/usr/lib/python2.7/dist-packages/jpylyzer/byteconv.py is in python-jpylyzer 1.17.0-1.
This file is owned by root:root, with mode 0o644.
The actual contents of the file can be viewed below.
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# This program is free software: you can redistribute it and/or modify
# it under the terms of the GNU Lesser General Public License as published by
# the Free Software Foundation, either version 3 of the License, or
# (at your option) any later version.
#
# This program 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 Lesser General Public License for more details.
#
# You should have received a copy of the GNU Lesser General Public License
# along with this program. If not, see <http://www.gnu.org/licenses/>.
#
import struct
import binascii
import unicodedata
# Convert byte object of bOrder byteorder to format using formatCharacter
# Return -9999 if unpack raised an error
def _doConv(bytestr, bOrder, formatCharacter):
# Format string for unpack
formatStr = bOrder + formatCharacter
try:
result = struct.unpack(formatStr, bytestr)[0]
except:
result = -9999
return(result)
def bytesToULongLong(bytes):
# Unpack 8 byte string to unsigned long long integer, assuming big-endian
# byte order.
return _doConv(bytes, ">", "Q")
def bytesToUInt(bytes):
# Unpack 4 byte string to unsigned integer, assuming big-endian byte order.
return _doConv(bytes, ">", "I")
def bytesToUShortInt(bytes):
# Unpack 2 byte string to unsigned short integer, assuming big-endian
# byte order
return _doConv(bytes, ">", "H")
def bytesToUnsignedChar(bytes):
# Unpack 1 byte string to unsigned character/integer, assuming big-endian
# byte order.
return _doConv(bytes, ">", "B")
def bytesToSignedChar(bytes):
# Unpack 1 byte string to signed character/integer, assuming big-endian
# byte order.
return _doConv(bytes, ">", "b")
def bytesToInteger(bytes):
# Unpack byte string of any length to integer.
#
# Taken from:
# http://stackoverflow.com/questions/4358285/
#
# JvdK: what endianness is assumed here? Could go wrong on some systems?
# binascii.hexlify will be obsolete in python3 soon
# They will add a .tohex() method to bytes class
# Issue 3532 bugs.python.org
try:
result = int(binascii.hexlify(bytes), 16)
except:
result = -9999
return (result)
def isctrl(c):
# Returns True if byte corresponds to device control character
# (See also: http://www.w3schools.com/tags/ref_ascii.asp)
return (ord(c) < 32 or ord(c) == 127)
# return (0 <= ord(c) <= 8) or (ord(c) == 12) or (14 <= ord(c) < 32)
def bytesToHex(bytes):
# Return hexadecimal ascii representation of bytes
return binascii.hexlify(bytes)
def containsControlCharacters(bytes):
# Returns True if bytes object contains control characters
for i in range(len(bytes)):
if isctrl(bytes[i:i + 1]):
return(True)
return(False)
def removeControlCharacters(string):
# Remove control characters from string
# Adapted from: http://stackoverflow.com/a/19016117/1209004
# Tab, newline and return are part of C0, but are allowed in XML
allowedChars = [u'\t', u'\n', u'\r']
return "".join(ch for ch in string if unicodedata.category(ch)[0] != "C" or ch in allowedChars)
def removeNullTerminator(bytes):
# Remove null terminator from bytes
bytesOut = bytes.rstrip(b'\x00')
return(bytesOut)
def bytesToText(bytes):
# Unpack byte object to text string, assuming big-endian
# byte order.
# Set encoding and error mode
enc = "utf-8"
errorMode = "strict"
try:
# Decode to utf-8
string = bytes.decode(encoding=enc, errors=errorMode)
# Remove control characters
result = removeControlCharacters(string)
except:
# Return empty string if bytes cannot be decoded
result = ""
return(result)
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