Annotation of loncom/interface/lonrss.pm, revision 1.11
1.1 www 1: # The LearningOnline Network
2: # RSS Feeder
3: #
1.11 ! albertel 4: # $Id: lonrss.pm,v 1.10 2006/03/16 19:56:21 albertel Exp $
1.1 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: #
28:
29: package Apache::lonrss;
30:
31: use strict;
32: use Apache::Constants qw(:common);
33: use Apache::loncommon;
34: use Apache::lonnet;
35: use Apache::lontexconvert;
36: use Apache::lonlocal;
37: use Apache::lonhtmlcommon;
38:
39: sub filterfeedname {
40: my $filename=shift;
1.5 www 41: $filename=~s/(\_rss\.html|\.rss)$//;
1.1 www 42: $filename=~s/\W//g;
43: return $filename;
44: }
45:
46: sub feedname {
47: return 'nohist_'.&filterfeedname(shift).'_rssfeed';
48: }
49:
50: sub displayfeedname {
1.2 www 51: my ($rawname,$uname,$udom)=@_;
52: my $filterfilename=&filterfeedname($rawname);
53: # do we have a stored name?
54: my %stored=&Apache::lonnet::get('nohist_all_rss_feeds',[$filterfilename],$udom,$uname);
55: if ($stored{$filterfilename}) { return $stored{$filterfilename}; }
56: # no, construct a name
57: my $name=$filterfilename;
58: if ($name=~/^CourseBlog/) {
59: $name=&mt('Course Blog');
60: if ($env{'course.'.$env{'request.course.id'}.'.description'}) {
61: $name.=' '.$env{'course.'.$env{'request.course.id'}.'.description'};
62: }
63: } else {
64: $name=~s/\_/ /g;
65: }
66: return $name;
67: }
68:
69: sub renamefeed {
70: my ($rawname,$uname,$udom,$newname)=@_;
71: return &Apache::lonnet::put('nohist_all_rss_feeds',
72: { &filterfeedname($rawname) => $newname },
73: $udom,$uname);
74: }
75:
76: sub advertisefeeds {
1.6 www 77: my ($uname,$udom,$edit)=@_;
1.2 www 78: my $feeds='';
79: my %feednames=&Apache::lonnet::dump('nohist_all_rss_feeds',$udom,$uname);
1.6 www 80: my $mode='public';
81: if ($edit) {
82: $mode='adm';
83: }
1.3 albertel 84: foreach my $feed (sort(keys(%feednames))) {
85: if ($feed!~/^error\:/) {
1.5 www 86: my $feedurl='feed://'.$ENV{'HTTP_HOST'}.'/public/'.$udom.'/'.$uname.'/'.$feed.'.rss';
1.6 www 87: my $htmlurl='http://'.$ENV{'HTTP_HOST'}.'/'.$mode.'/'.$udom.'/'.$uname.'/'.$feed.'_rss.html';
1.5 www 88: $feeds.='<li>'.$feednames{$feed}.
1.6 www 89: '<br />'.($edit?&mt('Edit'):'HTML').': <a href="'.$htmlurl.'"><tt>'.$htmlurl.'</tt></a>'.
90: ($edit?'':'<br />RSS: <a href="'.$feedurl.'"><tt>'.$feedurl.'</tt></a>').'</li>';
1.2 www 91: }
92: }
93: if ($feeds) {
94: return '<h4>'.&mt('Available RSS Feeds and Blogs').'</h4><ul>'.$feeds.'</ul>';
95: } else {
96: return '';
97: }
1.1 www 98: }
99:
1.3 albertel 100: {
101: my $feedcounter;
102: sub addentry {
103: $feedcounter++;
104: my $id=time.'00000'.$$.'00000'.$feedcounter;
105: return &editentry($id,@_);
106: }
1.2 www 107: }
108:
109: sub editentry {
110: my ($id,$uname,$udom,$filename,$title,$description,$url,$status,$encurl,$enclength,$enctype)=@_;
111: my $feedname=&feedname($filename);
112: &Apache::lonnet::put('nohist_all_rss_feeds',
113: { &filterfeedname($filename) => &displayfeedname($filename,$uname,$udom) },
114: $udom,$uname);
1.1 www 115: return &Apache::lonnet::put($feedname,{
116: $id.'_title' => $title,
117: $id.'_description' => $description,
118: $id.'_link' => $url,
119: $id.'_enclosureurl' => $encurl,
120: $id.'_enclosurelength' => $enclength,
121: $id.'_enclosuretype' => $enctype,
122: $id.'_status' => $status},$udom,$uname);
123: }
124:
1.2 www 125: sub changestatus {
126: my ($id,$uname,$udom,$filename,$status)=@_;
127: my $feedname=&feedname($filename);
128: if ($status eq 'deleted') {
129: return &Apache::lonnet::del($feedname,[$id.'_title',
130: $id.'_description',
131: $id.'_link',
132: $id.'_enclosureurl',
133: $id.'_enclosurelength',
134: $id.'_enclosuretype',
135: $id.'_status'],$udom,$uname);
136: } else {
137: return &Apache::lonnet::put($feedname,{$id.'_status' => $status},$udom,$uname);
138: }
139: }
140:
1.8 albertel 141: sub changed_js {
142: return <<ENDSCRIPT;
143: <script type="text/javascript">
144: function changed(tform,id) {
145: tform.elements[id+"_modified"].checked=true;
146: }
147: </script>
1.11 ! albertel 148: ENDSCRIPT
1.8 albertel 149: }
150:
1.1 www 151: sub handler {
1.8 albertel 152: my ($r) = @_;
1.5 www 153:
154: my $edit=0;
155: my $html=0;
156: my (undef,$mode,$udom,$uname,$filename)=split(/\//,$r->uri);
157: if (($mode eq 'adm') && ($env{'user.name'} eq $uname) && ($env{'user.domain'} eq $udom)) {
158: $edit=1;
159: $html=1;
160: }
161: if ($filename=~/\.html$/) {
162: $html=1;
163: }
164: if ($html) {
165: &Apache::loncommon::content_type($r,'text/html');
166: } else {
167: # Workaround Mozilla/Firefox
168: # &Apache::loncommon::content_type($r,'application/rss+xml');
169: &Apache::loncommon::content_type($r,'text/xml');
170: }
1.1 www 171: $r->send_http_header;
172: return OK if $r->header_only;
173:
174: my $filterfeedname=&filterfeedname($filename);
175: my $feedname=&feedname($filename);
1.2 www 176: my $displayfeedname=&displayfeedname($filename,$uname,$udom);
1.5 www 177: if ($html) {
1.8 albertel 178: $r->print(&Apache::lonxml::xmlbegin().
179: &Apache::loncommon::head($displayfeedname).
180: &Apache::loncommon::bodytag($displayfeedname,'','','',$udom,
181: $env{'form.register'}).
182: &changed_js());
183:
1.5 www 184: } else {
185: $r->print("<rss version='2.0' xmlns:dc='http://purl.org/dc/elements/1.1'>\n<channel>".
186: "\n<link>http://".$ENV{'HTTP_HOST'}.'/public/'.$udom.'/'.$uname.'/'.
187: $filterfeedname.'_rss.html</link>'.
188: "\n<description>".
189: &mt('An RSS Feed provided by the LON-CAPA Learning Content Management System').
190: '</description>');
191: }
1.1 www 192: # Is this user for real?
1.6 www 193: my $homeserver=&Apache::lonnet::homeserver($uname,$udom);
194: if ($html) {
195: $r->print(&advertisefeeds($uname,$udom,$edit));
196: }
1.1 www 197: if ($homeserver eq 'no_host') {
1.5 www 198: $r->print(($html?'<h3>':'<title>').&mt('No feed available').($html?'</h3>':'</title>'));
1.1 www 199: } else {
200: # Course or user?
201: my $name='';
202: if ($uname=~/^\d/) {
203: my %cenv=&Apache::lonnet::dump('environment',$udom,$uname);
204: $name=$cenv{'description'};
205: } else {
206: $name=&Apache::loncommon::nickname($uname,$udom);
207: }
1.5 www 208: $r->print("\n".
209: ($html?'<h3>':'<title>').
210: &mt('LON-CAPA Feed "[_1]" for [_2]',$displayfeedname,$name).
1.6 www 211: ($html?'</h3>'.($edit?'<form method="post"><br />'.
212: &mt('Name of blog/journal').
213: ': <input type="text" size="50" name="newblogname" value="'.
214: $displayfeedname.'" />':'').'<ul>':'</title>'));
1.1 www 215: # Render private items?
216: my $viewpubliconly=1;
217: if (($env{'user.name'} eq $uname) && ($env{'user.domain'} eq $udom)) {
218: $viewpubliconly=0;
219: }
220: # Get feed items
221: my %newsfeed=&Apache::lonnet::dump($feedname,$udom,$uname);
1.4 albertel 222: foreach my $entry (sort(keys(%newsfeed))) {
1.3 albertel 223: if ($entry=~/^(\d+)\_status$/) {
1.1 www 224: my $id=$1;
1.5 www 225: if ($edit) {
226: my %lt=&Apache::lonlocal::texthash('public' => 'public',
227: 'private' => 'private',
228: 'hidden' => 'hidden',
1.6 www 229: 'delete' => 'delete',
230: 'store' => 'Store changes');
1.5 www 231: my %status=();
232: $status{$newsfeed{$id.'_status'}}='checked="checked"';
233: $r->print(<<ENDEDIT);
234: <li>
1.6 www 235: <label><input name='$id\_modified' type='checkbox' /> $lt{'store'}</label>
236:
237: <label><input name='$id\_status' type="radio" value="public" $status{'public'} onClick="changed(this.form,'$id');" /> $lt{'public'}</label>
1.5 www 238:
1.6 www 239: <label><input name='$id\_status' type="radio" value="private" $status{'private'} onClick="changed(this.form,'$id');" /> $lt{'private'}</label>
1.5 www 240:
1.6 www 241: <label><input name='$id\_status' type="radio" value="hidden" $status{'hidden'} onClick="changed(this.form,'$id');" /> $lt{'hidden'}</label>
1.5 www 242:
1.6 www 243: <label><input name='$id\_status' type="radio" value="delete" onClick="changed(this.form,'$id');" /> $lt{'delete'}</label>
1.5 www 244: <br />
1.6 www 245: <input name='$id\_title' type='text' size='80' value='$newsfeed{$id.'_title'}' onChange="changed(this.form,'$id');" /><br />
246: <textarea name='$id\_description' rows="6" cols="80" onChange="changed(this.form,'$id');">$newsfeed{$id.'_description'}</textarea><br />
247: <input name='$id\_link' type='text' size='80' value='$newsfeed{$id.'_link'}' onChange="changed(this.form,'$id');" />
248: <hr /></li>
1.5 www 249: ENDEDIT
250: } else {
251: if (($newsfeed{$id.'_status'} ne 'public') && ($viewpubliconly)) { next; }
252: if ($newsfeed{$id.'_status'} eq 'hidden') { next; }
253: $r->print("\n".($html?"\n<li><b>":"<item>\n<title>").$newsfeed{$id.'_title'}.
254: ($html?"</b><br />\n":"</title>\n<description>").
255: $newsfeed{$id.'_description'}.
256: ($html?"<br />\n<a href='":"</description>\n<link>").
257: "http://".$ENV{'HTTP_HOST'}.
258: $newsfeed{$id.'_link'}.
259: ($html?("'>".&mt('Read more')."</a><br />\n"):"</link>\n"));
260: if ($newsfeed{$id.'_enclosureurl'}) {
261: $r->print(($html?"<a href='":"\n<enclosure url='").
262: $newsfeed{$id.'_enclosureurl'}."' length='".$newsfeed{$id.'_enclosurelength'}.
263: "' type='".$newsfeed{$id.'_enclosuretype'}.($html?"'>".&mt('Enclosure')."</a>":"' />"));
264: }
265: if ($html) {
266: $r->print("\n<hr /></li>\n");
267: } else {
268: $r->print("\n<guid isPermaLink='false'>".$id.$filterfeedname.'_'.$udom.'_'.$uname."</guid></item>\n");
269: }
1.1 www 270: }
271: }
272: }
273: }
1.8 albertel 274: $r->print("\n".($html?'</ul>'.($edit?'<input type="submit" value="'.&mt('Store Marked Changes').'" /></form>':'').&Apache::loncommon::end_page():'</channel></rss>'."\n"));
1.1 www 275: return OK;
276: }
277: 1;
278: __END__
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