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

perf: import newer modules separately for earlier Mercurial...

perf: import newer modules separately for earlier Mercurial demandimport of early Mercurial loads an imported module immediately, if a module is imported absolutely by "from a import b" style. Recent perf.py satisfies this condition, because it does: - have "from __future__ import absolute_import" line - use "from a import b" style for modules in "mercurial" package Before this patch, importing modules below prevents perf.py from being loaded by earlier Mercurial, because these aren't available in such Mercurial, even though there are some code paths for Mercurial earlier than 1.9. - branchmap 2.5 (or bcee63733aad) - repoview 2.5 (or 3a6ddacb7198) - obsolete 2.3 (or ad0d6c2b3279) - scmutil 1.9 (or 8b252e826c68) For example, setting "_prereadsize" attribute in perfindex() and perfnodelookup() is effective only with Mercurial earlier than 1.8 (or 61c9bc3da402). After this patch, "mercurial.error" is the only blocker in "from mercurial import" statement for loading perf.py with Mercurial earlier than 1.2. This patch ignores it, because just importing it separately isn't enough.

Gregory Szorc - - Load All Authors

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      # pushkey.py - dispatching for pushing and pulling keys

      #

      # Copyright 2010 Matt Mackall <mpm@selenic.com>

      #

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

      # GNU General Public License version 2 or any later version.

      from __future__ import absolute_import

      from . import (

          bookmarks,

          encoding,

          obsolete,

          phases,

      )

      def _nslist(repo):

          n = {}

          for k in _namespaces:

              n[k] = ""

          if not obsolete.isenabled(repo, obsolete.exchangeopt):

              n.pop('obsolete')

          return n

      _namespaces = {"namespaces": (lambda *x: False, _nslist),

                     "bookmarks": (bookmarks.pushbookmark, bookmarks.listbookmarks),

                     "phases": (phases.pushphase, phases.listphases),

                     "obsolete": (obsolete.pushmarker, obsolete.listmarkers),

                    }

      def register(namespace, pushkey, listkeys):

          _namespaces[namespace] = (pushkey, listkeys)

      def _get(namespace):

          return _namespaces.get(namespace, (lambda *x: False, lambda *x: {}))

      def push(repo, namespace, key, old, new):

          '''should succeed iff value was old'''

          pk = _get(namespace)[0]

          return pk(repo, key, old, new)

      def list(repo, namespace):

          '''return a dict'''

          lk = _get(namespace)[1]

          return lk(repo)

      encode = encoding.fromlocal

      decode = encoding.tolocal

      def encodekeys(keys):

          """encode the content of a pushkey namespace for exchange over the wire"""

          return '\n'.join(['%s\t%s' % (encode(k), encode(v)) for k, v in keys])

      def decodekeys(data):

          """decode the content of a pushkey namespace from exchange over the wire"""

          result = {}

          for l in data.splitlines():

              k, v = l.split('\t')

              result[decode(k)] = decode(v)

          return result

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				# pushkey.py - dispatching for pushing and pulling keys
				#
				# Copyright 2010 Matt Mackall <mpm@selenic.com>
				#
				# This software may be used and distributed according to the terms of the
				# GNU General Public License version 2 or any later version.

				from __future__ import absolute_import

				from . import (
				bookmarks,
				encoding,
				obsolete,
				phases,
				)

				def _nslist(repo):
				n = {}
				for k in _namespaces:
				n[k] = ""
				if not obsolete.isenabled(repo, obsolete.exchangeopt):
				n.pop('obsolete')
				return n

				_namespaces = {"namespaces": (lambda *x: False, _nslist),
				"bookmarks": (bookmarks.pushbookmark, bookmarks.listbookmarks),
				"phases": (phases.pushphase, phases.listphases),
				"obsolete": (obsolete.pushmarker, obsolete.listmarkers),
				}

				def register(namespace, pushkey, listkeys):
				_namespaces[namespace] = (pushkey, listkeys)

				def _get(namespace):
				return _namespaces.get(namespace, (lambda x: False, lambda x: {}))

				def push(repo, namespace, key, old, new):
				'''should succeed iff value was old'''
				pk = _get(namespace)[0]
				return pk(repo, key, old, new)

				def list(repo, namespace):
				'''return a dict'''
				lk = _get(namespace)[1]
				return lk(repo)

				encode = encoding.fromlocal

				decode = encoding.tolocal

				def encodekeys(keys):
				"""encode the content of a pushkey namespace for exchange over the wire"""
				return '\n'.join(['%s\t%s' % (encode(k), encode(v)) for k, v in keys])

				def decodekeys(data):
				"""decode the content of a pushkey namespace from exchange over the wire"""
				result = {}
				for l in data.splitlines():
				k, v = l.split('\t')
				result[decode(k)] = decode(v)
				return result