mirror of
https://github.com/volatilityfoundation/volatility
synced 2026-06-08 18:04:46 +00:00
Mike Auty
109 lines
3.4 KiB
Python
109 lines
3.4 KiB
Python
# Volatility
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#
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# This file is part of Volatility.
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#
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# Volatility is free software; you can redistribute it and/or modify
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# it under the terms of the GNU General Public License as published by
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# the Free Software Foundation; either version 2 of the License, or
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# (at your option) any later version.
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#
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# Volatility is distributed in the hope that it will be useful,
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# but WITHOUT ANY WARRANTY; without even the implied warranty of
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# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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# GNU General Public License for more details.
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#
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# You should have received a copy of the GNU General Public License
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# along with Volatility. If not, see <http://www.gnu.org/licenses/>.
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#
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import re
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class FormatSpec(object):
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def __init__(self, string = '', **kwargs):
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self.fill = ''
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self.align = ''
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self.sign = ''
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self.altform = False
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self.minwidth = -1
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self.precision = -1
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self.formtype = ''
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if string != '':
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self.from_string(string)
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# Ensure we parse the remaining arguments after the string to that they override
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self.from_specs(**kwargs)
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def from_specs(self, fill = None, align = None, sign = None, altform = None, minwidth = None, precision = None, formtype = None):
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## Allow setting individual elements using kwargs
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if fill is not None:
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self.fill = fill
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if align is not None:
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self.align = align
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if sign is not None:
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self.sign = sign
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if altform is not None:
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self.altform = altform
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if minwidth is not None:
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self.minwidth = minwidth
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if precision is not None:
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self.precision = precision
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if formtype is not None:
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self.formtype = formtype
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def from_string(self, formatspec):
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# Format specifier regular expression
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regexp = "\A(.[<>=^]|[<>=^])?([-+ ]|\(\))?(#?)(0?)(\d*)(\.\d+)?(.)?\Z"
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match = re.search(regexp, formatspec)
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if match is None:
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raise ValueError("Invalid format specification: " + formatspec)
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if match.group(1):
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fillalign = match.group(1)
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if len(fillalign) > 1:
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self.fill = fillalign[0]
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self.align = fillalign[1]
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elif fillalign:
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self.align = fillalign
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if match.group(2):
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self.sign = match.group(2)
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if match.group(3):
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self.altform = len(match.group(3)) > 0
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if len(match.group(4)):
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if not self.fill:
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self.fill = "0"
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if not self.align:
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self.align = "="
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if match.group(5):
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self.minwidth = int(match.group(5))
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if match.group(6):
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self.precision = int(match.group(6)[1:])
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if match.group(7):
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self.formtype = match.group(7)
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def to_string(self):
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formatspec = ""
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if self.align:
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formatspec = self.fill + self.align
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formatspec += self.sign
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if self.sign == '(':
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formatspec += ')'
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if self.altform:
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formatspec += '#'
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if self.minwidth >= 0:
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formatspec += str(self.minwidth)
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if self.precision >= 0:
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formatspec += '.' + str(self.precision)
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formatspec += self.formtype
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return formatspec
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def __str__(self):
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return self.to_string()
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def __repr__(self):
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return "<FormatSpec (" + self.to_string() + ")>"
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