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#! /usr/bin/env python
"""download and extract the libevent source archive
"""
import sys
import os
import urllib
import tarfile
import StringIO
import tempfile
import shutil
import copy
try:
from hashlib import md5
except ImportError:
from md5 import md5
# python 2.4's tarfile doesn't have extractall.
def extractall(self, path="."):
for tarinfo in self:
if tarinfo.isdir():
# Extract directories with a safe mode.
tarinfo = copy.copy(tarinfo)
tarinfo.mode = 0700
self.extract(tarinfo, path)
def download_and_extract(url, digest):
assert url.endswith(".tar.gz"), "can only download .tar.gz files"
dst = os.path.abspath("libevent-src")
if os.path.exists(dst):
sys.exit("Error: path %s already exists" % dst)
tmpdir = tempfile.mkdtemp(prefix="tmp-libevent-src", dir=".")
try:
dirname = os.path.join(tmpdir, url.split("/")[-1][:-len(".tar.gz")])
print "downloading libevent source from %s" % url
tgz = urllib.urlopen(url).read()
if md5(tgz).hexdigest() != digest:
sys.exit("Error: wrong md5 sum")
print "extracting to %s" % dst
tf = tarfile.open("libevent-src.tar.gz",
fileobj=StringIO.StringIO(tgz),
mode='r:gz')
extractall(tf, tmpdir)
os.rename(dirname, dst)
print "setup.py will now build libevent and link with it statically"
finally:
shutil.rmtree(tmpdir)
if __name__ == '__main__':
os.chdir(os.path.dirname(os.path.abspath(__file__)))
download_and_extract(
"http://monkey.org/~provos/libevent-1.4.14b-stable.tar.gz",
"a00e037e4d3f9e4fe9893e8a2d27918c")
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