loncom/xml/lonxml.pm - view

File: [LON-CAPA] / loncom / xml / lonxml.pm
Revision 1.252: download - view: text, annotated - select for diffs
Fri May 16 18:34:56 2003 UTC (21 years ago) by bowersj2
Branches: MAIN
CVS tags: HEAD

If we're editing the file, show the filename in the title of the frame,
which will show in the tabs.

(Guy: Please make sure that $ENV{'form.editmode'} is true if and only
if we're in editing mode; I think this is so but I don't want to be
wrong.)

Fixes bug 1448.

1: # The LearningOnline Network with CAPA 2: # XML Parser Module 3: # 4: # $Id: lonxml.pm,v 1.252 2003/05/16 18:34:56 bowersj2 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 $warningcount); 63: use strict; 64: use HTML::LCParser(); 65: use HTML::TreeBuilder(); 66: use HTML::Entities(); 67: use Safe(); 68: use Safe::Hole(); 69: use Math::Cephes(); 70: use Math::Random(); 71: use Opcode(); 72: 73: sub register { 74: my ($space,@taglist) = @_; 75: foreach my $temptag (@taglist) { 76: push(@{ $Apache::lonxml::alltags{$temptag} },$space); 77: } 78: } 79: 80: sub deregister { 81: my ($space,@taglist) = @_; 82: foreach my $temptag (@taglist) { 83: my $tempspace = $Apache::lonxml::alltags{$temptag}[-1]; 84: if ($tempspace eq $space) { 85: pop(@{ $Apache::lonxml::alltags{$temptag} }); 86: } 87: } 88: #&printalltags(); 89: } 90: 91: use Apache::Constants qw(:common); 92: use Apache::lontexconvert(); 93: use Apache::style(); 94: use Apache::run(); 95: use Apache::londefdef(); 96: use Apache::scripttag(); 97: use Apache::edit(); 98: use Apache::lonnet(); 99: use Apache::File(); 100: use Apache::loncommon(); 101: use Apache::lonfeedback(); 102: use Apache::lonmsg(); 103: use Apache::loncacc(); 104: 105: #================================================== Main subroutine: xmlparse 106: #debugging control, to turn on debugging modify the correct handler 107: $Apache::lonxml::debug=0; 108: 109: # keeps count of the number of warnings and errors generated in a parse 110: $warningcount=0; 111: $errorcount=0; 112: 113: #path to the directory containing the file currently being processed 114: @pwd=(); 115: 116: #these two are used for capturing a subset of the output for later processing, 117: #don't touch them directly use &startredirection and &endredirection 118: @outputstack = (); 119: $redirection = 0; 120: 121: #controls wheter the <import> tag actually does 122: $import = 1; 123: @extlinks=(); 124: 125: # meta mode is a bit weird only some output is to be turned off 126: #<output> tag turns metamode off (defined in londefdef.pm) 127: $metamode = 0; 128: 129: # turns on and of run::evaluate actually derefencing var refs 130: $evaluate = 1; 131: 132: # data structure for eidt mode, determines what tags can go into what other tags 133: %insertlist=(); 134: 135: # stores the list of active tag namespaces 136: @namespace=(); 137: 138: # if 0 all high ASCII characters will be encoded into HTML Entities 139: $prevent_entity_encode=0; 140: 141: # has the dynamic menu been updated to know about this resource 142: $Apache::lonxml::registered=0; 143: 144: # a pointer the the Apache request object 145: $Apache::lonxml::request=''; 146: 147: # a problem number counter, and check on ether it is used 148: $Apache::lonxml::counter=1; 149: $Apache::lonxml::counter_changed=0; 150: 151: #internal check on whether to look at style defs 152: $Apache::lonxml::usestyle=1; 153: 154: sub xmlbegin { 155: my $output=''; 156: if ($ENV{'browser.mathml'}) { 157: $output='<?xml version="1.0"?>' 158: .'<?xml-stylesheet type="text/css" href="/adm/MathML/mathml.css"?>' 159: .'<!DOCTYPE html SYSTEM "/adm/MathML/mathml.dtd" ' 160: .'[<!ENTITY mathns "http://www.w3.org/1998/Math/MathML">]>' 161: .'<html xmlns:math="http://www.w3.org/1998/Math/MathML" ' 162: .'xmlns="http://www.w3.org/TR/REC-html40">'; 163: } else { 164: $output='<html>'; 165: } 166: return $output; 167: } 168: 169: sub xmlend { 170: my ($discussiononly,$symb)=@_; 171: my $discussion=''; 172: if ($ENV{'request.course.id'}) { 173: my $crs='/'.$ENV{'request.course.id'}; 174: if ($ENV{'request.course.sec'}) { 175: $crs.='_'.$ENV{'request.course.sec'}; 176: } 177: $crs=~s/\_/\//g; 178: my $seeid=&Apache::lonnet::allowed('rin',$crs); 179: unless ($symb) { 180: $symb=&Apache::lonnet::symbread(); 181: } 182: if ($symb) { 183: my %contrib=&Apache::lonnet::restore($symb,$ENV{'request.course.id'}, 184: $ENV{'course.'.$ENV{'request.course.id'}.'.domain'}, 185: $ENV{'course.'.$ENV{'request.course.id'}.'.num'}); 186: if ($contrib{'version'}) { 187: unless ($discussiononly) { 188: $discussion.= 189: '<address><hr />'; 190: } 191: my $idx; 192: for ($idx=1;$idx<=$contrib{'version'};$idx++) { 193: my $hidden=($contrib{'hidden'}=~/\.$idx\./); 194: my $deleted=($contrib{'deleted'}=~/\.$idx\./); 195: unless ((($hidden) && (!$seeid)) || ($deleted)) { 196: my $message=$contrib{$idx.':message'}; 197: $message=~s/\n/\<br \/\>/g; 198: $message=&Apache::lontexconvert::msgtexconverted($message); 199: if ($contrib{$idx.':attachmenturl'}) { 200: my ($fname,$ft) 201: =($contrib{$idx.':attachmenturl'}=~/\/(\w+)\.(\w+)$/); 202: $message.='<p>Attachment: <a href="'. 203: &Apache::lonnet::tokenwrapper($contrib{$idx.':attachmenturl'}). 204: '"><tt>'.$fname.'.'.$ft.'</tt></a>'; 205: } 206: if ($message) { 207: if ($hidden) { 208: $message='<font color="#888888">'.$message.'</font>'; 209: } 210: my $screenname=&Apache::loncommon::screenname( 211: $contrib{$idx.':sendername'}, 212: $contrib{$idx.':senderdomain'}); 213: my $plainname=&Apache::loncommon::nickname( 214: $contrib{$idx.':sendername'}, 215: $contrib{$idx.':senderdomain'}); 216: 217: my $sender='Anonymous'; 218: if ((!$contrib{$idx.':anonymous'}) || ($seeid)) { 219: $sender=&Apache::loncommon::aboutmewrapper( 220: $plainname, 221: $contrib{$idx.':sendername'}, 222: $contrib{$idx.':senderdomain'}).' ('. 223: $contrib{$idx.':sendername'}.' at '. 224: $contrib{$idx.':senderdomain'}.')'; 225: if ($contrib{$idx.':anonymous'}) { 226: $sender.=' [anonymous] '. 227: $screenname; 228: } 229: if ($seeid) { 230: if ($hidden) { 231: $sender.=' <a href="/adm/feedback?unhide='. 232: $symb.':::'.$idx.'">Make Visible</a>'; 233: } else { 234: $sender.=' <a href="/adm/feedback?hide='. 235: $symb.':::'.$idx.'">Hide</a>'; 236: } 237: $sender.=' <a href="/adm/feedback?deldisc='. 238: $symb.':::'.$idx.'">Delete</a>'; 239: } 240: } else { 241: if ($screenname) { 242: $sender='<i>'.$screenname.'</i>'; 243: } 244: } 245: $discussion.='<p><b>'.$sender.'</b> ('. 246: localtime($contrib{$idx.':timestamp'}). 247: '):<blockquote>'.$message. 248: '</blockquote></p>'; 249: } 250: } 251: } 252: unless ($discussiononly) { 253: $discussion.='</address>'; 254: } 255: } 256: if ($discussiononly) { 257: $discussion.=(<<ENDDISCUSS); 258: <form action="/adm/feedback" method="post" name="mailform" enctype="multipart/form-data"> 259: <input type="submit" name="discuss" value="Post Discussion" /> 260: <input type="submit" name="anondiscuss" value="Post Anonymous Discussion" /> 261: <input type="hidden" name="symb" value="$symb" /> 262: <input type="hidden" name="sendit" value="true" /> 263: <br /> 264: <font size="1">Note: in anonymous discussion, your name is visible only to 265: course faculty</font><br /> 266: <textarea name=comment cols=60 rows=10 wrap=hard></textarea> 267: <p> 268: Attachment (128 KB max size): <input type="file" name="attachment" /> 269: </p> 270: </form> 271: ENDDISCUSS 272: $discussion.=&Apache::lonfeedback::generate_preview_button(); 273: } 274: } 275: } 276: return $discussion.($discussiononly?'':'</html>'); 277: } 278: 279: sub tokeninputfield { 280: my $defhost=$Apache::lonnet::perlvar{'lonHostID'}; 281: $defhost=~tr/a-z/A-Z/; 282: return (<<ENDINPUTFIELD) 283: <script type="text/javascript"> 284: function updatetoken() { 285: var comp=new Array; 286: var barcode=unescape(document.tokeninput.barcode.value); 287: comp=barcode.split('*'); 288: if (typeof(comp[0])!="undefined") { 289: document.tokeninput.codeone.value=comp[0]; 290: } 291: if (typeof(comp[1])!="undefined") { 292: document.tokeninput.codetwo.value=comp[1]; 293: } 294: if (typeof(comp[2])!="undefined") { 295: comp[2]=comp[2].toUpperCase(); 296: document.tokeninput.codethree.value=comp[2]; 297: } 298: document.tokeninput.barcode.value=''; 299: } 300: </script> 301: <form method="post" name="tokeninput"> 302: <table border="2" bgcolor="#FFFFBB"> 303: <tr><th>DocID Checkin</th></tr> 304: <tr><td> 305: <table> 306: <tr> 307: <td>Scan in Barcode</td> 308: <td><input type="text" size="22" name="barcode" 309: onChange="updatetoken()"/></td> 310: </tr> 311: <tr><td><i>or</i> Type in DocID</td> 312: <td> 313: <input type="text" size="5" name="codeone" /> 314: <b><font size="+2">*</font></b> 315: <input type="text" size="5" name="codetwo" /> 316: <b><font size="+2">*</font></b> 317: <input type="text" size="10" name="codethree" value="$defhost" 318: onChange="this.value=this.value.toUpperCase()" /> 319: </td></tr> 320: </table> 321: </td></tr> 322: <tr><td><input type="submit" value="Check in DocID" /></td></tr> 323: </table> 324: </form> 325: ENDINPUTFIELD 326: } 327: 328: sub maketoken { 329: my ($symb,$tuname,$tudom,$tcrsid)=@_; 330: unless ($symb) { 331: $symb=&Apache::lonnet::symbread(); 332: } 333: unless ($tuname) { 334: $tuname=$ENV{'user.name'}; 335: $tudom=$ENV{'user.domain'}; 336: $tcrsid=$ENV{'request.course.id'}; 337: } 338: 339: return &Apache::lonnet::checkout($symb,$tuname,$tudom,$tcrsid); 340: } 341: 342: sub printtokenheader { 343: my ($target,$token,$tsymb,$tcrsid,$tudom,$tuname)=@_; 344: unless ($token) { return ''; } 345: 346: my ($symb,$courseid,$domain,$name) = &Apache::lonxml::whichuser(); 347: unless ($tsymb) { 348: $tsymb=$symb; 349: } 350: unless ($tuname) { 351: $tuname=$name; 352: $tudom=$domain; 353: $tcrsid=$courseid; 354: } 355: 356: my %reply=&Apache::lonnet::get('environment', 357: ['firstname','middlename','lastname','generation'], 358: $tudom,$tuname); 359: my $plainname=$reply{'firstname'}.' '. 360: $reply{'middlename'}.' '. 361: $reply{'lastname'}.' '. 362: $reply{'generation'}; 363: 364: if ($target eq 'web') { 365: my %idhash=&Apache::lonnet::idrget($tudom,($tuname)); 366: return 367: '<img align="right" src="/cgi-bin/barcode.png?encode='.$token.'" />'. 368: 'Checked out for '.$plainname. 369: '<br />User: '.$tuname.' at '.$tudom. 370: '<br />ID: '.$idhash{$tuname}. 371: '<br />CourseID: '.$tcrsid. 372: '<br />Course: '.$ENV{'course.'.$tcrsid.'.description'}. 373: '<br />DocID: '.$token. 374: '<br />Time: '.localtime().'<hr />'; 375: } else { 376: return $token; 377: } 378: } 379: 380: sub fontsettings() { 381: my $headerstring=''; 382: if (($ENV{'browser.os'} eq 'mac') && (!$ENV{'browser.mathml'})) { 383: $headerstring.= 384: '<meta Content-Type="text/html; charset=x-mac-roman">'; 385: } elsif (!$ENV{'browser.mathml'}) { 386: $headerstring.= 387: '<meta http-equiv="Content-Type" content="text/html; charset=utf-8" />'; 388: } 389: return $headerstring; 390: } 391: 392: sub printalltags { 393: my $temp; 394: foreach $temp (sort keys %Apache::lonxml::alltags) { 395: &Apache::lonxml::debug("$temp -- ". 396: join(',',@{ $Apache::lonxml::alltags{$temp} })); 397: } 398: } 399: 400: sub xmlparse { 401: my ($request,$target,$content_file_string,$safeinit,%style_for_target) = @_; 402: 403: &setup_globals($request,$target); 404: &Apache::inputtags::initialize_inputtags(); 405: &Apache::outputtags::initialize_outputtags(); 406: &Apache::edit::initialize_edit(); 407: 408: # 409: # do we have a course style file? 410: # 411: 412: if ($ENV{'request.course.id'} && $ENV{'request.state'} ne 'construct') { 413: my $bodytext= 414: $ENV{'course.'.$ENV{'request.course.id'}.'.default_xml_style'}; 415: if ($bodytext) { 416: my $location=&Apache::lonnet::filelocation('',$bodytext); 417: my $styletext=&Apache::lonnet::getfile($location); 418: if ($styletext ne '-1') { 419: %style_for_target = (%style_for_target, 420: &Apache::style::styleparser($target,$styletext)); 421: } 422: } 423: } 424: 425: #&printalltags(); 426: my @pars = (); 427: my $pwd=$ENV{'request.filename'}; 428: $pwd =~ s:/[^/]*$::; 429: &newparser(\@pars,\$content_file_string,$pwd); 430: 431: my $safeeval = new Safe; 432: my $safehole = new Safe::Hole; 433: &init_safespace($target,$safeeval,$safehole,$safeinit); 434: #-------------------- Redefinition of the target in the case of compound target 435: 436: ($target, my @tenta) = split('&&',$target); 437: 438: my @stack = (); 439: my @parstack = (); 440: &initdepth; 441: 442: my $finaloutput = &inner_xmlparse($target,\@stack,\@parstack,\@pars, 443: $safeeval,\%style_for_target); 444: if ($ENV{'request.uri'}) { 445: &writeallows($ENV{'request.uri'}); 446: } 447: if ($Apache::lonxml::counter_changed) { &store_counter() } 448: return $finaloutput; 449: } 450: 451: sub htmlclean { 452: my ($raw,$full)=@_; 453: 454: my $tree = HTML::TreeBuilder->new; 455: $tree->ignore_unknown(0); 456: 457: $tree->parse($raw); 458: 459: my $output= $tree->as_HTML(undef,' '); 460: 461: $output=~s/\<(br|hr|img|meta|allow)(.*?)\>/\<$1$2 \/\>/gis; 462: $output=~s/\<\/(br|hr|img|meta|allow)\>//gis; 463: unless ($full) { 464: $output=~s/\<[\/]*(body|head|html)\>//gis; 465: } 466: 467: $tree = $tree->delete; 468: 469: return $output; 470: } 471: 472: sub latex_special_symbols { 473: my ($current_token,$stack,$parstack,$where)=@_; 474: if ($where eq 'header') { 475: $current_token =~ s/(\\|_|\^)/ /g; 476: $current_token =~ s/(\$|%|\#|&|\{|\})/\\$1/g; 477: } else { 478: $current_token=~s/\\ /\\char92 /g; 479: $current_token=~s/\^/\\char94 /g; 480: $current_token=~s/\~/\\char126 /g; 481: $current_token=~s/(&[^A-Za-z\#])/\\$1/g; 482: $current_token=~s/([^&])\#/$1\\#/g; 483: $current_token=~s/(\$|_|{|})/\\$1/g; 484: $current_token=~s/\\char92 /\\texttt{\\char92}/g; 485: $current_token=~s/(>|<)/\$$1\$/g; #more or less 486: if ($current_token=~m/\d%/) {$current_token =~ s/(\d)%/$1\\%/g;} #percent after digit 487: if ($current_token=~m/\s%/) {$current_token =~ s/(\s)%/$1\\%/g;} #persent after space 488: } 489: return $current_token; 490: } 491: 492: sub inner_xmlparse { 493: my ($target,$stack,$parstack,$pars,$safeeval,$style_for_target)=@_; 494: my $finaloutput = ''; 495: my $result; 496: my $token; 497: while ( $#$pars > -1 ) { 498: while ($token = $$pars['-1']->get_token) { 499: if (($token->[0] eq 'T') || ($token->[0] eq 'C') || ($token->[0] eq 'D') ) { 500: if ($metamode<1) { 501: my $text=$token->[1]; 502: if ($token->[0] eq 'C' && $target eq 'tex') { 503: $text = ''; 504: # $text = '%'.$text."\n"; 505: } 506: $result.=$text; 507: } 508: } elsif ($token->[0] eq 'PI') { 509: if ($metamode<1) { 510: $result=$token->[2]; 511: } 512: } elsif ($token->[0] eq 'S') { 513: # add tag to stack 514: push (@$stack,$token->[1]); 515: # add parameters list to another stack 516: push (@$parstack,&parstring($token)); 517: &increasedepth($token); 518: if ($Apache::lonxml::usestyle && 519: exists($$style_for_target{$token->[1]})) { 520: $Apache::lonxml::usestyle=0; 521: my $string=$$style_for_target{$token->[1]}. 522: '<LONCAPA_INTERNAL_TURN_STYLE_ON />'; 523: &Apache::lonxml::newparser($pars,\$string); 524: } else { 525: $result = &callsub("start_$token->[1]", $target, $token, $stack, 526: $parstack, $pars, $safeeval, $style_for_target); 527: } 528: } elsif ($token->[0] eq 'E') { 529: #clear out any tags that didn't end 530: while ($token->[1] ne $$stack['-1'] && ($#$stack > -1)) { 531: my $lasttag=$$stack[-1]; 532: if ($token->[1] =~ /^$lasttag$/i) { 533: &Apache::lonxml::warning('Using tag </'.$token->[1].'> on line '.$token->[3].' as end tag to <'.$$stack[-1].'>'); 534: last; 535: } else { 536: &Apache::lonxml::warning('Found tag </'.$token->[1].'> on line '.$token->[3].' when looking for </'.$$stack[-1].'> in file'); 537: &end_tag($stack,$parstack,$token); 538: } 539: } 540: 541: if ($Apache::lonxml::usestyle && 542: exists($$style_for_target{'/'."$token->[1]"})) { 543: $Apache::lonxml::usestyle=0; 544: my $string=$$style_for_target{'/'.$token->[1]}. 545: '<LONCAPA_INTERNAL_TURN_STYLE_ON />'; 546: &Apache::lonxml::newparser($pars,\$string); 547: } else { 548: $result = &callsub("end_$token->[1]", $target, $token, $stack, 549: $parstack, $pars,$safeeval, $style_for_target); 550: } 551: } else { 552: &Apache::lonxml::error("Unknown token event :$token->[0]:$token->[1]:"); 553: } 554: #evaluate variable refs in result 555: if ($result ne "") { 556: if ( $#$parstack > -1 ) { 557: $result=&Apache::run::evaluate($result,$safeeval,$$parstack[-1]); 558: } else { 559: $result= &Apache::run::evaluate($result,$safeeval,''); 560: } 561: } 562: if (($token->[0] eq 'T') || ($token->[0] eq 'C') || ($token->[0] eq 'D') ) { 563: #Style file definitions should be correct 564: if ($target eq 'tex' && ($Apache::lonxml::usestyle)) { 565: $result=&latex_special_symbols($result,$stack,$parstack); 566: } 567: } 568: 569: # Encode any high ASCII characters 570: if (!$Apache::lonxml::prevent_entity_encode) { 571: $result=&HTML::Entities::encode($result,"\200-\377"); 572: } 573: if ($Apache::lonxml::redirection) { 574: $Apache::lonxml::outputstack['-1'] .= $result; 575: } else { 576: $finaloutput.=$result; 577: } 578: $result = ''; 579: 580: if ($token->[0] eq 'E') { 581: &end_tag($stack,$parstack,$token); 582: } 583: } 584: if ($#$pars > -1) { 585: pop @$pars; 586: pop @Apache::lonxml::pwd; 587: } 588: } 589: 590: # if ($target eq 'meta') { 591: # $finaloutput.=&endredirection; 592: # } 593: 594: 595: if (($ENV{'QUERY_STRING'}) && ($target eq 'web')) { 596: $finaloutput=&afterburn($finaloutput); 597: } 598: return $finaloutput; 599: } 600: 601: sub callsub { 602: my ($sub,$target,$token,$tagstack,$parstack,$parser,$safeeval,$style)=@_; 603: my $currentstring=''; 604: my $nodefault; 605: { 606: my $sub1; 607: no strict 'refs'; 608: my $tag=$token->[1]; 609: # get utterly rid of extended html tags 610: if ($tag=~/^x\-/i) { return ''; } 611: my $space=$Apache::lonxml::alltags{$tag}[-1]; 612: if (!$space) { 613: $tag=~tr/A-Z/a-z/; 614: $sub=~tr/A-Z/a-z/; 615: $space=$Apache::lonxml::alltags{$tag}[-1] 616: } 617: 618: my $deleted=0; 619: $Apache::lonxml::curdepth=join('_',@Apache::lonxml::depthcounter); 620: if (($token->[0] eq 'S') && ($target eq 'modified')) { 621: $deleted=&Apache::edit::handle_delete($space,$target,$token,$tagstack, 622: $parstack,$parser,$safeeval, 623: $style); 624: } 625: if (!$deleted) { 626: if ($space) { 627: #&Apache::lonxml::debug("Calling sub $sub in $space $metamode"); 628: $sub1="$space\:\:$sub"; 629: ($currentstring,$nodefault) = &$sub1($target,$token,$tagstack, 630: $parstack,$parser,$safeeval, 631: $style); 632: } else { 633: #&Apache::lonxml::debug("NOT Calling sub $sub in $space $metamode"); 634: if ($metamode <1) { 635: if (defined($token->[4]) && ($metamode < 1)) { 636: $currentstring = $token->[4]; 637: } else { 638: $currentstring = $token->[2]; 639: } 640: } 641: } 642: # &Apache::lonxml::debug("nodefalt:$nodefault:"); 643: if ($currentstring eq '' && $nodefault eq '') { 644: if ($target eq 'edit') { 645: #&Apache::lonxml::debug("doing default edit for $token->[1]"); 646: if ($token->[0] eq 'S') { 647: $currentstring = &Apache::edit::tag_start($target,$token); 648: } elsif ($token->[0] eq 'E') { 649: $currentstring = &Apache::edit::tag_end($target,$token); 650: } 651: } elsif ($target eq 'modified') { 652: if ($token->[0] eq 'S') { 653: $currentstring = $token->[4]; 654: $currentstring.=&Apache::edit::handle_insert(); 655: } elsif ($token->[0] eq 'E') { 656: $currentstring = $token->[2]; 657: $currentstring.=&Apache::edit::handle_insertafter($token->[1]); 658: } else { 659: $currentstring = $token->[2]; 660: } 661: } 662: } 663: } 664: use strict 'refs'; 665: } 666: return $currentstring; 667: } 668: 669: sub setup_globals { 670: my ($request,$target)=@_; 671: $Apache::lonxml::request=$request; 672: $Apache::lonxml::registered = 0; 673: $errorcount=0; 674: $warningcount=0; 675: $Apache::lonxml::default_homework_loaded=0; 676: $Apache::lonxml::usestyle=1; 677: &init_counter(); 678: @Apache::lonxml::pwd=(); 679: @Apache::lonxml::extlinks=(); 680: if ($target eq 'meta') { 681: $Apache::lonxml::redirection = 0; 682: $Apache::lonxml::metamode = 1; 683: $Apache::lonxml::evaluate = 1; 684: $Apache::lonxml::import = 0; 685: } elsif ($target eq 'answer') { 686: $Apache::lonxml::redirection = 0; 687: $Apache::lonxml::metamode = 1; 688: $Apache::lonxml::evaluate = 1; 689: $Apache::lonxml::import = 1; 690: } elsif ($target eq 'grade') { 691: &startredirection; 692: $Apache::lonxml::metamode = 0; 693: $Apache::lonxml::evaluate = 1; 694: $Apache::lonxml::import = 1; 695: } elsif ($target eq 'modified') { 696: $Apache::lonxml::redirection = 0; 697: $Apache::lonxml::metamode = 0; 698: $Apache::lonxml::evaluate = 0; 699: $Apache::lonxml::import = 0; 700: } elsif ($target eq 'edit') { 701: $Apache::lonxml::redirection = 0; 702: $Apache::lonxml::metamode = 0; 703: $Apache::lonxml::evaluate = 0; 704: $Apache::lonxml::import = 0; 705: } elsif ($target eq 'analyze') { 706: $Apache::lonxml::redirection = 0; 707: $Apache::lonxml::metamode = 0; 708: $Apache::lonxml::evaluate = 1; 709: $Apache::lonxml::import = 1; 710: } else { 711: $Apache::lonxml::redirection = 0; 712: $Apache::lonxml::metamode = 0; 713: $Apache::lonxml::evaluate = 1; 714: $Apache::lonxml::import = 1; 715: } 716: } 717: 718: sub init_safespace { 719: my ($target,$safeeval,$safehole,$safeinit) = @_; 720: $safeeval->permit("entereval"); 721: $safeeval->permit(":base_math"); 722: $safeeval->permit("sort"); 723: $safeeval->deny(":base_io"); 724: $safehole->wrap(\&Apache::scripttag::xmlparse,$safeeval,'&xmlparse'); 725: $safehole->wrap(\&Apache::outputtags::multipart,$safeeval,'&multipart'); 726: $safehole->wrap(\&Apache::lonnet::EXT,$safeeval,'&EXT'); 727: 728: $safehole->wrap(\&Math::Cephes::asin,$safeeval,'&asin'); 729: $safehole->wrap(\&Math::Cephes::acos,$safeeval,'&acos'); 730: $safehole->wrap(\&Math::Cephes::atan,$safeeval,'&atan'); 731: $safehole->wrap(\&Math::Cephes::sinh,$safeeval,'&sinh'); 732: $safehole->wrap(\&Math::Cephes::cosh,$safeeval,'&cosh'); 733: $safehole->wrap(\&Math::Cephes::tanh,$safeeval,'&tanh'); 734: $safehole->wrap(\&Math::Cephes::asinh,$safeeval,'&asinh'); 735: $safehole->wrap(\&Math::Cephes::acosh,$safeeval,'&acosh'); 736: $safehole->wrap(\&Math::Cephes::atanh,$safeeval,'&atanh'); 737: $safehole->wrap(\&Math::Cephes::erf,$safeeval,'&erf'); 738: $safehole->wrap(\&Math::Cephes::erfc,$safeeval,'&erfc'); 739: $safehole->wrap(\&Math::Cephes::j0,$safeeval,'&j0'); 740: $safehole->wrap(\&Math::Cephes::j1,$safeeval,'&j1'); 741: $safehole->wrap(\&Math::Cephes::jn,$safeeval,'&jn'); 742: $safehole->wrap(\&Math::Cephes::jv,$safeeval,'&jv'); 743: $safehole->wrap(\&Math::Cephes::y0,$safeeval,'&y0'); 744: $safehole->wrap(\&Math::Cephes::y1,$safeeval,'&y1'); 745: $safehole->wrap(\&Math::Cephes::yn,$safeeval,'&yn'); 746: $safehole->wrap(\&Math::Cephes::yv,$safeeval,'&yv'); 747: 748: $safehole->wrap(\&Math::Cephes::bdtr ,$safeeval,'&bdtr' ); 749: $safehole->wrap(\&Math::Cephes::bdtrc ,$safeeval,'&bdtrc' ); 750: $safehole->wrap(\&Math::Cephes::bdtri ,$safeeval,'&bdtri' ); 751: $safehole->wrap(\&Math::Cephes::btdtr ,$safeeval,'&btdtr' ); 752: $safehole->wrap(\&Math::Cephes::chdtr ,$safeeval,'&chdtr' ); 753: $safehole->wrap(\&Math::Cephes::chdtrc,$safeeval,'&chdtrc'); 754: $safehole->wrap(\&Math::Cephes::chdtri,$safeeval,'&chdtri'); 755: $safehole->wrap(\&Math::Cephes::fdtr ,$safeeval,'&fdtr' ); 756: $safehole->wrap(\&Math::Cephes::fdtrc ,$safeeval,'&fdtrc' ); 757: $safehole->wrap(\&Math::Cephes::fdtri ,$safeeval,'&fdtri' ); 758: $safehole->wrap(\&Math::Cephes::gdtr ,$safeeval,'&gdtr' ); 759: $safehole->wrap(\&Math::Cephes::gdtrc ,$safeeval,'&gdtrc' ); 760: $safehole->wrap(\&Math::Cephes::nbdtr ,$safeeval,'&nbdtr' ); 761: $safehole->wrap(\&Math::Cephes::nbdtrc,$safeeval,'&nbdtrc'); 762: $safehole->wrap(\&Math::Cephes::nbdtri,$safeeval,'&nbdtri'); 763: $safehole->wrap(\&Math::Cephes::ndtr ,$safeeval,'&ndtr' ); 764: $safehole->wrap(\&Math::Cephes::ndtri ,$safeeval,'&ndtri' ); 765: $safehole->wrap(\&Math::Cephes::pdtr ,$safeeval,'&pdtr' ); 766: $safehole->wrap(\&Math::Cephes::pdtrc ,$safeeval,'&pdtrc' ); 767: $safehole->wrap(\&Math::Cephes::pdtri ,$safeeval,'&pdtri' ); 768: $safehole->wrap(\&Math::Cephes::stdtr ,$safeeval,'&stdtr' ); 769: $safehole->wrap(\&Math::Cephes::stdtri,$safeeval,'&stdtri'); 770: 771: # $safehole->wrap(\&Math::Cephes::new_fract,$safeeval,'&new_fract'); 772: # $safehole->wrap(\&Math::Cephes::radd,$safeeval,'&radd'); 773: # $safehole->wrap(\&Math::Cephes::rsub,$safeeval,'&rsub'); 774: # $safehole->wrap(\&Math::Cephes::rmul,$safeeval,'&rmul'); 775: # $safehole->wrap(\&Math::Cephes::rdiv,$safeeval,'&rdiv'); 776: # $safehole->wrap(\&Math::Cephes::euclid,$safeeval,'&euclid'); 777: 778: $safehole->wrap(\&Math::Random::random_beta,$safeeval,'&math_random_beta'); 779: $safehole->wrap(\&Math::Random::random_chi_square,$safeeval,'&math_random_chi_square'); 780: $safehole->wrap(\&Math::Random::random_exponential,$safeeval,'&math_random_exponential'); 781: $safehole->wrap(\&Math::Random::random_f,$safeeval,'&math_random_f'); 782: $safehole->wrap(\&Math::Random::random_gamma,$safeeval,'&math_random_gamma'); 783: $safehole->wrap(\&Math::Random::random_multivariate_normal,$safeeval,'&math_random_multivariate_normal'); 784: $safehole->wrap(\&Math::Random::random_multinomial,$safeeval,'&math_random_multinomial'); 785: $safehole->wrap(\&Math::Random::random_noncentral_chi_square,$safeeval,'&math_random_noncentral_chi_square'); 786: $safehole->wrap(\&Math::Random::random_noncentral_f,$safeeval,'&math_random_noncentral_f'); 787: $safehole->wrap(\&Math::Random::random_normal,$safeeval,'&math_random_normal'); 788: $safehole->wrap(\&Math::Random::random_permutation,$safeeval,'&math_random_permutation'); 789: $safehole->wrap(\&Math::Random::random_permuted_index,$safeeval,'&math_random_permuted_index'); 790: $safehole->wrap(\&Math::Random::random_uniform,$safeeval,'&math_random_uniform'); 791: $safehole->wrap(\&Math::Random::random_poisson,$safeeval,'&math_random_poisson'); 792: $safehole->wrap(\&Math::Random::random_uniform_integer,$safeeval,'&math_random_uniform_integer'); 793: $safehole->wrap(\&Math::Random::random_negative_binomial,$safeeval,'&math_random_negative_binomial'); 794: $safehole->wrap(\&Math::Random::random_binomial,$safeeval,'&math_random_binomial'); 795: $safehole->wrap(\&Math::Random::random_seed_from_phrase,$safeeval,'&random_seed_from_phrase'); 796: $safehole->wrap(\&Math::Random::random_set_seed_from_phrase,$safeeval,'&random_set_seed_from_phrase'); 797: $safehole->wrap(\&Math::Random::random_get_seed,$safeeval,'&random_get_seed'); 798: $safehole->wrap(\&Math::Random::random_set_seed,$safeeval,'&random_set_seed'); 799: 800: #need to inspect this class of ops 801: # $safeeval->deny(":base_orig"); 802: $safeinit .= ';$external::target="'.$target.'";'; 803: my $rndseed; 804: my ($symb,$courseid,$domain,$name) = &Apache::lonxml::whichuser(); 805: $rndseed=&Apache::lonnet::rndseed($symb,$courseid,$domain,$name); 806: $safeinit .= ';$external::randomseed='.$rndseed.';'; 807: &Apache::lonxml::debug("Setting rndseed to $rndseed"); 808: &Apache::run::run($safeinit,$safeeval); 809: } 810: 811: sub default_homework_load { 812: my ($safeeval)=@_; 813: &Apache::lonxml::debug('Loading default_homework'); 814: my $default=&Apache::lonnet::getfile('/home/httpd/html/res/adm/includes/default_homework.lcpm'); 815: if ($default eq -1) { 816: &Apache::lonxml::error("<b>Unable to find <i>default_homework.lcpm</i></b>"); 817: } else { 818: &Apache::run::run($default,$safeeval); 819: $Apache::lonxml::default_homework_loaded=1; 820: } 821: } 822: 823: sub startredirection { 824: $Apache::lonxml::redirection++; 825: push (@Apache::lonxml::outputstack, ''); 826: } 827: 828: sub endredirection { 829: if (!$Apache::lonxml::redirection) { 830: &Apache::lonxml::error("Endredirection was called, before a startredirection, perhaps you have unbalanced tags. Some debuging information:".join ":",caller); 831: return ''; 832: } 833: $Apache::lonxml::redirection--; 834: pop @Apache::lonxml::outputstack; 835: } 836: 837: sub end_tag { 838: my ($tagstack,$parstack,$token)=@_; 839: pop(@$tagstack); 840: pop(@$parstack); 841: &decreasedepth($token); 842: } 843: 844: sub initdepth { 845: @Apache::lonxml::depthcounter=(); 846: $Apache::lonxml::depth=-1; 847: $Apache::lonxml::olddepth=-1; 848: } 849: 850: sub increasedepth { 851: my ($token) = @_; 852: $Apache::lonxml::depth++; 853: $Apache::lonxml::depthcounter[$Apache::lonxml::depth]++; 854: if ($Apache::lonxml::depthcounter[$Apache::lonxml::depth]==1) { 855: $Apache::lonxml::olddepth=$Apache::lonxml::depth; 856: } 857: my $curdepth=join('_',@Apache::lonxml::depthcounter); 858: &Apache::lonxml::debug("s $Apache::lonxml::depth : $Apache::lonxml::olddepth : $curdepth : $token->[1]\n"); 859: #print "<br />s $Apache::lonxml::depth : $Apache::lonxml::olddepth : $curdepth : $token->[1]\n"; 860: } 861: 862: sub decreasedepth { 863: my ($token) = @_; 864: $Apache::lonxml::depth--; 865: if ($Apache::lonxml::depth<$Apache::lonxml::olddepth-1) { 866: $#Apache::lonxml::depthcounter--; 867: $Apache::lonxml::olddepth=$Apache::lonxml::depth+1; 868: } 869: if ( $Apache::lonxml::depth < -1) { 870: &Apache::lonxml::warning("Missing tags, unable to properly run file."); 871: $Apache::lonxml::depth='-1'; 872: } 873: my $curdepth=join('_',@Apache::lonxml::depthcounter); 874: &Apache::lonxml::debug("e $Apache::lonxml::depth : $Apache::lonxml::olddepth : $token->[1] : $curdepth\n"); 875: #print "<br />e $Apache::lonxml::depth : $Apache::lonxml::olddepth : $token->[1] : $curdepth\n"; 876: } 877: 878: sub get_all_text_unbalanced { 879: #there is a copy of this in lonpublisher.pm 880: my($tag,$pars)= @_; 881: my $token; 882: my $result=''; 883: $tag='<'.$tag.'>'; 884: while ($token = $$pars[-1]->get_token) { 885: if (($token->[0] eq 'T')||($token->[0] eq 'C')||($token->[0] eq 'D')) { 886: $result.=$token->[1]; 887: } elsif ($token->[0] eq 'PI') { 888: $result.=$token->[2]; 889: } elsif ($token->[0] eq 'S') { 890: $result.=$token->[4]; 891: } elsif ($token->[0] eq 'E') { 892: $result.=$token->[2]; 893: } 894: if ($result =~ /(.*)\Q$tag\E(.*)/s) { 895: &Apache::lonxml::debug('Got a winner with leftovers ::'.$2); 896: &Apache::lonxml::debug('Result is :'.$1); 897: $result=$1; 898: my $redo=$tag.$2; 899: &Apache::lonxml::newparser($pars,\$redo); 900: last; 901: } 902: } 903: return $result 904: } 905: 906: sub increment_counter { 907: my ($increment) = @_; 908: if (defined($increment) && $increment gt 0) { 909: $Apache::lonxml::counter+=$increment; 910: } else { 911: $Apache::lonxml::counter++; 912: } 913: $Apache::lonxml::counter_changed=1; 914: } 915: 916: sub init_counter { 917: if (defined($ENV{'form.counter'})) { 918: $Apache::lonxml::counter=$ENV{'form.counter'}; 919: $Apache::lonxml::counter_changed=0; 920: } else { 921: $Apache::lonxml::counter=1; 922: $Apache::lonxml::counter_changed=1; 923: } 924: } 925: 926: sub store_counter { 927: &Apache::lonnet::appenv(('form.counter' => $Apache::lonxml::counter)); 928: return ''; 929: } 930: 931: sub get_all_text { 932: my($tag,$pars)= @_; 933: &Apache::lonxml::debug("Got a ".ref($pars)); 934: my $gotfullstack=1; 935: if (ref($pars) ne 'ARRAY') { 936: $gotfullstack=0; 937: $pars=[$pars]; 938: } 939: my $depth=0; 940: my $token; 941: my $result=''; 942: if ( $tag =~ m:^/: ) { 943: my $tag=substr($tag,1); 944: #&Apache::lonxml::debug("have:$tag:"); 945: my $top_empty=0; 946: while (($depth >=0) && ($#$pars > -1) && (!$top_empty)) { 947: while (($depth >=0) && ($token = $$pars[-1]->get_token)) { 948: #&Apache::lonxml::debug("e token:$token->[0]:$depth:$token->[1]:".$#$pars.":".$#Apache::lonxml::pwd); 949: if (($token->[0] eq 'T')||($token->[0] eq 'C')||($token->[0] eq 'D')) { 950: $result.=$token->[1]; 951: } elsif ($token->[0] eq 'PI') { 952: $result.=$token->[2]; 953: } elsif ($token->[0] eq 'S') { 954: if ($token->[1] =~ /^$tag$/i) { $depth++; } 955: $result.=$token->[4]; 956: } elsif ($token->[0] eq 'E') { 957: if ( $token->[1] =~ /^$tag$/i) { $depth--; } 958: #skip sending back the last end tag 959: if ($depth > -1) { $result.=$token->[2]; } else { 960: $$pars[-1]->unget_token($token); 961: } 962: } 963: } 964: if (($depth >=0) && ($#$pars == 0) ) { $top_empty=1; } 965: if (($depth >=0) && ($#$pars > 0) ) { 966: pop(@$pars); 967: pop(@Apache::lonxml::pwd); 968: } 969: } 970: if ($top_empty && $depth >= 0) { 971: #never found the end tag ran out of text, throw error send back blank 972: &error('Never found end tag for <'.$tag.'>'); 973: if ($gotfullstack) { 974: my $newstring='</'.$tag.'>'.$result; 975: &Apache::lonxml::newparser($pars,\$newstring); 976: } 977: $result=''; 978: } 979: } else { 980: while ($#$pars > -1) { 981: while ($token = $$pars[-1]->get_token) { 982: #&Apache::lonxml::debug("s token:$token->[0]:$depth:$token->[1]"); 983: if (($token->[0] eq 'T')||($token->[0] eq 'C')|| 984: ($token->[0] eq 'D')) { 985: $result.=$token->[1]; 986: } elsif ($token->[0] eq 'PI') { 987: $result.=$token->[2]; 988: } elsif ($token->[0] eq 'S') { 989: if ( $token->[1] =~ /^$tag$/i) { 990: $$pars[-1]->unget_token($token); last; 991: } else { 992: $result.=$token->[4]; 993: } 994: } elsif ($token->[0] eq 'E') { 995: $result.=$token->[2]; 996: } 997: } 998: if (($#$pars > 0) ) { 999: pop(@$pars); 1000: pop(@Apache::lonxml::pwd); 1001: } else { last; } 1002: } 1003: } 1004: if ($result =~ m|<LONCAPA_INTERNAL_TURN_STYLE_ON />|) { 1005: $Apache::lonxml::usestyle=1; 1006: } 1007: #&Apache::lonxml::debug("Exit:$result:"); 1008: return $result 1009: } 1010: 1011: sub newparser { 1012: my ($parser,$contentref,$dir) = @_; 1013: push (@$parser,HTML::LCParser->new($contentref)); 1014: $$parser['-1']->xml_mode('1'); 1015: if ( $dir eq '' ) { 1016: push (@Apache::lonxml::pwd, $Apache::lonxml::pwd[$#Apache::lonxml::pwd]); 1017: } else { 1018: push (@Apache::lonxml::pwd, $dir); 1019: } 1020: # &Apache::lonxml::debug("pwd:$#Apache::lonxml::pwd"); 1021: # &Apache::lonxml::debug("pwd:$Apache::lonxml::pwd[$#Apache::lonxml::pwd]"); 1022: } 1023: 1024: sub parstring { 1025: my ($token) = @_; 1026: my $temp=''; 1027: foreach (@{$token->[3]}) { 1028: unless ($_=~/\W/) { 1029: my $val=$token->[2]->{$_}; 1030: $val =~ s/([\%\@\\\"\'])/\\$1/g; 1031: #if ($val =~ m/^[\%\@]/) { $val="\\".$val; } 1032: $temp .= "my \$$_=\"$val\";" 1033: } 1034: } 1035: return $temp; 1036: } 1037: 1038: sub writeallows { 1039: unless ($#extlinks>=0) { return; } 1040: my $thisurl='/res/'.&Apache::lonnet::declutter(shift); 1041: if ($ENV{'httpref.'.$thisurl}) { 1042: $thisurl=$ENV{'httpref.'.$thisurl}; 1043: } 1044: my $thisdir=$thisurl; 1045: $thisdir=~s/\/[^\/]+$//; 1046: my %httpref=(); 1047: foreach (@extlinks) { 1048: $httpref{'httpref.'. 1049: &Apache::lonnet::hreflocation($thisdir,$_)}=$thisurl; 1050: } 1051: @extlinks=(); 1052: &Apache::lonnet::appenv(%httpref); 1053: } 1054: 1055: # 1056: # Afterburner handles anchors, highlights and links 1057: # 1058: sub afterburn { 1059: my $result=shift; 1060: &Apache::loncommon::get_unprocessed_cgi($ENV{'QUERY_STRING'}, 1061: ['highlight','anchor','link']); 1062: if ($ENV{'form.highlight'}) { 1063: foreach (split(/\,/,$ENV{'form.highlight'})) { 1064: my $anchorname=$_; 1065: my $matchthis=$anchorname; 1066: $matchthis=~s/\_+/\\s\+/g; 1067: $result=~s/($matchthis)/\<font color=\"red\"\>$1\<\/font\>/gs; 1068: } 1069: } 1070: if ($ENV{'form.link'}) { 1071: foreach (split(/\,/,$ENV{'form.link'})) { 1072: my ($anchorname,$linkurl)=split(/\>/,$_); 1073: my $matchthis=$anchorname; 1074: $matchthis=~s/\_+/\\s\+/g; 1075: $result=~s/($matchthis)/\<a href=\"$linkurl\"\>$1\<\/a\>/gs; 1076: } 1077: } 1078: if ($ENV{'form.anchor'}) { 1079: my $anchorname=$ENV{'form.anchor'}; 1080: my $matchthis=$anchorname; 1081: $matchthis=~s/\_+/\\s\+/g; 1082: $result=~s/($matchthis)/\<a name=\"$anchorname\"\>$1\<\/a\>/s; 1083: $result.=(<<"ENDSCRIPT"); 1084: <script type="text/javascript"> 1085: document.location.hash='$anchorname'; 1086: </script> 1087: ENDSCRIPT 1088: } 1089: return $result; 1090: } 1091: 1092: sub storefile { 1093: my ($file,$contents)=@_; 1094: if (my $fh=Apache::File->new('>'.$file)) { 1095: print $fh $contents; 1096: $fh->close(); 1097: } else { 1098: &warning("Unable to save file $file"); 1099: } 1100: } 1101: 1102: sub createnewhtml { 1103: my $filecontents=(<<SIMPLECONTENT); 1104: <html> 1105: <head> 1106: <title> 1107: Title of Document Goes Here 1108: </title> 1109: </head> 1110: <body bgcolor="#FFFFFF"> 1111: 1112: Body of Document Goes Here 1113: 1114: </body> 1115: </html> 1116: SIMPLECONTENT 1117: return $filecontents; 1118: } 1119: 1120: 1121: sub inserteditinfo { 1122: my ($result,$filecontents)=@_; 1123: $filecontents = &HTML::Entities::encode($filecontents); 1124: # my $editheader='<a href="#editsection">Edit below</a><hr />'; 1125: my $xml_help = '<table><tr><td>'. 1126: &Apache::loncommon::help_open_topic("Greek_Symbols",'Greek Symbols', 1127: undef,undef,600) 1128: .'</td><td>'. 1129: &Apache::loncommon::help_open_topic("Other_Symbols",'Other Symbols', 1130: undef,undef,600) 1131: .'</td></tr></table>'; 1132: my $buttons=(<<BUTTONS); 1133: <input type="submit" name="attemptclean" 1134: value="Save and then attempt to clean HTML" /> 1135: <input type="submit" name="savethisfile" value="Save this" /> 1136: <input type="submit" name="viewmode" value="View" /> 1137: BUTTONS 1138: my $editfooter=(<<ENDFOOTER); 1139: <hr /> 1140: <a name="editsection" /> 1141: <form method="post"> 1142: $xml_help 1143: <input type="hidden" name="editmode" value="Edit" /> 1144: $buttons<br /> 1145: <textarea cols="80" rows="40" name="filecont">$filecontents</textarea> 1146: <br />$buttons 1147: <br /> 1148: </form> 1149: ENDFOOTER 1150: # $result=~s/(\<body[^\>]*\>)/$1$editheader/is; 1151: $result=~s/(\<\/body\>)/$editfooter/is; 1152: return $result; 1153: } 1154: 1155: sub get_target { 1156: my $viewgrades=&Apache::lonnet::allowed('vgr',$ENV{'request.course.id'}); 1157: if ( $ENV{'request.state'} eq 'published') { 1158: if ( defined($ENV{'form.grade_target'}) 1159: && ($viewgrades == 'F' )) { 1160: return ($ENV{'form.grade_target'}); 1161: } elsif (defined($ENV{'form.grade_target'})) { 1162: if (($ENV{'form.grade_target'} eq 'web') || 1163: ($ENV{'form.grade_target'} eq 'tex') ) { 1164: return $ENV{'form.grade_target'} 1165: } else { 1166: return 'web'; 1167: } 1168: } else { 1169: return 'web'; 1170: } 1171: } elsif ($ENV{'request.state'} eq 'construct') { 1172: if ( defined($ENV{'form.grade_target'})) { 1173: return ($ENV{'form.grade_target'}); 1174: } else { 1175: return 'web'; 1176: } 1177: } else { 1178: return 'web'; 1179: } 1180: } 1181: 1182: sub handler { 1183: my $request=shift; 1184: 1185: my $target=&get_target(); 1186: 1187: $Apache::lonxml::debug=0; 1188: 1189: if ($ENV{'browser.mathml'}) { 1190: $request->content_type('text/xml'); 1191: } else { 1192: $request->content_type('text/html'); 1193: } 1194: &Apache::loncommon::no_cache($request); 1195: $request->send_http_header; 1196: 1197: return OK if $request->header_only; 1198: 1199: 1200: my $file=&Apache::lonnet::filelocation("",$request->uri); 1201: # 1202: # Edit action? Save file. 1203: # 1204: unless ($ENV{'request.state'} eq 'published') { 1205: if (($ENV{'form.savethisfile'}) || ($ENV{'form.attemptclean'})) { 1206: &storefile($file,$ENV{'form.filecont'}); 1207: } 1208: } 1209: my %mystyle; 1210: my $result = ''; 1211: my $filecontents=&Apache::lonnet::getfile($file); 1212: if ($filecontents eq -1) { 1213: $result=(<<ENDNOTFOUND); 1214: <html> 1215: <head> 1216: <title>File not found</title> 1217: </head> 1218: <body bgcolor="#FFFFFF"> 1219: <b>File not found: $file</b> 1220: </body> 1221: </html> 1222: ENDNOTFOUND 1223: $filecontents=''; 1224: if ($ENV{'request.state'} ne 'published') { 1225: $filecontents=&createnewhtml(); 1226: $ENV{'form.editmode'}='Edit'; #force edit mode 1227: } 1228: } else { 1229: unless ($ENV{'request.state'} eq 'published') { 1230: if ($ENV{'form.attemptclean'}) { 1231: $filecontents=&htmlclean($filecontents,1); 1232: } 1233: } 1234: if (!$ENV{'form.editmode'} || $ENV{'form.viewmode'}) { 1235: $result = &Apache::lonxml::xmlparse($request,$target,$filecontents, 1236: '',%mystyle); 1237: } 1238: } 1239: 1240: # 1241: # Edit action? Insert editing commands 1242: # 1243: unless ($ENV{'request.state'} eq 'published') { 1244: if ($ENV{'form.editmode'} && (!($ENV{'form.viewmode'}))) { 1245: my $displayfile=$request->uri; 1246: $displayfile=~s/^\/[^\/]*//; 1247: $result='<html><body bgcolor="#FFFFFF"><h3>'.$displayfile. 1248: '</h3></body></html>'; 1249: $result=&inserteditinfo($result,$filecontents); 1250: } 1251: } 1252: 1253: writeallows($request->uri); 1254: 1255: # If we're editing, show the filename of the resource in the frame's main 1256: # title 1257: if ($ENV{'form.editmode'}) { 1258: my $filename = $request->uri; 1259: # Everything after the last / 1260: $filename = substr($filename, rindex($filename, '/') + 1); 1261: $result = substr($result, 0, rindex($result, '</html>')); 1262: $result .= "<script>top.document.title = '$filename - LON-CAPA Construction Space';</script>"; 1263: $result .= "\n</html>\n"; 1264: } 1265: 1266: 1267: $request->print($result); 1268: 1269: return OK; 1270: } 1271: 1272: sub debug { 1273: if ($Apache::lonxml::debug eq 1) { 1274: $|=1; 1275: print('<font size="-2"<pre>DEBUG:'.&HTML::Entities::encode($_[0])."</pre></font>\n"); 1276: } 1277: } 1278: 1279: sub error { 1280: $errorcount++; 1281: if (($Apache::lonxml::debug eq 1) || ($ENV{'request.state'} eq 'construct') ) { 1282: # If printing in construction space, put the error inside <pre></pre> 1283: print "<b>ERROR:</b>".join("\n",@_)."\n"; 1284: } else { 1285: print "<b>An Error occured while processing this resource. The instructor has been notified.</b> <br />"; 1286: #notify author 1287: &Apache::lonmsg::author_res_msg($ENV{'request.filename'},join('<br />',@_)); 1288: #notify course 1289: if ( $ENV{'request.course.id'} ) { 1290: my (undef,%users)=&Apache::lonfeedback::decide_receiver(undef,0,1,1,1); 1291: my $declutter=&Apache::lonnet::declutter($ENV{'request.filename'}); 1292: foreach (keys %users) { 1293: my ($user,$domain) = split(/:/, $_); 1294: &Apache::lonmsg::user_normal_msg($user,$domain, 1295: "Error [$declutter]",join('<br />',@_)); 1296: } 1297: } 1298: 1299: #FIXME probably shouldn't have me get everything forever. 1300: &Apache::lonmsg::user_normal_msg('albertel','msu',"Error in $ENV{'request.filename'}",join('<br />',@_)); 1301: #&Apache::lonmsg::user_normal_msg('albertel','103',"Error in $ENV{'request.filename'}",$_[0]); 1302: } 1303: } 1304: 1305: sub warning { 1306: $warningcount++; 1307: if ($ENV{'request.state'} eq 'construct') { 1308: print "<b>W</b>ARNING<b>:</b>".join('<br />',@_)."<br />\n"; 1309: } 1310: } 1311: 1312: sub get_param { 1313: my ($param,$parstack,$safeeval,$context,$case_insensitive) = @_; 1314: if ( ! $context ) { $context = -1; } 1315: my $args =''; 1316: if ( $#$parstack > (-2-$context) ) { $args=$$parstack[$context]; } 1317: if ( ! $args ) { return undef; } 1318: if ( $case_insensitive ) { 1319: if ($args =~ s/(my \$)(\Q$param\E)(=\")/$1.lc($2).$3/ei) { 1320: return &Apache::run::run("{$args;".'return $'.$param.'}', 1321: $safeeval); #' 1322: } else { 1323: return undef; 1324: } 1325: } else { 1326: if ( $args =~ /my \$\Q$param\E=\"/ ) { 1327: return &Apache::run::run("{$args;".'return $'.$param.'}', 1328: $safeeval); #' 1329: } else { 1330: return undef; 1331: } 1332: } 1333: } 1334: 1335: sub get_param_var { 1336: my ($param,$parstack,$safeeval,$context,$case_insensitive) = @_; 1337: if ( ! $context ) { $context = -1; } 1338: my $args =''; 1339: if ( $#$parstack > (-2-$context) ) { $args=$$parstack[$context]; } 1340: &Apache::lonxml::debug("Args are $args param is $param"); 1341: if ($case_insensitive) { 1342: if (! ($args=~s/(my \$)(\Q$param\E)(=\")/$1.lc($2).$3/ei)) { 1343: return undef; 1344: } 1345: } elsif ( $args !~ /my \$\Q$param\E=\"/ ) { return undef; } 1346: my $value=&Apache::run::run("{$args;".'return $'.$param.'}',$safeeval); #' 1347: &Apache::lonxml::debug("first run is $value"); 1348: if ($value =~ /^[\$\@\%]\w+$/) { 1349: &Apache::lonxml::debug("doing second"); 1350: my @result=&Apache::run::run("return $value",$safeeval,1); 1351: if (!defined($result[0])) { 1352: return $value 1353: } else { 1354: if (wantarray) { return @result; } else { return $result[0]; } 1355: } 1356: } else { 1357: return $value; 1358: } 1359: } 1360: 1361: sub register_insert { 1362: my @data = split /\n/, &Apache::lonnet::getfile('/home/httpd/lonTabs/insertlist.tab'); 1363: my $i; 1364: my $tagnum=0; 1365: my @order; 1366: for ($i=0;$i < $#data; $i++) { 1367: my $line = $data[$i]; 1368: if ( $line =~ /^\#/ || $line =~ /^\s*\n/) { next; } 1369: if ( $line =~ /TABLE/ ) { last; } 1370: my ($tag,$descrip,$color,$function,$show) = split(/,/, $line); 1371: if ($tag) { 1372: $insertlist{"$tagnum.tag"} = $tag; 1373: $insertlist{"$tagnum.description"} = $descrip; 1374: $insertlist{"$tagnum.color"} = $color; 1375: $insertlist{"$tagnum.function"} = $function; 1376: if (!defined($show)) { $show='yes'; } 1377: $insertlist{"$tagnum.show"}= $show; 1378: $insertlist{"$tag.num"}=$tagnum; 1379: $tagnum++; 1380: } 1381: } 1382: $i++; #skipping TABLE line 1383: $tagnum = 0; 1384: for (;$i < $#data;$i++) { 1385: my $line = $data[$i]; 1386: my ($mnemonic,@which) = split(/ +/,$line); 1387: my $tag = $insertlist{"$tagnum.tag"}; 1388: for (my $j=0;$j <=$#which;$j++) { 1389: if ( $which[$j] eq 'Y' ) { 1390: if ($insertlist{"$j.show"} ne 'no') { 1391: push(@{ $insertlist{"$tag.which"} },$j); 1392: } 1393: } 1394: } 1395: $tagnum++; 1396: } 1397: } 1398: 1399: sub description { 1400: my ($token)=@_; 1401: my $tagnum; 1402: my $tag=$token->[1]; 1403: foreach my $namespace (reverse @Apache::lonxml::namespace) { 1404: my $testtag=$namespace.'::'.$tag; 1405: $tagnum=$insertlist{"$testtag.num"}; 1406: if (defined($tagnum)) { last; } 1407: } 1408: if (!defined ($tagnum)) { $tagnum=$Apache::lonxml::insertlist{"$tag.num"}; } 1409: return $insertlist{$tagnum.'.description'}; 1410: } 1411: 1412: # ----------------------------------------------------------------- whichuser 1413: # returns a list of $symb, $courseid, $domain, $name that is correct for 1414: # calls to lonnet functions for this setup. 1415: # - looks for form.grade_ parameters 1416: sub whichuser { 1417: my ($symb,$courseid,$domain,$name,$publicuser); 1418: if (defined($ENV{'form.grade_symb'})) { 1419: my $tmp_courseid=$ENV{'form.grade_courseid'}; 1420: my $allowed=&Apache::lonnet::allowed('mgr',$tmp_courseid); 1421: if ($allowed) { 1422: $symb=$ENV{'form.grade_symb'}; 1423: $courseid=$ENV{'form.grade_courseid'}; 1424: $domain=$ENV{'form.grade_domain'}; 1425: $name=$ENV{'form.grade_username'}; 1426: } 1427: } else { 1428: $symb=&Apache::lonnet::symbread(); 1429: $courseid=$ENV{'request.course.id'}; 1430: $domain=$ENV{'user.domain'}; 1431: $name=$ENV{'user.name'}; 1432: if ($name eq 'public' && $domain eq 'public') { 1433: if (!defined($ENV{'form.username'})) { 1434: $ENV{'form.username'}.=time.rand(10000000); 1435: } 1436: $name.=$ENV{'form.username'}; 1437: } 1438: } 1439: return ($symb,$courseid,$domain,$name,$publicuser); 1440: } 1441: 1442: 1; 1443: __END__ 1444: 1445: