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� ݹ�Yc @` s� d Z d d l m Z m Z m Z m Z y d d l m Z Wn! e k r_ d d l m Z n Xd d l m Z d d l m Z d d l m Z m Z m Z m Z d d d g Z d � Z d e f d � � YZ d e f d � � YZ d S( u� pyudev.core =========== Core types and functions of :mod:`pyudev`. .. moduleauthor:: Sebastian Wiesner <lunaryorn@googlemail.com> i ( t print_functiont divisiont unicode_literalst absolute_import( t check_output( t Device( t load_udev_library( t ensure_unicode_stringt ensure_byte_stringt udev_list_iteratet property_value_to_bytesu udev_versionu Contextu Enumeratorc C` s( t t d d g � � } t | j � � S( ul Get the version of the underlying udev library. udev doesn't use a standard major-minor versioning scheme, but instead labels releases with a single consecutive number. Consequently, the version number returned by this function is a single integer, and not a tuple (like for instance the interpreter version in :data:`sys.version_info`). As libudev itself does not provide a function to query the version number, this function calls the ``udevadm`` utilitiy, so be prepared to catch :exc:`~exceptions.EnvironmentError` and :exc:`~subprocess.CalledProcessError` if you call this function. Return the version number as single integer. Raise :exc:`~exceptions.ValueError`, if the version number retrieved from udev could not be converted to an integer. Raise :exc:`~exceptions.EnvironmentError`, if ``udevadm`` was not found, or could not be executed. Raise :exc:`subprocess.CalledProcessError`, if ``udevadm`` returned a non-zero exit code. On Python 2.7 or newer, the ``output`` attribute of this exception is correctly set. .. versionadded:: 0.8 u udevadmu --version( R R t intt strip( t output( ( s/ /usr/lib/python2.7/site-packages/pyudev/core.pyt udev_version. s t Contextc B` sw e Z d Z d � Z d � Z e d � � Z e d � � Z e d � � Z e d � � Z e j d � � Z d � Z RS( u The udev context. This is *the* central object to access udev. An instance of this class must be created before anything else can be done. It holds the udev configuration and provides the interface to list devices (see :meth:`list_devices`). Instances of this class can directly be given as ``udev *`` to functions wrapped through :mod:`ctypes`. c C` s" t � | _ | j j � | _ d S( u' Create a new context. N( R t _libudevt udev_newt _as_parameter_( t self( ( s/ /usr/lib/python2.7/site-packages/pyudev/core.pyt __init__X s c C` s | j j | � d S( N( R t udev_unref( R ( ( s/ /usr/lib/python2.7/site-packages/pyudev/core.pyt __del___ s c C` s t | j j | � � S( u� The ``sysfs`` mount point defaulting to ``/sys'`` as unicode string. The mount point can be overwritten using the environment variable :envvar:`SYSFS_PATH`. Use this for testing purposes. ( R R t udev_get_sys_path( R ( ( s/ /usr/lib/python2.7/site-packages/pyudev/core.pyt sys_pathb s c C` s t | j j | � � S( u� The device directory path defaulting to ``/dev`` as unicode string. This can be overridden in the udev configuration. ( R R t udev_get_dev_path( R ( ( s/ /usr/lib/python2.7/site-packages/pyudev/core.pyt device_pathl s c C` s t | j j | � � S( u� The run runtime directory path defaulting to ``/run`` as unicode string. .. udevversion:: 167 .. versionadded:: 0.10 ( R R t udev_get_run_path( R ( ( s/ /usr/lib/python2.7/site-packages/pyudev/core.pyt run_pathu s c C` s | j j | � S( u The logging priority of the interal logging facitility of udev as integer with a standard :mod:`syslog` priority. Assign to this property to change the logging priority. UDev uses the standard :mod:`syslog` priorities. Constants for these priorities are defined in the :mod:`syslog` module in the standard library: >>> import syslog >>> context = pyudev.Context() >>> context.log_priority = syslog.LOG_DEBUG .. versionadded:: 0.9 ( R t udev_get_log_priority( R ( ( s/ /usr/lib/python2.7/site-packages/pyudev/core.pyt log_priority� s c C` s | j j | | � d S( N( R t udev_set_log_priority( R t value( ( s/ /usr/lib/python2.7/site-packages/pyudev/core.pyR � s c K` s t | � j | � S( u! List all available devices. The arguments of this method are the same as for :meth:`Enumerator.match()`. In fact, the arguments are simply passed straight to method :meth:`~Enumerator.match()`. This function creates and returns an :class:`Enumerator` object, that can be used to filter the list of devices, and eventually retrieve :class:`Device` objects representing matching devices. .. versionchanged:: 0.8 Accept keyword arguments now for easy matching ( t Enumeratort match( R t kwargs( ( s/ /usr/lib/python2.7/site-packages/pyudev/core.pyt list_devices� s ( t __name__t __module__t __doc__R R t propertyR R R R t setterR$ ( ( ( s/ /usr/lib/python2.7/site-packages/pyudev/core.pyR K s R! c B` sw e Z d Z d � Z d � Z d � Z e d � Z d � Z d � Z e d � Z d � Z d � Z d � Z d � Z RS( u� Enumerate all available devices. To retrieve devices, simply iterate over an instance of this class. This operation yields :class:`Device` objects representing the available devices. Before iteration the device list can be filtered by subsystem or by property values using :meth:`match_subsystem` and :meth:`match_property`. Multiple subsystem (property) filters are combined using a logical OR, filters of different types are combined using a logical AND. The following filter for instance:: devices.match_subsystem('block').match_property( 'ID_TYPE', 'disk').match_property('DEVTYPE', 'disk') means the following:: subsystem == 'block' and (ID_TYPE == 'disk' or DEVTYPE == 'disk') Once added, a filter cannot be removed anymore. Create a new object instead. Instances of this class can directly be given as given ``udev_enumerate *`` to functions wrapped through :mod:`ctypes`. c C` sL t | t � s t d � � n | | _ | j j | � | _ | j | _ d S( u� Create a new enumerator with the given ``context`` (a :class:`Context` instance). While you can create objects of this class directly, this is not recommended. Call :method:`Context.list_devices()` instead. u Invalid context objectN( t isinstanceR t TypeErrort contextR t udev_enumerate_newR ( R R, ( ( s/ /usr/lib/python2.7/site-packages/pyudev/core.pyR � s c C` s | j j | � d S( N( R t udev_enumerate_unref( R ( ( s/ /usr/lib/python2.7/site-packages/pyudev/core.pyR � s c K` s� | j d d � } | d k r. | j | � n | j d d � } | d k r\ | j | � n | j d d � } | d k r� | j | � n | j d d � } | d k r� | j | � n x* | j � D] \ } } | j | | � q� W| S( u3 Include devices according to the rules defined by the keyword arguments. These keyword arguments are interpreted as follows: - The value for the keyword argument ``subsystem`` is forwarded to :meth:`match_subsystem()`. - The value for the keyword argument ``sys_name`` is forwared to :meth:`match_sys_name()`. - The value for the keyword argument ``tag`` is forwared to :meth:`match_tag()`. - The value for the keyword argument ``parent`` is forwared to :meth:`match_parent()`. - All other keyword arguments are forwareded one by one to :meth:`match_property()`. The keyword argument itself is interpreted as property name, the value of the keyword argument as the property value. All keyword arguments are optional, calling this method without no arguments at all is simply a noop. Return the instance again. .. versionadded:: 0.8 .. versionchanged:: 0.13 Added ``parent`` keyword u subsystemu sys_nameu tagu parentN( t popt Nonet match_subsystemt match_sys_namet match_tagt match_parentt iteritemst match_property( R R# t subsystemt sys_namet tagt parentR( R ( ( s/ /usr/lib/python2.7/site-packages/pyudev/core.pyR" � s c C` s5 | s | j j n | j j } | | t | � � | S( u� Include all devices, which are part of the given ``subsystem``. ``subsystem`` is either a unicode string or a byte string, containing the name of the subsystem. If ``nomatch`` is ``True`` (default is ``False``), the match is inverted: A device is only included if it is *not* part of the given ``subsystem``. Return the instance again. ( R t" udev_enumerate_add_match_subsystemt$ udev_enumerate_add_nomatch_subsystemR ( R R7 t nomatchR" ( ( s/ /usr/lib/python2.7/site-packages/pyudev/core.pyR1 s c C` s | j j | t | � � | S( u� Include all devices with the given name. ``sys_name`` is a byte or unicode string containing the device name. Return the instance again. .. versionadded:: 0.8 ( R t udev_enumerate_add_match_sysnameR ( R R8 ( ( s/ /usr/lib/python2.7/site-packages/pyudev/core.pyR2 s c C` s& | j j | t | � t | � � | S( u� Include all devices, whose ``property`` has the given ``value``. ``property`` is either a unicode string or a byte string, containing the name of the property to match. ``value`` is a property value, being one of the following types: - :func:`int` - :func:`bool` - A byte string - Anything convertable to a unicode string (including a unicode string itself) Return the instance again. ( R t! udev_enumerate_add_match_propertyR R ( R R( R ( ( s/ /usr/lib/python2.7/site-packages/pyudev/core.pyR6 " s c C` s> | s | j j n | j j } | | t | � t | � � | S( u� Include all devices, whose ``attribute`` has the given ``value``. ``attribute`` is either a unicode string or a byte string, containing the name of a sys attribute to match. ``value`` is an attribute value, being one of the following types: - :func:`int`, - :func:`bool` - A byte string - Anything convertable to a unicode string (including a unicode string itself) If ``nomatch`` is ``True`` (default is ``False``), the match is inverted: A device is include if the ``attribute`` does *not* match the given ``value``. .. note:: If ``nomatch`` is ``True``, devices which do not have the given ``attribute`` at all are also included. In other words, with ``nomatch=True`` the given ``attribute`` is *not* guaranteed to exist on all returned devices. Return the instance again. ( R t udev_enumerate_add_match_sysattrt" udev_enumerate_add_nomatch_sysattrR R ( R t attributeR R= R" ( ( s/ /usr/lib/python2.7/site-packages/pyudev/core.pyt match_attribute6 s c C` s | j j | t | � � | S( u� Include all devices, which have the given ``tag`` attached. ``tag`` is a byte or unicode string containing the tag name. Return the instance again. .. udevversion:: 154 .. versionadded:: 0.6 ( R t udev_enumerate_add_match_tagR ( R R9 ( ( s/ /usr/lib/python2.7/site-packages/pyudev/core.pyR3 X s c C` s | j j | � | S( u� Include only devices, which are initialized. Initialized devices have properly set device node permissions and context, and are (in case of network devices) fully renamed. Currently this will not affect devices which do not have device nodes and are not network interfaces. Return the instance again. .. seealso:: :attr:`Device.is_initialized` .. udevversion:: 165 .. versionadded:: 0.8 ( R t' udev_enumerate_add_match_is_initialized( R ( ( s/ /usr/lib/python2.7/site-packages/pyudev/core.pyt match_is_initializedg s c C` s | j j | | � | S( u Include all devices on the subtree of the given ``parent`` device. The ``parent`` device itself is also included. ``parent`` is a :class:`~pyudev.Device`. Return the instance again. .. udevversion:: 172 .. versionadded:: 0.13 ( R t udev_enumerate_add_match_parent( R R: ( ( s/ /usr/lib/python2.7/site-packages/pyudev/core.pyR4 | s c c` s] | j j | � | j j | � } x4 t | j | � D] \ } } t j | j | � Vq5 Wd S( u\ Iterate over all matching devices. Yield :class:`Device` objects. N( R t udev_enumerate_scan_devicest udev_enumerate_get_list_entryR R t from_sys_pathR, ( R t entryt namet _( ( s/ /usr/lib/python2.7/site-packages/pyudev/core.pyt __iter__� s ( R% R& R' R R R" t FalseR1 R2 R6 RC R3 RF R4 RN ( ( ( s/ /usr/lib/python2.7/site-packages/pyudev/core.pyR! � s , " N( R' t __future__R R R R t subprocessR t ImportErrort pyudev._compatt pyudev.deviceR t pyudev._libudevR t pyudev._utilR R R R t __all__R t objectR R! ( ( ( s/ /usr/lib/python2.7/site-packages/pyudev/core.pyt <module> s " " _
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