Mercurial > hg
view mercurial/dirstate.py @ 10712:fbe138da6b38
keyword: 1 variable name for overwriting candidates
author | Christian Ebert <blacktrash@gmx.net> |
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date | Tue, 16 Mar 2010 22:28:23 +0100 |
parents | 41d0ed2c79df |
children | e5aaa4543289 |
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# dirstate.py - working directory tracking for mercurial # # Copyright 2005-2007 Matt Mackall <mpm@selenic.com> # # This software may be used and distributed according to the terms of the # GNU General Public License version 2 or any later version. from node import nullid from i18n import _ import util, ignore, osutil, parsers import struct, os, stat, errno import cStringIO _unknown = ('?', 0, 0, 0) _format = ">cllll" propertycache = util.propertycache def _finddirs(path): pos = path.rfind('/') while pos != -1: yield path[:pos] pos = path.rfind('/', 0, pos) def _incdirs(dirs, path): for base in _finddirs(path): if base in dirs: dirs[base] += 1 return dirs[base] = 1 def _decdirs(dirs, path): for base in _finddirs(path): if dirs[base] > 1: dirs[base] -= 1 return del dirs[base] class dirstate(object): def __init__(self, opener, ui, root): '''Create a new dirstate object. opener is an open()-like callable that can be used to open the dirstate file; root is the root of the directory tracked by the dirstate. ''' self._opener = opener self._root = root self._rootdir = os.path.join(root, '') self._dirty = False self._dirtypl = False self._ui = ui @propertycache def _map(self): '''Return the dirstate contents as a map from filename to (state, mode, size, time).''' self._read() return self._map @propertycache def _copymap(self): self._read() return self._copymap @propertycache def _foldmap(self): f = {} for name in self._map: f[os.path.normcase(name)] = name return f @propertycache def _branch(self): try: return self._opener("branch").read().strip() or "default" except IOError: return "default" @propertycache def _pl(self): try: st = self._opener("dirstate").read(40) l = len(st) if l == 40: return st[:20], st[20:40] elif l > 0 and l < 40: raise util.Abort(_('working directory state appears damaged!')) except IOError, err: if err.errno != errno.ENOENT: raise return [nullid, nullid] @propertycache def _dirs(self): dirs = {} for f, s in self._map.iteritems(): if s[0] != 'r': _incdirs(dirs, f) return dirs @propertycache def _ignore(self): files = [self._join('.hgignore')] for name, path in self._ui.configitems("ui"): if name == 'ignore' or name.startswith('ignore.'): files.append(util.expandpath(path)) return ignore.ignore(self._root, files, self._ui.warn) @propertycache def _slash(self): return self._ui.configbool('ui', 'slash') and os.sep != '/' @propertycache def _checklink(self): return util.checklink(self._root) @propertycache def _checkexec(self): return util.checkexec(self._root) @propertycache def _checkcase(self): return not util.checkcase(self._join('.hg')) def _join(self, f): # much faster than os.path.join() # it's safe because f is always a relative path return self._rootdir + f def flagfunc(self, fallback): if self._checklink: if self._checkexec: def f(x): p = self._join(x) if os.path.islink(p): return 'l' if util.is_exec(p): return 'x' return '' return f def f(x): if os.path.islink(self._join(x)): return 'l' if 'x' in fallback(x): return 'x' return '' return f if self._checkexec: def f(x): if 'l' in fallback(x): return 'l' if util.is_exec(self._join(x)): return 'x' return '' return f return fallback def getcwd(self): cwd = os.getcwd() if cwd == self._root: return '' # self._root ends with a path separator if self._root is '/' or 'C:\' rootsep = self._root if not util.endswithsep(rootsep): rootsep += os.sep if cwd.startswith(rootsep): return cwd[len(rootsep):] else: # we're outside the repo. return an absolute path. return cwd def pathto(self, f, cwd=None): if cwd is None: cwd = self.getcwd() path = util.pathto(self._root, cwd, f) if self._slash: return util.normpath(path) return path def __getitem__(self, key): '''Return the current state of key (a filename) in the dirstate. States are: n normal m needs merging r marked for removal a marked for addition ? not tracked ''' return self._map.get(key, ("?",))[0] def __contains__(self, key): return key in self._map def __iter__(self): for x in sorted(self._map): yield x def parents(self): return self._pl def branch(self): return self._branch def setparents(self, p1, p2=nullid): self._dirty = self._dirtypl = True self._pl = p1, p2 def setbranch(self, branch): if branch in ['tip', '.', 'null']: raise util.Abort(_('the name \'%s\' is reserved') % branch) self._branch = branch self._opener("branch", "w").write(branch + '\n') def _read(self): self._map = {} self._copymap = {} try: st = self._opener("dirstate").read() except IOError, err: if err.errno != errno.ENOENT: raise return if not st: return p = parsers.parse_dirstate(self._map, self._copymap, st) if not self._dirtypl: self._pl = p def invalidate(self): for a in "_map _copymap _foldmap _branch _pl _dirs _ignore".split(): if a in self.__dict__: delattr(self, a) self._dirty = False def copy(self, source, dest): """Mark dest as a copy of source. Unmark dest if source is None.""" if source == dest: return self._dirty = True if source is not None: self._copymap[dest] = source elif dest in self._copymap: del self._copymap[dest] def copied(self, file): return self._copymap.get(file, None) def copies(self): return self._copymap def _droppath(self, f): if self[f] not in "?r" and "_dirs" in self.__dict__: _decdirs(self._dirs, f) def _addpath(self, f, check=False): oldstate = self[f] if check or oldstate == "r": if '\r' in f or '\n' in f: raise util.Abort( _("'\\n' and '\\r' disallowed in filenames: %r") % f) if f in self._dirs: raise util.Abort(_('directory %r already in dirstate') % f) # shadows for d in _finddirs(f): if d in self._dirs: break if d in self._map and self[d] != 'r': raise util.Abort( _('file %r in dirstate clashes with %r') % (d, f)) if oldstate in "?r" and "_dirs" in self.__dict__: _incdirs(self._dirs, f) def normal(self, f): '''Mark a file normal and clean.''' self._dirty = True self._addpath(f) s = os.lstat(self._join(f)) self._map[f] = ('n', s.st_mode, s.st_size, int(s.st_mtime)) if f in self._copymap: del self._copymap[f] def normallookup(self, f): '''Mark a file normal, but possibly dirty.''' if self._pl[1] != nullid and f in self._map: # if there is a merge going on and the file was either # in state 'm' or dirty before being removed, restore that state. entry = self._map[f] if entry[0] == 'r' and entry[2] in (-1, -2): source = self._copymap.get(f) if entry[2] == -1: self.merge(f) elif entry[2] == -2: self.normaldirty(f) if source: self.copy(source, f) return if entry[0] == 'm' or entry[0] == 'n' and entry[2] == -2: return self._dirty = True self._addpath(f) self._map[f] = ('n', 0, -1, -1) if f in self._copymap: del self._copymap[f] def normaldirty(self, f): '''Mark a file normal, but dirty.''' self._dirty = True self._addpath(f) self._map[f] = ('n', 0, -2, -1) if f in self._copymap: del self._copymap[f] def add(self, f): '''Mark a file added.''' self._dirty = True self._addpath(f, True) self._map[f] = ('a', 0, -1, -1) if f in self._copymap: del self._copymap[f] def remove(self, f): '''Mark a file removed.''' self._dirty = True self._droppath(f) size = 0 if self._pl[1] != nullid and f in self._map: entry = self._map[f] if entry[0] == 'm': size = -1 elif entry[0] == 'n' and entry[2] == -2: size = -2 self._map[f] = ('r', 0, size, 0) if size == 0 and f in self._copymap: del self._copymap[f] def merge(self, f): '''Mark a file merged.''' self._dirty = True s = os.lstat(self._join(f)) self._addpath(f) self._map[f] = ('m', s.st_mode, s.st_size, int(s.st_mtime)) if f in self._copymap: del self._copymap[f] def forget(self, f): '''Forget a file.''' self._dirty = True try: self._droppath(f) del self._map[f] except KeyError: self._ui.warn(_("not in dirstate: %s\n") % f) def _normalize(self, path, knownpath): norm_path = os.path.normcase(path) fold_path = self._foldmap.get(norm_path, None) if fold_path is None: if knownpath or not os.path.exists(os.path.join(self._root, path)): fold_path = path else: fold_path = self._foldmap.setdefault(norm_path, util.fspath(path, self._root)) return fold_path def clear(self): self._map = {} if "_dirs" in self.__dict__: delattr(self, "_dirs") self._copymap = {} self._pl = [nullid, nullid] self._dirty = True def rebuild(self, parent, files): self.clear() for f in files: if 'x' in files.flags(f): self._map[f] = ('n', 0777, -1, 0) else: self._map[f] = ('n', 0666, -1, 0) self._pl = (parent, nullid) self._dirty = True def write(self): if not self._dirty: return st = self._opener("dirstate", "w", atomictemp=True) # use the modification time of the newly created temporary file as the # filesystem's notion of 'now' now = int(util.fstat(st).st_mtime) cs = cStringIO.StringIO() copymap = self._copymap pack = struct.pack write = cs.write write("".join(self._pl)) for f, e in self._map.iteritems(): if f in copymap: f = "%s\0%s" % (f, copymap[f]) if e[0] == 'n' and e[3] == now: # The file was last modified "simultaneously" with the current # write to dirstate (i.e. within the same second for file- # systems with a granularity of 1 sec). This commonly happens # for at least a couple of files on 'update'. # The user could change the file without changing its size # within the same second. Invalidate the file's stat data in # dirstate, forcing future 'status' calls to compare the # contents of the file. This prevents mistakenly treating such # files as clean. e = (e[0], 0, -1, -1) # mark entry as 'unset' e = pack(_format, e[0], e[1], e[2], e[3], len(f)) write(e) write(f) st.write(cs.getvalue()) st.rename() self._dirty = self._dirtypl = False def _dirignore(self, f): if f == '.': return False if self._ignore(f): return True for p in _finddirs(f): if self._ignore(p): return True return False def walk(self, match, subrepos, unknown, ignored): ''' Walk recursively through the directory tree, finding all files matched by match. Return a dict mapping filename to stat-like object (either mercurial.osutil.stat instance or return value of os.stat()). ''' def fwarn(f, msg): self._ui.warn('%s: %s\n' % (self.pathto(f), msg)) return False def badtype(mode): kind = _('unknown') if stat.S_ISCHR(mode): kind = _('character device') elif stat.S_ISBLK(mode): kind = _('block device') elif stat.S_ISFIFO(mode): kind = _('fifo') elif stat.S_ISSOCK(mode): kind = _('socket') elif stat.S_ISDIR(mode): kind = _('directory') return _('unsupported file type (type is %s)') % kind ignore = self._ignore dirignore = self._dirignore if ignored: ignore = util.never dirignore = util.never elif not unknown: # if unknown and ignored are False, skip step 2 ignore = util.always dirignore = util.always matchfn = match.matchfn badfn = match.bad dmap = self._map normpath = util.normpath listdir = osutil.listdir lstat = os.lstat getkind = stat.S_IFMT dirkind = stat.S_IFDIR regkind = stat.S_IFREG lnkkind = stat.S_IFLNK join = self._join work = [] wadd = work.append if self._checkcase: normalize = self._normalize else: normalize = lambda x, y: x exact = skipstep3 = False if matchfn == match.exact: # match.exact exact = True dirignore = util.always # skip step 2 elif match.files() and not match.anypats(): # match.match, no patterns skipstep3 = True files = set(match.files()) if not files or '.' in files: files = [''] results = dict.fromkeys(subrepos) results['.hg'] = None # step 1: find all explicit files for ff in sorted(files): nf = normalize(normpath(ff), False) if nf in results: continue try: st = lstat(join(nf)) kind = getkind(st.st_mode) if kind == dirkind: skipstep3 = False if nf in dmap: #file deleted on disk but still in dirstate results[nf] = None match.dir(nf) if not dirignore(nf): wadd(nf) elif kind == regkind or kind == lnkkind: results[nf] = st else: badfn(ff, badtype(kind)) if nf in dmap: results[nf] = None except OSError, inst: if nf in dmap: # does it exactly match a file? results[nf] = None else: # does it match a directory? prefix = nf + "/" for fn in dmap: if fn.startswith(prefix): match.dir(nf) skipstep3 = False break else: badfn(ff, inst.strerror) # step 2: visit subdirectories while work: nd = work.pop() skip = None if nd == '.': nd = '' else: skip = '.hg' try: entries = listdir(join(nd), stat=True, skip=skip) except OSError, inst: if inst.errno == errno.EACCES: fwarn(nd, inst.strerror) continue raise for f, kind, st in entries: nf = normalize(nd and (nd + "/" + f) or f, True) if nf not in results: if kind == dirkind: if not ignore(nf): match.dir(nf) wadd(nf) if nf in dmap and matchfn(nf): results[nf] = None elif kind == regkind or kind == lnkkind: if nf in dmap: if matchfn(nf): results[nf] = st elif matchfn(nf) and not ignore(nf): results[nf] = st elif nf in dmap and matchfn(nf): results[nf] = None # step 3: report unseen items in the dmap hash if not skipstep3 and not exact: visit = sorted([f for f in dmap if f not in results and matchfn(f)]) for nf, st in zip(visit, util.statfiles([join(i) for i in visit])): if not st is None and not getkind(st.st_mode) in (regkind, lnkkind): st = None results[nf] = st for s in subrepos: del results[s] del results['.hg'] return results def status(self, match, subrepos, ignored, clean, unknown): '''Determine the status of the working copy relative to the dirstate and return a tuple of lists (unsure, modified, added, removed, deleted, unknown, ignored, clean), where: unsure: files that might have been modified since the dirstate was written, but need to be read to be sure (size is the same but mtime differs) modified: files that have definitely been modified since the dirstate was written (different size or mode) added: files that have been explicitly added with hg add removed: files that have been explicitly removed with hg remove deleted: files that have been deleted through other means ("missing") unknown: files not in the dirstate that are not ignored ignored: files not in the dirstate that are ignored (by _dirignore()) clean: files that have definitely not been modified since the dirstate was written ''' listignored, listclean, listunknown = ignored, clean, unknown lookup, modified, added, unknown, ignored = [], [], [], [], [] removed, deleted, clean = [], [], [] dmap = self._map ladd = lookup.append # aka "unsure" madd = modified.append aadd = added.append uadd = unknown.append iadd = ignored.append radd = removed.append dadd = deleted.append cadd = clean.append for fn, st in self.walk(match, subrepos, listunknown, listignored).iteritems(): if fn not in dmap: if (listignored or match.exact(fn)) and self._dirignore(fn): if listignored: iadd(fn) elif listunknown: uadd(fn) continue state, mode, size, time = dmap[fn] if not st and state in "nma": dadd(fn) elif state == 'n': if (size >= 0 and (size != st.st_size or ((mode ^ st.st_mode) & 0100 and self._checkexec)) or size == -2 or fn in self._copymap): madd(fn) elif time != int(st.st_mtime): ladd(fn) elif listclean: cadd(fn) elif state == 'm': madd(fn) elif state == 'a': aadd(fn) elif state == 'r': radd(fn) return (lookup, modified, added, removed, deleted, unknown, ignored, clean)