Mercurial > hg
view hgext/convert/git.py @ 28816:f4a42bb7c2ec
convert: don't ignore errors from git diff-tree
author | Julien Cristau <julien.cristau@logilab.fr> |
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date | Mon, 04 Apr 2016 15:38:48 +0200 |
parents | 96ed01f6514b |
children | e1d26630443d |
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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 import ( config, error, node as nodemod, ) from mercurial.i18n import _ 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 "%s = [git]%s" % (self.path, self.url) def hgsubstate(self): return "%s %s" % (self.node, self.path) 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('--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 gitread(self, s): fh = self.gitopen(s) data = fh.read() return data, fh.close() def __init__(self, ui, path, revs=None): super(convert_git, self).__init__(ui, path, revs=revs) common.commandline.__init__(self, ui, 'git') if os.path.isdir(path + "/.git"): path += "/.git" if not os.path.exists(path + "/objects"): raise common.NoRepo(_("%s does not look like a Git repository") % path) # The default value (50) is based on the default for 'git diff'. similarity = ui.configint('convert', 'git.similarity', default=50) if similarity < 0 or similarity > 100: raise error.Abort(_('similarity must be between 0 and 100')) if similarity > 0: self.simopt = ['-C%d%%' % similarity] findcopiesharder = ui.configbool('convert', 'git.findcopiesharder', False) if findcopiesharder: self.simopt.append('--find-copies-harder') else: self.simopt = [] common.checktool('git', 'git') self.path = path self.submodules = [] self.catfilepipe = self.gitpipe('cat-file', '--batch') def after(self): for f in self.catfilepipe: f.close() def getheads(self): if not self.revs: output, status = self.gitrun('rev-parse', '--branches', '--remotes') heads = output.splitlines() if status: raise error.Abort(_('cannot retrieve git heads')) else: heads = [] for rev in self.revs: rawhead, ret = self.gitrun('rev-parse', '--verify', rev) heads.append(rawhead[:-1]) if ret: raise error.Abort(_('cannot retrieve git head "%s"') % rev) return heads def catfile(self, rev, type): if rev == nodemod.nullhex: raise IOError self.catfilepipe[0].write(rev+'\n') self.catfilepipe[0].flush() info = self.catfilepipe[1].readline().split() if info[1] != type: raise error.Abort(_('cannot read %r object at %s') % (type, rev)) size = int(info[2]) data = self.catfilepipe[1].read(size) if len(data) < size: raise error.Abort(_('cannot read %r object at %s: unexpected size') % (type, rev)) # read the trailing newline self.catfilepipe[1].read(1) return data def getfile(self, name, rev): if rev == nodemod.nullhex: return None, None if name == '.hgsub': data = '\n'.join([m.hgsub() for m in self.submoditer()]) mode = '' elif name == '.hgsubstate': data = '\n'.join([m.hgsubstate() for m in self.submoditer()]) mode = '' else: data = self.catfile(rev, "blob") mode = self.modecache[(name, rev)] return data, mode def submoditer(self): null = nodemod.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('.gitmodules', '\n'.join(line.strip() for line in content.split('\n'))) for sec in c.sections(): s = c[sec] if 'url' in s and 'path' in s: self.submodules.append(submodule(s['path'], '', s['url'])) def retrievegitmodules(self, version): modules, ret = self.gitrun('show', '%s:%s' % (version, '.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(_("warning: cannot read submodules config file in " "%s\n") % version) return try: self.parsegitmodules(modules) except error.ParseError: self.ui.warn(_("warning: unable to parse .gitmodules in %s\n") % version) return for m in self.submodules: node, ret = self.gitrun('rev-parse', '%s:%s' % (version, m.path)) if ret: continue m.node = node.strip() def getchanges(self, version, full): if full: raise error.Abort(_("convert from git does not support --full")) self.modecache = {} cmd = ['diff-tree','-z', '--root', '-m', '-r'] + self.simopt + [version] output, status = self.gitrun(*cmd) if status: raise error.Abort(_('cannot read changes in %s') % version) changes = [] copies = {} seen = set() entry = None subexists = [False] subdeleted = [False] difftree = output.split('\x00') lcount = len(difftree) i = 0 skipsubmodules = self.ui.configbool('convert', 'git.skipsubmodules', False) def add(entry, f, isdest): seen.add(f) h = entry[3] p = (entry[1] == "100755") s = (entry[1] == "120000") renamesource = (not isdest and entry[4][0] == 'R') if f == '.gitmodules': if skipsubmodules: return subexists[0] = True if entry[4] == 'D' or renamesource: subdeleted[0] = True changes.append(('.hgsub', nodemod.nullhex)) else: changes.append(('.hgsub', '')) elif entry[1] == '160000' or entry[0] == ':160000': if not skipsubmodules: subexists[0] = True else: if renamesource: h = nodemod.nullhex self.modecache[(f, h)] = (p and "x") or (s and "l") or "" changes.append((f, h)) while i < lcount: l = difftree[i] i += 1 if not entry: if not l.startswith(':'): continue entry = l.split() continue f = l if entry[4][0] == '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] == '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 != '.gitmodules' and fdest != '.gitmodules': copies[fdest] = f entry = None if subexists[0]: if subdeleted[0]: changes.append(('.hgsubstate', nodemod.nullhex)) else: self.retrievegitmodules(version) changes.append(('.hgsubstate', '')) return (changes, copies, set()) def getcommit(self, version): c = self.catfile(version, "commit") # read the commit hash end = c.find("\n\n") message = c[end + 2:] message = self.recode(message) l = c[:end].splitlines() parents = [] author = committer = None for e in l[1:]: n, v = e.split(" ", 1) if n == "author": p = v.split() tm, tz = p[-2:] author = " ".join(p[:-2]) if author[0] == "<": author = author[1:-1] author = self.recode(author) if n == "committer": p = v.split() tm, tz = p[-2:] committer = " ".join(p[:-2]) if committer[0] == "<": committer = committer[1:-1] committer = self.recode(committer) if n == "parent": parents.append(v) if committer and committer != author: message += "\ncommitter: %s\n" % committer tzs, tzh, tzm = tz[-5:-4] + "1", tz[-4:-2], tz[-2:] tz = -int(tzs) * (int(tzh) * 3600 + int(tzm)) date = tm + " " + str(tz) c = common.commit(parents=parents, date=date, author=author, desc=message, rev=version) return c def numcommits(self): output, ret = self.gitrunlines('rev-list', '--all') if ret: raise error.Abort(_('cannot retrieve number of commits in %s') \ % self.path) return len(output) def gettags(self): tags = {} alltags = {} output, status = self.gitrunlines('ls-remote', '--tags', self.path) if status: raise error.Abort(_('cannot read tags from %s') % self.path) prefix = 'refs/tags/' # Build complete list of tags, both annotated and bare ones for line in output: line = line.strip() if line.startswith("error:") or line.startswith("fatal:"): raise error.Abort(_('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('^{}'): tags[tag[:-3]] = alltags[tag] else: if tag + '^{}' in alltags: continue else: tags[tag] = alltags[tag] return tags def getchangedfiles(self, version, i): changes = [] if i is None: output, status = self.gitrunlines('diff-tree', '--root', '-m', '-r', version) if status: raise error.Abort(_('cannot read changes in %s') % version) for l in output: if "\t" not in l: continue m, f = l[:-1].split("\t") changes.append(f) else: output, status = self.gitrunlines('diff-tree', '--name-only', '--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', 'remote') reftypes = [ # (git prefix, hg prefix) ('refs/remotes/origin/', remoteprefix + '/'), ('refs/heads/', '') ] exclude = set([ '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)