Squashed 'waflib/' content from commit 391d285

git-subtree-dir: waflib
git-subtree-split: 391d2853c6c97efc90e466f187675e8155c866d6

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diff --git a/Tools/intltool.py b/Tools/intltool.py
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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')
+