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

Rewrite log command. New version is faster and more featureful....

Rewrite log command. New version is faster and more featureful. The original implementation of log walked backwards through history, which had terrible behaviour. It took several minutes to view complete kernel change history on a fast machine, for example. The rewrite uses a windowed approach to walk hunks of history forwards, while still giving results in reverse order. This reduces run time from five minutes to five seconds on my system. In addition, the rewrite uses our normal name handling mechanisms, so you can run a command like "hg log net/ipv4/**.c" and get a useful answer. It optimises for three different cases (no arguments, only files, and anything goes), so it performs well in all circumstances I've tested.

mpm@selenic.com - - Load All Authors

File last commit:

r464:50da4bb9 default


                r1031:503aaf19

default

Download file

             version.py
        
                    67 lines
            
             | 1.9 KiB
            
                | text/x-python
            
             |
                PythonLexer
            
             / mercurial / version.py
          
                    History
                
                 |
                  Annotation
                 | Raw
                 |Copy content
                 |Copy permalink

      # Copyright (C) 2005 by Intevation GmbH

      # Author(s):

      # Thomas Arendsen Hein <thomas@intevation.de>

      #

      # This program is free software under the GNU GPL (>=v2)

      # Read the file COPYING coming with the software for details.

      """

      Mercurial version

      """

      import os

      import os.path

      import re

      import time

      import util

      unknown_version = 'unknown'

      remembered_version = False

      def get_version():

          """Return version information if available."""

          try:

              from mercurial.__version__ import version

          except ImportError:

              version = unknown_version

          return version

      def write_version(version):

          """Overwrite version file."""

          filename = os.path.join(os.path.dirname(__file__), '__version__.py')

          f = open(filename, 'w')

          f.write("# This file is auto-generated.\n")

          f.write("version = %r\n" % version)

          f.close()

      def remember_version(version=None):

          """Store version information."""

          global remembered_version

          if not version and os.path.isdir(".hg"):

              f = os.popen("hg identify 2> %s" % util.nulldev)  # use real hg installation

              ident = f.read()[:-1]

              if not f.close() and ident:

                  ids = ident.split(' ', 1)

                  version = ids.pop(0)

                  if version[-1] == '+':

                      version = version[:-1]

                      modified = True

                  else:

                      modified = False

                  if version.isalnum() and ids:

                      for tag in ids[0].split('/'):

                          # is a tag is suitable as a version number?

                          if re.match(r'^(\d+\.)+[\w.-]+$', tag):

                              version = tag

                              break

                  if modified:

                      version += time.strftime('+%Y%m%d')

          if version:

              remembered_version = True

              write_version(version)

      def forget_version():

          """Remove version information."""

          if remembered_version:

              write_version(unknown_version)

	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

				# Copyright (C) 2005 by Intevation GmbH
				# Author(s):
				# Thomas Arendsen Hein <thomas@intevation.de>
				#
				# This program is free software under the GNU GPL (>=v2)
				# Read the file COPYING coming with the software for details.

				"""
				Mercurial version
				"""

				import os
				import os.path
				import re
				import time
				import util

				unknown_version = 'unknown'
				remembered_version = False

				def get_version():
				"""Return version information if available."""
				try:
				from mercurial.__version__ import version
				except ImportError:
				version = unknown_version
				return version

				def write_version(version):
				"""Overwrite version file."""
				filename = os.path.join(os.path.dirname(__file__), '__version__.py')
				f = open(filename, 'w')
				f.write("# This file is auto-generated.\n")
				f.write("version = %r\n" % version)
				f.close()

				def remember_version(version=None):
				"""Store version information."""
				global remembered_version
				if not version and os.path.isdir(".hg"):
				f = os.popen("hg identify 2> %s" % util.nulldev) # use real hg installation
				ident = f.read()[:-1]
				if not f.close() and ident:
				ids = ident.split(' ', 1)
				version = ids.pop(0)
				if version[-1] == '+':
				version = version[:-1]
				modified = True
				else:
				modified = False
				if version.isalnum() and ids:
				for tag in ids[0].split('/'):
				# is a tag is suitable as a version number?
				if re.match(r'^(\d+\.)+[\w.-]+$', tag):
				version = tag
				break
				if modified:
				version += time.strftime('+%Y%m%d')
				if version:
				remembered_version = True
				write_version(version)

				def forget_version():
				"""Remove version information."""
				if remembered_version:
				write_version(unknown_version)