loncom/xml/londefdef.pm - view

File: [LON-CAPA] / loncom / xml / londefdef.pm
Revision 1.282: download - view: text, annotated - select for diffs
Fri Jul 22 11:44:51 2005 UTC (18 years, 10 months ago) by foxr
Branches: MAIN
CVS tags: HEAD

defect 4246 : in get_eps_image:  Retain information about the original
file extension so that a single resource can print with images like:
file.gif and file.jpg e.g.  The idea is that instead of both of these
converting to file.eps they'll convert to file.gif.eps and file.jpg.eps
respectively.
  See also r1.84 for ../interface/printout.pl
which must couple to this change as it is what actually generates the .eps
files.

1: # The LearningOnline Network with CAPA 2: # Tags Default Definition Module 3: # 4: # $Id: londefdef.pm,v 1.282 2005/07/22 11:44:51 foxr Exp $ 5: # 6: # 7: # Copyright Michigan State University Board of Trustees 8: # 9: # This file is part of the LearningOnline Network with CAPA (LON-CAPA). 10: # 11: # LON-CAPA is free software; you can redistribute it and/or modify 12: # it under the terms of the GNU General Public License as published by 13: # the Free Software Foundation; either version 2 of the License, or 14: # (at your option) any later version. 15: # 16: # LON-CAPA is distributed in the hope that it will be useful, 17: # but WITHOUT ANY WARRANTY; without even the implied warranty of 18: # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 19: # GNU General Public License for more details. 20: # 21: # You should have received a copy of the GNU General Public License 22: # along with LON-CAPA; if not, write to the Free Software 23: # Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA 24: # 25: # /home/httpd/html/adm/gpl.txt 26: # 27: # http://www.lon-capa.org/ 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: package Apache::londefdef; 41: 42: use Apache::lonnet; 43: use strict; 44: use Apache::lonxml; 45: use Apache::File(); 46: use Image::Magick; 47: use Apache::lonmenu(); 48: use Apache::lonmeta(); 49: use Apache::Constants qw(:common); 50: use File::Basename; 51: 52: BEGIN { 53: 54: &Apache::lonxml::register('Apache::londefdef',('a','abbr','acronym','accessrule','address','allow','applet','area','b','base','basefont','bgo','bgsound','big','blink','blockquote','blankspace','body','br','button','caption','center','cite','code','col','colgroup','dd','del','dfn','dir','div','dl','dt','em','embed','externallink','fieldset','font','form','frame','frameset','h1','h2','h3','h4','h5','h6','head','hr','html','i','iframe','img','input','ins','insert','isindex','kbd','keygen','label','layer','legend','li','link','m','map','marquee','menu','meta','multicol','nobr','noembed','noframes','nolayer','noscript','object','ol','optgroup','option','output','p','param','pre','q','s','samp','select','server','small','spacer','span','strike','strong','sub','sup','table','tbody','td','textarea','tfoot','th','thead','title','tr','tt','tthoption','u','ul','var','wbr','hideweboutput')); 55: 56: } 57: 58: sub initialize_londefdef { 59: $Apache::londefdef::TD_redirection=0; 60: @Apache::londefdef::table = (); 61: $Apache::londefdef::select=0; 62: undef(@Apache::londefdef::description); 63: @Apache::londefdef::DD=(0); 64: @Apache::londefdef::DT=(0); 65: @Apache::londefdef::seenDT=(0); 66: $Apache::londefdef::list_index=0; 67: } 68: 69: #======================= TAG SUBROUTINES ===================== 70: #-- <output> 71: sub start_output { 72: my ($target) = @_; 73: if ($target eq 'meta') { $Apache::lonxml::metamode--; } 74: return ''; 75: } 76: sub end_output { 77: my ($target) = @_; 78: if ($target eq 'meta') { $Apache::lonxml::metamode++; } 79: return ''; 80: } 81: #-- <m> tag 82: sub start_m { 83: my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style) = @_; 84: my $currentstring = ''; 85: my $inside = &Apache::lonxml::get_all_text_unbalanced("/m",$parser); 86: if ($target eq 'web' || $target eq 'analyze') { 87: &Apache::lonxml::debug("M is starting with:$inside:"); 88: my $eval=&Apache::lonxml::get_param('eval',$parstack,$safeeval); 89: if ($eval eq 'on') { 90: $inside=&Apache::run::evaluate($inside,$safeeval,$$parstack[-1]); 91: #&Apache::lonxml::debug("M is evaulated to:$inside:"); 92: } 93: my $display=&Apache::lonxml::get_param('display',$parstack,$safeeval); 94: $currentstring = &Apache::lontexconvert::converted(\$inside,$display); 95: if ($Apache::lontexconvert::errorstring) { 96: &Apache::lonxml::warning("tth error: ". 97: $Apache::lontexconvert::errorstring); 98: $Apache::lontexconvert::errorstring=''; 99: } 100: #&Apache::lonxml::debug("M is ends with:$currentstring:"); 101: $Apache::lonxml::post_evaluate=0; 102: } elsif ($target eq 'tex') { 103: $currentstring = $inside; 104: my $eval=&Apache::lonxml::get_param('eval',$parstack,$safeeval); 105: if ($eval eq 'on') { 106: $currentstring=&Apache::run::evaluate($currentstring,$safeeval,$$parstack[-1]); 107: } 108: if ($currentstring=~/^(\s*\\\\\s*)*$/) {$currentstring = ' \vskip 0 mm ';} 109: # detect simple math mode entry exits, and convert them 110: # to use \ensuremath 111: if ($currentstring=~/^\s*\$[^\$].*[^\$]\$\s*$/) { 112: $currentstring=~s/^\$//; 113: $currentstring=~s/\$$//; 114: $currentstring='\ensuremath{'.$currentstring.'}'; 115: } 116: $Apache::lonxml::post_evaluate=0; 117: } 118: return $currentstring; 119: } 120: 121: sub end_m { 122: my ($target,$token) = @_; 123: my $currentstring = ''; 124: if ($target eq 'tex') { 125: $currentstring = ""; 126: } 127: return $currentstring; 128: } 129: 130: sub start_tthoption { 131: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_; 132: my $result; 133: if ($target eq 'web') { 134: my $inside = &Apache::lonxml::get_all_text("/tthoption",$parser); 135: $inside=~s/^\s*//; 136: if ($env{'browser.mathml'}) { 137: &tth::ttmoptions($inside); 138: } else { 139: &tth::tthoptions($inside); 140: } 141: } 142: return $result; 143: } 144: 145: sub end_tthoption { 146: my ($target,$token) = @_; 147: my $result; 148: return $result; 149: } 150: 151: #-- <html> tag (end tag optional) 152: sub start_html { 153: my ($target,$token) = @_; 154: my $currentstring = ''; 155: my $options=$env{'course.'.$env{'request.course.id'}.'.tthoptions'}; 156: &Apache::lontexconvert::init_tth(); 157: if ($target eq 'web' || $target eq 'edit' || $target eq 'webgrade' ) { 158: $currentstring = &Apache::lonxml::xmlbegin(); 159: } elsif ($target eq 'tex') { 160: $currentstring .= '\documentclass[letterpaper]{article}'; 161: if (($env{'form.latex_type'}=~'batchmode') || 162: (!$env{'request.role.adv'})) {$currentstring .='\batchmode';} 163: $currentstring .= '\newcommand{\keephidden}[1]{}'. 164: '\renewcommand{\deg}{$^{\circ}$}'. 165: '\usepackage{longtable}'. 166: '\usepackage{textcomp}'. 167: '\usepackage{makeidx}'. 168: '\usepackage[dvips]{graphicx}'. 169: '\usepackage{picins}'. 170: '\usepackage{epsfig}'. 171: '\usepackage{calc}'. 172: '\usepackage{amsmath}'. 173: '\usepackage{amssymb}'. 174: '\usepackage{amsfonts}'. 175: '\usepackage{amsthm}'. 176: '\usepackage{amscd}'. 177: '\newenvironment{choicelist}{\begin{list}{}{\setlength{\rightmargin}{0in}\setlength{\leftmargin}{0.13in}\setlength{\topsep}{0.05in}\setlength{\itemsep}{0.022in}\setlength{\parsep}{0in}\setlength{\belowdisplayskip}{0.04in}\setlength{\abovedisplayskip}{0.05in}\setlength{\abovedisplayshortskip}{-0.04in}\setlength{\belowdisplayshortskip}{0.04in}}}{\end{list}}'. 178: '\renewenvironment{theindex}{\begin{list}{}{{\vskip 1mm \noindent \large\textbf{Index}} \newline \setlength{\rightmargin}{0in}\setlength{\leftmargin}{0.13in}\setlength{\topsep}{0.01in}\setlength{\itemsep}{0.1in}\setlength{\parsep}{-0.02in}\setlength{\belowdisplayskip}{0.01in}\setlength{\abovedisplayskip}{0.01in}\setlength{\abovedisplayshortskip}{-0.04in}\setlength{\belowdisplayshortskip}{0.01in}}}{\end{list}}'; 179: } 180: return $currentstring; 181: } 182: 183: sub end_html { 184: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_; 185: my $currentstring = ''; 186: if ($target eq 'web') { 187: $currentstring = '</html>'; 188: } 189: return $currentstring; 190: } 191: 192: #-- <head> tag (end tag optional) 193: sub start_head { 194: my ($target,$token) = @_; 195: my $currentstring = ''; 196: if ($target eq 'web') { 197: $currentstring = $token->[4].&Apache::lonxml::fontsettings(); 198: } 199: return $currentstring; 200: } 201: 202: sub end_head { 203: my ($target,$token) = @_; 204: my $currentstring = ''; 205: if ($target eq 'web' && $env{'request.state'} eq 'published') { 206: $currentstring = &Apache::lonmenu::registerurl(undef,$target). 207: $token->[2]; 208: } 209: return $currentstring; 210: } 211: 212: #-- <map> tag (end tag required) 213: sub start_map { 214: my ($target,$token) = @_; 215: my $currentstring = ''; 216: if ($target eq 'web') { 217: $currentstring = $token->[4]; 218: } 219: return $currentstring; 220: } 221: 222: sub end_map { 223: my ($target,$token) = @_; 224: my $currentstring = ''; 225: if ($target eq 'web') { 226: $currentstring = $token->[2]; 227: } 228: return $currentstring; 229: } 230: 231: #-- <select> tag (end tag required) 232: sub start_select { 233: my ($target,$token) = @_; 234: my $currentstring = ''; 235: if ($target eq 'web') { 236: $currentstring = $token->[4]; 237: } elsif ($target eq 'tex') { 238: $Apache::londefdef::select=0; 239: } 240: return $currentstring; 241: } 242: 243: sub end_select { 244: my ($target,$token) = @_; 245: my $currentstring = ''; 246: if ($target eq 'web') { 247: $currentstring = $token->[2]; 248: } 249: return $currentstring; 250: } 251: 252: #-- <option> tag (end tag optional) 253: sub start_option { 254: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_; 255: my $currentstring = ''; 256: if ($target eq 'web') { 257: $currentstring = $token->[4]; 258: } elsif ($target eq 'tex') { 259: $Apache::londefdef::select++; 260: if ($Apache::londefdef::select == 1) { 261: $currentstring='\noindent\fbox{'.&Apache::lonxml::get_param('value',$parstack,$safeeval).'}\keephidden{'; 262: } else { 263: $currentstring='\keephidden{'; 264: } 265: } 266: return $currentstring; 267: } 268: 269: sub end_option { 270: my ($target,$token) = @_; 271: my $currentstring = ''; 272: if ($target eq 'web') { 273: $currentstring = $token->[2]; 274: } elsif ($target eq 'tex') { 275: $currentstring='}'; 276: } 277: return $currentstring; 278: } 279: 280: #-- <input> tag (end tag forbidden) 281: sub start_input { 282: my ($target,$token) = @_; 283: my $currentstring = ''; 284: if ($target eq 'web') { 285: $currentstring = $token->[4]; 286: } 287: return $currentstring; 288: } 289: 290: sub end_input { 291: my ($target,$token) = @_; 292: my $currentstring = ''; 293: if ($target eq 'web') { 294: $currentstring = $token->[2]; 295: } 296: return $currentstring; 297: } 298: 299: #-- <textarea> tag (end tag required) 300: sub start_textarea { 301: my ($target,$token) = @_; 302: my $currentstring = ''; 303: if ($target eq 'web') { 304: $currentstring = $token->[4]; 305: } 306: return $currentstring; 307: } 308: 309: sub end_textarea { 310: my ($target,$token) = @_; 311: my $currentstring = ''; 312: if ($target eq 'web') { 313: $currentstring = $token->[2]; 314: } 315: return $currentstring; 316: } 317: 318: #-- <form> tag (end tag required) 319: sub start_form { 320: my ($target,$token) = @_; 321: my $currentstring = ''; 322: if ($target eq 'web') { 323: $currentstring = $token->[4]; 324: } 325: return $currentstring; 326: } 327: 328: sub end_form { 329: my ($target,$token) = @_; 330: my $currentstring = ''; 331: if ($target eq 'web') { 332: $currentstring = $token->[2]; 333: } 334: return $currentstring; 335: } 336: 337: #-- <title> tag (end tag required) 338: sub start_title { 339: my ($target,$token) = @_; 340: my $currentstring = ''; 341: if ($target eq 'web') { 342: $currentstring = $token->[4]; 343: } elsif ($target eq 'tex') { 344: $currentstring .= '\keephidden{Title of the document: ' 345: } 346: if ($target eq 'meta') { 347: $currentstring='<title>'; 348: &start_output($target); 349: } 350: return $currentstring; 351: } 352: 353: sub end_title { 354: my ($target,$token) = @_; 355: my $currentstring = ''; 356: if ($target eq 'web') { 357: $currentstring = $token->[2]; 358: } elsif ($target eq 'tex') { 359: $currentstring .= '}'; 360: } 361: if ($target eq 'meta') { 362: &end_output($target); 363: $currentstring='</title>'; 364: } 365: return $currentstring; 366: } 367: 368: #-- <meta> tag (end tag forbidden) 369: sub start_meta { 370: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_; 371: my $currentstring = ''; 372: if ($target eq 'web') { 373: my $args=''; 374: if ( $#$parstack > -1 ) { $args=$$parstack[$#$parstack]; } 375: if ($args eq '') { 376: &Apache::lonxml::get_all_text("/meta",$parser); 377: } else { 378: $currentstring = $token->[4]; 379: } 380: } elsif ($target eq 'meta') { 381: unless (&Apache::lonxml::get_param 382: ('http-equiv',$parstack,$safeeval,undef,1)) { 383: my $name=$token->[2]->{'name'}; 384: $name=~tr/A-Z/a-z/; 385: $name=~s/\s/\_/gs; 386: $name=~s/\W//gs; 387: if ($name) { 388: $currentstring='<'.$name; 389: my $display=&Apache::lonxml::get_param 390: ('display',$parstack,$safeeval,undef,1); 391: if ($display) { 392: $display=~s/\"/\'/g; 393: $currentstring.=' display="'.$display.'"'; 394: } 395: $currentstring.='>'. 396: &Apache::lonxml::get_param 397: ('content',$parstack,$safeeval,undef,1). 398: '</'.$name.'>'; 399: } 400: my $display=&Apache::lonxml::get_param 401: ('display',$parstack,$safeeval,undef,1); 402: if ($display) { 403: $display=&HTML::Entities::encode($display,'<>&"'); 404: $currentstring.='<'.$name.'.display>'.$display. 405: '</'.$name.'.display>'; 406: } 407: } 408: } elsif ($target eq 'tex') { 409: my $content=&Apache::lonxml::get_param('content',$parstack,$safeeval); 410: my $name=&Apache::lonxml::get_param('name',$parstack,$safeeval); 411: if ((not defined $content) && (not defined $name)) { 412: &Apache::lonxml::startredirection(); 413: } 414: } 415: return $currentstring; 416: } 417: 418: sub end_meta { 419: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_; 420: my $currentstring = ''; 421: if ($target eq 'web') { 422: my $args=''; 423: if ( $#$parstack > -1 ) { $args=$$parstack[$#$parstack]; } 424: if ($args ne '') { 425: $currentstring = $token->[4]; 426: } 427: } elsif ($target eq 'tex') { 428: my $content=&Apache::lonxml::get_param('content',$parstack,$safeeval); 429: my $name=&Apache::lonxml::get_param('name',$parstack,$safeeval); 430: if ((not defined $content) && (not defined $name)) { 431: &Apache::lonxml::endredirection(); 432: } 433: } 434: return $currentstring; 435: } 436: 437: # accessrule 438: sub start_accessrule { 439: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_; 440: my $currentstring = ''; 441: my $eff=&Apache::lonxml::get_param 442: ('effect',$parstack,$safeeval,undef,1); 443: my $realm=&Apache::lonxml::get_param 444: ('realm',$parstack,$safeeval,undef,1); 445: my $role=&Apache::lonxml::get_param 446: ('role',$parstack,$safeeval,undef,1); 447: $realm=~s/\s+//g; 448: $realm=~s/\//\_/g; 449: $realm=~s/^\_//; 450: $realm=~s/\W/\;/g; 451: $role=~s/\s+//g; 452: $role=~s/\//\_/g; 453: $role=~s/\W/\;/g; 454: if ($target eq 'web') { 455: my $args=''; 456: if ( $#$parstack > -1 ) { $args=$$parstack[$#$parstack]; } 457: if ($args eq '') { 458: &Apache::lonxml::get_all_text("/accessrule",$parser); 459: } else { 460: $currentstring = $token->[4]; 461: } 462: } 463: if ($target eq 'meta') { 464: $currentstring='<rule>'.$eff.':'.$realm.':'.$role.'</rule>'; 465: } 466: return $currentstring; 467: } 468: 469: sub end_accessrule { 470: my ($target,$token,$tagstack,$parstack,$parser) = @_; 471: my $currentstring = ''; 472: if ($target eq 'web') { 473: my $args=''; 474: if ( $#$parstack > -1 ) { $args=$$parstack[$#$parstack]; } 475: if ($args ne '') { 476: $currentstring = $token->[4]; 477: } 478: } 479: return $currentstring; 480: } 481: 482: #-- <body> tag (end tag required) 483: sub start_body { 484: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_; 485: my $currentstring = ''; 486: 487: if ($target eq 'web') { 488: if ($Apache::lonhomework::parsing_a_problem) { 489: &Apache::lonxml::warning("<body> tag found inside of <problem> tag this can cause problems."); 490: return ''; 491: } 492: if (!$Apache::lonxml::registered && 493: $env{'request.state'} eq 'published') { 494: $currentstring.='<head>'. 495: &Apache::lonmenu::registerurl(undef,$target).'</head>'; 496: } 497: # Accessibility 498: if ($env{'browser.imagesuppress'} eq 'on') { 499: delete($token->[2]->{'background'}); 500: } 501: if ($env{'browser.fontenhance'} eq 'on') { 502: my $style=''; 503: foreach my $key (keys(%{$token->[2]})) { 504: if ($key =~ /^style$/i) { 505: $style.=$token->[2]->{$key}.';'; 506: delete($token->[2]->{$key}); 507: } 508: } 509: $token->[2]->{'style'}=$style.'; font-size: x-large;'; 510: } 511: if ($env{'browser.blackwhite'} eq 'on') { 512: delete($token->[2]->{'font'}); 513: delete($token->[2]->{'link'}); 514: delete($token->[2]->{'alink'}); 515: delete($token->[2]->{'vlink'}); 516: delete($token->[2]->{'bgcolor'}); 517: delete($token->[2]->{'background'}); 518: } 519: # Overload loads 520: my $onLoad=''; 521: foreach my $key (keys(%{$token->[2]})) { 522: if ($key =~ /^onload$/i) { 523: $onLoad.=$token->[2]->{$key}.';'; 524: delete($token->[2]->{$key}); 525: } 526: } 527: $token->[2]->{'onload'}=&Apache::lonmenu::loadevents().';'.$onLoad; 528: my $onUnload=''; 529: foreach my $key (keys(%{$token->[2]})) { 530: if ($key =~ /^onunload$/i) { 531: $onUnload.=$token->[2]->{$key}.';'; 532: delete($token->[2]->{$key}); 533: } 534: } 535: $token->[2]->{'onunload'}=&Apache::lonmenu::unloadevents(). 536: ';'.$onUnload; 537: 538: $currentstring .= '<'.$token->[1]; 539: foreach (keys %{$token->[2]}) { 540: $currentstring.=' '.$_.'="'.$token->[2]->{$_}.'"'; 541: } 542: $currentstring.='>'; 543: if ($env{'request.state'} ne 'published') { 544: if ($env{'environment.remote'} eq 'off') { 545: $currentstring.= 546: &Apache::lonmenu::constspaceform(). 547: &Apache::lonmenu::menubuttons(1,'web',1); 548: } 549: $currentstring.=(<<EDITBUTTON); 550: <form method="post"> 551: <input type="submit" name="editmode" accesskey="e" value="Edit" /> 552: </form> 553: EDITBUTTON 554: } else { 555: $currentstring.=&Apache::lonmenu::menubuttons(undef,$target,1); 556: } 557: $currentstring.=&Apache::lonxml::message_location(); 558: } elsif ($target eq 'tex') { 559: $currentstring = '\begin{document}'; 560: } 561: return $currentstring; 562: } 563: 564: sub end_body { 565: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_; 566: my $currentstring = &end_p(); # Close off unclosed <p> 567: if ($target eq 'web') { 568: $currentstring .= &Apache::lonxml::xmlend($target,$parser); 569: } elsif ($target eq 'tex') { 570: $currentstring .= '\strut\newline\noindent\makebox[\textwidth/$number_of_columns][b]{\hrulefill}\newline\noindent \end{document}'; 571: } 572: return $currentstring; 573: } 574: 575: #-- <center> tag (end tag required) 576: sub start_center { 577: my ($target,$token) = @_; 578: my $currentstring = &end_p(); # Close off any prior para. 579: if ($target eq 'web') { 580: $currentstring .= $token->[4]; 581: } elsif ($target eq 'tex') { 582: $currentstring .= '\begin{center}'; 583: } 584: return $currentstring; 585: } 586: 587: sub end_center { 588: my ($target,$token) = @_; 589: my $currentstring = ''; 590: if ($target eq 'web') { 591: $currentstring = $token->[2]; 592: } elsif ($target eq 'tex') { 593: $currentstring = '\end{center}'; 594: } 595: return $currentstring; 596: } 597: 598: #-- <b> tag (end tag required) 599: # NOTE: In TeX mode disables internal <p> 600: sub start_b { 601: my ($target,$token) = @_; 602: my $currentstring = ''; 603: if ($target eq 'web') { 604: $currentstring = $token->[4]; 605: } elsif ($target eq 'tex') { 606: &disable_para(); 607: $currentstring .= '\textbf{'; 608: } 609: return $currentstring; 610: } 611: 612: sub end_b { 613: my ($target,$token) = @_; 614: my $currentstring = ''; 615: if ($target eq 'web') { 616: $currentstring = $token->[2]; 617: } elsif ($target eq 'tex') { 618: &enable_para(); 619: $currentstring = '}'; 620: } 621: return $currentstring; 622: } 623: 624: #-- <strong> tag (end tag required) 625: # NOTE: in TeX mode disables internal <p> 626: sub start_strong { 627: my ($target,$token) = @_; 628: my $currentstring = ''; 629: if ($target eq 'web') { 630: $currentstring = $token->[4]; 631: } elsif ($target eq 'tex') { 632: &disable_para(); 633: $currentstring = '\textbf{'; 634: } 635: return $currentstring; 636: } 637: 638: sub end_strong { 639: my ($target,$token) = @_; 640: my $currentstring = ''; 641: if ($target eq 'web') { 642: $currentstring = $token->[2]; 643: } elsif ($target eq 'tex') { 644: &enable_para(); 645: $currentstring = '}'; 646: } 647: return $currentstring; 648: } 649: 650: #-- <h1> tag (end tag required) 651: sub start_h1 { 652: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_; 653: my $currentstring = &end_p(); # Close off any prior para. 654: if ($target eq 'web') { 655: $currentstring .= $token->[4]; 656: } elsif ($target eq 'tex') { 657: my $pre; 658: my $align=lc(&Apache::lonxml::get_param('align',$parstack,$safeeval,undef,1)); 659: if ($align eq 'center') { 660: $pre='\begin{center}'; 661: } elsif ($align eq 'left') { 662: $pre='\rlap{'; 663: } elsif ($align eq 'right') { 664: $pre=' \hfill \llap{'; 665: } 666: my $TeXsize=&Apache::lonxml::get_param('TeXsize',$parstack,$safeeval,undef,0); 667: if (not defined $TeXsize) {$TeXsize="large";} 668: $currentstring .= '\strut\newline '.$pre.'{\\'.$TeXsize.' \textbf{'; 669: } elsif ($target eq 'meta') { 670: $currentstring.='<subject>'; 671: &start_output($target); 672: } 673: return $currentstring; 674: } 675: 676: sub end_h1 { 677: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_; 678: my $currentstring = ''; 679: if ($target eq 'web') { 680: $currentstring .= $token->[2]; 681: } elsif ($target eq 'tex') { 682: my $post='\vskip 0 mm '; 683: my $align=&Apache::lonxml::get_param('align',$parstack,$safeeval,undef,1); 684: if ($align eq 'center') { 685: $post='\end{center}'; 686: } elsif ($align eq 'left') { 687: $post='} \hfill'.'\vskip 0 mm '; 688: } elsif ($align eq 'right') { 689: $post='}'.'\vskip 0 mm '; 690: } 691: $currentstring .= '}}'.$post; 692: } elsif ($target eq 'meta') { 693: &end_output($target); 694: $currentstring='</subject>'; 695: } 696: return $currentstring; 697: } 698: 699: #-- <h2> tag 700: sub start_h2 { 701: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_; 702: my $currentstring = &end_p(); # Close off any prior para. 703: if ($target eq 'web') { 704: $currentstring .= $token->[4]; 705: } elsif ($target eq 'tex') { 706: my $pre; 707: my $align=&Apache::lonxml::get_param('align',$parstack,$safeeval,undef,1); 708: if ($align eq 'center') { 709: $pre='\begin{center}'; 710: } elsif ($align eq 'left') { 711: $pre='\rlap{'; 712: } elsif ($align eq 'right') { 713: $pre=' \hfill \llap{'; 714: } 715: my $TeXsize=&Apache::lonxml::get_param('TeXsize',$parstack,$safeeval,undef,0); 716: if (not defined $TeXsize) {$TeXsize="large";} 717: $currentstring .= '\strut\newline '.$pre.'{\\'.$TeXsize.' \textbf{'; 718: } 719: return $currentstring; 720: } 721: 722: sub end_h2 { 723: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_; 724: my $currentstring = ''; 725: if ($target eq 'web') { 726: $currentstring .= $token->[2]; 727: } elsif ($target eq 'tex') { 728: my $post='\vskip 0 mm '; 729: my $align=&Apache::lonxml::get_param('align',$parstack,$safeeval,undef,1); 730: if ($align eq 'center') { 731: $post='\end{center}'; 732: } elsif ($align eq 'left') { 733: $post='} \hfill'.'\vskip 0 mm '; 734: } elsif ($align eq 'right') { 735: $post='}'.'\vskip 0 mm '; 736: } 737: $currentstring .= '}}'.$post; 738: } 739: return $currentstring; 740: } 741: 742: #-- <h3> tag 743: sub start_h3 { 744: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_; 745: my $currentstring = &end_p(); # Close off any prior para. 746: if ($target eq 'web') { 747: $currentstring .= $token->[4]; 748: } elsif ($target eq 'tex') { 749: my $pre; 750: my $align=&Apache::lonxml::get_param('align',$parstack,$safeeval,undef,1); 751: if ($align eq 'center') { 752: $pre='\begin{center}'; 753: } elsif ($align eq 'left') { 754: $pre='\rlap{'; 755: } elsif ($align eq 'right') { 756: $pre=' \hfill \llap{'; 757: } 758: my $TeXsize=&Apache::lonxml::get_param('TeXsize',$parstack,$safeeval,undef,0); 759: if (not defined $TeXsize) {$TeXsize="large";} 760: $currentstring .= '\strut\newline '.$pre.'{\\'.$TeXsize.' \textbf{'; 761: } 762: return $currentstring; 763: } 764: 765: sub end_h3 { 766: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_; 767: my $currentstring = ''; 768: if ($target eq 'web') { 769: $currentstring .= $token->[2]; 770: } elsif ($target eq 'tex') { 771: my $post='\vskip 0 mm '; 772: my $align=&Apache::lonxml::get_param('align',$parstack,$safeeval,undef,1); 773: if ($align eq 'center') { 774: $post='\end{center}'; 775: } elsif ($align eq 'left') { 776: $post='} \hfill'.'\vskip 0 mm '; 777: } elsif ($align eq 'right') { 778: $post='}'.'\vskip 0 mm '; 779: } 780: $currentstring .= '}}'.$post; 781: } 782: return $currentstring; 783: } 784: 785: #-- <h4> tag 786: sub start_h4 { 787: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_; 788: my $currentstring = &end_p(); # Close off any prior para. 789: if ($target eq 'web') { 790: $currentstring .= $token->[4]; 791: } elsif ($target eq 'tex') { 792: my $pre; 793: my $align=&Apache::lonxml::get_param('align',$parstack,$safeeval,undef,1); 794: if ($align eq 'center') { 795: $pre='\begin{center}'; 796: } elsif ($align eq 'left') { 797: $pre='\rlap{'; 798: } elsif ($align eq 'right') { 799: $pre=' \hfill \llap{'; 800: } 801: my $TeXsize=&Apache::lonxml::get_param('TeXsize',$parstack,$safeeval,undef,0); 802: if (not defined $TeXsize) {$TeXsize="large";} 803: $currentstring .= '\strut\newline '.$pre.'{\\'.$TeXsize.' \textbf{'; 804: } 805: return $currentstring; 806: } 807: 808: sub end_h4 { 809: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_; 810: my $currentstring = ''; 811: if ($target eq 'web') { 812: $currentstring .= $token->[2]; 813: } elsif ($target eq 'tex') { 814: my $post='\vskip 0 mm '; 815: my $align=&Apache::lonxml::get_param('align',$parstack,$safeeval,undef,1); 816: if ($align eq 'center') { 817: $post='\end{center}'; 818: } elsif ($align eq 'left') { 819: $post='} \hfill'.'\vskip 0 mm '; 820: } elsif ($align eq 'right') { 821: $post='}'.'\vskip 0 mm '; 822: } 823: $currentstring .= '}}'.$post; 824: } 825: return $currentstring; 826: } 827: 828: #-- <h5> tag 829: sub start_h5 { 830: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_; 831: my $currentstring = &end_p(); # Close off any prior paras. 832: if ($target eq 'web') { 833: $currentstring .= $token->[4]; 834: } elsif ($target eq 'tex') { 835: my $pre; 836: my $align=&Apache::lonxml::get_param('align',$parstack,$safeeval,undef,1); 837: if ($align eq 'center') { 838: $pre='\begin{center}'; 839: } elsif ($align eq 'left') { 840: $pre='\rlap{'; 841: } elsif ($align eq 'right') { 842: $pre=' \hfill \llap{'; 843: } 844: my $TeXsize=&Apache::lonxml::get_param('TeXsize',$parstack,$safeeval,undef,0); 845: if (not defined $TeXsize) {$TeXsize="large";} 846: $currentstring .= '\strut\newline '.$pre.'{\\'.$TeXsize.' \textbf{'; 847: } 848: return $currentstring; 849: } 850: 851: sub end_h5 { 852: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_; 853: my $currentstring = ''; 854: if ($target eq 'web') { 855: $currentstring .= $token->[2]; 856: } elsif ($target eq 'tex') { 857: my $post='\vskip 0 mm '; 858: my $align=&Apache::lonxml::get_param('align',$parstack,$safeeval,undef,1); 859: if ($align eq 'center') { 860: $post='\end{center}'; 861: } elsif ($align eq 'left') { 862: $post='} \hfill'.'\vskip 0 mm '; 863: } elsif ($align eq 'right') { 864: $post='}'.'\vskip 0 mm '; 865: } 866: $currentstring .= '}}'.$post; 867: } 868: return $currentstring; 869: } 870: 871: #-- <h6> tag 872: sub start_h6 { 873: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_; 874: my $currentstring = &end_p(); # Close off any prior paras. 875: if ($target eq 'web') { 876: $currentstring .= $token->[4]; 877: } elsif ($target eq 'tex') { 878: my $pre; 879: my $align=&Apache::lonxml::get_param('align',$parstack,$safeeval,undef,1); 880: if ($align eq 'center') { 881: $pre='\begin{center}'; 882: } elsif ($align eq 'left') { 883: $pre='\rlap{'; 884: } elsif ($align eq 'right') { 885: $pre=' \hfill \llap{'; 886: } 887: my $TeXsize=&Apache::lonxml::get_param('TeXsize',$parstack,$safeeval,undef,0); 888: if (not defined $TeXsize) {$TeXsize="large";} 889: $currentstring .= '\strut\newline '.$pre.'{\\'.$TeXsize.' \textbf{'; 890: } 891: return $currentstring; 892: } 893: 894: sub end_h6 { 895: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_; 896: my $currentstring = ''; 897: if ($target eq 'web') { 898: $currentstring .= $token->[2]; 899: } elsif ($target eq 'tex') { 900: my $post='\vskip 0 mm '; 901: my $align=&Apache::lonxml::get_param('align',$parstack,$safeeval,undef,1); 902: if ($align eq 'center') { 903: $post='\end{center}'; 904: } elsif ($align eq 'left') { 905: $post='} \hfill'.'\vskip 0 mm '; 906: } elsif ($align eq 'right') { 907: $post='}'.'\vskip 0 mm '; 908: } 909: $currentstring .= '}}'.$post; 910: } 911: return $currentstring; 912: } 913: 914: #--- <cite> tag (end tag required) 915: sub start_cite { 916: my ($target,$token) = @_; 917: my $currentstring = ''; 918: if ($target eq 'web') { 919: $currentstring .= $token->[4]; 920: } elsif ($target eq 'tex') { 921: $currentstring .= '\textit{'; 922: } 923: return $currentstring; 924: } 925: 926: sub end_cite { 927: my ($target,$token) = @_; 928: my $currentstring = ''; 929: if ($target eq 'web') { 930: $currentstring .= $token->[2]; 931: } elsif ($target eq 'tex') { 932: $currentstring .= '}'; 933: } 934: return $currentstring; 935: } 936: 937: #-- <i> tag (end tag required) 938: sub start_i { 939: my ($target,$token) = @_; 940: my $currentstring = ''; 941: if ($target eq 'web') { 942: $currentstring .= $token->[4]; 943: } elsif ($target eq 'tex') { 944: $currentstring .= '\textit{'; 945: } 946: return $currentstring; 947: } 948: 949: sub end_i { 950: my ($target,$token) = @_; 951: my $currentstring = ''; 952: if ($target eq 'web') { 953: $currentstring .= $token->[2]; 954: } elsif ($target eq 'tex') { 955: $currentstring .= '}'; 956: } 957: return $currentstring; 958: } 959: 960: #-- <address> tag (end tag required) 961: sub start_address { 962: my ($target,$token) = @_; 963: my $currentstring = ''; 964: if ($target eq 'web') { 965: $currentstring .= $token->[4]; 966: } elsif ($target eq 'tex') { 967: $currentstring .= '\textit{'; 968: } 969: return $currentstring; 970: } 971: 972: sub end_address { 973: my ($target,$token) = @_; 974: my $currentstring = ''; 975: if ($target eq 'web') { 976: $currentstring .= $token->[2]; 977: } elsif ($target eq 'tex') { 978: $currentstring .= '}'; 979: } 980: return $currentstring; 981: } 982: 983: #-- <dfn> tag (end tag required) 984: sub start_dfn { 985: my ($target,$token) = @_; 986: my $currentstring = ''; 987: if ($target eq 'web') { 988: $currentstring .= $token->[4]; 989: } elsif ($target eq 'tex') { 990: $currentstring .= '\textit{'; 991: } 992: return $currentstring; 993: } 994: 995: sub end_dfn { 996: my ($target,$token) = @_; 997: my $currentstring = ''; 998: if ($target eq 'web') { 999: $currentstring .= $token->[2]; 1000: } elsif ($target eq 'tex') { 1001: $currentstring .= '}'; 1002: } 1003: return $currentstring; 1004: } 1005: 1006: #-- <tt> tag (end tag required) 1007: sub start_tt { 1008: my ($target,$token) = @_; 1009: my $currentstring = ''; 1010: if ($target eq 'web') { 1011: $currentstring .= $token->[4]; 1012: } elsif ($target eq 'tex') { 1013: $currentstring .= '\texttt{'; 1014: } 1015: return $currentstring; 1016: } 1017: 1018: sub end_tt { 1019: my ($target,$token) = @_; 1020: my $currentstring = ''; 1021: if ($target eq 'web') { 1022: $currentstring .= $token->[2]; 1023: } elsif ($target eq 'tex') { 1024: $currentstring .= '}'; 1025: } 1026: return $currentstring; 1027: } 1028: 1029: #-- <kbd> tag (end tag required) 1030: sub start_kbd { 1031: my ($target,$token) = @_; 1032: my $currentstring = ''; 1033: if ($target eq 'web') { 1034: $currentstring .= $token->[4]; 1035: } elsif ($target eq 'tex') { 1036: $currentstring .= '\texttt{'; 1037: } 1038: return $currentstring; 1039: } 1040: 1041: sub end_kbd { 1042: my ($target,$token) = @_; 1043: my $currentstring = ''; 1044: if ($target eq 'web') { 1045: $currentstring .= $token->[2]; 1046: } elsif ($target eq 'tex') { 1047: $currentstring .= '}'; 1048: } 1049: return $currentstring; 1050: } 1051: 1052: #-- <code> tag (end tag required) 1053: sub start_code { 1054: my ($target,$token) = @_; 1055: my $currentstring = ''; 1056: if ($target eq 'web') { 1057: $currentstring .= $token->[4]; 1058: } elsif ($target eq 'tex') { 1059: $currentstring .= '\texttt{'; 1060: } 1061: return $currentstring; 1062: } 1063: 1064: sub end_code { 1065: my ($target,$token) = @_; 1066: my $currentstring = ''; 1067: if ($target eq 'web') { 1068: $currentstring .= $token->[2]; 1069: } elsif ($target eq 'tex') { 1070: $currentstring .= '}'; 1071: } 1072: return $currentstring; 1073: } 1074: 1075: #-- <em> tag (end tag required) 1076: sub start_em { 1077: my ($target,$token) = @_; 1078: my $currentstring = ''; 1079: if ($target eq 'web') { 1080: $currentstring .= $token->[4]; 1081: } elsif ($target eq 'tex') { 1082: $currentstring .= '\emph{'; 1083: } 1084: return $currentstring; 1085: } 1086: 1087: sub end_em { 1088: my ($target,$token) = @_; 1089: my $currentstring = ''; 1090: if ($target eq 'web') { 1091: $currentstring .= $token->[2]; 1092: } elsif ($target eq 'tex') { 1093: $currentstring .= '}'; 1094: } 1095: return $currentstring; 1096: } 1097: 1098: #-- <q> tag (end tag required) 1099: sub start_q { 1100: my ($target,$token) = @_; 1101: my $currentstring = ''; 1102: if ($target eq 'web') { 1103: $currentstring .= $token->[4]; 1104: } elsif ($target eq 'tex') { 1105: $currentstring .= '\emph{'; 1106: } 1107: return $currentstring; 1108: } 1109: 1110: sub end_q { 1111: my ($target,$token) = @_; 1112: my $currentstring = ''; 1113: if ($target eq 'web') { 1114: $currentstring .= $token->[2]; 1115: } elsif ($target eq 'tex') { 1116: $currentstring .= '}'; 1117: } 1118: return $currentstring; 1119: } 1120: 1121: # <p> is a bit strange since it does not require a closing </p> 1122: # However in latex, we must often output closing stuff to end 1123: # environments and {}'s etc. Therefore we do all the work 1124: # of figuring out the ending strings in the start tag processing, 1125: # and provide a mechanism to output the stop text external 1126: # to tag processing. 1127: # 1128: { 1129: 1130: my $closing_string = ''; # String required to close <p> 1131: 1132: # Some tags are <p> fragile meaning that <p> inside of them 1133: # does not work within TeX mode. This is managed via the 1134: # counter below: 1135: # 1136: 1137: my $para_disabled = 0; 1138: 1139: sub disable_para { 1140: $para_disabled++; 1141: } 1142: sub enable_para { 1143: $para_disabled--; 1144: } 1145: 1146: 1147: #-- <p> tag (end tag optional) 1148: #optional attribute - align="center|left|right" 1149: sub start_p { 1150: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_; 1151: my $currentstring = ''; 1152: if ($target eq 'web') { 1153: $currentstring .= &end_p(); # close off prior para if in progress. 1154: $currentstring .= $token->[4]; 1155: if (! ($currentstring =~ /\//)) { 1156: $closing_string = '</p>'; # Deal correctly with <p /> e.g. 1157: } 1158: } elsif ($target eq 'tex' && !$para_disabled) { 1159: $currentstring .= &end_p(); # close off prior para if in progress. 1160: my $align=&Apache::lonxml::get_param('align',$parstack,$safeeval,undef,1); 1161: if ($align eq 'center') { 1162: $currentstring .='\begin{center}\par'; 1163: $closing_string = '\end{center}'; 1164: } elsif ($align eq 'right') { 1165: $currentstring.='\makebox['.$env{'form.textwidth'}.']{\hfill\llap{'; 1166: $closing_string= '}}'; 1167: } elsif ($align eq 'left') { 1168: $currentstring.='\noindent\makebox['.$env{'form.textwidth'}.']{\rlap{'; 1169: $closing_string = '}\hfill}'; 1170: } else { 1171: $currentstring.='\par '; 1172: $closing_string = '\strut\\\\\strut '; 1173: } 1174: 1175: } 1176: return $currentstring; 1177: } 1178: # 1179: # End paragraph processing just requires that we output the 1180: # closing string that was saved and blank it. 1181: sub end_p { 1182: # Note only 'tex' mode uses disable_para and enable_para 1183: # so we don't need to know the target in the check below: 1184: 1185: if (!$para_disabled) { 1186: my $current_string = $closing_string; 1187: $closing_string = ''; # Not in a para anymore. 1188: return $current_string; 1189: } else { 1190: return ''; 1191: } 1192: 1193: } 1194: } 1195: #-- <br> tag (end tag forbidden) 1196: sub start_br { 1197: my ($target,$token,$tagstack,$parstack,$parser,$safeeval)=@_; 1198: my $currentstring = ''; 1199: if ($target eq 'web') { 1200: $currentstring .= $token->[4]; 1201: } elsif ($target eq 'tex') { 1202: my @tempo=@$tagstack; 1203: my $signal=0; 1204: for (my $i=$#tempo;$i>=0;$i--) { 1205: if (($tempo[$i] eq 'b') || ($tempo[$i] eq 'strong') || 1206: ($tempo[$i] eq 'ol') || ($tempo[$i] eq 'ul') || 1207: ($tempo[$i] eq 'td') || ($tempo[$i] eq 'th')) { 1208: $signal=1; 1209: last; 1210: } 1211: } 1212: if ($signal) { 1213: $currentstring .= ' \vskip 0 mm '; 1214: } elsif ($$tagstack[-2] ne 'sub' && $$tagstack[-2] ne 'sup') { 1215: $currentstring .= '\strut \\\\ \strut '; 1216: } 1217: } 1218: return $currentstring; 1219: } 1220: 1221: sub end_br { 1222: my ($target,$token) = @_; 1223: my $currentstring = ''; 1224: if ($target eq 'web') { 1225: $currentstring .= $token->[2]; 1226: } 1227: return $currentstring; 1228: } 1229: 1230: #-- <big> tag (end tag required) 1231: sub start_big { 1232: my ($target,$token) = @_; 1233: my $currentstring = ''; 1234: if ($target eq 'web') { 1235: $currentstring .= $token->[4]; 1236: } elsif ($target eq 'tex') { 1237: $currentstring .= '{\large '; 1238: } 1239: return $currentstring; 1240: } 1241: 1242: sub end_big { 1243: my ($target,$token) = @_; 1244: my $currentstring = ''; 1245: if ($target eq 'web') { 1246: $currentstring .= $token->[2]; 1247: } elsif ($target eq 'tex') { 1248: $currentstring .= '}'; 1249: } 1250: return $currentstring; 1251: } 1252: 1253: #-- <small> tag (end tag required) 1254: sub start_small { 1255: my ($target,$token) = @_; 1256: my $currentstring = ''; 1257: if ($target eq 'web') { 1258: $currentstring .= $token->[4]; 1259: } elsif ($target eq 'tex') { 1260: $currentstring .= '{\footnotesize '; 1261: } 1262: return $currentstring; 1263: } 1264: 1265: sub end_small { 1266: my ($target,$token) = @_; 1267: my $currentstring = ''; 1268: if ($target eq 'web') { 1269: $currentstring .= $token->[2]; 1270: } elsif ($target eq 'tex') { 1271: $currentstring .= '}'; 1272: } 1273: return $currentstring; 1274: } 1275: 1276: #-- <basefont> tag (end tag forbidden) 1277: sub start_basefont { 1278: my ($target,$token,$tagstack,$parstack,$parser,$safeeval)=@_; 1279: my $currentstring = ''; 1280: if ($target eq 'web') { 1281: $currentstring = $token->[4]; 1282: } elsif ($target eq 'tex') { 1283: my $basesize=&Apache::lonxml::get_param('TeXsize',$parstack,$safeeval); 1284: if (defined $basesize) { 1285: $currentstring = '{\\'.$basesize.' '; 1286: } 1287: } 1288: return $currentstring; 1289: } 1290: 1291: sub end_basefont { 1292: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_; 1293: my $currentstring = ''; 1294: if ($target eq 'web') { 1295: $currentstring = $token->[4]; 1296: } elsif ($target eq 'tex') { 1297: my $basesize=&Apache::lonxml::get_param('TeXsize',$parstack,$safeeval); 1298: if (defined $basesize) { 1299: $currentstring = '}'; 1300: } 1301: } 1302: return $currentstring; 1303: } 1304: 1305: #-- <font> tag (end tag required) 1306: sub start_font { 1307: my ($target,$token,$tagstack,$parstack,$parser,$safeeval)=@_; 1308: my $currentstring = ''; 1309: if ($target eq 'web') { 1310: my $face=&Apache::lonxml::get_param('face',$parstack,$safeeval); 1311: if ($face!~/symbol/i) { 1312: if (($env{'browser.fontenhance'} eq 'on') || 1313: ($env{'browser.blackwhite'} eq 'on')) { return ''; } 1314: } 1315: $currentstring = $token->[4]; 1316: } elsif ($target eq 'tex') { 1317: my $fontsize=&Apache::lonxml::get_param('TeXsize',$parstack,$safeeval); 1318: if (defined $fontsize) { 1319: $currentstring = '{\\'.$fontsize.' '; 1320: } 1321: } 1322: return $currentstring; 1323: } 1324: 1325: sub end_font { 1326: my ($target,$token,$tagstack,$parstack,$parser,$safeeval)=@_; 1327: my $currentstring = ''; 1328: if ($target eq 'web') { 1329: $currentstring = $token->[2]; 1330: } elsif ($target eq 'tex') { 1331: my $fontsize=&Apache::lonxml::get_param('TeXsize',$parstack,$safeeval); 1332: if (defined $fontsize) { 1333: $currentstring = '}'; 1334: } 1335: } 1336: return $currentstring; 1337: } 1338: 1339: #-- <strike> tag (end tag required) 1340: sub start_strike { 1341: my ($target,$token) = @_; 1342: my $currentstring = ''; 1343: if ($target eq 'web') { 1344: $currentstring .= $token->[4]; 1345: } elsif ($target eq 'tex') { 1346: &Apache::lonxml::startredirection(); 1347: } 1348: return $currentstring; 1349: } 1350: 1351: sub end_strike { 1352: my ($target,$token) = @_; 1353: my $currentstring = ''; 1354: if ($target eq 'web') { 1355: $currentstring .= $token->[2]; 1356: } elsif ($target eq 'tex') { 1357: $currentstring=&Apache::lonxml::endredirection(); 1358: $currentstring=~s/(\S)(\s+)(\S)/$1\}$2\\underline\{$3/g; 1359: $currentstring=~s/^\s*(\S)/\\underline\{$1/; 1360: $currentstring=~s/(\S)\s*$/$1\}/; 1361: } 1362: return $currentstring; 1363: } 1364: 1365: #-- <s> tag (end tag required) 1366: sub start_s { 1367: my ($target,$token) = @_; 1368: my $currentstring = ''; 1369: if ($target eq 'web') { 1370: $currentstring .= $token->[4]; 1371: } elsif ($target eq 'tex') { 1372: &Apache::lonxml::startredirection(); 1373: } 1374: return $currentstring; 1375: } 1376: 1377: sub end_s { 1378: my ($target,$token) = @_; 1379: my $currentstring = ''; 1380: if ($target eq 'web') { 1381: $currentstring .= $token->[2]; 1382: } elsif ($target eq 'tex') { 1383: $currentstring=&Apache::lonxml::endredirection(); 1384: $currentstring=~s/(\S)(\s+)(\S)/$1\}$2\\underline\{$3/g; 1385: $currentstring=~s/^\s*(\S)/\\underline\{$1/; 1386: $currentstring=~s/(\S)\s*$/$1\}/; 1387: } 1388: return $currentstring; 1389: } 1390: 1391: #-- <sub> tag (end tag required) 1392: sub start_sub { 1393: my ($target,$token) = @_; 1394: my $currentstring = ''; 1395: if ($target eq 'web') { 1396: $currentstring .= $token->[4]; 1397: } elsif ($target eq 'tex') { 1398: $currentstring .= '\ensuremath{_{'; 1399: } 1400: return $currentstring; 1401: } 1402: 1403: sub end_sub { 1404: my ($target,$token) = @_; 1405: my $currentstring = ''; 1406: if ($target eq 'web') { 1407: $currentstring .= $token->[2]; 1408: } elsif ($target eq 'tex') { 1409: $currentstring .= '}}'; 1410: } 1411: return $currentstring; 1412: } 1413: 1414: #-- <sup> tag (end tag required) 1415: sub start_sup { 1416: my ($target,$token) = @_; 1417: my $currentstring = ''; 1418: if ($target eq 'web') { 1419: $currentstring .= $token->[4]; 1420: } elsif ($target eq 'tex') { 1421: $currentstring .= '\ensuremath{^{'; 1422: } 1423: return $currentstring; 1424: } 1425: 1426: sub end_sup { 1427: my ($target,$token) = @_; 1428: my $currentstring = ''; 1429: if ($target eq 'web') { 1430: $currentstring .= $token->[2]; 1431: } elsif ($target eq 'tex') { 1432: $currentstring .= '}}'; 1433: } 1434: return $currentstring; 1435: } 1436: 1437: #-- <hr> tag (end tag forbidden) 1438: sub start_hr { 1439: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_; 1440: my $currentstring = &end_p(); # End enclosing para. 1441: if ($target eq 'web') { 1442: $currentstring .= $token->[4]; 1443: } elsif ($target eq 'tex') { 1444: my $LaTeXwidth = &Apache::lonxml::get_param('TeXwidth',$parstack,$safeeval,undef,0); 1445: if (defined $LaTeXwidth) { 1446: if ($LaTeXwidth=~/^%/) { 1447: substr($LaTeXwidth,0,1)=''; 1448: $LaTeXwidth=($LaTeXwidth/100).'\textwidth'; 1449: } 1450: } else { 1451: $LaTeXwidth ='0.9\textwidth'; 1452: } 1453: my ($pre,$post); 1454: my $align=&Apache::lonxml::get_param('align',$parstack,$safeeval,undef,1); 1455: if (($align eq 'center') || (not defined $align)) { 1456: $pre=''; $post=''; 1457: } elsif ($align eq 'left') { 1458: $pre='\rlap{'; $post='} \hfill'; 1459: } elsif ($align eq 'right') { 1460: $pre=' \hfill \llap{'; $post='}'; 1461: } 1462: $currentstring .= ' \vskip 0 mm \noindent\makebox['.$LaTeXwidth.']{'.$pre.'\makebox['. 1463: $LaTeXwidth.'][b]{\hrulefill}'.$post.'}\vskip 0 mm '; 1464: } 1465: return $currentstring; 1466: } 1467: 1468: sub end_hr { 1469: my ($target,$token) = @_; 1470: my $currentstring = ''; 1471: if ($target eq 'web') { 1472: $currentstring .= $token->[2]; 1473: } 1474: return $currentstring; 1475: } 1476: 1477: #-- <div> tag (end tag required) 1478: { 1479: 1480: # Since div can be nested, the stack below is used 1481: # in 'tex' mode to store the ending strings 1482: # for the div stack. 1483: 1484: my @div_end_stack; 1485: 1486: sub start_div { 1487: my ($target,$token, $tagstack, $parstack, $parser, $safeeval) = @_; 1488: my $currentstring = &end_p(); # Close enclosing para. 1489: if ($target eq 'web') { 1490: $currentstring .= $token->[4]; 1491: } 1492: if ($target eq 'tex') { 1493: # 4 possible alignments: left, right, center, and -missing-. 1494: 1495: my $endstring = ''; 1496: 1497: my $align = lc(&Apache::lonxml::get_param('align', $parstack, 1498: $safeeval, undef, 1)); 1499: if ($align eq 'center') { 1500: $currentstring .= '\begin{center}'; 1501: $endstring = '\end{center}'; 1502: } 1503: elsif ($align eq 'right') { 1504: $currentstring .= '\begin{flushright}'; 1505: $endstring .= '\end{flushright}'; 1506: } elsif ($align eq 'left') { 1507: $currentstring .= '\begin{flushleft}'; 1508: $endstring = '\end{flushleft}'; 1509: } else { 1510: 1511: } 1512: $currentstring .= "\n"; # For human readability. 1513: $endstring = "\n$endstring\n"; # For human readability 1514: push(@div_end_stack, $endstring); 1515: } 1516: return $currentstring; 1517: } 1518: 1519: sub end_div { 1520: my ($target,$token) = @_; 1521: my $currentstring = ''; 1522: if ($target eq 'web') { 1523: $currentstring .= $token->[2]; 1524: } 1525: if ($target eq 'tex') { 1526: my $endstring = pop @div_end_stack; 1527: $currentstring .= $endstring; 1528: } 1529: return $currentstring; 1530: } 1531: } 1532: 1533: #-- <a> tag (end tag required) 1534: sub start_a { 1535: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_; 1536: my $currentstring = ''; 1537: if ($target eq 'web') { 1538: my $href=&Apache::lonxml::get_param('href',$parstack,$safeeval, 1539: undef,1); 1540: $currentstring=&Apache::lonenc::encrypt_ref($token,{'href'=>$href}); 1541: } elsif ($target eq 'tex') { 1542: my $a=&Apache::lonxml::get_param('href',$parstack,$safeeval,undef,1); 1543: my $b=&Apache::lonxml::get_param('name',$parstack,$safeeval,undef,1); 1544: if ($a=~/\S/) { 1545: $a=~s/([^\\])%/$1\\\%/g; 1546: $currentstring .= '\ref{URI: '.$a.'}'; 1547: } elsif ($b=~/\S/) { 1548: $currentstring .= '\ref{Anchor: '.$b.'}'; 1549: } else { 1550: $currentstring.=''; 1551: } 1552: } 1553: return $currentstring; 1554: } 1555: 1556: sub end_a { 1557: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_; 1558: my $currentstring = ''; 1559: if ($target eq 'web') { 1560: $currentstring .= $token->[2]; 1561: } 1562: return $currentstring; 1563: } 1564: 1565: #-- <li> tag (end tag optional) 1566: sub start_li { 1567: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_; 1568: my $currentstring = ''; 1569: if ($target eq 'web') { 1570: $currentstring = $token->[4]; 1571: } elsif ($target eq 'tex') { 1572: my $type=&Apache::lonxml::get_param('type',$parstack,$safeeval,undef,0); 1573: my $value=&Apache::lonxml::get_param('value',$parstack,$safeeval,undef,0); 1574: #FIXME need to support types i and I 1575: if ($type=~/disc/) { 1576: $currentstring .= ' \item[$\bullet$] '; 1577: } elsif ($type=~/circle/) { 1578: $currentstring .= ' \item[$\circ$] '; 1579: } elsif ($type=~/square/) { 1580: $currentstring .= ' \item[$\diamond$] '; 1581: } elsif ($type eq '1') { 1582: $currentstring .= ' \item['.($Apache::londefdef::list_index+1).'.]'; 1583: } elsif ($type eq 'A') { 1584: $currentstring .= ' \item['.('A'..'Z')[$Apache::londefdef::list_index].'.]'; 1585: } elsif ($type eq 'a') { 1586: $currentstring .= ' \item['.('a'..'z')[$Apache::londefdef::list_index].'.]'; 1587: } elsif ($value ne '') { 1588: $currentstring .= ' \item['.$value.'] '; 1589: } else { 1590: $currentstring .= ' \item '; 1591: } 1592: $Apache::londefdef::list_index++; 1593: } 1594: return $currentstring; 1595: } 1596: 1597: sub end_li { 1598: my ($target,$token) = @_; 1599: my $currentstring = &end_p(); # In case there's a <p> in the <li> 1600: if ($target eq 'web') { 1601: $currentstring .= $token->[2]; 1602: } 1603: return $currentstring; 1604: } 1605: 1606: #-- <u> tag (end tag required) 1607: sub start_u { 1608: my ($target,$token) = @_; 1609: my $currentstring = ''; 1610: if ($target eq 'web') { 1611: $currentstring .= $token->[4]; 1612: } elsif ($target eq 'tex') { 1613: &Apache::lonxml::startredirection(); 1614: } 1615: return $currentstring; 1616: } 1617: 1618: sub end_u { 1619: my ($target,$token) = @_; 1620: my $currentstring = ''; 1621: if ($target eq 'web') { 1622: $currentstring .= $token->[2]; 1623: } elsif ($target eq 'tex') { 1624: $currentstring=&Apache::lonxml::endredirection(); 1625: $currentstring=~s/(\S)(\s+)(\S)/$1\}$2\\underline\{$3/g; 1626: $currentstring=~s/^\s*(\S)/\\underline\{$1/; 1627: $currentstring=~s/(\S)\s*$/$1\}/; 1628: } 1629: return $currentstring; 1630: } 1631: 1632: #-- <ul> tag (end tag required) 1633: sub start_ul { 1634: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_; 1635: my $currentstring = &end_p(); # Close off enclosing list. 1636: if ($target eq 'web') { 1637: $currentstring .= $token->[4]; 1638: } elsif ($target eq 'tex') { 1639: my $TeXtype=&Apache::lonxml::get_param('type',$parstack,$safeeval,undef,0); 1640: $Apache::londefdef::list_index=0; 1641: if ($TeXtype eq 'disc') { 1642: $currentstring .= '\renewcommand{\labelitemi}{$\bullet$}'. 1643: '\renewcommand{\labelitemii}{$\bullet$}'. 1644: '\renewcommand{\labelitemiii}{$\bullet$}'. 1645: '\renewcommand{\labelitemiv}{$\bullet$}'; 1646: } elsif ($TeXtype eq 'circle') { 1647: $currentstring .= '\renewcommand{\labelitemi}{$\circ$}'. 1648: '\renewcommand{\labelitemii}{$\circ$}'. 1649: '\renewcommand{\labelitemiii}{$\circ$}'. 1650: '\renewcommand{\labelitemiv}{$\circ$}'; 1651: } elsif ($TeXtype eq 'square') { 1652: $currentstring .= '\renewcommand{\labelitemi}{$\diamond$}'. 1653: '\renewcommand{\labelitemii}{$\diamond$}'. 1654: '\renewcommand{\labelitemiii}{$\diamond$}'. 1655: '\renewcommand{\labelitemiv}{$\diamond$}'; 1656: } 1657: $currentstring .= '\strut \begin{itemize}'; 1658: } 1659: return $currentstring; 1660: } 1661: 1662: sub end_ul { 1663: my ($target,$token) = @_; 1664: my $currentstring = ''; 1665: if ($target eq 'web') { 1666: $currentstring = $token->[2]; 1667: } elsif ($target eq 'tex') { 1668: $currentstring = '\end{itemize} \renewcommand{\labelitemi}{$\bullet$}'. 1669: '\renewcommand{\labelitemii}{$\bullet$}'. 1670: '\renewcommand{\labelitemiii}{$\bullet$}'. 1671: '\renewcommand{\labelitemiv}{$\bullet$}\strut '; 1672: } 1673: return $currentstring; 1674: } 1675: 1676: #-- <menu> tag (end tag required) 1677: sub start_menu { 1678: my ($target,$token) = @_; 1679: my $currentstring = ''; 1680: if ($target eq 'web') { 1681: $currentstring = $token->[4]; 1682: } elsif ($target eq 'tex') { 1683: $currentstring = " \\begin{itemize} "; 1684: } 1685: return $currentstring; 1686: } 1687: 1688: sub end_menu { 1689: my ($target,$token) = @_; 1690: my $currentstring = ''; 1691: if ($target eq 'web') { 1692: $currentstring = $token->[2]; 1693: } elsif ($target eq 'tex') { 1694: $currentstring = " \\end{itemize}"; 1695: } 1696: return $currentstring; 1697: } 1698: 1699: #-- <dir> tag (end tag required) 1700: sub start_dir { 1701: my ($target,$token) = @_; 1702: my $currentstring = &end_p(); # In case there's a <p> prior to the list. 1703: if ($target eq 'web') { 1704: $currentstring .= $token->[4]; 1705: } elsif ($target eq 'tex') { 1706: $currentstring .= " \\begin{itemize} "; 1707: } 1708: return $currentstring; 1709: } 1710: 1711: sub end_dir { 1712: my ($target,$token) = @_; 1713: my $currentstring = ''; 1714: if ($target eq 'web') { 1715: $currentstring = $token->[2]; 1716: } elsif ($target eq 'tex') { 1717: $currentstring = " \\end{itemize}"; 1718: } 1719: return $currentstring; 1720: } 1721: 1722: #-- <ol> tag (end tag required) 1723: sub start_ol { 1724: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_; 1725: my $currentstring = &end_p(); # In case there's a <p> prior to the list. 1726: if ($target eq 'web') { 1727: $currentstring .= $token->[4]; 1728: } elsif ($target eq 'tex') { 1729: $Apache::londefdef::list_index=0; 1730: my $type=&Apache::lonxml::get_param('type',$parstack,$safeeval,undef,0); 1731: if ($type eq '1') { 1732: $currentstring .= '\renewcommand{\labelenumi}{\arabic{enumi}.}'. 1733: '\renewcommand{\labelenumii}{\arabic{enumii}.}'. 1734: '\renewcommand{\labelenumiii}{\arabic{enumiii}.}'. 1735: '\renewcommand{\labelenumiv}{\arabic{enumiv}.}'; 1736: } elsif ($type eq 'A') { 1737: $currentstring .= '\renewcommand{\labelenumi}{\Alph{enumi}.}'. 1738: '\renewcommand{\labelenumii}{\Alph{enumii}.}'. 1739: '\renewcommand{\labelenumiii}{\Alph{enumiii}.}'. 1740: '\renewcommand{\labelenumiv}{\Alph{enumiv}.}'; 1741: } elsif ($type eq 'a') { 1742: $currentstring .= '\renewcommand{\labelenumi}{\alph{enumi}.}'. 1743: '\renewcommand{\labelenumii}{\alph{enumii}.}'. 1744: '\renewcommand{\labelenumiii}{\alph{enumiii}.}'. 1745: '\renewcommand{\labelenumiv}{\alph{enumiv}.}'; 1746: } elsif ($type eq 'i') { 1747: $currentstring .= '\renewcommand{\labelenumi}{\roman{enumi}.}'. 1748: '\renewcommand{\labelenumii}{\roman{enumii}.}'. 1749: '\renewcommand{\labelenumiii}{\roman{enumiii}.}'. 1750: '\renewcommand{\labelenumiv}{\roman{enumiv}.}'; 1751: } elsif ($type eq 'I') { 1752: $currentstring .= '\renewcommand{\labelenumi}{\Roman{enumi}.}'. 1753: '\renewcommand{\labelenumii}{\Roman{enumii}.}'. 1754: '\renewcommand{\labelenumiii}{\Roman{enumiii}.}'. 1755: '\renewcommand{\labelenumiv}{\Roman{enumiv}.}'; 1756: } 1757: $currentstring .= '\strut \begin{enumerate}'; 1758: } 1759: return $currentstring; 1760: } 1761: 1762: sub end_ol { 1763: my ($target,$token) = @_; 1764: my $currentstring = ''; 1765: if ($target eq 'web') { 1766: $currentstring = $token->[2]; 1767: } elsif ($target eq 'tex') { 1768: $currentstring = '\end{enumerate}\renewcommand{\labelenumi}{\arabic{enumi}.}'. 1769: '\renewcommand{\labelenumii}{\arabic{enumii}.}'. 1770: '\renewcommand{\labelenumiii}{\arabic{enumiii}.}'. 1771: '\renewcommand{\labelenumiv}{\arabic{enumiv}.}\strut '; 1772: } 1773: return $currentstring; 1774: } 1775: 1776: #-- <dl> tag (end tag required) 1777: sub start_dl { 1778: my ($target,$token) = @_; 1779: my $currentstring = &end_p(); # In case there's a <p> unclosed prior to the list. 1780: if ($target eq 'web') { 1781: $currentstring .= $token->[4]; 1782: } elsif ($target eq 'tex') { 1783: $currentstring .= '\begin{description}'; 1784: $Apache::londefdef::DL++; 1785: push(@Apache::londefdef::description,[]); 1786: $Apache::londefdef::DD[$Apache::londefdef::DL]=0; 1787: $Apache::londefdef::DT[$Apache::londefdef::DL]=0; 1788: $Apache::londefdef::seenDT[$Apache::londefdef::DL]=0; 1789: } 1790: return $currentstring; 1791: } 1792: 1793: sub end_dl { 1794: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_; 1795: my $currentstring = ''; 1796: if ($target eq 'web') { 1797: $currentstring = $token->[2]; 1798: } elsif ($target eq 'tex') { 1799: if ($Apache::londefdef::DT[-1]) { &end_dt(@_); } 1800: if ($Apache::londefdef::DD[-1]) { &end_dd(@_); } 1801: foreach my $element (@{$Apache::londefdef::description[-1]}) { 1802: $currentstring.=' '.$element.' '; 1803: } 1804: pop(@Apache::londefdef::description); 1805: $currentstring.='\end{description}'; 1806: delete($Apache::londefdef::DD[$Apache::londefdef::DL]); 1807: delete($Apache::londefdef::DT[$Apache::londefdef::DL]); 1808: delete($Apache::londefdef::seenDT[$Apache::londefdef::DL]); 1809: $Apache::londefdef::DL--; 1810: } 1811: return $currentstring; 1812: } 1813: 1814: #-- <dt> tag (end tag optional) 1815: sub start_dt { 1816: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_; 1817: my $currentstring=''; 1818: if ($target eq 'web') { 1819: $currentstring = $token->[4]; 1820: } elsif ($target eq 'tex') { 1821: if ($Apache::londefdef::DT[-1]) { &end_dt(@_); } 1822: if ($Apache::londefdef::DD[-1]) { &end_dd(@_); } 1823: &Apache::lonxml::startredirection(); 1824: $Apache::londefdef::DT[-1]++; 1825: $Apache::londefdef::seenDT[-1]=1; 1826: } 1827: return $currentstring; 1828: } 1829: 1830: sub end_dt { 1831: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_; 1832: my $currentstring = ''; 1833: if ($target eq 'web') { 1834: $currentstring = $token->[2]; 1835: } elsif ($target eq 'tex') { 1836: if ($Apache::londefdef::DT[-1]) { 1837: my $data=&item_cleanup(); 1838: push(@{$Apache::londefdef::description[-1]},'\item['.$data.'] \strut \vskip 0mm'); 1839: $Apache::londefdef::DT[-1]--; 1840: } 1841: } 1842: return $currentstring; 1843: } 1844: 1845: sub item_cleanup { 1846: my $item=&Apache::lonxml::endredirection(); 1847: $item=~s/\\begin{center}//g; 1848: $item=~s/\\end{center}//g; 1849: return $item; 1850: } 1851: 1852: #-- <dd> tag (end tag optional) 1853: sub start_dd { 1854: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_; 1855: my $currentstring = ''; 1856: if ($target eq 'web') { 1857: $currentstring = $token->[4]; 1858: } elsif ($target eq 'tex') { 1859: if ($Apache::londefdef::DT[-1]) { &end_dt(@_); } 1860: if ($Apache::londefdef::DD[-1]) { &end_dd(@_);} 1861: if (!$Apache::londefdef::seenDT[-1]) { 1862: push(@{$Apache::londefdef::description[-1]},'\item[\strut] \strut \vskip 0mm '); 1863: } 1864: push(@{$Apache::londefdef::description[-1]},''); 1865: $Apache::londefdef::description[-1]->[-1].=' \strut '; 1866: $Apache::londefdef::DD[-1]++; 1867: &Apache::lonxml::startredirection(); 1868: } 1869: return $currentstring; 1870: } 1871: 1872: sub end_dd { 1873: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_; 1874: my $currentstring = ''; 1875: if ($target eq 'web') { 1876: $currentstring = $token->[2]; 1877: } elsif ($target eq 'tex') { 1878: $Apache::londefdef::description[-1]->[-1].= 1879: &Apache::lonxml::endredirection().' \vskip 0mm '; 1880: $Apache::londefdef::DD[-1]--; 1881: } 1882: return $currentstring; 1883: } 1884: 1885: #-- <table> tag (end tag required) 1886: # <table> also ends any prior <p> that is not closed. 1887: # but, unless I allow <p>'s to nest, that's the 1888: # only way I could think of to allow <p> in 1889: # <tr> <th> bodies 1890: # 1891: #list of supported attributes: border,width,TeXwidth 1892: sub start_table { 1893: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_; 1894: my $textwidth = ''; 1895: my $currentstring = &end_p(); 1896: if ($target eq 'web') { 1897: $currentstring .= $token->[4]; 1898: } elsif ($target eq 'tex') { 1899: my $aa = {}; 1900: push @Apache::londefdef::table, $aa; 1901: $Apache::londefdef::table[-1]{'row_number'} = -1; 1902: #maximum table's width (default coincides with text line length) 1903: if ($#Apache::londefdef::table==0) { 1904: $textwidth=&recalc($env{'form.textwidth'}); #result is always in mm 1905: $textwidth=~/(\d+\.?\d*)/; 1906: $textwidth=0.95*$1; #accounts "internal" LaTeX space for table frame 1907: } else { 1908: if ($Apache::londefdef::table[-2]{'TeXlen'}[$Apache::londefdef::table[-2]{'row_number'}][$Apache::londefdef::table[-2]{'counter_columns'}]=~/\d/) { 1909: #the maximum width of nested table is determined by LATeX width of parent cell 1910: $textwidth=$Apache::londefdef::table[-2]{'TeXlen'}[$Apache::londefdef::table[-2]{'row_number'}][$Apache::londefdef::table[-2]{'counter_columns'}]; 1911: } else { 1912: #try to use all space not used before (minus 5% for LaTeX table internal) - rather silly 1913: $textwidth=$Apache::londefdef::table[-2]{'width'}; 1914: for (my $i=0;$i<$Apache::londefdef::table[-2]{'counter_columns'};$i++) { 1915: $textwidth=$textwidth-$Apache::londefdef::table[-2]{'TeXlen'}[0][$i]; 1916: } 1917: } 1918: } 1919: my $TeXwidth = &Apache::lonxml::get_param('TeXwidth',$parstack,$safeeval,undef,0); 1920: if (not defined $TeXwidth) { 1921: my $htmlwidth = &Apache::lonxml::get_param('width',$parstack,$safeeval,undef,1); 1922: if ($htmlwidth=~/%/) { 1923: $Apache::londefdef::table[-1]{'percent'}=1; 1924: $htmlwidth=~/(\d+)/; 1925: $Apache::londefdef::table[-1]{'width'}=$1*$textwidth/100;; 1926: } else { 1927: $Apache::londefdef::table[-1]{'width'}=$textwidth; 1928: } 1929: } elsif ($TeXwidth=~/%/) { 1930: $Apache::londefdef::table[-1]{'percent'}=1; 1931: $TeXwidth=~/(\d+)/; 1932: $Apache::londefdef::table[-1]{'width'}=$1*$textwidth/100; 1933: } else { 1934: $Apache::londefdef::table[-1]{'forcetablewidth'}=1; 1935: $Apache::londefdef::table[-1]{'width'}=$TeXwidth; 1936: } 1937: #table's border 1938: my $border = &Apache::lonxml::get_param('border',$parstack,$safeeval); 1939: my $permission=&Apache::lonxml::get_param('TeXDropEmptyColumns',$parstack,$safeeval,undef,0); 1940: unless (defined $border) { $border = 0; } 1941: if ($border) { 1942: $Apache::londefdef::table[-1]{'hinc'} = '\hline '; 1943: $Apache::londefdef::table[-1]{'vinc'} = '&'; 1944: $Apache::londefdef::table[-1]{'vvinc'} = '|'; 1945: } else { 1946: $Apache::londefdef::table[-1]{'hinc'} = ''; 1947: $Apache::londefdef::table[-1]{'vinc'} = '&'; 1948: $Apache::londefdef::table[-1]{'vvinc'} = ''; 1949: } 1950: if ($#Apache::londefdef::table==0) { 1951: # Note that \newline seems to destroy the alignment envs. 1952: # $Apache::londefdef::table[-1]{'output'}='\strut\newline\strut\setlength{\tabcolsep}{1 mm}'; 1953: $Apache::londefdef::table[-1]{'output'}='\strut'.'\\\\'."\n".'\strut\setlength{\tabcolsep}{1 mm}'; 1954: } 1955: $Apache::londefdef::table[-1]{'output'}.=' \noindent \begin{tabular} '; 1956: $Apache::londefdef::table[-1]{'TeXlen'}=[]; 1957: $Apache::londefdef::table[-1]{'objectlen'}=[]; 1958: $Apache::londefdef::table[-1]{'objectsignal'}=[]; 1959: $Apache::londefdef::table[-1]{'maxlen'}=[]; 1960: $Apache::londefdef::table[-1]{'minlen'}=[]; 1961: $Apache::londefdef::table[-1]{'content'}=[]; 1962: $Apache::londefdef::table[-1]{'align'}=[]; 1963: $currentstring.='\keephidden{NEW TABLE ENTRY}'; 1964: } 1965: return $currentstring; 1966: } 1967: 1968: sub end_table { 1969: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_; 1970: my $currentstring = ''; 1971: if ($target eq 'web') { 1972: $currentstring = $token->[2]; 1973: } elsif ($target eq 'tex') { 1974: my $inmemory = ''; 1975: my $output = ''; 1976: my $WARNING=''; 1977: #width of columns from TeXwidth attributes 1978: for (my $in=0;$in<=$Apache::londefdef::table[-1]{'row_number'};$in++) { 1979: for (my $jn=0;$jn<=$Apache::londefdef::table[-1]{'counter_columns'};$jn++) { 1980: if ($Apache::londefdef::table[-1]{'TeXlen'}[0][$jn]<$Apache::londefdef::table[-1]{'TeXlen'}[$in][$jn]) { 1981: $Apache::londefdef::table[-1]{'TeXlen'}[0][$jn]=$Apache::londefdef::table[-1]{'TeXlen'}[$in][$jn]; 1982: } 1983: } 1984: } 1985: #free space and number of empty columns 1986: my ($available_space,$empty_columns)=($Apache::londefdef::table[-1]{'width'},0); 1987: if ($#Apache::londefdef::table ne 0) {$available_space=0.9*$available_space;} 1988: for (my $jn=0;$jn<=$Apache::londefdef::table[-1]{'counter_columns'};$jn++) { 1989: if ($Apache::londefdef::table[-1]{'TeXlen'}[0][$jn]==0) { 1990: $empty_columns++; 1991: } else { 1992: $available_space=$available_space-$Apache::londefdef::table[-1]{'TeXlen'}[0][$jn]; 1993: } 1994: } 1995: #boundaries for contents columns 1996: my @min_len=();#columns can not be narrower 1997: my @max_len=();#maximum length of column 1998: for (my $jn=0;$jn<=$Apache::londefdef::table[-1]{'counter_columns'};$jn++) { 1999: my ($localmin,$localmax)=(0,0); 2000: for (my $in=0;$in<=$Apache::londefdef::table[-1]{'row_number'};$in++) { 2001: if ($localmin<$Apache::londefdef::table[-1]{'minlen'}[$in][$jn]) { 2002: $localmin=$Apache::londefdef::table[-1]{'minlen'}[$in][$jn]; 2003: } 2004: if ($localmax<$Apache::londefdef::table[-1]{'maxlen'}[$in][$jn]) { 2005: $localmax=$Apache::londefdef::table[-1]{'maxlen'}[$in][$jn]; 2006: } 2007: } 2008: push @min_len, $localmin; 2009: push @max_len, $localmax; 2010: } 2011: for (my $jn=0;$jn<=$Apache::londefdef::table[-1]{'counter_columns'};$jn++) { 2012: my $localmin=0,; 2013: for (my $in=0;$in<=$Apache::londefdef::table[-1]{'row_number'};$in++) { 2014: if ($localmin<$Apache::londefdef::table[-1]{'objectlen'}[$in][$jn]) { 2015: $localmin=$Apache::londefdef::table[-1]{'objectlen'}[$in][$jn]; 2016: } 2017: } 2018: if ($max_len[$jn]<$localmin) { 2019: $max_len[$jn]=$localmin; 2020: $Apache::londefdef::table[-1]{'objectsignal'}[$jn]=1; 2021: }#object size is bigger 2022: if ($min_len[$jn]<$localmin) { 2023: $min_len[$jn]=$localmin; 2024: $Apache::londefdef::table[-1]{'objectsignal'}[$jn]=1; 2025: }#object size is bigger 2026: if ($Apache::londefdef::table[-1]{'TeXlen'}[0][$jn]!=0) { 2027: $min_len[$jn]=0; 2028: $max_len[$jn]=0; 2029: } 2030: } 2031: #final adjustment of column width 2032: my @fwidth=@{$Apache::londefdef::table[-1]{'TeXlen'}[0]};#final width array 2033: my @adjust=(); 2034: #step 1. adjustment by maximum value 2035: my $space_neeeded=0; 2036: for (my $jn=0;$jn<=$#max_len;$jn++) { 2037: $space_neeeded=$space_neeeded+$max_len[$jn]; 2038: } 2039: if ($space_neeeded<=$available_space) { 2040: for (my $jn=0;$jn<=$#max_len;$jn++) { 2041: if ($fwidth[$jn]==0) { 2042: $fwidth[$jn]=$max_len[$jn]; 2043: } 2044: } 2045: } else { 2046: #step 2. adjustment by minimum value (estimation) 2047: $space_neeeded=0; 2048: for (my $jn=0;$jn<=$#min_len;$jn++) { 2049: $space_neeeded+=$min_len[$jn]; 2050: } 2051: if ($space_neeeded>$available_space) { 2052: $WARNING=' \textbf{NOT ENOUGH SPACE FOR TABLE} '; 2053: for (my $jn=0;$jn<=$#max_len;$jn++) { 2054: if ($fwidth[$jn]==0) { 2055: $fwidth[$jn]=$min_len[$jn]; 2056: } 2057: } 2058: #check if we have objects which can be scaled 2059: my $how_many_to_scale=0; 2060: my @to_scale=(); 2061: for (my $jn=0;$jn<=$#max_len;$jn++) { 2062: if ($Apache::londefdef::table[-1]{'objectsignal'}[$jn] eq '1') { 2063: $how_many_to_scale++; 2064: push @to_scale, $jn; 2065: } 2066: } 2067: if ($how_many_to_scale>0) { 2068: my $space_to_adjust=($space_neeeded-$available_space)/$how_many_to_scale; 2069: foreach my $jn (@to_scale) { 2070: for (my $in=0;$in<=$Apache::londefdef::table[-1]{'row_number'};$in++) { 2071: $Apache::londefdef::table[-1]{'content'}[$in][$jn]=~m/width\s*=\s*(\d+\.?\d*\s*(mm|cm|in|pc|pt)*)/; 2072: if ($1 ne '') { 2073: my $current_length=&recalc($1); 2074: $current_length=~/(\d+\.?\d*)/; 2075: $current_length=$current_length-$space_to_adjust; 2076: $Apache::londefdef::table[-1]{'content'}[$in][$jn]=~s/width\s*=\s*(\d+\.?\d*\s*(mm|cm|in|pc|pt)*)/width=$current_length mm/; 2077: } 2078: $Apache::londefdef::table[-1]{'content'}[$in][$jn]=~m/\[(\d+\.?\d*)\s*mm\]/; 2079: if ($1 ne '') { 2080: my $current_length=$1; 2081: $current_length=$current_length-$space_to_adjust; 2082: $Apache::londefdef::table[-1]{'content'}[$in][$jn]=~s/\[(\d+\.?\d*)\s*mm\]/\[$current_length mm\]/; 2083: } 2084: } 2085: $fwidth[$jn]=$fwidth[$jn]-$space_to_adjust; 2086: } 2087: } 2088: } else { 2089: #step 3. adjustment over minimal + corrections 2090: my $enlarge_coef=$available_space/$space_neeeded; 2091: my $acsessive=0; 2092: for (my $jn=0;$jn<=$#min_len;$jn++) { 2093: $adjust[$jn]=$min_len[$jn]*$enlarge_coef; 2094: if ($adjust[$jn]>$max_len[$jn]) { 2095: $fwidth[$jn]=$max_len[$jn]; 2096: $acsessive=$acsessive+$adjust[$jn]-$max_len[$jn]; 2097: $adjust[$jn]=0; 2098: } 2099: } 2100: if ($acsessive>0) { 2101: #we have an excess of space and can redistribute it 2102: my $notempty_columns=0; 2103: for (my $jn=0;$jn<=$#min_len;$jn++) { 2104: if ($adjust[$jn]!=0) { 2105: $notempty_columns++; 2106: } 2107: } 2108: my $per_column=$acsessive/$notempty_columns; 2109: for (my $jn=0;$jn<=$#min_len;$jn++) { 2110: if ($adjust[$jn]!=0) { 2111: $adjust[$jn]+=$per_column; 2112: $fwidth[$jn]=$adjust[$jn]; 2113: } 2114: } 2115: } else { 2116: for (my $jn=0;$jn<=$#min_len;$jn++) { 2117: $fwidth[$jn]=$adjust[$jn]; 2118: } 2119: } 2120: } 2121: } 2122: #use all available width if it is defined in % or as TeXwidth 2123: if (($Apache::londefdef::table[-1]{'percent'}==1) || ($Apache::londefdef::table[-1]{'forcetablewidth'}==1)) { 2124: my $current=0; 2125: for (my $i=0;$i<=$#fwidth;$i++) { 2126: $current+=$fwidth[$i]; 2127: } 2128: my $coef=$Apache::londefdef::table[-1]{'width'}/$current; 2129: for (my $i=0;$i<=$#fwidth;$i++) { 2130: $fwidth[$i]*=$coef; 2131: } 2132: } 2133: #removing of empty columns if allowed 2134: my $permission=&Apache::lonxml::get_param('TeXDropEmptyColumns',$parstack,$safeeval,undef,0); 2135: if ($permission eq 'yes') { 2136: my @cleaned_table=(); 2137: my @cleaned_header=(); 2138: my $colind=0; 2139: for (my $jn=0;$jn<=$Apache::londefdef::table[-1]{'counter_columns'};$jn++) { 2140: if ($fwidth[$jn]!=0) { 2141: #we need to copy column 2142: for (my $in=0;$in<=$Apache::londefdef::table[-1]{'row_number'};$in++) { 2143: $cleaned_table[$in][$colind]=$Apache::londefdef::table[-1]{'content'}[$in][$jn]; 2144: $cleaned_header[$colind]=$fwidth[$jn]; 2145: } 2146: $colind++; 2147: } 2148: } 2149: $Apache::londefdef::table[-1]{'content'}=\@cleaned_table; 2150: @fwidth=@cleaned_header; 2151: } 2152: #construct header of the table 2153: my $header_of_table = '{'.$Apache::londefdef::table[-1]{'vvinc'}; 2154: for (my $in=0;$in<=$#fwidth;$in++) { 2155: $header_of_table.='p{'.$fwidth[$in].' mm}'.$Apache::londefdef::table[-1]{'vvinc'}; 2156: } 2157: $header_of_table .= '}'; 2158: #fill the table 2159: for (my $in=0;$in<=$Apache::londefdef::table[-1]{'row_number'};$in++) { 2160: for (my $jn=0;$jn<=$#fwidth;$jn++) { 2161: if ($Apache::londefdef::table[-1]{'align'}[$in][$jn] eq 'c') { 2162: $output.='\vspace*{-6 mm}\begin{center}'; 2163: } elsif ($Apache::londefdef::table[-1]{'align'}[$in][$jn] eq 'r') { 2164: $output.=' \hfill \llap{' 2165: } 2166: $output.=$Apache::londefdef::table[-1]{'content'}[$in][$jn]; 2167: if ($Apache::londefdef::table[-1]{'align'}[$in][$jn] eq 'c') { 2168: $output.='\end{center}\vspace*{-6 mm}'; 2169: } elsif ($Apache::londefdef::table[-1]{'align'}[$in][$jn] eq 'r') { 2170: $output.='} '; 2171: } 2172: if ($jn!=$#fwidth) {$output.=' '.$Apache::londefdef::table[-1]{'vinc'};} 2173: } 2174: $output.=' \\\\ '.$Apache::londefdef::table[-1]{'hinc'}.' '; 2175: } 2176: # Note that \newline destroys alignment env's produced by e.g. <div> 2177: # $Apache::londefdef::table[-1]{'output'} .= $header_of_table.$Apache::londefdef::table[-1]{'hinc'}.$output.'\end{tabular}\strut\newline\strut '; 2178: $Apache::londefdef::table[-1]{'output'} .= $header_of_table.$Apache::londefdef::table[-1]{'hinc'}.$output.'\end{tabular}\strut'.'\\\\'."\n".'\strut '; 2179: if ($#Apache::londefdef::table > 0) { 2180: my $inmemory = $Apache::londefdef::table[-1]{'output'}; 2181: pop @Apache::londefdef::table; 2182: push @{$Apache::londefdef::table[-1]{'include'}}, $inmemory; 2183: } else { 2184: $currentstring .= $Apache::londefdef::table[-1]{'output'}; 2185: pop @Apache::londefdef::table; 2186: undef @Apache::londefdef::table; 2187: } 2188: } 2189: return $currentstring; 2190: } 2191: 2192: #-- <tr> tag (end tag optional) 2193: sub start_tr { 2194: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_; 2195: my $currentstring = ''; 2196: if ($target eq 'web') { 2197: $currentstring = $token->[4]; 2198: } elsif ($target eq 'tex') { 2199: $Apache::londefdef::table[-1]{'row_number'}++; 2200: my $alignchar=&Apache::lonxml::get_param('align',$parstack,$safeeval,undef,1); 2201: if ($alignchar ne '') { 2202: push @ {$Apache::londefdef::table[-1]{'rows'} },substr($alignchar,0,1); 2203: } else { 2204: push @ {$Apache::londefdef::table[-1]{'rows'} }, 'l'; 2205: } 2206: push ( @{ $Apache::londefdef::table[-1]{'rowdata'} }, $Apache::londefdef::table[-1]{'hinc'}); 2207: $Apache::londefdef::table[-1]{'counter_columns'} = -1; 2208: push @ {$Apache::londefdef::table[-1]{'TeXlen'}}, []; 2209: push @ {$Apache::londefdef::table[-1]{'objectlen'}}, []; 2210: push @ {$Apache::londefdef::table[-1]{'minlen'}}, []; 2211: push @ {$Apache::londefdef::table[-1]{'maxlen'}}, []; 2212: push @ {$Apache::londefdef::table[-1]{'content'}}, []; 2213: } 2214: return $currentstring; 2215: } 2216: 2217: sub end_tr { 2218: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_; 2219: my $currentstring = &end_p(); # Close any pending <p> in the row. 2220: if ($target eq 'web') { 2221: $currentstring .= $token->[2]; 2222: } elsif ($target eq 'tex') { 2223: if ($Apache::londefdef::TD_redirection) { 2224: &end_td_tex($parstack,$parser,$safeeval); 2225: } 2226: } 2227: return $currentstring; 2228: } 2229: 2230: #-- <td> tag (end tag optional) 2231: sub start_td { 2232: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_; 2233: my $currentstring = ''; 2234: if ($target eq 'web') { 2235: $currentstring = $token->[4]; 2236: } elsif ($target eq 'tex') { 2237: $Apache::londefdef::TD_redirection = 1; 2238: &tag_check('tr','td',$tagstack,$parstack,$parser,$safeeval); 2239: } 2240: return $currentstring; 2241: } 2242: 2243: sub tag_check { 2244: my ($good_tag,$bad_tag,$tagstack,$parstack,$parser,$safeeval) = @_; 2245: my @ar=@$parstack; 2246: for (my $i=$#ar-1;$i>=0;$i--) { 2247: if (lc($$tagstack[$i]) eq $good_tag) { 2248: &start_td_tex($parstack,$parser,$safeeval); 2249: last; 2250: } elsif (lc($$tagstack[$i]) eq $bad_tag) { 2251: splice @ar, $i+1; 2252: &end_td_tex(\@ar,$parser,$safeeval); 2253: &start_td_tex($parstack,$parser,$safeeval); 2254: last; 2255: } 2256: } 2257: return ''; 2258: } 2259: 2260: sub start_td_tex { 2261: my ($parstack,$parser,$safeeval) = @_; 2262: my $alignchar = substr(&Apache::lonxml::get_param('align',$parstack,$safeeval,undef,1),0,1); 2263: if ($alignchar eq '') { 2264: $alignchar = $Apache::londefdef::table[-1]{'rows'}[-1]; 2265: } 2266: push @{ $Apache::londefdef::table[-1]{'align'}[$Apache::londefdef::table[-1]{'row_number'}] }, $alignchar; 2267: $Apache::londefdef::table[-1]{'counter_columns'}++; 2268: my $TeXwidth=&Apache::lonxml::get_param('TeXwidth',$parstack,$safeeval,undef,0); 2269: if (defined $TeXwidth) { 2270: my $current_length=&recalc($TeXwidth); 2271: $current_length=~/(\d+\.?\d*)/; 2272: push @ {$Apache::londefdef::table[-1]{'TeXlen'}[$Apache::londefdef::table[-1]{'row_number'}] },$1; 2273: } 2274: &Apache::lonxml::startredirection(); 2275: return ''; 2276: } 2277: 2278: sub end_td_tex { 2279: my ($parstack,$parser,$safeeval) = @_; 2280: my $current_row = $Apache::londefdef::table[-1]{'row_number'}; 2281: my $data=&Apache::lonxml::endredirection(); 2282: my $TeXwidth=&Apache::lonxml::get_param('TeXwidth',$parstack,$safeeval,undef,0); 2283: if (defined $TeXwidth) { 2284: push @ {$Apache::londefdef::table[-1]{'objectlen'}[$Apache::londefdef::table[-1]{'row_number'}] },'0'; 2285: push @ {$Apache::londefdef::table[-1]{'minlen'}[$Apache::londefdef::table[-1]{'row_number'}] },'0'; 2286: push @ {$Apache::londefdef::table[-1]{'maxlen'}[$Apache::londefdef::table[-1]{'row_number'}] },'0'; 2287: } else { 2288: if (($data=~m/width\s*=\s*(\d+\.?\d*\s*(mm|cm|in|pc|pt)*)/) or ($data=~m/\[(\d+\.?\d*)\s*mm\]/)) { 2289: my $garbage_data=$data; 2290: my $fwidth=0; 2291: while ($garbage_data=~m/width\s*=\s*(\d+\.?\d*\s*(mm|cm|in|pc|pt)*)/) { 2292: my $current_length=&recalc($1); 2293: $current_length=~/(\d+\.?\d*)/; 2294: if ($fwidth<$1) {$fwidth=$1;} 2295: $garbage_data=~s/width\s*=\s*(\d+\.?\d*\s*(mm|cm|in|pc|pt)*)//; 2296: } 2297: while ($garbage_data=~m/\[(\d+\.?\d*)\s*mm\]/) { 2298: my $current_length=$1; 2299: if ($fwidth<$current_length) {$fwidth=$current_length;} 2300: $garbage_data=~s/\[(\d+\.?\d*)\s*mm\]//; 2301: } 2302: push @ {$Apache::londefdef::table[-1]{'TeXlen'}[$Apache::londefdef::table[-1]{'row_number'}] },'0'; 2303: push @ {$Apache::londefdef::table[-1]{'objectlen'}[$Apache::londefdef::table[-1]{'row_number'}] },$fwidth; 2304: push @ {$Apache::londefdef::table[-1]{'minlen'}[$Apache::londefdef::table[-1]{'row_number'}] },'0'; 2305: push @ {$Apache::londefdef::table[-1]{'maxlen'}[$Apache::londefdef::table[-1]{'row_number'}] },'0'; 2306: } elsif ($data=~/\\parbox\{\s*\d+\.?\d*\s*(mm|cm|in|pc|pt)*\s*\}/ or $data=~/\\epsfxsize\s*=\s*\d+\.?\d*\s*(mm|cm|in|pc|pt)*/) { 2307: my $garbage_data=$data; 2308: my $fwidth=0; 2309: while ($garbage_data=~/\\parbox\{\s*(\d+\.?\d*\s*(mm|cm|in|pc|pt)*)\s*\}/) { 2310: my $current_length=&recalc($1); 2311: $current_length=~/(\d+\.?\d*)/; 2312: if ($fwidth<$1) {$fwidth=$1;} 2313: $garbage_data=~s/\\parbox\{\s*(\d+\.?\d*\s*(mm|cm|in|pc|pt)*)//; 2314: } 2315: while ($garbage_data=~/\\epsfxsize\s*=\s*(\d+\.?\d*\s*(mm|cm|in|pc|pt)*)/) { 2316: my $current_length=&recalc($1); 2317: $current_length=~/(\d+\.?\d*)/; 2318: if ($fwidth<$1) {$fwidth=$1;} 2319: $garbage_data=~s/\\epsfxsize\s*=\s*(\d+\.?\d*\s*(mm|cm|in|pc|pt)*)//; 2320: } 2321: push @ {$Apache::londefdef::table[-1]{'TeXlen'}[$Apache::londefdef::table[-1]{'row_number'}] },'0'; 2322: push @ {$Apache::londefdef::table[-1]{'objectlen'}[$Apache::londefdef::table[-1]{'row_number'}] },$fwidth; 2323: push @ {$Apache::londefdef::table[-1]{'minlen'}[$Apache::londefdef::table[-1]{'row_number'}] },'0'; 2324: push @ {$Apache::londefdef::table[-1]{'maxlen'}[$Apache::londefdef::table[-1]{'row_number'}] },'0'; 2325: $data=~s/\\\\\s*$//; 2326: } else { 2327: $data=~s/^\s+(\S.*)/$1/; 2328: $data=~s/(.*\S)\s+$/$1/; 2329: $data=~s/(\s)+/$1/; 2330: my ($current_length,$min_length)=(0,0); 2331: if ($data=~/\\vskip/) { 2332: my $newdata=$data; 2333: $newdata=~s/\\vskip \d*\.?\d*\s*mm/THISISJUSTTEMPORARYSEPARATOR/g; 2334: my @newdata=split(/THISISJUSTTEMPORARYSEPARATOR/,$newdata); 2335: foreach my $elementdata (@newdata) { 2336: my $lengthnewdata=2.5*&LATEX_length($elementdata); 2337: if ($lengthnewdata>$current_length) {$current_length=$lengthnewdata;} 2338: my @words=split(/ /,$elementdata); 2339: foreach my $word (@words) { 2340: my $lengthword=2.5*&LATEX_length($word); 2341: if ($min_length<$lengthword) {$min_length=$lengthword;} 2342: } 2343: } 2344: } else { 2345: $current_length=2.5*&LATEX_length($data); 2346: my @words=split(/ /,$data); 2347: foreach my $word (@words) { 2348: my $lengthword=2*&LATEX_length($word); 2349: if ($min_length<$lengthword) {$min_length=$lengthword;} 2350: } 2351: } 2352: push @ {$Apache::londefdef::table[-1]{'TeXlen'}[$Apache::londefdef::table[-1]{'row_number'}] },'0'; 2353: push @ {$Apache::londefdef::table[-1]{'objectlen'}[$Apache::londefdef::table[-1]{'row_number'}] },'0'; 2354: push @ {$Apache::londefdef::table[-1]{'maxlen'}[$Apache::londefdef::table[-1]{'row_number'}] },$current_length; 2355: push @ {$Apache::londefdef::table[-1]{'minlen'}[$Apache::londefdef::table[-1]{'row_number'}] },$min_length; 2356: } 2357: } 2358: for (my $in=0; $in<=$#{$Apache::londefdef::table[-1]{'include'}};$in++) { 2359: $data=~s/\\keephidden\{NEW TABLE ENTRY\}/$Apache::londefdef::table[-1]{'include'}[$in]/; 2360: } 2361: push @ {$Apache::londefdef::table[-1]{'content'}[-1] },$data; 2362: return''; 2363: } 2364: 2365: sub end_td { 2366: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_; 2367: my $currentstring = ''; 2368: if ($target eq 'web') { 2369: $currentstring = $token->[2]; 2370: } elsif ($target eq 'tex') { 2371: $Apache::londefdef::TD_redirection =0; 2372: &end_td_tex($parstack,$parser,$safeeval); 2373: } 2374: return $currentstring; 2375: } 2376: 2377: #-- <th> tag (end tag optional) 2378: sub start_th { 2379: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_; 2380: my $currentstring = ''; 2381: if ($target eq 'web') { 2382: $currentstring = $token->[4]; 2383: } elsif ($target eq 'tex') { 2384: $Apache::londefdef::TD_redirection = 1; 2385: &tagg_check('tr','th',$tagstack,$parstack,$parser,$safeeval); 2386: } 2387: return $currentstring; 2388: } 2389: 2390: sub tagg_check { 2391: my ($good_tag,$bad_tag,$tagstack,$parstack,$parser,$safeeval) = @_; 2392: my @ar=@$parstack; 2393: for (my $i=$#ar-1;$i>=0;$i--) { 2394: if (lc($$tagstack[$i]) eq $good_tag) { 2395: &start_th_tex($parstack,$parser,$safeeval); 2396: last; 2397: } elsif (lc($$tagstack[$i]) eq $bad_tag) { 2398: splice @ar, $i+1; 2399: &end_th_tex(\@ar,$parser,$safeeval); 2400: &start_th_tex($parstack,$parser,$safeeval); 2401: last; 2402: } 2403: } 2404: return ''; 2405: } 2406: 2407: sub start_th_tex { 2408: my ($parstack,$parser,$safeeval) = @_; 2409: my $alignchar = substr(&Apache::lonxml::get_param('align',$parstack,$safeeval,undef,1),0,1); 2410: if ($alignchar eq '') { 2411: $alignchar = $Apache::londefdef::table[-1]{'rows'}[-1]; 2412: } 2413: push @{ $Apache::londefdef::table[-1]{'align'}[$Apache::londefdef::table[-1]{'row_number'}] }, $alignchar; 2414: $Apache::londefdef::table[-1]{'counter_columns'}++; 2415: my $TeXwidth=&Apache::lonxml::get_param('TeXwidth',$parstack,$safeeval,undef,0); 2416: if (defined $TeXwidth) { 2417: my $current_length=&recalc($TeXwidth); 2418: $current_length=~/(\d+\.?\d*)/; 2419: push @ {$Apache::londefdef::table[-1]{'TeXlen'}[$Apache::londefdef::table[-1]{'row_number'}] },$1; 2420: } 2421: &Apache::lonxml::startredirection(); 2422: return ''; 2423: } 2424: 2425: sub end_th_tex { 2426: my ($parstack,$parser,$safeeval) = @_; 2427: my $current_row = $Apache::londefdef::table[-1]{'row_number'}; 2428: my $data=&Apache::lonxml::endredirection(); 2429: my $TeXwidth=&Apache::lonxml::get_param('TeXwidth',$parstack,$safeeval,undef,0); 2430: if (defined $TeXwidth) { 2431: push @ {$Apache::londefdef::table[-1]{'objectlen'}[$Apache::londefdef::table[-1]{'row_number'}] },'0'; 2432: push @ {$Apache::londefdef::table[-1]{'minlen'}[$Apache::londefdef::table[-1]{'row_number'}] },'0'; 2433: push @ {$Apache::londefdef::table[-1]{'maxlen'}[$Apache::londefdef::table[-1]{'row_number'}] },'0'; 2434: } else { 2435: if (($data=~m/width\s*=\s*(\d+\.?\d*\s*(mm|cm|in|pc|pt)*)/) or ($data=~m/\[(\d+\.?\d*)\s*mm\]/)) { 2436: my $garbage_data=$data; 2437: my $fwidth=0; 2438: while ($garbage_data=~m/width\s*=\s*(\d+\.?\d*\s*(mm|cm|in|pc|pt)*)/) { 2439: my $current_length=&recalc($1); 2440: $current_length=~/(\d+\.?\d*)/; 2441: if ($fwidth<$1) {$fwidth=$1;} 2442: $garbage_data=~s/width\s*=\s*(\d+\.?\d*\s*(mm|cm|in|pc|pt)*)//; 2443: } 2444: while ($garbage_data=~m/\[(\d+\.?\d*)\s*mm\]/) { 2445: my $current_length=$1; 2446: if ($fwidth<$current_length) {$fwidth=$current_length;} 2447: $garbage_data=~s/\[(\d+\.?\d*)\s*mm\]//; 2448: } 2449: push @ {$Apache::londefdef::table[-1]{'TeXlen'}[$Apache::londefdef::table[-1]{'row_number'}] },'0'; 2450: push @ {$Apache::londefdef::table[-1]{'objectlen'}[$Apache::londefdef::table[-1]{'row_number'}] },$fwidth; 2451: push @ {$Apache::londefdef::table[-1]{'minlen'}[$Apache::londefdef::table[-1]{'row_number'}] },'0'; 2452: push @ {$Apache::londefdef::table[-1]{'maxlen'}[$Apache::londefdef::table[-1]{'row_number'}] },'0'; 2453: } else { 2454: $data=~s/^\s+(\S.*)/$1/; 2455: $data=~s/(.*\S)\s+$/$1/; 2456: $data=~s/(\s)+/$1/; 2457: my ($current_length,$min_length)=(0,0); 2458: if ($data=~/\\vskip/) { 2459: my $newdata=$data; 2460: $newdata=~s/\\vskip \d*\.?\d*\s*mm/THISISJUSTTEMPORARYSEPARATOR/g; 2461: my @newdata=split(/THISISJUSTTEMPORARYSEPARATOR/,$newdata); 2462: foreach my $elementdata (@newdata) { 2463: my $lengthnewdata=2.5*&LATEX_length($elementdata); 2464: if ($lengthnewdata>$current_length) {$current_length=$lengthnewdata;} 2465: my @words=split(/ /,$elementdata); 2466: foreach my $word (@words) { 2467: my $lengthword=2.5*&LATEX_length($word); 2468: if ($min_length<$lengthword) {$min_length=$lengthword;} 2469: } 2470: } 2471: } else { 2472: $current_length=2.5*&LATEX_length($data); 2473: my @words=split(/ /,$data); 2474: foreach my $word (@words) { 2475: my $lengthword=2*&LATEX_length($word); 2476: if ($min_length<$lengthword) {$min_length=$lengthword;} 2477: } 2478: } 2479: push @ {$Apache::londefdef::table[-1]{'TeXlen'}[$Apache::londefdef::table[-1]{'row_number'}] },'0'; 2480: push @ {$Apache::londefdef::table[-1]{'objectlen'}[$Apache::londefdef::table[-1]{'row_number'}] },'0'; 2481: push @ {$Apache::londefdef::table[-1]{'maxlen'}[$Apache::londefdef::table[-1]{'row_number'}] },$current_length; 2482: push @ {$Apache::londefdef::table[-1]{'minlen'}[$Apache::londefdef::table[-1]{'row_number'}] },$min_length; 2483: } 2484: } 2485: for (my $in=0; $in<=$#{$Apache::londefdef::table[-1]{'include'}};$in++) { 2486: $data=~s/\\keephidden\{NEW TABLE ENTRY\}/$Apache::londefdef::table[-1]{'include'}[$in]/; 2487: } 2488: #make data bold 2489: $data='\textbf{'.$data.'}'; 2490: push @ {$Apache::londefdef::table[-1]{'content'}[-1] },$data; 2491: return''; 2492: } 2493: 2494: sub end_th { 2495: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_; 2496: my $currentstring = &end_p(); # Close any open <p> in the row. 2497: if ($target eq 'web') { 2498: $currentstring .= $token->[2]; 2499: } elsif ($target eq 'tex') { 2500: $Apache::londefdef::TD_redirection =0; 2501: &end_th_tex($parstack,$parser,$safeeval); 2502: } 2503: return $currentstring; 2504: } 2505: 2506: #-- <img> tag (end tag forbidden) 2507: # 2508: # Render the <IMG> tag. 2509: # <IMG> has the following attributes (in addition to the 2510: # standard HTML ones: 2511: # TeXwrap - Governs how the tex target will try to wrap text around 2512: # horizontally aligned images. 2513: # TeXwidth - The width of the image when rendered for print (mm). 2514: # TeXheight - The height of the image when rendered for print (mm) 2515: # (Note there seems to also be support for this as a % of page size) 2516: # 2517: sub start_img { 2518: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_; 2519: my $src = &Apache::lonxml::get_param('src',$parstack,$safeeval, 2520: undef,1); 2521: if (not $src and ($target eq 'web' or $target eq 'tex')) { 2522: my $inside = &Apache::lonxml::get_all_text("/img",$parser); 2523: return ''; 2524: } 2525: $Apache::lonxml::extlinks[$#Apache::lonxml::extlinks+1]=$src; 2526: my $currentstring = ''; 2527: my $scaling = .3; 2528: 2529: # Render unto browsers that which are the browser's... 2530: 2531: if ($target eq 'web') { 2532: if ($env{'browser.imagesuppress'} ne 'on') { 2533: $currentstring.=&Apache::lonenc::encrypt_ref($token,{'src'=>$src}); 2534: } else { 2535: my $alttag= &Apache::lonxml::get_param 2536: ('alt',$parstack,$safeeval,undef,1); 2537: unless ($alttag) { 2538: $alttag=&Apache::lonmeta::alttag 2539: ($Apache::lonxml::pwd[-1],$src); 2540: } 2541: $currentstring.='[IMAGE: '.$alttag.']'; 2542: } 2543: 2544: # and render unto TeX that which is LaTeX 2545: 2546: } elsif ($target eq 'tex') { 2547: # 2548: # The alignment will require some superstructure to be put around 2549: # the \includegraphics stuff. At present we can only partially 2550: # simulate the alignments offered by html. 2551: # 2552: # 2553: my $align = lc(&Apache::lonxml::get_param('align', 2554: $parstack, 2555: $safeeval, 2556: undef,1)); 2557: if(!$align) { 2558: $align = "bottom"; # This is html's default so it's ours too. 2559: } 2560: # 2561: &Apache::lonxml::debug("Alignemnt = $align"); 2562: # LaTeX's image/text wrapping is really bad since it wants to 2563: # make figures float. 2564: # The user has the optional parameter (applicable only to l/r 2565: # alignment to use the picins/parpic directive to get wrapped text 2566: # this is also imperfect.. that's why we give them a choice... 2567: # so they can't yell at us for our choice. 2568: # 2569: my $latex_rendering = &Apache::lonxml::get_param('TeXwrap', 2570: $parstack, 2571: $safeeval, 2572: undef,0); 2573: &Apache::lonxml::debug("LaTeX rendering = $latex_rendering"); 2574: if(!$latex_rendering) { 2575: $latex_rendering = "parbox"; 2576: } 2577: &Apache::lonxml::debug("LaTeX rendering = $latex_rendering image file: $src"); 2578: 2579: #if original gif/jpg/png file exist do following: 2580: my $origsrc=$src; 2581: my ($path,$file) = &get_eps_image($src); 2582: $src=&Apache::lonnet::filelocation($Apache::lonxml::pwd[-1],$src); 2583: &Apache::lonxml::debug("path = $path file = $file src = $src"); 2584: if (-e $src) { 2585: &Apache::lonxml::debug("$src exists"); 2586: my ($height_param,$width_param)= 2587: &image_size($origsrc,0.3,$parstack,$safeeval); 2588: my $destpath = $path; 2589: $destpath =~ s/ /\_/g; # Spaces in path cause LaTex to vomit. 2590: my $destfile = $file; 2591: $destfile =~ s/ /\_/g; 2592: my $size; 2593: if ($width_param) { $size.='width='.$width_param.' mm,'; } 2594: if ($height_param) { $size.='height='.$height_param.' mm]'; } 2595: $size='['.$size; 2596: $size=~s/,$/]/; 2597: $currentstring .= '\graphicspath{{'.$destpath.'}}' 2598: .'\includegraphics'.$size.'{'.$destfile.'} '; 2599: 2600: # If there's an alignment specification we need to honor it here. 2601: # For the horizontal alignments, we will also honor the 2602: # value of the latex specfication. The default is parbox, 2603: # and that's used for illegal values too. 2604: # 2605: # Even though we set a default alignment value, the user 2606: # could have given us an illegal value. In that case we 2607: # just use the default alignment of bottom.. 2608: if ($align eq "top") { 2609: $currentstring = '\raisebox{-'.$height_param.'mm}{'.$currentstring.'}'; 2610: } elsif (($align eq "center") || ($align eq "middle")) { # Being kind 2611: my $offset = $height_param/2; 2612: $currentstring = '\raisebox{-'.$offset.'mm}{'.$currentstring.'}'; 2613: } elsif ($align eq "left") { 2614: if ($latex_rendering eq "parpic") { 2615: $currentstring = '\parpic[l]{'.$currentstring.'}'; 2616: } else { # parbox rendering 2617: $currentstring = "\\strut\\newline\n". 2618: '\parbox{'.$width_param.'mm}{'.$currentstring.'}'; 2619: } 2620: } elsif ($align eq "right") { 2621: if ($latex_rendering eq "parpic") { 2622: $currentstring = '\parpic[r]{'.$currentstring.'}'; 2623: } else { # parbox rendering. 2624: $currentstring = '\parbox{'.$width_param.'mm}{\begin{flushright}' 2625: .$currentstring.'\end{flushright}} \newline'."\n"; 2626: } 2627: } else { # Bottom is also default. 2628: # $currentstring = '\raisebox{'.$height_param.'mm}{'.$currentstring.'}'; 2629: } 2630: } else { 2631: &Apache::lonxml::debug("$src does not exist"); 2632: #original image file doesn't exist so check the alt attribute 2633: my $alt = 2634: &Apache::lonxml::get_param('alt',$parstack,$safeeval,undef,1); 2635: unless ($alt) { 2636: $alt=&Apache::lonmeta::alttag($Apache::lonxml::pwd[-1],$src); 2637: } 2638: 2639: if ($alt) { $currentstring .= ' '.$alt.' '; } 2640: } 2641: 2642: # And here's where the semi-quote breaks down: allow the user 2643: # to edit the beast as well by rendering the problem for edit: 2644: } elsif ($target eq 'edit') { 2645: $currentstring .=&Apache::edit::tag_start($target,$token); 2646: $currentstring .=&Apache::edit::text_arg('Image Url:','src',$token,70). 2647: &Apache::edit::browse('src',undef,'alt').' '. 2648: &Apache::edit::search('src',undef,'alt').'<br />'; 2649: $currentstring .=&Apache::edit::text_arg('Description:','alt',$token,70).'<br />'; 2650: $currentstring .=&Apache::edit::text_arg('width (pixel):','width',$token,5); 2651: $currentstring .=&Apache::edit::text_arg('height (pixel):','height',$token,5).'<br />'; 2652: $currentstring .=&Apache::edit::text_arg('TeXwidth (mm):','TeXwidth',$token,5); 2653: $currentstring .=&Apache::edit::text_arg('TeXheight (mm):','TeXheight',$token,5); 2654: $currentstring .=&Apache::edit::select_arg('Alignment:','align', 2655: ['','bottom','middle','top','left','right'],$token,5); 2656: $currentstring .=&Apache::edit::select_arg('TeXwrap:', 'TeXwrap', 2657: ['', 'parbox', 'parpic'], $token, 2); 2658: $currentstring .=&Apache::edit::end_row().&Apache::edit::start_spanning_row(); 2659: my $src= &Apache::lonxml::get_param('src',$parstack,$safeeval); 2660: my $alt= &Apache::lonxml::get_param('alt',$parstack,$safeeval); 2661: my $width= &Apache::lonxml::get_param('width',$parstack,$safeeval); 2662: my $height= &Apache::lonxml::get_param('height',$parstack,$safeeval); 2663: 2664: 2665: $currentstring .= '<img src="'.$src.'" alt="'.$alt.'" '; 2666: if ($width) { $currentstring.=' width="'.$width.'" '; } 2667: if ($height) { $currentstring.=' height="'.$height.'" '; } 2668: $currentstring .= ' />'; 2669: } elsif ($target eq 'modified') { 2670: my ($osrc,$owidth,$oheight)= 2671: ($token->[2]{'src'},$token->[2]{'width'},$token->[2]{'height'}); 2672: my $ctag=&Apache::edit::get_new_args($token,$parstack, 2673: $safeeval,'src','alt','align', 2674: 'TeXwidth','TeXheight', 'TeXwrap', 2675: 'width','height'); 2676: my ($nsrc,$nwidth,$nheight)= 2677: ($token->[2]{'src'},$token->[2]{'width'},$token->[2]{'height'}); 2678: my $loc=&Apache::lonnet::filelocation($Apache::lonxml::pwd[-1],$nsrc); 2679: &image_replication($loc); 2680: my ($iwidth,$iheight); 2681: if (-e $loc) { 2682: my $image = Image::Magick->new; 2683: $image->Read($loc); 2684: ($iwidth, $iheight) = ($image->Get('width'), 2685: $image->Get('height')); 2686: } 2687: if ($osrc ne $nsrc || (!$nwidth && !$nheight)) { 2688: # changed image or no size specified, 2689: # if they didn't explicitly change the 2690: # width or height use the ones from the image 2691: if ($iwidth && $iheight) { 2692: if ($owidth == $nwidth || (!$nwidth && !$nheight)) { 2693: $token->[2]{'width'} = $iwidth;$ctag=1; 2694: } 2695: if ($oheight == $nheight || (!$nwidth && !$nheight)) { 2696: $token->[2]{'height'}=$iheight;$ctag=1; 2697: } 2698: } 2699: } 2700: my ($cwidth,$cheight)=($token->[2]{'width'},$token->[2]{'height'}); 2701: # if we don't have a width or height 2702: if ($iwidth && $cwidth && !$cheight) { 2703: $token->[2]{'height'}=int(($cwidth/$iwidth)*$iheight);$ctag=1; 2704: } 2705: if ($iheight && $cheight && !$cwidth) { 2706: $token->[2]{'width'}=int(($cheight/$iheight)*$iwidth);$ctag=1; 2707: } 2708: if ($ctag) {$currentstring=&Apache::edit::rebuild_tag($token);} 2709: } 2710: 2711: return $currentstring; 2712: } 2713: 2714: sub end_img { 2715: my ($target,$token) = @_; 2716: my $currentstring = ''; 2717: if ($target eq 'web') { 2718: $currentstring = $token->[2]; 2719: } elsif ($target eq 'tex') { 2720: $currentstring = ''; 2721: } 2722: return $currentstring; 2723: } 2724: 2725: #-- <applet> tag (end tag required) 2726: sub start_applet { 2727: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_; 2728: 2729: my $code=&Apache::lonxml::get_param('code',$parstack,$safeeval,undef,1); 2730: $Apache::lonxml::extlinks[$#Apache::lonxml::extlinks+1]=$code; 2731: 2732: my $archive=&Apache::lonxml::get_param('archive',$parstack,$safeeval, 2733: undef,1); 2734: $Apache::lonxml::extlinks[$#Apache::lonxml::extlinks+1]=$archive; 2735: 2736: my $currentstring = ''; 2737: if ($target eq 'web') { 2738: if ($env{'browser.appletsuppress'} ne 'on') { 2739: $currentstring = &Apache::lonenc::encrypt_ref($token, 2740: {'code'=>$code, 2741: 'archive'=>$archive} 2742: ); 2743: } else { 2744: my $alttag= &Apache::lonxml::get_param('alt',$parstack, 2745: $safeeval,undef,1); 2746: unless ($alttag) { 2747: $alttag=&Apache::lonmeta::alttag($Apache::lonxml::pwd[-1], 2748: $code); 2749: } 2750: $currentstring='[APPLET: '.$alttag.']'; 2751: } 2752: } elsif ($target eq 'tex') { 2753: my $alttag= &Apache::lonxml::get_param('alt',$parstack, 2754: $safeeval,undef,1); 2755: unless ($alttag) { 2756: my $code=&Apache::lonxml::get_param('code',$parstack,$safeeval, 2757: undef,1); 2758: $alttag=&Apache::lonmeta::alttag($Apache::lonxml::pwd[-1], 2759: $code); 2760: } 2761: $currentstring.='\begin{center} \fbox{Java Applet: '.$alttag. 2762: '.}\end{center}'; 2763: } 2764: return $currentstring; 2765: } 2766: 2767: sub end_applet { 2768: my ($target,$token) = @_; 2769: my $currentstring = ''; 2770: if ($target eq 'web') { 2771: $currentstring = $token->[2]; 2772: } elsif ($target eq 'tex') { 2773: } 2774: return $currentstring; 2775: } 2776: 2777: #-- <embed> tag (end tag optional/required) 2778: sub start_embed { 2779: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_; 2780: my $src=&Apache::lonxml::get_param('src',$parstack,$safeeval,undef,1); 2781: $Apache::lonxml::extlinks[$#Apache::lonxml::extlinks+1]=$src; 2782: my $currentstring = ''; 2783: if ($target eq 'web') { 2784: if ($env{'browser.embedsuppress'} ne 'on') { 2785: $currentstring=&Apache::lonenc::encrypt_ref($token,{'src'=>$src}); 2786: } else { 2787: my $alttag=&Apache::lonxml::get_param 2788: ('alt',$parstack,$safeeval,undef,1); 2789: unless ($alttag) { 2790: $alttag=&Apache::lonmeta::alttag($Apache::lonxml::pwd[-1],$src); 2791: } 2792: $currentstring='[EMBED: '.$alttag.']'; 2793: } 2794: } elsif ($target eq 'tex') { 2795: } 2796: return $currentstring; 2797: } 2798: 2799: sub end_embed { 2800: my ($target,$token) = @_; 2801: my $currentstring = ''; 2802: if ($target eq 'web') { 2803: $currentstring = $token->[2]; 2804: } elsif ($target eq 'tex') { 2805: } 2806: return $currentstring; 2807: } 2808: 2809: #-- <param> tag (end tag forbidden) 2810: sub start_param { 2811: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_; 2812: if (&Apache::lonxml::get_param 2813: ('name',$parstack,$safeeval,undef,1)=~/^cabbase$/i) { 2814: $Apache::lonxml::extlinks[$#Apache::lonxml::extlinks+1]= 2815: &Apache::lonxml::get_param('value',$parstack,$safeeval,undef,1); 2816: } 2817: $Apache::lonxml::extlinks[$#Apache::lonxml::extlinks+1]= 2818: &Apache::lonxml::get_param('src',$parstack,$safeeval,undef,1); 2819: my $currentstring = ''; 2820: if ($target eq 'web') { 2821: my %toconvert; 2822: my $src=&Apache::lonxml::get_param('src',$parstack,$safeeval,undef,1); 2823: if ($src) { $toconvert{'src'}= $src; } 2824: my $name=&Apache::lonxml::get_param('name',$parstack,$safeeval, 2825: undef,1); 2826: if ($name=~/^cabbase$/i) { 2827: $toconvert{'value'}=&Apache::lonxml::get_param('value',$parstack, 2828: $safeeval,undef,1); 2829: } 2830: $currentstring = &Apache::lonenc::encrypt_ref($token,\%toconvert); 2831: } elsif ($target eq 'tex') { 2832: } 2833: return $currentstring; 2834: } 2835: 2836: sub end_param { 2837: my ($target,$token) = @_; 2838: my $currentstring = ''; 2839: if ($target eq 'web') { 2840: $currentstring = $token->[2]; 2841: } elsif ($target eq 'tex') { 2842: } 2843: return $currentstring; 2844: } 2845: 2846: #-- <allow> tag 2847: sub start_allow { 2848: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_; 2849: my $src = &Apache::lonxml::get_param('src',$parstack,$safeeval,undef,1); 2850: $src=&Apache::lonnet::filelocation($Apache::lonxml::pwd[-1],$src); 2851: $Apache::lonxml::extlinks[$#Apache::lonxml::extlinks+1]= 2852: &Apache::lonnet::clutter($src); 2853: if ($target eq 'tex') { &image_replication($src); } 2854: my $result; 2855: if ($target eq 'edit') { 2856: $result .=&Apache::edit::tag_start($target,$token); 2857: $result .=&Apache::edit::text_arg('File Spec:','src',$token,70); 2858: $result .=&Apache::edit::end_row();#.&Apache::edit::start_spanning_row(); 2859: } elsif ($target eq 'modified') { 2860: my $constructtag=&Apache::edit::get_new_args($token,$parstack, 2861: $safeeval,'src'); 2862: if ($constructtag) { $result = &Apache::edit::rebuild_tag($token); } 2863: } 2864: return $result; 2865: } 2866: 2867: sub end_allow { 2868: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_; 2869: if ( $target eq 'edit') { return (&Apache::edit::end_table()); } 2870: return ''; 2871: } 2872: 2873: #-- Frames (end tag required) 2874: #-- <frameset> 2875: sub start_frameset { 2876: my ($target,$token) = @_; 2877: my $currentstring = ''; # Close any pending para. 2878: if ($target eq 'web') { 2879: if (!$Apache::lonxml::registered && 2880: $env{'request.state'} eq 'published') { 2881: $currentstring.='<head>'. 2882: &Apache::lonmenu::registerurl(undef,$target).'</head>'; 2883: } 2884: my $onLoad=''; 2885: foreach my $key (keys(%{$token->[2]})) { 2886: if ($key =~ /^onload$/i) { 2887: $onLoad.=$token->[2]->{$key}.';'; 2888: delete($token->[2]->{$key}); 2889: } 2890: } 2891: $token->[2]->{'onload'}=&Apache::lonmenu::loadevents().';'.$onLoad; 2892: my $onUnload=''; 2893: foreach my $key (keys(%{$token->[2]})) { 2894: if ($key =~ /^onunload$/i) { 2895: $onUnload.=$token->[2]->{$key}.';'; 2896: delete($token->[2]->{$key}); 2897: } 2898: } 2899: $token->[2]->{'onunload'}=&Apache::lonmenu::unloadevents(). 2900: ';'.$onUnload; 2901: 2902: $currentstring .= '<'.$token->[1]; 2903: foreach (keys %{$token->[2]}) { 2904: $currentstring.=' '.$_.'="'.$token->[2]->{$_}.'"'; 2905: } 2906: $currentstring.='>'; 2907: } 2908: return $currentstring; 2909: } 2910: 2911: sub end_frameset { 2912: my ($target,$token) = @_; 2913: my $currentstring = ''; 2914: if ($target eq 'web') { 2915: $currentstring = $token->[2]; 2916: } 2917: return $currentstring; 2918: } 2919: 2920: #-- <xmp> (end tag required) 2921: sub start_xmp { 2922: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_; 2923: my $currentstring = ''; 2924: if ($target eq 'web') { 2925: $currentstring .= $token->[4]; 2926: } elsif ($target eq 'tex') { 2927: $currentstring .= '\begin{verbatim}'; 2928: } 2929: return $currentstring; 2930: } 2931: 2932: sub end_xmp { 2933: my ($target,$token) = @_; 2934: my $currentstring = ''; 2935: if ($target eq 'web') { 2936: $currentstring .= $token->[2]; 2937: } elsif ($target eq 'tex') { 2938: $currentstring .= '\end{verbatim}'; 2939: } 2940: return $currentstring; 2941: } 2942: 2943: #-- <pre> (end tag required) 2944: sub start_pre { 2945: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_; 2946: my $currentstring = &end_p(); # close off pending <p> 2947: if ($target eq 'web') { 2948: $currentstring .= $token->[4]; 2949: } elsif ($target eq 'tex') { 2950: $currentstring .= '\begin{verbatim}'; 2951: } 2952: return $currentstring; 2953: } 2954: 2955: sub end_pre { 2956: my ($target,$token) = @_; 2957: my $currentstring = ''; 2958: if ($target eq 'web') { 2959: $currentstring .= $token->[2]; 2960: } elsif ($target eq 'tex') { 2961: $currentstring .= '\end{verbatim}'; 2962: } 2963: return $currentstring; 2964: } 2965: 2966: #-- <insert> 2967: sub start_insert { 2968: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_; 2969: my $currentstring = ''; 2970: if ($target eq 'web') { 2971: my $display = &Apache::lonxml::get_param('display',$parstack,$safeeval,undef,1); 2972: $currentstring .= '<b>'.$display.'</b>';; 2973: } 2974: return $currentstring; 2975: } 2976: 2977: sub end_insert { 2978: my ($target,$token) = @_; 2979: my $currentstring = ''; 2980: if ($target eq 'web') { 2981: $currentstring .= ''; 2982: } 2983: return $currentstring; 2984: } 2985: 2986: #-- <externallink> 2987: sub start_externallink { 2988: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_; 2989: my $currentstring = ''; 2990: if ($target eq 'web') { 2991: my $display = &Apache::lonxml::get_param('display',$parstack,$safeeval,undef,1); 2992: $currentstring .= '<b>'.$display.'</b>';; 2993: } 2994: return $currentstring; 2995: } 2996: 2997: sub end_externallink { 2998: my ($target,$token) = @_; 2999: my $currentstring = ''; 3000: if ($target eq 'web') { 3001: $currentstring .= ''; 3002: } 3003: return $currentstring; 3004: } 3005: 3006: #-- <blankspace heigth=""> 3007: sub start_blankspace { 3008: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_; 3009: my $currentstring = &end_p(); # closes off any unclosed <p> 3010: if ($target eq 'tex') { 3011: my $howmuch = &Apache::lonxml::get_param('heigth',$parstack,$safeeval,undef,1); 3012: $currentstring .= '\vskip '.$howmuch.' '; 3013: } 3014: return $currentstring; 3015: } 3016: 3017: sub end_blankspace { 3018: my ($target,$token) = @_; 3019: my $currentstring = ''; 3020: if ($target eq 'tex') { 3021: $currentstring .= ''; 3022: } 3023: return $currentstring; 3024: } 3025: 3026: #-- <abbr> tag (end tag required) 3027: sub start_abbr { 3028: my ($target,$token) = @_; 3029: my $currentstring = ''; 3030: if ($target eq 'web') { 3031: $currentstring = $token->[4]; 3032: } 3033: return $currentstring; 3034: } 3035: 3036: sub end_abbr { 3037: my ($target,$token) = @_; 3038: my $currentstring = ''; 3039: if ($target eq 'web') { 3040: $currentstring = $token->[2]; 3041: } 3042: return $currentstring; 3043: } 3044: 3045: #-- <acronym> tag (end tag required) 3046: sub start_acronym { 3047: my ($target,$token) = @_; 3048: my $currentstring = ''; 3049: if ($target eq 'web') { 3050: $currentstring = $token->[4]; 3051: } 3052: return $currentstring; 3053: } 3054: 3055: sub end_acronym { 3056: my ($target,$token) = @_; 3057: my $currentstring = ''; 3058: if ($target eq 'web') { 3059: $currentstring = $token->[2]; 3060: } 3061: return $currentstring; 3062: } 3063: 3064: #-- <area> tag (end tag forbidden) 3065: sub start_area { 3066: my ($target,$token) = @_; 3067: my $currentstring = ''; 3068: if ($target eq 'web') { 3069: $currentstring = $token->[4]; 3070: } 3071: return $currentstring; 3072: } 3073: 3074: sub end_area { 3075: my ($target,$token) = @_; 3076: my $currentstring = ''; 3077: if ($target eq 'web') { 3078: $currentstring = $token->[2]; 3079: } 3080: return $currentstring; 3081: } 3082: 3083: #-- <base> tag (end tag forbidden) 3084: sub start_base { 3085: my ($target,$token) = @_; 3086: my $currentstring = ''; 3087: if ($target eq 'web') { 3088: $currentstring = $token->[4]; 3089: } 3090: return $currentstring; 3091: } 3092: 3093: sub end_base { 3094: my ($target,$token) = @_; 3095: my $currentstring = ''; 3096: if ($target eq 'web') { 3097: $currentstring = $token->[2]; 3098: } 3099: return $currentstring; 3100: } 3101: 3102: #-- <bdo> tag (end tag required) 3103: sub start_bdo { 3104: my ($target,$token) = @_; 3105: my $currentstring = ''; 3106: if ($target eq 'web') { 3107: $currentstring = $token->[4]; 3108: } 3109: return $currentstring; 3110: } 3111: 3112: sub end_bdo { 3113: my ($target,$token) = @_; 3114: my $currentstring = ''; 3115: if ($target eq 'web') { 3116: $currentstring = $token->[2]; 3117: } 3118: return $currentstring; 3119: } 3120: 3121: #-- <bgsound> tag (end tag optional) 3122: sub start_bgsound { 3123: my ($target,$token) = @_; 3124: my $currentstring = ''; 3125: if ($target eq 'web') { 3126: $currentstring = $token->[4]; 3127: } 3128: return $currentstring; 3129: } 3130: 3131: sub end_bgsound { 3132: my ($target,$token) = @_; 3133: my $currentstring = ''; 3134: if ($target eq 'web') { 3135: $currentstring = $token->[2]; 3136: } 3137: return $currentstring; 3138: } 3139: 3140: #-- <blink> tag (end tag required) 3141: sub start_blink { 3142: my ($target,$token) = @_; 3143: my $currentstring = ''; 3144: if ($target eq 'web') { 3145: $currentstring = $token->[4]; 3146: } 3147: return $currentstring; 3148: } 3149: 3150: sub end_blink { 3151: my ($target,$token) = @_; 3152: my $currentstring = ''; 3153: if ($target eq 'web') { 3154: $currentstring = $token->[2]; 3155: } 3156: return $currentstring; 3157: } 3158: 3159: #-- <blockquote> tag (end tag required) 3160: sub start_blockquote { 3161: my ($target,$token) = @_; 3162: my $currentstring = &end_p(); # Close any unclosed <p> 3163: if ($target eq 'web') { 3164: $currentstring .= $token->[4]; 3165: } 3166: return $currentstring; 3167: } 3168: 3169: sub end_blockquote { 3170: my ($target,$token) = @_; 3171: my $currentstring = ''; 3172: if ($target eq 'web') { 3173: $currentstring = $token->[2]; 3174: } 3175: return $currentstring; 3176: } 3177: 3178: #-- <button> tag (end tag required) 3179: sub start_button { 3180: my ($target,$token) = @_; 3181: my $currentstring = ''; 3182: if ($target eq 'web') { 3183: $currentstring = $token->[4]; 3184: } 3185: return $currentstring; 3186: } 3187: 3188: sub end_button { 3189: my ($target,$token) = @_; 3190: my $currentstring = ''; 3191: if ($target eq 'web') { 3192: $currentstring = $token->[2]; 3193: } 3194: return $currentstring; 3195: } 3196: 3197: #-- <caption> tag (end tag required) 3198: sub start_caption { 3199: my ($target,$token) = @_; 3200: my $currentstring = ''; 3201: if ($target eq 'web') { 3202: $currentstring = $token->[4]; 3203: } 3204: return $currentstring; 3205: } 3206: 3207: sub end_caption { 3208: my ($target,$token) = @_; 3209: my $currentstring = ''; 3210: if ($target eq 'web') { 3211: $currentstring = $token->[2]; 3212: } 3213: return $currentstring; 3214: } 3215: 3216: #-- <col> tag (end tag forbdden) 3217: sub start_col { 3218: my ($target,$token) = @_; 3219: my $currentstring = ''; 3220: if ($target eq 'web') { 3221: $currentstring = $token->[4]; 3222: } 3223: return $currentstring; 3224: } 3225: 3226: sub end_col { 3227: my ($target,$token) = @_; 3228: my $currentstring = ''; 3229: if ($target eq 'web') { 3230: $currentstring = $token->[2]; 3231: } 3232: return $currentstring; 3233: } 3234: 3235: #-- <colgroup> tag (end tag optional) 3236: sub start_colgroup { 3237: my ($target,$token) = @_; 3238: my $currentstring = ''; 3239: if ($target eq 'web') { 3240: $currentstring = $token->[4]; 3241: } 3242: return $currentstring; 3243: } 3244: 3245: sub end_colgroup { 3246: my ($target,$token) = @_; 3247: my $currentstring = ''; 3248: if ($target eq 'web') { 3249: $currentstring = $token->[2]; 3250: } 3251: return $currentstring; 3252: } 3253: 3254: #-- <del> tag (end tag required) 3255: sub start_del { 3256: my ($target,$token) = @_; 3257: my $currentstring = ''; 3258: if ($target eq 'web') { 3259: $currentstring = $token->[4]; 3260: } 3261: return $currentstring; 3262: } 3263: 3264: sub end_del { 3265: my ($target,$token) = @_; 3266: my $currentstring = ''; 3267: if ($target eq 'web') { 3268: $currentstring = $token->[2]; 3269: } 3270: return $currentstring; 3271: } 3272: 3273: #-- <fieldset> tag (end tag required) 3274: sub start_fieldset { 3275: my ($target,$token) = @_; 3276: my $currentstring = ''; 3277: if ($target eq 'web') { 3278: $currentstring = $token->[4]; 3279: } 3280: return $currentstring; 3281: } 3282: 3283: sub end_fieldset { 3284: my ($target,$token) = @_; 3285: my $currentstring = ''; 3286: if ($target eq 'web') { 3287: $currentstring = $token->[2]; 3288: } 3289: return $currentstring; 3290: } 3291: 3292: #-- <frame> tag (end tag forbidden) 3293: sub start_frame { 3294: my ($target,$token) = @_; 3295: my $currentstring = ''; 3296: if ($target eq 'web') { 3297: $currentstring = $token->[4]; 3298: } 3299: return $currentstring; 3300: } 3301: 3302: sub end_frame { 3303: my ($target,$token) = @_; 3304: my $currentstring = ''; 3305: if ($target eq 'web') { 3306: $currentstring = $token->[2]; 3307: } 3308: return $currentstring; 3309: } 3310: 3311: #-- <iframe> tag (end tag required) 3312: sub start_iframe { 3313: my ($target,$token) = @_; 3314: my $currentstring = ''; 3315: if ($target eq 'web') { 3316: $currentstring = $token->[4]; 3317: } 3318: return $currentstring; 3319: } 3320: 3321: sub end_iframe { 3322: my ($target,$token) = @_; 3323: my $currentstring = ''; 3324: if ($target eq 'web') { 3325: $currentstring = $token->[2]; 3326: } 3327: return $currentstring; 3328: } 3329: 3330: #-- <ins> tag (end tag required) 3331: sub start_ins { 3332: my ($target,$token) = @_; 3333: my $currentstring = ''; 3334: if ($target eq 'web') { 3335: $currentstring = $token->[4]; 3336: } 3337: return $currentstring; 3338: } 3339: 3340: sub end_ins { 3341: my ($target,$token) = @_; 3342: my $currentstring = ''; 3343: if ($target eq 'web') { 3344: $currentstring = $token->[2]; 3345: } 3346: return $currentstring; 3347: } 3348: 3349: #-- <isindex> tag (end tag forbidden) 3350: sub start_isindex { 3351: my ($target,$token) = @_; 3352: my $currentstring = ''; 3353: if ($target eq 'web') { 3354: $currentstring = $token->[4]; 3355: } 3356: return $currentstring; 3357: } 3358: 3359: sub end_isindex { 3360: my ($target,$token) = @_; 3361: my $currentstring = ''; 3362: if ($target eq 'web') { 3363: $currentstring = $token->[2]; 3364: } 3365: return $currentstring; 3366: } 3367: 3368: #-- <keygen> tag (end tag forbidden) 3369: sub start_keygen { 3370: my ($target,$token) = @_; 3371: my $currentstring = ''; 3372: if ($target eq 'web') { 3373: $currentstring = $token->[4]; 3374: } 3375: return $currentstring; 3376: } 3377: 3378: sub end_keygen { 3379: my ($target,$token) = @_; 3380: my $currentstring = ''; 3381: if ($target eq 'web') { 3382: $currentstring = $token->[2]; 3383: } 3384: return $currentstring; 3385: } 3386: 3387: #-- <label> tag 3388: sub start_label { 3389: my ($target,$token) = @_; 3390: my $currentstring = ''; 3391: if ($target eq 'web') { 3392: $currentstring = $token->[4]; 3393: } 3394: return $currentstring; 3395: } 3396: 3397: sub end_label { 3398: my ($target,$token) = @_; 3399: my $currentstring = ''; 3400: if ($target eq 'web') { 3401: $currentstring = $token->[2]; 3402: } 3403: return $currentstring; 3404: } 3405: 3406: #-- <layer> tag (end tag required) 3407: sub start_layer { 3408: my ($target,$token) = @_; 3409: my $currentstring = ''; 3410: if ($target eq 'web') { 3411: $currentstring = $token->[4]; 3412: } 3413: return $currentstring; 3414: } 3415: 3416: sub end_layer { 3417: my ($target,$token) = @_; 3418: my $currentstring = ''; 3419: if ($target eq 'web') { 3420: $currentstring = $token->[2]; 3421: } 3422: return $currentstring; 3423: } 3424: 3425: #-- <legend> tag (end tag required) 3426: sub start_legend { 3427: my ($target,$token) = @_; 3428: my $currentstring = ''; 3429: if ($target eq 'web') { 3430: $currentstring = $token->[4]; 3431: } 3432: return $currentstring; 3433: } 3434: 3435: sub end_legend { 3436: my ($target,$token) = @_; 3437: my $currentstring = ''; 3438: if ($target eq 'web') { 3439: $currentstring = $token->[2]; 3440: } 3441: return $currentstring; 3442: } 3443: 3444: #-- <link> tag (end tag forbidden) 3445: sub start_link { 3446: my ($target,$token) = @_; 3447: my $currentstring = ''; 3448: if ($target eq 'web') { 3449: $currentstring = $token->[4]; 3450: } 3451: return $currentstring; 3452: } 3453: 3454: sub end_link { 3455: my ($target,$token) = @_; 3456: my $currentstring = ''; 3457: if ($target eq 'web') { 3458: $currentstring = $token->[2]; 3459: } 3460: return $currentstring; 3461: } 3462: 3463: #-- <marquee> tag (end tag optional) 3464: sub start_marquee { 3465: my ($target,$token) = @_; 3466: my $currentstring = ''; 3467: if ($target eq 'web') { 3468: $currentstring = $token->[4]; 3469: } 3470: return $currentstring; 3471: } 3472: 3473: sub end_marquee { 3474: my ($target,$token) = @_; 3475: my $currentstring = ''; 3476: if ($target eq 'web') { 3477: $currentstring = $token->[2]; 3478: } 3479: return $currentstring; 3480: } 3481: 3482: #-- <multicol> tag (end tag required) 3483: sub start_multicol { 3484: my ($target,$token) = @_; 3485: my $currentstring = &end_p(); # Close any pending <p> 3486: if ($target eq 'web') { 3487: $currentstring .= $token->[4]; 3488: } 3489: return $currentstring; 3490: } 3491: 3492: sub end_multicol { 3493: my ($target,$token) = @_; 3494: my $currentstring = ''; 3495: if ($target eq 'web') { 3496: $currentstring = $token->[2]; 3497: } 3498: return $currentstring; 3499: } 3500: 3501: #-- <nobr> tag (end tag required) 3502: sub start_nobr { 3503: my ($target,$token) = @_; 3504: my $currentstring = ''; 3505: if ($target eq 'web') { 3506: $currentstring = $token->[4]; 3507: } elsif ($target eq 'tex') { 3508: $currentstring='\mbox{'; 3509: } 3510: return $currentstring; 3511: } 3512: 3513: sub end_nobr { 3514: my ($target,$token) = @_; 3515: my $currentstring = ''; 3516: if ($target eq 'web') { 3517: $currentstring = $token->[2]; 3518: } elsif ($target eq 'tex') { 3519: $currentstring='}'; 3520: } 3521: return $currentstring; 3522: } 3523: 3524: #-- <noembed> tag (end tag required) 3525: sub start_noembed { 3526: my ($target,$token) = @_; 3527: my $currentstring = ''; 3528: if ($target eq 'web') { 3529: $currentstring = $token->[4]; 3530: } 3531: return $currentstring; 3532: } 3533: 3534: sub end_noembed { 3535: my ($target,$token) = @_; 3536: my $currentstring = ''; 3537: if ($target eq 'web') { 3538: $currentstring = $token->[2]; 3539: } 3540: return $currentstring; 3541: } 3542: 3543: #-- <noframes> tag (end tag required) 3544: sub start_noframes { 3545: my ($target,$token) = @_; 3546: my $currentstring = ''; 3547: if ($target eq 'web') { 3548: $currentstring = $token->[4]; 3549: } 3550: return $currentstring; 3551: } 3552: 3553: sub end_noframes { 3554: my ($target,$token) = @_; 3555: my $currentstring = ''; 3556: if ($target eq 'web') { 3557: $currentstring = $token->[2]; 3558: } 3559: return $currentstring; 3560: } 3561: 3562: #-- <nolayer> tag (end tag required) 3563: sub start_nolayer { 3564: my ($target,$token) = @_; 3565: my $currentstring = ''; 3566: if ($target eq 'web') { 3567: $currentstring = $token->[4]; 3568: } 3569: return $currentstring; 3570: } 3571: 3572: sub end_nolayer { 3573: my ($target,$token) = @_; 3574: my $currentstring = ''; 3575: if ($target eq 'web') { 3576: $currentstring = $token->[2]; 3577: } 3578: return $currentstring; 3579: } 3580: 3581: #-- <noscript> tag (end tag required) 3582: sub start_noscript { 3583: my ($target,$token) = @_; 3584: my $currentstring = ''; 3585: if ($target eq 'web') { 3586: $currentstring = $token->[4]; 3587: } 3588: return $currentstring; 3589: } 3590: 3591: sub end_noscript { 3592: my ($target,$token) = @_; 3593: my $currentstring = ''; 3594: if ($target eq 'web') { 3595: $currentstring = $token->[2]; 3596: } 3597: return $currentstring; 3598: } 3599: 3600: #-- <object> tag (end tag required) 3601: sub start_object { 3602: my ($target,$token) = @_; 3603: my $currentstring = ''; 3604: if ($target eq 'web') { 3605: $currentstring = $token->[4]; 3606: } 3607: return $currentstring; 3608: } 3609: 3610: sub end_object { 3611: my ($target,$token) = @_; 3612: my $currentstring = ''; 3613: if ($target eq 'web') { 3614: $currentstring = $token->[2]; 3615: } 3616: return $currentstring; 3617: } 3618: 3619: #-- <optgroup> tag (end tag required) 3620: sub start_optgroup { 3621: my ($target,$token) = @_; 3622: my $currentstring = ''; 3623: if ($target eq 'web') { 3624: $currentstring = $token->[4]; 3625: } 3626: return $currentstring; 3627: } 3628: 3629: sub end_optgroup { 3630: my ($target,$token) = @_; 3631: my $currentstring = ''; 3632: if ($target eq 'web') { 3633: $currentstring = $token->[2]; 3634: } 3635: return $currentstring; 3636: } 3637: 3638: #-- <samp> tag (end tag required) 3639: sub start_samp { 3640: my ($target,$token) = @_; 3641: my $currentstring = ''; 3642: if ($target eq 'web') { 3643: $currentstring = $token->[4]; 3644: } elsif ($target eq 'tex') { 3645: $currentstring='\texttt{'; 3646: } 3647: return $currentstring; 3648: } 3649: 3650: sub end_samp { 3651: my ($target,$token) = @_; 3652: my $currentstring = ''; 3653: if ($target eq 'web') { 3654: $currentstring = $token->[2]; 3655: } elsif ($target eq 'tex') { 3656: $currentstring='}'; 3657: } 3658: return $currentstring; 3659: } 3660: 3661: #-- <server> tag 3662: sub start_server { 3663: my ($target,$token) = @_; 3664: my $currentstring = ''; 3665: if ($target eq 'web') { 3666: $currentstring = $token->[4]; 3667: } 3668: return $currentstring; 3669: } 3670: 3671: sub end_server { 3672: my ($target,$token) = @_; 3673: my $currentstring = ''; 3674: if ($target eq 'web') { 3675: $currentstring = $token->[2]; 3676: } 3677: return $currentstring; 3678: } 3679: 3680: #-- <spacer> tag (end tag forbidden) 3681: sub start_spacer { 3682: my ($target,$token) = @_; 3683: my $currentstring = &end_p(); # Close off any open <p> tag. 3684: if ($target eq 'web') { 3685: $currentstring .= $token->[4]; 3686: } 3687: return $currentstring; 3688: } 3689: 3690: sub end_spacer { 3691: my ($target,$token) = @_; 3692: my $currentstring = ''; 3693: if ($target eq 'web') { 3694: $currentstring = $token->[2]; 3695: } 3696: return $currentstring; 3697: } 3698: 3699: #-- <span> tag (end tag required) 3700: sub start_span { 3701: my ($target,$token) = @_; 3702: my $currentstring = ''; 3703: if ($target eq 'web') { 3704: $currentstring = $token->[4]; 3705: } 3706: return $currentstring; 3707: } 3708: 3709: sub end_span { 3710: my ($target,$token) = @_; 3711: my $currentstring = ''; 3712: if ($target eq 'web') { 3713: $currentstring = $token->[2]; 3714: } 3715: return $currentstring; 3716: } 3717: 3718: #-- <tbody> tag (end tag optional) 3719: sub start_tbody { 3720: my ($target,$token) = @_; 3721: my $currentstring = ''; 3722: if ($target eq 'web') { 3723: $currentstring = $token->[4]; 3724: } 3725: return $currentstring; 3726: } 3727: 3728: sub end_tbody { 3729: my ($target,$token) = @_; 3730: my $currentstring = ''; 3731: if ($target eq 'web') { 3732: $currentstring = $token->[2]; 3733: } 3734: return $currentstring; 3735: } 3736: 3737: #-- <tfoot> tag (end tag optional) 3738: sub start_tfoot { 3739: my ($target,$token) = @_; 3740: my $currentstring = ''; 3741: if ($target eq 'web') { 3742: $currentstring = $token->[4]; 3743: } 3744: return $currentstring; 3745: } 3746: 3747: sub end_tfoot { 3748: my ($target,$token) = @_; 3749: my $currentstring = ''; 3750: if ($target eq 'web') { 3751: $currentstring = $token->[2]; 3752: } 3753: return $currentstring; 3754: } 3755: 3756: #-- <thead> tag (end tag optional) 3757: sub start_thead { 3758: my ($target,$token) = @_; 3759: my $currentstring = ''; 3760: if ($target eq 'web') { 3761: $currentstring = $token->[4]; 3762: } 3763: return $currentstring; 3764: } 3765: 3766: sub end_thead { 3767: my ($target,$token) = @_; 3768: my $currentstring = ''; 3769: if ($target eq 'web') { 3770: $currentstring = $token->[2]; 3771: } 3772: return $currentstring; 3773: } 3774: 3775: #-- <var> tag 3776: sub start_var { 3777: my ($target,$token) = @_; 3778: my $currentstring = ''; 3779: if ($target eq 'web') { 3780: $currentstring = $token->[4]; 3781: } elsif ($target eq 'tex') { 3782: $currentstring = '\textit{'; 3783: } 3784: return $currentstring; 3785: } 3786: 3787: sub end_var { 3788: my ($target,$token) = @_; 3789: my $currentstring = ''; 3790: if ($target eq 'web') { 3791: $currentstring = $token->[2]; 3792: } elsif ($target eq 'tex') { 3793: $currentstring = '}'; 3794: } 3795: return $currentstring; 3796: } 3797: 3798: #-- <wbr> tag (end tag forbidden) 3799: sub start_wbr { 3800: my ($target,$token) = @_; 3801: my $currentstring = ''; 3802: if ($target eq 'web') { 3803: $currentstring = $token->[4]; 3804: } 3805: return $currentstring; 3806: } 3807: 3808: sub end_wbr { 3809: my ($target,$token) = @_; 3810: my $currentstring = ''; 3811: if ($target eq 'web') { 3812: $currentstring = $token->[2]; 3813: } 3814: return $currentstring; 3815: } 3816: 3817: #-- <hideweboutput> tag 3818: sub start_hideweboutput { 3819: my ($target,$token) = @_; 3820: if ($target eq 'web') { 3821: &Apache::lonxml::startredirection(); 3822: } 3823: return ''; 3824: } 3825: 3826: sub end_hideweboutput { 3827: my ($target,$token) = @_; 3828: my $currentstring = ''; 3829: if ($target eq 'web') { 3830: $currentstring = &Apache::lonxml::endredirection(); 3831: } 3832: return ''; 3833: } 3834: 3835: 3836: sub image_replication { 3837: my $src = shift; 3838: if (not -e $src) { &Apache::lonnet::repcopy($src); } 3839: #replicates eps or ps 3840: my $epssrc = my $pssrc = $src; 3841: $epssrc =~ s/\.(gif|jpg|jpeg|png)$/.eps/i; 3842: $pssrc =~ s/\.(gif|jpg|jpeg|png)$/.ps/i; 3843: if (not -e $epssrc && not -e $pssrc) { 3844: my $result=&Apache::lonnet::repcopy($epssrc); 3845: if ($result ne 'ok') { &Apache::lonnet::repcopy($pssrc); } 3846: } 3847: return ''; 3848: } 3849: # 3850: # Get correct sizing parameter for an image given 3851: # it's initial ht. and wid. This allows sizing of 3852: # images that are generated on-the-fly (e.g. gnuplot) 3853: # as well as serving as a utility for image_size. 3854: # 3855: # Parameter: 3856: # height_param 3857: # width_param - Initial picture dimensions. 3858: # scaling - A scale factor. 3859: # parstack, - the current stack of tag attributes 3860: # from the xml parser 3861: # safeeval, - pointer to the safespace 3862: # depth, - from what level in the stack to look for attributes 3863: # (assumes -1 if unspecified) 3864: # cis - look for attrubutes case insensitively 3865: # (assumes false) 3866: # 3867: # Returns: 3868: # height, width - new dimensions. 3869: # 3870: sub resize_image { 3871: my ($height_param, $width_param, $scaling, 3872: $parstack, $safeeval, $depth, $cis) = @_; 3873: 3874: # First apply the scaling... 3875: 3876: $height_param = $height_param * $scaling; 3877: $width_param = $width_param * $scaling; 3878: 3879: #do we have any specified LaTeX size of the picture? 3880: my $toget='TeXwidth'; 3881: if ($cis) { 3882: $toget=lc($toget); 3883: } 3884: my $TeXwidth = &Apache::lonxml::get_param($toget,$parstack, 3885: $safeeval,$depth,$cis); 3886: $toget='TeXheight'; if ($cis) { $toget=lc($toget); } 3887: my $TeXheight = &Apache::lonxml::get_param($toget,$parstack, 3888: $safeeval,$depth,$cis); 3889: #do we have any specified web size of the picture? 3890: my $width = &Apache::lonxml::get_param('width',$parstack,$safeeval, 3891: $depth,1); 3892: if ($TeXwidth) { 3893: my $old_width_param=$width_param; 3894: if ($TeXwidth=~/(\d+)\s*\%/) { 3895: $width_param = $1*$env{'form.textwidth'}/100; 3896: } else { 3897: $width_param = $TeXwidth; 3898: } 3899: if ($TeXheight) { 3900: $height_param = $TeXheight; 3901: } elsif ($old_width_param) { 3902: $height_param=$TeXwidth/$old_width_param*$height_param; 3903: } 3904: } elsif ($TeXheight) { 3905: $height_param = $TeXheight; 3906: if ($height_param) { 3907: $width_param = $TeXheight/$height_param*$width_param; 3908: } 3909: } elsif ($width) { 3910: my $old_width_param=$width_param; 3911: $width_param = $width*$scaling; 3912: if ($old_width_param) { 3913: $height_param=$width_param/$old_width_param*$height_param; 3914: } 3915: } 3916: if ($width_param > $env{'form.textwidth'}) { 3917: my $old_width_param=$width_param; 3918: $width_param =0.95*$env{'form.textwidth'}; 3919: if ($old_width_param) { 3920: $height_param=$width_param/$old_width_param*$height_param; 3921: } 3922: } 3923: 3924: return ($height_param, $width_param); 3925: } 3926: 3927: sub image_size { 3928: my ($src,$scaling,$parstack,$safeeval,$depth,$cis)=@_; 3929: 3930: #size of image from gif/jpg/jpeg/png 3931: my $ressrc=&Apache::lonnet::filelocation($Apache::lonxml::pwd[-1],$src); 3932: if (-e $ressrc) { 3933: $src = $ressrc; 3934: } 3935: my $image = Image::Magick->new; 3936: my $current_figure = $image->Read($src); 3937: my $width_param = $image->Get('width'); 3938: my $height_param = $image->Get('height'); 3939: &Apache::lonxml::debug("Image magick says: $src : Height = $height_param width = $width_param"); 3940: undef($image); 3941: 3942: ($height_param, $width_param) = &resize_image($height_param, $width_param, 3943: $scaling, $parstack, $safeeval, 3944: $depth, $cis); 3945: 3946: return ($height_param, $width_param); 3947: } 3948: 3949: sub image_width { 3950: my ($height, $width) = &image_size(@_); 3951: return $width; 3952: } 3953: # Not yet 100% sure this is correct in all circumstances.. 3954: # due to my uncertainty about mods to image_size. 3955: # 3956: sub image_height { 3957: my ($height, $width) = &image_size(@_); 3958: return $height; 3959: } 3960: 3961: sub get_eps_image { 3962: my ($src)=@_; 3963: my $orig_src=&Apache::lonnet::filelocation($Apache::lonxml::pwd[-1], $src); 3964: &Apache::lonxml::debug("get_eps_image: Original image: $orig_src"); 3965: my ($spath, $sname, $sext) = fileparse($src, qr/\.(gif|png|jpg|jpeg)/i); 3966: $src=~s/\.(gif|png|jpg|jpeg)$/\.eps/i; 3967: $src=&Apache::lonnet::filelocation($Apache::lonxml::pwd[-1],$src); 3968: &Apache::lonxml::debug("Filelocation gives: $src"); 3969: if (! -e $src) { 3970: &Apache::lonxml::debug("$src does not exist"); 3971: if (&Apache::lonnet::repcopy($src) ne 'ok' ) { 3972: &Apache::lonxml::debug("Repcopy of $src failed (1)"); 3973: #if replication failed try to find ps file 3974: $src=~s/\.eps$/\.ps/; 3975: &Apache::lonxml::debug("Now looking for $src"); 3976: #if no ps file try to replicate it. 3977: my $didrepcopy = &Apache::lonnet::repcopy($src); 3978: &Apache::lonxml::debug("repcopy of $src ... $didrepcopy"); 3979: if ( (not -e $src) || 3980: ($didrepcopy ne 'ok')) { 3981: &Apache::lonxml::debug("Failed to find or replicate $src"); 3982: 3983: #if replication failed try to produce eps file dynamically 3984: $src=~s/\.ps$/\.eps/; 3985: my $temp_file; 3986: open(FILE,">>/home/httpd/prtspool/$env{'user.name'}_$env{'user.domain'}_printout.dat"); 3987: my $newsrc=$orig_src; 3988: $newsrc =~ s|(.*)/res/|/home/httpd/html/res/|; 3989: &Apache::lonxml::debug("queueing $newsrc for dynamic eps production."); 3990: print FILE "$newsrc\n"; 3991: close FILE; 3992: $src=~s|/home/httpd/html/res|/home/httpd/prtspool|; 3993: $src=~s|/home/([^/]*)/public_html/|/home/httpd/prtspool/$1/|; 3994: } 3995: } 3996: } 3997: my ($path,$file)=($src=~m|(.*)/([^/]*)$|); 3998: if ($sext ne "") { # Put the ext. back in to uniquify. 3999: $file =~ s/\.eps$/$sext.eps/; 4000: } 4001: &Apache::lonxml::debug("get_eps_image returning: $path / $file<BR />"); 4002: return ($path.'/',$file); 4003: } 4004: 4005: sub eps_generation { 4006: my ($src,$file,$width_param) = @_; 4007: my $filename = "/home/httpd/prtspool/$env{'user.name'}_$env{'user.domain'}_printout.dat"; 4008: my $temp_file = Apache::File->new('>>'.$filename); 4009: print $temp_file "$src\n"; 4010: my $newsrc = $src; 4011: $newsrc =~ s/(\.gif|\.jpg|\.jpeg)$/\.eps/i; 4012: $newsrc=~s/\/home\/httpd\/html\/res//; 4013: $newsrc=~s/\/home\/([^\/]*)\/public_html\//\/$1\//; 4014: $newsrc=~s/\/\.\//\//; 4015: $newsrc=~s/\/([^\/]+)\.(ps|eps)/\//; 4016: if ($newsrc=~/\/home\/httpd\/lonUsers\//) { 4017: $newsrc=~s/\/home\/httpd\/lonUsers//; 4018: $newsrc=~s/\/([^\/]+)\/(\w)\/(\w)\/(\w)\//\/$1\//; 4019: } 4020: if ($newsrc=~/\/userfiles\//) { 4021: return ' \graphicspath{{'.$newsrc.'}}\includegraphics[width='.$width_param.' mm]{'.$file.'} '; 4022: } else { 4023: return ' \graphicspath{{/home/httpd/prtspool'.$newsrc.'}}\includegraphics[width='.$width_param.' mm]{'.$file.'} '; 4024: } 4025: } 4026: 4027: sub file_path { 4028: my $src=shift; 4029: my ($file,$path); 4030: if ($src =~ m!(.*)/([^/]*)$!) { 4031: $file = $2; 4032: $path = $1.'/'; 4033: } 4034: return $file,$path; 4035: } 4036: 4037: sub recalc { 4038: my $argument = shift; 4039: if (not $argument=~/(mm|cm|in|pc|pt)/) {return $argument.' mm';} 4040: $argument=~/\s*(\d+\.?\d*)\s*(mm|cm|in|pc|pt)/; 4041: my $value=$1; 4042: my $units=$2; 4043: if ($units eq 'cm') { 4044: $value*=10; 4045: } elsif ($units eq 'in') { 4046: $value*=25.4; 4047: } elsif ($units eq 'pc') { 4048: $value*=(25.4*12/72.27); 4049: } elsif ($units eq 'pt') { 4050: $value*=(25.4/72.27); 4051: } 4052: return $value.' mm'; 4053: } 4054: 4055: sub LATEX_length { 4056: my $garbage=shift; 4057: $garbage=~s/^\s+$//; 4058: $garbage=~s/^\s+(\S.*)/$1/;#space before 4059: $garbage=~s/(.*\S)\s+$/$1/;#space after 4060: $garbage=~s/(\s)+/$1/;#only one space 4061: $garbage=~s/(\\begin{([^\}]+)}|\\end{([^\}]+)})//g;#remove LaTeX \begin{...} and \end{...} 4062: $garbage=~s/(\$\_\{|\$\_|\$\^{|\$\^|\}\$)//g;#remove $_{,$_,$^{,$^,}$ 4063: $garbage=~s/([^\\])\$/$1/g;#$ 4064: $garbage=~s/(\\ensuremath\{\_\{|\\ensuremath\{\_|\\ensuremath\{\^{|\\ensuremath\{\^|\})//g;#remove \ensuremath{...} 4065: $garbage=~s/(\\alpha|\\beta|\\gamma|\\delta|\\epsilon|\\verepsilon|\\zeta|\\eta|\\theta|\\vartheta|\\iota|\\kappa|\\lambda|\\mu|\\nu|\\xi|\\pi|\\varpi|\\rho|\\varrho|\\sigma|\\varsigma|\\tau|\\upsilon|\\phi|\\varphi|\\chi|\\psi|\\omega|\\Gamma|\\Delta|\\Theta|\\Lambda|\\Xi|\\Pi|\\Sigma|\\Upsilon|\\Phi|\\Psi|\\Omega)/1/g; 4066: $garbage=~s/(\\pm|\\mp|\\times|\\div|\\cdot|\\ast|\\star|\\dagger|\\ddagger|\\amalg|\\cap|\\cup|\\uplus|\\sqcap|\\sqcup|\\vee|\\wedge|\\oplus|\\ominus|\\otimes|\\circ|\\bullet|\\diamond|\\lhd|\\rhd|\\unlhd|\\unrhd|\\oslash|\\odot|\\bigcirc|\\Box|\\Diamond|\\bigtriangleup|\\bigtriangledown|\\triangleleft|\\triangleright|\\setminus|\\wr)/1/g; 4067: $garbage=~s/(\\le|\\ll|\\leq|\\ge|\\geq|\\gg|\\neq|\\doreq|\\sim|\\simeq|\\subset|\\subseteq|\\sqsubset|\\sqsubseteq|\\in|\\vdash|\\models|\\supset|\\supseteq|\\sqsupset|\\sqsupseteq|\\ni|\\dash|\\perp|\\approx|\\cong|\\equiv|\\propto|\\prec|\\preceq|\\parallel|\\asymp|\\smile|\\frown|\\bowtie|\\succ|\\succeq|\\mid)/1/g; 4068: $garbage=~s/(\\not<|\\\\not\\le|\\not\\prec|\\not\\preceq|\\not\\subset|\\not\\subseteq|\\not\\sqsubseteq|\\not\\in|\\not>|\\not\\ge|\\not\\succ|\\notsucceq|\\not\\supset|\\notsupseteq|\\not\\sqsupseteq|\\notin|\\not=|\\not\\equiv|\\not\\sim|\\not\\simeq|\\not\\approx|\\not\\cong|\\not\\asymp)/1/g; 4069: $garbage=~s/(\\leftarrow|\\gets|\\Leftarrow|\\rightarrow|\\to|\\Rightarrow|\\leftrightarrow|\\Leftrightarrow|\\mapsto|\\hookleftarrow|\\leftharpoonup|\\leftkarpoondown|\\rightleftharpoons|\\longleftarrow|\\Longleftarrow|\\longrightarrow|\\Longrightarrow|\\longleftrightarrow|\\Longleftrightarrow|\\longmapsto|\\hookrightarrow|\\rightharpoonup|\\rightharpoondown|\\uparrow|\\Uparrow|\\downarrow|\\Downarrow|\\updownarrow|\\Updownarrow|\\nearrow|\\searrow|\\swarrow|\\nwarrow)/11/g; 4070: $garbage=~s/(\\aleph|\\hbar|\\imath|\\jmath|\\ell|\\wp|\\Re|\\Im|\\mho|\\prime|\\emptyset|\\nabla|\\surd|\\partial|\\top|\\bot|\\vdash|\\dashv|\\forall|\\exists|\\neg|\\flat|\\natural|\\sharp|\\\||\\angle|\\backslash|\\Box|\\Diamond|\\triangle|\\clubsuit|\\diamondsuit|\\heartsuit|\\spadesuit|\\Join|\\infty)/11/g; 4071: $garbage=~s/(\\hat{([^}]+)}|\\check{([^}]+)}|\\dot{([^}]+)}|\\breve{([^}]+)}|\\acute{([^}]+)}|\\ddot{([^}]+)}|\\grave{([^}]+)}|\\tilde{([^}]+)}|\\mathring{([^}]+)}|\\bar{([^}]+)}|\\vec{([^}]+)})/$1/g; 4072: #remove some other LaTeX command 4073: $garbage=~s|\\(\w+)\\|\\|g; 4074: $garbage=~s|\\(\w+)(\s*)|$2|g; 4075: $garbage=~s|\+|11|g; 4076: my $value=length($garbage); 4077: return $value; 4078: } 4079: 4080: 4081: 4082: 4083: 1; 4084: __END__

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