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Viewing changes to bzrlib/workingtree.py

  • Committer: INADA Naoki
  • Date: 2011-05-14 09:58:36 UTC
  • mfrom: (5830.2.22 i18n-msgextract)
  • mto: This revision was merged to the branch mainline in revision 5891.
  • Revision ID: songofacandy@gmail.com-20110514095836-38l651fp8bmb4bni
mergeĀ fromĀ i18n-msgextract

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from bzrlib import symbol_versioning
74
74
from bzrlib.decorators import needs_read_lock, needs_write_lock
75
75
from bzrlib.lock import LogicalLockResult
76
 
from bzrlib.lockable_files import LockableFiles
77
 
from bzrlib.lockdir import LockDir
78
76
import bzrlib.mutabletree
79
77
from bzrlib.mutabletree import needs_tree_write_lock
80
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from bzrlib import osutils
89
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    supports_executable,
90
88
    )
91
89
from bzrlib.trace import mutter, note
92
 
from bzrlib.transport.local import LocalTransport
93
90
from bzrlib.revision import CURRENT_REVISION
94
91
from bzrlib.symbol_versioning import (
95
92
    deprecated_passed,
2015
2012
        inventory.revision_id = revision_id
2016
2013
        return xml7.serializer_v7.write_inventory_to_string(inventory)
2017
2014
 
 
2015
    @needs_tree_write_lock
 
2016
    def set_conflicts(self, conflicts):
 
2017
        self._put_rio('conflicts', conflicts.to_stanzas(),
 
2018
                      CONFLICT_HEADER_1)
 
2019
 
 
2020
    @needs_tree_write_lock
 
2021
    def add_conflicts(self, new_conflicts):
 
2022
        conflict_set = set(self.conflicts())
 
2023
        conflict_set.update(set(list(new_conflicts)))
 
2024
        self.set_conflicts(_mod_conflicts.ConflictList(sorted(conflict_set,
 
2025
                                       key=_mod_conflicts.Conflict.sort_key)))
 
2026
 
 
2027
    @needs_read_lock
 
2028
    def conflicts(self):
 
2029
        try:
 
2030
            confile = self._transport.get('conflicts')
 
2031
        except errors.NoSuchFile:
 
2032
            return _mod_conflicts.ConflictList()
 
2033
        try:
 
2034
            try:
 
2035
                if confile.next() != CONFLICT_HEADER_1 + '\n':
 
2036
                    raise errors.ConflictFormatError()
 
2037
            except StopIteration:
 
2038
                raise errors.ConflictFormatError()
 
2039
            reader = _mod_rio.RioReader(confile)
 
2040
            return _mod_conflicts.ConflictList.from_stanzas(reader)
 
2041
        finally:
 
2042
            confile.close()
 
2043
 
2018
2044
    def read_basis_inventory(self):
2019
2045
        """Read the cached basis inventory."""
2020
2046
        path = self._basis_inventory_name()
2883
2909
                    pending.append(dir)
2884
2910
 
2885
2911
 
2886
 
class WorkingTree3(InventoryWorkingTree):
2887
 
    """This is the Format 3 working tree.
2888
 
 
2889
 
    This differs from the base WorkingTree by:
2890
 
     - having its own file lock
2891
 
     - having its own last-revision property.
2892
 
 
2893
 
    This is new in bzr 0.8
2894
 
    """
2895
 
 
2896
 
    @needs_read_lock
2897
 
    def _last_revision(self):
2898
 
        """See Mutable.last_revision."""
2899
 
        try:
2900
 
            return self._transport.get_bytes('last-revision')
2901
 
        except errors.NoSuchFile:
2902
 
            return _mod_revision.NULL_REVISION
2903
 
 
2904
 
    def _change_last_revision(self, revision_id):
2905
 
        """See WorkingTree._change_last_revision."""
2906
 
        if revision_id is None or revision_id == _mod_revision.NULL_REVISION:
2907
 
            try:
2908
 
                self._transport.delete('last-revision')
2909
 
            except errors.NoSuchFile:
2910
 
                pass
2911
 
            return False
2912
 
        else:
2913
 
            self._transport.put_bytes('last-revision', revision_id,
2914
 
                mode=self.bzrdir._get_file_mode())
2915
 
            return True
2916
 
 
2917
 
    def _get_check_refs(self):
2918
 
        """Return the references needed to perform a check of this tree."""
2919
 
        return [('trees', self.last_revision())]
2920
 
 
2921
 
    @needs_tree_write_lock
2922
 
    def set_conflicts(self, conflicts):
2923
 
        self._put_rio('conflicts', conflicts.to_stanzas(),
2924
 
                      CONFLICT_HEADER_1)
2925
 
 
2926
 
    @needs_tree_write_lock
2927
 
    def add_conflicts(self, new_conflicts):
2928
 
        conflict_set = set(self.conflicts())
2929
 
        conflict_set.update(set(list(new_conflicts)))
2930
 
        self.set_conflicts(_mod_conflicts.ConflictList(sorted(conflict_set,
2931
 
                                       key=_mod_conflicts.Conflict.sort_key)))
2932
 
 
2933
 
    @needs_read_lock
2934
 
    def conflicts(self):
2935
 
        try:
2936
 
            confile = self._transport.get('conflicts')
2937
 
        except errors.NoSuchFile:
2938
 
            return _mod_conflicts.ConflictList()
2939
 
        try:
2940
 
            try:
2941
 
                if confile.next() != CONFLICT_HEADER_1 + '\n':
2942
 
                    raise errors.ConflictFormatError()
2943
 
            except StopIteration:
2944
 
                raise errors.ConflictFormatError()
2945
 
            reader = _mod_rio.RioReader(confile)
2946
 
            return _mod_conflicts.ConflictList.from_stanzas(reader)
2947
 
        finally:
2948
 
            confile.close()
2949
 
 
2950
 
    def unlock(self):
2951
 
        # do non-implementation specific cleanup
2952
 
        self._cleanup()
2953
 
        if self._control_files._lock_count == 1:
2954
 
            # _inventory_is_modified is always False during a read lock.
2955
 
            if self._inventory_is_modified:
2956
 
                self.flush()
2957
 
            self._write_hashcache_if_dirty()
2958
 
        # reverse order of locking.
2959
 
        try:
2960
 
            return self._control_files.unlock()
2961
 
        finally:
2962
 
            self.branch.unlock()
2963
 
 
2964
 
 
2965
2912
class WorkingTreeFormatRegistry(controldir.ControlComponentFormatRegistry):
2966
2913
    """Registry for working tree formats."""
2967
2914
 
3131
3078
        format_registry.remove(format)
3132
3079
 
3133
3080
 
3134
 
class WorkingTreeFormat3(WorkingTreeFormat):
3135
 
    """The second working tree format updated to record a format marker.
3136
 
 
3137
 
    This format:
3138
 
        - exists within a metadir controlling .bzr
3139
 
        - includes an explicit version marker for the workingtree control
3140
 
          files, separate from the BzrDir format
3141
 
        - modifies the hash cache format
3142
 
        - is new in bzr 0.8
3143
 
        - uses a LockDir to guard access for writes.
3144
 
    """
3145
 
 
3146
 
    upgrade_recommended = True
3147
 
 
3148
 
    missing_parent_conflicts = True
3149
 
 
3150
 
    def get_format_string(self):
3151
 
        """See WorkingTreeFormat.get_format_string()."""
3152
 
        return "Bazaar-NG Working Tree format 3"
3153
 
 
3154
 
    def get_format_description(self):
3155
 
        """See WorkingTreeFormat.get_format_description()."""
3156
 
        return "Working tree format 3"
3157
 
 
3158
 
    _lock_file_name = 'lock'
3159
 
    _lock_class = LockDir
3160
 
 
3161
 
    _tree_class = WorkingTree3
3162
 
 
3163
 
    def __get_matchingbzrdir(self):
3164
 
        return bzrdir.BzrDirMetaFormat1()
3165
 
 
3166
 
    _matchingbzrdir = property(__get_matchingbzrdir)
3167
 
 
3168
 
    def _open_control_files(self, a_bzrdir):
3169
 
        transport = a_bzrdir.get_workingtree_transport(None)
3170
 
        return LockableFiles(transport, self._lock_file_name,
3171
 
                             self._lock_class)
3172
 
 
3173
 
    def initialize(self, a_bzrdir, revision_id=None, from_branch=None,
3174
 
                   accelerator_tree=None, hardlink=False):
3175
 
        """See WorkingTreeFormat.initialize().
3176
 
 
3177
 
        :param revision_id: if supplied, create a working tree at a different
3178
 
            revision than the branch is at.
3179
 
        :param accelerator_tree: A tree which can be used for retrieving file
3180
 
            contents more quickly than the revision tree, i.e. a workingtree.
3181
 
            The revision tree will be used for cases where accelerator_tree's
3182
 
            content is different.
3183
 
        :param hardlink: If true, hard-link files from accelerator_tree,
3184
 
            where possible.
3185
 
        """
3186
 
        if not isinstance(a_bzrdir.transport, LocalTransport):
3187
 
            raise errors.NotLocalUrl(a_bzrdir.transport.base)
3188
 
        transport = a_bzrdir.get_workingtree_transport(self)
3189
 
        control_files = self._open_control_files(a_bzrdir)
3190
 
        control_files.create_lock()
3191
 
        control_files.lock_write()
3192
 
        transport.put_bytes('format', self.get_format_string(),
3193
 
            mode=a_bzrdir._get_file_mode())
3194
 
        if from_branch is not None:
3195
 
            branch = from_branch
3196
 
        else:
3197
 
            branch = a_bzrdir.open_branch()
3198
 
        if revision_id is None:
3199
 
            revision_id = _mod_revision.ensure_null(branch.last_revision())
3200
 
        # WorkingTree3 can handle an inventory which has a unique root id.
3201
 
        # as of bzr 0.12. However, bzr 0.11 and earlier fail to handle
3202
 
        # those trees. And because there isn't a format bump inbetween, we
3203
 
        # are maintaining compatibility with older clients.
3204
 
        # inv = Inventory(root_id=gen_root_id())
3205
 
        inv = self._initial_inventory()
3206
 
        wt = self._tree_class(a_bzrdir.root_transport.local_abspath('.'),
3207
 
                         branch,
3208
 
                         inv,
3209
 
                         _internal=True,
3210
 
                         _format=self,
3211
 
                         _bzrdir=a_bzrdir,
3212
 
                         _control_files=control_files)
3213
 
        wt.lock_tree_write()
3214
 
        try:
3215
 
            basis_tree = branch.repository.revision_tree(revision_id)
3216
 
            # only set an explicit root id if there is one to set.
3217
 
            if basis_tree.inventory.root is not None:
3218
 
                wt.set_root_id(basis_tree.get_root_id())
3219
 
            if revision_id == _mod_revision.NULL_REVISION:
3220
 
                wt.set_parent_trees([])
3221
 
            else:
3222
 
                wt.set_parent_trees([(revision_id, basis_tree)])
3223
 
            transform.build_tree(basis_tree, wt)
3224
 
        finally:
3225
 
            # Unlock in this order so that the unlock-triggers-flush in
3226
 
            # WorkingTree is given a chance to fire.
3227
 
            control_files.unlock()
3228
 
            wt.unlock()
3229
 
        return wt
3230
 
 
3231
 
    def _initial_inventory(self):
3232
 
        return inventory.Inventory()
3233
 
 
3234
 
    def __init__(self):
3235
 
        super(WorkingTreeFormat3, self).__init__()
3236
 
 
3237
 
    def open(self, a_bzrdir, _found=False):
3238
 
        """Return the WorkingTree object for a_bzrdir
3239
 
 
3240
 
        _found is a private parameter, do not use it. It is used to indicate
3241
 
               if format probing has already been done.
3242
 
        """
3243
 
        if not _found:
3244
 
            # we are being called directly and must probe.
3245
 
            raise NotImplementedError
3246
 
        if not isinstance(a_bzrdir.transport, LocalTransport):
3247
 
            raise errors.NotLocalUrl(a_bzrdir.transport.base)
3248
 
        wt = self._open(a_bzrdir, self._open_control_files(a_bzrdir))
3249
 
        return wt
3250
 
 
3251
 
    def _open(self, a_bzrdir, control_files):
3252
 
        """Open the tree itself.
3253
 
 
3254
 
        :param a_bzrdir: the dir for the tree.
3255
 
        :param control_files: the control files for the tree.
3256
 
        """
3257
 
        return self._tree_class(a_bzrdir.root_transport.local_abspath('.'),
3258
 
                                _internal=True,
3259
 
                                _format=self,
3260
 
                                _bzrdir=a_bzrdir,
3261
 
                                _control_files=control_files)
3262
 
 
3263
 
    def __str__(self):
3264
 
        return self.get_format_string()
3265
 
 
3266
 
 
3267
3081
format_registry.register_lazy("Bazaar Working Tree Format 4 (bzr 0.15)\n",
3268
3082
    "bzrlib.workingtree_4", "WorkingTreeFormat4")
3269
3083
format_registry.register_lazy("Bazaar Working Tree Format 5 (bzr 1.11)\n",
3270
3084
    "bzrlib.workingtree_4", "WorkingTreeFormat5")
3271
3085
format_registry.register_lazy("Bazaar Working Tree Format 6 (bzr 1.14)\n",
3272
3086
    "bzrlib.workingtree_4", "WorkingTreeFormat6")
3273
 
format_registry.register(WorkingTreeFormat3())
 
3087
format_registry.register_lazy("Bazaar-NG Working Tree format 3",
 
3088
    "bzrlib.workingtree_3", "WorkingTreeFormat3")
3274
3089
format_registry.set_default_key("Bazaar Working Tree Format 6 (bzr 1.14)\n")