本文整理汇总了Python中bitstring.BitStream.pos方法的典型用法代码示例。如果您正苦于以下问题：Python BitStream.pos方法的具体用法？Python BitStream.pos怎么用？Python BitStream.pos使用的例子？那么恭喜您, 这里精选的方法代码示例或许可以为您提供帮助。您也可以进一步了解该方法所在类bitstring.BitStream的用法示例。
在下文中一共展示了BitStream.pos方法的1个代码示例，这些例子默认根据受欢迎程度排序。您可以为喜欢或者感觉有用的代码点赞，您的评价将有助于系统推荐出更棒的Python代码示例。
示例1: main
# 需要导入模块: from bitstring import BitStream [as 别名]
# 或者: from bitstring.BitStream import pos [as 别名]
def main(argv):
if len(argv) < 4:
print("Usage: " + argv[0] + " <header dump> <type (hex|bin|raw)> <definition>")
return
filename = argv[1]
typ = argv[2]
definition = []
for argc in range(3, len(argv)):
definition.append(argv[argc])
print("File: " + filename)
print("Definition: " + ", ".join(definition))
print("Type: " + typ)
bits = []
for d in definition:
bits = parseDefinition(d, bits)
content = None
field = None
with open(filename) as f:
if typ == "hex":
content = f.read().strip()
field = BitStream("0x" + content)
if typ == "bin":
content = f.read().strip()
field = BitStream("0b" + content)
if typ == "raw":
field = BitStream(f)
parsed = {}
pos = 0
last_header = None
for bit in bits:
field.pos = pos
bitlen = 0
lenexpr = bit.getBits()
condexpr = bit.getCondition()
for p in sorted(parsed.keys(), key=len, reverse=True):
lenexpr = lenexpr.replace(p, str(parsed[p]))
condexpr = condexpr.replace(p, str(parsed[p]))
try:
bitlen = eval(lenexpr)
except:
print("Error: " + str(bit.getBits()) + " is not a valid size!")
return
try:
cond = eval(condexpr)
except:
print("Error: " + str(bit.getCondition()) + " is not a valid condition! (Parsed to " + condexpr + ")")
return
if cond:
try:
val = field.read(bitlen)
except:
print("Could not read field " + str(bit.getName()) + " with " + str(bitlen) + " bits!")
continue
parsed[bit.getName()] = val.uint
pos += bitlen
if last_header is not bit.getPrefix():
last_header = bit.getPrefix()
print("")
out = bit.getName() + ": "
for t, endian in bit.getTypes():
if t == "hex":
out += "0x" + val.hex + " "
if t == "int":
out += str(endianness(val.uint, endian, int(bitlen))) + " "
if t == "bin":
out += "0b" + val.bin + " "
if t == "str":
s = ""
for si in range(0, len(str(val)[2:]), 2):
out += str(chr(int(str(val)[si + 2:si + 4], 16)))
print(out)