On Sun, Apr 19, 2009 at 03:31:19PM +0800, Paul Wise wrote:
> On Sun, 2009-04-19 at 09:23 +0200, Jan Hauke Rahm wrote:
> 
> > You're welcome but I just noticed that rc-alert(1) mentions popbugs(1)
> > in the SEE ALSO section. I should have had a look there. It's in the
> > debian-goodies package which says in its description:
> > 
> > popbugs      - Display a customized release-critical bug list based on
> >                packages you use (using popularity-contest data)
> 
> Unfortunately it isn't useful due to lack of version support (#495606).

I was confused first because both rc-alert and popbugs use the same URL
to get the RC bugs but rc-alert compares with /var/lib/dpkg status which
popbugs doesn't.

> I guess combining the popcon stuff from it with rc-alert would be good.

Well, I added a similar algorithm to rc-alert now. I'd appreciate if you
could test it. The patch applies against current trunk, though. So, if
you find some time please check out

    svn://svn.debian.org/devscripts/trunk

and patch it with the patch attached.

scripts/rc-alert --popcon
scripts/rc-alert --popcon --pc-vote
scripts/rc-alert --popcon --pc-local

Cheers,
Hauke
Index: scripts/rc-alert.pl
===================================================================
--- scripts/rc-alert.pl	(revision 1861)
+++ scripts/rc-alert.pl	(working copy)
@@ -27,7 +27,7 @@
 use Getopt::Long;
 
 sub remove_duplicate_values($);
-sub print_if_relevant(%);
+sub store_if_relevant(%);
 sub human_flags($);
 sub unhtmlsanit($);
 sub dt_parse_request($);
@@ -65,6 +65,10 @@
 my $distincoperation = "or";
 my $distexcoperation = "or";
 
+my $popcon = 0;
+my $popcon_by_vote = 0;
+my $popcon_local = 0;
+
 my $debtags = '';
 my $debtags_db = '/var/lib/debtags/package-tags';
 
@@ -93,6 +97,12 @@
   --debtags          Comma separated list of tags
                        (e.g. implemented-in::perl,role::plugin)
   --debtags-database Database file (default: /var/lib/debtags/package-tags)
+
+  Popcon options:
+  --popcon           Sort bugs by package's popcon rank
+  --pc-vote          Sort by_vote instead of by_inst (see debtags(1))
+  --pc-local         Use local popcon data from last popcon run
+                       (/var/log/popularity-contest)
 EOF
 
 my $version = <<"EOF";
@@ -124,6 +134,9 @@
 	   "exclude-dist-op=s" => \$distexcoperation,
 	   "debtags=s" => \$debtags,
 	   "debtags-database=s" => \$debtags_db,
+       "popcon" => \$popcon,
+       "pc-vote" => \$popcon_by_vote,
+       "pc-local" => \$popcon_local,
 	   );
 
 if ($opt_help) { print $usage; exit 0; }
@@ -177,6 +190,30 @@
     $package_list = InstalledPackages(0);
 }
 
+## Get popcon information
+my %popcon;
+if ($popcon) {
+    my $pc_by = $popcon_by_vote ? 'vote' : 'inst';
+
+    my $pc_regex;
+    if ($popcon_local) {
+        open POPCON, "/var/log/popularity-contest"
+            or die "Unable to access popcon data: $!";
+        $pc_regex = '(\d+)\s\d+\s(\S+)';
+    } else {
+        open POPCON, "wget -q -O - http://popcon.debian.org/by_$pc_by.gz | gunzip -c |"
+            or die "Not able to receive remote popcon data!";
+        $pc_regex = '(\d+)\s+(\S+)\s+(\d+\s+){5}\(.*\)';
+    }
+
+    while (<POPCON>) {
+        next unless /$pc_regex/;
+        # rank $1 for package $2
+        $popcon{$2} = $1;
+    }
+    close POPCON;
+}
+
 ## Get debtags info
 my %dt_pkg;
 my @dt_requests;
@@ -198,6 +235,7 @@
 my $found_bugs_start;
 my ($current_package, $comment);
 
+my %pkg_store;
 while (defined(my $line = <BUGS>)) {
     if( $line =~ /^<div class="package">/) {
 	$found_bugs_start = 1;
@@ -210,9 +248,10 @@
     } elsif ($line =~ m%<a name="(\d+)"></a>\s*<a href="[^\"]+">\d+</a> (\[[^\]]+\])( \[[^\]]+\])? ([^<]+)%i) {
 	my ($num, $tags, $dists, $name) = ($1, $2, $3, $4);
 	chomp $name;
-	print_if_relevant(pkg => $current_package, num => $num, tags => $tags, dists => $dists, name => $name, comment => $comment);
+	store_if_relevant(pkg => $current_package, num => $num, tags => $tags, dists => $dists, name => $name, comment => $comment);
     }
 }
+for (sort {$a <=> $b } keys %pkg_store) { print $pkg_store{$_}; }
 
 close BUGS or die "$progname: could not close $cachefile: $!\n";
 
@@ -228,15 +267,16 @@
     return $in;
 }
 
-sub print_if_relevant(%) {
+sub store_if_relevant(%) {
     my %args = @_;
+
     if (exists($$package_list{$args{pkg}})) {
 	# potentially relevant
 	my ($flags, $flagsapply) = human_flags($args{tags});
 	my $distsapply = 1;
 	my $dists;
 	($dists, $distsapply) = human_dists($args{dists}) if defined $args{dists};
-	
+
 	return unless $flagsapply and $distsapply;
 
 	foreach (@dt_requests) {
@@ -246,16 +286,32 @@
 	}
 
 	# yep, relevant
-	print "Package: $args{pkg}\n",
-	    $comment,  # non-empty comments always contain the trailing \n
-	    "Bug:     $args{num}\n",
-	    "Title:   " . unhtmlsanit($args{name}) , "\n",
-	    "Flags:   " . $flags , "\n",
-	    (defined $args{dists} ? "Dists:  " . $dists . "\n" : ""),
+        my $bug_string = "Package: $args{pkg}\n" .
+            $comment .  # non-empty comments always contain the trailing \n
+            "Bug:     $args{num}\n" .
+            "Title:   " . unhtmlsanit($args{name}) . "\n" .
+            "Flags:   " . $flags . "\n" .
+            (defined $args{dists} ? "Dists:  " . $dists . "\n" : "") .
 	    (defined $dt_pkg{$args{pkg}} ? 
-		"Debtags: " . $dt_pkg{$args{pkg}} . "\n" : ""),
-	    "\n";
+        		"Debtags: " . $dt_pkg{$args{pkg}} . "\n" : "");
+        unless ($popcon_local) {
+            $bug_string .= (defined $popcon{$args{pkg}} ?
+                "Popcon rank: " . $popcon{$args{pkg}} . "\n" : "");
     }
+        $bug_string .= "\n";
+
+        if ($popcon) {
+            return unless $bug_string;
+            my $index = $popcon{$args{pkg}} ? $popcon{$args{pkg}} : 9999999;
+            if ($pkg_store{$index}) {
+                $pkg_store{$index} .= $bug_string;
+            } else {
+                $pkg_store{$index} = $bug_string;
+            }
+        } else {
+            $pkg_store{1} .= $bug_string;
+        }
+    }
 }
 
 sub human_flags($) {
Index: scripts/rc-alert.1
===================================================================
--- scripts/rc-alert.1	(revision 1861)
+++ scripts/rc-alert.1	(working copy)
@@ -2,7 +2,7 @@
 .SH NAME
 rc-alert \- check for installed packages with release-critical bugs
 .SH SYNOPSIS
-\fBrc-alert [inclusion options] [\-\-debtags [tag[,tag ...]] [package ...]\fR
+\fBrc-alert [inclusion options] [\-\-debtags [tag[,tag ...]] [\-\-popcon] [package ...]\fR
 .br
 \fBrc-alert \-\-help|\-\-version\fR
 .SH DESCRIPTION
@@ -76,6 +76,22 @@
 .BR \-\-debtags\-database
 Use a non-standard debtags database.  The default is
 /var/lib/debtags/packages-tags.
+.P
+Popularity-contest collects data about installation and usage of Debian
+packages. You can additionaly sort the bugs by the popcon rank of the related
+packages.
+.TP
+.BR \-\-popcon
+Sort bugs by popcon rank of the package the bug belongs to.
+.TP
+.BR \-\-pc\-vote
+Packages are sorted by the number of people who installed this package. With
+this option you can change it to the number of people who use this package
+regularly. This option has no effect in combination with \-\-pc\-local.
+.TP
+.BR \-\-pc\-local
+Instead of requesting remote data the information of the last popcon run is
+used (/var/log/popularity-contest).
 .SH EXAMPLES
 .TP
 .BR \-\-include\-dists " OS"
@@ -95,6 +111,10 @@
 The bug must apply to packages matching the specified debtags, i.e. the match
 will only include packages that have the ‘role::plugin’ tag and that have
 either of the tags ‘implemented-in::perl’ or ‘implemented-in::python’.
+.TP
+.BR \-\-popcon " "\-\-pc\-local
+Read out /var/log/popularity-contest and sort bugs by your personal popcon
+ranking (which is basically the atime of your packages binaries).
 .SH BUGS
 It is not possible to say "does not apply only to unstable"
 .SH SEE ALSO

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