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# git.py - git support for the convert extension
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#
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# Copyright 2005-2009 Matt Mackall <mpm@selenic.com> and others
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#
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# This software may be used and distributed according to the terms of the
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# GNU General Public License version 2 or any later version.
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from __future__ import absolute_import
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import os
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from mercurial.i18n import _
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from mercurial import (
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config,
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error,
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node as nodemod,
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)
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from . import (
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common,
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)
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class submodule(object):
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def __init__(self, path, node, url):
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self.path = path
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self.node = node
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self.url = url
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def hgsub(self):
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return "%s = [git]%s" % (self.path, self.url)
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def hgsubstate(self):
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return "%s %s" % (self.node, self.path)
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# Keys in extra fields that should not be copied if the user requests.
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bannedextrakeys = {
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# Git commit object built-ins.
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'tree',
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'parent',
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'author',
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'committer',
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# Mercurial built-ins.
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'branch',
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'close',
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}
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class convert_git(common.converter_source, common.commandline):
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# Windows does not support GIT_DIR= construct while other systems
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# cannot remove environment variable. Just assume none have
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# both issues.
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def _gitcmd(self, cmd, *args, **kwargs):
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return cmd('--git-dir=%s' % self.path, *args, **kwargs)
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def gitrun0(self, *args, **kwargs):
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return self._gitcmd(self.run0, *args, **kwargs)
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def gitrun(self, *args, **kwargs):
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return self._gitcmd(self.run, *args, **kwargs)
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def gitrunlines0(self, *args, **kwargs):
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return self._gitcmd(self.runlines0, *args, **kwargs)
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def gitrunlines(self, *args, **kwargs):
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return self._gitcmd(self.runlines, *args, **kwargs)
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def gitpipe(self, *args, **kwargs):
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return self._gitcmd(self._run3, *args, **kwargs)
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def __init__(self, ui, repotype, path, revs=None):
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super(convert_git, self).__init__(ui, repotype, path, revs=revs)
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common.commandline.__init__(self, ui, 'git')
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# Pass an absolute path to git to prevent from ever being interpreted
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# as a URL
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path = os.path.abspath(path)
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if os.path.isdir(path + "/.git"):
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path += "/.git"
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if not os.path.exists(path + "/objects"):
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raise common.NoRepo(_("%s does not look like a Git repository") %
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path)
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# The default value (50) is based on the default for 'git diff'.
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similarity = ui.configint('convert', 'git.similarity')
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if similarity < 0 or similarity > 100:
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raise error.Abort(_('similarity must be between 0 and 100'))
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if similarity > 0:
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self.simopt = ['-C%d%%' % similarity]
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findcopiesharder = ui.configbool('convert', 'git.findcopiesharder')
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if findcopiesharder:
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self.simopt.append('--find-copies-harder')
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renamelimit = ui.configint('convert', 'git.renamelimit')
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self.simopt.append('-l%d' % renamelimit)
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else:
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self.simopt = []
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common.checktool('git', 'git')
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self.path = path
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self.submodules = []
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self.catfilepipe = self.gitpipe('cat-file', '--batch')
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self.copyextrakeys = self.ui.configlist('convert', 'git.extrakeys')
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banned = set(self.copyextrakeys) & bannedextrakeys
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if banned:
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raise error.Abort(_('copying of extra key is forbidden: %s') %
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_(', ').join(sorted(banned)))
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committeractions = self.ui.configlist('convert', 'git.committeractions')
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messagedifferent = None
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messagealways = None
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for a in committeractions:
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if a.startswith(('messagedifferent', 'messagealways')):
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k = a
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v = None
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if '=' in a:
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k, v = a.split('=', 1)
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if k == 'messagedifferent':
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messagedifferent = v or 'committer:'
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elif k == 'messagealways':
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messagealways = v or 'committer:'
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if messagedifferent and messagealways:
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raise error.Abort(_('committeractions cannot define both '
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'messagedifferent and messagealways'))
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dropcommitter = 'dropcommitter' in committeractions
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replaceauthor = 'replaceauthor' in committeractions
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if dropcommitter and replaceauthor:
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raise error.Abort(_('committeractions cannot define both '
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'dropcommitter and replaceauthor'))
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if dropcommitter and messagealways:
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raise error.Abort(_('committeractions cannot define both '
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'dropcommitter and messagealways'))
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if not messagedifferent and not messagealways:
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messagedifferent = 'committer:'
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self.committeractions = {
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'dropcommitter': dropcommitter,
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'replaceauthor': replaceauthor,
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'messagedifferent': messagedifferent,
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'messagealways': messagealways,
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}
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def after(self):
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for f in self.catfilepipe:
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f.close()
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def getheads(self):
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if not self.revs:
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output, status = self.gitrun('rev-parse', '--branches', '--remotes')
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heads = output.splitlines()
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if status:
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raise error.Abort(_('cannot retrieve git heads'))
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else:
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heads = []
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for rev in self.revs:
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rawhead, ret = self.gitrun('rev-parse', '--verify', rev)
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heads.append(rawhead[:-1])
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if ret:
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raise error.Abort(_('cannot retrieve git head "%s"') % rev)
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return heads
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def catfile(self, rev, ftype):
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if rev == nodemod.nullhex:
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raise IOError
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self.catfilepipe[0].write(rev+'\n')
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self.catfilepipe[0].flush()
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info = self.catfilepipe[1].readline().split()
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if info[1] != ftype:
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raise error.Abort(_('cannot read %r object at %s') % (ftype, rev))
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size = int(info[2])
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data = self.catfilepipe[1].read(size)
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if len(data) < size:
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raise error.Abort(_('cannot read %r object at %s: unexpected size')
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% (ftype, rev))
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# read the trailing newline
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self.catfilepipe[1].read(1)
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return data
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def getfile(self, name, rev):
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if rev == nodemod.nullhex:
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return None, None
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if name == '.hgsub':
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data = '\n'.join([m.hgsub() for m in self.submoditer()])
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mode = ''
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elif name == '.hgsubstate':
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data = '\n'.join([m.hgsubstate() for m in self.submoditer()])
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mode = ''
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else:
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data = self.catfile(rev, "blob")
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mode = self.modecache[(name, rev)]
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return data, mode
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def submoditer(self):
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null = nodemod.nullhex
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for m in sorted(self.submodules, key=lambda p: p.path):
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if m.node != null:
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yield m
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def parsegitmodules(self, content):
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"""Parse the formatted .gitmodules file, example file format:
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[submodule "sub"]\n
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\tpath = sub\n
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\turl = git://giturl\n
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"""
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self.submodules = []
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c = config.config()
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# Each item in .gitmodules starts with whitespace that cant be parsed
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c.parse('.gitmodules', '\n'.join(line.strip() for line in
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content.split('\n')))
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for sec in c.sections():
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s = c[sec]
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if 'url' in s and 'path' in s:
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self.submodules.append(submodule(s['path'], '', s['url']))
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def retrievegitmodules(self, version):
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modules, ret = self.gitrun('show', '%s:%s' % (version, '.gitmodules'))
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if ret:
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# This can happen if a file is in the repo that has permissions
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# 160000, but there is no .gitmodules file.
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self.ui.warn(_("warning: cannot read submodules config file in "
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"%s\n") % version)
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return
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try:
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self.parsegitmodules(modules)
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except error.ParseError:
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self.ui.warn(_("warning: unable to parse .gitmodules in %s\n")
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% version)
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return
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for m in self.submodules:
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node, ret = self.gitrun('rev-parse', '%s:%s' % (version, m.path))
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if ret:
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continue
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m.node = node.strip()
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def getchanges(self, version, full):
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if full:
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raise error.Abort(_("convert from git does not support --full"))
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self.modecache = {}
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cmd = ['diff-tree','-z', '--root', '-m', '-r'] + self.simopt + [version]
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output, status = self.gitrun(*cmd)
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if status:
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raise error.Abort(_('cannot read changes in %s') % version)
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changes = []
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copies = {}
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seen = set()
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entry = None
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subexists = [False]
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subdeleted = [False]
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difftree = output.split('\x00')
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lcount = len(difftree)
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i = 0
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skipsubmodules = self.ui.configbool('convert', 'git.skipsubmodules')
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def add(entry, f, isdest):
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seen.add(f)
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h = entry[3]
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p = (entry[1] == "100755")
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s = (entry[1] == "120000")
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renamesource = (not isdest and entry[4][0] == 'R')
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if f == '.gitmodules':
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if skipsubmodules:
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return
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subexists[0] = True
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if entry[4] == 'D' or renamesource:
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subdeleted[0] = True
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changes.append(('.hgsub', nodemod.nullhex))
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else:
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changes.append(('.hgsub', ''))
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elif entry[1] == '160000' or entry[0] == ':160000':
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if not skipsubmodules:
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subexists[0] = True
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else:
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if renamesource:
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h = nodemod.nullhex
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self.modecache[(f, h)] = (p and "x") or (s and "l") or ""
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changes.append((f, h))
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while i < lcount:
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l = difftree[i]
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i += 1
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if not entry:
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if not l.startswith(':'):
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continue
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entry = l.split()
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continue
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f = l
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if entry[4][0] == 'C':
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copysrc = f
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copydest = difftree[i]
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i += 1
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f = copydest
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copies[copydest] = copysrc
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if f not in seen:
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add(entry, f, False)
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# A file can be copied multiple times, or modified and copied
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# simultaneously. So f can be repeated even if fdest isn't.
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if entry[4][0] == 'R':
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# rename: next line is the destination
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fdest = difftree[i]
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i += 1
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if fdest not in seen:
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add(entry, fdest, True)
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# .gitmodules isn't imported at all, so it being copied to
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# and fro doesn't really make sense
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if f != '.gitmodules' and fdest != '.gitmodules':
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copies[fdest] = f
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entry = None
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if subexists[0]:
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if subdeleted[0]:
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changes.append(('.hgsubstate', nodemod.nullhex))
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else:
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self.retrievegitmodules(version)
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changes.append(('.hgsubstate', ''))
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return (changes, copies, set())
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def getcommit(self, version):
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c = self.catfile(version, "commit") # read the commit hash
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end = c.find("\n\n")
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message = c[end + 2:]
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message = self.recode(message)
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l = c[:end].splitlines()
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parents = []
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author = committer = None
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extra = {}
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for e in l[1:]:
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n, v = e.split(" ", 1)
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if n == "author":
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p = v.split()
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tm, tz = p[-2:]
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author = " ".join(p[:-2])
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if author[0] == "<":
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author = author[1:-1]
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author = self.recode(author)
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if n == "committer":
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p = v.split()
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tm, tz = p[-2:]
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committer = " ".join(p[:-2])
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if committer[0] == "<":
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committer = committer[1:-1]
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committer = self.recode(committer)
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if n == "parent":
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parents.append(v)
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if n in self.copyextrakeys:
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extra[n] = v
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if self.committeractions['dropcommitter']:
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committer = None
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elif self.committeractions['replaceauthor']:
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author = committer
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if committer:
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messagealways = self.committeractions['messagealways']
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messagedifferent = self.committeractions['messagedifferent']
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if messagealways:
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message += '\n%s %s\n' % (messagealways, committer)
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elif messagedifferent and author != committer:
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message += '\n%s %s\n' % (messagedifferent, committer)
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tzs, tzh, tzm = tz[-5:-4] + "1", tz[-4:-2], tz[-2:]
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tz = -int(tzs) * (int(tzh) * 3600 + int(tzm))
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date = tm + " " + str(tz)
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saverev = self.ui.configbool('convert', 'git.saverev')
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c = common.commit(parents=parents, date=date, author=author,
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desc=message,
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rev=version,
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extra=extra,
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saverev=saverev)
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return c
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def numcommits(self):
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output, ret = self.gitrunlines('rev-list', '--all')
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if ret:
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raise error.Abort(_('cannot retrieve number of commits in %s') \
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% self.path)
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return len(output)
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def gettags(self):
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tags = {}
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alltags = {}
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output, status = self.gitrunlines('ls-remote', '--tags', self.path)
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if status:
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raise error.Abort(_('cannot read tags from %s') % self.path)
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prefix = 'refs/tags/'
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# Build complete list of tags, both annotated and bare ones
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for line in output:
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line = line.strip()
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if line.startswith("error:") or line.startswith("fatal:"):
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raise error.Abort(_('cannot read tags from %s') % self.path)
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node, tag = line.split(None, 1)
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if not tag.startswith(prefix):
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continue
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alltags[tag[len(prefix):]] = node
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# Filter out tag objects for annotated tag refs
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for tag in alltags:
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if tag.endswith('^{}'):
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tags[tag[:-3]] = alltags[tag]
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else:
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if tag + '^{}' in alltags:
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continue
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else:
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tags[tag] = alltags[tag]
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return tags
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def getchangedfiles(self, version, i):
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changes = []
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if i is None:
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output, status = self.gitrunlines('diff-tree', '--root', '-m',
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'-r', version)
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if status:
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raise error.Abort(_('cannot read changes in %s') % version)
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for l in output:
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if "\t" not in l:
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continue
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m, f = l[:-1].split("\t")
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changes.append(f)
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else:
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output, status = self.gitrunlines('diff-tree', '--name-only',
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|
'--root', '-r', version,
|
|
|
'%s^%s' % (version, i + 1), '--')
|
|
|
if status:
|
|
|
raise error.Abort(_('cannot read changes in %s') % version)
|
|
|
changes = [f.rstrip('\n') for f in output]
|
|
|
|
|
|
return changes
|
|
|
|
|
|
def getbookmarks(self):
|
|
|
bookmarks = {}
|
|
|
|
|
|
# Handle local and remote branches
|
|
|
remoteprefix = self.ui.config('convert', 'git.remoteprefix')
|
|
|
reftypes = [
|
|
|
# (git prefix, hg prefix)
|
|
|
('refs/remotes/origin/', remoteprefix + '/'),
|
|
|
('refs/heads/', '')
|
|
|
]
|
|
|
|
|
|
exclude = {
|
|
|
'refs/remotes/origin/HEAD',
|
|
|
}
|
|
|
|
|
|
try:
|
|
|
output, status = self.gitrunlines('show-ref')
|
|
|
for line in output:
|
|
|
line = line.strip()
|
|
|
rev, name = line.split(None, 1)
|
|
|
# Process each type of branch
|
|
|
for gitprefix, hgprefix in reftypes:
|
|
|
if not name.startswith(gitprefix) or name in exclude:
|
|
|
continue
|
|
|
name = '%s%s' % (hgprefix, name[len(gitprefix):])
|
|
|
bookmarks[name] = rev
|
|
|
except Exception:
|
|
|
pass
|
|
|
|
|
|
return bookmarks
|
|
|
|
|
|
def checkrevformat(self, revstr, mapname='splicemap'):
|
|
|
""" git revision string is a 40 byte hex """
|
|
|
self.checkhexformat(revstr, mapname)
|
|
|
|
