upstream/mercurial-mirror Files · contrib/fixpax.py

smartset: split generatorset classes to avoid cycle...

smartset: split generatorset classes to avoid cycle I uncovered a cycle manifesting in a memory leak by running `hgperfrevset '::tip'`. The cycle was due to generatorset.__init__ assigning a bound method to self.__contains__. Internet sleuthing revealed that assigning a bound method to an instance attribute always creates a cycle. This commit creates two new variants of generatorset for the special cases of ascending and descending generators. The special implementations of __contains__ have been extracted to these classes where they are defined as __contains__. generatorset now implements __new__ and changes the spawned type to one of the new classes if needed. Differential Revision: https://phab.mercurial-scm.org/D1780

Pulkit Goyal - - Load All Authors

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      #!/usr/bin/env python

      # fixpax - fix ownership in bdist_mpkg output

      #

      # Copyright 2015 Matt Mackall <mpm@selenic.com>

      #

      # This software may be used and distributed according to the terms of the

      # MIT license (http://opensource.org/licenses/MIT)

      """Set file ownership to 0 in an Archive.pax.gz.

      Suitable for fixing files bdist_mpkg output:

      *.mpkg/Contents/Packages/*.pkg/Contents/Archive.pax.gz

      """

      from __future__ import absolute_import, print_function

      import gzip

      import os

      import sys

      def fixpax(iname, oname):

          i = gzip.GzipFile(iname)

          o = gzip.GzipFile(oname, "w")

          while True:

              magic = i.read(6)

              dev = i.read(6)

              ino = i.read(6)

              mode = i.read(6)

              i.read(6) # uid

              i.read(6) # gid

              nlink = i.read(6)

              rdev = i.read(6)

              mtime = i.read(11)

              namesize = i.read(6)

              filesize = i.read(11)

              name = i.read(int(namesize, 8))

              data = i.read(int(filesize, 8))

              o.write(magic)

              o.write(dev)

              o.write(ino)

              o.write(mode)

              o.write("000000")

              o.write("000000")

              o.write(nlink)

              o.write(rdev)

              o.write(mtime)

              o.write(namesize)

              o.write(filesize)

              o.write(name)

              o.write(data)

              if name.startswith("TRAILER!!!"):

                  o.write(i.read())

                  break

          o.close()

          i.close()

      if __name__ == '__main__':

          for iname in sys.argv[1:]:

              print('fixing file ownership in %s' % iname)

              oname = sys.argv[1] + '.tmp'

              fixpax(iname, oname)

              os.rename(oname, iname)

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				#!/usr/bin/env python
				# fixpax - fix ownership in bdist_mpkg output
				#
				# Copyright 2015 Matt Mackall <mpm@selenic.com>
				#
				# This software may be used and distributed according to the terms of the
				# MIT license (http://opensource.org/licenses/MIT)

				"""Set file ownership to 0 in an Archive.pax.gz.
				Suitable for fixing files bdist_mpkg output:
				.mpkg/Contents/Packages/.pkg/Contents/Archive.pax.gz
				"""

				from __future__ import absolute_import, print_function
				import gzip
				import os
				import sys

				def fixpax(iname, oname):
				i = gzip.GzipFile(iname)
				o = gzip.GzipFile(oname, "w")

				while True:
				magic = i.read(6)
				dev = i.read(6)
				ino = i.read(6)
				mode = i.read(6)
				i.read(6) # uid
				i.read(6) # gid
				nlink = i.read(6)
				rdev = i.read(6)
				mtime = i.read(11)
				namesize = i.read(6)
				filesize = i.read(11)
				name = i.read(int(namesize, 8))
				data = i.read(int(filesize, 8))

				o.write(magic)
				o.write(dev)
				o.write(ino)
				o.write(mode)
				o.write("000000")
				o.write("000000")
				o.write(nlink)
				o.write(rdev)
				o.write(mtime)
				o.write(namesize)
				o.write(filesize)
				o.write(name)
				o.write(data)

				if name.startswith("TRAILER!!!"):
				o.write(i.read())
				break

				o.close()
				i.close()

				if __name__ == '__main__':
				for iname in sys.argv[1:]:
				print('fixing file ownership in %s' % iname)
				oname = sys.argv[1] + '.tmp'
				fixpax(iname, oname)
				os.rename(oname, iname)