420: $string=~s/(>|<)/\\ensuremath\{$1\}/g; #more or less 421: $string=&Apache::lonprintout::character_chart($string); 422: # any & or # leftover should be safe to just escape 423: $string=~s/([^\\]|^)\&/$1\\\&/g; 424: $string=~s/([^\\]|^)\#/$1\\\#/g; 425: $string=~s/\|/\$\\mid\$/g; 426: #single { or } How to escape? 427: } 428: return $string; 429: } 430: 431: sub inner_xmlparse { 432: my ($target,$stack,$parstack,$pars,$safeeval,$style_for_target)=@_; 433: my $finaloutput = ''; 434: my $result; 435: my $token; 436: my $dontpop=0; 437: while ( $#$pars > -1 ) { 438: while ($token = $$pars['-1']->get_token) { 439: if (($token->[0] eq 'T') || ($token->[0] eq 'C') ) { 440: if ($metamode<1) { 441: my $text=$token->[1]; 442: if ($token->[0] eq 'C' && $target eq 'tex') { 443: $text = ''; 444: # $text = '%'.$text."\n"; 445: } 446: $result.=$text; 447: } 448: } elsif (($token->[0] eq 'D')) { 449: if ($metamode<1 && $target eq 'web') { 450: my $text=$token->[1]; 451: $result.=$text; 452: } 453: } elsif ($token->[0] eq 'PI') { 454: if ($metamode<1 && $target eq 'web') { 455: $result=$token->[2]; 456: } 457: } elsif ($token->[0] eq 'S') { 458: # add tag to stack 459: push (@$stack,$token->[1]); 460: # add parameters list to another stack 461: push (@$parstack,&parstring($token)); 462: &increasedepth($token); 463: if ($Apache::lonxml::usestyle && 464: exists($$style_for_target{$token->[1]})) { 465: $Apache::lonxml::usestyle=0; 466: my $string=$$style_for_target{$token->[1]}. 467: '<LONCAPA_INTERNAL_TURN_STYLE_ON />'; 468: &Apache::lonxml::newparser($pars,\$string); 469: $Apache::lonxml::style_values=$$parstack[-1]; 470: $Apache::lonxml::style_end_values=$$parstack[-1]; 471: } else { 472: $result = &callsub("start_$token->[1]", $target, $token, $stack, 473: $parstack, $pars, $safeeval, $style_for_target); 474: } 475: } elsif ($token->[0] eq 'E') { 476: if ($Apache::lonxml::usestyle && 477: exists($$style_for_target{'/'."$token->[1]"})) { 478: $Apache::lonxml::usestyle=0; 479: my $string=$$style_for_target{'/'.$token->[1]}. 480: '<LONCAPA_INTERNAL_TURN_STYLE_ON end="'.$token->[1].'" />'; 481: &Apache::lonxml::newparser($pars,\$string); 482: $Apache::lonxml::style_values=$Apache::lonxml::style_end_values; 483: $Apache::lonxml::style_end_values=''; 484: $dontpop=1; 485: } else { 486: #clear out any tags that didn't end 487: while ($token->[1] ne $$stack['-1'] && ($#$stack > -1)) { 488: my $lasttag=$$stack[-1]; 489: if ($token->[1] =~ /^\Q$lasttag\E$/i) { 490: &Apache::lonxml::warning('Using tag </'.$token->[1].'> on line '.$token->[3].' as end tag to <'.$$stack[-1].'>'); 491: last; 492: } else { 493: &Apache::lonxml::warning('Found tag </'.$token->[1].'> on line '.$token->[3].' when looking for </'.$$stack[-1].'> in file'); 494: &end_tag($stack,$parstack,$token); 495: } 496: } 497: $result = &callsub("end_$token->[1]", $target, $token, $stack, 498: $parstack, $pars,$safeeval, $style_for_target); 499: } 500: } else { 501: &Apache::lonxml::error("Unknown token event :$token->[0]:$token->[1]:"); 502: } 503: #evaluate variable refs in result 504: if ($Apache::lonxml::post_evaluate &&$result ne "") { 505: my $extras; 506: if (!$Apache::lonxml::usestyle) { 507: $extras=$Apache::lonxml::style_values; 508: } 509: if ( $#$parstack > -1 ) { 510: $result=&Apache::run::evaluate($result,$safeeval,$extras.$$parstack[-1]); 511: } else { 512: $result= &Apache::run::evaluate($result,$safeeval,$extras); 513: } 514: } 515: $Apache::lonxml::post_evaluate=1; 516: 517: if (($token->[0] eq 'T') || ($token->[0] eq 'C') || ($token->[0] eq 'D') ) { 518: #Style file definitions should be correct 519: if ($target eq 'tex' && ($Apache::lonxml::usestyle)) { 520: $result=&latex_special_symbols($result); 521: } 522: } 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 $finaloutput; 551: } 552: 553: ## 554: ## Looks to see if there is a subroutine defined for this tag. If so, call it, 555: ## otherwise do not call it as we do not know what it is. 556: ## 557: sub callsub { 558: my ($sub,$target,$token,$tagstack,$parstack,$parser,$safeeval,$style)=@_; 559: my $currentstring=''; 560: my $nodefault; 561: { 562: my $sub1; 563: no strict 'refs'; 564: my $tag=$token->[1]; 565: # get utterly rid of extended html tags 566: if ($tag=~/^x\-/i) { return ''; } 567: my $space=$Apache::lonxml::alltags{$tag}[-1]; 568: if (!$space) { 569: $tag=~tr/A-Z/a-z/; 570: $sub=~tr/A-Z/a-z/; 571: $space=$Apache::lonxml::alltags{$tag}[-1] 572: } 573: 574: my $deleted=0; 575: $Apache::lonxml::curdepth=join('_',@Apache::lonxml::depthcounter); 576: if (($token->[0] eq 'S') && ($target eq 'modified')) { 577: $deleted=&Apache::edit::handle_delete($space,$target,$token,$tagstack, 578: $parstack,$parser,$safeeval, 579: $style); 580: } 581: if (!$deleted) { 582: if ($space) { 583: #&Apache::lonxml::debug("Calling sub $sub in $space $metamode"); 584: $sub1="$space\:\:$sub"; 585: ($currentstring,$nodefault) = &$sub1($target,$token,$tagstack, 586: $parstack,$parser,$safeeval, 587: $style); 588: } else { 589: if ($target eq 'tex') { 590: # throw away tag name 591: return ''; 592: } 593: #&Apache::lonxml::debug("NOT Calling sub $sub in $space $metamode"); 594: if ($metamode <1) { 595: if (defined($token->[4]) && ($metamode < 1)) { 596: $currentstring = $token->[4]; 597: } else { 598: $currentstring = $token->[2]; 599: } 600: } 601: } 602: # &Apache::lonxml::debug("nodefalt:$nodefault:"); 603: if ($currentstring eq '' && $nodefault eq '') { 604: if ($target eq 'edit') { 605: #&Apache::lonxml::debug("doing default edit for $token->[1]"); 606: if ($token->[0] eq 'S') { 607: $currentstring = &Apache::edit::tag_start($target,$token); 608: } elsif ($token->[0] eq 'E') { 609: $currentstring = &Apache::edit::tag_end($target,$token); 610: } 611: } elsif ($target eq 'modified') { 612: if ($token->[0] eq 'S') { 613: $currentstring = $token->[4]; 614: $currentstring.=&Apache::edit::handle_insert(); 615: } elsif ($token->[0] eq 'E') { 616: $currentstring = $token->[2]; 617: $currentstring.=&Apache::edit::handle_insertafter($token->[1]); 618: } else { 619: $currentstring = $token->[2]; 620: } 621: } 622: } 623: } 624: use strict 'refs'; 625: } 626: return $currentstring; 627: } 628: 629: sub setup_globals { 630: my ($request,$target)=@_; 631: $Apache::lonxml::request=$request; 632: $Apache::lonxml::registered = 0; 633: @Apache::lonxml::htmlareafields=(); 634: $errorcount=0; 635: $warningcount=0; 636: $Apache::lonxml::default_homework_loaded=0; 637: $Apache::lonxml::usestyle=1; 638: &init_counter(); 639: @Apache::lonxml::pwd=(); 640: @Apache::lonxml::extlinks=(); 641: @Apache::lonxml::ssi_info=(); 642: $Apache::lonxml::post_evaluate=1; 643: $Apache::lonxml::warnings_error_header=''; 644: if ($target eq 'meta') { 645: $Apache::lonxml::redirection = 0; 646: $Apache::lonxml::metamode = 1; 647: $Apache::lonxml::evaluate = 1; 648: $Apache::lonxml::import = 0; 649: } elsif ($target eq 'answer') { 650: $Apache::lonxml::redirection = 0; 651: $Apache::lonxml::metamode = 1; 652: $Apache::lonxml::evaluate = 1; 653: $Apache::lonxml::import = 1; 654: } elsif ($target eq 'grade') { 655: &startredirection; 656: $Apache::lonxml::metamode = 0; 657: $Apache::lonxml::evaluate = 1; 658: $Apache::lonxml::import = 1; 659: } elsif ($target eq 'modified') { 660: $Apache::lonxml::redirection = 0; 661: $Apache::lonxml::metamode = 0; 662: $Apache::lonxml::evaluate = 0; 663: $Apache::lonxml::import = 0; 664: } elsif ($target eq 'edit') { 665: $Apache::lonxml::redirection = 0; 666: $Apache::lonxml::metamode = 0; 667: $Apache::lonxml::evaluate = 0; 668: $Apache::lonxml::import = 0; 669: } elsif ($target eq 'analyze') { 670: $Apache::lonxml::redirection = 0; 671: $Apache::lonxml::metamode = 0; 672: $Apache::lonxml::evaluate = 1; 673: $Apache::lonxml::import = 1; 674: } else { 675: $Apache::lonxml::redirection = 0; 676: $Apache::lonxml::metamode = 0; 677: $Apache::lonxml::evaluate = 1; 678: $Apache::lonxml::import = 1; 679: } 680: } 681: 682: sub init_safespace { 683: my ($target,$safeeval,$safehole,$safeinit) = @_; 684: $safeeval->permit("entereval"); 685: $safeeval->permit(":base_math"); 686: $safeeval->permit("sort"); 687: $safeeval->permit("time"); 688: $safeeval->deny(":base_io"); 689: $safehole->wrap(\&Apache::scripttag::xmlparse,$safeeval,'&xmlparse'); 690: $safehole->wrap(\&Apache::outputtags::multipart,$safeeval,'&multipart'); 691: $safehole->wrap(\&Apache::lonnet::EXT,$safeeval,'&EXT'); 692: $safehole->wrap(\&Apache::chemresponse::chem_standard_order,$safeeval, 693: '&chem_standard_order'); 694: 695: $safehole->wrap(\&Math::Cephes::asin,$safeeval,'&asin'); 696: $safehole->wrap(\&Math::Cephes::acos,$safeeval,'&acos'); 697: $safehole->wrap(\&Math::Cephes::atan,$safeeval,'&atan'); 698: $safehole->wrap(\&Math::Cephes::sinh,$safeeval,'&sinh'); 699: $safehole->wrap(\&Math::Cephes::cosh,$safeeval,'&cosh'); 700: $safehole->wrap(\&Math::Cephes::tanh,$safeeval,'&tanh'); 701: $safehole->wrap(\&Math::Cephes::asinh,$safeeval,'&asinh'); 702: $safehole->wrap(\&Math::Cephes::acosh,$safeeval,'&acosh'); 703: $safehole->wrap(\&Math::Cephes::atanh,$safeeval,'&atanh'); 704: $safehole->wrap(\&Math::Cephes::erf,$safeeval,'&erf'); 705: $safehole->wrap(\&Math::Cephes::erfc,$safeeval,'&erfc'); 706: $safehole->wrap(\&Math::Cephes::j0,$safeeval,'&j0'); 707: $safehole->wrap(\&Math::Cephes::j1,$safeeval,'&j1'); 708: $safehole->wrap(\&Math::Cephes::jn,$safeeval,'&jn'); 709: $safehole->wrap(\&Math::Cephes::jv,$safeeval,'&jv'); 710: $safehole->wrap(\&Math::Cephes::y0,$safeeval,'&y0'); 711: $safehole->wrap(\&Math::Cephes::y1,$safeeval,'&y1'); 712: $safehole->wrap(\&Math::Cephes::yn,$safeeval,'&yn'); 713: $safehole->wrap(\&Math::Cephes::yv,$safeeval,'&yv'); 714: 715: $safehole->wrap(\&Math::Cephes::bdtr ,$safeeval,'&bdtr' ); 716: $safehole->wrap(\&Math::Cephes::bdtrc ,$safeeval,'&bdtrc' ); 717: $safehole->wrap(\&Math::Cephes::bdtri ,$safeeval,'&bdtri' ); 718: $safehole->wrap(\&Math::Cephes::btdtr ,$safeeval,'&btdtr' ); 719: $safehole->wrap(\&Math::Cephes::chdtr ,$safeeval,'&chdtr' ); 720: $safehole->wrap(\&Math::Cephes::chdtrc,$safeeval,'&chdtrc'); 721: $safehole->wrap(\&Math::Cephes::chdtri,$safeeval,'&chdtri'); 722: $safehole->wrap(\&Math::Cephes::fdtr ,$safeeval,'&fdtr' ); 723: $safehole->wrap(\&Math::Cephes::fdtrc ,$safeeval,'&fdtrc' ); 724: $safehole->wrap(\&Math::Cephes::fdtri ,$safeeval,'&fdtri' ); 725: $safehole->wrap(\&Math::Cephes::gdtr ,$safeeval,'&gdtr' ); 726: $safehole->wrap(\&Math::Cephes::gdtrc ,$safeeval,'&gdtrc' ); 727: $safehole->wrap(\&Math::Cephes::nbdtr ,$safeeval,'&nbdtr' ); 728: $safehole->wrap(\&Math::Cephes::nbdtrc,$safeeval,'&nbdtrc'); 729: $safehole->wrap(\&Math::Cephes::nbdtri,$safeeval,'&nbdtri'); 730: $safehole->wrap(\&Math::Cephes::ndtr ,$safeeval,'&ndtr' ); 731: $safehole->wrap(\&Math::Cephes::ndtri ,$safeeval,'&ndtri' ); 732: $safehole->wrap(\&Math::Cephes::pdtr ,$safeeval,'&pdtr' ); 733: $safehole->wrap(\&Math::Cephes::pdtrc ,$safeeval,'&pdtrc' ); 734: $safehole->wrap(\&Math::Cephes::pdtri ,$safeeval,'&pdtri' ); 735: $safehole->wrap(\&Math::Cephes::stdtr ,$safeeval,'&stdtr' ); 736: $safehole->wrap(\&Math::Cephes::stdtri,$safeeval,'&stdtri'); 737: 738: # $safehole->wrap(\&Math::Cephes::new_fract,$safeeval,'&new_fract'); 739: # $safehole->wrap(\&Math::Cephes::radd,$safeeval,'&radd'); 740: # $safehole->wrap(\&Math::Cephes::rsub,$safeeval,'&rsub'); 741: # $safehole->wrap(\&Math::Cephes::rmul,$safeeval,'&rmul'); 742: # $safehole->wrap(\&Math::Cephes::rdiv,$safeeval,'&rdiv'); 743: # $safehole->wrap(\&Math::Cephes::euclid,$safeeval,'&euclid'); 744: 745: $safehole->wrap(\&Math::Random::random_beta,$safeeval,'&math_random_beta'); 746: $safehole->wrap(\&Math::Random::random_chi_square,$safeeval,'&math_random_chi_square'); 747: $safehole->wrap(\&Math::Random::random_exponential,$safeeval,'&math_random_exponential'); 748: $safehole->wrap(\&Math::Random::random_f,$safeeval,'&math_random_f'); 749: $safehole->wrap(\&Math::Random::random_gamma,$safeeval,'&math_random_gamma'); 750: $safehole->wrap(\&Math::Random::random_multivariate_normal,$safeeval,'&math_random_multivariate_normal'); 751: $safehole->wrap(\&Math::Random::random_multinomial,$safeeval,'&math_random_multinomial'); 752: $safehole->wrap(\&Math::Random::random_noncentral_chi_square,$safeeval,'&math_random_noncentral_chi_square'); 753: $safehole->wrap(\&Math::Random::random_noncentral_f,$safeeval,'&math_random_noncentral_f'); 754: $safehole->wrap(\&Math::Random::random_normal,$safeeval,'&math_random_normal'); 755: $safehole->wrap(\&Math::Random::random_permutation,$safeeval,'&math_random_permutation'); 756: $safehole->wrap(\&Math::Random::random_permuted_index,$safeeval,'&math_random_permuted_index'); 757: $safehole->wrap(\&Math::Random::random_uniform,$safeeval,'&math_random_uniform'); 758: $safehole->wrap(\&Math::Random::random_poisson,$safeeval,'&math_random_poisson'); 759: $safehole->wrap(\&Math::Random::random_uniform_integer,$safeeval,'&math_random_uniform_integer'); 760: $safehole->wrap(\&Math::Random::random_negative_binomial,$safeeval,'&math_random_negative_binomial'); 761: $safehole->wrap(\&Math::Random::random_binomial,$safeeval,'&math_random_binomial'); 762: $safehole->wrap(\&Math::Random::random_seed_from_phrase,$safeeval,'&random_seed_from_phrase'); 763: $safehole->wrap(\&Math::Random::random_set_seed_from_phrase,$safeeval,'&random_set_seed_from_phrase'); 764: $safehole->wrap(\&Math::Random::random_get_seed,$safeeval,'&random_get_seed'); 765: $safehole->wrap(\&Math::Random::random_set_seed,$safeeval,'&random_set_seed'); 766: $safehole->wrap(\&Apache::lonxml::error,$safeeval,'&LONCAPA_INTERNAL_ERROR'); 767: $safehole->wrap(\&Apache::lonxml::debug,$safeeval,'&LONCAPA_INTERNAL_DEBUG'); 768: $safehole->wrap(\&Apache::caparesponse::get_sigrange,$safeeval,'&LONCAPA_INTERNAL_get_sigrange'); 769: 770: #need to inspect this class of ops 771: # $safeeval->deny(":base_orig"); 772: $safeeval->permit("require"); 773: $safeinit .= ';$external::target="'.$target.'";'; 774: my $rndseed; 775: my ($symb,$courseid,$domain,$name) = &Apache::lonxml::whichuser(); 776: $rndseed=&Apache::lonnet::rndseed($symb,$courseid,$domain,$name); 777: $safeinit .= ';$external::randomseed="'.$rndseed.'";'; 778: &Apache::lonxml::debug("Setting rndseed to $rndseed"); 779: &Apache::run::run($safeinit,$safeeval); 780: 781: } 782: 783: sub default_homework_load { 784: my ($safeeval)=@_; 785: &Apache::lonxml::debug('Loading default_homework'); 786: my $default=&Apache::lonnet::getfile('/home/httpd/html/res/adm/includes/default_homework.lcpm'); 787: if ($default eq -1) { 788: &Apache::lonxml::error("<b>Unable to find <i>default_homework.lcpm</i></b>"); 789: } else { 790: &Apache::run::run($default,$safeeval); 791: $Apache::lonxml::default_homework_loaded=1; 792: } 793: } 794: 795: my $metamode_was; 796: sub startredirection { 797: if (!$Apache::lonxml::redirection) { 798: $metamode_was=$Apache::lonxml::metamode; 799: } 800: $Apache::lonxml::metamode=0; 801: $Apache::lonxml::redirection++; 802: push (@Apache::lonxml::outputstack, ''); 803: } 804: 805: sub endredirection { 806: if (!$Apache::lonxml::redirection) { 807: &Apache::lonxml::error("Endredirection was called, before a startredirection, perhaps you have unbalanced tags. Some debuging information:".join ":",caller); 808: return ''; 809: } 810: $Apache::lonxml::redirection--; 811: if (!$Apache::lonxml::redirection) { 812: $Apache::lonxml::metamode=$metamode_was; 813: } 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: my @timers; 831: my $lasttime; 832: sub increasedepth { 833: my ($token) = @_; 834: $Apache::lonxml::depth++; 835: $Apache::lonxml::depthcounter[$Apache::lonxml::depth]++; 836: if ($Apache::lonxml::depthcounter[$Apache::lonxml::depth]==1) { 837: $Apache::lonxml::olddepth=$Apache::lonxml::depth; 838: } 839: my $time; 840: if ($Apache::lonxml::debug eq "1") { 841: push(@timers,[&gettimeofday()]); 842: $time=&tv_interval($lasttime); 843: $lasttime=[&gettimeofday()]; 844: } 845: my $spacing=' 'x($Apache::lonxml::depth-1); 846: my $curdepth=join('_',@Apache::lonxml::depthcounter); 847: &Apache::lonxml::debug("s$spacing$Apache::lonxml::depth : $Apache::lonxml::olddepth : $curdepth : $token->[1] : $time : \n"); 848: #print "<br />s $Apache::lonxml::depth : $Apache::lonxml::olddepth : $curdepth : $token->[1]\n"; 849: } 850: 851: sub decreasedepth { 852: my ($token) = @_; 853: $Apache::lonxml::depth--; 854: if ($Apache::lonxml::depth<$Apache::lonxml::olddepth-1) { 855: $#Apache::lonxml::depthcounter--; 856: $Apache::lonxml::olddepth=$Apache::lonxml::depth+1; 857: } 858: if ( $Apache::lonxml::depth < -1) { 859: &Apache::lonxml::warning(&mt("Missing tags, unable to properly run file.")); 860: $Apache::lonxml::depth='-1'; 861: } 862: my ($timer,$time); 863: if ($Apache::lonxml::debug eq "1") { 864: $timer=pop(@timers); 865: $time=&tv_interval($lasttime); 866: $lasttime=[&gettimeofday()]; 867: } 868: my $spacing=' 'x$Apache::lonxml::depth; 869: my $curdepth=join('_',@Apache::lonxml::depthcounter); 870: &Apache::lonxml::debug("e$spacing$Apache::lonxml::depth : $Apache::lonxml::olddepth : $curdepth : $token->[1] : $time : ".&tv_interval($timer)."\n"); 871: #print "<br />e $Apache::lonxml::depth : $Apache::lonxml::olddepth : $token->[1] : $curdepth\n"; 872: } 873: 874: sub get_all_text_unbalanced { 875: #there is a copy of this in lonpublisher.pm 876: my($tag,$pars)= @_; 877: my $token; 878: my $result=''; 879: $tag='<'.$tag.'>'; 880: while ($token = $$pars[-1]->get_token) { 881: if (($token->[0] eq 'T')||($token->[0] eq 'C')||($token->[0] eq 'D')) { 882: $result.=$token->[1]; 883: } elsif ($token->[0] eq 'PI') { 884: $result.=$token->[2]; 885: } elsif ($token->[0] eq 'S') { 886: $result.=$token->[4]; 887: } elsif ($token->[0] eq 'E') { 888: $result.=$token->[2]; 889: } 890: if ($result =~ /\Q$tag\E/is) { 891: ($result,my $redo)=$result =~ /(.*)\Q$tag\E(.*)/is; 892: #&Apache::lonxml::debug('Got a winner with leftovers ::'.$2); 893: #&Apache::lonxml::debug('Result is :'.$1); 894: $redo=$tag.$redo; 895: &Apache::lonxml::newparser($pars,\$redo); 896: last; 897: } 898: } 899: return $result 900: } 901: 902: sub increment_counter { 903: my ($increment) = @_; 904: if (defined($increment) && $increment gt 0) { 905: $Apache::lonxml::counter+=$increment; 906: } else { 907: $Apache::lonxml::counter++; 908: } 909: $Apache::lonxml::counter_changed=1; 910: } 911: 912: sub init_counter { 913: if (defined($ENV{'form.counter'})) { 914: $Apache::lonxml::counter=$ENV{'form.counter'}; 915: $Apache::lonxml::counter_changed=0; 916: } else { 917: $Apache::lonxml::counter=1; 918: $Apache::lonxml::counter_changed=1; 919: } 920: } 921: 922: sub store_counter { 923: &Apache::lonnet::appenv(('form.counter' => $Apache::lonxml::counter)); 924: return ''; 925: } 926: 927: sub get_all_text { 928: my($tag,$pars,$style)= @_; 929: my $gotfullstack=1; 930: if (ref($pars) ne 'ARRAY') { 931: $gotfullstack=0; 932: $pars=[$pars]; 933: } 934: if (ref($style) ne 'HASH') { 935: $style={}; 936: } 937: my $depth=0; 938: my $token; 939: my $result=''; 940: if ( $tag =~ m:^/: ) { 941: my $tag=substr($tag,1); 942: #&Apache::lonxml::debug("have:$tag:"); 943: my $top_empty=0; 944: while (($depth >=0) && ($#$pars > -1) && (!$top_empty)) { 945: while (($depth >=0) && ($token = $$pars[-1]->get_token)) { 946: #&Apache::lonxml::debug("e token:$token->[0]:$depth:$token->[1]:".$#$pars.":".$#Apache::lonxml::pwd); 947: if (($token->[0] eq 'T')||($token->[0] eq 'C')||($token->[0] eq 'D')) { 948: $result.=$token->[1]; 949: } elsif ($token->[0] eq 'PI') { 950: $result.=$token->[2]; 951: } elsif ($token->[0] eq 'S') { 952: if ($token->[1] =~ /^\Q$tag\E$/i) { $depth++; } 953: if ($token->[1] =~ /^LONCAPA_INTERNAL_TURN_STYLE_ON$/) { $Apache::lonxml::usestyle=1; } 954: if ($token->[1] =~ /^LONCAPA_INTERNAL_TURN_STYLE_OFF$/) { $Apache::lonxml::usestyle=0; } 955: $result.=$token->[4]; 956: } elsif ($token->[0] eq 'E') { 957: if ( $token->[1] =~ /^\Q$tag\E$/i) { $depth--; } 958: #skip sending back the last end tag 959: if ($depth == 0 && exists($$style{'/'.$token->[1]}) && $Apache::lonxml::usestyle) { 960: my $string= 961: '<LONCAPA_INTERNAL_TURN_STYLE_OFF end="yes" />'. 962: $$style{'/'.$token->[1]}. 963: $token->[2]. 964: '<LONCAPA_INTERNAL_TURN_STYLE_ON />'; 965: &Apache::lonxml::newparser($pars,\$string); 966: #&Apache::lonxml::debug("reParsing $string"); 967: next; 968: } 969: if ($depth > -1) { 970: $result.=$token->[2]; 971: } else { 972: $$pars[-1]->unget_token($token); 973: } 974: } 975: } 976: if (($depth >=0) && ($#$pars == 0) ) { $top_empty=1; } 977: if (($depth >=0) && ($#$pars > 0) ) { 978: pop(@$pars); 979: pop(@Apache::lonxml::pwd); 980: } 981: } 982: if ($top_empty && $depth >= 0) { 983: #never found the end tag ran out of text, throw error send back blank 984: &error('Never found end tag for <'.$tag. 985: '> current string <pre>'. 986: &HTML::Entities::encode($result,'<>&"'). 987: '</pre>'); 988: if ($gotfullstack) { 989: my $newstring='</'.$tag.'>'.$result; 990: &Apache::lonxml::newparser($pars,\$newstring); 991: } 992: $result=''; 993: } 994: } else { 995: while ($#$pars > -1) { 996: while ($token = $$pars[-1]->get_token) { 997: #&Apache::lonxml::debug("s token:$token->[0]:$depth:$token->[1]"); 998: if (($token->[0] eq 'T')||($token->[0] eq 'C')|| 999: ($token->[0] eq 'D')) { 1000: $result.=$token->[1]; 1001: } elsif ($token->[0] eq 'PI') { 1002: $result.=$token->[2]; 1003: } elsif ($token->[0] eq 'S') { 1004: if ( $token->[1] =~ /^\Q$tag\E$/i) { 1005: $$pars[-1]->unget_token($token); last; 1006: } else { 1007: $result.=$token->[4]; 1008: } 1009: if ($token->[1] =~ /^LONCAPA_INTERNAL_TURN_STYLE_ON$/) { $Apache::lonxml::usestyle=1; } 1010: if ($token->[1] =~ /^LONCAPA_INTERNAL_TURN_STYLE_OFF$/) { $Apache::lonxml::usestyle=0; } 1011: } elsif ($token->[0] eq 'E') { 1012: $result.=$token->[2]; 1013: } 1014: } 1015: if (($#$pars > 0) ) { 1016: pop(@$pars); 1017: pop(@Apache::lonxml::pwd); 1018: } else { last; } 1019: } 1020: } 1021: #&Apache::lonxml::debug("Exit:$result:"); 1022: return $result 1023: } 1024: 1025: sub newparser { 1026: my ($parser,$contentref,$dir) = @_; 1027: push (@$parser,HTML::LCParser->new($contentref)); 1028: $$parser['-1']->xml_mode('1'); 1029: if ( $dir eq '' ) { 1030: push (@Apache::lonxml::pwd, $Apache::lonxml::pwd[$#Apache::lonxml::pwd]); 1031: } else { 1032: push (@Apache::lonxml::pwd, $dir); 1033: } 1034: } 1035: 1036: sub parstring { 1037: my ($token) = @_; 1038: my $temp=''; 1039: foreach (@{$token->[3]}) { 1040: unless ($_=~/\W/) { 1041: my $val=$token->[2]->{$_}; 1042: $val =~ s/([\%\@\\\"\'])/\\$1/g; 1043: $val =~ s/(\$[^{a-zA-Z_])/\\$1/g; 1044: $val =~ s/(\$)$/\\$1/; 1045: #if ($val =~ m/^[\%\@]/) { $val="\\".$val; } 1046: $temp .= "my \$$_=\"$val\";"; 1047: } 1048: } 1049: return $temp; 1050: } 1051: 1052: sub writeallows { 1053: unless ($#extlinks>=0) { return; } 1054: my $thisurl='/res/'.&Apache::lonnet::declutter(shift); 1055: if ($ENV{'httpref.'.$thisurl}) { 1056: $thisurl=$ENV{'httpref.'.$thisurl}; 1057: } 1058: my $thisdir=$thisurl; 1059: $thisdir=~s/\/[^\/]+$//; 1060: my %httpref=(); 1061: foreach (@extlinks) { 1062: $httpref{'httpref.'. 1063: &Apache::lonnet::hreflocation($thisdir,$_)}=$thisurl; 1064: } 1065: @extlinks=(); 1066: &Apache::lonnet::appenv(%httpref); 1067: } 1068: 1069: sub register_ssi { 1070: my ($url,%form)=@_; 1071: push (@Apache::lonxml::ssi_info,{'url'=>$url,'form'=>\%form}); 1072: return ''; 1073: } 1074: 1075: sub do_registered_ssi { 1076: foreach my $info (@Apache::lonxml::ssi_info) { 1077: my %form=%{ $info->{'form'}}; 1078: my $url=$info->{'url'}; 1079: &Apache::lonnet::ssi($url,%form); 1080: } 1081: } 1082: # 1083: # Afterburner handles anchors, highlights and links 1084: # 1085: sub afterburn { 1086: my $result=shift; 1087: &Apache::loncommon::get_unprocessed_cgi($ENV{'QUERY_STRING'}, 1088: ['highlight','anchor','link']); 1089: if ($ENV{'form.highlight'}) { 1090: foreach (split(/\,/,$ENV{'form.highlight'})) { 1091: my $anchorname=$_; 1092: my $matchthis=$anchorname; 1093: $matchthis=~s/\_+/\\s\+/g; 1094: $result=~s/(\Q$matchthis\E)/\<font color=\"red\"\>$1\<\/font\>/gs; 1095: } 1096: } 1097: if ($ENV{'form.link'}) { 1098: foreach (split(/\,/,$ENV{'form.link'})) { 1099: my ($anchorname,$linkurl)=split(/\>/,$_); 1100: my $matchthis=$anchorname; 1101: $matchthis=~s/\_+/\\s\+/g; 1102: $result=~s/(\Q$matchthis\E)/\<a href=\"$linkurl\"\>$1\<\/a\>/gs; 1103: } 1104: } 1105: if ($ENV{'form.anchor'}) { 1106: my $anchorname=$ENV{'form.anchor'}; 1107: my $matchthis=$anchorname; 1108: $matchthis=~s/\_+/\\s\+/g; 1109: $result=~s/(\Q$matchthis\E)/\<a name=\"$anchorname\"\>$1\<\/a\>/s; 1110: $result.=(<<"ENDSCRIPT"); 1111: <script type="text/javascript"> 1112: document.location.hash='$anchorname'; 1113: </script> 1114: ENDSCRIPT 1115: } 1116: return $result; 1117: } 1118: 1119: sub storefile { 1120: my ($file,$contents)=@_; 1121: &Apache::lonnet::correct_line_ends(\$contents); 1122: if (my $fh=Apache::File->new('>'.$file)) { 1123: print $fh $contents; 1124: $fh->close(); 1125: return 1; 1126: } else { 1127: &warning("Unable to save file $file"); 1128: return 0; 1129: } 1130: } 1131: 1132: sub createnewhtml { 1133: my $title=&mt('Title of document goes here'); 1134: my $body=&mt('Body of document goes here'); 1135: my $filecontents=(<<SIMPLECONTENT); 1136: <!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.1//EN" "http://www.w3.org/TR/xhtml/11/DTD/xhtml11.dtd"> 1137: <html> 1138: <head> 1139: <title>$title</title> 1140: </head> 1141: <body bgcolor="#FFFFFF"> 1142: $body 1143: </body> 1144: </html> 1145: SIMPLECONTENT 1146: return $filecontents; 1147: } 1148: 1149: sub createnewsty { 1150: my $filecontents=(<<SIMPLECONTENT); 1151: <definetag name=""> 1152: <render> 1153: <web></web> 1154: <tex></tex> 1155: </render> 1156: </definetag> 1157: SIMPLECONTENT 1158: return $filecontents; 1159: } 1160: 1161: 1162: sub inserteditinfo { 1163: my ($result,$filecontents,$filetype)=@_; 1164: $filecontents = &HTML::Entities::encode($filecontents,'<>&"'); 1165: # my $editheader='<a href="#editsection">Edit below</a><hr />'; 1166: my $xml_help = ''; 1167: my $initialize=''; 1168: if ($filetype eq 'html') { 1169: my $addbuttons=&Apache::lonhtmlcommon::htmlareaaddbuttons(); 1170: $initialize=&Apache::lonhtmlcommon::htmlareaheaders(). 1171: &Apache::lonhtmlcommon::spellheader(); 1172: if (!&Apache::lonhtmlcommon::htmlareablocked() && 1173: &Apache::lonhtmlcommon::htmlareabrowser()) { 1174: $initialize.=(<<FULLPAGE); 1175: <script type="text/javascript"> 1176: $addbuttons 1177: 1178: HTMLArea.loadPlugin("FullPage"); 1179: 1180: function initDocument() { 1181: var editor=new HTMLArea("filecont",config); 1182: editor.registerPlugin(FullPage); 1183: editor.generate(); 1184: } 1185: </script> 1186: FULLPAGE 1187: } else { 1188: $initialize.=(<<FULLPAGE); 1189: <script type="text/javascript"> 1190: $addbuttons 1191: function initDocument() { 1192: } 1193: </script> 1194: FULLPAGE 1195: } 1196: $result=~s/\<body([^\>]*)\>/\<body onload="initDocument()" $1\>/i; 1197: $xml_help=&Apache::loncommon::helpLatexCheatsheet(); 1198: } 1199: my $cleanbut = ''; 1200: if ($filetype eq 'html') { 1201: $cleanbut='<input type="submit" name="attemptclean" value="'. 1202: &mt('Save and then attempt to clean HTML').'" />'; 1203: } 1204: my $titledisplay=&display_title(); 1205: my %lt=&Apache::lonlocal::texthash('st' => 'Save this', 1206: 'vi' => 'View', 1207: 'ed' => 'Edit'); 1208: my $buttons=(<<BUTTONS); 1209: $cleanbut 1210: <input type="submit" name="savethisfile" accesskey="s" value="$lt{'st'}" /> 1211: <input type="submit" name="viewmode" accesskey="v" value="$lt{'vi'}" /> 1212: BUTTONS 1213: $buttons.=&Apache::lonhtmlcommon::spelllink('xmledit','filecont'); 1214: $buttons.=&Apache::lonhtmlcommon::htmlareaselectactive('filecont'); 1215: my $editfooter=(<<ENDFOOTER); 1216: $initialize 1217: <hr /> 1218: <a name="editsection" /> 1219: <form method="post" name="xmledit"> 1220: $xml_help 1221: <input type="hidden" name="editmode" value="$lt{'ed'}" /> 1222: $buttons<br /> 1223: <textarea cols="80" rows="44" name="filecont" id="filecont">$filecontents</textarea> 1224: <br />$buttons 1225: <br /> 1226: </form> 1227: $titledisplay 1228: </body> 1229: ENDFOOTER 1230: # $result=~s/(\<body[^\>]*\>)/$1$editheader/is; 1231: $result=~s/(\<\/body\>)/$editfooter/is; 1232: return $result; 1233: } 1234: 1235: sub get_target { 1236: my $viewgrades=&Apache::lonnet::allowed('vgr',$ENV{'request.course.id'}); 1237: if ( $ENV{'request.state'} eq 'published') { 1238: if ( defined($ENV{'form.grade_target'}) 1239: && ($viewgrades == 'F' )) { 1240: return ($ENV{'form.grade_target'}); 1241: } elsif (defined($ENV{'form.grade_target'})) { 1242: if (($ENV{'form.grade_target'} eq 'web') || 1243: ($ENV{'form.grade_target'} eq 'tex') ) { 1244: return $ENV{'form.grade_target'} 1245: } else { 1246: return 'web'; 1247: } 1248: } else { 1249: return 'web'; 1250: } 1251: } elsif ($ENV{'request.state'} eq 'construct') { 1252: if ( defined($ENV{'form.grade_target'})) { 1253: return ($ENV{'form.grade_target'}); 1254: } else { 1255: return 'web'; 1256: } 1257: } else { 1258: return 'web'; 1259: } 1260: } 1261: 1262: sub handler { 1263: my $request=shift; 1264: 1265: my $target=&get_target(); 1266: 1267: $Apache::lonxml::debug=$ENV{'user.debug'}; 1268: 1269: if ($ENV{'browser.mathml'}) { 1270: &Apache::loncommon::content_type($request,'text/xml'); 1271: } else { 1272: &Apache::loncommon::content_type($request,'text/html'); 1273: } 1274: &Apache::loncommon::no_cache($request); 1275: $request->set_last_modified(&Apache::lonnet::metadata($request->uri, 1276: 'lastrevisiondate')); 1277: $request->send_http_header; 1278: 1279: return OK if $request->header_only; 1280: 1281: 1282: my $file=&Apache::lonnet::filelocation("",$request->uri); 1283: my $filetype; 1284: if ($file =~ /\.sty$/) { 1285: $filetype='sty'; 1286: } else { 1287: $filetype='html'; 1288: } 1289: # 1290: # Edit action? Save file. 1291: # 1292: unless ($ENV{'request.state'} eq 'published') { 1293: if (($ENV{'form.savethisfile'}) || ($ENV{'form.attemptclean'})) { 1294: if (&storefile($file,$ENV{'form.filecont'})) { 1295: &Apache::lonxml::info("<font COLOR=\"#0000FF\">". 1296: &mt('Updated').": ". 1297: &Apache::lonlocal::locallocaltime(time). 1298: " </font>"); 1299: } 1300: } 1301: } 1302: my %mystyle; 1303: my $result = ''; 1304: my $filecontents=&Apache::lonnet::getfile($file); 1305: if ($filecontents eq -1) { 1306: my $bodytag=&Apache::loncommon::bodytag('File Error'); 1307: my $fnf=&mt('File not found'); 1308: $result=(<<ENDNOTFOUND); 1309: <html> 1310: <head> 1311: <title>$fnf</title> 1312: </head> 1313: $bodytag 1314: <b>$fnf: $file</b> 1315: </body> 1316: </html> 1317: ENDNOTFOUND 1318: $filecontents=''; 1319: if ($ENV{'request.state'} ne 'published') { 1320: if ($filetype eq 'sty') { 1321: $filecontents=&createnewsty(); 1322: } else { 1323: $filecontents=&createnewhtml(); 1324: } 1325: $ENV{'form.editmode'}='Edit'; #force edit mode 1326: } 1327: } else { 1328: unless ($ENV{'request.state'} eq 'published') { 1329: if ($filecontents=~/BEGIN LON-CAPA Internal/) { 1330: &Apache::lonxml::error(&mt('This file appears to be a rendering of a Lon-CAPA resource. If this is correct, this resource will act very oddly and incorrectly.')); 1331: } 1332: 1333: if ($ENV{'form.attemptclean'}) { 1334: $filecontents=&htmlclean($filecontents,1); 1335: } 1336: # 1337: # we are in construction space, see if edit mode forced 1338: &Apache::loncommon::get_unprocessed_cgi 1339: ($ENV{'QUERY_STRING'},['editmode']); 1340: } 1341: if (!$ENV{'form.editmode'} || $ENV{'form.viewmode'}) { 1342: $result = &Apache::lonxml::xmlparse($request,$target,$filecontents, 1343: '',%mystyle); 1344: } 1345: } 1346: 1347: # 1348: # Edit action? Insert editing commands 1349: # 1350: unless ($ENV{'request.state'} eq 'published') { 1351: if ($ENV{'form.editmode'} && (!($ENV{'form.viewmode'}))) { 1352: my $displayfile=$request->uri; 1353: $displayfile=~s/^\/[^\/]*//; 1354: my $bodytag='<body bgcolor="#FFFFFF">'; 1355: if ($ENV{'environment.remote'} eq 'off') { 1356: $bodytag=&Apache::loncommon::bodytag(); 1357: } 1358: $result='<html>'.$bodytag. 1359: &Apache::lonxml::message_location().'<h3>'. 1360: $displayfile. 1361: '</h3></body></html>'; 1362: $result=&inserteditinfo($result,$filecontents,$filetype); 1363: } 1364: } 1365: if ($filetype eq 'html') { writeallows($request->uri); } 1366: 1367: 1368: &Apache::lonxml::add_messages(\$result); 1369: $request->print($result); 1370: 1371: return OK; 1372: } 1373: 1374: sub display_title { 1375: my $result; 1376: if ($ENV{'request.state'} eq 'construct') { 1377: my $title=&Apache::lonnet::gettitle(); 1378: if (!defined($title) || $title eq '') { 1379: $title = $ENV{'request.filename'}; 1380: $title = substr($title, rindex($title, '/') + 1); 1381: } 1382: $result = "<script type='text/javascript'>top.document.title = '$title - LON-CAPA Construction Space';</script>"; 1383: } 1384: return $result; 1385: } 1386: 1387: sub debug { 1388: if ($Apache::lonxml::debug eq "1") { 1389: $|=1; 1390: my $request=$Apache::lonxml::request; 1391: if (!$request) { $request=Apache->request; } 1392: $request->print('<font size="-2"><pre>DEBUG:'.&HTML::Entities::encode($_[0],'<>&"')."</pre></font>\n"); 1393: #&Apache::lonnet::logthis($_[0]); 1394: } 1395: } 1396: 1397: sub show_error_warn_msg { 1398: if ($ENV{'request.filename'} eq '/home/httpd/html/res/lib/templates/simpleproblem.problem' && 1399: &Apache::lonnet::allowed('mdc',$ENV{'request.course.id'})) { 1400: return 1; 1401: } 1402: return (($Apache::lonxml::debug eq 1) || 1403: ($ENV{'request.state'} eq 'construct') || 1404: ($Apache::lonhomework::browse eq 'F' 1405: && 1406: $ENV{'form.show_errors'} eq 'on')); 1407: } 1408: 1409: sub error { 1410: $errorcount++; 1411: if ( &show_error_warn_msg() ) { 1412: # If printing in construction space, put the error inside <pre></pre> 1413: push(@Apache::lonxml::error_messages, 1414: $Apache::lonxml::warnings_error_header. 1415: "<b>ERROR:</b>".join("<br />\n",@_)."<br />\n"); 1416: $Apache::lonxml::warnings_error_header=''; 1417: } else { 1418: my $errormsg; 1419: my ($symb)=&Apache::lonnet::symbread(); 1420: if ( !$symb ) { 1421: #public or browsers 1422: $errormsg=&mt("An error occured while processing this resource. The author has been notified."); 1423: } 1424: #notify author 1425: &Apache::lonmsg::author_res_msg($ENV{'request.filename'},join('<br />',@_)); 1426: #notify course 1427: if ( $symb && $ENV{'request.course.id'} ) { 1428: my (undef,%users)=&Apache::lonfeedback::decide_receiver(undef,0,1,1,1); 1429: my $declutter=&Apache::lonnet::declutter($ENV{'request.filename'}); 1430: my @userlist; 1431: foreach (keys %users) { 1432: my ($user,$domain) = split(/:/, $_); 1433: push(@userlist,"$user\@$domain"); 1434: &Apache::lonmsg::user_normal_msg($user,$domain, 1435: "Error [$declutter]",join('<br />',@_)); 1436: } 1437: if ($ENV{'request.role.adv'}) { 1438: $errormsg=&mt("An error occured while processing this resource. The course personnel ([_1]) and the author have been notified.",join(', ',@userlist)); 1439: } else { 1440: $errormsg=&mt("An error occured while processing this resource. The instructor has been notified."); 1441: } 1442: } 1443: push(@Apache::lonxml::error_messages,"<b>$errormsg</b> <br />"); 1444: } 1445: } 1446: 1447: sub warning { 1448: $warningcount++; 1449: 1450: if ($ENV{'form.grade_target'} ne 'tex') { 1451: if ( &show_error_warn_msg() ) { 1452: my $request=$Apache::lonxml::request; 1453: if (!$request) { $request=Apache->request; } 1454: push(@Apache::lonxml::warning_messages, 1455: $Apache::lonxml::warnings_error_header. 1456: "<b>W</b>ARNING<b>:</b>".join('<br />',@_)."<br />\n"); 1457: $Apache::lonxml::warnings_error_header=''; 1458: } 1459: } 1460: } 1461: 1462: sub info { 1463: if ($ENV{'form.grade_target'} ne 'tex' 1464: && $ENV{'request.state'} eq 'construct') { 1465: push(@Apache::lonxml::info_messages,join('<br />',@_)."<br />\n"); 1466: } 1467: } 1468: 1469: sub message_location { 1470: return '__LONCAPA_INTERNAL_MESSAGE_LOCATION__'; 1471: } 1472: 1473: sub add_messages { 1474: my ($msg)=@_; 1475: my $result=join(' ', 1476: @Apache::lonxml::info_messages, 1477: @Apache::lonxml::error_messages, 1478: @Apache::lonxml::warning_messages); 1479: undef(@Apache::lonxml::info_messages); 1480: undef(@Apache::lonxml::error_messages); 1481: undef(@Apache::lonxml::warning_messages); 1482: $$msg=~s/__LONCAPA_INTERNAL_MESSAGE_LOCATION__/$result/; 1483: $$msg=~s/__LONCAPA_INTERNAL_MESSAGE_LOCATION__//g; 1484: } 1485: 1486: sub get_param { 1487: my ($param,$parstack,$safeeval,$context,$case_insensitive) = @_; 1488: if ( ! $context ) { $context = -1; } 1489: my $args =''; 1490: if ( $#$parstack > (-2-$context) ) { $args=$$parstack[$context]; } 1491: if ( ! $Apache::lonxml::usestyle ) { 1492: $args=$Apache::lonxml::style_values.$args; 1493: } 1494: if ( ! $args ) { return undef; } 1495: if ( $case_insensitive ) { 1496: if ($args =~ s/(my \$)(\Q$param\E)(=\")/$1.lc($2).$3/ei) { 1497: return &Apache::run::run("{$args;".'return $'.$param.'}', 1498: $safeeval); #' 1499: } else { 1500: return undef; 1501: } 1502: } else { 1503: if ( $args =~ /my \$\Q$param\E=\"/ ) { 1504: return &Apache::run::run("{$args;".'return $'.$param.'}', 1505: $safeeval); #' 1506: } else { 1507: return undef; 1508: } 1509: } 1510: } 1511: 1512: sub get_param_var { 1513: my ($param,$parstack,$safeeval,$context,$case_insensitive) = @_; 1514: if ( ! $context ) { $context = -1; } 1515: my $args =''; 1516: if ( $#$parstack > (-2-$context) ) { $args=$$parstack[$context]; } 1517: if ( ! $Apache::lonxml::usestyle ) { 1518: $args=$Apache::lonxml::style_values.$args; 1519: } 1520: &Apache::lonxml::debug("Args are $args param is $param"); 1521: if ($case_insensitive) { 1522: if (! ($args=~s/(my \$)(\Q$param\E)(=\")/$1.lc($2).$3/ei)) { 1523: return undef; 1524: } 1525: } elsif ( $args !~ /my \$\Q$param\E=\"/ ) { return undef; } 1526: my $value=&Apache::run::run("{$args;".'return $'.$param.'}',$safeeval); #' 1527: &Apache::lonxml::debug("first run is $value"); 1528: if ($value =~ /^[\$\@\%][a-zA-Z_]\w*$/) { 1529: &Apache::lonxml::debug("doing second"); 1530: my @result=&Apache::run::run("return $value",$safeeval,1); 1531: if (!defined($result[0])) { 1532: return $value 1533: } else { 1534: if (wantarray) { return @result; } else { return $result[0]; } 1535: } 1536: } else { 1537: return $value; 1538: } 1539: } 1540: 1541: sub register_insert { 1542: my @data = split /\n/, &Apache::lonnet::getfile('/home/httpd/lonTabs/insertlist.tab'); 1543: my $i; 1544: my $tagnum=0; 1545: my @order; 1546: for ($i=0;$i < $#data; $i++) { 1547: my $line = $data[$i]; 1548: if ( $line =~ /^\#/ || $line =~ /^\s*\n/) { next; } 1549: if ( $line =~ /TABLE/ ) { last; } 1550: my ($tag,$descrip,$color,$function,$show,$helpfile,$helpdesc) = split(/,/, $line); 1551: if ($tag) { 1552: $insertlist{"$tagnum.tag"} = $tag; 1553: $insertlist{"$tagnum.description"} = $descrip; 1554: $insertlist{"$tagnum.color"} = $color; 1555: $insertlist{"$tagnum.function"} = $function; 1556: if (!defined($show)) { $show='yes'; } 1557: $insertlist{"$tagnum.show"}= $show; 1558: $insertlist{"$tagnum.helpfile"} = $helpfile; 1559: $insertlist{"$tagnum.helpdesc"} = $helpdesc; 1560: $insertlist{"$tag.num"}=$tagnum; 1561: $tagnum++; 1562: } 1563: } 1564: $i++; #skipping TABLE line 1565: $tagnum = 0; 1566: for (;$i < $#data;$i++) { 1567: my $line = $data[$i]; 1568: my ($mnemonic,@which) = split(/ +/,$line); 1569: my $tag = $insertlist{"$tagnum.tag"}; 1570: for (my $j=0;$j <=$#which;$j++) { 1571: if ( $which[$j] eq 'Y' ) { 1572: if ($insertlist{"$j.show"} ne 'no') { 1573: push(@{ $insertlist{"$tag.which"} },$j); 1574: } 1575: } 1576: } 1577: $tagnum++; 1578: } 1579: } 1580: 1581: sub description { 1582: my ($token)=@_; 1583: my $tagnum; 1584: my $tag=$token->[1]; 1585: foreach my $namespace (reverse @Apache::lonxml::namespace) { 1586: my $testtag=$namespace.'::'.$tag; 1587: $tagnum=$insertlist{"$testtag.num"}; 1588: if (defined($tagnum)) { last; } 1589: } 1590: if (!defined ($tagnum)) { $tagnum=$Apache::lonxml::insertlist{"$tag.num"}; } 1591: return $insertlist{$tagnum.'.description'}; 1592: } 1593: 1594: # Returns a list containing the help file, and the description 1595: sub helpinfo { 1596: my ($token)=@_; 1597: my $tagnum; 1598: my $tag=$token->[1]; 1599: foreach my $namespace (reverse @Apache::lonxml::namespace) { 1600: my $testtag=$namespace.'::'.$tag; 1601: $tagnum=$insertlist{"$testtag.num"}; 1602: if (defined($tagnum)) { last; } 1603: } 1604: if (!defined ($tagnum)) { $tagnum=$Apache::lonxml::insertlist{"$tag.num"}; } 1605: return ($insertlist{$tagnum.'.helpfile'}, $insertlist{$tagnum.'.helpdesc'}); 1606: } 1607: 1608: # ----------------------------------------------------------------- whichuser 1609: # returns a list of $symb, $courseid, $domain, $name that is correct for 1610: # calls to lonnet functions for this setup. 1611: # - looks for form.grade_ parameters 1612: sub whichuser { 1613: my ($passedsymb)=@_; 1614: my ($symb,$courseid,$domain,$name,$publicuser); 1615: if (defined($ENV{'form.grade_symb'})) { 1616: my ($tmp_courseid)= 1617: &Apache::loncommon::get_env_multiple('form.grade_courseid'); 1618: my $allowed=&Apache::lonnet::allowed('vgr',$tmp_courseid); 1619: if (!$allowed && 1620: exists($ENV{'request.course.sec'}) && 1621: $ENV{'request.course.sec'} !~ /^\s*$/) { 1622: $allowed=&Apache::lonnet::allowed('vgr',$tmp_courseid. 1623: '/'.$ENV{'request.course.sec'}); 1624: } 1625: if ($allowed) { 1626: ($symb)=&Apache::loncommon::get_env_multiple('form.grade_symb'); 1627: $courseid=$tmp_courseid; 1628: ($domain)=&Apache::loncommon::get_env_multiple('form.grade_domain'); 1629: ($name)=&Apache::loncommon::get_env_multiple('form.grade_username'); 1630: return ($symb,$courseid,$domain,$name,$publicuser); 1631: } 1632: } 1633: if (!$passedsymb) { 1634: $symb=&Apache::lonnet::symbread(); 1635: } else { 1636: $symb=$passedsymb; 1637: } 1638: $courseid=$ENV{'request.course.id'}; 1639: $domain=$ENV{'user.domain'}; 1640: $name=$ENV{'user.name'}; 1641: if ($name eq 'public' && $domain eq 'public') { 1642: if (!defined($ENV{'form.username'})) { 1643: $ENV{'form.username'}.=time.rand(10000000); 1644: } 1645: $name.=$ENV{'form.username'}; 1646: } 1647: return ($symb,$courseid,$domain,$name,$publicuser); 1648: } 1649: 1650: 1; 1651: __END__ 1652: 1653: