Gestionnaire de fichiers - Editer - /usr/lib/python2.7/site-packages/serial/__init__.py
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#!/usr/bin/env python # portable serial port access with python # this is a wrapper module for different platform implementations # # (C) 2001-2010 Chris Liechti <cliechti@gmx.net> # this is distributed under a free software license, see license.txt VERSION = '2.6' import sys if sys.platform == 'cli': from serial.serialcli import * else: import os # chose an implementation, depending on os if os.name == 'nt': #sys.platform == 'win32': from serial.serialwin32 import * elif os.name == 'posix': from serial.serialposix import * elif os.name == 'java': from serial.serialjava import * else: raise ImportError("Sorry: no implementation for your platform ('%s') available" % (os.name,)) protocol_handler_packages = [ 'serial.urlhandler', ] def serial_for_url(url, *args, **kwargs): """\ Get an instance of the Serial class, depending on port/url. The port is not opened when the keyword parameter 'do_not_open' is true, by default it is. All other parameters are directly passed to the __init__ method when the port is instantiated. The list of package names that is searched for protocol handlers is kept in ``protocol_handler_packages``. e.g. we want to support a URL ``foobar://``. A module ``my_handlers.protocol_foobar`` is provided by the user. Then ``protocol_handler_packages.append("my_handlers")`` would extend the search path so that ``serial_for_url("foobar://"))`` would work. """ # check remove extra parameter to not confuse the Serial class do_open = 'do_not_open' not in kwargs or not kwargs['do_not_open'] if 'do_not_open' in kwargs: del kwargs['do_not_open'] # the default is to use the native version klass = Serial # 'native' implementation # check port type and get class try: url_nocase = url.lower() except AttributeError: # it's not a string, use default pass else: if '://' in url_nocase: protocol = url_nocase.split('://', 1)[0] for package_name in protocol_handler_packages: module_name = '%s.protocol_%s' % (package_name, protocol,) try: handler_module = __import__(module_name) except ImportError: pass else: klass = sys.modules[module_name].Serial break else: raise ValueError('invalid URL, protocol %r not known' % (protocol,)) else: klass = Serial # 'native' implementation # instantiate and open when desired instance = klass(None, *args, **kwargs) instance.port = url if do_open: instance.open() return instance
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