#!/usr/bin/env python3

from os import walk

from outpututils import rewriteIfChanged

def scanSources(baseDir):

	files = []

	dirs = []

	for dirPath, dirNames, fileNames in walk(baseDir):

		assert dirPath.startswith(baseDir)

		prefix = dirPath[len(baseDir):]

		if prefix:

			if not (prefix == 'unittest' or prefix.endswith('__pycache__')):

				dirs.append(prefix)

			prefix += '/'

		else:

			dirs.append('.')

		files += (

			prefix + name

			for name in fileNames

			if name.endswith('.cc')

			)

	return files, dirs

def mesonSources():

	files, dirs = scanSources('src/')

	testSources = []

	yield "sources = files("

	for name in sorted(files):

		if name.startswith('unittest/'):

			testSources.append(name)

		elif not (name == 'main.cc'

				or name.endswith('Test.cc')

				or name.endswith('_test.cc')

				):

			yield "    '%s'," % name

	yield "    )"

	yield ""

	yield "main_sources = files("

	yield "    'main.cc',"

	yield "    )"

	yield ""

	yield "test_sources = files("

	for name in testSources:

		yield "    '%s'," % name

	yield "    )"

	yield ""

	yield "incdirs = include_directories("

	for name in dirs:

		yield "    '%s'," % name

	yield "    )"

if __name__ == '__main__':

	rewriteIfChanged('src/meson.build', mesonSources())