re-enable i18n as a build target for translations

git-svn-id: svn://localhost/ardour2/branches/3.0@7995 d708f5d6-7413-0410-9779-e7cbd77b26cf

autowaf.py

@@ -11,6 +11,8 @@ import misc
 import os
 import subprocess
 import sys
+import glob
+
 from TaskGen import feature, before, after
 
 global g_is_child
@@ -436,3 +438,40 @@ def shutdown():
 		try: os.popen("/sbin/ldconfig")
 		except: pass
 
+def build_i18n(bld,srcdir,dir,name,sources):
+	pwd = bld.get_curdir()
+	os.chdir(os.path.join (srcdir, dir))
+
+	pot_file = '%s.pot' % name
+
+	args = [ 'xgettext',
+		 '--keyword=_',
+		 '--keyword=N_',
+		 '--from-code=UTF-8',
+		 '-o', pot_file,
+		 '--copyright-holder="Paul Davis"' ]
+	args += sources
+	print 'Updating ', pot_file
+	os.spawnvp (os.P_WAIT, 'xgettext', args)
+	
+	po_files = glob.glob ('po/*.po')
+	languages = [ po.replace ('.po', '') for po in po_files ]
+	
+	for po_file in po_files:
+		args = [ 'msgmerge',
+			 '--update',
+			 po_file,
+			 pot_file ]
+		print 'Updating ', po_file
+		os.spawnvp (os.P_WAIT, 'msgmerge', args)
+		
+	for po_file in po_files:
+		mo_file = po_file.replace ('.po', '.mo')
+		args = [ 'msgfmt',
+			 '-c',
+			 '-o',
+			 mo_file,
+			 po_file ]
+		print 'Generating ', po_file
+		os.spawnvp (os.P_WAIT, 'msgfmt', args)
+	os.chdir (pwd)