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#!/usr/bin/env python
# Copyright (C) 2012 Christian Heimes (christian@python.org)
# Licensed to PSF under a Contributor Agreement.
#
# cleanup Keccak sources
import os
import re
CPP1 = re.compile("^//(.*)")
CPP2 = re.compile("\ //(.*)")
STATICS = ("void ", "int ", "HashReturn ", "const UINT64 ", "UINT16 ")
HERE = os.path.dirname(os.path.abspath(__file__))
KECCAK = os.path.join(HERE, "keccak")
def getfiles():
for name in os.listdir(KECCAK):
name = os.path.join(KECCAK, name)
if os.path.isfile(name):
yield name
def cleanup(f):
buf = []
for line in f:
# mark all functions and global data as static
if line.startswith(STATICS):
buf.append("static " + line)
continue
# remove UINT64 typedef, we have our own
if line.startswith("typedef unsigned long long int"):
buf.append("/* %s */\n" % line.strip())
continue
# remove #include "brg_endian.h"
if "brg_endian.h" in line:
buf.append("/* %s */\n" % line.strip())
continue
# transform C++ comments into ANSI C comments
line = CPP1.sub(r"/* \1 */", line)
line = CPP2.sub(r" /* \1 */", line)
buf.append(line)
return "".join(buf)
for name in getfiles():
with open(name) as f:
res = cleanup(f)
with open(name, "w") as f:
f.write(res)
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