File:  [LON-CAPA] / rat / map.pm
Revision 1.12: download - view: text, annotated - select for diffs
Fri Dec 19 03:49:56 2008 UTC (13 years, 7 months ago) by raeburn
Branches: MAIN
CVS tags: version_2_8_0, version_2_7_99_1, version_2_7_99_0, HEAD
- Regular Expressions for both http and https.

    1: # The LearningOnline Network with CAPA
    2: # routines for modyfing .sequence and .page files
    3: #
    4: # $Id: map.pm,v 1.12 2008/12/19 03:49:56 raeburn Exp $
    5: #
    6: # Copyright Michigan State University Board of Trustees
    7: #
    8: # This file is part of the LearningOnline Network with CAPA (LON-CAPA).
    9: #
   10: # LON-CAPA is free software; you can redistribute it and/or modify
   11: # it under the terms of the GNU General Public License as published by
   12: # the Free Software Foundation; either version 2 of the License, or
   13: # (at your option) any later version.
   14: #
   15: # LON-CAPA is distributed in the hope that it will be useful,
   16: # but WITHOUT ANY WARRANTY; without even the implied warranty of
   17: # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
   18: # GNU General Public License for more details.
   19: #
   20: # You should have received a copy of the GNU General Public License
   21: # along with LON-CAPA; if not, write to the Free Software
   22: # Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
   23: #
   24: # /home/httpd/html/adm/gpl.txt
   25: #
   26: # http://www.lon-capa.org/
   27: #
   28: 
   29: package LONCAPA::map;
   30: use strict;
   31: use HTML::TokeParser;
   32: use HTML::Entities();
   33: use Apache::lonnet;
   34: use Apache::lonlocal;
   35: use File::Copy;
   36: use LONCAPA;
   37: 
   38: use vars qw(@order @resources @resparms @zombies);
   39: 
   40: # Mapread read maps into global arrays @links and @resources, determines status
   41: # sets @order - pointer to resources in right order
   42: # sets @resources - array with the resources with correct idx
   43: #
   44: sub mapread {
   45:     my ($fn)= @_;
   46: 
   47:     my @links;
   48: 
   49:     @resources=('');
   50:     @order=();
   51:     @resparms=();
   52:     @zombies=();
   53: 
   54:     my ($outtext,$errtext)=&loadmap($fn,'');
   55:     if ($errtext) { return ($errtext,2); }
   56: 
   57: # -------------------------------------------------------------------- Read map
   58:     foreach (split(/\<\&\>/,$outtext)) {
   59: 	my ($command,$number,$content)=split(/\<\:\>/,$_);
   60:         if ($command eq 'objcont') {
   61: 	    my ($title,$src,$ext,$type)=split(/\:/,$content);
   62: 	    if ($ext eq 'cond') { next; }
   63: 	    if ($type ne 'zombie') {
   64: 		$resources[$number]=$content;
   65: 	    } else {
   66: 		$zombies[$number]=$content;
   67: 	    }
   68:         }
   69:         if ($command eq 'objlinks') {
   70:             $links[$number]=$content;
   71:         }
   72:         if ($command eq 'objparms') {
   73: 	    if ($resparms[$number]) {
   74: 		$resparms[$number].='&&&'.$content;
   75: 	    } else {
   76: 		$resparms[$number]=$content;
   77: 	    }
   78:         }
   79:     }
   80: # ------------------------------------------------------- Is this a linear map?
   81:     my @starters;
   82:     my @endings;
   83: 
   84:     foreach (@links) {
   85:         if (defined($_)) {
   86: 	    my ($start,$end,$cond)=split(/\:/,$_);
   87:             if ((defined($starters[$start])) || (defined($endings[$end]))) { 
   88: 		return
   89: 		    (&mt('Map has branchings. Use advanced editor.'),1);
   90:             }
   91: 	    $starters[$start]=1;
   92: 	    $endings[$end]=1;
   93: 	    if ($cond) {
   94: 		return
   95: 		    (&mt('Map has conditions. Use advanced editor.'),1);
   96:             }
   97: 	}
   98:     }
   99: 
  100:     for (my $i=1; $i<=$#resources; $i++) {
  101:         if (defined($resources[$i])) {
  102: 	    unless (($starters[$i]) || ($endings[$i])) {
  103:                 return
  104: 		    (&mt('Map has unconnected resources. Use advanced editor.'),1);
  105:             }
  106:         }
  107:     }
  108: # ---------------------------------------------- Did we just read an empty map?
  109:     if ($#resources<1) {
  110:         undef $resources[0];
  111: 	$resources[1]=':::start';
  112:         $resources[2]=':::finish';
  113:     }
  114: # -------------------------------------------------- This is a linear map, sort
  115: 
  116:     my $startidx=0;
  117:     my $endidx=0;
  118:     for (my $i=0; $i<=$#resources; $i++) {
  119:         if (defined($resources[$i])) {
  120:             my ($title,$url,$ext,$type)=split(/\:/,$resources[$i]);
  121: 	    if ($type eq 'start') { $startidx=$i; }
  122:             if ($type eq 'finish') { $endidx=$i; }
  123:         }
  124:     }
  125:     my $k=0;
  126:     my $currentidx=$startidx;
  127:     $order[$k]=$currentidx;
  128:     for (my $i=0; $i<=$#resources; $i++) {
  129:         foreach (@links) {
  130: 	    my ($start,$end)=split(/\:/,$_);
  131:             if ($start==$currentidx) {
  132: 		$currentidx=$end;
  133:                 $k++;
  134:                 $order[$k]=$currentidx;
  135:                 last;
  136:             }
  137:         }
  138:         if ($currentidx==$endidx) { last; }
  139:     }
  140:     return $errtext;
  141: }
  142: 
  143: # ---------------------------------------------- Read a map as well as possible
  144: # Also used by the sequence handler
  145: # Call lonsequence::attemptread to read from resource space
  146: #
  147: sub attemptread {
  148:     my ($fn,$unsorted)=@_;
  149: 
  150:     my @links;
  151:     my @theseres;
  152: 
  153:     my ($outtext,$errtext)=&loadmap($fn,'');
  154:     if ($errtext) { return @theseres }
  155: 
  156: # -------------------------------------------------------------------- Read map
  157:     my ($start,$finish);
  158:     foreach (split(/\<\&\>/,$outtext)) {
  159: 	my ($command,$number,$content)=split(/\<\:\>/,$_);
  160:         if ($command eq 'objcont') {
  161: 	    my ($title,$src,$ext,$type)=split(/\:/,$content);	    
  162: 	    if ($type ne 'zombie' && $ext ne 'cond') {
  163: 		$theseres[$number]=$content;
  164: 	    }
  165: 	    if ($type eq 'start') {
  166: 		$start = $number;
  167: 	    }
  168: 	    if ($type eq 'finish') {
  169: 		$finish = $number;
  170: 	    }
  171:         }
  172:         if ($command eq 'objlinks') {
  173:             $links[$number]=$content;
  174:         }
  175:     }
  176:     if ($unsorted) {
  177: 	return @theseres;
  178:     }
  179: 
  180: # ---------------------------- attempt to flatten the map into a 'sorted' order
  181: 
  182:     my %path_length = ($start => 0);
  183:     my @todo = @links;
  184: 
  185:     while (@todo) {
  186: 	my $link = shift(@todo);
  187: 	next if (!defined($link));
  188: 	my ($from,$to) = split(':',$link);
  189: 	if (!exists($path_length{$from})) {
  190: 	    # don't know how long it takes to get to this link,
  191: 	    # save away to retry
  192: 	    push(@todo,$link);
  193: 	    next;
  194: 	}
  195: 	# already have a length, keep it
  196: 	next if (exists($path_length{$to}));
  197: 	$path_length{$to}=$path_length{$from}+1;
  198:     }
  199:     # invert hash so we have the ids in depth order now
  200:     my @by_depth;
  201:     while (my ($key,$value) = each(%path_length)) {
  202: 	push(@{$by_depth[$value]},$key);
  203:     }
  204:     # reorder resources
  205:     my @outres;
  206:     foreach my $ids_at_depth (@by_depth) {
  207: 	foreach my $id (sort(@{$ids_at_depth})) {
  208: 	    # skip the finish resource
  209: 	    next if ($id == $finish);
  210: 	    push(@outres, $theseres[$id]);
  211: 	}
  212:     }
  213:     # make sure finish is last (in case there are cycles or bypass routes
  214:     # finish can end up with a rather short possible path)
  215:     push(@outres, $theseres[$finish]);
  216:     return @outres;
  217: }
  218: 
  219: # ------------------------------------- Revive zombie idx or get unused number
  220: 
  221: sub getresidx {
  222:     my ($url,$residx)= @_;
  223:     my $max=1+($#resources>$#zombies?$#resources:$#zombies);
  224:     unless ($url) { return $max; }
  225:     for (my $i=0; $i<=$#zombies; $i++) {
  226: 	my ($title,$src,$ext,$type)=split(/\:/,$zombies[$i]);
  227: 	if ($src eq $url) {
  228: 	    if ($residx) {
  229: 		if ($i == $residx) {
  230: 		    undef($zombies[$i]);
  231: 		    return $i;
  232: 		}
  233: 	    } else {
  234: 		undef($zombies[$i]);
  235: 		return $i;
  236: 	    }
  237: 	}
  238:     }
  239:     return $max;
  240: }
  241: 
  242: # --------------------------------------------------------------- Make a zombie
  243: 
  244: sub makezombie {
  245:     my $idx=shift;
  246:     my ($name,$url,$ext)=split(/\:/,$resources[$idx]);
  247:     my $now=time;
  248:     $zombies[$idx]=$name.
  249: 	' [('.$now.','.$env{'user.name'}.','.$env{'user.domain'}.')]:'.
  250: 	$url.':'.$ext.':zombie';
  251: }
  252: 
  253: # ----------------------------------------------------------- Paste into target
  254: # modifies @order, @resources
  255: 
  256: sub pastetarget {
  257:     my ($after,@which)=@_;
  258:     my @insertorder=();
  259:     foreach (@which) {
  260:         if (defined($_)) {
  261: 	    my ($name,$url,$residx)=split(/\=/,$_);
  262:             $name=&unescape($name);
  263:             $url=&unescape($url);
  264:             if ($url) {
  265: 		my $idx=&getresidx($url,$residx);
  266: 		$insertorder[$#insertorder+1]=$idx;
  267: 		my $ext='false';
  268: 		if ($url=~/^https?\:\/\//) { $ext='true'; }
  269: 		$url=~s/\:/\&colon;/g;
  270: 		$name=~s/\:/\&colon;/g;
  271: 		$resources[$idx]=$name.':'.$url.':'.$ext.':normal:res';
  272: 	    }
  273:         }
  274:     }
  275:     my @oldorder=splice(@order,$after);
  276:     @order=(@order,@insertorder,@oldorder);
  277: }
  278: 
  279: # ------------------------------------------------ Get start and finish correct
  280: # modifies @resources
  281: 
  282: sub startfinish {
  283: # Remove all start and finish
  284:     foreach (@order) {
  285: 	my ($name,$url,$ext)=split(/\:/,$resources[$_]);
  286:         if ($url=~/https?\&colon\:\/\//) { $ext='true'; }
  287:         $resources[$_]=$name.':'.$url.':'.$ext.':normal:res';
  288:     }
  289: # Garbage collection
  290:     my $stillchange=1;
  291:     while (($#order>1) && ($stillchange)) {
  292: 	$stillchange=0;
  293: 	for (my $i=0;$i<=$#order;$i++) {
  294: 	    my ($name,$url,$ext)=split(/\:/,$resources[$order[$i]]);
  295: 	    unless ($url) {
  296: # Take out empty resource
  297: 		for (my $j=$i+1;$j<=$#order;$j++) {
  298: 		    $order[$j-1]=$order[$j];
  299: 		}
  300: 		$#order--;
  301: 		$stillchange=1;
  302: 		last;
  303: 	    }
  304: 	}
  305:     }
  306: # Put in a start resource
  307:     my ($name,$url,$ext)=split(/\:/,$resources[$order[0]]);
  308:     $resources[$order[0]]=$name.':'.$url.':'.$ext.':start:res';
  309: # Make sure this has at least start and finish
  310:     if ($#order==0) {
  311: 	$resources[&getresidx()]='::false';
  312: 	$order[1]=$#resources;
  313:     }
  314: # Make the last one a finish resource
  315:     ($name,$url,$ext)=split(/\:/,$resources[$order[$#order]]);
  316:     $resources[$order[$#order]]=$name.':'.$url.':'.$ext.':finish:res';
  317: }
  318: 
  319: # ------------------------------------------------------------------- Store map
  320: 
  321: sub storemap {
  322:     my $realfn=shift;
  323:     my $fn=$realfn;
  324: # unless this is forced to work from the original file, use a temporary file
  325: # instead
  326:     unless (shift) {
  327: 	$fn=$realfn.'.tmp';
  328: 	unless (-e $fn) {
  329: 	    copy($realfn,$fn);
  330: 	}
  331:     }
  332: # store data either into tmp or real file
  333:     &startfinish();
  334:     my $output='graphdef<:>no';
  335:     my $k=1;
  336:     for (my $i=0; $i<=$#order; $i++) {
  337:         if (defined($resources[$order[$i]])) {
  338: 	    $output.='<&>objcont<:>'.$order[$i].'<:>'.$resources[$order[$i]];
  339:         }
  340: 	if (defined($resparms[$order[$i]])) {
  341: 	    foreach (split('&&&',$resparms[$order[$i]])) {
  342: 		if ($_) {
  343: 		    $output.='<&>objparms<:>'.$order[$i].'<:>'.$_;
  344: 		}
  345: 	    }
  346: 	}
  347:         if (defined($order[$i+1])) {
  348: 	    if (defined($resources[$order[$i+1]])) {
  349: 		$output.='<&>objlinks<:>'.$k.'<:>'.
  350: 		    $order[$i].':'.$order[$i+1].':0';
  351: 		$k++;
  352:             }
  353:         }
  354:     }
  355:     for (my $i=0; $i<=$#zombies; $i++) {
  356:         if (defined($zombies[$i])) {
  357: 	    $output.='<&>objcont<:>'.$i.'<:>'.$zombies[$i];
  358:         }
  359:     }
  360:     $output=~s/https?\&colon\;\/\///g;
  361:     $env{'form.output'}=$output;
  362:     return &loadmap($fn,&savemap($fn,''));
  363: }
  364: 
  365: # ------------------------------------------ Store and get parameters in global
  366: 
  367: sub storeparameter {
  368:     my ($to,$name,$value,$ptype)=@_;
  369:     my $newentry='';
  370:     my $nametype='';
  371:     foreach (split('&&&',$resparms[$to])) {
  372: 	my ($thistype,$thisname,$thisvalue)=split('___',$_);
  373: 	if ($thisname) {
  374: 	    unless ($thisname eq $name) {
  375: 		$newentry.=$_.'&&&';
  376: 	    } else {
  377: 		$nametype=$thistype;
  378: 	    }
  379: 	}
  380:     }
  381:     unless ($ptype) { $ptype=$nametype; }
  382:     unless ($ptype) { $ptype='string'; }
  383:     $newentry.=$ptype.'___'.$name.'___'.$value;
  384:     $resparms[$to]=$newentry;
  385: }
  386: 
  387: sub delparameter {
  388:     my ($to,$name)=@_;
  389:     my $newentry='';
  390:     my $nametype='';
  391:     foreach (split('&&&',$resparms[$to])) {
  392: 	my ($thistype,$thisname,$thisvalue)=split('___',$_);
  393: 	if ($thisname) {
  394: 	    unless ($thisname eq $name) {
  395: 		$newentry.=$_.'&&&';
  396: 	    }
  397: 	}
  398:     }
  399:     $resparms[$to]=$newentry;
  400: }
  401: 
  402: sub getparameter {
  403:     my ($to,$name)=@_;
  404:     my $value=undef;
  405:     my $ptype=undef;
  406:     foreach (split('&&&',$resparms[$to])) {
  407: 	my ($thistype,$thisname,$thisvalue)=split('___',$_);
  408: 	if ($thisname eq $name) {
  409: 	    $value=$thisvalue;
  410: 	    $ptype=$thistype;
  411: 	}
  412:     }
  413:     return ($value,$ptype);
  414: }
  415: 
  416: # ------------------------------------------------------------- From RAT to XML
  417: 
  418: sub qtescape {
  419:     my $str=shift;
  420:     $str=~s/\&colon;/\:/g;
  421:     $str=~s/\&\#58\;/\:/g;
  422:     $str=~s/\&\#39\;/\'/g;
  423:     $str=~s/\&\#44\;/\,/g;
  424:     $str=~s/\&\#34\;/\"/g;
  425:     return $str;
  426: }
  427: 
  428: # ------------------------------------------------------------- From XML to RAT
  429: 
  430: sub qtunescape {
  431:     my $str=shift;
  432:     $str=~s/\:/\&colon\;/g;
  433:     $str=~s/\'/\&\#39\;/g;
  434:     $str=~s/\,/\&\#44\;/g;
  435:     $str=~s/\"/\&\#34\;/g;
  436:     return $str;
  437: }
  438: 
  439: # --------------------------------------------------------- Loads map from disk
  440: 
  441: sub loadmap {
  442:     my ($fn,$errtext,$infotext)=@_;
  443:     if ($errtext) { return('',$errtext); }
  444:     my $outstr='';
  445:     my @obj=();
  446:     my @links=();
  447:     my $instr='';
  448:     if ($fn=~/^\/*uploaded\//) {
  449:         $instr=&Apache::lonnet::getfile($fn);
  450:     } elsif (-e $fn) {
  451:         my @content=();
  452:         {
  453: 	    open(my $fh,"<$fn");
  454:             @content=<$fh>;
  455:         }
  456:         $instr=join('',@content);
  457:     }
  458:     if ($instr eq -2) {
  459:         $errtext.='Map not loaded: An error occurred while trying to load the map.';
  460:     } elsif ($instr eq '-1') {
  461: 	# Map doesn't exist 
  462:     } elsif ($instr) {
  463:         my $parser = HTML::TokeParser->new(\$instr);
  464:         my $token;
  465:         my $graphmode=0;
  466: 
  467:         $fn=~/\.(\w+)$/;
  468:         $outstr="mode<:>$1";
  469: 
  470:         while ($token = $parser->get_token) {
  471: 	    if ($token->[0] eq 'S') {
  472:                 if ($token->[1] eq 'map') {
  473: 		    $graphmode=($token->[2]->{'mode'} eq 'rat/graphical');
  474:                 } elsif ($token->[1] eq 'resource') {
  475: # -------------------------------------------------------------------- Resource
  476:                     $outstr.='<&>objcont';
  477:                     if (defined($token->[2]->{'id'})) {
  478: 			$outstr.='<:>'.$token->[2]->{'id'};
  479:                         if ($obj[$token->[2]->{'id'}]==1) {
  480: 			    $errtext.='Error: multiple use of ID '.
  481: 				$token->[2]->{'id'}.'. ';
  482:                         }
  483:                         $obj[$token->[2]->{'id'}]=1; 
  484:                     } else {
  485:                         my $i=1;
  486:                         while (($i<=$#obj) && ($obj[$i]!=0)) { $i++; }
  487:                         $outstr.='<:>'.$i;
  488:                         $obj[$i]=1;
  489:                     }
  490:                     $outstr.='<:>';
  491:                     $outstr.=qtunescape($token->[2]->{'title'}).":";
  492:                     $outstr.=qtunescape($token->[2]->{'src'}).":";
  493:                     if ($token->[2]->{'external'} eq 'true') {
  494:                         $outstr.='true:';
  495:                     } else {
  496:                         $outstr.='false:';
  497:                     }
  498:                     if (defined($token->[2]->{'type'})) {
  499: 			$outstr.=$token->[2]->{'type'}.':';
  500:                     }  else {
  501:                         $outstr.='normal:';
  502:                     }
  503: 		    if ($token->[2]->{'type'} ne 'zombie') {
  504: 			$outstr.='res';
  505: 		    } else {
  506:                         $outstr.='zombie';
  507: 		    }
  508:                 } elsif ($token->[1] eq 'condition') {
  509: # ------------------------------------------------------------------- Condition
  510:                     $outstr.='<&>objcont';
  511:                     if (defined($token->[2]->{'id'})) {
  512: 			$outstr.='<:>'.$token->[2]->{'id'};
  513:                         if ($obj[$token->[2]->{'id'}]==1) {
  514: 			    $errtext.='Error: multiple use of ID '.
  515: 				$token->[2]->{'id'}.'. ';
  516:                         }
  517:                         $obj[$token->[2]->{'id'}]=1; 
  518:                     } else {
  519:                         my $i=1;
  520:                         while (($i<=$#obj) && ($obj[$i]!=0)) { $i++; }
  521:                         $outstr.='<:>'.$i;
  522:                         $obj[$i]=1;
  523:                     }
  524:                     $outstr.='<:>';
  525:                     $outstr.=qtunescape($token->[2]->{'value'}).':';
  526:                     if (defined($token->[2]->{'type'})) {
  527: 			$outstr.=$token->[2]->{'type'}.':';
  528:                     } else {
  529:                         $outstr.='normal:';
  530:                     }
  531:                     $outstr.='cond';
  532:                 } elsif ($token->[1] eq 'link') {
  533: # ----------------------------------------------------------------------- Links
  534:                     $outstr.='<&>objlinks';
  535: 		    
  536: 		    if (defined($token->[2]->{'index'})) {
  537: 			if ($links[$token->[2]->{'index'}]) {
  538: 			    $errtext.='Error: multiple use of link index '.
  539: 				$token->[2]->{'index'}.'. ';
  540: 			}
  541: 			$outstr.='<:>'.$token->[2]->{'index'};
  542: 			$links[$token->[2]->{'index'}]=1;
  543: 		    } else {
  544: 			my $i=1;
  545: 			while (($i<=$#links) && ($links[$i]==1)) { $i++; }
  546: 			$outstr.='<:>'.$i;
  547: 			$links[$i]=1;
  548: 		    }
  549: 		    
  550:                     $outstr.='<:>'.$token->[2]->{'from'}.
  551: 			':'.$token->[2]->{'to'};
  552:                     if (defined($token->[2]->{'condition'})) {
  553: 			$outstr.=':'.$token->[2]->{'condition'};
  554:                     } else {
  555:  			$outstr.=':0';
  556:                     }
  557: # ------------------------------------------------------------------- Parameter
  558:                 } elsif ($token->[1] eq 'param') {
  559:                     $outstr.='<&>objparms<:>'.$token->[2]->{'to'}.'<:>'.
  560: 			$token->[2]->{'type'}.'___'.$token->[2]->{'name'}.
  561: 			'___'.$token->[2]->{'value'};
  562:                 } elsif ($graphmode) {
  563: # --------------------------------------------- All other tags (graphical only)
  564:                     $outstr.='<&>'.$token->[1];
  565:                     if (defined($token->[2]->{'index'})) {
  566: 			$outstr.='<:>'.$token->[2]->{'index'};
  567:                         if ($token->[1] eq 'obj') {
  568: 			    $obj[$token->[2]->{'index'}]=2;
  569:                         }
  570:                     }
  571:                     $outstr.='<:>'.$token->[2]->{'value'};
  572:                 }
  573:             }
  574:         }
  575: 
  576:     } else {
  577:         $errtext.='Map not loaded: The file does not exist. ';
  578:     }
  579:     return($outstr,$errtext,$infotext);
  580: }
  581: 
  582: 
  583: # ----------------------------------------------------------- Saves map to disk
  584: 
  585: sub savemap {
  586:     my ($fn,$errtext)=@_;
  587:     my $infotext='';
  588:     my %alltypes;
  589:     my %allvalues;
  590:     if (($fn=~/\.sequence(\.tmp)*$/) ||
  591:         ($fn=~/\.page(\.tmp)*$/)) {
  592: 	
  593: # ------------------------------------------------------------- Deal with input
  594:         my @tags=split(/<&>/,$env{'form.output'});
  595:         my $outstr='';
  596:         my $graphdef=0;
  597:         if ($tags[0] eq 'graphdef<:>yes') {
  598: 	    $outstr='<map mode="rat/graphical">'."\n";
  599:             $graphdef=1;
  600:         } else {
  601:             $outstr="<map>\n";
  602:         }
  603:         foreach (@tags) {
  604: 	    my @parts=split(/<:>/,$_);
  605: 	    if ($parts[0] eq 'objcont') {
  606: 		my @comp=split(/:/,$parts[$#parts]);
  607: # --------------------------------------------------------------- Logical input
  608: 		if (($comp[$#comp] eq 'res') || ($comp[$#comp] eq 'zombie')) {
  609: 		    $comp[0]=qtescape($comp[0]);
  610: 		    $comp[0] = &HTML::Entities::encode($comp[0],'&<>"');
  611: 		    
  612: 		    $comp[1]=qtescape($comp[1]);
  613: 		    if ($comp[2] eq 'true') {
  614: 			if ($comp[1]!~/^http\:\/\//) {
  615: 			    $comp[1]='http://'.$comp[1];
  616: 			}
  617: 			$comp[1].='" external="true';
  618: 		    } else {
  619: 			if ($comp[1]=~/^https?\:\/\//) {
  620: 			    $comp[1]=~s/^https?\:\/\/[^\/]*\//\//;
  621: 			}
  622: 		    }
  623: 		    $outstr.='<resource id="'.$parts[1].'" src="'
  624: 			.$comp[1].'"';
  625: 		    
  626: 		    if (($comp[3] ne '') && ($comp[3] ne 'normal')) {
  627: 			$outstr.=' type="'.$comp[3].'"';
  628: 		    }
  629: 		    if ($comp[0] ne '') {
  630: 			$outstr.=' title="'.$comp[0].'"';
  631: 		    }
  632: 		    $outstr.=" />\n";
  633: 		} elsif ($comp[$#comp] eq 'cond') {
  634: 		    $outstr.='<condition id="'.$parts[1].'"';
  635: 		    if (($comp[1] ne '') && ($comp[1] ne 'normal')) {
  636: 			$outstr.=' type="'.$comp[1].'"';
  637: 		    }
  638: 		    $outstr.=' value="'.qtescape($comp[0]).'"';
  639: 		    $outstr.=" />\n";
  640: 		}
  641: 	    } elsif ($parts[0] eq 'objlinks') {
  642: 		my @comp=split(/:/,$parts[$#parts]);
  643: 		$outstr.='<link';
  644: 		$outstr.=' from="'.$comp[0].'"';
  645: 		$outstr.=' to="'.$comp[1].'"';
  646: 		if (($comp[2] ne '') && ($comp[2]!=0)) {
  647: 		    $outstr.=' condition="'.$comp[2].'"';
  648: 		}
  649: 		$outstr.=' index="'.$parts[1].'"';
  650: 		$outstr.=" />\n";
  651: 	    } elsif ($parts[0] eq 'objparms') {
  652: 		undef %alltypes;
  653: 		undef %allvalues;
  654: 		foreach (split(/:/,$parts[$#parts])) {
  655: 		    my ($type,$name,$value)=split(/\_\_\_/,$_);
  656: 		    $alltypes{$name}=$type;
  657: 		    $allvalues{$name}=$value;
  658: 		}
  659: 		foreach (keys %allvalues) {
  660: 		    if ($allvalues{$_} ne '') {
  661: 			$outstr.='<param to="'.$parts[1].'" type="'
  662: 			    .$alltypes{$_}.'" name="'.$_
  663: 			    .'" value="'.$allvalues{$_}.'" />'
  664: 			    ."\n";
  665: 		    }
  666: 		}
  667: 	    } elsif (($parts[0] ne '') && ($graphdef)) {
  668: # ------------------------------------------------------------- Graphical input
  669: 		$outstr.='<'.$parts[0];
  670: 		if ($#parts==2) {
  671: 		    $outstr.=' index="'.$parts[1].'"';
  672: 		}
  673: 		$outstr.=' value="'.qtescape($parts[$#parts]).'" />'."\n";
  674: 	    }
  675:         }
  676:         $outstr.="</map>\n";
  677: 	if ($fn=~m{^/*uploaded/($LONCAPA::domain_re)/($LONCAPA::courseid_re)/(.*)$}) {
  678: 	    $env{'form.output'}=$outstr;
  679:             my $result=&Apache::lonnet::finishuserfileupload($2,$1,
  680: 							     'output',$3);
  681: 	    if ($result != m|^/uploaded/|) {
  682: 		$errtext.='Map not saved: A network error occurred when trying to save the map. ';
  683: 	    }
  684:         } else {
  685: 	    if (open(my $fh,">$fn")) {
  686: 		print $fh $outstr;
  687: 		$infotext.="Map saved as $fn. ";
  688: 	    } else {
  689: 		$errtext.='Could not write file '.$fn.'.  Map not saved. ';
  690: 	    }
  691:         }
  692:     } else {
  693: # -------------------------------------------- Cannot write to that file, error
  694:         $errtext.='Map not saved: The specified path does not exist. ';
  695:     }
  696:     return ($errtext,$infotext);
  697: }
  698: 
  699: 1;
  700: __END__

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