wip newstailer; need to handle date conversion urgh

diff --git a/newstailer b/newstailer
new file mode 100644 (file)
index 0000000..7d22520
--- /dev/null
+++ b/newstailer
@@ -0,0 +1,94 @@
+#!/usr/bin/perl -w
+
+use strict qw(refs vars);
+use POSIX;
+
+our $polltime= 60;
+our $logfile= "/var/log/news.notice";
+
+our ($loghandle, $logfile_devino);
+
+sub current_devino () { return join '.', (stat _)[0..1]; }
+
+our %months;
+$months{ (qw(Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec))[$_] }= $_
+    foreach qw(0..11);
+
+sub processline_core ($) {
+    local ($_) = @_;
+    my ($mon,$dom,$h,$m,$s) = 
+       s/^ ([A-Z][a-z]{2}) [ ]
+           ([ 013]\d) [ ]
+           ([ 0-2]\d) : (\d\d) : (\d\d) [ ]
+           [-0-9a-z]+ /x;
+    return "date re not matched" unless defined $mon;
+    $mon= $months{$mon};
+    return "unknown month $mon" unless defined $mon;
+
+    my $isdst= 0;
+    $ts= mktime($s,$m,$h, $dom,$current_year, 0,0, $isdst);
+    $last_ts= 
+}
+
+sub backlog () {
+    my $fh= new IO::File '<', "$logfile.0";
+    if (!$fh) {
+       die "$logfile.0 $!" unless $!==&ENOENT;
+       return;
+    }
+    while (defined(my $l= <$fh>)) {
+       $l =~ s/\n$// or last;
+       processline($l);
+    }
+    close $fh;
+}
+    
+sub logpoll () {
+    my $lbuf= '';
+    my $waited_eol= 0;
+    
+    for (;;) {
+       sleep($polltime);
+
+       if (!$loghandle) {
+           $loghandle= new IO::File '<', $logfile;
+           if (!$loghandle) {
+               die "$logfile $!" unless $!==&ENOENT;
+               next;
+           }
+           stat $loghandle or die $!;
+           $logfile_devino= join '.', (stat _)[0..1];
+       }
+
+       for (;;) {
+           if ($lbuf =~ s/\n$//) {
+               processline($l);
+               $lbuf= '';
+           }
+           my $xtra= <$loghandle>;
+           if (!defined $xtra) {
+               die "$logfile $!" if $loghandle->error;
+               last;
+           }
+           $lbuf .= $xtra;
+       }
+
+       if (stat $logfile) {
+           next if $logfile_devino eq current_devino;
+       } else {
+           die "$logfile $!" unless $!==&ENOENT;
+       }
+
+       # current file is no longer right
+       if (length $lbuf) {
+           # wait for the rest of the line ?
+           next unless $waited_eol++ > 3;
+       }
+       $lbuf= '';
+       close $loghandle;
+       $loghandle= undef;
+    }
+}
+
+backlog();
+logpoll();