upstream/mercurial-mirror Files · mercurial/pure/osutil.py

compare grep result between target and its parent...

compare grep result between target and its parent I found that typical case is that grep target is added at (*) revision in the tree shown below. +--- 1(*) --- 3 0 +--- 2 ------ 4 Now, I expect 'hg grep --all' to show only rev:1 which is first appearance of target line. But 'hg grep --all' will tell: target line dis-appeared at 3 => 4 target line appeared at 2 => 3 target line dis-appeared at 1 => 2 target line appeared at 0 => 1 because current 'hg grep' implementation compares not between target revision and its parent, but between neighbor revisions in walkthrough order. I checked performance of this patch by "hg grep --follow --all walkchangerevs" on whole Mercurial repo, and patched version could complete as fast as un-patched one.

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      # osutil.py - pure Python version of osutil.c

      #

      #  Copyright 2009 Matt Mackall <mpm@selenic.com> and others

      #

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

      # GNU General Public License version 2, incorporated herein by reference.

      import os

      import stat as _stat

      posixfile = file

      def _mode_to_kind(mode):

          if _stat.S_ISREG(mode): return _stat.S_IFREG

          if _stat.S_ISDIR(mode): return _stat.S_IFDIR

          if _stat.S_ISLNK(mode): return _stat.S_IFLNK

          if _stat.S_ISBLK(mode): return _stat.S_IFBLK

          if _stat.S_ISCHR(mode): return _stat.S_IFCHR

          if _stat.S_ISFIFO(mode): return _stat.S_IFIFO

          if _stat.S_ISSOCK(mode): return _stat.S_IFSOCK

          return mode

      def listdir(path, stat=False, skip=None):

          '''listdir(path, stat=False) -> list_of_tuples

          Return a sorted list containing information about the entries

          in the directory.

          If stat is True, each element is a 3-tuple:

            (name, type, stat object)

          Otherwise, each element is a 2-tuple:

            (name, type)

          '''

          result = []

          prefix = path

          if not prefix.endswith(os.sep):

              prefix += os.sep

          names = os.listdir(path)

          names.sort()

          for fn in names:

              st = os.lstat(prefix + fn)

              if fn == skip and _stat.S_ISDIR(st.st_mode):

                  return []

              if stat:

                  result.append((fn, _mode_to_kind(st.st_mode), st))

              else:

                  result.append((fn, _mode_to_kind(st.st_mode)))

          return result

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				# osutil.py - pure Python version of osutil.c
				#
				# Copyright 2009 Matt Mackall <mpm@selenic.com> and others
				#
				# This software may be used and distributed according to the terms of the
				# GNU General Public License version 2, incorporated herein by reference.

				import os
				import stat as _stat

				posixfile = file

				def _mode_to_kind(mode):
				if _stat.S_ISREG(mode): return _stat.S_IFREG
				if _stat.S_ISDIR(mode): return _stat.S_IFDIR
				if _stat.S_ISLNK(mode): return _stat.S_IFLNK
				if _stat.S_ISBLK(mode): return _stat.S_IFBLK
				if _stat.S_ISCHR(mode): return _stat.S_IFCHR
				if _stat.S_ISFIFO(mode): return _stat.S_IFIFO
				if _stat.S_ISSOCK(mode): return _stat.S_IFSOCK
				return mode

				def listdir(path, stat=False, skip=None):
				'''listdir(path, stat=False) -> list_of_tuples

				Return a sorted list containing information about the entries
				in the directory.

				If stat is True, each element is a 3-tuple:

				(name, type, stat object)

				Otherwise, each element is a 2-tuple:

				(name, type)
				'''
				result = []
				prefix = path
				if not prefix.endswith(os.sep):
				prefix += os.sep
				names = os.listdir(path)
				names.sort()
				for fn in names:
				st = os.lstat(prefix + fn)
				if fn == skip and _stat.S_ISDIR(st.st_mode):
				return []
				if stat:
				result.append((fn, _mode_to_kind(st.st_mode), st))
				else:
				result.append((fn, _mode_to_kind(st.st_mode)))
				return result