intltool-update.in

PSlib是一个用来生成PostScript文件的类库。提供了一个生成PostScript文件的简单方法。

    my $MSGID_BUGS_ADDRESS = &FindMakevarsBugAddress;
    push @xgettext_argument, "--msgid-bugs-address\=$MSGID_BUGS_ADDRESS" if $MSGID_BUGS_ADDRESS;
    push @xgettext_argument, "--from-code\=$encoding" if ($gettext_support_nonascii);
    push @xgettext_argument, $XGETTEXT_ARGS if $XGETTEXT_ARGS;
    my $xgettext_command = join ' ', @xgettext_argument;

    # intercept xgettext error message
    print "Running $xgettext_command\n" if $VERBOSE;
    my $xgettext_error_msg = `$xgettext_command 2>\&1`;
    my $command_failed = $?;

    unlink "POTFILES.in.temp";

    print "Removing generated header (.h) files..." if $VERBOSE;
    unlink foreach (@temp_headers);
    print "done.\n" if $VERBOSE;

    if (! $command_failed)
    {
	if (! -e "$MODULE.pot")
	{
	    print "None of the files in POTFILES.in contain strings marked for translation.\n" if $VERBOSE;
	}
	else
	{
	    print "Wrote $MODULE.pot\n" if $VERBOSE;
	}
    }
    else
    {
	if ($xgettext_error_msg =~ /--from-code/)
	{
	    # replace non-ASCII error message with a more useful one.
	    print STDERR "ERROR: xgettext failed to generate PO template file because there is non-ASCII\n".
			 "       string marked for translation. Please make sure that all strings marked\n".
			 "       for translation are in uniform encoding (say UTF-8), then \e[1m*prepend*\e[0m the\n".
			 "       following line to POTFILES.in and rerun $PROGRAM:\n\n".
			 "           [encoding: UTF-8]\n\n";
	}
	else
	{
	    print STDERR "$xgettext_error_msg";
	    if (-e "$MODULE.pot")
	    {
		# is this possible?
		print STDERR "ERROR: xgettext failed but still managed to generate PO template file.\n".
			     "       Please consult error message above if there is any.\n";
	    }
	    else
	    {
		print STDERR "ERROR: xgettext failed to generate PO template file. Please consult\n".
			     "       error message above if there is any.\n";
	    }
	}
	exit (1);
    }
}

sub POFile_Update
{
    -f "$MODULE.pot" or die "$PROGRAM: $MODULE.pot does not exist.\n";

    my $MSGMERGE = $ENV{"MSGMERGE"} || "msgmerge";
    my ($lang, $outfile) = @_;

    if (! isGNUGettextTool ("$MSGMERGE"))
    {
	print STDERR " *** GNU msgmerge is not found on this system!\n".
		     " *** Without it, intltool-update can not extract strings.\n";
	exit;
    }

    print "Merging $SRCDIR/$lang.po with $MODULE.pot..." if $VERBOSE;

    my $infile = "$SRCDIR/$lang.po";
    $outfile = "$SRCDIR/$lang.po" if ($outfile eq "");

    # I think msgmerge won't overwrite old file if merge is not successful
    system ("$MSGMERGE", "-o", $outfile, $infile, "$MODULE.pot");
}

sub Console_WriteError_NotExisting
{
    my ($file) = @_;

    ## Report error if supplied language file is non-existing
    print STDERR "$PROGRAM: $file does not exist!\n";
    print STDERR "Try '$PROGRAM --help' for more information.\n";
    exit;
}

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

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

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

sub POFile_GetLanguage ($)
{
    s/^(.*\/)?(.+)\.po$/$2/;
    return $_;
}

sub Console_Write_TranslationStatus
{
    my ($lang, $output_file) = @_;
    my $MSGFMT = $ENV{"MSGFMT"} || "msgfmt";

    if (! isGNUGettextTool ("$MSGFMT"))
    {
	print STDERR " *** GNU msgfmt is not found on this system!\n".
		     " *** Without it, intltool-update can not extract strings.\n";
	exit;
    }

    $output_file = "$SRCDIR/$lang.po" if ($output_file eq "");

    system ("$MSGFMT", "-o", "$devnull", "--verbose", $output_file);
}

sub Console_Write_CoverageReport
{
    my $MSGFMT = $ENV{"MSGFMT"} || "msgfmt";

    if (! isGNUGettextTool ("$MSGFMT"))
    {
	print STDERR " *** GNU msgfmt is not found on this system!\n".
		     " *** Without it, intltool-update can not extract strings.\n";
	exit;
    }

    &GatherPOFiles;

    foreach my $lang (@languages) 
    {
	print STDERR "$lang: ";
	&POFile_Update ($lang, "");
    }

    print STDERR "\n\n * Current translation support in $MODULE \n\n";

    foreach my $lang (@languages)
    {
	print STDERR "$lang: ";
	system ("$MSGFMT", "-o", "$devnull", "--verbose", "$SRCDIR/$lang.po");
    }
}

sub SubstituteVariable
{
    my ($str) = @_;
    
    # always need to rewind file whenever it has been accessed
    seek (CONF, 0, 0);

    # cache each variable. varhash is global to we can add
    # variables elsewhere.
    while (<CONF>)
    {
	if (/^(\w+)=(.*)$/)
	{
	    ($varhash{$1} = $2) =~  s/^["'](.*)["']$/$1/;
	}
    }
    
    if ($str =~ /^(.*)\${?([A-Z_]+)}?(.*)$/)
    {
	my $rest = $3;
	my $untouched = $1;
	my $sub = "";
        # Ignore recursive definitions of variables
        $sub = $varhash{$2} if defined $varhash{$2} and $varhash{$2} !~ /\${?$2}?/;

	return SubstituteVariable ("$untouched$sub$rest");
    }
    
    # We're using Perl backticks ` and "echo -n" here in order to 
    # expand any shell escapes (such as backticks themselves) in every variable
    return echo_n ($str);
}

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

    my ($conf_in, $src_dir);

    if ($base_dirname =~ /^po(-.+)?$/) 
    {
	if (-f "Makevars") 
	{
	    my $makefile_source;

	    local (*IN);
	    open (IN, "<Makevars") || die "can't open Makevars: $!";

	    while (<IN>) 
	    {
		if (/^top_builddir[ \t]*=/) 
		{
		    $src_dir = $_;
		    $src_dir =~ s/^top_builddir[ \t]*=[ \t]*([^ \t\n\r]*)/$1/;

		    chomp $src_dir;
                    if (-f "$src_dir" . "/configure.ac") {
                        $conf_in = "$src_dir" . "/configure.ac" . "\n";
                    } else {
                        $conf_in = "$src_dir" . "/configure.in" . "\n";
                    }
		    last;
		}
	    }
	    close IN;

	    $conf_in || die "Cannot find top_builddir in Makevars.";
	}
	elsif (-f "$SRCDIR/../configure.ac") 
	{
	    $conf_in = "$SRCDIR/../configure.ac";
	} 
	elsif (-f "$SRCDIR/../configure.in") 
	{
	    $conf_in = "$SRCDIR/../configure.in";
	} 
	else 
	{
	    my $makefile_source;

	    local (*IN);
	    open (IN, "<Makefile") || return;

	    while (<IN>) 
	    {
		if (/^top_srcdir[ \t]*=/) 
		{
		    $src_dir = $_;		    
		    $src_dir =~ s/^top_srcdir[ \t]*=[ \t]*([^ \t\n\r]*)/$1/;

		    chomp $src_dir;
		    $conf_in = "$src_dir" . "/configure.in" . "\n";

		    last;
		}
	    }
	    close IN;

	    $conf_in || die "Cannot find top_srcdir in Makefile.";
	}

	open (CONF, "<$conf_in");
    }
    else
    {
	print STDERR "$PROGRAM: Unable to proceed.\n" .
		     "Make sure to run this script inside the po directory.\n";
	exit;
    }
}

sub FindPackageName
{
    my $version;
    my $domain = &FindMakevarsDomain;
    my $name = $domain || "untitled";

    &CONF_Handle_Open;

    my $conf_source; {
	local (*IN);
	open (IN, "<&CONF") || return $name;
	seek (IN, 0, 0);
	local $/; # slurp mode
	$conf_source = <IN>;
	close IN;
    }

    # priority for getting package name:
    # 1. GETTEXT_PACKAGE
    # 2. first argument of AC_INIT (with >= 2 arguments)
    # 3. first argument of AM_INIT_AUTOMAKE (with >= 2 argument)

    # /^AM_INIT_AUTOMAKE\([\s\[]*([^,\)\s\]]+)/m 
    # the \s makes this not work, why?
    if ($conf_source =~ /^AM_INIT_AUTOMAKE\(([^,\)]+),([^,\)]+)/m)
    {
	($name, $version) = ($1, $2);
	$name    =~ s/[\[\]\s]//g;
	$version =~ s/[\[\]\s]//g;
	$varhash{"PACKAGE_NAME"} = $name if (not $name =~ /\${?AC_PACKAGE_NAME}?/);
	$varhash{"PACKAGE"} = $name if (not $name =~ /\${?PACKAGE}?/);
	$varhash{"PACKAGE_VERSION"} = $version if (not $name =~ /\${?AC_PACKAGE_VERSION}?/);
	$varhash{"VERSION"} = $version if (not $name =~ /\${?VERSION}?/);
    }
    
    if ($conf_source =~ /^AC_INIT\(([^,\)]+),([^,\)]+)/m) 
    {
	($name, $version) = ($1, $2);
	$name    =~ s/[\[\]\s]//g;
	$version =~ s/[\[\]\s]//g;
	$varhash{"PACKAGE_NAME"} = $name if (not $name =~ /\${?AC_PACKAGE_NAME}?/);
	$varhash{"PACKAGE"} = $name if (not $name =~ /\${?PACKAGE}?/);
	$varhash{"PACKAGE_VERSION"} = $version if (not $name =~ /\${?AC_PACKAGE_VERSION}?/);
	$varhash{"VERSION"} = $version if (not $name =~ /\${?VERSION}?/);
    }

    # \s makes this not work, why?
    $name = $1 if $conf_source =~ /^GETTEXT_PACKAGE=\[?([^\n\]]+)/m;
    
    # m4 macros AC_PACKAGE_NAME, AC_PACKAGE_VERSION etc. have same value
    # as corresponding $PACKAGE_NAME, $PACKAGE_VERSION etc. shell variables.
    $name =~ s/\bAC_PACKAGE_/\$PACKAGE_/g;

    $name = $domain if $domain;

    $name = SubstituteVariable ($name);
    $name =~ s/^["'](.*)["']$/$1/;

    return $name if $name;
}


sub FindPOTKeywords
{

    my $keywords = "--keyword\=\_ --keyword\=N\_ --keyword\=U\_ --keyword\=Q\_";
    my $varname = "XGETTEXT_OPTIONS";
    my $make_source; {
	local (*IN);
	open (IN, "<Makevars") || (open(IN, "<Makefile.in.in") && ($varname = "XGETTEXT_KEYWORDS")) || return $keywords;
	seek (IN, 0, 0);
	local $/; # slurp mode
	$make_source = <IN>;
	close IN;
    }

    $keywords = $1 if $make_source =~ /^$varname[ ]*=\[?([^\n\]]+)/m;
    
    return $keywords;
}

sub FindMakevarsDomain
{

    my $domain = "";
    my $makevars_source; { 
	local (*IN);
	open (IN, "<Makevars") || return $domain;
	seek (IN, 0, 0);
	local $/; # slurp mode
	$makevars_source = <IN>;
	close IN;
    }

    $domain = $1 if $makevars_source =~ /^DOMAIN[ ]*=\[?([^\n\]\$]+)/m;
    $domain =~ s/^\s+//;
    $domain =~ s/\s+$//;
    
    return $domain;
}

sub FindMakevarsBugAddress
{

    my $address = "";
    my $makevars_source; { 
	local (*IN);
	open (IN, "<Makevars") || return undef;
	seek (IN, 0, 0);
	local $/; # slurp mode
	$makevars_source = <IN>;
	close IN;
    }

    $address = $1 if $makevars_source =~ /^MSGID_BUGS_ADDRESS[ ]*=\[?([^\n\]\$]+)/m;
    $address =~ s/^\s+//;
    $address =~ s/\s+$//;
    
    return $address;
}