Annotation of rat/lonratsrv.pm, revision 1.10
1.1 www 1: # The LearningOnline Network with CAPA
2: # Server for RAT Maps
3: #
4: # (Edit Handler for RAT Maps
5: # (TeX Content Handler
6: #
7: # 05/29/00,05/30 Gerd Kortemeyer)
8: # 7/1 Gerd Kortemeyer)
1.7 www 9: # 7/1,7/3,7/4,7/7,7/8,7/10,7/26,10/2 Gerd Kortemeyer
1.8 harris41 10: # 4/30/2001 Scott Harrison
1.10 ! www 11: # 5/3 Gerd Kortemeyer
1.1 www 12:
13: package Apache::lonratsrv;
14:
15: use strict;
16: use Apache::Constants qw(:common);
1.2 www 17: use Apache::File;
18: use HTML::TokeParser;
19:
20:
1.4 www 21: # ------------------------------------------------------------- From RAT to XML
1.2 www 22:
23: sub qtescape {
24: my $str=shift;
1.4 www 25: $str=~s/\&\#58\;/\:/g;
26: $str=~s/\&\#39\;/\'/g;
27: $str=~s/\&\#44\;/\,/g;
28: $str=~s/\"/\&\#34\;/g;
1.2 www 29: return $str;
30: }
31:
1.4 www 32: # ------------------------------------------------------------- From XML to RAT
1.2 www 33:
1.4 www 34: sub qtunescape {
1.2 www 35: my $str=shift;
1.4 www 36: $str=~s/\:/\&\#58\;/g;
37: $str=~s/\'/\&\#39\;/g;
38: $str=~s/\,/\&\#44\;/g;
39: $str=~s/\"/\&\#34\;/g;
1.2 www 40: return $str;
41: }
42:
43: # --------------------------------------------------------- Loads map from disk
44:
45: sub loadmap {
46: my ($fn,$errtext)=@_;
47: my $outstr='';
48: my @content=();
49: my @obj=();
50: my @links=();
51: if (-e $fn) {
52: {
53: my $fh=Apache::File->new($fn);
54: @content=<$fh>;
55: }
56: my $instr=join('',@content);
57: my $parser = HTML::TokeParser->new(\$instr);
58: my $token;
59: my $graphmode=0;
60:
61: $fn=~/\.(\w+)$/;
62: $outstr="mode<:>$1";
63:
64: while ($token = $parser->get_token) {
65: if ($token->[0] eq 'S') {
66: if ($token->[1] eq 'map') {
67: $graphmode=($token->[2]->{'mode'} eq 'rat/graphical');
68: } elsif ($token->[1] eq 'resource') {
1.3 www 69: # -------------------------------------------------------------------- Resource
70: $outstr.='<&>objcont';
71: if ($token->[2]->{'id'}) {
72: $outstr.='<:>'.$token->[2]->{'id'};
73: if ($obj[$token->[2]->{'id'}]==1) {
74: $errtext.='Error: multiple use of ID '.
75: $token->[2]->{'id'}.'. ';
76: }
77: $obj[$token->[2]->{'id'}]=1;
78: } else {
79: my $i=1;
80: while (($i<=$#obj) && ($obj[$i]!=0)) { $i++; }
81: $outstr.='<:>'.$i;
82: $obj[$i]=1;
83: }
84: $outstr.='<:>';
1.4 www 85: $outstr.=qtunescape($token->[2]->{'title'}).":";
86: $outstr.=qtunescape($token->[2]->{'src'}).":";
87: if ($token->[2]->{'src'}=~/\/\//) {
88: $outstr.='true:';
89: } else {
90: $outstr.='false:';
91: }
92: if ($token->[2]->{'type'}) {
93: $outstr.=$token->[2]->{'type'}.':';
94: } else {
95: $outstr.='normal:';
96: }
97: $outstr.='res';
1.2 www 98: } elsif ($token->[1] eq 'condition') {
1.3 www 99: # ------------------------------------------------------------------- Condition
100: $outstr.='<&>objcont';
101: if ($token->[2]->{'id'}) {
102: $outstr.='<:>'.$token->[2]->{'id'};
103: if ($obj[$token->[2]->{'id'}]==1) {
104: $errtext.='Error: multiple use of ID '.
105: $token->[2]->{'id'}.'. ';
106: }
107: $obj[$token->[2]->{'id'}]=1;
108: } else {
109: my $i=1;
110: while (($i<=$#obj) && ($obj[$i]!=0)) { $i++; }
111: $outstr.='<:>'.$i;
112: $obj[$i]=1;
113: }
114: $outstr.='<:>';
1.4 www 115: $outstr.=qtunescape($token->[2]->{'value'}).':';
116: if ($token->[2]->{'type'}) {
117: $outstr.=$token->[2]->{'type'}.':';
118: } else {
119: $outstr.='normal:';
120: }
121: $outstr.='cond';
1.2 www 122: } elsif ($token->[1] eq 'link') {
1.3 www 123: # ----------------------------------------------------------------------- Links
1.2 www 124: $outstr.='<&>objlinks';
1.7 www 125:
1.3 www 126: if ($token->[2]->{'index'}) {
1.4 www 127: if ($links[$token->[2]->{'index'}]) {
128: $errtext.='Error: multiple use of link index '.
1.3 www 129: $token->[2]->{'index'}.'. ';
1.4 www 130: }
131: $outstr.='<:>'.$token->[2]->{'index'};
132: $links[$token->[2]->{'index'}]=1;
133: } else {
134: my $i=1;
135: while (($i<=$#links) && ($links[$i]==1)) { $i++; }
136: $outstr.='<:>'.$i;
137: $links[$i]=1;
138: }
1.7 www 139:
1.2 www 140: $outstr.='<:>'.$token->[2]->{'from'}.
1.5 www 141: ':'.$token->[2]->{'to'};
1.2 www 142: if ($token->[2]->{'condition'}) {
1.5 www 143: $outstr.=':'.$token->[2]->{'condition'};
1.2 www 144: } else {
1.5 www 145: $outstr.=':0';
1.4 www 146: }
1.2 www 147: } elsif ($graphmode) {
1.3 www 148: # --------------------------------------------- All other tags (graphical only)
149: $outstr.='<&>'.$token->[1];
1.4 www 150: if (defined($token->[2]->{'index'})) {
1.3 www 151: $outstr.='<:>'.$token->[2]->{'index'};
152: if ($token->[1] eq 'obj') {
153: $obj[$token->[2]->{'index'}]=2;
154: }
155: }
156: $outstr.='<:>'.$token->[2]->{'value'};
1.2 www 157: }
158: }
159: }
160:
161: } else {
1.3 www 162: $errtext.='Map not loaded: The file does not exist. ';
1.2 www 163: }
164: return($outstr,$errtext);
165: }
166:
167:
168: # ----------------------------------------------------------- Saves map to disk
169:
170: sub savemap {
171: my ($fn,$errtext)=@_;
1.7 www 172: if (($fn=~/\.sequence$/) ||
1.2 www 173: ($fn=~/\.page$/)) {
1.4 www 174:
1.2 www 175: # ------------------------------------------------------------- Deal with input
176: my @tags=split(/<&>/,$ENV{'form.output'});
177: my $outstr='';
178: my $graphdef=0;
179: if ($tags[0] eq 'graphdef<:>yes') {
180: $outstr='<map mode="rat/graphical">'."\n";
181: $graphdef=1;
182: } else {
183: $outstr="<map>\n";
184: }
185: map {
186: my @parts=split(/<:>/,$_);
187: if ($parts[0] eq 'objcont') {
188: my @comp=split(/:/,$parts[$#parts]);
189: # --------------------------------------------------------------- Logical input
190: if ($comp[$#comp] eq 'res') {
1.4 www 191: $comp[0]=qtescape($comp[0]);
192: $comp[1]=qtescape($comp[1]);
1.2 www 193: if ($comp[2] eq 'true') {
194: if ($comp[1]!~/^http\:\/\//) {
195: $comp[1]='http://'.$comp[1];
196: }
197: } else {
198: if ($comp[1]=~/^http\:\/\//) {
199: $comp[1]=~s/^http\:\/\/[^\/]*\//\//;
200: }
201: }
202: $outstr.='<resource id="'.$parts[1].'" src="'
1.4 www 203: .$comp[1].'"';
1.2 www 204:
205: if (($comp[3] ne '') && ($comp[3] ne 'normal')) {
206: $outstr.=' type="'.$comp[3].'"';
207: }
208: if ($comp[0] ne '') {
1.4 www 209: $outstr.=' title="'.$comp[0].'"';
1.2 www 210: }
211: $outstr.="></resource>\n";
212: } elsif ($comp[$#comp] eq 'cond') {
213: $outstr.='<condition id="'.$parts[1].'"';
214: if (($comp[1] ne '') && ($comp[1] ne 'normal')) {
215: $outstr.=' type="'.$comp[1].'"';
216: }
217: $outstr.=' value="'.qtescape($comp[0]).'"';
218: $outstr.="></condition>\n";
219: }
220: } elsif ($parts[0] eq 'objlinks') {
221: my @comp=split(/:/,$parts[$#parts]);
222: $outstr.='<link';
223: $outstr.=' from="'.$comp[0].'"';
224: $outstr.=' to="'.$comp[1].'"';
225: if (($comp[2] ne '') && ($comp[2]!=0)) {
226: $outstr.=' condition="'.$comp[2].'"';
227: }
228: $outstr.=' index="'.$parts[1].'"';
229: $outstr.="></link>\n";
230: } elsif (($parts[0] ne '') && ($graphdef)) {
231: # ------------------------------------------------------------- Graphical input
232: $outstr.='<'.$parts[0];
233: if ($#parts==2) {
234: $outstr.=' index="'.$parts[1].'"';
235: }
236: $outstr.=' value="'.qtescape($parts[$#parts]).'"></'.
237: $parts[0].">\n";
238: }
239: } @tags;
240: $outstr.="</map>\n";
241: {
242: my $fh;
243: if ($fh=Apache::File->new(">$fn")) {
244: print $fh $outstr;
1.3 www 245: $errtext.="Map saved as $fn. ";
1.2 www 246: } else {
1.3 www 247: $errtext.='Could not write file $fn. Map not saved. ';
1.2 www 248: }
249: }
250: } else {
251: # -------------------------------------------- Cannot write to that file, error
1.3 www 252: $errtext.='Map not saved: The specified path does not exist. ';
1.2 www 253: }
254: return $errtext;
255: }
1.1 www 256:
257: # ================================================================ Main Handler
258:
259: sub handler {
260: my $r=shift;
261: $r->content_type('text/html');
262: $r->send_http_header;
263:
264: return OK if $r->header_only;
265:
266: my $url=$r->uri;
1.2 www 267: $url=~/\/(\w+)\/ratserver$/;
268: my $mode=$1;
269:
270: $url=~s/\/loadonly\/ratserver$/\/save\/ratserver/;
271:
272: my $fn=$r->filename;
273: my $errtext='';
274: my $outtext='';
275:
276: if ($mode ne 'loadonly') {
277: $errtext=&savemap($fn,$errtext);
278: }
279: ($outtext,$errtext)=&loadmap($fn,$errtext);
1.1 www 280:
281: $r->print(<<ENDDOCUMENT);
282: <html>
1.8 harris41 283: <body bgcolor="#FFFFFF">
1.2 www 284: <form name=storage method=post action="$url">
285: <input type=hidden name=output value="$outtext">
1.1 www 286: </form>
1.8 harris41 287: <script>
1.9 harris41 288: parent.flag=1;
1.8 harris41 289: </script>
1.2 www 290: ENDDOCUMENT
291: if ($errtext ne '') {
292: $r->print(<<ENDSCRIPT);
293: <script>
294: alert("$errtext");
295: </script>
296: ENDSCRIPT
297: }
298: $r->print("</body>\n</html>\n");
1.1 www 299:
300: return OK;
301: }
302:
303: 1;
304: __END__
305:
306:
307:
308:
309:
310:
311:
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