File:  [LON-CAPA] / rat / map.pm
Revision 1.8: download - view: text, annotated - select for diffs
Thu Aug 2 01:47:42 2007 UTC (15 years ago) by albertel
Branches: MAIN
CVS tags: version_2_5_X, version_2_5_2, version_2_5_1, version_2_5_0, version_2_4_99_0, HEAD
- neccearry bits for proper editing or restoring of deleted resources

    1: # The LearningOnline Network with CAPA
    2: # routines for modyfing .sequence and .page files
    3: #
    4: # $Id: map.pm,v 1.8 2007/08/02 01:47:42 albertel Exp $
    5: #
    6: # Copyright Michigan State University Board of Trustees
    7: #
    8: # This file is part of the LearningOnline Network with CAPA (LON-CAPA).
    9: #
   10: # LON-CAPA is free software; you can redistribute it and/or modify
   11: # it under the terms of the GNU General Public License as published by
   12: # the Free Software Foundation; either version 2 of the License, or
   13: # (at your option) any later version.
   14: #
   15: # LON-CAPA is distributed in the hope that it will be useful,
   16: # but WITHOUT ANY WARRANTY; without even the implied warranty of
   17: # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
   18: # GNU General Public License for more details.
   19: #
   20: # You should have received a copy of the GNU General Public License
   21: # along with LON-CAPA; if not, write to the Free Software
   22: # Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
   23: #
   24: # /home/httpd/html/adm/gpl.txt
   25: #
   26: # http://www.lon-capa.org/
   27: #
   28: 
   29: package LONCAPA::map;
   30: 
   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 $fn=shift;
  149: 
  150:     my @links;
  151:     my @theseres;
  152: 
  153:     my ($outtext,$errtext)=&loadmap($fn,'');
  154:     if ($errtext) { return @theseres }
  155: 
  156: # -------------------------------------------------------------------- Read map
  157:     foreach (split(/\<\&\>/,$outtext)) {
  158: 	my ($command,$number,$content)=split(/\<\:\>/,$_);
  159:         if ($command eq 'objcont') {
  160: 	    my ($title,$src,$ext,$type)=split(/\:/,$content);
  161: 	    unless ($type eq 'zombie') {
  162: 		$theseres[$number]=$content;
  163: 	    }
  164:         }
  165:         if ($command eq 'objlinks') {
  166:             $links[$number]=$content;
  167:         }
  168:     }
  169: 
  170: # --------------------------------------------------------------- Sort, sort of
  171: 
  172:     my @objsort;
  173: 
  174:     for (my $k=1;$k<=$#theseres;$k++) {
  175: 	if (defined($theseres[$k])) {
  176: 	    $objsort[$#objsort+1]=$k;
  177: 	}
  178:     }
  179: 
  180:     for (my $k=1;$k<=$#links;$k++) {
  181: 	if (defined($links[$k])) {
  182: 	    my @data1=split(/\:/,$links[$k]);
  183: 	    my $kj=-1;
  184: 	    for (my $j=0;$j<=$#objsort;$j++) {
  185: 		if ((split(/\:/,$objsort[$j]))[0]==$data1[0]) {
  186: 		    $kj=$j;
  187: 		}
  188: 	    }
  189: 	    if ($kj!=-1) { $objsort[$kj].=':'.$data1[1]; }
  190: 	}
  191:     }
  192:     for (my $k=0;$k<=$#objsort;$k++) {
  193: 	for (my $j=0;$j<=$#objsort;$j++) {
  194: 	    if ($k!=$j) {
  195: 		my @data1=split(/\:/,$objsort[$k]);
  196: 		my @data2=split(/\:/,$objsort[$j]);
  197: 		my $dol=$#data1+1;
  198: 		my $dtl=$#data2+1;
  199: 		if ($dol+$dtl<1000) {
  200: 		    for (my $kj=1;$kj<$dol;$kj++) {
  201: 			if ($data1[$kj]==$data2[0]) {
  202: 			    for ($ij=1;$ij<$dtl;$ij++) {
  203: 				$data1[$#data1+1]=$data2[$ij];
  204: 			    }
  205: 			}
  206: 		    }
  207: 		    for (my $kj=1;$kj<$dtl;$kj++) {
  208: 			if ($data2[$kj]==$data1[0]) {
  209: 			    for ($ij=1;$ij<$dol;$ij++) {
  210: 				$data2[$#data2+1]=$data1[$ij];
  211: 			    }
  212: 			}
  213: 		    }
  214: 		    $objsort[$k]=join(':',@data1);
  215: 		    $objsort[$j]=join(':',@data2);
  216: 		}
  217: 	    }
  218: 	} 
  219:     }
  220: # ---------------------------------------------------------------- Now sort out
  221: 
  222:     @objsort=sort {
  223: 	my @data1=split(/\:/,$a);
  224: 	my @data2=split(/\:/,$b);
  225: 	my $rvalue=0;
  226: 	for (my $k=1;$k<=$#data1;$k++) {
  227: 	    if ($data1[$k]==$data2[0]) { $rvalue--; }
  228: 	}
  229: 	for (my $k=1;$k<=$#data2;$k++) {
  230: 	    if ($data2[$k]==$data1[0]) { $rvalue++; }
  231: 	}
  232: 	if ($rvalue==0) { $rvalue=$#data2-$#data1; }
  233: 	$rvalue;
  234:     } @objsort;
  235: 
  236:     my @outres;
  237: 
  238:     for ($k=0;$k<=$#objsort;$k++) {
  239: 	$outres[$k]=$theseres[(split(/\:/,$objsort[$k]))[0]];
  240:     }
  241: 
  242:     return @outres;
  243: }
  244: 
  245: # ------------------------------------- Revive zombie idx or get unused number
  246: 
  247: sub getresidx {
  248:     my ($url,$residx)= @_;
  249:     my $max=1+($#resources>$#zombies?$#resources:$#zombies);
  250:     unless ($url) { return $max; }
  251:     for (my $i=0; $i<=$#zombies; $i++) {
  252: 	my ($title,$src,$ext,$type)=split(/\:/,$zombies[$i]);
  253: 	if ($src eq $url) {
  254: 	    if ($residx) {
  255: 		if ($i == $residx) {
  256: 		    undef($zombies[$i]);
  257: 		    return $i;
  258: 		}
  259: 	    } else {
  260: 		undef($zombies[$i]);
  261: 		return $i;
  262: 	    }
  263: 	}
  264:     }
  265:     return $max;
  266: }
  267: 
  268: # --------------------------------------------------------------- Make a zombie
  269: 
  270: sub makezombie {
  271:     my $idx=shift;
  272:     my ($name,$url,$ext)=split(/\:/,$resources[$idx]);
  273:     my $now=time;
  274:     $zombies[$idx]=$name.
  275: 	' [('.$now.','.$env{'user.name'}.','.$env{'user.domain'}.')]:'.
  276: 	$url.':'.$ext.':zombie';
  277: }
  278: 
  279: # ----------------------------------------------------------- Paste into target
  280: # modifies @order, @resources
  281: 
  282: sub pastetarget {
  283:     my ($after,@which)=@_;
  284:     my @insertorder=();
  285:     foreach (@which) {
  286:         if (defined($_)) {
  287: 	    my ($name,$url,$residx)=split(/\=/,$_);
  288:             $name=&unescape($name);
  289:             $url=&unescape($url);
  290:             if ($url) {
  291: 		my $idx=&getresidx($url,$residx);
  292: 		$insertorder[$#insertorder+1]=$idx;
  293: 		my $ext='false';
  294: 		if ($url=~/^http\:\/\//) { $ext='true'; }
  295: 		$url=~s/\:/\&colon;/g;
  296: 		$name=~s/\:/\&colon;/g;
  297: 		$resources[$idx]=$name.':'.$url.':'.$ext.':normal:res';
  298: 	    }
  299:         }
  300:     }
  301:     my @oldorder=splice(@order,$after);
  302:     @order=(@order,@insertorder,@oldorder);
  303: }
  304: 
  305: # ------------------------------------------------ Get start and finish correct
  306: # modifies @resources
  307: 
  308: sub startfinish {
  309: # Remove all start and finish
  310:     foreach (@order) {
  311: 	my ($name,$url,$ext)=split(/\:/,$resources[$_]);
  312:         if ($url=~/http\&colon\:\/\//) { $ext='true'; }
  313:         $resources[$_]=$name.':'.$url.':'.$ext.':normal:res';
  314:     }
  315: # Garbage collection
  316:     my $stillchange=1;
  317:     while (($#order>1) && ($stillchange)) {
  318: 	$stillchange=0;
  319: 	for (my $i=0;$i<=$#order;$i++) {
  320: 	    my ($name,$url,$ext)=split(/\:/,$resources[$order[$i]]);
  321: 	    unless ($url) {
  322: # Take out empty resource
  323: 		for (my $j=$i+1;$j<=$#order;$j++) {
  324: 		    $order[$j-1]=$order[$j];
  325: 		}
  326: 		$#order--;
  327: 		$stillchange=1;
  328: 		last;
  329: 	    }
  330: 	}
  331:     }
  332: # Put in a start resource
  333:     my ($name,$url,$ext)=split(/\:/,$resources[$order[0]]);
  334:     $resources[$order[0]]=$name.':'.$url.':'.$ext.':start:res';
  335: # Make sure this has at least start and finish
  336:     if ($#order==0) {
  337: 	$resources[&getresidx()]='::false';
  338: 	$order[1]=$#resources;
  339:     }
  340: # Make the last one a finish resource
  341:     ($name,$url,$ext)=split(/\:/,$resources[$order[$#order]]);
  342:     $resources[$order[$#order]]=$name.':'.$url.':'.$ext.':finish:res';
  343: }
  344: 
  345: # ------------------------------------------------------------------- Store map
  346: 
  347: sub storemap {
  348:     my $realfn=shift;
  349:     my $fn=$realfn;
  350: # unless this is forced to work from the original file, use a temporary file
  351: # instead
  352:     unless (shift) {
  353: 	$fn=$realfn.'.tmp';
  354: 	unless (-e $fn) {
  355: 	    copy($realfn,$fn);
  356: 	}
  357:     }
  358: # store data either into tmp or real file
  359:     &startfinish();
  360:     my $output='graphdef<:>no';
  361:     my $k=1;
  362:     for (my $i=0; $i<=$#order; $i++) {
  363:         if (defined($resources[$order[$i]])) {
  364: 	    $output.='<&>objcont<:>'.$order[$i].'<:>'.$resources[$order[$i]];
  365:         }
  366: 	if (defined($resparms[$order[$i]])) {
  367: 	    foreach (split('&&&',$resparms[$order[$i]])) {
  368: 		if ($_) {
  369: 		    $output.='<&>objparms<:>'.$order[$i].'<:>'.$_;
  370: 		}
  371: 	    }
  372: 	}
  373:         if (defined($order[$i+1])) {
  374: 	    if (defined($resources[$order[$i+1]])) {
  375: 		$output.='<&>objlinks<:>'.$k.'<:>'.
  376: 		    $order[$i].':'.$order[$i+1].':0';
  377: 		$k++;
  378:             }
  379:         }
  380:     }
  381:     for (my $i=0; $i<=$#zombies; $i++) {
  382:         if (defined($zombies[$i])) {
  383: 	    $output.='<&>objcont<:>'.$i.'<:>'.$zombies[$i];
  384:         }
  385:     }
  386:     $output=~s/http\&colon\;\/\///g;
  387:     $env{'form.output'}=$output;
  388:     return &loadmap($fn,&savemap($fn,''));
  389: }
  390: 
  391: # ------------------------------------------ Store and get parameters in global
  392: 
  393: sub storeparameter {
  394:     my ($to,$name,$value,$ptype)=@_;
  395:     my $newentry='';
  396:     my $nametype='';
  397:     foreach (split('&&&',$resparms[$to])) {
  398: 	my ($thistype,$thisname,$thisvalue)=split('___',$_);
  399: 	if ($thisname) {
  400: 	    unless ($thisname eq $name) {
  401: 		$newentry.=$_.'&&&';
  402: 	    } else {
  403: 		$nametype=$thistype;
  404: 	    }
  405: 	}
  406:     }
  407:     unless ($ptype) { $ptype=$nametype; }
  408:     unless ($ptype) { $ptype='string'; }
  409:     $newentry.=$ptype.'___'.$name.'___'.$value;
  410:     $resparms[$to]=$newentry;
  411: }
  412: 
  413: sub delparameter {
  414:     my ($to,$name)=@_;
  415:     my $newentry='';
  416:     my $nametype='';
  417:     foreach (split('&&&',$resparms[$to])) {
  418: 	my ($thistype,$thisname,$thisvalue)=split('___',$_);
  419: 	if ($thisname) {
  420: 	    unless ($thisname eq $name) {
  421: 		$newentry.=$_.'&&&';
  422: 	    }
  423: 	}
  424:     }
  425:     $resparms[$to]=$newentry;
  426: }
  427: 
  428: sub getparameter {
  429:     my ($to,$name)=@_;
  430:     my $value=undef;
  431:     my $ptype=undef;
  432:     foreach (split('&&&',$resparms[$to])) {
  433: 	my ($thistype,$thisname,$thisvalue)=split('___',$_);
  434: 	if ($thisname eq $name) {
  435: 	    $value=$thisvalue;
  436: 	    $ptype=$thistype;
  437: 	}
  438:     }
  439:     return ($value,$ptype);
  440: }
  441: 
  442: # ------------------------------------------------------------- From RAT to XML
  443: 
  444: sub qtescape {
  445:     my $str=shift;
  446:     $str=~s/\&colon;/\:/g;
  447:     $str=~s/\&\#58\;/\:/g;
  448:     $str=~s/\&\#39\;/\'/g;
  449:     $str=~s/\&\#44\;/\,/g;
  450:     $str=~s/\&\#34\;/\"/g;
  451:     return $str;
  452: }
  453: 
  454: # ------------------------------------------------------------- From XML to RAT
  455: 
  456: sub qtunescape {
  457:     my $str=shift;
  458:     $str=~s/\:/\&colon\;/g;
  459:     $str=~s/\'/\&\#39\;/g;
  460:     $str=~s/\,/\&\#44\;/g;
  461:     $str=~s/\"/\&\#34\;/g;
  462:     return $str;
  463: }
  464: 
  465: # --------------------------------------------------------- Loads map from disk
  466: 
  467: sub loadmap {
  468:     my ($fn,$errtext,$infotext)=@_;
  469:     if ($errtext) { return('',$errtext); }
  470:     my $outstr='';
  471:     my @obj=();
  472:     my @links=();
  473:     my $instr='';
  474:     if ($fn=~/^\/*uploaded\//) {
  475:         $instr=&Apache::lonnet::getfile($fn);
  476:     } elsif (-e $fn) {
  477:         my @content=();
  478:         {
  479: 	    open(my $fh,"<$fn");
  480:             @content=<$fh>;
  481:         }
  482:         $instr=join('',@content);
  483:     }
  484:     if ($instr eq -2) {
  485:         $errtext.='Map not loaded: An error occured while trying to load the map.';
  486:     } elsif ($instr eq '-1') {
  487: 	# Map doesn't exist 
  488:     } elsif ($instr) {
  489:         my $parser = HTML::TokeParser->new(\$instr);
  490:         my $token;
  491:         my $graphmode=0;
  492: 
  493:         $fn=~/\.(\w+)$/;
  494:         $outstr="mode<:>$1";
  495: 
  496:         while ($token = $parser->get_token) {
  497: 	    if ($token->[0] eq 'S') {
  498:                 if ($token->[1] eq 'map') {
  499: 		    $graphmode=($token->[2]->{'mode'} eq 'rat/graphical');
  500:                 } elsif ($token->[1] eq 'resource') {
  501: # -------------------------------------------------------------------- Resource
  502:                     $outstr.='<&>objcont';
  503:                     if (defined($token->[2]->{'id'})) {
  504: 			$outstr.='<:>'.$token->[2]->{'id'};
  505:                         if ($obj[$token->[2]->{'id'}]==1) {
  506: 			    $errtext.='Error: multiple use of ID '.
  507: 				$token->[2]->{'id'}.'. ';
  508:                         }
  509:                         $obj[$token->[2]->{'id'}]=1; 
  510:                     } else {
  511:                         my $i=1;
  512:                         while (($i<=$#obj) && ($obj[$i]!=0)) { $i++; }
  513:                         $outstr.='<:>'.$i;
  514:                         $obj[$i]=1;
  515:                     }
  516:                     $outstr.='<:>';
  517:                     $outstr.=qtunescape($token->[2]->{'title'}).":";
  518:                     $outstr.=qtunescape($token->[2]->{'src'}).":";
  519:                     if ($token->[2]->{'external'} eq 'true') {
  520:                         $outstr.='true:';
  521:                     } else {
  522:                         $outstr.='false:';
  523:                     }
  524:                     if (defined($token->[2]->{'type'})) {
  525: 			$outstr.=$token->[2]->{'type'}.':';
  526:                     }  else {
  527:                         $outstr.='normal:';
  528:                     }
  529: 		    if ($token->[2]->{'type'} ne 'zombie') {
  530: 			$outstr.='res';
  531: 		    } else {
  532:                         $outstr.='zombie';
  533: 		    }
  534:                 } elsif ($token->[1] eq 'condition') {
  535: # ------------------------------------------------------------------- Condition
  536:                     $outstr.='<&>objcont';
  537:                     if (defined($token->[2]->{'id'})) {
  538: 			$outstr.='<:>'.$token->[2]->{'id'};
  539:                         if ($obj[$token->[2]->{'id'}]==1) {
  540: 			    $errtext.='Error: multiple use of ID '.
  541: 				$token->[2]->{'id'}.'. ';
  542:                         }
  543:                         $obj[$token->[2]->{'id'}]=1; 
  544:                     } else {
  545:                         my $i=1;
  546:                         while (($i<=$#obj) && ($obj[$i]!=0)) { $i++; }
  547:                         $outstr.='<:>'.$i;
  548:                         $obj[$i]=1;
  549:                     }
  550:                     $outstr.='<:>';
  551:                     $outstr.=qtunescape($token->[2]->{'value'}).':';
  552:                     if (defined($token->[2]->{'type'})) {
  553: 			$outstr.=$token->[2]->{'type'}.':';
  554:                     } else {
  555:                         $outstr.='normal:';
  556:                     }
  557:                     $outstr.='cond';
  558:                 } elsif ($token->[1] eq 'link') {
  559: # ----------------------------------------------------------------------- Links
  560:                     $outstr.='<&>objlinks';
  561: 		    
  562: 		    if (defined($token->[2]->{'index'})) {
  563: 			if ($links[$token->[2]->{'index'}]) {
  564: 			    $errtext.='Error: multiple use of link index '.
  565: 				$token->[2]->{'index'}.'. ';
  566: 			}
  567: 			$outstr.='<:>'.$token->[2]->{'index'};
  568: 			$links[$token->[2]->{'index'}]=1;
  569: 		    } else {
  570: 			my $i=1;
  571: 			while (($i<=$#links) && ($links[$i]==1)) { $i++; }
  572: 			$outstr.='<:>'.$i;
  573: 			$links[$i]=1;
  574: 		    }
  575: 		    
  576:                     $outstr.='<:>'.$token->[2]->{'from'}.
  577: 			':'.$token->[2]->{'to'};
  578:                     if (defined($token->[2]->{'condition'})) {
  579: 			$outstr.=':'.$token->[2]->{'condition'};
  580:                     } else {
  581:  			$outstr.=':0';
  582:                     }
  583: # ------------------------------------------------------------------- Parameter
  584:                 } elsif ($token->[1] eq 'param') {
  585:                     $outstr.='<&>objparms<:>'.$token->[2]->{'to'}.'<:>'.
  586: 			$token->[2]->{'type'}.'___'.$token->[2]->{'name'}.
  587: 			'___'.$token->[2]->{'value'};
  588:                 } elsif ($graphmode) {
  589: # --------------------------------------------- All other tags (graphical only)
  590:                     $outstr.='<&>'.$token->[1];
  591:                     if (defined($token->[2]->{'index'})) {
  592: 			$outstr.='<:>'.$token->[2]->{'index'};
  593:                         if ($token->[1] eq 'obj') {
  594: 			    $obj[$token->[2]->{'index'}]=2;
  595:                         }
  596:                     }
  597:                     $outstr.='<:>'.$token->[2]->{'value'};
  598:                 }
  599:             }
  600:         }
  601: 
  602:     } else {
  603:         $errtext.='Map not loaded: The file does not exist. ';
  604:     }
  605:     return($outstr,$errtext,$infotext);
  606: }
  607: 
  608: 
  609: # ----------------------------------------------------------- Saves map to disk
  610: 
  611: sub savemap {
  612:     my ($fn,$errtext)=@_;
  613:     my $infotext='';
  614:     my %alltypes;
  615:     my %allvalues;
  616:     if (($fn=~/\.sequence(\.tmp)*$/) ||
  617:         ($fn=~/\.page(\.tmp)*$/)) {
  618: 	
  619: # ------------------------------------------------------------- Deal with input
  620:         my @tags=split(/<&>/,$env{'form.output'});
  621:         my $outstr='';
  622:         my $graphdef=0;
  623:         if ($tags[0] eq 'graphdef<:>yes') {
  624: 	    $outstr='<map mode="rat/graphical">'."\n";
  625:             $graphdef=1;
  626:         } else {
  627:             $outstr="<map>\n";
  628:         }
  629:         foreach (@tags) {
  630: 	    my @parts=split(/<:>/,$_);
  631: 	    if ($parts[0] eq 'objcont') {
  632: 		my @comp=split(/:/,$parts[$#parts]);
  633: # --------------------------------------------------------------- Logical input
  634: 		if (($comp[$#comp] eq 'res') || ($comp[$#comp] eq 'zombie')) {
  635: 		    $comp[0]=qtescape($comp[0]);
  636: 		    $comp[0] = &HTML::Entities::encode($comp[0],'&<>"');
  637: 		    
  638: 		    $comp[1]=qtescape($comp[1]);
  639: 		    if ($comp[2] eq 'true') {
  640: 			if ($comp[1]!~/^http\:\/\//) {
  641: 			    $comp[1]='http://'.$comp[1];
  642: 			}
  643: 			$comp[1].='" external="true';
  644: 		    } else {
  645: 			if ($comp[1]=~/^http\:\/\//) {
  646: 			    $comp[1]=~s/^http\:\/\/[^\/]*\//\//;
  647: 			}
  648: 		    }
  649: 		    $outstr.='<resource id="'.$parts[1].'" src="'
  650: 			.$comp[1].'"';
  651: 		    
  652: 		    if (($comp[3] ne '') && ($comp[3] ne 'normal')) {
  653: 			$outstr.=' type="'.$comp[3].'"';
  654: 		    }
  655: 		    if ($comp[0] ne '') {
  656: 			$outstr.=' title="'.$comp[0].'"';
  657: 		    }
  658: 		    $outstr.=" />\n";
  659: 		} elsif ($comp[$#comp] eq 'cond') {
  660: 		    $outstr.='<condition id="'.$parts[1].'"';
  661: 		    if (($comp[1] ne '') && ($comp[1] ne 'normal')) {
  662: 			$outstr.=' type="'.$comp[1].'"';
  663: 		    }
  664: 		    $outstr.=' value="'.qtescape($comp[0]).'"';
  665: 		    $outstr.=" />\n";
  666: 		}
  667: 	    } elsif ($parts[0] eq 'objlinks') {
  668: 		my @comp=split(/:/,$parts[$#parts]);
  669: 		$outstr.='<link';
  670: 		$outstr.=' from="'.$comp[0].'"';
  671: 		$outstr.=' to="'.$comp[1].'"';
  672: 		if (($comp[2] ne '') && ($comp[2]!=0)) {
  673: 		    $outstr.=' condition="'.$comp[2].'"';
  674: 		}
  675: 		$outstr.=' index="'.$parts[1].'"';
  676: 		$outstr.=" />\n";
  677: 	    } elsif ($parts[0] eq 'objparms') {
  678: 		undef %alltypes;
  679: 		undef %allvalues;
  680: 		foreach (split(/:/,$parts[$#parts])) {
  681: 		    my ($type,$name,$value)=split(/\_\_\_/,$_);
  682: 		    $alltypes{$name}=$type;
  683: 		    $allvalues{$name}=$value;
  684: 		}
  685: 		foreach (keys %allvalues) {
  686: 		    if ($allvalues{$_} ne '') {
  687: 			$outstr.='<param to="'.$parts[1].'" type="'
  688: 			    .$alltypes{$_}.'" name="'.$_
  689: 			    .'" value="'.$allvalues{$_}.'" />'
  690: 			    ."\n";
  691: 		    }
  692: 		}
  693: 	    } elsif (($parts[0] ne '') && ($graphdef)) {
  694: # ------------------------------------------------------------- Graphical input
  695: 		$outstr.='<'.$parts[0];
  696: 		if ($#parts==2) {
  697: 		    $outstr.=' index="'.$parts[1].'"';
  698: 		}
  699: 		$outstr.=' value="'.qtescape($parts[$#parts]).'" />'."\n";
  700: 	    }
  701:         }
  702:         $outstr.="</map>\n";
  703: 	if ($fn=~m{^/*uploaded/($LONCAPA::domain_re)/($LONCAPA::courseid_re)/(.*)$}) {
  704: 	    $env{'form.output'}=$outstr;
  705:             my $result=&Apache::lonnet::finishuserfileupload($2,$1,
  706: 							     'output',$3);
  707: 	    if ($result != m|^/uploaded/|) {
  708: 		$errtext.='Map not saved: A network error occured when trying to save the map. ';
  709: 	    }
  710:         } else {
  711: 	    if (open(my $fh,">$fn")) {
  712: 		print $fh $outstr;
  713: 		$infotext.="Map saved as $fn. ";
  714: 	    } else {
  715: 		$errtext.='Could not write file '.$fn.'.  Map not saved. ';
  716: 	    }
  717:         }
  718:     } else {
  719: # -------------------------------------------- Cannot write to that file, error
  720:         $errtext.='Map not saved: The specified path does not exist. ';
  721:     }
  722:     return ($errtext,$infotext);
  723: }
  724: 
  725: 1;
  726: __END__

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