[PATCH] Harden os.system
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[PATCH] Harden os.system
From: Bryan O'Sullivan <bos@serpentine.com>
Add util.system function. This is similar to os.system, but will
either succeed (if the process finishes with a zero exit code) or raise
a util.CommandError (if the process exits uncleanly or is killed by
a signal).
Add util.explain_exit function. This tends to be ubiquitous in code
that calls other processes, and must describe what has gone wrong.
Change some uses of os.system over to util.system.
manifest hash: e3bf4adcac5b915432ec0af00efdbcef86bea4b1
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# httprangereader.py - just what it says
#
# Copyright 2005 Matt Mackall <mpm@selenic.com>
#
# This software may be used and distributed according to the terms
# of the GNU General Public License, incorporated herein by reference.
import byterange, urllib2
class httprangereader:
def __init__(self, url):
self.url = url
self.pos = 0
def seek(self, pos):
self.pos = pos
def read(self, bytes=None):
opener = urllib2.build_opener(byterange.HTTPRangeHandler())
urllib2.install_opener(opener)
req = urllib2.Request(self.url)
end = ''
if bytes: end = self.pos + bytes
req.add_header('Range', 'bytes=%d-%s' % (self.pos, end))
f = urllib2.urlopen(req)
return f.read()