Mercurial > hg
view hgext/git/dirstate.py @ 47012:d55b71393907
node: replace nullid and friends with nodeconstants class
The introduction of 256bit hashes require changes to nullid and other
constant magic values. Start pushing them down from repository and
revlog where sensible.
Differential Revision: https://phab.mercurial-scm.org/D9465
author | Joerg Sonnenberger <joerg@bec.de> |
---|---|
date | Mon, 29 Mar 2021 01:52:06 +0200 |
parents | 59fa3890d40a |
children | 7431f5ab0d2a |
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from __future__ import absolute_import import contextlib import errno import os from mercurial.node import sha1nodeconstants from mercurial import ( error, extensions, match as matchmod, pycompat, scmutil, util, ) from mercurial.interfaces import ( dirstate as intdirstate, util as interfaceutil, ) from . import gitutil pygit2 = gitutil.get_pygit2() def readpatternfile(orig, filepath, warn, sourceinfo=False): if not (b'info/exclude' in filepath or filepath.endswith(b'.gitignore')): return orig(filepath, warn, sourceinfo=False) result = [] warnings = [] with open(filepath, b'rb') as fp: for l in fp: l = l.strip() if not l or l.startswith(b'#'): continue if l.startswith(b'!'): warnings.append(b'unsupported ignore pattern %s' % l) continue if l.startswith(b'/'): result.append(b'rootglob:' + l[1:]) else: result.append(b'relglob:' + l) return result, warnings extensions.wrapfunction(matchmod, b'readpatternfile', readpatternfile) _STATUS_MAP = {} if pygit2: _STATUS_MAP = { pygit2.GIT_STATUS_CONFLICTED: b'm', pygit2.GIT_STATUS_CURRENT: b'n', pygit2.GIT_STATUS_IGNORED: b'?', pygit2.GIT_STATUS_INDEX_DELETED: b'r', pygit2.GIT_STATUS_INDEX_MODIFIED: b'n', pygit2.GIT_STATUS_INDEX_NEW: b'a', pygit2.GIT_STATUS_INDEX_RENAMED: b'a', pygit2.GIT_STATUS_INDEX_TYPECHANGE: b'n', pygit2.GIT_STATUS_WT_DELETED: b'r', pygit2.GIT_STATUS_WT_MODIFIED: b'n', pygit2.GIT_STATUS_WT_NEW: b'?', pygit2.GIT_STATUS_WT_RENAMED: b'a', pygit2.GIT_STATUS_WT_TYPECHANGE: b'n', pygit2.GIT_STATUS_WT_UNREADABLE: b'?', pygit2.GIT_STATUS_INDEX_MODIFIED | pygit2.GIT_STATUS_WT_MODIFIED: 'm', } @interfaceutil.implementer(intdirstate.idirstate) class gitdirstate(object): def __init__(self, ui, root, gitrepo): self._ui = ui self._root = os.path.dirname(root) self.git = gitrepo self._plchangecallbacks = {} def p1(self): try: return self.git.head.peel().id.raw except pygit2.GitError: # Typically happens when peeling HEAD fails, as in an # empty repository. return sha1nodeconstants.nullid def p2(self): # TODO: MERGE_HEAD? something like that, right? return sha1nodeconstants.nullid def setparents(self, p1, p2=None): if p2 is None: p2 = sha1nodeconstants.nullid assert p2 == sha1nodeconstants.nullid, b'TODO merging support' self.git.head.set_target(gitutil.togitnode(p1)) @util.propertycache def identity(self): return util.filestat.frompath( os.path.join(self._root, b'.git', b'index') ) def branch(self): return b'default' def parents(self): # TODO how on earth do we find p2 if a merge is in flight? return self.p1(), sha1nodeconstants.nullid def __iter__(self): return (pycompat.fsencode(f.path) for f in self.git.index) def items(self): for ie in self.git.index: yield ie.path, None # value should be a dirstatetuple # py2,3 compat forward iteritems = items def __getitem__(self, filename): try: gs = self.git.status_file(filename) except KeyError: return b'?' return _STATUS_MAP[gs] def __contains__(self, filename): try: gs = self.git.status_file(filename) return _STATUS_MAP[gs] != b'?' except KeyError: return False def status(self, match, subrepos, ignored, clean, unknown): listclean = clean # TODO handling of clean files - can we get that from git.status()? modified, added, removed, deleted, unknown, ignored, clean = ( [], [], [], [], [], [], [], ) gstatus = self.git.status() for path, status in gstatus.items(): path = pycompat.fsencode(path) if not match(path): continue if status == pygit2.GIT_STATUS_IGNORED: if path.endswith(b'/'): continue ignored.append(path) elif status in ( pygit2.GIT_STATUS_WT_MODIFIED, pygit2.GIT_STATUS_INDEX_MODIFIED, pygit2.GIT_STATUS_WT_MODIFIED | pygit2.GIT_STATUS_INDEX_MODIFIED, ): modified.append(path) elif status == pygit2.GIT_STATUS_INDEX_NEW: added.append(path) elif status == pygit2.GIT_STATUS_WT_NEW: unknown.append(path) elif status == pygit2.GIT_STATUS_WT_DELETED: deleted.append(path) elif status == pygit2.GIT_STATUS_INDEX_DELETED: removed.append(path) else: raise error.Abort( b'unhandled case: status for %r is %r' % (path, status) ) if listclean: observed = set( modified + added + removed + deleted + unknown + ignored ) index = self.git.index index.read() for entry in index: path = pycompat.fsencode(entry.path) if not match(path): continue if path in observed: continue # already in some other set if path[-1] == b'/': continue # directory clean.append(path) # TODO are we really always sure of status here? return ( False, scmutil.status( modified, added, removed, deleted, unknown, ignored, clean ), ) def flagfunc(self, buildfallback): # TODO we can do better return buildfallback() def getcwd(self): # TODO is this a good way to do this? return os.path.dirname( os.path.dirname(pycompat.fsencode(self.git.path)) ) def normalize(self, path): normed = util.normcase(path) assert normed == path, b"TODO handling of case folding: %s != %s" % ( normed, path, ) return path @property def _checklink(self): return util.checklink(os.path.dirname(pycompat.fsencode(self.git.path))) def copies(self): # TODO support copies? return {} # # TODO what the heck is this _filecache = set() def pendingparentchange(self): # TODO: we need to implement the context manager bits and # correctly stage/revert index edits. return False def write(self, tr): # TODO: call parent change callbacks if tr: def writeinner(category): self.git.index.write() tr.addpending(b'gitdirstate', writeinner) else: self.git.index.write() def pathto(self, f, cwd=None): if cwd is None: cwd = self.getcwd() # TODO core dirstate does something about slashes here assert isinstance(f, bytes) r = util.pathto(self._root, cwd, f) return r def matches(self, match): for x in self.git.index: p = pycompat.fsencode(x.path) if match(p): yield p def normal(self, f, parentfiledata=None): """Mark a file normal and clean.""" # TODO: for now we just let libgit2 re-stat the file. We can # clearly do better. def normallookup(self, f): """Mark a file normal, but possibly dirty.""" # TODO: for now we just let libgit2 re-stat the file. We can # clearly do better. def walk(self, match, subrepos, unknown, ignored, full=True): # TODO: we need to use .status() and not iterate the index, # because the index doesn't force a re-walk and so `hg add` of # a new file without an intervening call to status will # silently do nothing. r = {} cwd = self.getcwd() for path, status in self.git.status().items(): if path.startswith('.hg/'): continue path = pycompat.fsencode(path) if not match(path): continue # TODO construct the stat info from the status object? try: s = os.stat(os.path.join(cwd, path)) except OSError as e: if e.errno != errno.ENOENT: raise continue r[path] = s return r def savebackup(self, tr, backupname): # TODO: figure out a strategy for saving index backups. pass def restorebackup(self, tr, backupname): # TODO: figure out a strategy for saving index backups. pass def add(self, f): index = self.git.index index.read() index.add(pycompat.fsdecode(f)) index.write() def drop(self, f): index = self.git.index index.read() fs = pycompat.fsdecode(f) if fs in index: index.remove(fs) index.write() def remove(self, f): index = self.git.index index.read() index.remove(pycompat.fsdecode(f)) index.write() def copied(self, path): # TODO: track copies? return None def prefetch_parents(self): # TODO pass @contextlib.contextmanager def parentchange(self): # TODO: track this maybe? yield def addparentchangecallback(self, category, callback): # TODO: should this be added to the dirstate interface? self._plchangecallbacks[category] = callback def clearbackup(self, tr, backupname): # TODO pass def setbranch(self, branch): raise error.Abort( b'git repos do not support branches. try using bookmarks' )