--- loncom/interface/lonrss.pm 2006/03/15 21:43:37 1.9
+++ loncom/interface/lonrss.pm 2006/05/11 15:27:49 1.20
@@ -1,7 +1,7 @@
# The LearningOnline Network
# RSS Feeder
#
-# $Id: lonrss.pm,v 1.9 2006/03/15 21:43:37 albertel Exp $
+# $Id: lonrss.pm,v 1.20 2006/05/11 15:27:49 www Exp $
#
# Copyright Michigan State University Board of Trustees
#
@@ -36,10 +36,13 @@ use Apache::lontexconvert;
use Apache::lonlocal;
use Apache::lonhtmlcommon;
+
sub filterfeedname {
my $filename=shift;
$filename=~s/(\_rss\.html|\.rss)$//;
$filename=~s/\W//g;
+ $filename=~s/\_rssfeed$//;
+ $filename=~s/^nohist\_//;
return $filename;
}
@@ -51,8 +54,8 @@ sub displayfeedname {
my ($rawname,$uname,$udom)=@_;
my $filterfilename=&filterfeedname($rawname);
# do we have a stored name?
- my %stored=&Apache::lonnet::get('nohist_all_rss_feeds',[$filterfilename],$udom,$uname);
- if ($stored{$filterfilename}) { return $stored{$filterfilename}; }
+ my %stored=&Apache::lonnet::get('nohist_all_rss_feeds',[$filterfilename,'feed_display_option_'.$filterfilename],$udom,$uname);
+ if ($stored{$filterfilename}) { return ($stored{$filterfilename},$stored{'feed_display_option_'.$filterfilename}); }
# no, construct a name
my $name=$filterfilename;
if ($name=~/^CourseBlog/) {
@@ -63,16 +66,23 @@ sub displayfeedname {
} else {
$name=~s/\_/ /g;
}
- return $name;
+ return ($name,$stored{'feed_display_option_'.$filterfilename});
}
-sub renamefeed {
+sub namefeed {
my ($rawname,$uname,$udom,$newname)=@_;
return &Apache::lonnet::put('nohist_all_rss_feeds',
{ &filterfeedname($rawname) => $newname },
$udom,$uname);
}
+sub changefeeddisplay {
+ my ($rawname,$uname,$udom,$newstatus)=@_;
+ return &Apache::lonnet::put('nohist_all_rss_feeds',
+ { 'feed_display_option_'.&filterfeedname($rawname) => $newstatus },
+ $udom,$uname);
+}
+
sub advertisefeeds {
my ($uname,$udom,$edit)=@_;
my $feeds='';
@@ -82,12 +92,18 @@ sub advertisefeeds {
$mode='adm';
}
foreach my $feed (sort(keys(%feednames))) {
- if ($feed!~/^error\:/) {
- my $feedurl='feed://'.$ENV{'HTTP_HOST'}.'/public/'.$udom.'/'.$uname.'/'.$feed.'.rss';
+ if (($feed!~/^error\:/) && ($feed!~/^feed\_display\_option\_/)) {
+ my $feedurl='http://'.$ENV{'HTTP_HOST'}.'/public/'.$udom.'/'.$uname.'/'.$feed.'.rss';
my $htmlurl='http://'.$ENV{'HTTP_HOST'}.'/'.$mode.'/'.$udom.'/'.$uname.'/'.$feed.'_rss.html';
- $feeds.='<li>'.$feednames{$feed}.
- '<br />'.($edit?&mt('Edit'):'HTML').': <a href="'.$htmlurl.'"><tt>'.$htmlurl.'</tt></a>'.
- ($edit?'':'<br />RSS: <a href="'.$feedurl.'"><tt>'.$feedurl.'</tt></a>').'</li>';
+ if ($feednames{'feed_display_option_'.$feed} eq 'hidden') {
+ if ($edit) {
+ $feeds.='<li><i>'.$feednames{$feed}.'</i><br />'.&mt('Hidden').': <a href="'.$htmlurl.'"><tt>'.$htmlurl.'</tt></a></li>';
+ }
+ } else {
+ $feeds.='<li><b>'.$feednames{$feed}.
+ '</b><br />'.($edit?&mt('Edit'):'HTML').': <a href="'.$htmlurl.'"><tt>'.$htmlurl.'</tt></a>'.
+ '<br />RSS: <a href="'.$feedurl.'"><tt>'.$feedurl.'</tt></a></li>';
+ }
}
}
if ($feeds) {
@@ -97,17 +113,29 @@ sub advertisefeeds {
}
}
+sub rss_link {
+ my ($url) = @_;
+ return qq|<link rel="alternate" type="application/rss+xml" title="Course Announcements" href="$url" />|;
+}
+
{
my $feedcounter;
- sub addentry {
+ sub get_new_feed_id {
$feedcounter++;
- my $id=time.'00000'.$$.'00000'.$feedcounter;
- return &editentry($id,@_);
+ return time().'00000'.$$.'00000'.$feedcounter;
}
}
+sub addentry {
+ my $id=&get_new_feed_id();
+ return &editentry($id,@_);
+}
+
sub editentry {
- my ($id,$uname,$udom,$filename,$title,$description,$url,$status,$encurl,$enclength,$enctype)=@_;
+ my ($id,$uname,$udom,$filename,$title,$description,$url,$status,$encurl,$enctype)=@_;
+ if ($status eq 'deleted') {
+ return &changestatus($id,$uname,$udom,$filename,$status);
+ }
my $feedname=&feedname($filename);
&Apache::lonnet::put('nohist_all_rss_feeds',
{ &filterfeedname($filename) => &displayfeedname($filename,$uname,$udom) },
@@ -117,7 +145,6 @@ sub editentry {
$id.'_description' => $description,
$id.'_link' => $url,
$id.'_enclosureurl' => $encurl,
- $id.'_enclosurelength' => $enclength,
$id.'_enclosuretype' => $enctype,
$id.'_status' => $status},$udom,$uname);
}
@@ -130,7 +157,6 @@ sub changestatus {
$id.'_description',
$id.'_link',
$id.'_enclosureurl',
- $id.'_enclosurelength',
$id.'_enclosuretype',
$id.'_status'],$udom,$uname);
} else {
@@ -139,14 +165,19 @@ sub changestatus {
}
sub changed_js {
-
return <<ENDSCRIPT;
<script type="text/javascript">
function changed(tform,id) {
tform.elements[id+"_modified"].checked=true;
}
</script>
-ENDSCRIPT
+ENDSCRIPT
+}
+
+sub determine_enclosure_types {
+ my ($url)=@_;
+ my ($ending)=($url=~/\.(\w+)$/);
+ return &Apache::loncommon::filemimetype($ending);
}
sub handler {
@@ -174,15 +205,14 @@ sub handler {
my $filterfeedname=&filterfeedname($filename);
my $feedname=&feedname($filename);
- my $displayfeedname=&displayfeedname($filename,$uname,$udom);
+ my ($displayfeedname,$displayoption)=&displayfeedname($filename,$uname,$udom);
if ($html) {
- $r->print(&Apache::lonxml::xmlbegin().
- &Apache::loncommon::head($displayfeedname).
- &Apache::loncommon::bodytag($displayfeedname,'','','',$udom,
- $env{'form.register'}).
+ $r->print(&Apache::loncommon::start_page(($displayfeedname?$displayfeedname:&mt("Available RSS Feeds and Blogs")),undef,
+ {'domain' => $udom,
+ 'force_register' =>
+ $env{'form.register'}}).
&changed_js());
-
- } else {
+ } else { # render RSS
$r->print("<rss version='2.0' xmlns:dc='http://purl.org/dc/elements/1.1'>\n<channel>".
"\n<link>http://".$ENV{'HTTP_HOST'}.'/public/'.$udom.'/'.$uname.'/'.
$filterfeedname.'_rss.html</link>'.
@@ -190,14 +220,40 @@ sub handler {
&mt('An RSS Feed provided by the LON-CAPA Learning Content Management System').
'</description>');
}
+# Do we have stuff to store?
+ my $newid = &get_new_feed_id();
# Is this user for real?
my $homeserver=&Apache::lonnet::homeserver($uname,$udom);
if ($html) {
+# Any new feeds or renaming of feeds?
+ if ($edit) {
+# Hide a feed?
+ if ($env{'form.hidethisblog'}) {
+ &changefeeddisplay($feedname,$uname,$udom,'hidden');
+ ($displayfeedname,$displayoption)=&displayfeedname($filename,$uname,$udom);
+ }
+# Advertise a feed?
+ if ($env{'form.advertisethisblog'}) {
+ &changefeeddisplay($feedname,$uname,$udom,'public');
+ ($displayfeedname,$displayoption)=&displayfeedname($filename,$uname,$udom);
+ }
+# New feed?
+ if ($env{'form.namenewblog'}=~/\w/) {
+ &namefeed($env{'form.namenewblog'},$uname,$udom,$env{'form.namenewblog'});
+ }
+# Old feed that is being renamed?
+ if (($displayfeedname) && ($env{'form.newblogname'}=~/\w/)) {
+ if ($env{'form.newblogname'} ne $displayfeedname) {
+ &namefeed($feedname,$uname,$udom,$env{'form.newblogname'});
+ ($displayfeedname,$displayoption)=&displayfeedname($filename,$uname,$udom);
+ }
+ }
+ }
$r->print(&advertisefeeds($uname,$udom,$edit));
}
if ($homeserver eq 'no_host') {
$r->print(($html?'<h3>':'<title>').&mt('No feed available').($html?'</h3>':'</title>'));
- } else {
+ } else { # is indeed a user
# Course or user?
my $name='';
if ($uname=~/^\d/) {
@@ -206,34 +262,64 @@ sub handler {
} else {
$name=&Apache::loncommon::nickname($uname,$udom);
}
- $r->print("\n".
- ($html?'<h3>':'<title>').
- &mt('LON-CAPA Feed "[_1]" for [_2]',$displayfeedname,$name).
- ($html?'</h3>'.($edit?'<form method="post"><br />'.
- &mt('Name of blog/journal').
- ': <input type="text" size="50" name="newblogname" value="'.
- $displayfeedname.'" />':'').'<ul>':'</title>'));
-# Render private items?
- my $viewpubliconly=1;
- if (($env{'user.name'} eq $uname) && ($env{'user.domain'} eq $udom)) {
- $viewpubliconly=0;
+# Add a new feed
+ if (($html) && ($edit)) {
+ $r->print('<form method="post">');
+ $r->print(&mt('Name for New Blog').": <input type='text' size='40' name='namenewblog' />");
+ $r->print('<input type="submit" value="'.&mt('Start a New Blog').'" />');
+ $r->print('</form>');
}
+ if ($displayfeedname) { # this is an existing feed
+# Anything to store?
+ if ($edit) {
+ my %newsfeed=&Apache::lonnet::dump($feedname,$udom,$uname);
+ foreach my $entry (sort(keys(%newsfeed)),$env{'form.newid'}.'_status') {
+ if ($entry=~/^(\d+)\_status$/) {
+ my $id=$1;
+ if ($env{'form.'.$id.'_modified'}) {
+ &editentry($id,$uname,$udom,$feedname,
+ $env{'form.'.$id.'_title'},
+ $env{'form.'.$id.'_description'},
+ $env{'form.'.$id.'_url'},
+ $env{'form.'.$id.'_status'});
+ }
+ }
+ }
+ } #done storing
+
+ $r->print("\n".
+ ($html?'<hr /><h3>':'<title>').
+ &mt('LON-CAPA Feed "[_1]" for [_2]',$displayfeedname,$name).
+ ($displayoption eq 'hidden'?' ('.&mt('Hidden').')':'').
+ ($html?'</h3>'.($edit?'<form method="post"><br />'.
+ &mt('Name of blog/journal').
+ ': <input type="text" size="50" name="newblogname" value="'.
+ $displayfeedname.'" />':'').'<ul>':'</title>'));
+# Render private items?
+ my $viewpubliconly=1;
+ if (($env{'user.name'} eq $uname) && ($env{'user.domain'} eq $udom)) {
+ $viewpubliconly=0;
+ }
# Get feed items
- my %newsfeed=&Apache::lonnet::dump($feedname,$udom,$uname);
- foreach my $entry (sort(keys(%newsfeed))) {
- if ($entry=~/^(\d+)\_status$/) {
- my $id=$1;
- if ($edit) {
- my %lt=&Apache::lonlocal::texthash('public' => 'public',
- 'private' => 'private',
- 'hidden' => 'hidden',
- 'delete' => 'delete',
- 'store' => 'Store changes');
- my %status=();
- $status{$newsfeed{$id.'_status'}}='checked="checked"';
- $r->print(<<ENDEDIT);
+ my %newsfeed=&Apache::lonnet::dump($feedname,$udom,$uname);
+ foreach my $entry (sort(keys(%newsfeed)),$newid.'_status') {
+ if ($entry=~/^(\d+)\_status$/) { # is an entry
+ my $id=$1;
+ if ($edit) {
+ my %lt=&Apache::lonlocal::texthash('public' => 'public',
+ 'private' => 'private',
+ 'hidden' => 'hidden',
+ 'delete' => 'delete',
+ 'store' => 'Store changes',
+ 'title' => 'Title',
+ 'link' => 'Link',
+ 'description' => 'Description');
+ my %status=();
+ unless ($newsfeed{$id.'_status'}) { $newsfeed{$id.'_status'}='public'; }
+ $status{$newsfeed{$id.'_status'}}='checked="checked"';
+ $r->print(<<ENDEDIT);
<li>
-<label><input name='$id\_modified' type='checkbox' /> $lt{'store'}</label>
+<label><input name='$id\_modified' type='checkbox' value="modified" /> $lt{'store'}</label>
<label><input name='$id\_status' type="radio" value="public" $status{'public'} onClick="changed(this.form,'$id');" /> $lt{'public'}</label>
@@ -241,39 +327,57 @@ sub handler {
<label><input name='$id\_status' type="radio" value="hidden" $status{'hidden'} onClick="changed(this.form,'$id');" /> $lt{'hidden'}</label>
-<label><input name='$id\_status' type="radio" value="delete" onClick="changed(this.form,'$id');" /> $lt{'delete'}</label>
+<label><input name='$id\_status' type="radio" value="deleted" onClick="changed(this.form,'$id');" /> $lt{'delete'}</label>
<br />
-<input name='$id\_title' type='text' size='80' value='$newsfeed{$id.'_title'}' onChange="changed(this.form,'$id');" /><br />
+$lt{'title'}:
+<input name='$id\_title' type='text' size='60' value='$newsfeed{$id.'_title'}' onChange="changed(this.form,'$id');" /><br />
+$lt{'description'}:<br />
<textarea name='$id\_description' rows="6" cols="80" onChange="changed(this.form,'$id');">$newsfeed{$id.'_description'}</textarea><br />
-<input name='$id\_link' type='text' size='80' value='$newsfeed{$id.'_link'}' onChange="changed(this.form,'$id');" />
+$lt{'link'}:
+<input name='$id\_link' type='text' size='60' value='$newsfeed{$id.'_link'}' onChange="changed(this.form,'$id');" />
<hr /></li>
ENDEDIT
- } else {
- if (($newsfeed{$id.'_status'} ne 'public') && ($viewpubliconly)) { next; }
- if ($newsfeed{$id.'_status'} eq 'hidden') { next; }
- $r->print("\n".($html?"\n<li><b>":"<item>\n<title>").$newsfeed{$id.'_title'}.
- ($html?"</b><br />\n":"</title>\n<description>").
- $newsfeed{$id.'_description'}.
- ($html?"<br />\n<a href='":"</description>\n<link>").
- "http://".$ENV{'HTTP_HOST'}.
- $newsfeed{$id.'_link'}.
- ($html?("'>".&mt('Read more')."</a><br />\n"):"</link>\n"));
- if ($newsfeed{$id.'_enclosureurl'}) {
- $r->print(($html?"<a href='":"\n<enclosure url='").
- $newsfeed{$id.'_enclosureurl'}."' length='".$newsfeed{$id.'_enclosurelength'}.
- "' type='".$newsfeed{$id.'_enclosuretype'}.($html?"'>".&mt('Enclosure')."</a>":"' />"));
- }
- if ($html) {
- $r->print("\n<hr /></li>\n");
- } else {
- $r->print("\n<guid isPermaLink='false'>".$id.$filterfeedname.'_'.$udom.'_'.$uname."</guid></item>\n");
- }
+ } else { # not in edit mode, just displaying
+ if (($newsfeed{$id.'_status'} ne 'public') && ($viewpubliconly)) { next; }
+ if ($newsfeed{$id.'_status'} eq 'hidden') { next; }
+ $r->print("\n".($html?"\n<li><b>":"<item>\n<title>").$newsfeed{$id.'_title'}.
+ ($html?"</b><br />\n":"</title>\n<description>").
+ $newsfeed{$id.'_description'}.
+ ($html?"<br />\n<a href='":"</description>\n<link>").
+ "http://".$ENV{'HTTP_HOST'}.
+ $newsfeed{$id.'_link'}.
+ ($html?("'>".&mt('Read more')."</a><br />\n"):"</link>\n"));
+# Enclosure? Get stats
+ if ($newsfeed{$id.'_enclosureurl'}) {
+ my @stat=&Apache::lonnet::stat_file($newsfeed{$id.'_enclosureurl'});
+ if ($stat[7]) {
+# Has non-zero length (and exists)
+ my $enclosuretype=$newsfeed{$id.'_enclosetype'};
+ $r->print(($html?"<a href='":"\n<enclosure url='").
+ $newsfeed{$id.'_enclosureurl'}."' length='".$stat[7].
+ "' type='".$enclosuretype.($html?"'>".&mt('Enclosure')."</a>":"' />"));
+ }
+ }
+ if ($html) { # is HTML
+ $r->print("\n<hr /></li>\n");
+ } else { # is RSS
+ $r->print("\n<guid isPermaLink='false'>".$id.$filterfeedname.'_'.$udom.'_'.$uname."</guid></item>\n");
+ }
+ } # end of "in edit mode"
+ } # end of rendering a real entry
+ } # end of loop through all keys
+ if ($html) {
+ $r->print('</ul>');
+ if ($edit) {
+ $r->print('<input type="hidden" name="newid" value="'.$newid.'"/><input type="submit" value="'.&mt('Store Marked Changes').'" />'.
+ ($displayoption eq 'hidden'?'<input type="submit" name="advertisethisblog" value="'.&mt('Advertise this Feed').'" />':
+ '<input type="submit" name="hidethisblog" value="'.&mt('Hide this Feed').'" />'));
}
}
- }
- }
- $r->print("\n".($html?'</ul>'.($edit?'<input type="submit" value="'.&mt('Store Marked Changes').'" /></form>':'').&Apache::loncommon::end_page():'</channel></rss>'."\n"));
+ } # was a real display feedname
+ $r->print(($html?'</form>'.&Apache::loncommon::end_page():'</channel></rss>'."\n"));
+ } # a real user
return OK;
-}
+} # end handler
1;
__END__