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#
# This file is part of Checkbox.
#
# Copyright 2008 Canonical Ltd.
#
# Checkbox 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.
#
# Checkbox 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 Checkbox. If not, see <http://www.gnu.org/licenses/>.
#
import re
def string_to_type(value):
conversion_table = (
("(yes|true)", lambda v: True),
("(no|false)", lambda v: False),
("\d+", lambda v: int(v.group(0))),
("\d+\.\d+", lambda v: float(v.group(0))),
("(\d+) ?([kmgt]?b?)", lambda v: int(v.group(1))),
("(\d+\.\d+) ?([kmgt]?b?)", lambda v: float(v.group(1))),
("(\d+) ?([kmgt]?hz?)", lambda v: int(v.group(1))),
("(\d+\.\d+) ?([kmgt]?hz?)", lambda v: float(v.group(1))))
multiplier_table = (
("b", 1),
("kb?", 1024),
("mb?", 1024 * 1024),
("gb?", 1024 * 1024 * 1024),
("tb?", 1024 * 1024 * 1024 * 1024),
("hz", 1),
("khz?", 1024),
("mhz?", 1024 * 1024),
("ghz?", 1024 * 1024 * 1024),
("thz?", 1024 * 1024 * 1024 * 1024))
if isinstance(value, basestring):
for regex, conversion in conversion_table:
match = re.match("^%s$" % regex, value, re.IGNORECASE)
if match:
value = conversion(match)
if len(match.groups()) < 2:
return value
unit = match.group(2)
for regex, multiplier in multiplier_table:
match = re.match("^%s$" % regex, unit, re.IGNORECASE)
if match:
value *= multiplier
return value
else:
raise Exception, "Unknown multiplier: %s" % unit
return value
def sizeof_bytes(bytes):
for x in ["bytes", "KB", "MB", "GB", "TB"]:
string = "%3.1f%s" % (bytes, x)
if bytes < 1024.0:
break
bytes /= 1024.0
return string
def sizeof_hertz(hertz):
for x in ["Hz", "KHz", "MHz", "GHz"]:
string = "%3.1f%s" % (hertz, x)
if hertz < 1000.0:
break
hertz /= 1000.0
return string
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