Fixing issues with i18n stuff:

- Make gettext stuff draw-time. so switching between languages
  can happens without restart now.
- Added option to translate visible interface (menus, buttons, labels)
  and tooltips. Now it's possible to have english UI and localized tooltips.
- Clean-up sources, do not use gettext stuff for things which can be
  collected with RNA.
- Fix issues with windows 64bit and ru_RU locale on my desktop
  (it was codepage issue).
- Added operator "Get Messages" which generates new text block with
  with all strings collected from RNA.
- Changed script for updating blender.pot so now it appends
  messages collected from rna to automatically gathered messages.
  To update .pot you have to re-generate messages.txt using "Get Messages"
  operator and then run update_pot script.
- Clean up old translation stuff which wasn't used and most probably
  wouldn't be used.
- Return back "International Fonts" option, so if it's disabled, no
  gettext lookups happens on draw.
- Merged read_homefile function back. No need in splitting it.

TODO:
- Custom fonts and font size.
  Current font isn't nice at least for russian locale, it's
  difficult to read it.
- Put references to messages.txt so gettext can merge translation when
  name/description of some property changes.

source/blender/python/SConscript

@@ -17,6 +17,9 @@ defs = []
 if is_debug:
     defs.append('_DEBUG')
 
+if env['WITH_BF_INTERNATIONAL']:
+    defs.append('INTERNATIONAL')
+
 sources = env.Glob('generic/*.c')
 env.BlenderLib( libname = 'bf_python_ext', sources = Split(sources), includes = Split(incs), defines = defs, libtype = ['core','player'], priority = [363,165]) # ketsji is 360
 

source/blender/python/generic/CMakeLists.txt

@@ -48,5 +48,8 @@ set(SRC
 	py_capi_utils.h
 )
 
+if(WITH_INTERNATIONAL)
+        add_definitions(-DINTERNATIONAL)
+endif()
 
 blender_add_lib(bf_python_ext "${SRC}" "${INC}" "${INC_SYS}")

source/blender/python/generic/blf_py_api.c

@@ -34,6 +34,9 @@
 
 #include "BLI_utildefines.h"
 
+#ifdef INTERNATIONAL
+#include "DNA_userdef_types.h"	/* is it bad level? */
+#endif
 
 
 PyDoc_STRVAR(py_blf_position_doc,
@@ -367,6 +370,7 @@ static PyObject *py_blf_load(PyObject *UNUSED(self), PyObject *args)
 	return PyLong_FromLong(BLF_load(filename));
 }
 
+#ifdef INTERNATIONAL
 PyDoc_STRVAR(py_blf_gettext_doc,
 ".. function:: gettext(msgid)\n"
 "\n"
@@ -380,9 +384,17 @@ PyDoc_STRVAR(py_blf_gettext_doc,
 static PyObject *py_blf_gettext(PyObject *UNUSED(self), PyObject *args)
 {
 	char* msgid;
+	const char *text;
+
 	if (!PyArg_ParseTuple(args, "s:blf.gettext", &msgid))
 		return NULL;
-	return PyUnicode_FromString( BLF_gettext( msgid ) );
+
+	if((U.transopts&USER_DOTRANSLATE) && (U.transopts&USER_TR_IFACE))
+		text = BLF_gettext( msgid );
+	else
+		text = msgid;
+
+	return PyUnicode_FromString( text );
 }
 
 PyDoc_STRVAR(py_blf_fake_gettext_doc,
@@ -403,6 +415,7 @@ static PyObject *py_blf_fake_gettext(PyObject *UNUSED(self), PyObject *args)
 
 	return PyUnicode_FromString( msgid );
 }
+#endif
 
 /*----------------------------MODULE INIT-------------------------*/
 static PyMethodDef BLF_methods[] = {
@@ -419,8 +432,10 @@ static PyMethodDef BLF_methods[] = {
 	{"shadow_offset", (PyCFunction) py_blf_shadow_offset, METH_VARARGS, py_blf_shadow_offset_doc},
 	{"size", (PyCFunction) py_blf_size, METH_VARARGS, py_blf_size_doc},
 	{"load", (PyCFunction) py_blf_load, METH_VARARGS, py_blf_load_doc},
+#ifdef INTERNATIONAL
 	{"gettext", (PyCFunction) py_blf_gettext, METH_VARARGS, py_blf_gettext_doc},
 	{"fake_gettext", (PyCFunction) py_blf_fake_gettext, METH_VARARGS, py_blf_fake_gettext_doc},
+#endif
 	{NULL, NULL, 0, NULL}
 };