upstream/mercurial-mirror Files · mercurial/cffi/mpatch.py

snapshot: consider unrelated snapshots at a similar level first...

snapshot: consider unrelated snapshots at a similar level first This new step is inserted before considering using a level-N snapshot as a base for a level-N+1 snapshot. We first check if existing level-N+1 snapshots using the same base would be a suitable base for a level-N+2 snapshot. This increases snapshot reuse and limits the risk of snapshot explosion in very branchy repositories. Using a "deeper" snapshot as the base also results in a smaller snapshot since it builds a level-N+2 intermediate snapshot instead of an N+1 one. This logic is similar for the one we added in a previous commit. In that previous commit is only applied to level-0 "siblings". We can see this effect in the test repository. Snapshots moved from lower levels to higher levels.

Kevin Bullock - - Load All Authors

File last commit:

r33573:857876eb 4.3-rc stable


                r39531:6a538427

default

Download file

             mpatch.py
        
                    48 lines
            
             | 1.4 KiB
            
                | text/x-python
            
             |
                PythonLexer
            
             / mercurial / cffi / mpatch.py
          
                    History
                
                 |
                  Source
                 | Raw
                 |Copy content
                 |Copy permalink

        Yuya Nishihara
    
cffi: split modules from pure...

              r32512
            
      # mpatch.py - CFFI implementation of mpatch.c

      #

      # Copyright 2016 Maciej Fijalkowski <fijall@gmail.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 ..pure.mpatch import *

      from ..pure.mpatch import mpatchError  # silence pyflakes

      from . import _mpatch

      ffi = _mpatch.ffi

      lib = _mpatch.lib

        Yuya Nishihara
    
cffi: remove superfluous "if True" blocks

              r32513
            
      @ffi.def_extern()

      def cffi_get_next_item(arg, pos):

          all, bins = ffi.from_handle(arg)

          container = ffi.new("struct mpatch_flist*[1]")

          to_pass = ffi.new("char[]", str(bins[pos]))

          all.append(to_pass)

          r = lib.mpatch_decode(to_pass, len(to_pass) - 1, container)

          if r < 0:

              return ffi.NULL

          return container[0]

        Yuya Nishihara
    
cffi: split modules from pure...

              r32512
            
        Yuya Nishihara
    
cffi: remove superfluous "if True" blocks

              r32513
            
      def patches(text, bins):

          lgt = len(bins)

          all = []

          if not lgt:

              return text

          arg = (all, bins)

          patch = lib.mpatch_fold(ffi.new_handle(arg),

                                  lib.cffi_get_next_item, 0, lgt)

          if not patch:

              raise mpatchError("cannot decode chunk")

          outlen = lib.mpatch_calcsize(len(text), patch)

          if outlen < 0:

              lib.mpatch_lfree(patch)

              raise mpatchError("inconsistency detected")

          buf = ffi.new("char[]", outlen)

          if lib.mpatch_apply(buf, text, len(text), patch) < 0:

              lib.mpatch_lfree(patch)

              raise mpatchError("error applying patches")

          res = ffi.buffer(buf, outlen)[:]

          lib.mpatch_lfree(patch)

          return res

	Site-wide shortcuts
/	Use quick search box
g h	Goto home page
g g	Goto my private gists page
g G	Goto my public gists page
g 0-9	Goto bookmarked items from 0-9
n r	New repository page
n g	New gist page

	Repositories
g s	Goto summary page
g c	Goto changelog page
g f	Goto files page
g F	Goto files page with file search activated
g p	Goto pull requests page
g o	Goto repository settings
g O	Goto repository access permissions settings
t s	Toggle sidebar on some pages

Yuya Nishihara cffi: split modules from pure...	r32512	# mpatch.py - CFFI implementation of mpatch.c
		#
		# Copyright 2016 Maciej Fijalkowski <fijall@gmail.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 ..pure.mpatch import *
		from ..pure.mpatch import mpatchError # silence pyflakes
		from . import _mpatch

		ffi = _mpatch.ffi
		lib = _mpatch.lib

Yuya Nishihara cffi: remove superfluous "if True" blocks	r32513	@ffi.def_extern()
		def cffi_get_next_item(arg, pos):
		all, bins = ffi.from_handle(arg)
		container = ffi.new("struct mpatch_flist*[1]")
		to_pass = ffi.new("char[]", str(bins[pos]))
		all.append(to_pass)
		r = lib.mpatch_decode(to_pass, len(to_pass) - 1, container)
		if r < 0:
		return ffi.NULL
		return container[0]
Yuya Nishihara cffi: split modules from pure...	r32512
Yuya Nishihara cffi: remove superfluous "if True" blocks	r32513	def patches(text, bins):
		lgt = len(bins)
		all = []
		if not lgt:
		return text
		arg = (all, bins)
		patch = lib.mpatch_fold(ffi.new_handle(arg),
		lib.cffi_get_next_item, 0, lgt)
		if not patch:
		raise mpatchError("cannot decode chunk")
		outlen = lib.mpatch_calcsize(len(text), patch)
		if outlen < 0:
		lib.mpatch_lfree(patch)
		raise mpatchError("inconsistency detected")
		buf = ffi.new("char[]", outlen)
		if lib.mpatch_apply(buf, text, len(text), patch) < 0:
		lib.mpatch_lfree(patch)
		raise mpatchError("error applying patches")
		res = ffi.buffer(buf, outlen)[:]
		lib.mpatch_lfree(patch)
		return res