Issue #16113: integrade SHA-3 (Keccak) patch from http://hg.python.org/sandbox/cheimes

Modules/_sha3/cleanup.py

@@ -0,0 +1,49 @@
+#!/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)