Mercurial > hg
view contrib/genosxversion.py @ 39503:5aef5afa8654
snapshot: refine candidate snapshot base upward
Once we found a suitable snapshot base it is useful to check if it has a
"children" snapshot that would provide a better diff. This is useful when base
not directly related to stored revision are picked. In those case, we "jumped"
to this new chain at an arbitrary point, checking if a higher point is more
appropriate will help to provide better results and increase snapshot reuse.
author | Boris Feld <boris.feld@octobus.net> |
---|---|
date | Fri, 07 Sep 2018 11:17:36 -0400 |
parents | 25880ddf9a86 |
children | 197e7326b8b8 |
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#!/usr/bin/env python2 from __future__ import absolute_import, print_function import argparse import json import os import subprocess import sys # Always load hg libraries from the hg we can find on $PATH. hglib = json.loads(subprocess.check_output( ['hg', 'debuginstall', '-Tjson']))[0]['hgmodules'] sys.path.insert(0, os.path.dirname(hglib)) from mercurial import util ap = argparse.ArgumentParser() ap.add_argument('--paranoid', action='store_true', help=("Be paranoid about how version numbers compare and " "produce something that's more likely to sort " "reasonably.")) ap.add_argument('--selftest', action='store_true', help='Run self-tests.') ap.add_argument('versionfile', help='Path to a valid mercurial __version__.py') def paranoidver(ver): """Given an hg version produce something that distutils can sort. Some Mac package management systems use distutils code in order to figure out upgrades, which makes life difficult. The test case is a reduced version of code in the Munki tool used by some large organizations to centrally manage OS X packages, which is what inspired this kludge. >>> paranoidver('3.4') '3.4.0' >>> paranoidver('3.4.2') '3.4.2' >>> paranoidver('3.0-rc+10') '2.9.9999-rc+10' >>> paranoidver('4.2+483-5d44d7d4076e') '4.2.0+483-5d44d7d4076e' >>> paranoidver('4.2.1+598-48d1e1214d8c') '4.2.1+598-48d1e1214d8c' >>> paranoidver('4.3-rc') '4.2.9999-rc' >>> paranoidver('4.3') '4.3.0' >>> from distutils import version >>> class LossyPaddedVersion(version.LooseVersion): ... '''Subclass version.LooseVersion to compare things like ... "10.6" and "10.6.0" as equal''' ... def __init__(self, s): ... self.parse(s) ... ... def _pad(self, version_list, max_length): ... 'Pad a version list by adding extra 0 components to the end' ... # copy the version_list so we don't modify it ... cmp_list = list(version_list) ... while len(cmp_list) < max_length: ... cmp_list.append(0) ... return cmp_list ... ... def __cmp__(self, other): ... if isinstance(other, str): ... other = MunkiLooseVersion(other) ... max_length = max(len(self.version), len(other.version)) ... self_cmp_version = self._pad(self.version, max_length) ... other_cmp_version = self._pad(other.version, max_length) ... return cmp(self_cmp_version, other_cmp_version) >>> def testver(older, newer): ... o = LossyPaddedVersion(paranoidver(older)) ... n = LossyPaddedVersion(paranoidver(newer)) ... return o < n >>> testver('3.4', '3.5') True >>> testver('3.4.0', '3.5-rc') True >>> testver('3.4-rc', '3.5') True >>> testver('3.4-rc+10-deadbeef', '3.5') True >>> testver('3.4.2', '3.5-rc') True >>> testver('3.4.2', '3.5-rc+10-deadbeef') True >>> testver('4.2+483-5d44d7d4076e', '4.2.1+598-48d1e1214d8c') True >>> testver('4.3-rc', '4.3') True >>> testver('4.3', '4.3-rc') False """ major, minor, micro, extra = util.versiontuple(ver, n=4) if micro is None: micro = 0 if extra: if extra.startswith('rc'): if minor == 0: major -= 1 minor = 9 else: minor -= 1 micro = 9999 extra = '-' + extra else: extra = '+' + extra else: extra = '' return '%d.%d.%d%s' % (major, minor, micro, extra) def main(argv): opts = ap.parse_args(argv[1:]) if opts.selftest: import doctest doctest.testmod() return with open(opts.versionfile) as f: for l in f: if l.startswith('version = b'): # version number is entire line minus the quotes ver = l[len('version = b') + 1:-2] break if opts.paranoid: print(paranoidver(ver)) else: print(ver) if __name__ == '__main__': main(sys.argv)