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

bdiff: adjust criteria for getting optimal longest match in the A side middle...

bdiff: adjust criteria for getting optimal longest match in the A side middle We prefer matches closer to the middle to balance recursion, as introduced in f1ca249696ed. For ranges with uneven length, matches starting exactly in the middle should have preference. That will be optimal for matches of length 1. We will thus accept equality in the half check. For ranges with even length, half was ceil'ed when calculated but we got the preference for low matches from the 'less than half' check. To get the same result as before when we also accept equality, floor it. Without that, test-annotate.t would show some different (still correct but less optimal) results. This will change the heuristics. Tests shows a slightly different output - and sometimes slightly smaller bundles. The bundle size for 4.0 (hg bundle --base null -r 4.0 x.hg) happens to go from 22804885 to 22803824 bytes - an 0.005% reduction.

Yuya Nishihara - - Load All Authors

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      from __future__ import absolute_import

      import array

      import errno

      import fcntl

      import os

      import sys

      from . import (

          encoding,

          osutil,

      )

      def _rcfiles(path):

          rcs = [os.path.join(path, 'hgrc')]

          rcdir = os.path.join(path, 'hgrc.d')

          try:

              rcs.extend([os.path.join(rcdir, f)

                          for f, kind in osutil.listdir(rcdir)

                          if f.endswith(".rc")])

          except OSError:

              pass

          return rcs

      def systemrcpath():

          path = []

          if sys.platform == 'plan9':

              root = 'lib/mercurial'

          else:

              root = 'etc/mercurial'

          # old mod_python does not set sys.argv

          if len(getattr(sys, 'argv', [])) > 0:

              p = os.path.dirname(os.path.dirname(sys.argv[0]))

              if p != '/':

                  path.extend(_rcfiles(os.path.join(p, root)))

          path.extend(_rcfiles('/' + root))

          return path

      def userrcpath():

          if sys.platform == 'plan9':

              return [encoding.environ['home'] + '/lib/hgrc']

          else:

              return [os.path.expanduser('~/.hgrc')]

      def termsize(ui):

          try:

              import termios

              TIOCGWINSZ = termios.TIOCGWINSZ  # unavailable on IRIX (issue3449)

          except (AttributeError, ImportError):

              return 80, 24

          for dev in (ui.ferr, ui.fout, ui.fin):

              try:

                  try:

                      fd = dev.fileno()

                  except AttributeError:

                      continue

                  if not os.isatty(fd):

                      continue

                  arri = fcntl.ioctl(fd, TIOCGWINSZ, '\0' * 8)

                  height, width = array.array('h', arri)[:2]

                  if width > 0 and height > 0:

                      return width, height

              except ValueError:

                  pass

              except IOError as e:

                  if e[0] == errno.EINVAL:

                      pass

                  else:

                      raise

          return 80, 24

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				from __future__ import absolute_import

				import array
				import errno
				import fcntl
				import os
				import sys

				from . import (
				encoding,
				osutil,
				)

				def _rcfiles(path):
				rcs = [os.path.join(path, 'hgrc')]
				rcdir = os.path.join(path, 'hgrc.d')
				try:
				rcs.extend([os.path.join(rcdir, f)
				for f, kind in osutil.listdir(rcdir)
				if f.endswith(".rc")])
				except OSError:
				pass
				return rcs

				def systemrcpath():
				path = []
				if sys.platform == 'plan9':
				root = 'lib/mercurial'
				else:
				root = 'etc/mercurial'
				# old mod_python does not set sys.argv
				if len(getattr(sys, 'argv', [])) > 0:
				p = os.path.dirname(os.path.dirname(sys.argv[0]))
				if p != '/':
				path.extend(_rcfiles(os.path.join(p, root)))
				path.extend(_rcfiles('/' + root))
				return path

				def userrcpath():
				if sys.platform == 'plan9':
				return [encoding.environ['home'] + '/lib/hgrc']
				else:
				return [os.path.expanduser('~/.hgrc')]

				def termsize(ui):
				try:
				import termios
				TIOCGWINSZ = termios.TIOCGWINSZ # unavailable on IRIX (issue3449)
				except (AttributeError, ImportError):
				return 80, 24

				for dev in (ui.ferr, ui.fout, ui.fin):
				try:
				try:
				fd = dev.fileno()
				except AttributeError:
				continue
				if not os.isatty(fd):
				continue
				arri = fcntl.ioctl(fd, TIOCGWINSZ, '\0' * 8)
				height, width = array.array('h', arri)[:2]
				if width > 0 and height > 0:
				return width, height
				except ValueError:
				pass
				except IOError as e:
				if e[0] == errno.EINVAL:
				pass
				else:
				raise
				return 80, 24