""" dirstate.py - working directory tracking for mercurial Copyright 2005 Matt Mackall This software may be used and distributed according to the terms of the GNU General Public License, incorporated herein by reference. """ import struct, os from node import * from demandload import * demandload(globals(), "time bisect stat util re") class dirstate: def __init__(self, opener, ui, root): self.opener = opener self.root = root self.dirty = 0 self.ui = ui self.map = None self.pl = None self.copies = {} self.ignorefunc = None self.blockignore = False def wjoin(self, f): return os.path.join(self.root, f) def getcwd(self): cwd = os.getcwd() if cwd == self.root: return '' return cwd[len(self.root) + 1:] def hgignore(self): '''return the contents of .hgignore as a list of patterns. trailing white space is dropped. the escape character is backslash. comments start with #. empty lines are skipped. lines can be of the following formats: syntax: regexp # defaults following lines to non-rooted regexps syntax: glob # defaults following lines to non-rooted globs re:pattern # non-rooted regular expression glob:pattern # non-rooted glob pattern # pattern of the current default type''' syntaxes = {'re': 'relre:', 'regexp': 'relre:', 'glob': 'relglob:'} def parselines(fp): for line in fp: escape = False for i in xrange(len(line)): if escape: escape = False elif line[i] == '\\': escape = True elif line[i] == '#': break line = line[:i].rstrip() if line: yield line pats = [] try: fp = open(self.wjoin('.hgignore')) syntax = 'relre:' for line in parselines(fp): if line.startswith('syntax:'): s = line[7:].strip() try: syntax = syntaxes[s] except KeyError: self.ui.warn("ignoring invalid syntax '%s'\n" % s) continue pat = syntax + line for s in syntaxes.values(): if line.startswith(s): pat = line break pats.append(pat) except IOError: pass return pats def ignore(self, fn): '''default match function used by dirstate and localrepository. this honours the .hgignore file, and nothing more.''' if self.blockignore: return False if not self.ignorefunc: ignore = self.hgignore() if ignore: files, self.ignorefunc, anypats = util.matcher(self.root, inc=ignore) else: self.ignorefunc = util.never return self.ignorefunc(fn) def __del__(self): if self.dirty: self.write() def __getitem__(self, key): try: return self.map[key] except TypeError: self.read() return self[key] def __contains__(self, key): if not self.map: self.read() return key in self.map def parents(self): if not self.pl: self.read() return self.pl def markdirty(self): if not self.dirty: self.dirty = 1 def setparents(self, p1, p2=nullid): self.markdirty() self.pl = p1, p2 def state(self, key): try: return self[key][0] except KeyError: return "?" def read(self): if self.map is not None: return self.map self.map = {} self.pl = [nullid, nullid] try: st = self.opener("dirstate").read() if not st: return except: return self.pl = [st[:20], st[20: 40]] pos = 40 while pos < len(st): e = struct.unpack(">cllll", st[pos:pos+17]) l = e[4] pos += 17 f = st[pos:pos + l] if '\0' in f: f, c = f.split('\0') self.copies[f] = c self.map[f] = e[:4] pos += l def copy(self, source, dest): self.read() self.markdirty() self.copies[dest] = source def copied(self, file): return self.copies.get(file, None) def update(self, files, state, **kw): ''' current states: n normal m needs merging r marked for removal a marked for addition''' if not files: return self.read() self.markdirty() for f in files: if state == "r": self.map[f] = ('r', 0, 0, 0) else: s = os.lstat(os.path.join(self.root, f)) st_size = kw.get('st_size', s.st_size) st_mtime = kw.get('st_mtime', s.st_mtime) self.map[f] = (state, s.st_mode, st_size, st_mtime) if self.copies.has_key(f): del self.copies[f] def forget(self, files): if not files: return self.read() self.markdirty() for f in files: try: del self.map[f] except KeyError: self.ui.warn("not in dirstate: %s!\n" % f) pass def clear(self): self.map = {} self.markdirty() def write(self): st = self.opener("dirstate", "w") st.write("".join(self.pl)) for f, e in self.map.items(): c = self.copied(f) if c: f = f + "\0" + c e = struct.pack(">cllll", e[0], e[1], e[2], e[3], len(f)) st.write(e + f) self.dirty = 0 def filterfiles(self, files): ret = {} unknown = [] for x in files: if x is '.': return self.map.copy() if x not in self.map: unknown.append(x) else: ret[x] = self.map[x] if not unknown: return ret b = self.map.keys() b.sort() blen = len(b) for x in unknown: bs = bisect.bisect(b, x) if bs != 0 and b[bs-1] == x: ret[x] = self.map[x] continue while bs < blen: s = b[bs] if len(s) > len(x) and s.startswith(x) and s[len(x)] == '/': ret[s] = self.map[s] else: break bs += 1 return ret def walk(self, files=None, match=util.always, dc=None): self.read() # walk all files by default if not files: files = [self.root] if not dc: dc = self.map.copy() elif not dc: dc = self.filterfiles(files) def statmatch(file, stat): file = util.pconvert(file) if file not in dc and self.ignore(file): return False return match(file) return self.walkhelper(files=files, statmatch=statmatch, dc=dc) # walk recursively through the directory tree, finding all files # matched by the statmatch function # # results are yielded in a tuple (src, filename), where src is one of: # 'f' the file was found in the directory tree # 'm' the file was only in the dirstate and not in the tree # # dc is an optional arg for the current dirstate. dc is not modified # directly by this function, but might be modified by your statmatch call. # def walkhelper(self, files, statmatch, dc): # recursion free walker, faster than os.walk. def findfiles(s): retfiles = [] work = [s] while work: top = work.pop() names = os.listdir(top) names.sort() # nd is the top of the repository dir tree nd = util.normpath(top[len(self.root) + 1:]) if nd == '.': nd = '' for f in names: np = os.path.join(nd, f) if seen(np): continue p = os.path.join(top, f) # don't trip over symlinks st = os.lstat(p) if stat.S_ISDIR(st.st_mode): ds = os.path.join(nd, f +'/') if statmatch(ds, st): work.append(p) else: if statmatch(np, st): yield util.pconvert(np) known = {'.hg': 1} def seen(fn): if fn in known: return True known[fn] = 1 # step one, find all files that match our criteria files.sort() for ff in util.unique(files): f = os.path.join(self.root, ff) try: st = os.lstat(f) except OSError, inst: if ff not in dc: self.ui.warn('%s: %s\n' % ( util.pathto(self.getcwd(), ff), inst.strerror)) continue if stat.S_ISDIR(st.st_mode): sorted = [ x for x in findfiles(f) ] sorted.sort() for fl in sorted: yield 'f', fl elif stat.S_ISREG(st.st_mode): ff = util.normpath(ff) if seen(ff): continue found = False self.blockignore = True if statmatch(ff, st): found = True self.blockignore = False if found: yield 'f', ff else: kind = 'unknown' if stat.S_ISCHR(st.st_mode): kind = 'character device' elif stat.S_ISBLK(st.st_mode): kind = 'block device' elif stat.S_ISFIFO(st.st_mode): kind = 'fifo' elif stat.S_ISLNK(st.st_mode): kind = 'symbolic link' elif stat.S_ISSOCK(st.st_mode): kind = 'socket' self.ui.warn('%s: unsupported file type (type is %s)\n' % ( util.pathto(self.getcwd(), ff), kind)) # step two run through anything left in the dc hash and yield # if we haven't already seen it ks = dc.keys() ks.sort() for k in ks: if not seen(k) and (statmatch(k, None)): yield 'm', k def changes(self, files=None, match=util.always): self.read() if not files: files = [self.root] dc = self.map.copy() else: dc = self.filterfiles(files) lookup, modified, added, unknown = [], [], [], [] removed, deleted = [], [] # statmatch function to eliminate entries from the dirstate copy # and put files into the appropriate array. This gets passed # to the walking code def statmatch(fn, s): fn = util.pconvert(fn) def checkappend(l, fn): if match is util.always or match(fn): l.append(fn) if not s or stat.S_ISDIR(s.st_mode): if self.ignore(fn): return False return match(fn) if not stat.S_ISREG(s.st_mode): return False c = dc.pop(fn, None) if c: type, mode, size, time = c # check the common case first if type == 'n': if size != s.st_size or (mode ^ s.st_mode) & 0100: checkappend(modified, fn) elif time != s.st_mtime: checkappend(lookup, fn) elif type == 'm': checkappend(modified, fn) elif type == 'a': checkappend(added, fn) elif type == 'r': checkappend(unknown, fn) elif not self.ignore(fn) and match(fn): unknown.append(fn) # return false because we've already handled all cases above. # there's no need for the walking code to process the file # any further. return False # because our statmatch always returns false, self.walk will only # return files in the dirstate map that are not present in the FS. # But, we still need to iterate through the results to force the # walk to complete for src, fn in self.walkhelper(files, statmatch, dc): pass # there may be patterns in the .hgignore file that prevent us # from examining entire directories in the dirstate map, so we # go back and explicitly examine any matching files we've # ignored unexamined = [fn for fn in dc.iterkeys() if self.ignore(fn) and match(fn)] for src, fn in self.walkhelper(unexamined, statmatch, dc): pass # anything left in dc didn't exist in the filesystem for fn, c in dc.iteritems(): if not match(fn): continue if c[0] == 'r': removed.append(fn) else: deleted.append(fn) return (lookup, modified, added, removed + deleted, unknown)