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Cleans up rows of buttons for homework menu
1: # The LearningOnline Network with CAPA 2: # XML Parser Module 3: # 4: # last modified 06/26/00 by Alexander Sakharuk 5: # 11/6 Gerd Kortemeyer 6: # 6/1/1 Gerd Kortemeyer 7: # 2/21,3/13 Guy 8: # 3/29,5/4 Gerd Kortemeyer 9: # 5/10 Scott Harrison 10: # 5/26 Gerd Kortemeyer 11: # 5/27 H. K. Ng 12: # 6/2,6/3,6/8,6/9 Gerd Kortemeyer 13: 14: package Apache::lonxml; 15: use vars 16: qw(@pwd @outputstack $redirection $import @extlinks $metamode $evaluate %insertlist @namespace); 17: use strict; 18: use HTML::TokeParser; 19: use Safe; 20: use Safe::Hole; 21: use Math::Cephes qw(:trigs :hypers :bessels erf erfc); 22: use Opcode; 23: 24: sub register { 25: my $space; 26: my @taglist; 27: my $temptag; 28: ($space,@taglist) = @_; 29: foreach $temptag (@taglist) { 30: $Apache::lonxml::alltags{$temptag}=$space; 31: } 32: } 33: 34: use Apache::Constants qw(:common); 35: use Apache::lontexconvert; 36: use Apache::style; 37: use Apache::run; 38: use Apache::londefdef; 39: use Apache::scripttag; 40: use Apache::edit; 41: use Apache::lonnet; 42: use Apache::File; 43: 44: #================================================== Main subroutine: xmlparse 45: #debugging control, to turn on debugging modify the correct handler 46: $Apache::lonxml::debug=0; 47: 48: #path to the directory containing the file currently being processed 49: @pwd=(); 50: 51: #these two are used for capturing a subset of the output for later processing, 52: #don't touch them directly use &startredirection and &endredirection 53: @outputstack = (); 54: $redirection = 0; 55: 56: #controls wheter the <import> tag actually does 57: $import = 1; 58: @extlinks=(); 59: 60: # meta mode is a bit weird only some output is to be turned off 61: #<output> tag turns metamode off (defined in londefdef.pm) 62: $metamode = 0; 63: 64: # turns on and of run::evaluate actually derefencing var refs 65: $evaluate = 1; 66: 67: # data structure for eidt mode, determines what tags can go into what other tags 68: %insertlist=(); 69: 70: #stores the list of active tag namespaces 71: @namespace=(); 72: 73: sub xmlbegin { 74: my $output=''; 75: if ($ENV{'browser.mathml'}) { 76: $output='<?xml version="1.0"?>' 77: .'<?xml-stylesheet type="text/css" href="/adm/MathML/mathml.css"?>' 78: .'<!DOCTYPE html SYSTEM "/adm/MathML/mathml.dtd" ' 79: .'[<!ENTITY mathns "http://www.w3.org/1998/Math/MathML">]>' 80: .'<html xmlns:math="http://www.w3.org/1998/Math/MathML" ' 81: .'xmlns="http://www.w3.org/TR/REC-html40">'; 82: } else { 83: $output='<html>'; 84: } 85: return $output; 86: } 87: 88: sub xmlend { 89: return '</html>'; 90: } 91: 92: sub fontsettings() { 93: my $headerstring=''; 94: if (($ENV{'browser.os'} eq 'mac') && (!$ENV{'browser.mathml'})) { 95: $headerstring.= 96: '<meta Content-Type="text/html; charset=x-mac-roman">'; 97: } 98: return $headerstring; 99: } 100: 101: sub registerurl { 102: if ($ENV{'REQUEST_URI'}!~/^\/(res\/)*adm\//) { 103: my $hwkadd=''; 104: if ($ENV{'REQUEST_URI'}=~/\.(problem|exam|quiz|assess|survey|form)$/) { 105: if (&Apache::lonnet::allowed('vgr',$ENV{'request.course.id'})) { 106: $hwkadd.=(<<ENDSUBM); 107: menu.switchbutton 108: (7,1,'subm.gif','view sub','missions', 109: 'gocmd("/adm/grades","submission")'); 110: ENDSUBM 111: } 112: if (&Apache::lonnet::allowed('mgr',$ENV{'request.course.id'})) { 113: $hwkadd.=(<<ENDGRDS); 114: menu.switchbutton 115: (7,2,'pgrd.gif','problem','grades', 116: 'gocmd("/adm/grades","viewgrades")'); 117: ENDGRDS 118: } 119: if (&Apache::lonnet::allowed('opa',$ENV{'request.course.id'})) { 120: $hwkadd.=(<<ENDPARM); 121: menu.switchbutton 122: (7,3,'pparm.gif','problem','parms', 123: 'gocmd("/adm/parmset","set")'); 124: ENDPARM 125: } 126: } 127: return (<<ENDREGTHIS); 128: 129: <script language="JavaScript"> 130: // BEGIN LON-CAPA Internal 131: 132: function LONCAPAreg() { 133: menu=window.open("","LONCAPAmenu"); 134: menu.clearTimeout(menu.menucltim); 135: menu.currentURL=window.location.pathname; 136: menu.currentStale=0; 137: menu.clearbut(3,1); 138: menu.switchbutton 139: (8,1,'eval.gif','evaluate','this','gopost("/adm/evaluate",currentURL)'); 140: menu.switchbutton 141: (8,2,'fdbk.gif','feedback','on this','gopost("/adm/feedback",currentURL)'); 142: menu.switchbutton 143: (8,3,'prt.gif','prepare','printout','gopost("/adm/printout",currentURL)'); 144: menu.switchbutton 145: (2,1,'back.gif','backward','','gopost("/adm/flip","back:"+currentURL)'); 146: menu.switchbutton 147: (2,3,'forw.gif','forward','','gopost("/adm/flip","forward:"+currentURL)'); 148: $hwkadd 149: } 150: 151: function LONCAPAstale() { 152: menu=window.open("","LONCAPAmenu"); 153: menu.currentStale=1; 154: menu.switchbutton 155: (3,1,'reload.gif','return','location','go(currentURL)'); 156: menu.menucltim=menu.setTimeout( 157: 'clearbut(2,1);clearbut(2,3);clearbut(7,1);clearbut(7,2);clearbut(7,3);'. 158: 'clearbut(8,1);clearbut(8,2);clearbut(8,3);', 159: 2000); 160: 161: } 162: 163: // END LON-CAPA Internal 164: </script> 165: ENDREGTHIS 166: 167: } else { 168: return (<<ENDDONOTREGTHIS); 169: 170: <script language="JavaScript"> 171: // BEGIN LON-CAPA Internal 172: 173: function LONCAPAreg() { 174: menu=window.open("","LONCAPAmenu"); 175: menu.currentStale=1; 176: menu.clearbut(2,1); 177: menu.clearbut(2,3); 178: menu.clearbut(8,1); 179: menu.clearbut(8,2); 180: menu.clearbut(8,3); 181: if (menu.currentURL) { 182: menu.switchbutton 183: (3,1,'reload.gif','return','location','go(currentURL)'); 184: } else { 185: menu.clearbut(3,1); 186: } 187: } 188: 189: function LONCAPAstale() { 190: } 191: 192: // END LON-CAPA Internal 193: </script> 194: ENDDONOTREGTHIS 195: 196: } 197: } 198: 199: sub loadevents() { 200: return 'LONCAPAreg();'; 201: } 202: 203: sub unloadevents() { 204: return 'LONCAPAstale();'; 205: } 206: 207: sub printalltags { 208: my $temp; 209: foreach $temp (sort keys %Apache::lonxml::alltags) { 210: &Apache::lonxml::debug("$temp -- $Apache::lonxml::alltags{$temp}"); 211: } 212: } 213: 214: sub xmlparse { 215: 216: my ($target,$content_file_string,$safeinit,%style_for_target) = @_; 217: if ($target eq 'meta') { 218: $Apache::lonxml::redirection = 0; 219: $Apache::lonxml::metamode = 1; 220: $Apache::lonxml::evaluate = 1; 221: $Apache::lonxml::import = 0; 222: } elsif ($target eq 'grade') { 223: &startredirection; 224: $Apache::lonxml::metamode = 0; 225: $Apache::lonxml::evaluate = 1; 226: $Apache::lonxml::import = 1; 227: } elsif ($target eq 'modified') { 228: $Apache::lonxml::redirection = 0; 229: $Apache::lonxml::metamode = 0; 230: $Apache::lonxml::evaluate = 0; 231: $Apache::lonxml::import = 0; 232: } else { 233: $Apache::lonxml::redirection = 0; 234: $Apache::lonxml::metamode = 0; 235: $Apache::lonxml::evaluate = 1; 236: $Apache::lonxml::import = 1; 237: } 238: #&printalltags(); 239: my @pars = (); 240: @Apache::lonxml::pwd=(); 241: my $pwd=$ENV{'request.filename'}; 242: $pwd =~ s:/[^/]*$::; 243: &newparser(\@pars,\$content_file_string,$pwd); 244: my $currentstring = ''; 245: my $finaloutput = ''; 246: my $newarg = ''; 247: my $result; 248: 249: my $safeeval = new Safe; 250: my $safehole = new Safe::Hole; 251: &init_safespace($target,$safeeval,$safehole,$safeinit); 252: #-------------------- Redefinition of the target in the case of compound target 253: 254: ($target, my @tenta) = split('&&',$target); 255: 256: my @stack = (); 257: my @parstack = (); 258: &initdepth; 259: my $token; 260: while ( $#pars > -1 ) { 261: while ($token = $pars[$#pars]->get_token) { 262: if (($token->[0] eq 'T') || ($token->[0] eq 'C') || ($token->[0] eq 'D') ) { 263: if ($metamode<1) { $result=$token->[1]; } 264: } elsif ($token->[0] eq 'PI') { 265: if ($metamode<1) { $result=$token->[2]; } 266: } elsif ($token->[0] eq 'S') { 267: # add tag to stack 268: push (@stack,$token->[1]); 269: # add parameters list to another stack 270: push (@parstack,&parstring($token)); 271: &increasedepth($token); 272: if (exists $style_for_target{$token->[1]}) { 273: if ($Apache::lonxml::redirection) { 274: $Apache::lonxml::outputstack['-1'] .= 275: &recurse($style_for_target{$token->[1]},$target,$safeeval, 276: \%style_for_target,@parstack); 277: } else { 278: $finaloutput .= &recurse($style_for_target{$token->[1]},$target, 279: $safeeval,\%style_for_target,@parstack); 280: } 281: } else { 282: $result = &callsub("start_$token->[1]", $target, $token, \@stack, 283: \@parstack, \@pars, $safeeval, \%style_for_target); 284: } 285: } elsif ($token->[0] eq 'E') { 286: #clear out any tags that didn't end 287: while ($token->[1] ne $stack[$#stack] && ($#stack > -1)) { 288: &Apache::lonxml::warning("Unbalanced tags in resource $stack['-1']"); 289: pop @stack;pop @parstack;&decreasedepth($token); 290: } 291: 292: if (exists $style_for_target{'/'."$token->[1]"}) { 293: if ($Apache::lonxml::redirection) { 294: $Apache::lonxml::outputstack['-1'] .= 295: &recurse($style_for_target{'/'."$token->[1]"}, 296: $target,$safeeval,\%style_for_target,@parstack); 297: } else { 298: $finaloutput .= &recurse($style_for_target{'/'."$token->[1]"}, 299: $target,$safeeval,\%style_for_target, 300: @parstack); 301: } 302: 303: } else { 304: $result = &callsub("end_$token->[1]", $target, $token, \@stack, 305: \@parstack, \@pars,$safeeval, \%style_for_target); 306: } 307: } else { 308: &Apache::lonxml::error("Unknown token event :$token->[0]:$token->[1]:"); 309: } 310: #evaluate variable refs in result 311: if ($result ne "") { 312: if ( $#parstack > -1 ) { 313: if ($Apache::lonxml::redirection) { 314: $Apache::lonxml::outputstack['-1'] .= 315: &Apache::run::evaluate($result,$safeeval,$parstack[$#parstack]); 316: } else { 317: $finaloutput .= &Apache::run::evaluate($result,$safeeval, 318: $parstack[$#parstack]); 319: } 320: } else { 321: $finaloutput .= &Apache::run::evaluate($result,$safeeval,''); 322: } 323: $result = ''; 324: } 325: if ($token->[0] eq 'E') { 326: pop @stack;pop @parstack;&decreasedepth($token); 327: } 328: } 329: pop @pars; 330: pop @Apache::lonxml::pwd; 331: } 332: 333: # if ($target eq 'meta') { 334: # $finaloutput.=&endredirection; 335: # } 336: 337: if (($ENV{'QUERY_STRING'}) && ($target eq 'web')) { 338: $finaloutput=&afterburn($finaloutput); 339: } 340: 341: return $finaloutput; 342: } 343: 344: 345: sub recurse { 346: 347: my @innerstack = (); 348: my @innerparstack = (); 349: my ($newarg,$target,$safeeval,$style_for_target,@parstack) = @_; 350: my @pat = (); 351: &newparser(\@pat,\$newarg); 352: my $tokenpat; 353: my $partstring = ''; 354: my $output=''; 355: my $decls=''; 356: while ( $#pat > -1 ) { 357: while ($tokenpat = $pat[$#pat]->get_token) { 358: if (($tokenpat->[0] eq 'T') || ($tokenpat->[0] eq 'C') || ($tokenpat->[0] eq 'D') ) { 359: if ($metamode<1) { $partstring=$tokenpat->[1]; } 360: } elsif ($tokenpat->[0] eq 'PI') { 361: if ($metamode<1) { $partstring=$tokenpat->[2]; } 362: } elsif ($tokenpat->[0] eq 'S') { 363: push (@innerstack,$tokenpat->[1]); 364: push (@innerparstack,&parstring($tokenpat)); 365: &increasedepth($tokenpat); 366: $partstring = &callsub("start_$tokenpat->[1]", $target, $tokenpat, 367: \@innerstack, \@innerparstack, \@pat, 368: $safeeval, $style_for_target); 369: } elsif ($tokenpat->[0] eq 'E') { 370: #clear out any tags that didn't end 371: while ($tokenpat->[1] ne $innerstack[$#innerstack] 372: && ($#innerstack > -1)) { 373: &Apache::lonxml::warning("Unbalanced tags in resource $innerstack['-1']"); 374: pop @innerstack;pop @innerparstack;&decreasedepth($tokenpat); 375: } 376: $partstring = &callsub("end_$tokenpat->[1]", $target, $tokenpat, 377: \@innerstack, \@innerparstack, \@pat, 378: $safeeval, $style_for_target); 379: } else { 380: &Apache::lonxml::error("Unknown token event :$tokenpat->[0]:$tokenpat->[1]:"); 381: } 382: #pass both the variable to the style tag, and the tag we 383: #are processing inside the <definedtag> 384: if ( $partstring ne "" ) { 385: if ( $#parstack > -1 ) { 386: if ( $#innerparstack > -1 ) { 387: $decls= $parstack[$#parstack].$innerparstack[$#innerparstack]; 388: } else { 389: $decls= $parstack[$#parstack]; 390: } 391: } else { 392: if ( $#innerparstack > -1 ) { 393: $decls=$innerparstack[$#innerparstack]; 394: } else { 395: $decls=''; 396: } 397: } 398: $output .= &Apache::run::evaluate($partstring,$safeeval,$decls); 399: $partstring = ''; 400: } 401: if ($tokenpat->[0] eq 'E') { pop @innerstack;pop @innerparstack; 402: &decreasedepth($tokenpat);} 403: } 404: pop @pat; 405: pop @Apache::lonxml::pwd; 406: } 407: return $output; 408: } 409: 410: sub callsub { 411: my ($sub,$target,$token,$tagstack,$parstack,$parser,$safeeval,$style)=@_; 412: my $currentstring=''; 413: my $nodefault; 414: { 415: my $sub1; 416: no strict 'refs'; 417: if ($target eq 'edit' && $token->[0] eq 'S') { 418: $currentstring = &Apache::edit::tag_start($target,$token,$tagstack, 419: $parstack,$parser, 420: $safeeval,$style); 421: } 422: my $tag=$token->[1]; 423: my $space=$Apache::lonxml::alltags{$tag}; 424: if (!$space) { 425: $tag=~tr/A-Z/a-z/; 426: $sub=~tr/A-Z/a-z/; 427: $space=$Apache::lonxml::alltags{$tag} 428: } 429: if ($space) { 430: #&Apache::lonxml::debug("Calling sub $sub in $space $metamode<br />\n"); 431: $sub1="$space\:\:$sub"; 432: $Apache::lonxml::curdepth=join('_',@Apache::lonxml::depthcounter); 433: ($currentstring,$nodefault) = &$sub1($target,$token,$tagstack, 434: $parstack,$parser,$safeeval, 435: $style); 436: } else { 437: #&Apache::lonxml::debug("NOT Calling sub $sub in $space $metamode<br />\n"); 438: if ($metamode <1) { 439: if (defined($token->[4]) && ($metamode < 1)) { 440: $currentstring = $token->[4]; 441: } else { 442: $currentstring = $token->[2]; 443: } 444: } 445: } 446: # &Apache::lonxml::debug("nodefalt:$nodefault:"); 447: if ($currentstring eq '' && $nodefault eq '') { 448: if ($target eq 'edit') { 449: &Apache::lonxml::debug("doing default edit for $token->[1]"); 450: if ($token->[0] eq 'S') { 451: $currentstring = &Apache::edit::tag_start($target,$token); 452: } elsif ($token->[0] eq 'E') { 453: $currentstring = &Apache::edit::tag_end($target,$token); 454: } 455: } elsif ($target eq 'modified') { 456: if ($token->[0] eq 'S') { 457: $currentstring = $token->[4]; 458: $currentstring.=&Apache::edit::handle_insert(); 459: } else { 460: $currentstring = $token->[2]; 461: } 462: } 463: } 464: use strict 'refs'; 465: } 466: return $currentstring; 467: } 468: 469: sub init_safespace { 470: my ($target,$safeeval,$safehole,$safeinit) = @_; 471: $safeeval->permit("entereval"); 472: $safeeval->permit(":base_math"); 473: $safeeval->permit("sort"); 474: $safeeval->deny(":base_io"); 475: $safehole->wrap(\&Apache::lonnet::EXT,$safeeval,'&EXT'); 476: 477: $safehole->wrap(\&Math::Cephes::asin,$safeeval,'&asin'); 478: $safehole->wrap(\&Math::Cephes::acos,$safeeval,'&acos'); 479: $safehole->wrap(\&Math::Cephes::atan,$safeeval,'&atan'); 480: $safehole->wrap(\&Math::Cephes::sinh,$safeeval,'&sinh'); 481: $safehole->wrap(\&Math::Cephes::cosh,$safeeval,'&cosh'); 482: $safehole->wrap(\&Math::Cephes::tanh,$safeeval,'&tanh'); 483: $safehole->wrap(\&Math::Cephes::asinh,$safeeval,'&asinh'); 484: $safehole->wrap(\&Math::Cephes::acosh,$safeeval,'&acosh'); 485: $safehole->wrap(\&Math::Cephes::atanh,$safeeval,'&atanh'); 486: $safehole->wrap(\&Math::Cephes::erf,$safeeval,'&erf'); 487: $safehole->wrap(\&Math::Cephes::erfc,$safeeval,'&erfc'); 488: $safehole->wrap(\&Math::Cephes::j0,$safeeval,'&j0'); 489: $safehole->wrap(\&Math::Cephes::j1,$safeeval,'&j1'); 490: $safehole->wrap(\&Math::Cephes::jn,$safeeval,'&jn'); 491: $safehole->wrap(\&Math::Cephes::jv,$safeeval,'&jv'); 492: $safehole->wrap(\&Math::Cephes::y0,$safeeval,'&y0'); 493: $safehole->wrap(\&Math::Cephes::y1,$safeeval,'&y1'); 494: $safehole->wrap(\&Math::Cephes::yn,$safeeval,'&yn'); 495: $safehole->wrap(\&Math::Cephes::yv,$safeeval,'&yv'); 496: 497: #need to inspect this class of ops 498: # $safeeval->deny(":base_orig"); 499: $safeinit .= ';$external::target='.$target.';'; 500: $safeinit .= ';$external::randomseed='.&Apache::lonnet::rndseed().';'; 501: &Apache::run::run($safeinit,$safeeval); 502: } 503: 504: sub startredirection { 505: $Apache::lonxml::redirection++; 506: push (@Apache::lonxml::outputstack, ''); 507: } 508: 509: sub endredirection { 510: if (!$Apache::lonxml::redirection) { 511: &Apache::lonxml::error("Endredirection was called, before a startredirection, perhaps you have unbalanced tags. Some debuging information:".join ":",caller); 512: return ''; 513: } 514: $Apache::lonxml::redirection--; 515: pop @Apache::lonxml::outputstack; 516: } 517: 518: sub initdepth { 519: @Apache::lonxml::depthcounter=(); 520: $Apache::lonxml::depth=-1; 521: $Apache::lonxml::olddepth=-1; 522: } 523: 524: sub increasedepth { 525: my ($token) = @_; 526: $Apache::lonxml::depth++; 527: $Apache::lonxml::depthcounter[$Apache::lonxml::depth]++; 528: if ($Apache::lonxml::depthcounter[$Apache::lonxml::depth]==1) { 529: $Apache::lonxml::olddepth=$Apache::lonxml::depth; 530: } 531: my $curdepth=join('_',@Apache::lonxml::depthcounter); 532: &Apache::lonxml::debug("s $Apache::lonxml::depth : $Apache::lonxml::olddepth : $curdepth : $token->[1]\n"); 533: #print "<br />s $Apache::lonxml::depth : $Apache::lonxml::olddepth : $curdepth : $token->[1]\n"; 534: } 535: 536: sub decreasedepth { 537: my ($token) = @_; 538: $Apache::lonxml::depth--; 539: if ($Apache::lonxml::depth<$Apache::lonxml::olddepth-1) { 540: $#Apache::lonxml::depthcounter--; 541: $Apache::lonxml::olddepth=$Apache::lonxml::depth+1; 542: } 543: if ( $Apache::lonxml::depth < -1) { 544: &Apache::lonxml::warning("Unbalanced tags in resource"); 545: $Apache::lonxml::depth='-1'; 546: } 547: my $curdepth=join('_',@Apache::lonxml::depthcounter); 548: &Apache::lonxml::debug("e $Apache::lonxml::depth : $Apache::lonxml::olddepth : $token->[1] : $curdepth\n"); 549: #print "<br />e $Apache::lonxml::depth : $Apache::lonxml::olddepth : $token->[1] : $curdepth\n"; 550: } 551: 552: sub get_all_text { 553: 554: my($tag,$pars)= @_; 555: my $depth=0; 556: my $token; 557: my $result=''; 558: if ( $tag =~ m:^/: ) { 559: my $tag=substr($tag,1); 560: # &Apache::lonxml::debug("have:$tag:"); 561: while (($depth >=0) && ($token = $pars->get_token)) { 562: # &Apache::lonxml::debug("e token:$token->[0]:$depth:$token->[1]"); 563: if (($token->[0] eq 'T')||($token->[0] eq 'C')||($token->[0] eq 'D')) { 564: $result.=$token->[1]; 565: } elsif ($token->[0] eq 'PI') { 566: $result.=$token->[2]; 567: } elsif ($token->[0] eq 'S') { 568: if ($token->[1] eq $tag) { $depth++; } 569: $result.=$token->[4]; 570: } elsif ($token->[0] eq 'E') { 571: if ( $token->[1] eq $tag) { $depth--; } 572: #skip sending back the last end tag 573: if ($depth > -1) { $result.=$token->[2]; } else { 574: $pars->unget_token($token); 575: } 576: } 577: } 578: } else { 579: while ($token = $pars->get_token) { 580: # &Apache::lonxml::debug("s token:$token->[0]:$depth:$token->[1]"); 581: if (($token->[0] eq 'T')||($token->[0] eq 'C')||($token->[0] eq 'D')) { 582: $result.=$token->[1]; 583: } elsif ($token->[0] eq 'PI') { 584: $result.=$token->[2]; 585: } elsif ($token->[0] eq 'S') { 586: if ( $token->[1] eq $tag) { 587: $pars->unget_token($token); last; 588: } else { 589: $result.=$token->[4]; 590: } 591: } elsif ($token->[0] eq 'E') { 592: $result.=$token->[2]; 593: } 594: } 595: } 596: # &Apache::lonxml::debug("Exit:$result:"); 597: return $result 598: } 599: 600: sub newparser { 601: my ($parser,$contentref,$dir) = @_; 602: push (@$parser,HTML::TokeParser->new($contentref)); 603: $$parser['-1']->xml_mode('1'); 604: if ( $dir eq '' ) { 605: push (@Apache::lonxml::pwd, $Apache::lonxml::pwd[$#Apache::lonxml::pwd]); 606: } else { 607: push (@Apache::lonxml::pwd, $dir); 608: } 609: # &Apache::lonxml::debug("pwd:$#Apache::lonxml::pwd"); 610: # &Apache::lonxml::debug("pwd:$Apache::lonxml::pwd[$#Apache::lonxml::pwd]"); 611: } 612: 613: sub parstring { 614: my ($token) = @_; 615: my $temp=''; 616: map { 617: unless ($_=~/\W/) { 618: my $val=$token->[2]->{$_}; 619: $val =~ s/([\%\@\\])/\\$1/g; 620: #if ($val =~ m/^[\%\@]/) { $val="\\".$val; } 621: $temp .= "my \$$_=\"$val\";" 622: } 623: } @{$token->[3]}; 624: return $temp; 625: } 626: 627: sub writeallows { 628: my $thisurl='/res/'.&Apache::lonnet::declutter(shift); 629: my $thisdir=$thisurl; 630: $thisdir=~s/\/[^\/]+$//; 631: my %httpref=(); 632: map { 633: $httpref{'httpref.'. 634: &Apache::lonnet::hreflocation($thisdir,$_)}=$thisurl; } @extlinks; 635: &Apache::lonnet::appenv(%httpref); 636: } 637: 638: # 639: # Afterburner handles anchors, highlights and links 640: # 641: sub afterburn { 642: my $result=shift; 643: map { 644: my ($name, $value) = split(/=/,$_); 645: $value =~ tr/+/ /; 646: $value =~ s/%([a-fA-F0-9][a-fA-F0-9])/pack("C",hex($1))/eg; 647: if (($name eq 'highlight')||($name eq 'anchor')||($name eq 'link')) { 648: unless ($ENV{'form.'.$name}) { 649: $ENV{'form.'.$name}=$value; 650: } 651: } 652: } (split(/&/,$ENV{'QUERY_STRING'})); 653: if ($ENV{'form.highlight'}) { 654: map { 655: my $anchorname=$_; 656: my $matchthis=$anchorname; 657: $matchthis=~s/\_+/\\s\+/g; 658: $result=~s/($matchthis)/\<font color=\"red\"\>$1\<\/font\>/gs; 659: } split(/\,/,$ENV{'form.highlight'}); 660: } 661: if ($ENV{'form.link'}) { 662: map { 663: my ($anchorname,$linkurl)=split(/\>/,$_); 664: my $matchthis=$anchorname; 665: $matchthis=~s/\_+/\\s\+/g; 666: $result=~s/($matchthis)/\<a href=\"$linkurl\"\>$1\<\/a\>/gs; 667: } split(/\,/,$ENV{'form.link'}); 668: } 669: if ($ENV{'form.anchor'}) { 670: my $anchorname=$ENV{'form.anchor'}; 671: my $matchthis=$anchorname; 672: $matchthis=~s/\_+/\\s\+/g; 673: $result=~s/($matchthis)/\<a name=\"$anchorname\"\>$1\<\/a\>/s; 674: $result.=(<<"ENDSCRIPT"); 675: <script> 676: document.location.hash='$anchorname'; 677: </script> 678: ENDSCRIPT 679: } 680: return $result; 681: } 682: 683: sub storefile { 684: my ($file,$contents)=@_; 685: if (my $fh=Apache::File->new('>'.$file)) { 686: print $fh $contents; 687: $fh->close(); 688: } 689: } 690: 691: sub inserteditinfo { 692: my ($result,$filecontents)=@_; 693: unless ($filecontents) { 694: $filecontents=(<<SIMPLECONTENT); 695: <html> 696: <head> 697: <title> 698: Title of Document Goes Here 699: </title> 700: </head> 701: <body bgcolor="#FFFFFF"> 702: 703: Body of Document Goes Here 704: 705: </body> 706: </html> 707: SIMPLECONTENT 708: } 709: my $editheader='<a href="#editsection">Edit below</a><hr />'; 710: my $editfooter=(<<ENDFOOTER); 711: <hr /> 712: <a name="editsection" /> 713: <form method="post"> 714: <textarea cols="80" rows="40" name="filecont">$filecontents</textarea> 715: <br /> 716: <input type="submit" name="savethisfile" value="Save this file" /> 717: </form> 718: ENDFOOTER 719: $result=~s/(\<body[^\>]*\>)/$1$editheader/is; 720: $result=~s/(\<\/body\>)/$editfooter/is; 721: return $result; 722: } 723: 724: sub handler { 725: my $request=shift; 726: 727: my $target='web'; 728: 729: $Apache::lonxml::debug=0; 730: 731: if ($ENV{'browser.mathml'}) { 732: $request->content_type('text/xml'); 733: } else { 734: $request->content_type('text/html'); 735: } 736: 737: $request->send_http_header; 738: 739: return OK if $request->header_only; 740: 741: 742: my $file=&Apache::lonnet::filelocation("",$request->uri); 743: # 744: # Edit action? Save file. 745: # 746: unless ($ENV{'request.state'} eq 'published') { 747: if ($ENV{'form.savethisfile'}) { 748: &storefile($file,$ENV{'form.filecont'}); 749: } 750: } 751: my %mystyle; 752: my $result = ''; 753: my $filecontents=&Apache::lonnet::getfile($file); 754: if ($filecontents == -1) { 755: $result=(<<ENDNOTFOUND); 756: <html> 757: <head> 758: <title>File not found</title> 759: </head> 760: <body bgcolor="#FFFFFF"> 761: <b>File not found: $file</b> 762: </body> 763: </html> 764: ENDNOTFOUND 765: $filecontents=''; 766: } else { 767: $result = &Apache::lonxml::xmlparse($target,$filecontents,'',%mystyle); 768: } 769: 770: # 771: # Edit action? Insert editing commands 772: # 773: unless ($ENV{'request.state'} eq 'published') { 774: $result=&inserteditinfo($result,$filecontents); 775: } 776: 777: $request->print($result); 778: 779: writeallows($request->uri); 780: return OK; 781: } 782: 783: sub debug { 784: if ($Apache::lonxml::debug eq 1) { 785: print "DEBUG:".$_[0]."<br />\n"; 786: } 787: } 788: 789: sub error { 790: if (($Apache::lonxml::debug eq 1) || ($ENV{'request.state'} eq 'construct') ) { 791: print "<b>ERROR:</b>".$_[0]."<br />\n"; 792: } else { 793: print "<b>An Error occured while processing this resource. The instructor has been notified.</b> <br />"; 794: #notify author 795: &Apache::lonmsg::author_res_msg($ENV{'request.filename'},$_[0]); 796: #notify course 797: if ( $ENV{'request.course.id'} ) { 798: my $users=$ENV{'course.'.$ENV{'request.course.id'}.'.comment.email'}; 799: foreach my $user (split /\,/, $users) { 800: ($user,my $domain) = split /:/, $user; 801: &Apache::lonmsg::user_normal_msg($user,$domain,"Error in $ENV{'request.filename'}",$_[0]); 802: } 803: } 804: 805: #FIXME probably shouldn't have me get everything forever. 806: &Apache::lonmsg::user_normal_msg('albertel','msu',"Error in $ENV{'request.filename'}",$_[0]); 807: #&Apache::lonmsg::user_normal_msg('albertel','103',"Error in $ENV{'request.filename'}",$_[0]); 808: } 809: } 810: 811: sub warning { 812: if ($ENV{'request.state'} eq 'construct') { 813: print "<b>W</b>ARNING<b>:</b>".$_[0]."<br />\n"; 814: } 815: } 816: 817: sub get_param { 818: my ($param,$parstack,$safeeval,$context) = @_; 819: if ( ! $context ) { $context = -1; } 820: my $args =''; 821: if ( $#$parstack > (-2-$context) ) { $args=$$parstack[$context]; } 822: return &Apache::run::run("{$args;".'return $'.$param.'}',$safeeval); #' 823: } 824: 825: sub register_insert { 826: my @data = split /\n/, &Apache::lonnet::getfile('/home/httpd/lonTabs/insertlist.tab'); 827: my $i; 828: my $tagnum=0; 829: my @order; 830: for ($i=0;$i < $#data; $i++) { 831: my $line = $data[$i]; 832: if ( $line =~ /^\#/ || $line =~ /^\s*\n/) { next; } 833: if ( $line =~ /TABLE/ ) { last; } 834: my ($tag,$descrip,$function,$show) = split(/,/, $line); 835: $insertlist{"$tagnum.tag"} = $tag; 836: $insertlist{"$tagnum.description"} = $descrip; 837: $insertlist{"$tagnum.function"} = $function; 838: $insertlist{"$tagnum.show"}= $show; 839: $tagnum++; 840: } 841: $i++; #skipping TABLE line 842: $tagnum = 0; 843: for (;$i < $#data;$i++) { 844: my $line = $data[$i]; 845: my ($mnemonic,@which) = split(/ +/,$line); 846: my $tag = $insertlist{"$tagnum.tag"}; 847: for (my $j=0;$j <$#which;$j++) { 848: if ( $which[$j] eq 'Y' ) { 849: if ($insertlist{"$j.show"} ne 'no') { 850: push(@{ $insertlist{"$tag.which"} },$j); 851: } 852: } 853: } 854: $tagnum++; 855: } 856: } 857: 1; 858: __END__ 859: 860: