# Copyright (C) 2005, 2006 Canonical Ltd # # This program is free software; you can redistribute it and/or modify # it under the terms of the GNU General Public License as published by # the Free Software Foundation; either version 2 of the License, or # (at your option) any later version. # # This program is distributed in the hope that it will be useful, # but WITHOUT ANY WARRANTY; without even the implied warranty of # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the # GNU General Public License for more details. # # You should have received a copy of the GNU General Public License # along with this program; if not, write to the Free Software # Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA """Mercurial working tree support.""" import errno import os import posixpath import stat from bzrlib import ( conflicts as _mod_conflicts, lock, osutils, ) from bzrlib.errors import ( IncompatibleFormat, NoSuchFile, NotWriteLocked, ) from bzrlib.inventory import ( Inventory, InventoryDirectory, InventoryFile, InventoryLink, ) import bzrlib.workingtree from bzrlib.decorators import ( needs_write_lock, ) from mercurial.hg import ( update as hg_update, ) from bzrlib.plugins.hg.mapping import mode_kind class HgWorkingTreeFormat(bzrlib.workingtree.WorkingTreeFormat): """Working Tree format for Mercurial Working Trees. This is currently not aware of different working tree formats, but simply relies on the installed copy of mercurial to support the working tree format. """ supports_versioned_directories = False @property def _matchingbzrdir(self): from bzrlib.plugins.hg.dir import HgControlDirFormat return HgControlDirFormat() def get_format_description(self): """See WorkingTreeFormat.get_format_description().""" return "Mercurial Working Tree" def initialize(self, to_bzrdir): from bzrlib.plugins.hg.dir import HgDir if not isinstance(to_bzrdir, HgDir): raise IncompatibleFormat(self, to_bzrdir._format) return to_bzrdir.create_workingtree() class HgWorkingTree(bzrlib.workingtree.WorkingTree): """An adapter to mercurial repositories for bzr WorkingTree obejcts.""" def __init__(self, hgrepo, hgbranch, hgdir): self._inventory = Inventory() self._hgrepo = hgrepo self.bzrdir = hgdir self.repository = hgdir.open_repository() self._branch = hgbranch self._format = HgWorkingTreeFormat() self._transport = hgdir.root_transport self.basedir = hgdir.root_transport.local_abspath(".") self._detect_case_handling() self._rules_searcher = None self.views = self._make_views() self._dirstate = self._hgrepo[None] self._lock_mode = None self._lock_count = 0 def lock_read(self): """Lock the repository for read operations. :return: A bzrlib.lock.LogicalLockResult. """ if not self._lock_mode: self._lock_mode = 'r' self._lock_count = 1 else: self._lock_count += 1 self.branch.lock_read() return lock.LogicalLockResult(self.unlock) def lock_tree_write(self): if not self._lock_mode: self._lock_mode = 'w' self._lock_count = 1 elif self._lock_mode == 'r': raise errors.ReadOnlyError(self) else: self._lock_count +=1 self.branch.lock_read() return lock.LogicalLockResult(self.unlock) def lock_write(self, token=None): if not self._lock_mode: self._lock_mode = 'w' self._lock_count = 1 elif self._lock_mode == 'r': raise errors.ReadOnlyError(self) else: self._lock_count +=1 self.branch.lock_write() return lock.LogicalLockResult(self.unlock) def is_locked(self): return self._lock_count >= 1 def get_physical_lock_status(self): return False def unlock(self): if not self._lock_count: return lock.cant_unlock_not_held(self) self._cleanup() self._lock_count -= 1 if self._lock_count > 0: return self._lock_mode = None self.branch.unlock() def _detect_case_handling(self): try: self.bzrdir.control_transport.stat("RequiReS") except NoSuchFile: self.case_sensitive = True else: self.case_sensitive = False def flush(self): if self._lock_mode != 'w': raise NotWriteLocked(self) self._dirstate.write() def update_basis_by_delta(self, revid, delta): # FIXME pass @needs_write_lock def add(self, files, ids=None, kinds=None): # hg does not use ids, toss them out if isinstance(files, basestring): files = [files] if kinds is None: kinds = [osutils.file_kind(self.abspath(f)) for f in files] hg_files = [] for file, kind in zip(files, kinds): if kind == "directory": continue hg_files.append(file.encode('utf-8')) # hg does not canonicalise paths : make them absolute self._dirstate.add(hg_files) def unversion(self, file_ids): for file_id in file_ids: path = self.id2path(file_id) self._dirstate.remove(path.encode("utf-8")) def stored_kind(self, file_id, path=None): if path is not None: path = self.id2path(file_id) return mode_kind(self._dirstate._map[path.encode("utf-8")][1]) def _validate_unicode_text(self, text, context): """Verify things like commit messages don't have bogus characters.""" if '\r' in text: raise ValueError('Invalid value for %s: %r' % (context, text)) def _validate_revprops(self, revprops): for key, value in revprops.iteritems(): # We know that the XML serializers do not round trip '\r' # correctly, so refuse to accept them if not isinstance(value, basestring): raise ValueError('revision property (%s) is not a valid' ' (unicode) string: %r' % (key, value)) self._validate_unicode_text(value, 'revision property (%s)' % (key,)) def _reset_data(self): """Reset all cached data.""" def update(self, revision=None, change_reporter=None, possible_transports=None): if revision is not None: node, mapping = self.repository.lookup_bzr_revision_id(revision) else: node = None hg_update(self._hgrepo, node) def conflicts(self): return _mod_conflicts.ConflictList() def get_root_id(self): return self.path2id("") def path2id(self, path): # FIXME: For the time being; should use file id map eventually return self._branch.mapping.generate_file_id(path) def has_or_had_id(self, file_id): raise NotImplementedError(self.has_or_had_id) def has_id(self, file_id): raise NotImplementedError(self.has_id) def id2path(self, file_id): assert type(file_id) == str return self._branch.mapping.parse_file_id(file_id) def revision_tree(self, revid): return self.repository.revision_tree(revid) def _is_executable_from_path_and_stat_from_stat(self, path, stat_result): mode = stat_result.st_mode return bool(stat.S_ISREG(mode) and stat.S_IEXEC & mode) def extras(self): return self._dirstate.extra() if not osutils.supports_executable(): def is_executable(self, file_id, path=None): basis_tree = self.basis_tree() if file_id in basis_tree: return basis_tree.is_executable(file_id) # Default to not executable return False else: def is_executable(self, file_id, path=None): if not path: path = self.id2path(file_id) mode = os.lstat(self.abspath(path)).st_mode return bool(stat.S_ISREG(mode) and stat.S_IEXEC & mode) _is_executable_from_path_and_stat = \ _is_executable_from_path_and_stat_from_stat def get_file_mtime(self, file_id, path=None): """See Tree.get_file_mtime.""" if not path: path = self.id2path(file_id) return os.lstat(self.abspath(path)).st_mtime def get_file_sha1(self, file_id, path=None, stat_value=None): if path is None: path = self.id2path(file_id) try: return osutils.sha_file_by_name(self.abspath(path).encode(osutils._fs_enc)) except OSError, (num, msg): if num in (errno.EISDIR, errno.ENOENT): return None raise def _get_dir_ie(self, path): if path == "": parent_id = None else: parent_id = self.path2id(posixpath.dirname(path)) return InventoryDirectory(self.path2id(path), posixpath.basename(path), parent_id) def _get_file_ie(self, path, parent_id, flags): file_id = self.path2id(path) name = osutils.basename(path) if 'l' in flags: ie = InventoryLink(file_id, name, parent_id) ie.symlink_target = self.get_symlink_target(file_id, path) else: ie = InventoryFile(file_id, name, parent_id) ie.text_sha1 = self.get_file_sha1(file_id, path) ie.executable = ('x' in flags) return ie def iter_entries_by_dir(self, specific_file_ids=None, yield_parents=False): # FIXME: Support specific_file_ids # FIXME: yield actual inventory entries if specific_file_ids is not None: raise NotImplementedError(self.iter_entries_by_dir) # Everything has a root directory yield u"", self._get_dir_ie(u"") directories = set() for p in self._dirstate: parent = posixpath.dirname(p) while not parent in directories: decoded_parent = parent.decode("utf-8") yield decoded_parent, self._get_dir_ie(decoded_parent) directories.add(parent) if parent == "": break parent = posixpath.dirname(parent) fflags = self._dirstate.flags(p) decoded_path = p.decode("utf-8") yield decoded_path, self._get_file_ie(decoded_path, self.path2id(parent), fflags)