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import zipfile
import os
import urllib2
import shutil
def install_egg_file(filename, dest_dir, fileobj=None):
"""
Install the egg file at `filename` into `dest_dir`.
Can also be installed from a `fileobj`; if given then `filename`
is just for error reporting.
"""
# Since the filename may be a URL, we can't trust os.path:
canonical_filename = filename.replace(os.sep, '/')
# This is the convention for egg file naming:
base_name = canonical_filename.split('/')[-1]
package_name = base_name.split('-')[0]
dest_dir = os.path.join(dest_dir, base_name)
zf = zipfile.ZipFile(fileobj or filename)
badfile = zf.testzip()
if badfile:
raise ValueError(
"Zip file %s is corrupted; first bad file: %r"
% (filename, badfile))
for file_info in zf.infolist():
fn = file_info.filename.lstrip('/') # make sure it's relative
if fn.startswith('EGG-INFO/'):
fn = package_name + '.egg-info' + fn[len('EGG-INFO'):]
dest_fn = os.path.join(dest_dir, fn)
if not os.path.exists(os.path.dirname(dest_fn)):
os.makedirs(os.path.dirname(dest_fn))
if fn.endswith('/') and not os.path.exists(dest_fn):
os.makedir(dest_fn)
continue
f = open(dest_fn, 'wb')
f.write(zf.read(file_info.filename))
f.close()
def install_egg_from_url(url, dest_dir, package_name=None,
unpack=True):
"""
Install the egg file located at `url` into `dest_dir`. If
`package_name` is not given, then the package name is determined
from the url.
"""
f = urllib2.urlopen(url)
try:
if unpack:
install_egg_file(url, dest_dir, package_name=package_name,
fileobj=f)
else:
fn_out = os.path.join(dest_dir, url.split('/')[-1])
if not os.path.exists(os.path.dirname(fn_out)):
os.makedirs(os.path.dirname(fn_out))
fout = open(fn_out, 'wb')
shutil.copyfileobj(f, fout)
fout.close()
finally:
f.close()
if __name__ == '__main__':
import sys
install_egg_file(*sys.argv[1:])
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