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#!/usr/bin/perl
#
# buildd-vlog: little utility to watch the logs written by sbuild
# Copyright © 1999 Roman Hodek <Roman.Hodek@informatik.uni-erlangen.de>
# Copyright © 2009 Roger Leigh <rleigh@debian.org>
#
# This program is free software: you can redistribute it and/or modify
# it under the terms of the GNU General Public License as published by
# the Free Software Foundation, either version 2 of the License, or
# (at your option) any later version.
#
# This program is distributed in the hope that it will be useful, but
# WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
# General Public License for more details.
#
# You should have received a copy of the GNU General Public License
# along with this program. If not, see
# <http://www.gnu.org/licenses/>.
#
#######################################################################
use strict;
use warnings;
use POSIX;
use Buildd;
use Buildd::Conf qw();
use Sbuild::OptionsBase;
my $conf = Buildd::Conf::new();
exit 1 if !defined($conf);
my $options = Sbuild::OptionsBase->new($conf, "buildd-vlog", "1");
exit 1 if !defined($options);
my $logpath = $conf->get('HOME') . '/logs';
sub read_progress ();
sub newest_log ($);
sub tail ($);
while (1) {
my $curr_pkg = read_progress();
if (!$curr_pkg) {
print "No build-progress -- waiting\n";
do {
sleep 5;
} while (!($curr_pkg = read_progress()));
}
print("package '$curr_pkg'\n");
my $logf = newest_log("$logpath/${curr_pkg}*");
if ($logf eq "") {
sleep(1);
next;
}
print "\n\n", "=" x 78, "\n$logf:\n\n";
tail($logf);
}
sub read_progress () {
my $f = $conf->get('HOME') . '/build/build-progress';
my $p = "";
my $state = "";
open(F, "<$f") || return "";
while (<F>) {
s/_[0-9]+:/_/;
($p, $state) = ($1, $2) if /^(\S+): (\S+)$/;
}
return ""
if ($state ne "building");
close(F);
return $p;
}
sub newest_log ($) {
my $pattern = shift;
my @f = glob($pattern);
my $maxtime = 0;
my $f = "";
my @s;
foreach (@f) {
@s = stat($_);
warn "Cannot stat $_: $!", next if !@s;
if ($s[9] > $maxtime) {
$maxtime = $s[9];
$f = $_;
}
}
return $f;
}
sub tail ($) {
my $f = shift;
my @s = stat($f);
if (!@s) {
warn "Cannot stat $f: $!\n";
return;
}
my $size = $s[7];
if (!open(F, "<$f")) {
warn "Cannot open $f: $!\n";
return;
}
if ($size > 3 * 1024) {
seek(F, -3 * 1024, SEEK_END);
my $junk = <F>; # throw away first incomplete line
print $size+ 3 * 1024, " bytes skipped...\n";
}
while (1) {
while (<F>) {
print $_;
if (/^Build needed \d\d:\d\d:\d\d/) {
close(F);
sleep(1);
return;
}
}
sleep(2);
seek(F, 0, SEEK_CUR);
}
}
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