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#!/usr/bin/env python
# encoding: utf-8
# Thomas Nagy, 2006-2018 (ita)
"""
Support for translation tools such as msgfmt and intltool
Usage::
def configure(conf):
conf.load('gnu_dirs intltool')
def build(bld):
# process the .po files into .gmo files, and install them in LOCALEDIR
bld(features='intltool_po', appname='myapp', podir='po', install_path="${LOCALEDIR}")
# process an input file, substituting the translations from the po dir
bld(
features = "intltool_in",
podir = "../po",
style = "desktop",
flags = ["-u"],
source = 'kupfer.desktop.in',
install_path = "${DATADIR}/applications",
)
Usage of the :py:mod:`waflib.Tools.gnu_dirs` is recommended, but not obligatory.
"""
from __future__ import with_statement
import os, re
from waflib import Context, Task, Utils, Logs
import waflib.Tools.ccroot
from waflib.TaskGen import feature, before_method, taskgen_method
from waflib.Logs import error
from waflib.Configure import conf
_style_flags = {
'ba': '-b',
'desktop': '-d',
'keys': '-k',
'quoted': '--quoted-style',
'quotedxml': '--quotedxml-style',
'rfc822deb': '-r',
'schemas': '-s',
'xml': '-x',
}
@taskgen_method
def ensure_localedir(self):
"""
Expands LOCALEDIR from DATAROOTDIR/locale if possible, or falls back to PREFIX/share/locale
"""
# use the tool gnu_dirs to provide options to define this
if not self.env.LOCALEDIR:
if self.env.DATAROOTDIR:
self.env.LOCALEDIR = os.path.join(self.env.DATAROOTDIR, 'locale')
else:
self.env.LOCALEDIR = os.path.join(self.env.PREFIX, 'share', 'locale')
@before_method('process_source')
@feature('intltool_in')
def apply_intltool_in_f(self):
"""
Creates tasks to translate files by intltool-merge::
def build(bld):
bld(
features = "intltool_in",
podir = "../po",
style = "desktop",
flags = ["-u"],
source = 'kupfer.desktop.in',
install_path = "${DATADIR}/applications",
)
:param podir: location of the .po files
:type podir: string
:param source: source files to process
:type source: list of string
:param style: the intltool-merge mode of operation, can be one of the following values:
``ba``, ``desktop``, ``keys``, ``quoted``, ``quotedxml``, ``rfc822deb``, ``schemas`` and ``xml``.
See the ``intltool-merge`` man page for more information about supported modes of operation.
:type style: string
:param flags: compilation flags ("-quc" by default)
:type flags: list of string
:param install_path: installation path
:type install_path: string
"""
try:
self.meths.remove('process_source')
except ValueError:
pass
self.ensure_localedir()
podir = getattr(self, 'podir', '.')
podirnode = self.path.find_dir(podir)
if not podirnode:
error("could not find the podir %r" % podir)
return
cache = getattr(self, 'intlcache', '.intlcache')
self.env.INTLCACHE = [os.path.join(str(self.path.get_bld()), podir, cache)]
self.env.INTLPODIR = podirnode.bldpath()
self.env.append_value('INTLFLAGS', getattr(self, 'flags', self.env.INTLFLAGS_DEFAULT))
if '-c' in self.env.INTLFLAGS:
self.bld.fatal('Redundant -c flag in intltool task %r' % self)
style = getattr(self, 'style', None)
if style:
try:
style_flag = _style_flags[style]
except KeyError:
self.bld.fatal('intltool_in style "%s" is not valid' % style)
self.env.append_unique('INTLFLAGS', [style_flag])
for i in self.to_list(self.source):
node = self.path.find_resource(i)
task = self.create_task('intltool', node, node.change_ext(''))
inst = getattr(self, 'install_path', None)
if inst:
self.add_install_files(install_to=inst, install_from=task.outputs)
@feature('intltool_po')
def apply_intltool_po(self):
"""
Creates tasks to process po files::
def build(bld):
bld(features='intltool_po', appname='myapp', podir='po', install_path="${LOCALEDIR}")
The relevant task generator arguments are:
:param podir: directory of the .po files
:type podir: string
:param appname: name of the application
:type appname: string
:param install_path: installation directory
:type install_path: string
The file LINGUAS must be present in the directory pointed by *podir* and list the translation files to process.
"""
try:
self.meths.remove('process_source')
except ValueError:
pass
self.ensure_localedir()
appname = getattr(self, 'appname', getattr(Context.g_module, Context.APPNAME, 'set_your_app_name'))
podir = getattr(self, 'podir', '.')
inst = getattr(self, 'install_path', '${LOCALEDIR}')
linguas = self.path.find_node(os.path.join(podir, 'LINGUAS'))
if linguas:
# scan LINGUAS file for locales to process
with open(linguas.abspath()) as f:
langs = []
for line in f.readlines():
# ignore lines containing comments
if not line.startswith('#'):
langs += line.split()
re_linguas = re.compile('[-a-zA-Z_@.]+')
for lang in langs:
# Make sure that we only process lines which contain locales
if re_linguas.match(lang):
node = self.path.find_resource(os.path.join(podir, re_linguas.match(lang).group() + '.po'))
task = self.create_task('po', node, node.change_ext('.mo'))
if inst:
filename = task.outputs[0].name
(langname, ext) = os.path.splitext(filename)
inst_file = inst + os.sep + langname + os.sep + 'LC_MESSAGES' + os.sep + appname + '.mo'
self.add_install_as(install_to=inst_file, install_from=task.outputs[0],
chmod=getattr(self, 'chmod', Utils.O644))
else:
Logs.pprint('RED', "Error no LINGUAS file found in po directory")
class po(Task.Task):
"""
Compiles .po files into .gmo files
"""
run_str = '${MSGFMT} -o ${TGT} ${SRC}'
color = 'BLUE'
class intltool(Task.Task):
"""
Calls intltool-merge to update translation files
"""
run_str = '${INTLTOOL} ${INTLFLAGS} ${INTLCACHE_ST:INTLCACHE} ${INTLPODIR} ${SRC} ${TGT}'
color = 'BLUE'
@conf
def find_msgfmt(conf):
"""
Detects msgfmt and sets the ``MSGFMT`` variable
"""
conf.find_program('msgfmt', var='MSGFMT')
@conf
def find_intltool_merge(conf):
"""
Detects intltool-merge
"""
if not conf.env.PERL:
conf.find_program('perl', var='PERL')
conf.env.INTLCACHE_ST = '--cache=%s'
conf.env.INTLFLAGS_DEFAULT = ['-q', '-u']
conf.find_program('intltool-merge', interpreter='PERL', var='INTLTOOL')
def configure(conf):
"""
Detects the program *msgfmt* and set *conf.env.MSGFMT*.
Detects the program *intltool-merge* and set *conf.env.INTLTOOL*.
It is possible to set INTLTOOL in the environment, but it must not have spaces in it::
$ INTLTOOL="/path/to/the program/intltool" waf configure
If a C/C++ compiler is present, execute a compilation test to find the header *locale.h*.
"""
conf.find_msgfmt()
conf.find_intltool_merge()
if conf.env.CC or conf.env.CXX:
conf.check(header_name='locale.h')
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