← Back to branch summary

~bzr-pqm/bzr/bzr.dev

« back to all changes in this revision

Viewing changes to bzrlib/store/text.py

merge from Martin.

Show diffs side-by-side

added added

removed removed

Lines of Context:
bzrlib/store/text.py
1
 
# Copyright (C) 2005, 2006, 2008, 2009, 2010 Canonical Ltd
2
 
#
 
1
# Copyright (C) 2005 by Canonical Development Ltd
 
2
 
3
3
# This program is free software; you can redistribute it and/or modify
4
4
# it under the terms of the GNU General Public License as published by
5
5
# the Free Software Foundation; either version 2 of the License, or
6
6
# (at your option) any later version.
7
 
#
 
7
 
8
8
# This program is distributed in the hope that it will be useful,
9
9
# but WITHOUT ANY WARRANTY; without even the implied warranty of
10
10
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
11
11
# GNU General Public License for more details.
12
 
#
 
12
 
13
13
# You should have received a copy of the GNU General Public License
14
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
 
15
# Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
16
16
 
17
 
"""A store that keeps the full text of every version.
 
17
"""
 
18
A store that keeps the full text of every version.
18
19
 
19
20
This store keeps uncompressed versions of the full text. It does not
20
21
do any sort of delta compression.
21
22
"""
22
23
 
23
 
from __future__ import absolute_import
24
 
 
25
 
import gzip
26
24
import os
27
 
 
28
 
from bzrlib import osutils
29
 
from bzrlib.errors import BzrError, NoSuchFile, FileExists
30
25
import bzrlib.store
 
26
from bzrlib.store import hash_prefix
31
27
from bzrlib.trace import mutter
 
28
from bzrlib.errors import BzrError, NoSuchFile, FileExists
32
29
 
 
30
import gzip
 
31
from cStringIO import StringIO
33
32
 
34
33
 
35
34
class TextStore(bzrlib.store.TransportStore):
45
44
    def _add_compressed(self, fn, f):
46
45
        from cStringIO import StringIO
47
46
        from bzrlib.osutils import pumpfile
48
 
 
 
47
        
49
48
        if isinstance(f, basestring):
50
49
            f = StringIO(f)
51
 
 
 
50
            
52
51
        sio = StringIO()
53
52
        gf = gzip.GzipFile(mode='wb', fileobj=sio)
54
53
        # if pumpfile handles files that don't fit in ram,
66
65
 
67
66
    def _try_put(self, fn, f):
68
67
        try:
69
 
            self._transport.put_file(fn, f, mode=self._file_mode)
 
68
            self._transport.put(fn, f, mode=self._file_mode)
70
69
        except NoSuchFile:
71
70
            if not self._prefixed:
72
71
                raise
74
73
                self._transport.mkdir(os.path.dirname(fn), mode=self._dir_mode)
75
74
            except FileExists:
76
75
                pass
77
 
            self._transport.put_file(fn, f, mode=self._file_mode)
 
76
            self._transport.put(fn, f, mode=self._file_mode)
78
77
 
79
78
    def _get(self, fn):
80
79
        if fn.endswith('.gz'):
96
95
            raise KeyError(fileid + '-' + str(suffix))
97
96
 
98
97
        try:
99
 
            result = other._transport.copy_to([path], self._transport,
 
98
            result = other._transport.copy_to([path], self._transport, pb=pb,
100
99
                                              mode=self._file_mode)
101
100
        except NoSuchFile:
102
101
            if not self._prefixed:
103
102
                raise
104
103
            try:
105
 
                self._transport.mkdir(osutils.dirname(path), mode=self._dir_mode)
 
104
                self._transport.mkdir(hash_prefix(fileid)[:-1], mode=self._dir_mode)
106
105
            except FileExists:
107
106
                pass
108
 
            result = other._transport.copy_to([path], self._transport,
 
107
            result = other._transport.copy_to([path], self._transport, pb=pb,
109
108
                                              mode=self._file_mode)
110
109
 
111
110
        if result != 1:
117
116
        # gzip.GzipFile.read() requires a tell() function
118
117
        # but some transports return objects that cannot seek
119
118
        # so buffer them in a StringIO instead
120
 
        if getattr(f, 'tell', None) is not None:
 
119
        if hasattr(f, 'tell'):
121
120
            return gzip.GzipFile(mode='rb', fileobj=f)
122
 
        try:
 
121
        else:
123
122
            from cStringIO import StringIO
124
123
            sio = StringIO(f.read())
125
124
            return gzip.GzipFile(mode='rb', fileobj=sio)
126
 
        finally:
127
 
            f.close()
 
125
 
 
126
 
 
127
def ScratchTextStore():
 
128
    return TextStore(ScratchTransport())