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#!/usr/bin/perl -w

# podebconf-report-po, Send outdated debconf PO files to the last translator
# Copyright (C) 2004-2006 Fabio Tranchitella <kobold@kobold.it>
#                         Denis Barbier <barbier@debian.org>
# Copyright (C) 2007-2008 Nicolas François <nicolas.francois@centraliens.net>
#
# 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 Library General Public License for more details.
#
# You should have received a copy of the GNU General Public License
# along with this program; if not, write to the Free Software
# Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
#

## Release information
my $PROGRAM = "podebconf-report-po";
my $VERSION = "0.14";

## Loaded modules, require libmail-sendmail-perl
use strict;
my $no_zlib = 0;
eval q{use Compress::Zlib;};
if ($@) {
	$no_zlib = 1;
	eval q{ sub Compress::Zlib::memGzip { return shift; } };
}
my $no_encode = 0;
eval q{use Encode;};
if ($@) {
	$no_encode = 1;
}
use MIME::Base64;
use MIME::QuotedPrint;
use Getopt::Long;
use POSIX;
use File::Temp 'tempfile';
use Cwd 'abs_path';

## Global variables
my $CONF_ARG;
if (-e $ENV{'HOME'}."/.podebconf-report-po.conf") {
	$CONF_ARG = $ENV{'HOME'}."/.podebconf-report-po.conf";
}
my $NO_CONF;
my $HELP_ARG = 0;
my $VERSION_ARG = 0;
my $VERBOSE_ARG;
my $NO_VERBOSE;
my $SUBMIT_ARG = 0;
my $FORCE_ARG;
my $NO_FORCE;
my $CALL;
my $CALL_WITH_TRANSLATORS;
my $CALL_WITHOUT_TRANSLATORS;
my $POTFILE = "";
my $LANGS = "";
my $LANGUAGETEAM_ARG;
my $NO_LANGUAGETEAM;
my $SMTP_ARG;
my $TEMPLATE_ARG;
my $TEMPLATE_CALL;
my $TEMPLATE_TRANSLATORS;
my $TEMPLATE_SUBMIT;
my $NO_TEMPLATE;
my $DEFAULT_ARG;
my $NO_DEFAULT;
my $PACKAGE_ARG = "";
my $SUMMARY_ARG;
my $NO_SUMMARY;
my $FROM_ARG;
my $BTS_ARG = "";
my $DEADLINE_ARG;
my $NO_DEADLINE;
my $PODIR_ARG = "";
my $GZIP_ARG;
my $NO_GZIP;
my $UTF8;
my $NO_UTF8;
my $MBOX = "";
my $MUTT = 0;
my @ADDLANGUAGETEAM = ();
my $SEND_MESSAGE = 0;
my $NOT_DEBCONF = 0;

my @TOPDIRS = qw{../.. .. .};

my $PODIR = '';

my $EDITOR = '/usr/bin/sensible-editor';

## Default subjects (used if the specified template does not contain a
## Subject field).
my $SUBJECT_TRANSLATOR;
my $SUBJECT_SUBMIT;
my $SUBJECT_CALL;

my $SUBJECT = '';
my $BODY = '';
#  Warnings may be deleted from screen when entering editor,
#  so display them when it is closed.
my $warn = '';

## Handle options
GetOptions
(
 "conf=s"          => \$CONF_ARG,
 "noconf"          => \$NO_CONF,
 "help"            => \$HELP_ARG,
 "version"         => \$VERSION_ARG,
 "v|verbose"       => \$VERBOSE_ARG,
 "noverbose"       => \$NO_VERBOSE,
 "f|force"         => \$FORCE_ARG,
 "noforce"         => \$NO_FORCE,
 "podir=s"         => \$PODIR_ARG,
 "smtp=s"          => \$SMTP_ARG,
 "template=s"      => \$TEMPLATE_ARG,
 "templatetranslators=s" => \$TEMPLATE_TRANSLATORS,
 "templatecall=s"  => \$TEMPLATE_CALL,
 "templatesubmit=s" => \$TEMPLATE_SUBMIT,
 "notemplate"      => \$NO_TEMPLATE,
 "default"         => \$DEFAULT_ARG,
 "nodefault"       => \$NO_DEFAULT,
 "gzip"            => \$GZIP_ARG,
 "nogzip"          => \$NO_GZIP,
 "langs=s"         => \$LANGS,
 "languageteam"    => \$LANGUAGETEAM_ARG,
 "nolanguageteam"  => \$NO_LANGUAGETEAM,
 "addlanguageteam=s"=>\@ADDLANGUAGETEAM,
 "package=s"       => \$PACKAGE_ARG,
 "deadline=s"      => \$DEADLINE_ARG,
 "nodeadline"      => \$NO_DEADLINE,
 "call:s"          => \$CALL,
 "withtranslators" => \$CALL_WITH_TRANSLATORS,
 "withouttranslators" => \$CALL_WITHOUT_TRANSLATORS,
 "potfile=s"       => \$POTFILE,
 "summary"         => \$SUMMARY_ARG,
 "nosummary"       => \$NO_SUMMARY,
 "from=s"          => \$FROM_ARG,
 "bts=s"           => \$BTS_ARG,
 "submit"          => \$SUBMIT_ARG,
 "postpone=s"      => \$MBOX,
 "mutt"            => \$MUTT,
 "utf8"            => \$UTF8,
 "noutf8"          => \$NO_UTF8,
 "notdebconf"      => \$NOT_DEBCONF,
 "sendmessage"     => \$SEND_MESSAGE
 ) or &Help_InvalidOption;

&Help_PrintVersion if $VERSION_ARG;
&Help_PrintHelp    if $HELP_ARG;

eval q{use Mail::Sendmail;};
die "$PROGRAM: This program requires the libmail-sendmail-perl package.\n".
    "$PROGRAM: Aborting!\n" if $@;

# Check invalid set of options
if ($LANGUAGETEAM_ARG && defined $CALL && not $CALL_WITH_TRANSLATORS) {
	die "In the --call mode, the --languageteam option is only valid if --withtranslators is specified.\n";
}

## Try to locate the PO directory
if ($PODIR_ARG eq "") {
	my $dir = getcwd;

if ($NOT_DEBCONF) {
		if ($dir =~ m/\/po$/) {
			$PODIR = ".";
		} elsif (-d "$dir/po") {
			$PODIR = "po";
		}
	} else {
		if ($dir =~ m/\/po$/) {
			$PODIR = ".";
		} elsif (-d "$dir/debian/po") {
			$PODIR = "debian/po";
		} elsif (-d "$dir/po") {
			$PODIR = "po";
		}
	}
} else {
	$PODIR = $PODIR_ARG;
}
die "Directory po not found, exiting!\n" if $PODIR eq "";
die "Wrong argument: $PODIR is not a directory!\n" unless -d $PODIR;

## Try to detect if it is a debconf template translation
unless ($NOT_DEBCONF) {
	my $dir = abs_path($PODIR);
	if ($dir =~ m/\/po$/ and $dir !~ m/\/debian\/po$/) {
		$NOT_DEBCONF = 1;
	}
}

## Define the default subjects (if not set in the template)
if ($NOT_DEBCONF) {
	$SUBJECT_TRANSLATOR = "<package_and_version>: Please update the PO translation for the package <package>";
	$SUBJECT_SUBMIT = "PO translations for the package <package> are outdated";
	$SUBJECT_CALL = "<package_and_version>: Please translate the package <package>";
} else {
	$SUBJECT_TRANSLATOR = "<package_and_version>: Please update debconf PO translation for the package <package>";
	$SUBJECT_SUBMIT = "debconf PO translations for the package <package> are outdated";
	$SUBJECT_CALL = "<package_and_version>: Please translate debconf PO for the package <package>";
}

my $conf = "";

unless ($NO_CONF or !defined $CONF_ARG) {
	open (CNF, "< $CONF_ARG")
		or die ("Couldn't read $CONF_ARG: $!\nExiting!\n");
	while (<CNF>) {
		$conf .= $_;
	}
	close(CNF)
		or die ("Couldn't close $CONF_ARG: $!\nExiting!\n");

$conf =~ s/^\s*#.*$//m;
	$conf =~ s/\s*$//m;
}

if ($conf =~ m/^smtp\s*(?:\s|=)\s*(.*)$/m) {
	$SMTP_ARG = $1;
} elsif (!defined $SMTP_ARG) {
	$SMTP_ARG = "";
}

if (defined $FROM_ARG) {
	# Use the from parameter from the command line
} elsif ($conf =~ m/^from\s*(?:\s|=)\s*(.*)$/m) {
	$FROM_ARG = $1;
} elsif (!defined $FROM_ARG) {
	# This part comes from devscripts' bts
	if ($ENV{'DEBEMAIL'} || $ENV{'EMAIL'}) {
		my ($email, $name);
		if (exists $ENV{'DEBFULLNAME'}) { $name = $ENV{'DEBFULLNAME'}; }
		if (exists $ENV{'DEBEMAIL'}) {
			$email = $ENV{'DEBEMAIL'};
			if ($email =~ /^(.*?)\s+<(.*)>\s*$/) {
				$name ||= $1;
				$email = $2;
			}
		}
		if (exists $ENV{'EMAIL'}) {
			if ($ENV{'EMAIL'} =~ /^(.*?)\s+<(.*)>\s*$/) {
				$name ||= $1;
				$email ||= $2;
			} else {
				$email ||= $ENV{'EMAIL'};
			}
		}
		if (! $name) {
			# Perhaps not ideal, but it will have to do
			$name = (getpwuid($<))[6];
			$name =~ s/,.*//;
		}
		$FROM_ARG = $name ? "$name <$email>" : $email;
	} else {
		# We will try below to use the Maintainer: control field
		$FROM_ARG = "";
	}
}

if (defined $NO_VERBOSE) {
	$VERBOSE_ARG = 0;
} elsif ($conf =~ m/^verbose$/m) {
	$VERBOSE_ARG = 1;
} elsif (!defined $VERBOSE_ARG) {
	$VERBOSE_ARG = 0;
}

if (defined $NO_FORCE) {
	$FORCE_ARG = 0;
} elsif ($conf =~ m/^force$/m) {
	$FORCE_ARG = 1;
} elsif (!defined $FORCE_ARG) {
	$FORCE_ARG = 0;
}

if (defined $NO_TEMPLATE) {
	$TEMPLATE_ARG = "";
} elsif ($conf =~ m/^template\s*(?:\s|=)\s*(.*)$/m) {
	$TEMPLATE_ARG = $1;
} elsif (!defined $TEMPLATE_ARG) {
	$TEMPLATE_ARG = "";
}

if (defined $TEMPLATE_TRANSLATORS) {
	# Command line has the highest priority
} elsif ($conf =~ m/^templatetranslators\s*(?:\s|=)\s*(.*)$/m) {
	$TEMPLATE_TRANSLATORS = $1;
} else {
	if ($NOT_DEBCONF) {
		$TEMPLATE_TRANSLATORS ="/usr/share/po-debconf/templates/translators-po";
	} else {
		$TEMPLATE_TRANSLATORS ="/usr/share/po-debconf/templates/translators";
	}
}

if (defined $TEMPLATE_SUBMIT) {
	# Command line has the highest priority
} elsif ($conf =~ m/^templatesubmit\s*(?:\s|=)\s*(.*)$/m) {
	$TEMPLATE_SUBMIT = $1;
} else {
	$TEMPLATE_SUBMIT ="/usr/share/po-debconf/templates/submit";
}

if (defined $TEMPLATE_CALL) {
	# Command line has the highest priority
} elsif ($conf =~ m/^templatecall\s*(?:\s|=)\s*(.*)$/m) {
	$TEMPLATE_CALL = $1;
} else {
	if ($NOT_DEBCONF) {
		$TEMPLATE_CALL ="/usr/share/po-debconf/templates/call-po";
	} else {
		$TEMPLATE_CALL ="/usr/share/po-debconf/templates/call";
	}
}

if ($TEMPLATE_ARG ne "") {
	$TEMPLATE_TRANSLATORS = $TEMPLATE_ARG;
	$TEMPLATE_SUBMIT      = $TEMPLATE_ARG;
	$TEMPLATE_CALL        = $TEMPLATE_ARG;
}

if (defined $NO_DEFAULT) {
	$DEFAULT_ARG = 0;
} elsif ($conf =~ m/^default$/m) {
	$DEFAULT_ARG = 1;
} elsif (!defined $DEFAULT_ARG) {
	$DEFAULT_ARG = 0;
}

if (defined $NO_GZIP) {
	$GZIP_ARG = 0;
} elsif ($conf =~ m/^gzip$/m) {
	$GZIP_ARG = 1;
} elsif (!defined $GZIP_ARG) {
	$GZIP_ARG = 0;
}

if (defined $NO_DEADLINE) {
	undef $DEADLINE_ARG;
} elsif (defined $DEADLINE_ARG) {
	# Use the specified deadline
} elsif ($conf =~ m/^nodeadline$/m) {
	undef $DEADLINE_ARG;
} elsif ($conf =~ m/^deadline\s*(?:\s|=)\s*(.*)$/m) {
	$DEADLINE_ARG = $1;
} else {
	print "
You should specify a deadline to help translators organize their work.
This deadline is usually the date you are planning to make the next
release (or the day before).
Deadline? [+10days] ";
	chomp($DEADLINE_ARG = <STDIN>);

# The default deadline is +10days
	if ($DEADLINE_ARG eq "") {
		$DEADLINE_ARG = "+10days";
	}
}

if (defined $NO_LANGUAGETEAM) {
	$LANGUAGETEAM_ARG = 0;
} elsif (defined $LANGUAGETEAM_ARG) {
	$LANGUAGETEAM_ARG = 1;
} elsif ($conf =~ m/^languageteam$/m) {
	$LANGUAGETEAM_ARG = 1;
} elsif ($conf =~ m/^nolanguageteam$/m) {
	$LANGUAGETEAM_ARG = 0;
} else {
	$LANGUAGETEAM_ARG = 1;
}

while ($conf =~ m/^addlanguageteam\s*(?:\s|=)\s*(.*)$/gm) {
	push @ADDLANGUAGETEAM, $1;
}

if (defined $NO_SUMMARY) {
	$SUMMARY_ARG = 0;
} elsif ($conf =~ m/^summary$/m) {
	$SUMMARY_ARG = 1;
} elsif (!defined $SUMMARY_ARG) {
	$SUMMARY_ARG = 0;
}

if (defined $NO_UTF8) {
	$UTF8 = 0;
} elsif ($conf =~ m/^utf8$/m) {
	$UTF8 = 1;
} elsif (!defined $UTF8) {
	$UTF8 = 0;
}

if (defined $CALL_WITHOUT_TRANSLATORS) {
	$CALL_WITH_TRANSLATORS = 0;
} elsif (defined $CALL_WITH_TRANSLATORS) {
	$CALL_WITH_TRANSLATORS = 1;
} elsif ($conf =~ m/^withtranslators$/m) {
	$CALL_WITH_TRANSLATORS = 1;
} elsif ($conf =~ m/^withouttranslators$/m) {
	$CALL_WITH_TRANSLATORS = 0;
} else {
	# The default. (it will be removed when not in --call mode)
	$CALL_WITH_TRANSLATORS = 1;
}

# Disable --withtranslators if no call for translations are requested with
# --call.
$CALL_WITH_TRANSLATORS = 0 unless defined $CALL;

if ($no_encode and $UTF8) {
	$warn .= "--utf8 requires the Encode perl module.  ".
	         "Turning this option off.\n";
	$UTF8 = 0;
}

if ($MUTT) {
	$MBOX = qx/mutt -Q postponed/;
	if ($MBOX =~ m/^postponed="(.*)"$/) {
		$MBOX = $1;
	} else {
		$MBOX = $ENV{'HOME'}."/postponed";
		warn "Could not find mutt's postpone mailbox with ".
		     " 'mutt -Q postponed'. Using $MBOX.";
	}
}

## Try to find default editor
$EDITOR = $ENV{'EDITOR'} if exists($ENV{'EDITOR'});
$EDITOR = $ENV{'VISUAL'} if exists($ENV{'VISUAL'});

if ($no_zlib && $GZIP_ARG) {
	$warn .= 
	  "Warning: This program requires the libcompress-zlib-perl package in order\n".
	  "         to support the --gzip flag, but it is not installed.\n".
	  "         PO files will not be compressed!\n\n";
	$GZIP_ARG = 0;
}

if ($POTFILE eq "") {
	opendir(DIR, $PODIR);
	foreach my $potFile (grep(/\.pot$/, readdir(DIR))) {
		if (length $POTFILE) {
			die "Too many pot file found.\n".
			    "Please specify one with the --potfile option.\n";
		}
		$POTFILE = $potFile;
	}
	closedir(DIR);
	opendir(DIR, $PODIR);
	if (length $POTFILE) {
		print "Using $POTFILE for the call for translation\n";
	} else {
		warn "No POT file found. You should specify one with the ".
		     "--potfile option, or specify in the mail how to ".
		     "retrieve it."
	}
	closedir(DIR);
}

## Try to find the maintainer e-mail address and the package name

#  Package version
my $PKG_VERSION = "N/A";
#  Expanded into "<package> <version>" if version is found, <package> otherwise
my $PACKAGE_AND_VERSION = "";
if ($PACKAGE_ARG =~ s/_(.*)//) {
	$PKG_VERSION = $1;
}

if ($PACKAGE_ARG eq "" or $FROM_ARG eq "") {
	my $CONTROL = '';
	foreach my $d (@TOPDIRS) {
		$CONTROL = "$d/debian/control" if (-f "$d/debian/control");
	}
	if ($CONTROL eq '') {
		foreach my $d (@TOPDIRS) {
			$CONTROL = "$d/debian/control.in" if (-f "$d/debian/control.in");
		}
	}

if (-f $CONTROL) {
		##  Only read the first stanza
		local $/ = "\n\n";
		open (CNTRL, "< $CONTROL")
			or die "Unable to read $CONTROL: $!\n";
		my $text = <CNTRL>;
		close (CNTRL)
			or die "Unable to close $CONTROL: $!\n";
		if ($PACKAGE_ARG eq "" && $text =~ m/^Source: (.*)/m) {
			$PACKAGE_ARG = $1;
		}

if ($FROM_ARG eq "" && $text =~ m/^Maintainer: (.*)/m) {
			$FROM_ARG = $1;
		}
	}
}
if ($PKG_VERSION eq "N/A") {
	my $CHANGELOG = '';
	foreach my $d (@TOPDIRS) {
		$CHANGELOG = "$d/debian/changelog" if (-f "$d/debian/changelog");
	}
	if (-f $CHANGELOG) {
		#  Version information is not vital, do not abort
		#  if it cannot be retrieved.
		if (open (CHG, "< $CHANGELOG")) {
			while (<CHG>) {
				if (m/^$PACKAGE_ARG\s+$(.*)$\s/) {
					$PKG_VERSION = $1;
				}
				last if m/^ --/;
			}
		}
		close (CHG);
	}
}
if ($PKG_VERSION eq 'N/A' and $PACKAGE_ARG eq '') {
	# Try to read the PACKAGEand VERSION from the .pot file
	Verbose("PODIR: $PODIR");
	Verbose("POTFILE: $POTFILE");
	my $content = &ReadFile($PODIR . "/" . $POTFILE);
	$content =~ m/\n"Project-Id-Version:\s*([^"]*)\s*\\n"\n/i;
	my $package_and_version = $1;
	if ($package_and_version =~ m/^(.+)\s+(.+?)$/i) {
		$PACKAGE_ARG = $1;
		$PKG_VERSION = $2;
	} else {
		$PACKAGE_ARG = $package_and_version;
	}
}
$PACKAGE_AND_VERSION = $PACKAGE_ARG .
	($PKG_VERSION ne 'N/A' ? " ".$PKG_VERSION : "");
Verbose("Package: $PACKAGE_ARG");
Verbose("Version: $PKG_VERSION");
Verbose("Maintainer: $FROM_ARG");

# If the specified deadline starts with a '+', it is an offset from now.
if ($DEADLINE_ARG =~ m/^\+/) {
	my $cmd = "LC_ALL=C date -R -d \"$DEADLINE_ARG\"";
	$DEADLINE_ARG = qx/$cmd/;
	if ($? != 0) {
		die "podebconf-report-po: failed to execute '$cmd': $!.\n";
	}
	chomp $DEADLINE_ARG;
}

if ($DEADLINE_ARG ne "") {
	$DEADLINE_ARG = "\n\nThe deadline for receiving the updated translation is\n$DEADLINE_ARG.";
}

my $REPLY = '';
if ($BTS_ARG =~ m/^\d+$/) {
	$BTS_ARG .= "\@bugs.debian.org";
	$REPLY = "Please respect the Reply-To: field and send your updated translation to\n$BTS_ARG.";
} else {
	$REPLY = "Please send the updated file to me, or submit it as a wishlist bug\nagainst <package>.";
}

PREPARE_MAIL:
if ($SUBMIT_ARG) {
	$BODY = &ReadFile($TEMPLATE_SUBMIT);
	$SUBJECT = $SUBJECT_SUBMIT;
} elsif (defined $CALL) {
	$CALL="Debian Internationalization <debian-i18n\@lists.debian.org>"
		unless length $CALL;
	$BODY = &ReadFile($TEMPLATE_CALL);
	$SUBJECT = $SUBJECT_CALL;
} else {
	$CALL="";
	$BODY = &ReadFile($TEMPLATE_TRANSLATORS);
	$SUBJECT = $SUBJECT_TRANSLATOR;
}

## Apply the values to the subject and to the body of the message

$SUBJECT =~ s/<package>/$PACKAGE_ARG/g;
$SUBJECT =~ s/<version>/$PKG_VERSION/g;
$SUBJECT =~ s/<package_and_version>/$PACKAGE_AND_VERSION/g;

## Check every file with .po extension in $PODIR ...
Verbose("Checking for PO files in $PODIR");
opendir(DIR, $PODIR);
my $poFiles = {};
my $statistics = "language        translated     fuzzy     untranslated\n".
                 "-----------------------------------------------------\n";
if (defined $CALL and length $CALL) {
	foreach my $poFile (grep(/\.po$/, sort readdir(DIR))) {
		$poFiles->{$poFile} = {};
		my $cmd = "LC_ALL=C /usr/bin/msgfmt -o /dev/null --stat $PODIR/$poFile 2>&1";
		my $stats = qx/$cmd/;
		chomp $stats;
		my ($t, $f, $u) = ("", "", "");
		my $lang = $poFile;
		$lang =~ s/\.po$//;
		if ($stats =~ s/^([0-9]+) translated message[s ,]*//) {
			$t = $1;
		}
		if ($stats =~ s/^([0-9]+) fuzzy translation[s ,]*//) {
			$f = $1;
		}
		if ($stats =~ s/^([0-9]+) untranslated message[s ,]*//) {
			$u = $1;
		}
		$statistics .= sprintf("  %-10s%10s  %10s    %10s\n", $lang, $t, $f, $u);
	}
} else {
foreach my $poFile (grep(/\.po$/, readdir(DIR))) {
	local $/ = "\n\n";
	$poFiles->{$poFile} = {};
	my $outdated = 0;
	my $found_header = 0;
	open (PO, "< $PODIR/$poFile")
		or die "Unable to read $PODIR/$poFile: $!\n";
	while (<PO>) {
		if ($found_header == 0 && m/msgid ""\nmsgstr/s) {
			$found_header = 1;
			#  Concatenate lines
			s/"\n"//g;
			if (m/\\nLast-Translator: (.*?)\\n/ && $1 ne 'FULL NAME <EMAIL@ADDRESS>') {
				$poFiles->{$poFile}->{translator} = $1;
			} else {
				$warn .= "Warning: $poFile:  Unable to determine last translator.  Skipping file!\n";
				last;
			}
			if (m/\\nContent-Type: [^;]*; charset=(.*?)\\n/) {
				$poFiles->{$poFile}->{charset} = $1;
			} else {
				$warn .= "Warning: $poFile:  Unable to determine charset.  Skipping file!\n";
				last;
			}
			if ($LANGUAGETEAM_ARG && m/\\nLanguage-Team: (.*?)\\n/) {
				$poFiles->{$poFile}->{team} = $1
					if $1 ne 'LANGUAGE <LL@li.org>';
			}

my $lang = $poFile;
			$lang =~ s/\.po$//;
			if ($LANGUAGETEAM_ARG) {
			foreach my $lang_list (@ADDLANGUAGETEAM) {
				next unless ($lang_list =~ m/^$lang:(.*)$/);

my $list = $1;
				my $list_addr = $1;
				$list_addr =~ s/^.*?<([^<>]*)>.*?$/$1/;
				$poFiles->{$poFile}->{team} = ""
					unless (defined $poFiles->{$poFile}->{team});
				next if ($poFiles->{$poFile}->{team} =~ m/(^|<)\Q$list_addr\E(>|$)/);

if (length $poFiles->{$poFile}->{team}) {
					$poFiles->{$poFile}->{team} .= ", ";
				}
				$poFiles->{$poFile}->{team} .= $list;
			}
			}
			next;
		}
		#  Ignore outdated msgids
		next unless m/^msgid /m;
		#  Check for fuzzy or missing translations
		s/\n+$//s;
		if (m/^#, .*fuzzy/m or m/\nmsgstr ""$/s) {
			$outdated = 1;
			last;
		}
	}
	if ($UTF8) {
		Encode::from_to($poFiles->{$poFile}->{translator},
		                $poFiles->{$poFile}->{charset},
		                "UTF-8");
		Encode::from_to($poFiles->{$poFile}->{team},
		                $poFiles->{$poFile}->{charset},
		                "UTF-8");
	}
	close (PO)
		or die "Unable to close $PODIR/$poFile: $!\n";
	delete $poFiles->{$poFile} unless $outdated;
}
closedir(DIR);
if (keys %$poFiles) {
	print "Outdated files: ".join(' ', keys %$poFiles)."\n";
} else {
	print "No outdated files\n";
	exit(0);
}
}

my %langs=();
foreach (split(",", $LANGS)) {
	$langs{$_.".po"} = 1;
}

my $filelist = '';
if ($SUBMIT_ARG or length $CALL) {
	$filelist = join(' ', sort keys %$poFiles)."\n";
} else {
	# Try to detect invalid emails.
	# This is very frequent for language teams.
	my $warn_invalid_email = 0;
	foreach my $poFile (sort keys %$poFiles) {
		if ($poFiles->{$poFile}->{translator} !~ /^(.*<)?[^@]+@[^@]+\.[A-Za-z]{2,4}>?$/) {
			$warn_invalid_email = 1;
			last;
		}
		if (defined($poFiles->{$poFile}->{team}) and
		    $poFiles->{$poFile}->{team} !~ /^(.*<)?[^@]+@[^@]+\.[A-Za-z]{2,4}>?$/) {
			$warn_invalid_email = 1;
			last;
		}
	}
	if ($warn_invalid_email) {
		$filelist .= "#\n"
		            ."#  WARNING: Some email addresses seem to be invalid.\n"
		            ."#           You should remove them and inform the translators separately.\n"
		            ."#\n";
	}
	# Add the list of PO files.
	foreach my $poFile (sort keys %$poFiles) {
		$filelist .= '### ';
		$filelist .= '[' .((!%langs or $langs{$poFile})?'*':' '). '] ';
		$filelist .= $poFile . ': ' . $poFiles->{$poFile}->{translator};
		$filelist .= ', ' . $poFiles->{$poFile}->{team} if defined($poFiles->{$poFile}->{team});
		$filelist .= "\n";
	}
	#  Remove non-ASCII characters
	$filelist = DropNonASCII($filelist)
		unless ($UTF8);
}
$filelist =~ s/\n$//s;

my %headers = ();

OPEN_EDITOR:
ReplaceTags();
$BODY = &OpenEditor($EDITOR, $BODY) if not $DEFAULT_ARG;
ReplaceTags();

%headers = &ParseHeaders($BODY);
my %To = &ParseTo($BODY);

print STDERR $warn if $warn ne '';

my @mails = ();
if ($SUBMIT_ARG) {
	my %mail = (
		From => $FROM_ARG,
		To => "maintonly\@bugs.debian.org",
		Subject => $SUBJECT,
		'X-Mail-Originator' => "$PROGRAM $VERSION"
	);
	$mail{body} = encode_qp(&RemoveHeaders($BODY));
	@mails = (\%mail);
} elsif (length $CALL) {
	my %mail = (
		From => $FROM_ARG,
		To => $CALL,
		Subject => $SUBJECT,
		'X-Mail-Originator' => "$PROGRAM $VERSION"
	);
	my $ext = ($GZIP_ARG ? '.gz' : '');
		my $file = $POTFILE;
		my $content = &ReadFile($PODIR . "/" . $file);
		$content = Compress::Zlib::memGzip($content) if $GZIP_ARG;
		my $file_encoded = encode_base64($content);
		my $contentType = ($GZIP_ARG ? "application/octet-stream": "text/x-gettext; name=\"$file\"; charset=\"US-ASCII\"");
		my $boundary = "=" . time() . "=";
		$mail{'content-type'} = "multipart/mixed; boundary=\"$boundary\"";
		my $charset = $UTF8?"utf-8":"us-ascii";
		my $body = &RemoveHeaders($BODY);
		$mail{body} = <<_EOF_;
--$boundary
Content-Type: text/plain; charset="$charset"
Content-Transfer-Encoding: quoted-printable

$body

_EOF_
		if ($SEND_MESSAGE) {
			$mail{body} .= <<_EOF_;
--$boundary--
_EOF_
		} else {
			$mail{body} .= <<_EOF_;
--$boundary
Content-Type: $contentType
Content-Transfer-Encoding: base64
Content-Disposition: attachment; filename="$file$ext"

$file_encoded
--$boundary--
_EOF_
		}
	@mails = (\%mail);
} else {
	my $body = encode_qp(&RemoveHeaders($BODY));
	my $ext = ($GZIP_ARG ? '.gz' : '');
	foreach my $file (keys %$poFiles) {
		if (defined $To{$file}) {
			my $content = &ReadFile($PODIR . "/" . $file);
			$content = Compress::Zlib::memGzip($content) if $GZIP_ARG;
			my $file_encoded = encode_base64($content);
			my $contentType = ($GZIP_ARG ? "application/octet-stream" : "text/x-gettext; name=\"$file\"; charset=\"$poFiles->{$file}->{charset}\"");
			my %mail = (
				From => $FROM_ARG,
				To => $To{$file},
				Subject => $SUBJECT,
				'X-Mail-Originator' => "$PROGRAM $VERSION"
			);

my $boundary = "=" . time() . "=";
			$mail{'content-type'} = "multipart/mixed; boundary=\"$boundary\"";
			my $charset = $UTF8?"utf-8":"us-ascii";
			$mail{body} = <<_EOF_;
--$boundary
Content-Type: text/plain; charset="$charset"
Content-Transfer-Encoding: quoted-printable

$body

_EOF_
			if ($SEND_MESSAGE) {
				$mail{body} .= <<_EOF_;
--$boundary--
_EOF_
			} else {
				$mail{body} .= <<_EOF_;
--$boundary
Content-Type: $contentType
Content-Transfer-Encoding: base64
Content-Disposition: attachment; filename="$file$ext"

$file_encoded
--$boundary--
_EOF_
			}

push(@mails, \%mail);
		}
	}
}

#  Add mail headers and remove non-ASCII characters
foreach my $refmail (@mails) {
	foreach my $h (keys(%headers)) {
		if ($UTF8) {
			$refmail->{$h} = encode_qp($headers{$h}, "");
			$refmail->{$h} =~ s/=$//m;
			$refmail->{$h} =~ s/(\S*=\S*)/=?utf-8?Q?$1?=/g;
		} else {
			$refmail->{$h} = &DropNonASCII($headers{$h});
		}
	}
	foreach my $h (qw(From To Subject)) {
		if ($UTF8) {
			unless ($refmail->{$h} =~ m/=\?utf-8\?Q\?/) {
				$refmail->{$h} = encode_qp($refmail->{$h}, "");
				$refmail->{$h} =~ s/=$//m;
				$refmail->{$h} =~ s/(\S*=\S*)/=?utf-8?Q?$1?=/g;
			}
		} else {
			$refmail->{$h} = &DropNonASCII($refmail->{$h});
		}
	}
	$refmail->{smtp} = $SMTP_ARG if ($SMTP_ARG ne '');
}

if (!$FORCE_ARG) {
	my $answers = ($DEFAULT_ARG)?"[y/N/?]":"[y/N/e/?]";
	my $with_mutt = "";
	$with_mutt = " (with mutt)" if $MUTT;
	QUESTION:
	print "The following files have been selected:\n";
	foreach my $poFile (sort keys %$poFiles) {
		next unless defined $To{$poFile};
		print "  $poFile To: $To{$poFile}\n";
	}
	print "End of files\n";
	if ($SUBMIT_ARG) {
		print "Ready to send$with_mutt the bug report against the package $PACKAGE_ARG, are you sure? $answers ";
	} elsif (length $CALL) {
		print "Ready to send$with_mutt the call for translation to $CALL, are you sure? $answers ";
	} else {
		print "Ready to send$with_mutt the emails, are you sure? $answers ";
	}
	my $line = <>;
	chop $line;
	if ($line eq "e" or $line eq "E") {
		goto OPEN_EDITOR unless ($DEFAULT_ARG);
	} elsif ($line eq "?") {
		print "y	send the mail(s).\n".
		      "?	display this help message.\n".
		      ($DEFAULT_ARG?"":"e	reopen the editor.\n").
		      "N	exit, without sending mails.\n";
		goto QUESTION;
	}
	exit(0) if ($line ne "Y" and $line ne "y");
}

#  Make Perl compiler quiet
print $Mail::Sendmail::error . $Mail::Sendmail::error if 0;
foreach my $mail (@mails) {
	if (defined $MBOX and length $MBOX) {
		Postpone($mail);
	} else {
		sendmail(%{$mail})
			or print "Couldn't send the email: $Mail::Sendmail::error\n";
	}
}
if ($SUMMARY_ARG and not $CALL) {
	my %summary = (
		From => $FROM_ARG,
		To => $FROM_ARG,
		Subject => $SUBJECT,
		'X-Mail-Originator' => "$PROGRAM $VERSION"
	);
	$summary{body} = "List of outdated files:\n";
	foreach my $poFile (sort keys %$poFiles) {
		$summary{body} .= '  ' . $poFile . ': ' . $poFiles->{$poFile}->{translator};
		$summary{body} .= ', ' . $poFiles->{$poFile}->{team} if defined($poFiles->{$poFile}->{team});
		$summary{body} .= "\n";
	}
	$summary{body} .= "Translators received the mail below.\n\n";
	$summary{body} .= encode_qp(&RemoveHeaders($BODY));
	if (defined $MBOX and length $MBOX) {
		Postpone(\%summary);
	} else {
		sendmail(%summary)
			or print "Couldn't send the email: $Mail::Sendmail::error\n";
	}
}

if ($MUTT) {
	if (system("mutt -p") >> 8 != 0) {
		die "Problem running mutt -p: $!\n";
	}
}

if ($CALL_WITH_TRANSLATORS) {
	print "Now, prepare the mail for translators...";
	undef $CALL;
	undef $CALL_WITH_TRANSLATORS;
	goto PREPARE_MAIL;
}

exit(0);

###############################################################################

sub ReplaceTags {
	$BODY =~ s/<reply>/$REPLY/g;
	$BODY =~ s/<reply-to>/$BTS_ARG/g;
	$BODY =~ s/\n# Reply-To: \n/\n/;
	$BODY =~ s/<subject>/$SUBJECT/g;
	$BODY =~ s/<package>/$PACKAGE_ARG/g if ($PACKAGE_ARG ne '');
	$BODY =~ s/<version>/$PKG_VERSION/g if ($PKG_VERSION ne '');
	$BODY =~ s/<package_and_version>/$PACKAGE_AND_VERSION/g
		if ($PACKAGE_AND_VERSION ne '');
	$BODY =~ s/<from>/$FROM_ARG/g;
	$BODY =~ s/\n<deadline>/$DEADLINE_ARG/g;
	$BODY =~ s/<statistics>\n/$statistics/g;
	$BODY =~ s/<filelist>/$filelist/g;
}

sub OpenEditor
{
	my $editor = shift;
	my $body = shift;
	my $opts = "";
	my ($fh, $tmpnam) = tempfile("podebconf-report-po.mail.tmp.XXXXXX",
	                             UNLINK => 0,
	                             TMPDIR => 1);

print $fh $body;
	close($fh)
		or die ("Couldn't close $tmpnam: $!\nExiting!\n");

$opts = "-f" if ($editor eq "vim");
	system("$editor $opts $tmpnam");

$body = &ReadFile($tmpnam) if (-f $tmpnam);
	unlink($tmpnam);

return $body;
}

sub ParseHeaders
{
	my $body = shift;
	my %headers = ();

while ($body =~ s/^#[ \t]*([^\n]*)\n//s) {
		my $comment = $1;
		if ($comment =~ m/^([a-zA-Z0-9_-]+):\s*([^\n]+)$/) {
			$headers{$1} = $2;
		}
	}
	return %headers;
}

sub ParseTo
{
	my $body = shift;
	my %To = ();

while ($body =~ s/^#[ \t]*([^\n]*)\n//s) {
		my $comment = $1;
		if ($comment =~ s/^##[ \t]*\[(?:\*|x|X)\][ \t]*([^:]*):[ \t]*([^\n]*)$//s) {
			$To{$1} = $2;
		}
	}
	return %To;
}

sub RemoveHeaders
{
	my $body = shift;
	#  First remove comments
	1 while $body =~ s/^#[^\n]*\n//s;
	#  Optional empty lines
	$body =~ s/^\s+//s;
	return $body;
}

sub DropNonASCII {
	my $text = shift;
	$text =~ s/[\x80-\xff]/?/g;
	return $text;
}

sub ReadFile
{
	my $file = shift;
	local $/ = undef;
	open(FILE, "< $file")
		or die ("Couldn't read $file: $!\nExiting!\n");
	my $body = <FILE>;
	close(FILE)
		or die ("Couldn't close $file: $!\nExiting!\n");
	return $body;
}

## Handle invalid arguments
sub Help_InvalidOption
{
	print STDERR "Try `${PROGRAM} --help' for more information.\n";
	exit 1;
}

## Print the usage message and exit
sub Help_PrintHelp
{
	print <<_EOF_;

Usage: ${PROGRAM} [OPTIONS]
Send outdated debconf PO files to the last translators.

Options:
  --addlanguageteam=LANG:LIST
                        Send a copy of the messages for language LANG also
                        to the LIST (unless it is already the language team).
  --bts=BUGNUMBER       specify the Debian bug number to set as reply-to
  --call[=LIST]         send a call for translations to the LIST (or to
                        the Debian I18N mailing list by default
  --conf                
  --noconf
  --deadline=DEADLINE   specify the deadline for receiving the updated
                        translations
  --default             don't open the editor and use the template as is
  --nodefault
  -f, --force           send the email without confirmation
  --noforce
  --from=MAINTAINER     specify the name and the email address of the sender
  --gzip                compress PO files with gzip
  --nogzip
  --help                display this help and exit
  --langs=LANGUAGES     restrict sending emails only to these languages
  --languageteam        send the email also to the Language Team
  --nolanguageteam
  --mutt                send the mails with mutt. This set the --postpone
                        argument to the mutt's postponed parameter or
                        \$HOME/postponed
  --notdebconf          this is not for debconf translation. Do not
                        mention debconf in the subject and message
  --package=PACKAGE     specify the name of the package
  --podir=DIRECTORY     specify where are located the PO files
  --postpone=MBOX       do not send emails, append them in MBOX. This file
                        can be used as a postponed mailbox with mutt -p.
  --potfile=FILE        when used with --call, specifies the POT file to
                        attach to the call for translations
  --sendmessage         only send a message, without any attachment
  --smtp=SERVER         specify SMTP server for mailing (default localhost)
  --submit              send a bug report against the package with a report
                        of the outdated debconf translations
  --summary             send a status report to the maintainer with the list
                        of emails sent to translators
  --nosummary
  --utf8                send the mail in UTF-8
  --noutf8
  --version             display version information and exit
  -v, --verbose         display additional information
  --noverbose
  --templatecall=TEMPLATE
                        specify file to use it as template for the emails
  --templatesubmit=TEMPLATE
                        specify file to use it as template for the emails
  --templatetranslators=TEMPLATE
                        specify file to use it as template for the emails
  --template=TEMPLATE   specify file to use it as template for the emails
  --notemplate
  --withtranslators     when used with --call, specifies that request for
                        translation updates must be sent to the translators
  --withouttranslators

_EOF_
	exit 0;
}

## Print the version text and exit
sub Help_PrintVersion
{
	print <<_EOF_;
${PROGRAM} $VERSION
Copyright (C) 2004-2006 Fabio Tranchitella and Denis Barbier.
Copyright (C) 2007      Nicolas François
This is free software; see the source for copying conditions.  There is NO
warranty; not even for MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
_EOF_
	exit 0;
}

sub Verbose
{
	my $msg = shift;
	return unless $VERBOSE_ARG;
	$msg =~ s/^/**${PROGRAM}: /mg;
	print STDERR $msg."\n";
}

sub Postpone {
	my $mail = shift;
	if (eval { require Mail::Box::Manager }) {
		import Mail::Box::Manager;
		my $mgr = new Mail::Box::Manager;

my $folder = $mgr->open(folder => $MBOX,
		                        access => 'a',
		                        create => 1);
		my $msg = Mail::Message->build
			( From => ${$mail}{'From'}
			, To => ${$mail}{'To'}
			, Subject => ${$mail}{'Subject'}
			, 'X-Mail-Originator' => ${$mail}{'X-Mail-Originator'}
			, 'Content-Type' => ${$mail}{'content-type'}
			, data => ${$mail}{body}
			);
		$mgr->appendMessage($folder, $msg);
		$folder->write();
		$mgr->close();
	} else {
		die "The --postpone and --mutt options require the ".
		    "perl Mail::Box package. Please install the Debian ".
		    "libmail-box-perl package if you want to use these ".
		    "options. No mail written or sent.";
	}
}

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