File: intltool-update.in

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#!@INTLTOOL_PERL@ -w

#  The Intltool Message Updater
#
#  Copyright (C) 2000 Free Software Foundation.
#
#  Intltool 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.
#
#  Intltool 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, write to the Free Software
#  Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
#
#  As a special exception to the GNU General Public License, if you
#  distribute this file as part of a program that contains a
#  configuration script generated by Autoconf, you may include it under
#  the same distribution terms that you use for the rest of that program.
#
#  Author(s): Kenneth Christiansen

## Release information
my $PROGRAM  = "intltool-update";
my $VERSION  = "0.14";
my $_PACKAGE = "intltool";

## Loaded modules
use strict;
use Getopt::Long;
use Cwd;
use File::Copy;
use File::Find;

## Scalars used by the option stuff
my $LANG     	   = $ARGV[0];
my $HELP_ARG 	   = 0;
my $VERSION_ARG    = 0;
my $DIST_ARG	   = 0;
my $POT_ARG	   = 0;
my $HEADERS_ARG    = 0;
my $MAINTAIN_ARG   = 0;
my $REPORT_ARG     = 0;
my $VERBOSE	   = 0;
my $GETTEXT_PACKAGE = "";

my @languages;
my %po_files_by_lang = ();

# Regular expressions to categorize file types.
# If we split this up into pieces we could probably
# share code with determine_type, but for now each must
# be maintained separately.

my $xml_extension = 
"xml(\.in)*|".		# .in is not required
"ui|".
"glade(\.in)*|".	# .in is not required
"scm(\.in)*|".		# .in is not required
"oaf(\.in)+|".
"etspec|".
"sheet(\.in)+|".
"pong(\.in)+";

my $ini_extension =
"desktop(\.in)+|".
"caves(\.in)+|". 
"directory(\.in)+|".
"soundlist(\.in)+|".
"keys(\.in)+|".
"server(\.in)+";

## Always print as the first thing
$| = 1;

## Give error if script is run without an argument
if (! $LANG){
    print "${PROGRAM}:  missing file arguments\n";
    print "Try `${PROGRAM} --help' for more information.\n";
    exit;
}

## Handle options
GetOptions (
	    "help|h"	  	  => \$HELP_ARG,
	    "version|v" 	  => \$VERSION_ARG,
	    "dist|d"		  => \$DIST_ARG,
	    "pot|p"		  => \$POT_ARG,
	    "headers|s"		  => \$HEADERS_ARG,
	    "maintain|m"	  => \$MAINTAIN_ARG,
	    "report|r"		  => \$REPORT_ARG,
	    "verbose|x"		  => \$VERBOSE,
	    "gettext-package|g=s" => \$GETTEXT_PACKAGE,
	    ) or &invalid_option;

my $PACKAGE = $GETTEXT_PACKAGE || &find_package_name;

## Use the supplied arguments
## Check for options.
## This section will check for the different options.

sub split_on_argument {

    if ($VERSION_ARG) {
	&version;

    } elsif ($HELP_ARG) {
	&help;

    } elsif ($DIST_ARG) {
        &merging;
        &status;

    } elsif ($POT_ARG) {
        &gen_headers;
        &generate_pot;

    } elsif ($HEADERS_ARG) {
        &gen_headers;
        exit;

    } elsif ($MAINTAIN_ARG) {
        &maintain;

    } elsif ($REPORT_ARG) {
        &show_status;

    } elsif ($LANG) {
	if ($LANG =~ /^-/){ ## not an option
	    &help;
	} else {
	    &main;
 	}

    } else {
	&help;
    }
}

&split_on_argument;

sub main
{
   if(-s "$LANG.po"){
	print "Working, please wait..." unless $VERBOSE;
        &gen_headers;
	&generate_pot;
	&merging;
	&status;
   }

   ## Report error if the language file supplied
   ## to the command line is non-existent
   else {
	&not_existing;
   }
}

sub determine_type($) {
   my $type = $_;

   my $gettext_type;

   if ($type =~ /\[type: (gettext\/[^\]].*)]/) {
        $gettext_type=$1;
   }
   elsif ($type =~ /(?:xml(\.in)*|ui|oaf(?:\.in)+|server(?:\.in)+|sheet(?:\.in)+|pong(?:\.in)+|etspec)$/) {
        $gettext_type="gettext\/xml";
   }
   elsif ($type =~ /glade(\.in)*$/) {
        $gettext_type="gettext\/glade";
   }
   elsif ($type =~ /(?:desktop(?:\.in)+|caves(?:\.in)+|directory(?:\.in)+|soundlist(?:\.in)+)$/) { 
        $gettext_type="gettext\/ini";
   }
   elsif ($type =~ /scm(\.in)*$/) {
        $gettext_type="gettext\/scheme";
   }
   elsif ($type =~ /keys(\.in)+$/) {
        $gettext_type="gettext\/keys";
   }
   else { $gettext_type=""; }

   return $gettext_type;
}

sub version{

    ## Print version information
    print "${PROGRAM} (${_PACKAGE}) $VERSION\n";
    print "Written by Kenneth Christiansen <kenneth\@gnu.org>, 2000-2002.\n\n";
    print "Copyright (C) 2000-2002 Free Software Foundation, Inc.\n";
    print "This is free software; see the source for copying conditions.  There is NO\n";
    print "warranty; not even for MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.\n";
    exit;
}

sub help
{
    ## Print usage information
    print "Usage: ./${PROGRAM} [OPTIONS] ...LANGCODE\n";
    print "Updates pot files and merge them with the translations.\n\n";
    print "  -H, --help                   shows this help page\n";
    print "  -P, --pot                    generate the pot file only\n";
    print "  -S, --headers                generate the XML headerfiles in POTFILES.in\n";
    print "  -M, --maintain               search for missing files in POTFILES.in\n";
    print "  -R, --report                 creates a status report for the module.\n";
    print "  -X, --verbose                show lots of feedback\n";
    print "  -V, --version                shows the version\n";
    print "\nExamples of use:\n";
    print "${PROGRAM} --pot    just creates a new pot file from the source\n";
    print "${PROGRAM} da       created new pot file and updated the da.po file\n\n";
    print "Report bugs to bugzilla.gnome.org, module 'intltool'.\n";
    exit;
}

sub maintain
{
    my (@buf_i18n_plain,
	@buf_i18n_xml,
	@buf_i18n_ini,
	@buf_potfiles,
	@buf_potfiles_ignore,
	@buf_allfiles,
	@buf_allfiles_sorted,
	@buf_potfiles_sorted
    );

    ## Search and find all translatable files
    find sub { push @buf_i18n_plain, "$File::Find::name" if /\.(c|y|cc|c\+\+|h|gob)$/ }, "..";
    find sub { push @buf_i18n_xml, "$File::Find::name" if /\.($xml_extension)$/ }, "..";
    find sub { push @buf_i18n_ini, "$File::Find::name" if /\.($ini_extension)$/ }, "..";

    open(POTFILES, "POTFILES.in") || die "$PROGRAM:  there's no POTFILES.in!!!\n";
    @buf_potfiles = grep /^[^#]/, <POTFILES>;

    print "Searching for missing translatable files...\n";

    ## Check if we should ignore some found files, when
    ## comparing with POTFILES.in
    foreach my $ignore ("POTFILES.skip", "POTFILES.ignore") {
        if (-s $ignore) {
            open FILE, $ignore;
            while (<FILE>) {
                if (/^[^#]/){
                    push @buf_potfiles_ignore, $_;
                }
            }
            print "Found $ignore: Ignoring files...\n";
            @buf_potfiles = (@buf_potfiles_ignore, @buf_potfiles);
        }
    }

    foreach my $file (@buf_i18n_plain){
        open FILE, "<$file";
        while (<FILE>) {
            if (/_\(\"/){
		## Remove the first 3 chars and add newline
		push @buf_allfiles, unpack("x3 A*", $file) . "\n";
                last;
            }
        }
    }

    foreach my $file (@buf_i18n_xml){
        open FILE, "<$file";
        while (<FILE>) {
            if (/\s_(.*)=\"/){
                ## Remove the first 3 chars and add newline
                push @buf_allfiles, unpack("x3 A*", $file) . "\n";
                last;
            }
        }
    }

    foreach my $file (@buf_i18n_ini){
        open FILE, "<$file";
        while (<FILE>) {
            if (/_(.*)=/){
                ## Remove the first 3 chars and add newline
                push @buf_allfiles, unpack("x3 A*", $file) . "\n";
                last;
            }
        }
    }


    @buf_allfiles_sorted = sort (@buf_allfiles);
    @buf_potfiles_sorted = sort (@buf_potfiles);

    my %in2;
    foreach (@buf_potfiles_sorted) {
        $in2{$_} = 1;
    }

    my @result;

    foreach (@buf_allfiles_sorted){
        if (!exists($in2{$_})){
            push @result, $_
        }
    }

    ## Save file with information about the files missing
    ## if any, and give information about this procedure.
    if (@result) {
        open OUT, ">missing";
        print OUT @result;
        print "\nHere is the result:\n\n", @result, "\n";
        print "The file \"missing\" has been placed in the current directory.\n";
        print "Files supposed to be ignored should be placed in \"POTFILES.skip\"\n";
    }

    ## If there is nothing to complain about, notify the user
    else{
        print "\nAll files containing translations are present in POTFILES.in.\n";
    }
}

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

sub gen_headers
{
    my $EXTRACT = `which intltool-extract 2>/dev/null`;
    chomp $EXTRACT;

    $EXTRACT = $ENV{"INTLTOOL_EXTRACT"} if $ENV{"INTLTOOL_EXTRACT"};

    ## Generate the .h header files, so we can allow glade and
    ## xml translation support
    if (! -s $EXTRACT)
    {
	print "\n *** The intltool-extract script wasn't found!"
	     ."\n *** Without this intltool-update can not generate files.\n";
	exit;
    }
    else
    {
        open FILE, "<POTFILES.in";
        while (<FILE>) {
           chomp;

           ## Find xml files in POTFILES.in and generate the
           ## files with help from the extract script

	   my $gettext_type=&determine_type($1);

           if (/\.($xml_extension|$ini_extension)$/ || /^\[/){
	       $_ =~ s/^\[[^\[].*]\s*//;
               my $filename = "../$_";

               if ($VERBOSE){
                   system($EXTRACT, "--update", "--type=$gettext_type", $filename);
               } else {
	 	   system($EXTRACT, "--update", "--type=$gettext_type", "--quiet", $filename);
               }
           }
       }
       close FILE;
   }
}

sub generate_pot
{
    ## Generate the potfiles from the POTFILES.in file

    print "Building the $PACKAGE.pot...\n" if $VERBOSE;

    move("POTFILES.in", "POTFILES.in.old");

    open INFILE, "<POTFILES.in.old";
    open OUTFILE, ">POTFILES.in";
    while (<INFILE>) {
        s/\.($xml_extension|$ini_extension)$/$&.h/;
        s/^\[.*]\s*(.*)/$1.h/;
        print OUTFILE $_;
    }
    close OUTFILE;
    close INFILE;

    # FIXME: Convert to use system ()

    my $gettext_test   ="test \! -f $PACKAGE\.po \|\| \( rm -f \.\/$PACKAGE\.pot "
                       ."&& mv $PACKAGE\.po \.\/$PACKAGE\.pot \)";

    system ("xgettext", "--default-domain\=$PACKAGE", 
			"--directory\=\.\.",
	   		"--add-comments", 
			"--keyword\=\_", 
			"--keyword\=N\_", 
			"--keyword\=U\_",
	   		"--files-from\=\.\/POTFILES\.in");

    system ($gettext_test);

    print "Wrote $PACKAGE.pot\n" if $VERBOSE;

    move ("POTFILES.in.old", "POTFILES.in");

    print "Removing generated header (.h) files..." if $VERBOSE;

    open FILE, "<POTFILES.in";

    while (<FILE>)
    {
        chomp;
        unlink "../$_.h" if /\.($xml_extension|$ini_extension)$/;
    }

    close FILE;
    print "done\n" if $VERBOSE;
}

sub merging
{
    if ($ARGV[1]) {
        $LANG   = $ARGV[1];
    } else {
	$LANG   = $ARGV[0];
    }

    if ($ARGV[0] ne "--dist" && $ARGV[0] ne "-D") {
        print "Merging $LANG.po with $PACKAGE.pot..." if $VERBOSE;
    }

    &perform_merge($LANG);
    ## Remove the "messages" trash file generated by gettext
    unlink "messages";
}

sub perform_merge
{
    my ($LANG) = @_;

    copy ("$LANG.po", "$LANG.po.old") || die "copy failed: $!";

    ## Preform merge
    system ("msgmerge", "$LANG.po.old", "$PACKAGE.pot", "-o", "$LANG.po");

    ## Remove the backup file
    unlink "$LANG.po.old";
}

sub not_existing
{
    ## Report error if supplied language file is non-existing
    print "$PROGRAM:  sorry, $LANG.po does not exist!\n";
    print "Try `$PROGRAM --help' for more information.\n";
 
    exit;
}

sub gather_po_files
{
    my @po_files = glob("./*.po");

    @languages = map (&po_file2lang, @po_files);

    foreach my $lang (@languages) {
	$po_files_by_lang{$lang} = shift (@po_files);
    }
}

sub po_file2lang
{
    my $tmp = $_;
    $tmp =~ s/^.*\/(.*)\.po$/$1/;
    return $tmp;
}

sub status
{
    ## Print statistics
    system ("msgfmt", "--statistics", "$LANG.po");
    print "\n";
}

sub show_status
{
    &gen_headers;
    &generate_pot;
    &gather_po_files;

    foreach my $lang (@languages){
	print "$lang: ";
	&perform_merge($lang);
    }

    print "\n\n * Current translation support in $PACKAGE \n\n";

    foreach my $lang (@languages){
        print "$lang: ";
 	## Print statistics
	system ("msgfmt", "--statistics", "$lang.po");
    }
}

sub find_package_name
{
    my $base_dirname = getcwd();
    $base_dirname =~ s@.*/@@;

    my ($conf_in, $src_dir);

    if ($base_dirname eq "po") {
        if (-f "../configure.in") {
            $conf_in = "../configure.in";
        } else {
	    my $makefile_source;
	    local (*IN);
	    open (IN, "<Makefile") || die "can't open Makefile: $!";

	    while (<IN>) {
		if (/^top_srcdir[ \t]*=/) {
		    $src_dir = $_;
		    # print "${src_dir}\n";

		    $src_dir =~ s/^top_srcdir[ \t]*=[ \t]*([^ \t\n\r]*)/$1/;
		    # print "${src_dir}\n";
		    chomp $src_dir;
		    $conf_in = "$src_dir" . "/configure.in" . "\n";
		    last;
		}
	    }
	    $conf_in || die "Cannot find top_srcdir in Makefile."
        }

        my $conf_source; {
           local (*IN);
           local $/; # slurp mode
           open (IN, "<$conf_in") || die "can't open $conf_in: $!";
           $conf_source = <IN>;
        }

	my $name = "";
	$name = $1 if $conf_source =~ /^AM_INIT_AUTOMAKE\(([^,\)]+)/m;
	$name = $1 if $conf_source =~ /^GETTEXT_PACKAGE=(\S+)/m;
	if ($name =~ /^[\$](\S+)/) {
            return $1 if $conf_source =~ /^\s*$1=(\S*)/m;
        }
	return $name if $name;
    }

    print "$PROGRAM: Unable to determine package name.\n" .
	  "Make sure to run this script inside the po directory.\n";
    exit;
}