# Copyright 2014 The Emscripten Authors. All rights reserved.

# Emscripten is available under two separate licenses, the MIT license and the

# University of Illinois/NCSA Open Source License. Both these licenses can be

# found in the LICENSE file.

import os

from tools.shared import exit_with_error

ports = []

ports_by_name = {}

ports_dir = os.path.dirname(os.path.abspath(__file__))

def read_ports():

expected_attrs = ['get', 'clear', 'process_args', 'show', 'needed']

for filename in os.listdir(ports_dir):

if not filename.endswith('.py') or filename == '__init__.py':

continue

filename = os.path.splitext(filename)[0]

port = __import__(filename, globals(), level=1)

ports.append(port)

port.name = filename

ports_by_name[port.name] = port

for a in expected_attrs:

assert hasattr(port, a), 'port %s is missing %s' % (port, a)

if not hasattr(port, 'process_dependencies'):

port.process_dependencies = lambda x: 0

if not hasattr(port, 'deps'):

port.deps = []

for dep in port.deps:

if dep not in ports_by_name:

exit_with_error('unknown dependency in port: %s' % dep)

read_ports()