1 # 2 # Utilities 3 # 4 # Copyright (c) 2011 Thomas Graf <tgraf (at] suug.ch> 5 # 6 7 """utility module for netlink 8 9 """ 10 11 from __future__ import absolute_import 12 13 from . import core as netlink 14 from . import capi as capi 15 from string import Formatter 16 import types 17 18 __version__ = '1.0' 19 20 #rename into colored_output 21 def _color(t, c): 22 return '{esc}[{color}m{text}{esc}[0m'.format(esc=b'\x1b'.decode(), color=c, text=t) 23 24 def black(t): 25 return _color(t, 30) 26 27 def red(t): 28 return _color(t, 31) 29 30 def green(t): 31 return _color(t, 32) 32 33 def yellow(t): 34 return _color(t, 33) 35 36 def blue(t): 37 return _color(t, 34) 38 39 def magenta(t): 40 return _color(t, 35) 41 42 def cyan(t): 43 return _color(t, 36) 44 45 def white(t): 46 return _color(t, 37) 47 48 def bold(t): 49 return _color(t, 1) 50 51 def kw(t): 52 return yellow(t) 53 54 def num(t): 55 return str(t) 56 57 def string(t): 58 return t 59 60 def addr(t): 61 return str(t) 62 63 def bad(t): 64 return red(t) 65 66 def good(t): 67 return green(t) 68 69 def title(t): 70 return t 71 72 def boolean(t): 73 return str(t) 74 75 def handle(t): 76 return str(t) 77 78 class MyFormatter(Formatter): 79 def __init__(self, obj, indent=''): 80 self._obj = obj 81 self._indent = indent 82 83 def _nlattr(self, key): 84 value = getattr(self._obj.__class__, key) 85 if not isinstance(value, property): 86 raise ValueError('Invalid formatting string {0}'.format(key)) 87 88 d = getattr(value.fget, 'formatinfo', dict()) 89 90 # value = value.fget() is exactly the same 91 value = getattr(self._obj, key) 92 93 if 'fmt' in d: 94 value = d['fmt'](value) 95 96 title_ = d.get('title', None) 97 98 return title_, str(value) 99 100 def get_value(self, key, args, kwds): 101 # Let default get_value() handle ints 102 if not isinstance(key, str): 103 return Formatter.get_value(self, key, args, kwds) 104 105 # HACK, we allow defining strings via fields to allow 106 # conversions 107 if key[:2] == 's|': 108 return key[2:] 109 110 if key[:2] == 't|': 111 # title mode ("TITLE ATTR") 112 include_title = True 113 elif key[:2] == 'a|': 114 # plain attribute mode ("ATTR") 115 include_title = False 116 else: 117 # No special field, have default get_value() get it 118 return Formatter.get_value(self, key, args, kwds) 119 120 key = key[2:] 121 (title_, value) = self._nlattr(key) 122 123 if include_title: 124 if not title_: 125 title_ = key # fall back to key as title 126 value = '{0} {1}'.format(kw(title_), value) 127 128 return value 129 130 def convert_field(self, value, conversion): 131 if conversion == 'r': 132 return repr(value) 133 elif conversion == 's': 134 return str(value) 135 elif conversion == 'k': 136 return kw(value) 137 elif conversion == 'b': 138 return bold(value) 139 elif conversion is None: 140 return value 141 142 raise ValueError('Unknown converion specifier {0!s}'.format(conversion)) 143 144 def nl(self, format_string=''): 145 return '\n' + self._indent + self.format(format_string) 146 147 NL_BYTE_RATE = 0 148 NL_BIT_RATE = 1 149 150 class Rate(object): 151 def __init__(self, rate, mode=NL_BYTE_RATE): 152 self._rate = rate 153 self._mode = mode 154 155 def __str__(self): 156 return capi.nl_rate2str(self._rate, self._mode, 32)[1] 157 158 def __int__(self): 159 return self._rate 160 161 def __cmp__(self, other): 162 return int(self) - int(other) 163 164 class Size(object): 165 def __init__(self, size): 166 self._size = size 167 168 def __str__(self): 169 return capi.nl_size2str(self._size, 32)[0] 170 171 def __int__(self): 172 return self._size 173 174 def __cmp__(self, other): 175 return int(self) - int(other) 176
