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

scmutil: add a simple key-value file helper...

scmutil: add a simple key-value file helper The purpose of the added class is to serve purposes like save files of shelve or state files of shelve, rebase and histedit. Keys of these files can be alphanumeric and start with letters, while values must not contain newlines. In light of Mercurial's reluctancy to use Python's json module, this tries to provide a reasonable alternative for a non-nested named data. Comparing to current approach of storing state in plain text files, where semantic meaning of lines of text is only determined by their oreder, simple key-value file allows for reordering lines and thus helps handle optional values. Initial use-case I see for this is obs-shelve's shelve files. Later we can possibly migrate state files to this approach. The test is in a new file beause I did not figure out where to put it within existing test suite. If you give me a better idea, I will gladly follow it.

Pulkit Goyal - - 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,

          pycompat,

      )

      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 pycompat.sysplatform == '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(pycompat.sysargv[0]))

              if p != '/':

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

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

          return path

      def userrcpath():

          if pycompat.sysplatform == 'plan9':

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

          elif pycompat.sysplatform == 'darwin':

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

          else:

              confighome = encoding.environ.get('XDG_CONFIG_HOME')

              if confighome is None or not os.path.isabs(confighome):

                  confighome = os.path.expanduser('~/.config')

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

                      os.path.join(confighome, 'hg', '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(r'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,
				pycompat,
				)

				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 pycompat.sysplatform == '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(pycompat.sysargv[0]))
				if p != '/':
				path.extend(_rcfiles(os.path.join(p, root)))
				path.extend(_rcfiles('/' + root))
				return path

				def userrcpath():
				if pycompat.sysplatform == 'plan9':
				return [encoding.environ['home'] + '/lib/hgrc']
				elif pycompat.sysplatform == 'darwin':
				return [os.path.expanduser('~/.hgrc')]
				else:
				confighome = encoding.environ.get('XDG_CONFIG_HOME')
				if confighome is None or not os.path.isabs(confighome):
				confighome = os.path.expanduser('~/.config')

				return [os.path.expanduser('~/.hgrc'),
				os.path.join(confighome, 'hg', '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(r'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