mirror of
https://github.com/dobin/avred
synced 2026-06-08 13:54:13 +00:00
Dobin Rutishauser
60 lines
1.8 KiB
Python
60 lines
1.8 KiB
Python
import sys
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from struct import unpack_from
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codec = 'latin1' # Assume 'latin1' unless redefined by the 'dir' stream
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PYTHON2 = sys.version_info[0] < 3
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if PYTHON2:
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def decode(x):
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return x.decode(codec, errors='replace').encode('utf-8')
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else:
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xrange = range
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def ord(x):
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return x
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def decode(x):
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return x.decode(codec, errors='replace')
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def hexdump(buffer, length=16):
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theHex = lambda data: ' '.join('{:02X}'.format(ord(i)) for i in data)
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theStr = lambda data: ''.join(chr(ord(i)) if (31 < ord(i) < 127) else '.' for i in data)
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result = ''
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for offset in xrange(0, len(buffer), length):
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data = buffer[offset:offset + length]
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result += '{:08X} {:{}} {}\n'.format(offset, theHex(data), length * 3 - 1, theStr(data))
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return result
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def getWord(buffer, offset, endian):
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return unpack_from(endian + 'H', buffer, offset)[0]
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def getDWord(buffer, offset, endian):
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return unpack_from(endian + 'L', buffer, offset)[0]
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def skipStructure(buffer, offset, endian, isLengthDW, elementSize, checkForMinusOne):
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if isLengthDW:
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length = getDWord(buffer, offset, endian)
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offset += 4
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skip = checkForMinusOne and (length == 0xFFFFFFFF)
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else:
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length = getWord(buffer, offset, endian)
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offset += 2
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skip = checkForMinusOne and (length == 0xFFFF)
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if not skip:
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offset += length * elementSize
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return offset
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def getVar(buffer, offset, endian, isDWord):
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if isDWord:
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value = getDWord(buffer, offset, endian)
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offset += 4
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else:
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value = getWord(buffer, offset, endian)
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offset += 2
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return offset, value
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def getTypeAndLength(buffer, offset, endian):
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if endian == '>':
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return ord(buffer[offset]), ord(buffer[offset + 1])
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else:
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return ord(buffer[offset + 1]), ord(buffer[offset])
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