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inventory.py
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"""Git inventory."""
19
19
 
20
20
 
21
 
import stat
 
21
from dulwich.objects import (
 
22
    Blob,
 
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    Tree,
 
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    )
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25
 
23
26
 
24
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from bzrlib import (
26
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    inventory,
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30
    osutils,
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    ui,
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    urlutils,
 
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    )
 
33
 
 
34
from bzrlib.plugins.git.mapping import (
 
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    mode_kind,
 
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    mode_is_executable,
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    )
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38
 
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class GitInventoryEntry(inventory.InventoryEntry):
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41
 
 
42
    _git_class = None
 
43
 
35
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    def __init__(self, inv, parent_id, hexsha, path, name, executable):
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45
        self.name = name
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46
        self.parent_id = parent_id
41
50
        self.path = path
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51
        self.revision = self._inventory.revision_id
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        self.executable = executable
44
 
        self.file_id = self._inventory.mapping.generate_file_id(path.encode('utf-8'))
 
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        self.file_id = self._inventory.mapping.generate_file_id(
 
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            path.encode('utf-8'))
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55
 
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    @property
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    def object(self):
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        if self._object is None:
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            self._object = self._inventory.store[self.hexsha]
 
60
            assert isinstance(self._object, self._git_class), \
 
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                    "Expected instance of %r, got %r" % \
 
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                    (self._git_class, self._object)
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63
        return self._object
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64
 
52
65
 
53
66
class GitInventoryFile(GitInventoryEntry):
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67
 
 
68
    _git_class = Blob
 
69
 
55
70
    def __init__(self, inv, parent_id, hexsha, path, basename, executable):
56
 
        super(GitInventoryFile, self).__init__(inv, parent_id, hexsha, path, basename, executable)
 
71
        super(GitInventoryFile, self).__init__(inv, parent_id, hexsha, path,
 
72
            basename, executable)
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73
        self.kind = 'file'
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74
        self.text_id = None
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        self.symlink_target = None
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76
 
61
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    @property
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    def text_sha1(self):
63
 
        return osutils.sha_string(self.object.data)
 
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        return osutils.sha_strings(self.object.chunked)
64
80
 
65
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    @property
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82
    def text_size(self):
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        return ''
82
98
 
83
99
    def copy(self):
84
 
        other = inventory.InventoryFile(self.file_id, self.name, self.parent_id)
 
100
        other = inventory.InventoryFile(self.file_id, self.name,
 
101
            self.parent_id)
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102
        other.executable = self.executable
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103
        other.text_id = self.text_id
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104
        other.text_sha1 = self.text_sha1
92
109
 
93
110
class GitInventoryLink(GitInventoryEntry):
94
111
 
 
112
    _git_class = Blob
 
113
 
95
114
    def __init__(self, inv, parent_id, hexsha, path, basename, executable):
96
115
        super(GitInventoryLink, self).__init__(inv, parent_id, hexsha, path, basename, executable)
97
116
        self.text_sha1 = None
108
127
 
109
128
    def copy(self):
110
129
        other = inventory.InventoryLink(self.file_id, self.name, self.parent_id)
 
130
        other.executable = self.executable
111
131
        other.symlink_target = self.symlink_target
112
132
        other.revision = self.revision
113
133
        return other
114
134
 
115
135
 
 
136
class GitInventoryTreeReference(GitInventoryEntry):
 
137
 
 
138
    _git_class = None
 
139
 
 
140
    def __init__(self, inv, parent_id, hexsha, path, basename, executable):
 
141
        super(GitInventoryTreeReference, self).__init__(inv, parent_id, hexsha, path, basename, executable)
 
142
        self.hexsha = hexsha
 
143
        self.reference_revision = inv.mapping.revision_id_foreign_to_bzr(hexsha)
 
144
        self.text_sha1 = None
 
145
        self.text_size = None
 
146
        self.symlink_target = None
 
147
        self.kind = 'tree-reference'
 
148
        self._children = None
 
149
 
 
150
    def kind_character(self):
 
151
        """See InventoryEntry.kind_character."""
 
152
        return '/'
 
153
 
 
154
 
116
155
class GitInventoryDirectory(GitInventoryEntry):
117
156
 
 
157
    _git_class = Tree
 
158
 
118
159
    def __init__(self, inv, parent_id, hexsha, path, basename, executable):
119
160
        super(GitInventoryDirectory, self).__init__(inv, parent_id, hexsha, path, basename, executable)
120
161
        self.text_sha1 = None
138
179
        for mode, name, hexsha in self.object.entries():
139
180
            basename = name.decode("utf-8")
140
181
            child_path = osutils.pathjoin(self.path, basename)
141
 
            entry_kind = (mode & 0700000) / 0100000
142
 
            fs_mode = mode & 0777
143
 
            executable = bool(fs_mode & 0111)
144
 
            if entry_kind == 0:
145
 
                kind_class = GitInventoryDirectory
146
 
            elif entry_kind == 1:
147
 
                file_kind = (mode & 070000) / 010000
148
 
                if file_kind == 0:
149
 
                    kind_class = GitInventoryFile
150
 
                elif file_kind == 2:
151
 
                    kind_class = GitInventoryLink
152
 
                else:
153
 
                    raise AssertionError(
154
 
                        "Unknown file kind, perms=%o." % (mode,))
155
 
            else:
156
 
                raise AssertionError(
157
 
                    "Unknown blob kind, perms=%r." % (mode,))
158
 
            self._children[basename] = kind_class(self._inventory, self.file_id, hexsha, child_path, basename, executable)
 
182
            executable = mode_is_executable(mode)
 
183
            kind_class = {'directory': GitInventoryDirectory,
 
184
                          'file': GitInventoryFile,
 
185
                          'symlink': GitInventoryLink,
 
186
                          'tree-reference': GitInventoryTreeReference}[mode_kind(mode)]
 
187
            self._children[basename] = kind_class(self._inventory,
 
188
                self.file_id, hexsha, child_path, basename, executable)
159
189
 
160
190
    def copy(self):
161
 
        other = inventory.InventoryDirectory(self.file_id, self.name, 
 
191
        other = inventory.InventoryDirectory(self.file_id, self.name,
162
192
                                             self.parent_id)
163
193
        other.revision = self.revision
164
194
        # note that children are *not* copied; they're pulled across when
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        self.root = GitInventoryDirectory(self, None, tree_id, u"", u"", False)
176
206
 
177
207
    def _get_ie(self, path):
 
208
        if path == "":
 
209
            return self.root
178
210
        parts = path.split("/")
179
211
        ie = self.root
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212
        for name in parts:
181
 
            ie = ie.children[name] 
 
213
            ie = ie.children[name]
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214
        return ie
183
215
 
184
216
    def has_filename(self, path):
222
254
class GitIndexInventory(inventory.Inventory):
223
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    """Inventory that retrieves its contents from an index file."""
224
256
 
225
 
    def __init__(self, basis_inventory, mapping, index):
 
257
    def __init__(self, basis_inventory, mapping, index, store):
226
258
        super(GitIndexInventory, self).__init__(revision_id=None, root_id=basis_inventory.root.file_id)
227
259
        self.basis_inv = basis_inventory
228
260
        self.mapping = mapping
229
261
        self.index = index
230
 
 
 
262
        self._contents_read = False
 
263
        self.store = store
 
264
        self.root = self.add_path("", 'directory',
 
265
            self.mapping.generate_file_id(""), None)
 
266
 
 
267
    def iter_entries_by_dir(self, specific_file_ids=None, yield_parents=False):
 
268
        self._read_contents()
 
269
        return super(GitIndexInventory, self).iter_entries_by_dir(
 
270
            specific_file_ids=specific_file_ids, yield_parents=yield_parents)
 
271
 
 
272
    def has_id(self, file_id):
 
273
        if type(file_id) != str:
 
274
            raise AssertionError
 
275
        try:
 
276
            self.id2path(file_id)
 
277
            return True
 
278
        except errors.NoSuchId:
 
279
            return False
 
280
 
 
281
    def has_filename(self, path):
 
282
        if path in self.index:
 
283
            return True
 
284
        self._read_contents()
 
285
        return super(GitIndexInventory, self).has_filename(path)
 
286
 
 
287
    def id2path(self, file_id):
 
288
        if type(file_id) != str:
 
289
            raise AssertionError
 
290
        path = self.mapping.parse_file_id(file_id)
 
291
        if path in self.index:
 
292
            return path
 
293
        self._read_contents()
 
294
        return super(GitIndexInventory, self).id2path(file_id)
 
295
 
 
296
    def path2id(self, path):
 
297
        if path in self.index:
 
298
            return self.mapping.generate_file_id(path)
 
299
        self._read_contents()
 
300
        return super(GitIndexInventory, self).path2id(path)
 
301
 
 
302
    def __getitem__(self, file_id):
 
303
        self._read_contents()
 
304
        return super(GitIndexInventory, self).__getitem__(file_id)
 
305
 
 
306
    def _read_contents(self):
 
307
        if self._contents_read:
 
308
            return
 
309
        self._contents_read = True
231
310
        pb = ui.ui_factory.nested_progress_bar()
232
311
        try:
233
312
            for i, (path, value) in enumerate(self.index.iteritems()):
234
 
                pb.update("creating working inventory from index", 
 
313
                pb.update("creating working inventory from index",
235
314
                        i, len(self.index))
236
315
                assert isinstance(path, str)
237
316
                assert isinstance(value, tuple) and len(value) == 10
238
 
                (ctime, mtime, ino, dev, mode, uid, gid, size, sha, flags) = value
 
317
                (ctime, mtime, dev, ino, mode, uid, gid, size, sha, flags) = value
239
318
                try:
240
319
                    old_ie = self.basis_inv._get_ie(path)
241
320
                except KeyError:
244
323
                    file_id = self.mapping.generate_file_id(path)
245
324
                else:
246
325
                    file_id = old_ie.file_id
247
 
                if stat.S_ISLNK(mode):
248
 
                    kind = 'symlink'
249
 
                else:
250
 
                    assert stat.S_ISREG(mode)
251
 
                    kind = 'file'
 
326
                if type(file_id) != str:
 
327
                    raise AssertionError
 
328
                kind = mode_kind(mode)
252
329
                if old_ie is not None and old_ie.hexsha == sha:
253
330
                    # Hasn't changed since basis inv
254
331
                    self.add_parents(path)
255
332
                    self.add(old_ie)
256
333
                else:
257
 
                    ie = self.add_path(path, kind, file_id, self.add_parents(path))
 
334
                    ie = self.add_path(path, kind, file_id,
 
335
                        self.add_parents(path))
 
336
                    data = self.store[sha].data
 
337
                    if kind == "symlink":
 
338
                        ie.symlink_target = data
 
339
                    else:
 
340
                        ie.text_sha1 = osutils.sha_string(data)
 
341
                        ie.text_size = len(data)
258
342
                    ie.revision = None
259
343
        finally:
260
344
            pb.finished()
261
345
 
262
346
    def add_parents(self, path):
263
347
        dirname, _ = osutils.split(path)
264
 
        file_id = self.path2id(dirname)
 
348
        file_id = super(GitIndexInventory, self).path2id(dirname)
265
349
        if file_id is None:
266
350
            if dirname == "":
267
351
                parent_fid = None
268
352
            else:
269
353
                parent_fid = self.add_parents(dirname)
270
 
            ie = self.add_path(dirname, 'directory', 
 
354
            ie = self.add_path(dirname, 'directory',
271
355
                    self.mapping.generate_file_id(dirname), parent_fid)
272
356
            if ie.file_id in self.basis_inv:
273
357
                ie.revision = self.basis_inv[ie.file_id].revision
274
358
            file_id = ie.file_id
 
359
        if type(file_id) != str:
 
360
            raise AssertionError
275
361
        return file_id
276
362