upstream/mercurial-mirror Files · mercurial/httprangereader.py

Create an atomic opener that does not automatically rename on close...

Create an atomic opener that does not automatically rename on close The revlog.checkinlinesize() uses an atomic opener to replace the index file after converting it from inline to traditional .i and .d files. If this operation is interrupted, the atomic file class can overwrite a valid file with a partially written one. This patch introduces an atomic opener that does not automatically replace the destination file with the tempfile. This way an interrupted checkinlinesize() call turns into a noop.

Eric Hopper - - Load All Authors

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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(object):

          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()

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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(object):
				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()