#! /usr/bin/env python
# encoding: utf-8

top = '.'
out = 'bin'

import os, re
from waflib import Utils

def configure(conf):
	pass

def build(bld):

	# the test.pc.in is a special case which is always handled
	bld(source='test.pc.in', VERSION='1.1', LIBS='moo', XPM_LIBS='-lxpm', LIBICONV='-liconv', XPM_CFLAGS='-O3', INTVAR=12)

	tg = bld(
		features     = 'subst', # the feature 'subst' overrides the source/target processing
		source       = 'foo.in', # list of string or nodes
		target       = 'foo.txt', # list of strings or nodes
		encoding     = 'ascii', # file encoding for python3, default is latin-1
		install_path = '/tmp/uff/', # installation path, optional
		chmod        = Utils.O755, # installation mode, optional
		PREFIX       = bld.env.PREFIX, # variables to use in the substitution
		re_m4        = re.compile('%%(\w+)%%', re.M), # custom substitution
		BINDIR       = bld.env.BINDIR)

	# if you are using an external dict, here is to merge the key/values:
	dct =  {'BINDIR': '/opt'}
	tg.__dict__.update(dct)

	# if you want a file copy, pass "is_copy=True"
	bld(features='subst', source='wscript', target='wscript', is_copy=True)

	# same thing with a simple function
	def fun(task, text):
		return text
	bld(features='subst', subst_fun=fun, source='wscript', target='wscript2')

	def hlink(task):
		try:
			link = os.link
		except AttributeError:
			task.outputs[0].write(task.inputs[0].read('rb'), 'wb')
		else:
			for x, y in zip(task.inputs, task.outputs):
				try:
					os.remove(y.abspath())
				except OSError:
					pass
				os.link(x.abspath(), y.abspath())
	bld(features='subst', fun=hlink, source='wscript', target='wscript3')

	# this one is just a reminder that simple files can be created (and a test too)
	bld(rule='echo "การไฟ่" > ${TGT}', target='uni.txt')

	# and this is an alternate syntax
	#@bld.rule(source='wscript', target='wscript2')
	#def _(tsk):
	#	tsk.outputs[0].write(tsk.inputs[0].read())