Annotation of rat/lonratsrv.pm, revision 1.18
1.1 www 1: # The LearningOnline Network with CAPA
2: # Server for RAT Maps
3: #
1.18 ! www 4: # $Id: lonratsrv.pm,v 1.17 2002/04/03 15:30:13 matthew Exp $
1.16 www 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: #
1.1 www 28: # (Edit Handler for RAT Maps
29: # (TeX Content Handler
30: #
31: # 05/29/00,05/30 Gerd Kortemeyer)
32: # 7/1 Gerd Kortemeyer)
1.7 www 33: # 7/1,7/3,7/4,7/7,7/8,7/10,7/26,10/2 Gerd Kortemeyer
1.8 harris41 34: # 4/30/2001 Scott Harrison
1.15 www 35: # 5/3,06/25,07/03,07/04,07/05 Gerd Kortemeyer
1.1 www 36:
37: package Apache::lonratsrv;
38:
39: use strict;
40: use Apache::Constants qw(:common);
1.2 www 41: use Apache::File;
42: use HTML::TokeParser;
43:
44:
1.4 www 45: # ------------------------------------------------------------- From RAT to XML
1.2 www 46:
47: sub qtescape {
48: my $str=shift;
1.4 www 49: $str=~s/\&\#58\;/\:/g;
50: $str=~s/\&\#39\;/\'/g;
51: $str=~s/\&\#44\;/\,/g;
1.15 www 52: $str=~s/\"/\&\#34\;/g;
1.2 www 53: return $str;
54: }
55:
1.4 www 56: # ------------------------------------------------------------- From XML to RAT
1.2 www 57:
1.4 www 58: sub qtunescape {
1.2 www 59: my $str=shift;
1.14 www 60: $str=~s/\:/\&colon\;/g;
1.4 www 61: $str=~s/\'/\&\#39\;/g;
62: $str=~s/\,/\&\#44\;/g;
63: $str=~s/\"/\&\#34\;/g;
1.2 www 64: return $str;
65: }
66:
67: # --------------------------------------------------------- Loads map from disk
68:
69: sub loadmap {
70: my ($fn,$errtext)=@_;
71: my $outstr='';
72: my @content=();
73: my @obj=();
74: my @links=();
75: if (-e $fn) {
76: {
77: my $fh=Apache::File->new($fn);
78: @content=<$fh>;
79: }
80: my $instr=join('',@content);
81: my $parser = HTML::TokeParser->new(\$instr);
82: my $token;
83: my $graphmode=0;
84:
85: $fn=~/\.(\w+)$/;
86: $outstr="mode<:>$1";
87:
88: while ($token = $parser->get_token) {
89: if ($token->[0] eq 'S') {
90: if ($token->[1] eq 'map') {
91: $graphmode=($token->[2]->{'mode'} eq 'rat/graphical');
92: } elsif ($token->[1] eq 'resource') {
1.3 www 93: # -------------------------------------------------------------------- Resource
94: $outstr.='<&>objcont';
95: if ($token->[2]->{'id'}) {
96: $outstr.='<:>'.$token->[2]->{'id'};
97: if ($obj[$token->[2]->{'id'}]==1) {
98: $errtext.='Error: multiple use of ID '.
99: $token->[2]->{'id'}.'. ';
100: }
101: $obj[$token->[2]->{'id'}]=1;
102: } else {
103: my $i=1;
104: while (($i<=$#obj) && ($obj[$i]!=0)) { $i++; }
105: $outstr.='<:>'.$i;
106: $obj[$i]=1;
107: }
108: $outstr.='<:>';
1.4 www 109: $outstr.=qtunescape($token->[2]->{'title'}).":";
110: $outstr.=qtunescape($token->[2]->{'src'}).":";
1.14 www 111: if ($token->[2]->{'external'} eq 'true') {
1.4 www 112: $outstr.='true:';
113: } else {
114: $outstr.='false:';
115: }
116: if ($token->[2]->{'type'}) {
117: $outstr.=$token->[2]->{'type'}.':';
118: } else {
119: $outstr.='normal:';
120: }
121: $outstr.='res';
1.2 www 122: } elsif ($token->[1] eq 'condition') {
1.3 www 123: # ------------------------------------------------------------------- Condition
124: $outstr.='<&>objcont';
125: if ($token->[2]->{'id'}) {
126: $outstr.='<:>'.$token->[2]->{'id'};
127: if ($obj[$token->[2]->{'id'}]==1) {
128: $errtext.='Error: multiple use of ID '.
129: $token->[2]->{'id'}.'. ';
130: }
131: $obj[$token->[2]->{'id'}]=1;
132: } else {
133: my $i=1;
134: while (($i<=$#obj) && ($obj[$i]!=0)) { $i++; }
135: $outstr.='<:>'.$i;
136: $obj[$i]=1;
137: }
138: $outstr.='<:>';
1.4 www 139: $outstr.=qtunescape($token->[2]->{'value'}).':';
140: if ($token->[2]->{'type'}) {
141: $outstr.=$token->[2]->{'type'}.':';
142: } else {
143: $outstr.='normal:';
144: }
145: $outstr.='cond';
1.2 www 146: } elsif ($token->[1] eq 'link') {
1.3 www 147: # ----------------------------------------------------------------------- Links
1.2 www 148: $outstr.='<&>objlinks';
1.7 www 149:
1.3 www 150: if ($token->[2]->{'index'}) {
1.4 www 151: if ($links[$token->[2]->{'index'}]) {
152: $errtext.='Error: multiple use of link index '.
1.3 www 153: $token->[2]->{'index'}.'. ';
1.4 www 154: }
155: $outstr.='<:>'.$token->[2]->{'index'};
156: $links[$token->[2]->{'index'}]=1;
157: } else {
158: my $i=1;
159: while (($i<=$#links) && ($links[$i]==1)) { $i++; }
160: $outstr.='<:>'.$i;
161: $links[$i]=1;
162: }
1.7 www 163:
1.2 www 164: $outstr.='<:>'.$token->[2]->{'from'}.
1.5 www 165: ':'.$token->[2]->{'to'};
1.2 www 166: if ($token->[2]->{'condition'}) {
1.5 www 167: $outstr.=':'.$token->[2]->{'condition'};
1.2 www 168: } else {
1.5 www 169: $outstr.=':0';
1.4 www 170: }
1.11 www 171: # ------------------------------------------------------------------- Parameter
172: } elsif ($token->[1] eq 'param') {
173: $outstr.='<&>objparms<:>'.$token->[2]->{'to'}.'<:>'.
1.13 www 174: $token->[2]->{'type'}.'___'.$token->[2]->{'name'}
1.11 www 175: .'___'.$token->[2]->{'value'};
1.2 www 176: } elsif ($graphmode) {
1.3 www 177: # --------------------------------------------- All other tags (graphical only)
178: $outstr.='<&>'.$token->[1];
1.4 www 179: if (defined($token->[2]->{'index'})) {
1.3 www 180: $outstr.='<:>'.$token->[2]->{'index'};
181: if ($token->[1] eq 'obj') {
182: $obj[$token->[2]->{'index'}]=2;
183: }
184: }
185: $outstr.='<:>'.$token->[2]->{'value'};
1.2 www 186: }
187: }
188: }
189:
190: } else {
1.3 www 191: $errtext.='Map not loaded: The file does not exist. ';
1.2 www 192: }
193: return($outstr,$errtext);
194: }
195:
196:
197: # ----------------------------------------------------------- Saves map to disk
198:
199: sub savemap {
200: my ($fn,$errtext)=@_;
1.13 www 201: my %alltypes;
202: my %allvalues;
1.7 www 203: if (($fn=~/\.sequence$/) ||
1.2 www 204: ($fn=~/\.page$/)) {
1.4 www 205:
1.2 www 206: # ------------------------------------------------------------- Deal with input
207: my @tags=split(/<&>/,$ENV{'form.output'});
208: my $outstr='';
209: my $graphdef=0;
210: if ($tags[0] eq 'graphdef<:>yes') {
211: $outstr='<map mode="rat/graphical">'."\n";
212: $graphdef=1;
213: } else {
214: $outstr="<map>\n";
215: }
216: map {
217: my @parts=split(/<:>/,$_);
218: if ($parts[0] eq 'objcont') {
219: my @comp=split(/:/,$parts[$#parts]);
220: # --------------------------------------------------------------- Logical input
221: if ($comp[$#comp] eq 'res') {
1.4 www 222: $comp[0]=qtescape($comp[0]);
223: $comp[1]=qtescape($comp[1]);
1.2 www 224: if ($comp[2] eq 'true') {
225: if ($comp[1]!~/^http\:\/\//) {
226: $comp[1]='http://'.$comp[1];
227: }
1.14 www 228: $comp[1].='" external="true';
1.2 www 229: } else {
230: if ($comp[1]=~/^http\:\/\//) {
231: $comp[1]=~s/^http\:\/\/[^\/]*\//\//;
232: }
233: }
234: $outstr.='<resource id="'.$parts[1].'" src="'
1.4 www 235: .$comp[1].'"';
1.2 www 236:
237: if (($comp[3] ne '') && ($comp[3] ne 'normal')) {
238: $outstr.=' type="'.$comp[3].'"';
239: }
240: if ($comp[0] ne '') {
1.4 www 241: $outstr.=' title="'.$comp[0].'"';
1.2 www 242: }
243: $outstr.="></resource>\n";
244: } elsif ($comp[$#comp] eq 'cond') {
245: $outstr.='<condition id="'.$parts[1].'"';
246: if (($comp[1] ne '') && ($comp[1] ne 'normal')) {
247: $outstr.=' type="'.$comp[1].'"';
248: }
249: $outstr.=' value="'.qtescape($comp[0]).'"';
250: $outstr.="></condition>\n";
251: }
252: } elsif ($parts[0] eq 'objlinks') {
253: my @comp=split(/:/,$parts[$#parts]);
254: $outstr.='<link';
255: $outstr.=' from="'.$comp[0].'"';
256: $outstr.=' to="'.$comp[1].'"';
257: if (($comp[2] ne '') && ($comp[2]!=0)) {
258: $outstr.=' condition="'.$comp[2].'"';
259: }
260: $outstr.=' index="'.$parts[1].'"';
261: $outstr.="></link>\n";
1.11 www 262: } elsif ($parts[0] eq 'objparms') {
1.13 www 263: undef %alltypes;
264: undef %allvalues;
1.18 ! www 265: foreach (split(/:/,$parts[$#parts])) {
1.11 www 266: my ($type,$name,$value)=split(/\_\_\_/,$_);
1.13 www 267: $alltypes{$name}=$type;
268: $allvalues{$name}=$value;
1.18 ! www 269: }
! 270: foreach (keys %allvalues) {
! 271: if ($allvalues{$_} ne '') {
1.13 www 272: $outstr.='<param to="'.$parts[1].'" type="'
273: .$alltypes{$_}.'" name="'.$_
274: .'" value="'.$allvalues{$_}.'">'
1.12 www 275: ."</param>\n";
1.18 ! www 276: }
! 277: }
1.2 www 278: } elsif (($parts[0] ne '') && ($graphdef)) {
279: # ------------------------------------------------------------- Graphical input
280: $outstr.='<'.$parts[0];
281: if ($#parts==2) {
282: $outstr.=' index="'.$parts[1].'"';
283: }
284: $outstr.=' value="'.qtescape($parts[$#parts]).'"></'.
285: $parts[0].">\n";
286: }
287: } @tags;
288: $outstr.="</map>\n";
289: {
290: my $fh;
291: if ($fh=Apache::File->new(">$fn")) {
292: print $fh $outstr;
1.3 www 293: $errtext.="Map saved as $fn. ";
1.2 www 294: } else {
1.17 matthew 295: $errtext.='Could not write file '.$fn.'. Map not saved. ';
1.2 www 296: }
297: }
298: } else {
299: # -------------------------------------------- Cannot write to that file, error
1.3 www 300: $errtext.='Map not saved: The specified path does not exist. ';
1.2 www 301: }
302: return $errtext;
303: }
1.1 www 304:
305: # ================================================================ Main Handler
306:
307: sub handler {
308: my $r=shift;
309: $r->content_type('text/html');
310: $r->send_http_header;
311:
312: return OK if $r->header_only;
313:
314: my $url=$r->uri;
1.2 www 315: $url=~/\/(\w+)\/ratserver$/;
316: my $mode=$1;
317:
318: $url=~s/\/loadonly\/ratserver$/\/save\/ratserver/;
319:
320: my $fn=$r->filename;
321: my $errtext='';
322: my $outtext='';
323:
324: if ($mode ne 'loadonly') {
325: $errtext=&savemap($fn,$errtext);
326: }
327: ($outtext,$errtext)=&loadmap($fn,$errtext);
1.1 www 328:
329: $r->print(<<ENDDOCUMENT);
330: <html>
1.8 harris41 331: <body bgcolor="#FFFFFF">
1.2 www 332: <form name=storage method=post action="$url">
333: <input type=hidden name=output value="$outtext">
1.1 www 334: </form>
1.8 harris41 335: <script>
1.9 harris41 336: parent.flag=1;
1.8 harris41 337: </script>
1.2 www 338: ENDDOCUMENT
339: if ($errtext ne '') {
340: $r->print(<<ENDSCRIPT);
341: <script>
342: alert("$errtext");
343: </script>
344: ENDSCRIPT
345: }
346: $r->print("</body>\n</html>\n");
1.1 www 347:
348: return OK;
349: }
350:
351: 1;
352: __END__
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