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#
# Utilities
#
# Copyright (c) 2011 Thomas Graf <tgraf@suug.ch>
#
"""utility module for netlink
"""
from __future__ import absolute_import
from . import core as netlink
from . import capi as capi
from string import Formatter
import types
__version__ = '1.0'
def _color(t, c):
return b'{esc}[{color}m{text}{esc}[0m'.format(esc=b'\x1b', color=c, text=t)
def black(t):
return _color(t, 30)
def red(t):
return _color(t, 31)
def green(t):
return _color(t, 32)
def yellow(t):
return _color(t, 33)
def blue(t):
return _color(t, 34)
def magenta(t):
return _color(t, 35)
def cyan(t):
return _color(t, 36)
def white(t):
return _color(t, 37)
def bold(t):
return _color(t, 1)
def kw(t):
return yellow(t)
def num(t):
return str(t)
def string(t):
return t
def addr(t):
return str(t)
def bad(t):
return red(t)
def good(t):
return green(t)
def title(t):
return t
def boolean(t):
return str(t)
def handle(t):
return str(t)
class MyFormatter(Formatter):
def __init__(self, obj, indent=''):
self._obj = obj
self._indent = indent
def _nlattr(self, key):
value = getattr(self._obj, key)
title_ = None
if isinstance(value, types.MethodType):
value = value()
try:
d = netlink.attrs[self._obj._name + '.' + key]
if 'fmt' in d:
value = d['fmt'](value)
if 'title' in d:
title_ = d['title']
except KeyError:
pass
except AttributeError:
pass
return title_, str(value)
def get_value(self, key, args, kwds):
# Let default get_value() handle ints
if not isinstance(key, str):
return Formatter.get_value(self, key, args, kwds)
# HACK, we allow defining strings via fields to allow
# conversions
if key[:2] == 's|':
return key[2:]
if key[:2] == 't|':
# title mode ("TITLE ATTR")
include_title = True
elif key[:2] == 'a|':
# plain attribute mode ("ATTR")
include_title = False
else:
# No special field, have default get_value() get it
return Formatter.get_value(self, key, args, kwds)
key = key[2:]
(title_, value) = self._nlattr(key)
if include_title:
if not title_:
title_ = key # fall back to key as title
value = '{0} {1}'.format(kw(title_), value)
return value
def convert_field(self, value, conversion):
if conversion == 'r':
return repr(value)
elif conversion == 's':
return str(value)
elif conversion == 'k':
return kw(value)
elif conversion == 'b':
return bold(value)
elif conversion is None:
return value
raise ValueError('Unknown converion specifier {0!s}'.format(conversion))
def nl(self, format_string=''):
return '\n' + self._indent + self.format(format_string)
NL_BYTE_RATE = 0
NL_BIT_RATE = 1
class Rate(object):
def __init__(self, rate, mode=NL_BYTE_RATE):
self._rate = rate
self._mode = mode
def __str__(self):
return capi.nl_rate2str(self._rate, self._mode, 32)[1]
def __int__(self):
return self._rate
def __cmp__(self, other):
return int(self) - int(other)
class Size(object):
def __init__(self, size):
self._size = size
def __str__(self):
return capi.nl_size2str(self._size, 32)[0]
def __int__(self):
return self._size
def __cmp__(self, other):
return int(self) - int(other)
|
