upstream/mercurial-mirror Files · tests/md5sum.py

linelog: add a Python implementation of the linelog datastructure...

linelog: add a Python implementation of the linelog datastructure This datastructure was originally developed by Jun Wu at Facebook, inspired by SCCS weaves. It's useful as a cache for blame information, but also is the magic that makes `hg absorb` easy to implement. In service of importing the code to Mercurial, I wanted to actually /understand/ it, and once I did I decided to take a run at implementing it. The help/internals/linelog.txt document is the README from Jun Wu's implementaiton. It all applies to our linelog implementation. Differential Revision: https://phab.mercurial-scm.org/D3990

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      #!/usr/bin/env python

      #

      # Based on python's Tools/scripts/md5sum.py

      #

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

      # of the PYTHON SOFTWARE FOUNDATION LICENSE VERSION 2, which is

      # GPL-compatible.

      from __future__ import absolute_import

      import hashlib

      import os

      import sys

      try:

          import msvcrt

          msvcrt.setmode(sys.stdout.fileno(), os.O_BINARY)

          msvcrt.setmode(sys.stderr.fileno(), os.O_BINARY)

      except ImportError:

          pass

      for filename in sys.argv[1:]:

          try:

              fp = open(filename, 'rb')

          except IOError as msg:

              sys.stderr.write('%s: Can\'t open: %s\n' % (filename, msg))

              sys.exit(1)

          m = hashlib.md5()

          try:

              for data in iter(lambda: fp.read(8192), b''):

                  m.update(data)

          except IOError as msg:

              sys.stderr.write('%s: I/O error: %s\n' % (filename, msg))

              sys.exit(1)

          sys.stdout.write('%s  %s\n' % (m.hexdigest(), filename))

      sys.exit(0)

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				#!/usr/bin/env python
				#
				# Based on python's Tools/scripts/md5sum.py
				#
				# This software may be used and distributed according to the terms
				# of the PYTHON SOFTWARE FOUNDATION LICENSE VERSION 2, which is
				# GPL-compatible.

				from __future__ import absolute_import

				import hashlib
				import os
				import sys

				try:
				import msvcrt
				msvcrt.setmode(sys.stdout.fileno(), os.O_BINARY)
				msvcrt.setmode(sys.stderr.fileno(), os.O_BINARY)
				except ImportError:
				pass

				for filename in sys.argv[1:]:
				try:
				fp = open(filename, 'rb')
				except IOError as msg:
				sys.stderr.write('%s: Can\'t open: %s\n' % (filename, msg))
				sys.exit(1)

				m = hashlib.md5()
				try:
				for data in iter(lambda: fp.read(8192), b''):
				m.update(data)
				except IOError as msg:
				sys.stderr.write('%s: I/O error: %s\n' % (filename, msg))
				sys.exit(1)
				sys.stdout.write('%s %s\n' % (m.hexdigest(), filename))

				sys.exit(0)