Mercurial > hg
view hgext/convert/git.py @ 46113:59fa3890d40a
node: import symbols explicitly
There is no point in lazy importing mercurial.node, it is used all over
the place anyway. So consistently import the used symbols directly.
Fix one file using symbols indirectly via mercurial.revlog.
Differential Revision: https://phab.mercurial-scm.org/D9480
author | Joerg Sonnenberger <joerg@bec.de> |
---|---|
date | Tue, 01 Dec 2020 21:54:46 +0100 |
parents | 8ff1ecfadcd1 |
children | f7621fa14b84 |
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# git.py - git support for the convert extension # # Copyright 2005-2009 Matt Mackall <mpm@selenic.com> and others # # 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 import os from mercurial.i18n import _ from mercurial.node import nullhex from mercurial import ( config, error, pycompat, ) from . import common class submodule(object): def __init__(self, path, node, url): self.path = path self.node = node self.url = url def hgsub(self): return b"%s = [git]%s" % (self.path, self.url) def hgsubstate(self): return b"%s %s" % (self.node, self.path) # Keys in extra fields that should not be copied if the user requests. bannedextrakeys = { # Git commit object built-ins. b'tree', b'parent', b'author', b'committer', # Mercurial built-ins. b'branch', b'close', } class convert_git(common.converter_source, common.commandline): # Windows does not support GIT_DIR= construct while other systems # cannot remove environment variable. Just assume none have # both issues. def _gitcmd(self, cmd, *args, **kwargs): return cmd(b'--git-dir=%s' % self.path, *args, **kwargs) def gitrun0(self, *args, **kwargs): return self._gitcmd(self.run0, *args, **kwargs) def gitrun(self, *args, **kwargs): return self._gitcmd(self.run, *args, **kwargs) def gitrunlines0(self, *args, **kwargs): return self._gitcmd(self.runlines0, *args, **kwargs) def gitrunlines(self, *args, **kwargs): return self._gitcmd(self.runlines, *args, **kwargs) def gitpipe(self, *args, **kwargs): return self._gitcmd(self._run3, *args, **kwargs) def __init__(self, ui, repotype, path, revs=None): super(convert_git, self).__init__(ui, repotype, path, revs=revs) common.commandline.__init__(self, ui, b'git') # Pass an absolute path to git to prevent from ever being interpreted # as a URL path = os.path.abspath(path) if os.path.isdir(path + b"/.git"): path += b"/.git" if not os.path.exists(path + b"/objects"): raise common.NoRepo( _(b"%s does not look like a Git repository") % path ) # The default value (50) is based on the default for 'git diff'. similarity = ui.configint(b'convert', b'git.similarity') if similarity < 0 or similarity > 100: raise error.Abort(_(b'similarity must be between 0 and 100')) if similarity > 0: self.simopt = [b'-C%d%%' % similarity] findcopiesharder = ui.configbool( b'convert', b'git.findcopiesharder' ) if findcopiesharder: self.simopt.append(b'--find-copies-harder') renamelimit = ui.configint(b'convert', b'git.renamelimit') self.simopt.append(b'-l%d' % renamelimit) else: self.simopt = [] common.checktool(b'git', b'git') self.path = path self.submodules = [] self.catfilepipe = self.gitpipe(b'cat-file', b'--batch') self.copyextrakeys = self.ui.configlist(b'convert', b'git.extrakeys') banned = set(self.copyextrakeys) & bannedextrakeys if banned: raise error.Abort( _(b'copying of extra key is forbidden: %s') % _(b', ').join(sorted(banned)) ) committeractions = self.ui.configlist( b'convert', b'git.committeractions' ) messagedifferent = None messagealways = None for a in committeractions: if a.startswith((b'messagedifferent', b'messagealways')): k = a v = None if b'=' in a: k, v = a.split(b'=', 1) if k == b'messagedifferent': messagedifferent = v or b'committer:' elif k == b'messagealways': messagealways = v or b'committer:' if messagedifferent and messagealways: raise error.Abort( _( b'committeractions cannot define both ' b'messagedifferent and messagealways' ) ) dropcommitter = b'dropcommitter' in committeractions replaceauthor = b'replaceauthor' in committeractions if dropcommitter and replaceauthor: raise error.Abort( _( b'committeractions cannot define both ' b'dropcommitter and replaceauthor' ) ) if dropcommitter and messagealways: raise error.Abort( _( b'committeractions cannot define both ' b'dropcommitter and messagealways' ) ) if not messagedifferent and not messagealways: messagedifferent = b'committer:' self.committeractions = { b'dropcommitter': dropcommitter, b'replaceauthor': replaceauthor, b'messagedifferent': messagedifferent, b'messagealways': messagealways, } def after(self): for f in self.catfilepipe: f.close() def getheads(self): if not self.revs: output, status = self.gitrun( b'rev-parse', b'--branches', b'--remotes' ) heads = output.splitlines() if status: raise error.Abort(_(b'cannot retrieve git heads')) else: heads = [] for rev in self.revs: rawhead, ret = self.gitrun(b'rev-parse', b'--verify', rev) heads.append(rawhead[:-1]) if ret: raise error.Abort(_(b'cannot retrieve git head "%s"') % rev) return heads def catfile(self, rev, ftype): if rev == nullhex: raise IOError self.catfilepipe[0].write(rev + b'\n') self.catfilepipe[0].flush() info = self.catfilepipe[1].readline().split() if info[1] != ftype: raise error.Abort( _(b'cannot read %r object at %s') % (pycompat.bytestr(ftype), rev) ) size = int(info[2]) data = self.catfilepipe[1].read(size) if len(data) < size: raise error.Abort( _(b'cannot read %r object at %s: unexpected size') % (ftype, rev) ) # read the trailing newline self.catfilepipe[1].read(1) return data def getfile(self, name, rev): if rev == nullhex: return None, None if name == b'.hgsub': data = b'\n'.join([m.hgsub() for m in self.submoditer()]) mode = b'' elif name == b'.hgsubstate': data = b'\n'.join([m.hgsubstate() for m in self.submoditer()]) mode = b'' else: data = self.catfile(rev, b"blob") mode = self.modecache[(name, rev)] return data, mode def submoditer(self): null = nullhex for m in sorted(self.submodules, key=lambda p: p.path): if m.node != null: yield m def parsegitmodules(self, content): """Parse the formatted .gitmodules file, example file format: [submodule "sub"]\n \tpath = sub\n \turl = git://giturl\n """ self.submodules = [] c = config.config() # Each item in .gitmodules starts with whitespace that cant be parsed c.parse( b'.gitmodules', b'\n'.join(line.strip() for line in content.split(b'\n')), ) for sec in c.sections(): s = c[sec] if b'url' in s and b'path' in s: self.submodules.append(submodule(s[b'path'], b'', s[b'url'])) def retrievegitmodules(self, version): modules, ret = self.gitrun( b'show', b'%s:%s' % (version, b'.gitmodules') ) if ret: # This can happen if a file is in the repo that has permissions # 160000, but there is no .gitmodules file. self.ui.warn( _(b"warning: cannot read submodules config file in %s\n") % version ) return try: self.parsegitmodules(modules) except error.ParseError: self.ui.warn( _(b"warning: unable to parse .gitmodules in %s\n") % version ) return for m in self.submodules: node, ret = self.gitrun(b'rev-parse', b'%s:%s' % (version, m.path)) if ret: continue m.node = node.strip() def getchanges(self, version, full): if full: raise error.Abort(_(b"convert from git does not support --full")) self.modecache = {} cmd = ( [b'diff-tree', b'-z', b'--root', b'-m', b'-r'] + self.simopt + [version] ) output, status = self.gitrun(*cmd) if status: raise error.Abort(_(b'cannot read changes in %s') % version) changes = [] copies = {} seen = set() entry = None subexists = [False] subdeleted = [False] difftree = output.split(b'\x00') lcount = len(difftree) i = 0 skipsubmodules = self.ui.configbool(b'convert', b'git.skipsubmodules') def add(entry, f, isdest): seen.add(f) h = entry[3] p = entry[1] == b"100755" s = entry[1] == b"120000" renamesource = not isdest and entry[4][0] == b'R' if f == b'.gitmodules': if skipsubmodules: return subexists[0] = True if entry[4] == b'D' or renamesource: subdeleted[0] = True changes.append((b'.hgsub', nullhex)) else: changes.append((b'.hgsub', b'')) elif entry[1] == b'160000' or entry[0] == b':160000': if not skipsubmodules: subexists[0] = True else: if renamesource: h = nullhex self.modecache[(f, h)] = (p and b"x") or (s and b"l") or b"" changes.append((f, h)) while i < lcount: l = difftree[i] i += 1 if not entry: if not l.startswith(b':'): continue entry = tuple(pycompat.bytestr(p) for p in l.split()) continue f = l if entry[4][0] == b'C': copysrc = f copydest = difftree[i] i += 1 f = copydest copies[copydest] = copysrc if f not in seen: add(entry, f, False) # A file can be copied multiple times, or modified and copied # simultaneously. So f can be repeated even if fdest isn't. if entry[4][0] == b'R': # rename: next line is the destination fdest = difftree[i] i += 1 if fdest not in seen: add(entry, fdest, True) # .gitmodules isn't imported at all, so it being copied to # and fro doesn't really make sense if f != b'.gitmodules' and fdest != b'.gitmodules': copies[fdest] = f entry = None if subexists[0]: if subdeleted[0]: changes.append((b'.hgsubstate', nullhex)) else: self.retrievegitmodules(version) changes.append((b'.hgsubstate', b'')) return (changes, copies, set()) def getcommit(self, version): c = self.catfile(version, b"commit") # read the commit hash end = c.find(b"\n\n") message = c[end + 2 :] message = self.recode(message) l = c[:end].splitlines() parents = [] author = committer = None extra = {} for e in l[1:]: n, v = e.split(b" ", 1) if n == b"author": p = v.split() tm, tz = p[-2:] author = b" ".join(p[:-2]) if author[0] == b"<": author = author[1:-1] author = self.recode(author) if n == b"committer": p = v.split() tm, tz = p[-2:] committer = b" ".join(p[:-2]) if committer[0] == b"<": committer = committer[1:-1] committer = self.recode(committer) if n == b"parent": parents.append(v) if n in self.copyextrakeys: extra[n] = v if self.committeractions[b'dropcommitter']: committer = None elif self.committeractions[b'replaceauthor']: author = committer if committer: messagealways = self.committeractions[b'messagealways'] messagedifferent = self.committeractions[b'messagedifferent'] if messagealways: message += b'\n%s %s\n' % (messagealways, committer) elif messagedifferent and author != committer: message += b'\n%s %s\n' % (messagedifferent, committer) tzs, tzh, tzm = tz[-5:-4] + b"1", tz[-4:-2], tz[-2:] tz = -int(tzs) * (int(tzh) * 3600 + int(tzm)) date = tm + b" " + (b"%d" % tz) saverev = self.ui.configbool(b'convert', b'git.saverev') c = common.commit( parents=parents, date=date, author=author, desc=message, rev=version, extra=extra, saverev=saverev, ) return c def numcommits(self): output, ret = self.gitrunlines(b'rev-list', b'--all') if ret: raise error.Abort( _(b'cannot retrieve number of commits in %s') % self.path ) return len(output) def gettags(self): tags = {} alltags = {} output, status = self.gitrunlines(b'ls-remote', b'--tags', self.path) if status: raise error.Abort(_(b'cannot read tags from %s') % self.path) prefix = b'refs/tags/' # Build complete list of tags, both annotated and bare ones for line in output: line = line.strip() if line.startswith(b"error:") or line.startswith(b"fatal:"): raise error.Abort(_(b'cannot read tags from %s') % self.path) node, tag = line.split(None, 1) if not tag.startswith(prefix): continue alltags[tag[len(prefix) :]] = node # Filter out tag objects for annotated tag refs for tag in alltags: if tag.endswith(b'^{}'): tags[tag[:-3]] = alltags[tag] else: if tag + b'^{}' in alltags: continue else: tags[tag] = alltags[tag] return tags def getchangedfiles(self, version, i): changes = [] if i is None: output, status = self.gitrunlines( b'diff-tree', b'--root', b'-m', b'-r', version ) if status: raise error.Abort(_(b'cannot read changes in %s') % version) for l in output: if b"\t" not in l: continue m, f = l[:-1].split(b"\t") changes.append(f) else: output, status = self.gitrunlines( b'diff-tree', b'--name-only', b'--root', b'-r', version, b'%s^%d' % (version, i + 1), b'--', ) if status: raise error.Abort(_(b'cannot read changes in %s') % version) changes = [f.rstrip(b'\n') for f in output] return changes def getbookmarks(self): bookmarks = {} # Handle local and remote branches remoteprefix = self.ui.config(b'convert', b'git.remoteprefix') reftypes = [ # (git prefix, hg prefix) (b'refs/remotes/origin/', remoteprefix + b'/'), (b'refs/heads/', b''), ] exclude = { b'refs/remotes/origin/HEAD', } try: output, status = self.gitrunlines(b'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 = b'%s%s' % (hgprefix, name[len(gitprefix) :]) bookmarks[name] = rev except Exception: pass return bookmarks def checkrevformat(self, revstr, mapname=b'splicemap'): """ git revision string is a 40 byte hex """ self.checkhexformat(revstr, mapname)