/usr/lib/python2.7/dist-packages/linaro_image_tools/hwpack/hwpack_reader.py is in python-linaro-image-tools 2016.05-1.1.
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1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 144 145 146 147 148 149 150 151 152 153 154 155 156 157 158 159 160 161 162 163 164 165 166 167 168 169 170 171 172 173 174 175 176 177 178 179 180 181 182 183 184 185 186 187 188 189 190 191 192 | # Copyright (C) 2012 Linaro
#
# Author: Milo Casagrande <milo.casagrande@linaro.org>
#
# This file is part of Linaro Image Tools.
#
# Linaro Image Tools is free software: you can redistribute it and/or modify
# it under the terms of the GNU General Public License as published by
# the Free Software Foundation, either version 3 of the License, or
# (at your option) any later version.
#
# Linaro Image Tools is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
# GNU General Public License for more details.
#
# You should have received a copy of the GNU General Public License
# along with Linaro Image Tools. If not, see <http://www.gnu.org/licenses/>.
from linaro_image_tools.hwpack.handler import HardwarepackHandler
from linaro_image_tools.hwpack.hwpack_fields import (
FORMAT_FIELD,
NAME_FIELD,
BOARDS_FIELD,
BOOTLOADERS_FIELD,
)
from os import linesep as LINE_SEP
# Fields necessary for the string representation of the hardware pack supported
# boards and bootlaoders.
HALF_SEPARATOR = '+--------------------------------------'
ENDING = '+'
SEPARATOR = HALF_SEPARATOR * 2 + ENDING
FORMAT = '{:<80}'
CENTER_ALIGN = '{:^80}'
ELEMENT_FORMAT = '{:<39}| {:<39}'
class HwpackReaderError(Exception):
"""General error raised by HwpackReader."""
def __init__(self, value):
self.value = value
def __str__(self):
return repr(self.value)
class Hwpack(object):
"""A simple representation of an hardware pack and its value."""
def __init__(self):
self._hwpack = None
self._boards = None
self._bootloaders = None
self._name = None
@property
def hwpack(self):
"""The hardware pack it refers to."""
return self._hwpack
def sethwpack(self, value):
"""Sets the hwpack field."""
self._hwpack = value
@property
def boards(self):
"""The boards field of this hardware pack."""
return self._boards
def setboards(self, value):
"""Sets the boards field."""
self._boards = value
@property
def name(self):
"""The name field of this hardware pack."""
return self._name
def setname(self, value):
"""Sets the name field."""
self._name = value
@property
def bootloaders(self):
"""The bootlaoders field of this hardware pack."""
return self._bootloaders
def setbootloaders(self, value):
"""Sets the bootlaoders field."""
self._bootloaders = value
def __eq__(self, other):
"""Equality method."""
equal = False
if isinstance(other, Hwpack):
equal = (self.name == other.name and
self.boards == other.boards and
self.hwpack == other.hwpack and
self.bootloaders == other.bootloaders)
return equal
def __hash__(self):
return hash(frozenset(self.bootloaders), frozenset(self.boards),
self.name, self.hwpack)
def __str__(self):
"""String representation of this hwapack supported elements."""
string = FORMAT.format("Read hardware pack: %s" % self.hwpack)
string += LINE_SEP
string += FORMAT.format(SEPARATOR)
string += LINE_SEP
string += ELEMENT_FORMAT.format("Supported boards",
"Supported bootloaders")
string += LINE_SEP
string += FORMAT.format(SEPARATOR)
string += LINE_SEP
if self.boards:
for key, value in self.boards.iteritems():
if value.get(BOOTLOADERS_FIELD, None) is not None:
bootloaders = value.get(BOOTLOADERS_FIELD)
supported_bootloaders = bootloaders.keys()
else:
supported_bootloaders = self.bootloaders.keys()
string += ELEMENT_FORMAT.format(
key, ",".join(supported_bootloaders))
string += LINE_SEP
else:
# If we pass a converted file with just a single board, we do not
# have the boards section, and we default to the name of the hwpack
if self.bootloaders:
supported_bootloaders = self.bootloaders.keys()
string += ELEMENT_FORMAT.format(
self.name, ",".join(supported_bootloaders))
string += LINE_SEP
else:
string += CENTER_ALIGN.format("No supported boards and "
"bootloaders")
string += LINE_SEP
string += FORMAT.format(SEPARATOR)
return string + LINE_SEP
class HwpackReader(object):
"""Reads the information contained in a hwpack """
def __init__(self, hwpacks):
"""Create a new instance.
:param hwpacks: The list of hardware packs to read from."""
self.hwpacks = hwpacks
# Where we store all the info from the hwpack.
self._supported_elements = []
@property
def supported_elements(self):
"""Gets the supported elements of by all the hardwapare packs."""
return self._supported_elements
def _read_hwpacks_metadata(self):
"""Reads the hardware pack metadata file, and prints information about
the supported boards and bootloaders."""
for tarball in self.hwpacks:
with HardwarepackHandler([tarball]) as handler:
hwpack_format = handler.get_field(FORMAT_FIELD)[0]
if hwpack_format.format_as_string == "3.0":
local_hwpack = Hwpack()
local_hwpack.sethwpack(tarball)
local_hwpack.setname(handler.get_field(NAME_FIELD)[0])
local_hwpack.setboards(handler.get_field(BOARDS_FIELD)[0])
local_hwpack.setbootloaders(
handler.get_field(BOOTLOADERS_FIELD)[0])
self.supported_elements.append(local_hwpack)
else:
raise HwpackReaderError("Hardwarepack '%s' cannot be "
"read, unsupported format." %
(tarball))
def get_supported_boards(self):
"""Prints the necessary information.
:return A string representation of the information."""
self._read_hwpacks_metadata()
return str(self)
def __str__(self):
"""The string representation of this reader. It is a printable
representation of the necessary information."""
hwpack_reader = ""
for element in self.supported_elements:
hwpack_reader += str(element)
return hwpack_reader
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