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|
#
# Utilities
#
# Copyright (c) 2011 Thomas Graf <tgraf@suug.ch>
#
"""utility module for netlink
"""
from __future__ import absolute_import
from . import capi as capi
from string import Formatter
__version__ = "1.0"
# rename into colored_output
def _color(t, c):
return "{esc}[{color}m{text}{esc}[0m".format(esc=b"\x1b".decode(), 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.__class__, key)
if not isinstance(value, property):
raise ValueError("Invalid formatting string {0}".format(key))
d = getattr(value.fget, "formatinfo", {})
# value = value.fget() is exactly the same
value = getattr(self._obj, key)
if "fmt" in d:
value = d["fmt"](value)
title_ = d.get("title", None)
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)
|
