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# Licensed under the Apache License: http://www.apache.org/licenses/LICENSE-2.0
# For details: https://bitbucket.org/ned/coveragepy/src/default/NOTICE.txt
import binascii
import dis
import marshal
import struct
import sys
import time
import types
def show_pyc_file(fname):
f = open(fname, "rb")
magic = f.read(4)
moddate = f.read(4)
modtime = time.asctime(time.localtime(struct.unpack('<L', moddate)[0]))
print("magic %s" % (binascii.hexlify(magic)))
print("moddate %s (%s)" % (binascii.hexlify(moddate), modtime))
code = marshal.load(f)
show_code(code)
def show_py_file(fname):
text = open(fname).read().replace('\r\n', '\n')
show_py_text(text, fname=fname)
def show_py_text(text, fname="<string>"):
code = compile(text, fname, "exec")
show_code(code)
def show_code(code, indent=''):
print("%scode" % indent)
indent += ' '
print("%sargcount %d" % (indent, code.co_argcount))
print("%snlocals %d" % (indent, code.co_nlocals))
print("%sstacksize %d" % (indent, code.co_stacksize))
print("%sflags %04x" % (indent, code.co_flags))
show_hex("code", code.co_code, indent=indent)
dis.disassemble(code)
print("%sconsts" % indent)
for const in code.co_consts:
if type(const) == types.CodeType:
show_code(const, indent+' ')
else:
print(" %s%r" % (indent, const))
print("%snames %r" % (indent, code.co_names))
print("%svarnames %r" % (indent, code.co_varnames))
print("%sfreevars %r" % (indent, code.co_freevars))
print("%scellvars %r" % (indent, code.co_cellvars))
print("%sfilename %r" % (indent, code.co_filename))
print("%sname %r" % (indent, code.co_name))
print("%sfirstlineno %d" % (indent, code.co_firstlineno))
show_hex("lnotab", code.co_lnotab, indent=indent)
def show_hex(label, h, indent):
h = binascii.hexlify(h)
if len(h) < 60:
print("%s%s %s" % (indent, label, h))
else:
print("%s%s" % (indent, label))
for i in range(0, len(h), 60):
print("%s %s" % (indent, h[i:i+60]))
def show_file(fname):
if fname.endswith('pyc'):
show_pyc_file(fname)
elif fname.endswith('py'):
show_py_file(fname)
else:
print("Odd file:", fname)
def main(args):
if args[0] == '-c':
show_py_text(" ".join(args[1:]).replace(";", "\n"))
else:
for a in args:
show_file(a)
if __name__ == '__main__':
main(sys.argv[1:])
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