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

match: add `filepath:` pattern to match an exact filepath relative to the root...

match: add `filepath:` pattern to match an exact filepath relative to the root It's useful in certain automated workflows to make sure we recurse in directories whose name conflicts with files in other revisions. In addition it makes it possible to avoid building a potentially costly regex, improving performance when the set of files to match explicitly is large. The benchmark below are run in the following configuration : # data-env-vars.name = mozilla-central-2018-08-01-zstd-sparse-revlog # benchmark.name = files # benchmark.variants.rev = tip # benchmark.variants.files = all-list-filepath-sorted # bin-env-vars.hg.flavor = no-rust It also includes timings using the re2 engine (through the `google-re2` module) to show how much can be saved by just using a better regexp engine. Pattern time (seconds) time using re2 ----------------------------------------------------------- just "." 0.4 0.4 list of "filepath:…" 1.3 1.3 list of "path:…" 25.7 3.9 list of patterns 29.7 10.4 As you can see, Without re2, using "filepath:" instead of "path:" is a huge win. With re2, it is still about three times faster to not have to build the regex.

Manuel Jacob - - Load All Authors

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      # node.py - basic nodeid manipulation for mercurial

      #

      # Copyright 2005, 2006 Olivia Mackall <olivia@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.

      import binascii

      # This ugly style has a noticeable effect in manifest parsing

      hex = binascii.hexlify

      bin = binascii.unhexlify

      def short(node):

          return hex(node[:6])

      nullrev = -1

      # pseudo identifier for working directory

      # (experimental, so don't add too many dependencies on it)

      wdirrev = 0x7FFFFFFF

      class sha1nodeconstants:

          nodelen = 20

          # In hex, this is '0000000000000000000000000000000000000000'

          nullid = b"\0" * nodelen

          nullhex = hex(nullid)

          # Phony node value to stand-in for new files in some uses of

          # manifests.

          # In hex, this is '2121212121212121212121212121212121212121'

          newnodeid = b'!!!!!!!!!!!!!!!!!!!!'

          # In hex, this is '3030303030303030303030303030306164646564'

          addednodeid = b'000000000000000added'

          # In hex, this is '3030303030303030303030306d6f646966696564'

          modifiednodeid = b'000000000000modified'

          wdirfilenodeids = {newnodeid, addednodeid, modifiednodeid}

          # pseudo identifier for working directory

          # (experimental, so don't add too many dependencies on it)

          # In hex, this is 'ffffffffffffffffffffffffffffffffffffffff'

          wdirid = b"\xff" * nodelen

          wdirhex = hex(wdirid)

      # legacy starting point for porting modules

      nullid = sha1nodeconstants.nullid

      nullhex = sha1nodeconstants.nullhex

      newnodeid = sha1nodeconstants.newnodeid

      addednodeid = sha1nodeconstants.addednodeid

      modifiednodeid = sha1nodeconstants.modifiednodeid

      wdirfilenodeids = sha1nodeconstants.wdirfilenodeids

      wdirid = sha1nodeconstants.wdirid

      wdirhex = sha1nodeconstants.wdirhex

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				# node.py - basic nodeid manipulation for mercurial
				#
				# Copyright 2005, 2006 Olivia Mackall <olivia@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.


				import binascii

				# This ugly style has a noticeable effect in manifest parsing
				hex = binascii.hexlify
				bin = binascii.unhexlify


				def short(node):
				return hex(node[:6])


				nullrev = -1

				# pseudo identifier for working directory
				# (experimental, so don't add too many dependencies on it)
				wdirrev = 0x7FFFFFFF


				class sha1nodeconstants:
				nodelen = 20

				# In hex, this is '0000000000000000000000000000000000000000'
				nullid = b"\0" * nodelen
				nullhex = hex(nullid)

				# Phony node value to stand-in for new files in some uses of
				# manifests.
				# In hex, this is '2121212121212121212121212121212121212121'
				newnodeid = b'!!!!!!!!!!!!!!!!!!!!'
				# In hex, this is '3030303030303030303030303030306164646564'
				addednodeid = b'000000000000000added'
				# In hex, this is '3030303030303030303030306d6f646966696564'
				modifiednodeid = b'000000000000modified'

				wdirfilenodeids = {newnodeid, addednodeid, modifiednodeid}

				# pseudo identifier for working directory
				# (experimental, so don't add too many dependencies on it)
				# In hex, this is 'ffffffffffffffffffffffffffffffffffffffff'
				wdirid = b"\xff" * nodelen
				wdirhex = hex(wdirid)


				# legacy starting point for porting modules
				nullid = sha1nodeconstants.nullid
				nullhex = sha1nodeconstants.nullhex
				newnodeid = sha1nodeconstants.newnodeid
				addednodeid = sha1nodeconstants.addednodeid
				modifiednodeid = sha1nodeconstants.modifiednodeid
				wdirfilenodeids = sha1nodeconstants.wdirfilenodeids
				wdirid = sha1nodeconstants.wdirid
				wdirhex = sha1nodeconstants.wdirhex