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

Speed up hg grep by avoiding useless manifest parsing...

Speed up hg grep by avoiding useless manifest parsing In the kernel repo (tip = 2b89f7111b96), a "hg grep mpm MAINTAINERS" goes from ~165s to 0.7s. This could get even a bit faster if we broke out of the loop after the first match, but I'm not sure how that would interact with the --follow code. This is obviously an extreme example, but other cases should also benefit from this patch.

Bryan O'Sullivan - - Load All Authors

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      import os, stat

      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):

          '''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 + os.sep

          names = os.listdir(path)

          names.sort()

          for fn in names:

              st = os.lstat(prefix + fn)

              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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				import os, stat

				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):
				'''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 + os.sep
				names = os.listdir(path)
				names.sort()
				for fn in names:
				st = os.lstat(prefix + fn)
				if stat:
				result.append((fn, _mode_to_kind(st.st_mode), st))
				else:
				result.append((fn, _mode_to_kind(st.st_mode)))
				return result