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  • Committer: Robert Collins
  • Date: 2005-10-19 10:11:57 UTC
  • mfrom: (1185.16.78)
  • mto: This revision was merged to the branch mainline in revision 1470.
  • Revision ID: robertc@robertcollins.net-20051019101157-17438d311e746b4f
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breezy/git/annotate.py
1
 
# Copyright (C) 2018 Jelmer Vernooij <jelmer@jelmer.uk>
2
 
#
3
 
# This program is free software; you can redistribute it and/or modify
4
 
# it under the terms of the GNU General Public License as published by
5
 
# the Free Software Foundation; either version 2 of the License, or
6
 
# (at your option) any later version.
7
 
#
8
 
# This program is distributed in the hope that it will be useful,
9
 
# but WITHOUT ANY WARRANTY; without even the implied warranty of
10
 
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
11
 
# GNU General Public License for more details.
12
 
#
13
 
# You should have received a copy of the GNU General Public License
14
 
# along with this program; if not, write to the Free Software
15
 
# Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
16
 
 
17
 
"""Annotate."""
18
 
 
19
 
from __future__ import absolute_import
20
 
 
21
 
from dulwich.object_store import (
22
 
    tree_lookup_path,
23
 
    )
24
 
 
25
 
from .. import osutils
26
 
from ..errors import (
27
 
    NoSuchRevision,
28
 
    UnavailableRepresentation,
29
 
    )
30
 
from ..graph import Graph
31
 
from ..revision import (
32
 
    NULL_REVISION,
33
 
    )
34
 
 
35
 
 
36
 
class GitBlobContentFactory(object):
37
 
    """Static data content factory.
38
 
 
39
 
    This takes a fulltext when created and just returns that during
40
 
    get_bytes_as('fulltext').
41
 
 
42
 
    :ivar sha1: None, or the sha1 of the content fulltext.
43
 
    :ivar storage_kind: The native storage kind of this factory. Always
44
 
        'fulltext'.
45
 
    :ivar key: The key of this content. Each key is a tuple with a single
46
 
        string in it.
47
 
    :ivar parents: A tuple of parent keys for self.key. If the object has
48
 
        no parent information, None (as opposed to () for an empty list of
49
 
        parents).
50
 
     """
51
 
 
52
 
    def __init__(self, store, path, revision, blob_id):
53
 
        """Create a ContentFactory."""
54
 
        self.store = store
55
 
        self.key = (path, revision)
56
 
        self.storage_kind = 'git-blob'
57
 
        self.parents = None
58
 
        self.blob_id = blob_id
59
 
        self.size = None
60
 
 
61
 
    def get_bytes_as(self, storage_kind):
62
 
        if storage_kind == 'fulltext':
63
 
            return self.store[self.blob_id].as_raw_string()
64
 
        elif storage_kind == 'lines':
65
 
            return list(osutils.chunks_to_lines(self.store[self.blob_id].as_raw_chunks()))
66
 
        elif storage_kind == 'chunked':
67
 
            return self.store[self.blob_id].as_raw_chunks()
68
 
        raise UnavailableRepresentation(self.key, storage_kind,
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                                        self.storage_kind)
70
 
 
71
 
    def iter_bytes_as(self, storage_kind):
72
 
        if storage_kind == 'lines':
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            return iter(osutils.chunks_to_lines(self.store[self.blob_id].as_raw_chunks()))
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        elif storage_kind == 'chunked':
75
 
            return iter(self.store[self.blob_id].as_raw_chunks())
76
 
        raise UnavailableRepresentation(self.key, storage_kind,
77
 
                                        self.storage_kind)
78
 
 
79
 
 
80
 
class GitAbsentContentFactory(object):
81
 
    """Absent data content factory.
82
 
 
83
 
    :ivar sha1: None, or the sha1 of the content fulltext.
84
 
    :ivar storage_kind: The native storage kind of this factory. Always
85
 
        'fulltext'.
86
 
    :ivar key: The key of this content. Each key is a tuple with a single
87
 
        string in it.
88
 
    :ivar parents: A tuple of parent keys for self.key. If the object has
89
 
        no parent information, None (as opposed to () for an empty list of
90
 
        parents).
91
 
     """
92
 
 
93
 
    def __init__(self, store, path, revision):
94
 
        """Create a ContentFactory."""
95
 
        self.store = store
96
 
        self.key = (path, revision)
97
 
        self.storage_kind = 'absent'
98
 
        self.parents = None
99
 
        self.size = None
100
 
 
101
 
    def get_bytes_as(self, storage_kind):
102
 
        raise ValueError
103
 
 
104
 
    def iter_bytes_as(self, storage_kind):
105
 
        raise ValueError
106
 
 
107
 
 
108
 
class AnnotateProvider(object):
109
 
 
110
 
    def __init__(self, change_scanner):
111
 
        self.change_scanner = change_scanner
112
 
        self.store = self.change_scanner.repository._git.object_store
113
 
 
114
 
    def _get_parents(self, path, text_revision):
115
 
        commit_id, mapping = (
116
 
            self.change_scanner.repository.lookup_bzr_revision_id(
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                text_revision))
118
 
        text_parents = []
119
 
        path = path.encode('utf-8')
120
 
        for commit_parent in self.store[commit_id].parents:
121
 
            try:
122
 
                (path, text_parent) = (
123
 
                    self.change_scanner.find_last_change_revision(
124
 
                        path, commit_parent))
125
 
            except KeyError:
126
 
                continue
127
 
            if text_parent not in text_parents:
128
 
                text_parents.append(text_parent)
129
 
        return tuple([
130
 
            (path.decode('utf-8'),
131
 
                self.change_scanner.repository.lookup_foreign_revision_id(p))
132
 
            for p in text_parents])
133
 
 
134
 
    def get_parent_map(self, keys):
135
 
        ret = {}
136
 
        for key in keys:
137
 
            (path, text_revision) = key
138
 
            if text_revision == NULL_REVISION:
139
 
                ret[key] = ()
140
 
                continue
141
 
            try:
142
 
                ret[key] = self._get_parents(path, text_revision)
143
 
            except KeyError:
144
 
                pass
145
 
        return ret
146
 
 
147
 
    def get_record_stream(self, keys, ordering, include_delta_closure):
148
 
        if ordering == 'topological':
149
 
            graph = Graph(self)
150
 
            keys = graph.iter_topo_order(keys)
151
 
        store = self.change_scanner.repository._git.object_store
152
 
        for (path, text_revision) in keys:
153
 
            try:
154
 
                commit_id, mapping = (
155
 
                    self.change_scanner.repository.lookup_bzr_revision_id(
156
 
                        text_revision))
157
 
            except NoSuchRevision:
158
 
                yield GitAbsentContentFactory(store, path, text_revision)
159
 
                continue
160
 
 
161
 
            try:
162
 
                tree_id = store[commit_id].tree
163
 
            except KeyError:
164
 
                yield GitAbsentContentFactory(store, path, text_revision)
165
 
                continue
166
 
            try:
167
 
                (mode, blob_sha) = tree_lookup_path(
168
 
                    store.__getitem__, tree_id, path.encode('utf-8'))
169
 
            except KeyError:
170
 
                yield GitAbsentContentFactory(store, path, text_revision)
171
 
            else:
172
 
                yield GitBlobContentFactory(
173
 
                    store, path, text_revision, blob_sha)