ede/build/Translation.jam

#
# $Id$
#
# Part of Equinox Desktop Environment (EDE).
# Copyright (c) 2000-2007 EDE Authors.
#
# This program is licensed under terms of the 
# GNU General Public License version 2 or newer.
# See COPYING for details.

DEFAULT_POT = "messages.pot" ;

# TranslationStrings [dir-where] : [source] : [output-file] ;
# Scans [source] file(s) for translatable strings (usually marked as _("foo"))
# and store result in [output-file] in [dir-where] directory. If [dir-where]
# does not exists, it will be created.
# [output-file] can be omitted; in that case DEFAULT_POT will be used.
rule TranslationStrings
{
	local strfile ;
	if $(3) {
		strfile = $(3) ;
	} else {
		strfile = $(DEFAULT_POT) ;
	}

	if ! $(XGETTEXT) {
		Echo "XGETTEXT wasn't defined; $(strfile) will not be created !" ;
		return ;
	}

	local path locale_dir target source i ;

	path = $(SEARCH_SOURCE) ;
	# Assure path name does not match pseudo target name by setting
	# a specified grist. For example if grist wasn't set, and there is
	# directory 'foo' with executable 'foo' in it, $(path) will be 'foo'
	# which will confuse jam to see it as target too, (re)building it.
	path = $(path:G=strings) ;

	locale_dir = [ FDirName $(path) $(<) ] ;
	target = [ FFileName $(locale_dir) $(strfile) ] ;
	source = $(>:R=$(path)) ;

	MkDir $(locale_dir) ;
	for i in $(source) {
		Depends $(target) : $(i) ;
	}	

	Depends $(target) : $(locale_dir) ;
	Depends potfile : $(target) ;
	Depends translation : $(target) ;
	Depends all : $(target) ;

	XGettext $(target) : $(source) ;

	Clean clean : $(target) ;
	CleandirSafe distclean : $(locale_dir) ;
}

# Translation [po-dir] : [file1.po file2.po...] ;
# Compile translated files into binary representation, so they 
# can be used by programs. [po-dir] is directory name where
# to look for translated files (.po) and where will be placed
# binary ones (.mo). Second parameter is list of .po files.
rule Translation
{
	local moext mofile pofile path i ;

	moext = ".mo" ;

	path = $(SEARCH_SOURCE) ;
	# Assure path name does not match pseudo target name by setting
	# a specified grist. For example if grist wasn't set, and there is
	# directory 'foo' with executable 'foo' in it, $(path) will be 'foo'
	# which will confuse jam to see it as target too, (re)building it.
	path = $(path:G=translation) ;

	if ! $(MSGFMT) {
		Echo "MSGFMT wasn't defined; $(moext) files will not be created !" ;
		return ;
	}

	for i in $(>) {
		pofile = [ FFileName $(path) $(<) $(i) ] ;
		mofile = [ FFileName $(path) $(<) $(i:S=$(moext)) ] ;

		Depends $(mofile) : $(pofile) ;
		Depends all : $(mofile) ;
		Depends translation : $(mofile) ;

		MakeTranslation1 $(mofile) : $(pofile) ;

		Clean clean : $(mofile) ;
	}
}

actions XGettext
{
	$(XGETTEXT) -k'_' $(2) -o $(1) ;
}

actions MakeTranslation1
{
	$(MSGFMT) $(>) -o $(<) ;
}

NotFile translation potfile ;
Always translation potfile ;