annotate mercurial/byterange.py @ 23172:e955549cd045

tests: write hgrc of more than two lines by using shell heredoc Here document should be readable than repeating echo commands.
author Yuya Nishihara <yuya@tcha.org>
date Tue, 04 Nov 2014 23:41:46 +0900
parents 542110817450
children 6ddc86eedc3b
Ignore whitespace changes - Everywhere: Within whitespace: At end of lines:
rev   line source
0
9117c6561b0b Add back links from file revisions to changeset revisions
mpm@selenic.com
parents:
diff changeset
1 # This library is free software; you can redistribute it and/or
9117c6561b0b Add back links from file revisions to changeset revisions
mpm@selenic.com
parents:
diff changeset
2 # modify it under the terms of the GNU Lesser General Public
9117c6561b0b Add back links from file revisions to changeset revisions
mpm@selenic.com
parents:
diff changeset
3 # License as published by the Free Software Foundation; either
9117c6561b0b Add back links from file revisions to changeset revisions
mpm@selenic.com
parents:
diff changeset
4 # version 2.1 of the License, or (at your option) any later version.
9117c6561b0b Add back links from file revisions to changeset revisions
mpm@selenic.com
parents:
diff changeset
5 #
9117c6561b0b Add back links from file revisions to changeset revisions
mpm@selenic.com
parents:
diff changeset
6 # This library is distributed in the hope that it will be useful,
9117c6561b0b Add back links from file revisions to changeset revisions
mpm@selenic.com
parents:
diff changeset
7 # but WITHOUT ANY WARRANTY; without even the implied warranty of
9117c6561b0b Add back links from file revisions to changeset revisions
mpm@selenic.com
parents:
diff changeset
8 # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
9117c6561b0b Add back links from file revisions to changeset revisions
mpm@selenic.com
parents:
diff changeset
9 # Lesser General Public License for more details.
9117c6561b0b Add back links from file revisions to changeset revisions
mpm@selenic.com
parents:
diff changeset
10 #
9117c6561b0b Add back links from file revisions to changeset revisions
mpm@selenic.com
parents:
diff changeset
11 # You should have received a copy of the GNU Lesser General Public
15782
7de7630053cb Remove FSF mailing address from GPL headers
Martin Geisler <mg@aragost.com>
parents: 14947
diff changeset
12 # License along with this library; if not, see
7de7630053cb Remove FSF mailing address from GPL headers
Martin Geisler <mg@aragost.com>
parents: 14947
diff changeset
13 # <http://www.gnu.org/licenses/>.
0
9117c6561b0b Add back links from file revisions to changeset revisions
mpm@selenic.com
parents:
diff changeset
14
9117c6561b0b Add back links from file revisions to changeset revisions
mpm@selenic.com
parents:
diff changeset
15 # This file is part of urlgrabber, a high-level cross-protocol url-grabber
9117c6561b0b Add back links from file revisions to changeset revisions
mpm@selenic.com
parents:
diff changeset
16 # Copyright 2002-2004 Michael D. Stenner, Ryan Tomayko
9117c6561b0b Add back links from file revisions to changeset revisions
mpm@selenic.com
parents:
diff changeset
17
9117c6561b0b Add back links from file revisions to changeset revisions
mpm@selenic.com
parents:
diff changeset
18 # $Id: byterange.py,v 1.9 2005/02/14 21:55:07 mstenner Exp $
9117c6561b0b Add back links from file revisions to changeset revisions
mpm@selenic.com
parents:
diff changeset
19
9117c6561b0b Add back links from file revisions to changeset revisions
mpm@selenic.com
parents:
diff changeset
20 import os
9117c6561b0b Add back links from file revisions to changeset revisions
mpm@selenic.com
parents:
diff changeset
21 import stat
9117c6561b0b Add back links from file revisions to changeset revisions
mpm@selenic.com
parents:
diff changeset
22 import urllib
9117c6561b0b Add back links from file revisions to changeset revisions
mpm@selenic.com
parents:
diff changeset
23 import urllib2
8378
59acf64995d2 byterange: fix import error
Martin Geisler <mg@lazybytes.net>
parents: 8366
diff changeset
24 import email.Utils
0
9117c6561b0b Add back links from file revisions to changeset revisions
mpm@selenic.com
parents:
diff changeset
25
9117c6561b0b Add back links from file revisions to changeset revisions
mpm@selenic.com
parents:
diff changeset
26 class RangeError(IOError):
9117c6561b0b Add back links from file revisions to changeset revisions
mpm@selenic.com
parents:
diff changeset
27 """Error raised when an unsatisfiable range is requested."""
9117c6561b0b Add back links from file revisions to changeset revisions
mpm@selenic.com
parents:
diff changeset
28 pass
575
7f5ce4bbdd7b More whitespace cleanups
mpm@selenic.com
parents: 0
diff changeset
29
0
9117c6561b0b Add back links from file revisions to changeset revisions
mpm@selenic.com
parents:
diff changeset
30 class HTTPRangeHandler(urllib2.BaseHandler):
9117c6561b0b Add back links from file revisions to changeset revisions
mpm@selenic.com
parents:
diff changeset
31 """Handler that enables HTTP Range headers.
575
7f5ce4bbdd7b More whitespace cleanups
mpm@selenic.com
parents: 0
diff changeset
32
0
9117c6561b0b Add back links from file revisions to changeset revisions
mpm@selenic.com
parents:
diff changeset
33 This was extremely simple. The Range header is a HTTP feature to
575
7f5ce4bbdd7b More whitespace cleanups
mpm@selenic.com
parents: 0
diff changeset
34 begin with so all this class does is tell urllib2 that the
17424
e7cfe3587ea4 fix trivial spelling errors
Mads Kiilerich <mads@kiilerich.com>
parents: 15782
diff changeset
35 "206 Partial Content" response from the HTTP server is what we
0
9117c6561b0b Add back links from file revisions to changeset revisions
mpm@selenic.com
parents:
diff changeset
36 expected.
575
7f5ce4bbdd7b More whitespace cleanups
mpm@selenic.com
parents: 0
diff changeset
37
0
9117c6561b0b Add back links from file revisions to changeset revisions
mpm@selenic.com
parents:
diff changeset
38 Example:
9117c6561b0b Add back links from file revisions to changeset revisions
mpm@selenic.com
parents:
diff changeset
39 import urllib2
9117c6561b0b Add back links from file revisions to changeset revisions
mpm@selenic.com
parents:
diff changeset
40 import byterange
575
7f5ce4bbdd7b More whitespace cleanups
mpm@selenic.com
parents: 0
diff changeset
41
0
9117c6561b0b Add back links from file revisions to changeset revisions
mpm@selenic.com
parents:
diff changeset
42 range_handler = range.HTTPRangeHandler()
9117c6561b0b Add back links from file revisions to changeset revisions
mpm@selenic.com
parents:
diff changeset
43 opener = urllib2.build_opener(range_handler)
575
7f5ce4bbdd7b More whitespace cleanups
mpm@selenic.com
parents: 0
diff changeset
44
0
9117c6561b0b Add back links from file revisions to changeset revisions
mpm@selenic.com
parents:
diff changeset
45 # install it
9117c6561b0b Add back links from file revisions to changeset revisions
mpm@selenic.com
parents:
diff changeset
46 urllib2.install_opener(opener)
575
7f5ce4bbdd7b More whitespace cleanups
mpm@selenic.com
parents: 0
diff changeset
47
0
9117c6561b0b Add back links from file revisions to changeset revisions
mpm@selenic.com
parents:
diff changeset
48 # create Request and set Range header
9117c6561b0b Add back links from file revisions to changeset revisions
mpm@selenic.com
parents:
diff changeset
49 req = urllib2.Request('http://www.python.org/')
9117c6561b0b Add back links from file revisions to changeset revisions
mpm@selenic.com
parents:
diff changeset
50 req.header['Range'] = 'bytes=30-50'
9117c6561b0b Add back links from file revisions to changeset revisions
mpm@selenic.com
parents:
diff changeset
51 f = urllib2.urlopen(req)
9117c6561b0b Add back links from file revisions to changeset revisions
mpm@selenic.com
parents:
diff changeset
52 """
575
7f5ce4bbdd7b More whitespace cleanups
mpm@selenic.com
parents: 0
diff changeset
53
0
9117c6561b0b Add back links from file revisions to changeset revisions
mpm@selenic.com
parents:
diff changeset
54 def http_error_206(self, req, fp, code, msg, hdrs):
9117c6561b0b Add back links from file revisions to changeset revisions
mpm@selenic.com
parents:
diff changeset
55 # 206 Partial Content Response
9117c6561b0b Add back links from file revisions to changeset revisions
mpm@selenic.com
parents:
diff changeset
56 r = urllib.addinfourl(fp, hdrs, req.get_full_url())
9117c6561b0b Add back links from file revisions to changeset revisions
mpm@selenic.com
parents:
diff changeset
57 r.code = code
9117c6561b0b Add back links from file revisions to changeset revisions
mpm@selenic.com
parents:
diff changeset
58 r.msg = msg
9117c6561b0b Add back links from file revisions to changeset revisions
mpm@selenic.com
parents:
diff changeset
59 return r
575
7f5ce4bbdd7b More whitespace cleanups
mpm@selenic.com
parents: 0
diff changeset
60
0
9117c6561b0b Add back links from file revisions to changeset revisions
mpm@selenic.com
parents:
diff changeset
61 def http_error_416(self, req, fp, code, msg, hdrs):
9117c6561b0b Add back links from file revisions to changeset revisions
mpm@selenic.com
parents:
diff changeset
62 # HTTP's Range Not Satisfiable error
9117c6561b0b Add back links from file revisions to changeset revisions
mpm@selenic.com
parents:
diff changeset
63 raise RangeError('Requested Range Not Satisfiable')
9117c6561b0b Add back links from file revisions to changeset revisions
mpm@selenic.com
parents:
diff changeset
64
14764
a7d5816087a9 classes: fix class style problems found by b071cd58af50
Thomas Arendsen Hein <thomas@intevation.de>
parents: 10905
diff changeset
65 class RangeableFileObject(object):
0
9117c6561b0b Add back links from file revisions to changeset revisions
mpm@selenic.com
parents:
diff changeset
66 """File object wrapper to enable raw range handling.
17507
f25613683e52 spelling: primarily
timeless@mozdev.org
parents: 17489
diff changeset
67 This was implemented primarily for handling range
575
7f5ce4bbdd7b More whitespace cleanups
mpm@selenic.com
parents: 0
diff changeset
68 specifications for file:// urls. This object effectively makes
7f5ce4bbdd7b More whitespace cleanups
mpm@selenic.com
parents: 0
diff changeset
69 a file object look like it consists only of a range of bytes in
0
9117c6561b0b Add back links from file revisions to changeset revisions
mpm@selenic.com
parents:
diff changeset
70 the stream.
575
7f5ce4bbdd7b More whitespace cleanups
mpm@selenic.com
parents: 0
diff changeset
71
0
9117c6561b0b Add back links from file revisions to changeset revisions
mpm@selenic.com
parents:
diff changeset
72 Examples:
575
7f5ce4bbdd7b More whitespace cleanups
mpm@selenic.com
parents: 0
diff changeset
73 # expose 10 bytes, starting at byte position 20, from
0
9117c6561b0b Add back links from file revisions to changeset revisions
mpm@selenic.com
parents:
diff changeset
74 # /etc/aliases.
9117c6561b0b Add back links from file revisions to changeset revisions
mpm@selenic.com
parents:
diff changeset
75 >>> fo = RangeableFileObject(file('/etc/passwd', 'r'), (20,30))
9117c6561b0b Add back links from file revisions to changeset revisions
mpm@selenic.com
parents:
diff changeset
76 # seek seeks within the range (to position 23 in this case)
9117c6561b0b Add back links from file revisions to changeset revisions
mpm@selenic.com
parents:
diff changeset
77 >>> fo.seek(3)
9117c6561b0b Add back links from file revisions to changeset revisions
mpm@selenic.com
parents:
diff changeset
78 # tell tells where your at _within the range_ (position 3 in
9117c6561b0b Add back links from file revisions to changeset revisions
mpm@selenic.com
parents:
diff changeset
79 # this case)
9117c6561b0b Add back links from file revisions to changeset revisions
mpm@selenic.com
parents:
diff changeset
80 >>> fo.tell()
9117c6561b0b Add back links from file revisions to changeset revisions
mpm@selenic.com
parents:
diff changeset
81 # read EOFs if an attempt is made to read past the last
9117c6561b0b Add back links from file revisions to changeset revisions
mpm@selenic.com
parents:
diff changeset
82 # byte in the range. the following will return only 7 bytes.
9117c6561b0b Add back links from file revisions to changeset revisions
mpm@selenic.com
parents:
diff changeset
83 >>> fo.read(30)
9117c6561b0b Add back links from file revisions to changeset revisions
mpm@selenic.com
parents:
diff changeset
84 """
575
7f5ce4bbdd7b More whitespace cleanups
mpm@selenic.com
parents: 0
diff changeset
85
0
9117c6561b0b Add back links from file revisions to changeset revisions
mpm@selenic.com
parents:
diff changeset
86 def __init__(self, fo, rangetup):
9117c6561b0b Add back links from file revisions to changeset revisions
mpm@selenic.com
parents:
diff changeset
87 """Create a RangeableFileObject.
575
7f5ce4bbdd7b More whitespace cleanups
mpm@selenic.com
parents: 0
diff changeset
88 fo -- a file like object. only the read() method need be
7f5ce4bbdd7b More whitespace cleanups
mpm@selenic.com
parents: 0
diff changeset
89 supported but supporting an optimized seek() is
0
9117c6561b0b Add back links from file revisions to changeset revisions
mpm@selenic.com
parents:
diff changeset
90 preferable.
9117c6561b0b Add back links from file revisions to changeset revisions
mpm@selenic.com
parents:
diff changeset
91 rangetup -- a (firstbyte,lastbyte) tuple specifying the range
9117c6561b0b Add back links from file revisions to changeset revisions
mpm@selenic.com
parents:
diff changeset
92 to work over.
9117c6561b0b Add back links from file revisions to changeset revisions
mpm@selenic.com
parents:
diff changeset
93 The file object provided is assumed to be at byte offset 0.
9117c6561b0b Add back links from file revisions to changeset revisions
mpm@selenic.com
parents:
diff changeset
94 """
9117c6561b0b Add back links from file revisions to changeset revisions
mpm@selenic.com
parents:
diff changeset
95 self.fo = fo
9117c6561b0b Add back links from file revisions to changeset revisions
mpm@selenic.com
parents:
diff changeset
96 (self.firstbyte, self.lastbyte) = range_tuple_normalize(rangetup)
9117c6561b0b Add back links from file revisions to changeset revisions
mpm@selenic.com
parents:
diff changeset
97 self.realpos = 0
9117c6561b0b Add back links from file revisions to changeset revisions
mpm@selenic.com
parents:
diff changeset
98 self._do_seek(self.firstbyte)
575
7f5ce4bbdd7b More whitespace cleanups
mpm@selenic.com
parents: 0
diff changeset
99
0
9117c6561b0b Add back links from file revisions to changeset revisions
mpm@selenic.com
parents:
diff changeset
100 def __getattr__(self, name):
9117c6561b0b Add back links from file revisions to changeset revisions
mpm@selenic.com
parents:
diff changeset
101 """This effectively allows us to wrap at the instance level.
9117c6561b0b Add back links from file revisions to changeset revisions
mpm@selenic.com
parents:
diff changeset
102 Any attribute not found in _this_ object will be searched for
9117c6561b0b Add back links from file revisions to changeset revisions
mpm@selenic.com
parents:
diff changeset
103 in self.fo. This includes methods."""
14947
3aa34005a73d byterange: replace uses of hasattr with getattr
Augie Fackler <durin42@gmail.com>
parents: 14764
diff changeset
104 return getattr(self.fo, name)
575
7f5ce4bbdd7b More whitespace cleanups
mpm@selenic.com
parents: 0
diff changeset
105
0
9117c6561b0b Add back links from file revisions to changeset revisions
mpm@selenic.com
parents:
diff changeset
106 def tell(self):
9117c6561b0b Add back links from file revisions to changeset revisions
mpm@selenic.com
parents:
diff changeset
107 """Return the position within the range.
575
7f5ce4bbdd7b More whitespace cleanups
mpm@selenic.com
parents: 0
diff changeset
108 This is different from fo.seek in that position 0 is the
0
9117c6561b0b Add back links from file revisions to changeset revisions
mpm@selenic.com
parents:
diff changeset
109 first byte position of the range tuple. For example, if
9117c6561b0b Add back links from file revisions to changeset revisions
mpm@selenic.com
parents:
diff changeset
110 this object was created with a range tuple of (500,899),
9117c6561b0b Add back links from file revisions to changeset revisions
mpm@selenic.com
parents:
diff changeset
111 tell() will return 0 when at byte position 500 of the file.
9117c6561b0b Add back links from file revisions to changeset revisions
mpm@selenic.com
parents:
diff changeset
112 """
9117c6561b0b Add back links from file revisions to changeset revisions
mpm@selenic.com
parents:
diff changeset
113 return (self.realpos - self.firstbyte)
575
7f5ce4bbdd7b More whitespace cleanups
mpm@selenic.com
parents: 0
diff changeset
114
3673
eb0b4a2d70a9 white space and line break cleanups
Thomas Arendsen Hein <thomas@intevation.de>
parents: 674
diff changeset
115 def seek(self, offset, whence=0):
0
9117c6561b0b Add back links from file revisions to changeset revisions
mpm@selenic.com
parents:
diff changeset
116 """Seek within the byte range.
9117c6561b0b Add back links from file revisions to changeset revisions
mpm@selenic.com
parents:
diff changeset
117 Positioning is identical to that described under tell().
9117c6561b0b Add back links from file revisions to changeset revisions
mpm@selenic.com
parents:
diff changeset
118 """
9117c6561b0b Add back links from file revisions to changeset revisions
mpm@selenic.com
parents:
diff changeset
119 assert whence in (0, 1, 2)
9117c6561b0b Add back links from file revisions to changeset revisions
mpm@selenic.com
parents:
diff changeset
120 if whence == 0: # absolute seek
9117c6561b0b Add back links from file revisions to changeset revisions
mpm@selenic.com
parents:
diff changeset
121 realoffset = self.firstbyte + offset
9117c6561b0b Add back links from file revisions to changeset revisions
mpm@selenic.com
parents:
diff changeset
122 elif whence == 1: # relative seek
9117c6561b0b Add back links from file revisions to changeset revisions
mpm@selenic.com
parents:
diff changeset
123 realoffset = self.realpos + offset
9117c6561b0b Add back links from file revisions to changeset revisions
mpm@selenic.com
parents:
diff changeset
124 elif whence == 2: # absolute from end of file
9117c6561b0b Add back links from file revisions to changeset revisions
mpm@selenic.com
parents:
diff changeset
125 # XXX: are we raising the right Error here?
9117c6561b0b Add back links from file revisions to changeset revisions
mpm@selenic.com
parents:
diff changeset
126 raise IOError('seek from end of file not supported.')
575
7f5ce4bbdd7b More whitespace cleanups
mpm@selenic.com
parents: 0
diff changeset
127
0
9117c6561b0b Add back links from file revisions to changeset revisions
mpm@selenic.com
parents:
diff changeset
128 # do not allow seek past lastbyte in range
9117c6561b0b Add back links from file revisions to changeset revisions
mpm@selenic.com
parents:
diff changeset
129 if self.lastbyte and (realoffset >= self.lastbyte):
9117c6561b0b Add back links from file revisions to changeset revisions
mpm@selenic.com
parents:
diff changeset
130 realoffset = self.lastbyte
575
7f5ce4bbdd7b More whitespace cleanups
mpm@selenic.com
parents: 0
diff changeset
131
0
9117c6561b0b Add back links from file revisions to changeset revisions
mpm@selenic.com
parents:
diff changeset
132 self._do_seek(realoffset - self.realpos)
575
7f5ce4bbdd7b More whitespace cleanups
mpm@selenic.com
parents: 0
diff changeset
133
0
9117c6561b0b Add back links from file revisions to changeset revisions
mpm@selenic.com
parents:
diff changeset
134 def read(self, size=-1):
9117c6561b0b Add back links from file revisions to changeset revisions
mpm@selenic.com
parents:
diff changeset
135 """Read within the range.
9117c6561b0b Add back links from file revisions to changeset revisions
mpm@selenic.com
parents:
diff changeset
136 This method will limit the size read based on the range.
9117c6561b0b Add back links from file revisions to changeset revisions
mpm@selenic.com
parents:
diff changeset
137 """
9117c6561b0b Add back links from file revisions to changeset revisions
mpm@selenic.com
parents:
diff changeset
138 size = self._calc_read_size(size)
9117c6561b0b Add back links from file revisions to changeset revisions
mpm@selenic.com
parents:
diff changeset
139 rslt = self.fo.read(size)
9117c6561b0b Add back links from file revisions to changeset revisions
mpm@selenic.com
parents:
diff changeset
140 self.realpos += len(rslt)
9117c6561b0b Add back links from file revisions to changeset revisions
mpm@selenic.com
parents:
diff changeset
141 return rslt
575
7f5ce4bbdd7b More whitespace cleanups
mpm@selenic.com
parents: 0
diff changeset
142
0
9117c6561b0b Add back links from file revisions to changeset revisions
mpm@selenic.com
parents:
diff changeset
143 def readline(self, size=-1):
9117c6561b0b Add back links from file revisions to changeset revisions
mpm@selenic.com
parents:
diff changeset
144 """Read lines within the range.
9117c6561b0b Add back links from file revisions to changeset revisions
mpm@selenic.com
parents:
diff changeset
145 This method will limit the size read based on the range.
9117c6561b0b Add back links from file revisions to changeset revisions
mpm@selenic.com
parents:
diff changeset
146 """
9117c6561b0b Add back links from file revisions to changeset revisions
mpm@selenic.com
parents:
diff changeset
147 size = self._calc_read_size(size)
9117c6561b0b Add back links from file revisions to changeset revisions
mpm@selenic.com
parents:
diff changeset
148 rslt = self.fo.readline(size)
9117c6561b0b Add back links from file revisions to changeset revisions
mpm@selenic.com
parents:
diff changeset
149 self.realpos += len(rslt)
9117c6561b0b Add back links from file revisions to changeset revisions
mpm@selenic.com
parents:
diff changeset
150 return rslt
575
7f5ce4bbdd7b More whitespace cleanups
mpm@selenic.com
parents: 0
diff changeset
151
0
9117c6561b0b Add back links from file revisions to changeset revisions
mpm@selenic.com
parents:
diff changeset
152 def _calc_read_size(self, size):
9117c6561b0b Add back links from file revisions to changeset revisions
mpm@selenic.com
parents:
diff changeset
153 """Handles calculating the amount of data to read based on
9117c6561b0b Add back links from file revisions to changeset revisions
mpm@selenic.com
parents:
diff changeset
154 the range.
9117c6561b0b Add back links from file revisions to changeset revisions
mpm@selenic.com
parents:
diff changeset
155 """
9117c6561b0b Add back links from file revisions to changeset revisions
mpm@selenic.com
parents:
diff changeset
156 if self.lastbyte:
9117c6561b0b Add back links from file revisions to changeset revisions
mpm@selenic.com
parents:
diff changeset
157 if size > -1:
9117c6561b0b Add back links from file revisions to changeset revisions
mpm@selenic.com
parents:
diff changeset
158 if ((self.realpos + size) >= self.lastbyte):
9117c6561b0b Add back links from file revisions to changeset revisions
mpm@selenic.com
parents:
diff changeset
159 size = (self.lastbyte - self.realpos)
9117c6561b0b Add back links from file revisions to changeset revisions
mpm@selenic.com
parents:
diff changeset
160 else:
9117c6561b0b Add back links from file revisions to changeset revisions
mpm@selenic.com
parents:
diff changeset
161 size = (self.lastbyte - self.realpos)
9117c6561b0b Add back links from file revisions to changeset revisions
mpm@selenic.com
parents:
diff changeset
162 return size
575
7f5ce4bbdd7b More whitespace cleanups
mpm@selenic.com
parents: 0
diff changeset
163
3673
eb0b4a2d70a9 white space and line break cleanups
Thomas Arendsen Hein <thomas@intevation.de>
parents: 674
diff changeset
164 def _do_seek(self, offset):
0
9117c6561b0b Add back links from file revisions to changeset revisions
mpm@selenic.com
parents:
diff changeset
165 """Seek based on whether wrapped object supports seek().
9117c6561b0b Add back links from file revisions to changeset revisions
mpm@selenic.com
parents:
diff changeset
166 offset is relative to the current position (self.realpos).
9117c6561b0b Add back links from file revisions to changeset revisions
mpm@selenic.com
parents:
diff changeset
167 """
9117c6561b0b Add back links from file revisions to changeset revisions
mpm@selenic.com
parents:
diff changeset
168 assert offset >= 0
14947
3aa34005a73d byterange: replace uses of hasattr with getattr
Augie Fackler <durin42@gmail.com>
parents: 14764
diff changeset
169 seek = getattr(self.fo, 'seek', self._poor_mans_seek)
3aa34005a73d byterange: replace uses of hasattr with getattr
Augie Fackler <durin42@gmail.com>
parents: 14764
diff changeset
170 seek(self.realpos + offset)
3673
eb0b4a2d70a9 white space and line break cleanups
Thomas Arendsen Hein <thomas@intevation.de>
parents: 674
diff changeset
171 self.realpos += offset
575
7f5ce4bbdd7b More whitespace cleanups
mpm@selenic.com
parents: 0
diff changeset
172
3673
eb0b4a2d70a9 white space and line break cleanups
Thomas Arendsen Hein <thomas@intevation.de>
parents: 674
diff changeset
173 def _poor_mans_seek(self, offset):
0
9117c6561b0b Add back links from file revisions to changeset revisions
mpm@selenic.com
parents:
diff changeset
174 """Seek by calling the wrapped file objects read() method.
9117c6561b0b Add back links from file revisions to changeset revisions
mpm@selenic.com
parents:
diff changeset
175 This is used for file like objects that do not have native
9117c6561b0b Add back links from file revisions to changeset revisions
mpm@selenic.com
parents:
diff changeset
176 seek support. The wrapped objects read() method is called
9117c6561b0b Add back links from file revisions to changeset revisions
mpm@selenic.com
parents:
diff changeset
177 to manually seek to the desired position.
9117c6561b0b Add back links from file revisions to changeset revisions
mpm@selenic.com
parents:
diff changeset
178 offset -- read this number of bytes from the wrapped
9117c6561b0b Add back links from file revisions to changeset revisions
mpm@selenic.com
parents:
diff changeset
179 file object.
575
7f5ce4bbdd7b More whitespace cleanups
mpm@selenic.com
parents: 0
diff changeset
180 raise RangeError if we encounter EOF before reaching the
0
9117c6561b0b Add back links from file revisions to changeset revisions
mpm@selenic.com
parents:
diff changeset
181 specified offset.
9117c6561b0b Add back links from file revisions to changeset revisions
mpm@selenic.com
parents:
diff changeset
182 """
9117c6561b0b Add back links from file revisions to changeset revisions
mpm@selenic.com
parents:
diff changeset
183 pos = 0
9117c6561b0b Add back links from file revisions to changeset revisions
mpm@selenic.com
parents:
diff changeset
184 bufsize = 1024
9117c6561b0b Add back links from file revisions to changeset revisions
mpm@selenic.com
parents:
diff changeset
185 while pos < offset:
9117c6561b0b Add back links from file revisions to changeset revisions
mpm@selenic.com
parents:
diff changeset
186 if (pos + bufsize) > offset:
9117c6561b0b Add back links from file revisions to changeset revisions
mpm@selenic.com
parents:
diff changeset
187 bufsize = offset - pos
9117c6561b0b Add back links from file revisions to changeset revisions
mpm@selenic.com
parents:
diff changeset
188 buf = self.fo.read(bufsize)
9117c6561b0b Add back links from file revisions to changeset revisions
mpm@selenic.com
parents:
diff changeset
189 if len(buf) != bufsize:
9117c6561b0b Add back links from file revisions to changeset revisions
mpm@selenic.com
parents:
diff changeset
190 raise RangeError('Requested Range Not Satisfiable')
3673
eb0b4a2d70a9 white space and line break cleanups
Thomas Arendsen Hein <thomas@intevation.de>
parents: 674
diff changeset
191 pos += bufsize
0
9117c6561b0b Add back links from file revisions to changeset revisions
mpm@selenic.com
parents:
diff changeset
192
9117c6561b0b Add back links from file revisions to changeset revisions
mpm@selenic.com
parents:
diff changeset
193 class FileRangeHandler(urllib2.FileHandler):
9117c6561b0b Add back links from file revisions to changeset revisions
mpm@selenic.com
parents:
diff changeset
194 """FileHandler subclass that adds Range support.
9117c6561b0b Add back links from file revisions to changeset revisions
mpm@selenic.com
parents:
diff changeset
195 This class handles Range headers exactly like an HTTP
9117c6561b0b Add back links from file revisions to changeset revisions
mpm@selenic.com
parents:
diff changeset
196 server would.
9117c6561b0b Add back links from file revisions to changeset revisions
mpm@selenic.com
parents:
diff changeset
197 """
9117c6561b0b Add back links from file revisions to changeset revisions
mpm@selenic.com
parents:
diff changeset
198 def open_local_file(self, req):
9117c6561b0b Add back links from file revisions to changeset revisions
mpm@selenic.com
parents:
diff changeset
199 import mimetypes
9034
8429062de8d3 compat: use email in favor of mimetools
Alejandro Santos <alejolp@alejolp.com>
parents: 8378
diff changeset
200 import email
0
9117c6561b0b Add back links from file revisions to changeset revisions
mpm@selenic.com
parents:
diff changeset
201 host = req.get_host()
9117c6561b0b Add back links from file revisions to changeset revisions
mpm@selenic.com
parents:
diff changeset
202 file = req.get_selector()
9117c6561b0b Add back links from file revisions to changeset revisions
mpm@selenic.com
parents:
diff changeset
203 localfile = urllib.url2pathname(file)
9117c6561b0b Add back links from file revisions to changeset revisions
mpm@selenic.com
parents:
diff changeset
204 stats = os.stat(localfile)
9117c6561b0b Add back links from file revisions to changeset revisions
mpm@selenic.com
parents:
diff changeset
205 size = stats[stat.ST_SIZE]
8378
59acf64995d2 byterange: fix import error
Martin Geisler <mg@lazybytes.net>
parents: 8366
diff changeset
206 modified = email.Utils.formatdate(stats[stat.ST_MTIME])
0
9117c6561b0b Add back links from file revisions to changeset revisions
mpm@selenic.com
parents:
diff changeset
207 mtype = mimetypes.guess_type(file)[0]
9117c6561b0b Add back links from file revisions to changeset revisions
mpm@selenic.com
parents:
diff changeset
208 if host:
9117c6561b0b Add back links from file revisions to changeset revisions
mpm@selenic.com
parents:
diff changeset
209 host, port = urllib.splitport(host)
9117c6561b0b Add back links from file revisions to changeset revisions
mpm@selenic.com
parents:
diff changeset
210 if port or socket.gethostbyname(host) not in self.get_names():
667
31a9aa890016 A number of minor fixes to problems that pychecker found.
mark.williamson@cl.cam.ac.uk
parents: 575
diff changeset
211 raise urllib2.URLError('file not on local host')
0
9117c6561b0b Add back links from file revisions to changeset revisions
mpm@selenic.com
parents:
diff changeset
212 fo = open(localfile,'rb')
3673
eb0b4a2d70a9 white space and line break cleanups
Thomas Arendsen Hein <thomas@intevation.de>
parents: 674
diff changeset
213 brange = req.headers.get('Range', None)
0
9117c6561b0b Add back links from file revisions to changeset revisions
mpm@selenic.com
parents:
diff changeset
214 brange = range_header_to_tuple(brange)
9117c6561b0b Add back links from file revisions to changeset revisions
mpm@selenic.com
parents:
diff changeset
215 assert brange != ()
9117c6561b0b Add back links from file revisions to changeset revisions
mpm@selenic.com
parents:
diff changeset
216 if brange:
3673
eb0b4a2d70a9 white space and line break cleanups
Thomas Arendsen Hein <thomas@intevation.de>
parents: 674
diff changeset
217 (fb, lb) = brange
eb0b4a2d70a9 white space and line break cleanups
Thomas Arendsen Hein <thomas@intevation.de>
parents: 674
diff changeset
218 if lb == '':
eb0b4a2d70a9 white space and line break cleanups
Thomas Arendsen Hein <thomas@intevation.de>
parents: 674
diff changeset
219 lb = size
0
9117c6561b0b Add back links from file revisions to changeset revisions
mpm@selenic.com
parents:
diff changeset
220 if fb < 0 or fb > size or lb > size:
9117c6561b0b Add back links from file revisions to changeset revisions
mpm@selenic.com
parents:
diff changeset
221 raise RangeError('Requested Range Not Satisfiable')
9117c6561b0b Add back links from file revisions to changeset revisions
mpm@selenic.com
parents:
diff changeset
222 size = (lb - fb)
3673
eb0b4a2d70a9 white space and line break cleanups
Thomas Arendsen Hein <thomas@intevation.de>
parents: 674
diff changeset
223 fo = RangeableFileObject(fo, (fb, lb))
9034
8429062de8d3 compat: use email in favor of mimetools
Alejandro Santos <alejolp@alejolp.com>
parents: 8378
diff changeset
224 headers = email.message_from_string(
5930
c301f15c965a send conservatively capitalized HTTP headers
Dirkjan Ochtman <dirkjan@ochtman.nl>
parents: 3673
diff changeset
225 'Content-Type: %s\nContent-Length: %d\nLast-Modified: %s\n' %
9034
8429062de8d3 compat: use email in favor of mimetools
Alejandro Santos <alejolp@alejolp.com>
parents: 8378
diff changeset
226 (mtype or 'text/plain', size, modified))
0
9117c6561b0b Add back links from file revisions to changeset revisions
mpm@selenic.com
parents:
diff changeset
227 return urllib.addinfourl(fo, headers, 'file:'+file)
9117c6561b0b Add back links from file revisions to changeset revisions
mpm@selenic.com
parents:
diff changeset
228
9117c6561b0b Add back links from file revisions to changeset revisions
mpm@selenic.com
parents:
diff changeset
229
575
7f5ce4bbdd7b More whitespace cleanups
mpm@selenic.com
parents: 0
diff changeset
230 # FTP Range Support
0
9117c6561b0b Add back links from file revisions to changeset revisions
mpm@selenic.com
parents:
diff changeset
231 # Unfortunately, a large amount of base FTP code had to be copied
9117c6561b0b Add back links from file revisions to changeset revisions
mpm@selenic.com
parents:
diff changeset
232 # from urllib and urllib2 in order to insert the FTP REST command.
575
7f5ce4bbdd7b More whitespace cleanups
mpm@selenic.com
parents: 0
diff changeset
233 # Code modifications for range support have been commented as
0
9117c6561b0b Add back links from file revisions to changeset revisions
mpm@selenic.com
parents:
diff changeset
234 # follows:
9117c6561b0b Add back links from file revisions to changeset revisions
mpm@selenic.com
parents:
diff changeset
235 # -- range support modifications start/end here
9117c6561b0b Add back links from file revisions to changeset revisions
mpm@selenic.com
parents:
diff changeset
236
9117c6561b0b Add back links from file revisions to changeset revisions
mpm@selenic.com
parents:
diff changeset
237 from urllib import splitport, splituser, splitpasswd, splitattr, \
9117c6561b0b Add back links from file revisions to changeset revisions
mpm@selenic.com
parents:
diff changeset
238 unquote, addclosehook, addinfourl
9117c6561b0b Add back links from file revisions to changeset revisions
mpm@selenic.com
parents:
diff changeset
239 import ftplib
9117c6561b0b Add back links from file revisions to changeset revisions
mpm@selenic.com
parents:
diff changeset
240 import socket
9117c6561b0b Add back links from file revisions to changeset revisions
mpm@selenic.com
parents:
diff changeset
241 import mimetypes
9034
8429062de8d3 compat: use email in favor of mimetools
Alejandro Santos <alejolp@alejolp.com>
parents: 8378
diff changeset
242 import email
0
9117c6561b0b Add back links from file revisions to changeset revisions
mpm@selenic.com
parents:
diff changeset
243
9117c6561b0b Add back links from file revisions to changeset revisions
mpm@selenic.com
parents:
diff changeset
244 class FTPRangeHandler(urllib2.FTPHandler):
9117c6561b0b Add back links from file revisions to changeset revisions
mpm@selenic.com
parents:
diff changeset
245 def ftp_open(self, req):
9117c6561b0b Add back links from file revisions to changeset revisions
mpm@selenic.com
parents:
diff changeset
246 host = req.get_host()
9117c6561b0b Add back links from file revisions to changeset revisions
mpm@selenic.com
parents:
diff changeset
247 if not host:
7008
8fee8ff13d37 use Exception(args)-style raising consistently (py3k compatibility)
Peter Ruibal <peter.ruibal@intel.com>
parents: 5930
diff changeset
248 raise IOError('ftp error', 'no host given')
0
9117c6561b0b Add back links from file revisions to changeset revisions
mpm@selenic.com
parents:
diff changeset
249 host, port = splitport(host)
9117c6561b0b Add back links from file revisions to changeset revisions
mpm@selenic.com
parents:
diff changeset
250 if port is None:
9117c6561b0b Add back links from file revisions to changeset revisions
mpm@selenic.com
parents:
diff changeset
251 port = ftplib.FTP_PORT
9695
e4211db457c0 byterange: backport fix from upstream
Benoit Boissinot <benoit.boissinot@ens-lyon.org>
parents: 9034
diff changeset
252 else:
e4211db457c0 byterange: backport fix from upstream
Benoit Boissinot <benoit.boissinot@ens-lyon.org>
parents: 9034
diff changeset
253 port = int(port)
0
9117c6561b0b Add back links from file revisions to changeset revisions
mpm@selenic.com
parents:
diff changeset
254
9117c6561b0b Add back links from file revisions to changeset revisions
mpm@selenic.com
parents:
diff changeset
255 # username/password handling
9117c6561b0b Add back links from file revisions to changeset revisions
mpm@selenic.com
parents:
diff changeset
256 user, host = splituser(host)
9117c6561b0b Add back links from file revisions to changeset revisions
mpm@selenic.com
parents:
diff changeset
257 if user:
9117c6561b0b Add back links from file revisions to changeset revisions
mpm@selenic.com
parents:
diff changeset
258 user, passwd = splitpasswd(user)
9117c6561b0b Add back links from file revisions to changeset revisions
mpm@selenic.com
parents:
diff changeset
259 else:
9117c6561b0b Add back links from file revisions to changeset revisions
mpm@selenic.com
parents:
diff changeset
260 passwd = None
9117c6561b0b Add back links from file revisions to changeset revisions
mpm@selenic.com
parents:
diff changeset
261 host = unquote(host)
9117c6561b0b Add back links from file revisions to changeset revisions
mpm@selenic.com
parents:
diff changeset
262 user = unquote(user or '')
9117c6561b0b Add back links from file revisions to changeset revisions
mpm@selenic.com
parents:
diff changeset
263 passwd = unquote(passwd or '')
575
7f5ce4bbdd7b More whitespace cleanups
mpm@selenic.com
parents: 0
diff changeset
264
0
9117c6561b0b Add back links from file revisions to changeset revisions
mpm@selenic.com
parents:
diff changeset
265 try:
9117c6561b0b Add back links from file revisions to changeset revisions
mpm@selenic.com
parents:
diff changeset
266 host = socket.gethostbyname(host)
9117c6561b0b Add back links from file revisions to changeset revisions
mpm@selenic.com
parents:
diff changeset
267 except socket.error, msg:
667
31a9aa890016 A number of minor fixes to problems that pychecker found.
mark.williamson@cl.cam.ac.uk
parents: 575
diff changeset
268 raise urllib2.URLError(msg)
0
9117c6561b0b Add back links from file revisions to changeset revisions
mpm@selenic.com
parents:
diff changeset
269 path, attrs = splitattr(req.get_selector())
9117c6561b0b Add back links from file revisions to changeset revisions
mpm@selenic.com
parents:
diff changeset
270 dirs = path.split('/')
9117c6561b0b Add back links from file revisions to changeset revisions
mpm@selenic.com
parents:
diff changeset
271 dirs = map(unquote, dirs)
9117c6561b0b Add back links from file revisions to changeset revisions
mpm@selenic.com
parents:
diff changeset
272 dirs, file = dirs[:-1], dirs[-1]
9117c6561b0b Add back links from file revisions to changeset revisions
mpm@selenic.com
parents:
diff changeset
273 if dirs and not dirs[0]:
9117c6561b0b Add back links from file revisions to changeset revisions
mpm@selenic.com
parents:
diff changeset
274 dirs = dirs[1:]
9117c6561b0b Add back links from file revisions to changeset revisions
mpm@selenic.com
parents:
diff changeset
275 try:
9117c6561b0b Add back links from file revisions to changeset revisions
mpm@selenic.com
parents:
diff changeset
276 fw = self.connect_ftp(user, passwd, host, port, dirs)
9117c6561b0b Add back links from file revisions to changeset revisions
mpm@selenic.com
parents:
diff changeset
277 type = file and 'I' or 'D'
9117c6561b0b Add back links from file revisions to changeset revisions
mpm@selenic.com
parents:
diff changeset
278 for attr in attrs:
9117c6561b0b Add back links from file revisions to changeset revisions
mpm@selenic.com
parents:
diff changeset
279 attr, value = splitattr(attr)
9117c6561b0b Add back links from file revisions to changeset revisions
mpm@selenic.com
parents:
diff changeset
280 if attr.lower() == 'type' and \
9117c6561b0b Add back links from file revisions to changeset revisions
mpm@selenic.com
parents:
diff changeset
281 value in ('a', 'A', 'i', 'I', 'd', 'D'):
9117c6561b0b Add back links from file revisions to changeset revisions
mpm@selenic.com
parents:
diff changeset
282 type = value.upper()
575
7f5ce4bbdd7b More whitespace cleanups
mpm@selenic.com
parents: 0
diff changeset
283
0
9117c6561b0b Add back links from file revisions to changeset revisions
mpm@selenic.com
parents:
diff changeset
284 # -- range support modifications start here
9117c6561b0b Add back links from file revisions to changeset revisions
mpm@selenic.com
parents:
diff changeset
285 rest = None
3673
eb0b4a2d70a9 white space and line break cleanups
Thomas Arendsen Hein <thomas@intevation.de>
parents: 674
diff changeset
286 range_tup = range_header_to_tuple(req.headers.get('Range', None))
0
9117c6561b0b Add back links from file revisions to changeset revisions
mpm@selenic.com
parents:
diff changeset
287 assert range_tup != ()
9117c6561b0b Add back links from file revisions to changeset revisions
mpm@selenic.com
parents:
diff changeset
288 if range_tup:
3673
eb0b4a2d70a9 white space and line break cleanups
Thomas Arendsen Hein <thomas@intevation.de>
parents: 674
diff changeset
289 (fb, lb) = range_tup
eb0b4a2d70a9 white space and line break cleanups
Thomas Arendsen Hein <thomas@intevation.de>
parents: 674
diff changeset
290 if fb > 0:
eb0b4a2d70a9 white space and line break cleanups
Thomas Arendsen Hein <thomas@intevation.de>
parents: 674
diff changeset
291 rest = fb
0
9117c6561b0b Add back links from file revisions to changeset revisions
mpm@selenic.com
parents:
diff changeset
292 # -- range support modifications end here
575
7f5ce4bbdd7b More whitespace cleanups
mpm@selenic.com
parents: 0
diff changeset
293
0
9117c6561b0b Add back links from file revisions to changeset revisions
mpm@selenic.com
parents:
diff changeset
294 fp, retrlen = fw.retrfile(file, type, rest)
575
7f5ce4bbdd7b More whitespace cleanups
mpm@selenic.com
parents: 0
diff changeset
295
0
9117c6561b0b Add back links from file revisions to changeset revisions
mpm@selenic.com
parents:
diff changeset
296 # -- range support modifications start here
9117c6561b0b Add back links from file revisions to changeset revisions
mpm@selenic.com
parents:
diff changeset
297 if range_tup:
3673
eb0b4a2d70a9 white space and line break cleanups
Thomas Arendsen Hein <thomas@intevation.de>
parents: 674
diff changeset
298 (fb, lb) = range_tup
575
7f5ce4bbdd7b More whitespace cleanups
mpm@selenic.com
parents: 0
diff changeset
299 if lb == '':
0
9117c6561b0b Add back links from file revisions to changeset revisions
mpm@selenic.com
parents:
diff changeset
300 if retrlen is None or retrlen == 0:
10282
08a0f04b56bd many, many trivial check-code fixups
Matt Mackall <mpm@selenic.com>
parents: 9695
diff changeset
301 raise RangeError('Requested Range Not Satisfiable due'
08a0f04b56bd many, many trivial check-code fixups
Matt Mackall <mpm@selenic.com>
parents: 9695
diff changeset
302 ' to unobtainable file length.')
0
9117c6561b0b Add back links from file revisions to changeset revisions
mpm@selenic.com
parents:
diff changeset
303 lb = retrlen
9117c6561b0b Add back links from file revisions to changeset revisions
mpm@selenic.com
parents:
diff changeset
304 retrlen = lb - fb
9117c6561b0b Add back links from file revisions to changeset revisions
mpm@selenic.com
parents:
diff changeset
305 if retrlen < 0:
9117c6561b0b Add back links from file revisions to changeset revisions
mpm@selenic.com
parents:
diff changeset
306 # beginning of range is larger than file
9117c6561b0b Add back links from file revisions to changeset revisions
mpm@selenic.com
parents:
diff changeset
307 raise RangeError('Requested Range Not Satisfiable')
9117c6561b0b Add back links from file revisions to changeset revisions
mpm@selenic.com
parents:
diff changeset
308 else:
9117c6561b0b Add back links from file revisions to changeset revisions
mpm@selenic.com
parents:
diff changeset
309 retrlen = lb - fb
3673
eb0b4a2d70a9 white space and line break cleanups
Thomas Arendsen Hein <thomas@intevation.de>
parents: 674
diff changeset
310 fp = RangeableFileObject(fp, (0, retrlen))
0
9117c6561b0b Add back links from file revisions to changeset revisions
mpm@selenic.com
parents:
diff changeset
311 # -- range support modifications end here
575
7f5ce4bbdd7b More whitespace cleanups
mpm@selenic.com
parents: 0
diff changeset
312
0
9117c6561b0b Add back links from file revisions to changeset revisions
mpm@selenic.com
parents:
diff changeset
313 headers = ""
9117c6561b0b Add back links from file revisions to changeset revisions
mpm@selenic.com
parents:
diff changeset
314 mtype = mimetypes.guess_type(req.get_full_url())[0]
9117c6561b0b Add back links from file revisions to changeset revisions
mpm@selenic.com
parents:
diff changeset
315 if mtype:
9117c6561b0b Add back links from file revisions to changeset revisions
mpm@selenic.com
parents:
diff changeset
316 headers += "Content-Type: %s\n" % mtype
9117c6561b0b Add back links from file revisions to changeset revisions
mpm@selenic.com
parents:
diff changeset
317 if retrlen is not None and retrlen >= 0:
9117c6561b0b Add back links from file revisions to changeset revisions
mpm@selenic.com
parents:
diff changeset
318 headers += "Content-Length: %d\n" % retrlen
9034
8429062de8d3 compat: use email in favor of mimetools
Alejandro Santos <alejolp@alejolp.com>
parents: 8378
diff changeset
319 headers = email.message_from_string(headers)
0
9117c6561b0b Add back links from file revisions to changeset revisions
mpm@selenic.com
parents:
diff changeset
320 return addinfourl(fp, headers, req.get_full_url())
9117c6561b0b Add back links from file revisions to changeset revisions
mpm@selenic.com
parents:
diff changeset
321 except ftplib.all_errors, msg:
18586
40f9472f5737 byterange: remove old two-arg raise trick
Augie Fackler <raf@durin42.com>
parents: 17537
diff changeset
322 raise IOError('ftp error', msg)
0
9117c6561b0b Add back links from file revisions to changeset revisions
mpm@selenic.com
parents:
diff changeset
323
9117c6561b0b Add back links from file revisions to changeset revisions
mpm@selenic.com
parents:
diff changeset
324 def connect_ftp(self, user, passwd, host, port, dirs):
9117c6561b0b Add back links from file revisions to changeset revisions
mpm@selenic.com
parents:
diff changeset
325 fw = ftpwrapper(user, passwd, host, port, dirs)
9117c6561b0b Add back links from file revisions to changeset revisions
mpm@selenic.com
parents:
diff changeset
326 return fw
9117c6561b0b Add back links from file revisions to changeset revisions
mpm@selenic.com
parents:
diff changeset
327
9117c6561b0b Add back links from file revisions to changeset revisions
mpm@selenic.com
parents:
diff changeset
328 class ftpwrapper(urllib.ftpwrapper):
9117c6561b0b Add back links from file revisions to changeset revisions
mpm@selenic.com
parents:
diff changeset
329 # range support note:
9117c6561b0b Add back links from file revisions to changeset revisions
mpm@selenic.com
parents:
diff changeset
330 # this ftpwrapper code is copied directly from
9117c6561b0b Add back links from file revisions to changeset revisions
mpm@selenic.com
parents:
diff changeset
331 # urllib. The only enhancement is to add the rest
9117c6561b0b Add back links from file revisions to changeset revisions
mpm@selenic.com
parents:
diff changeset
332 # argument and pass it on to ftp.ntransfercmd
9117c6561b0b Add back links from file revisions to changeset revisions
mpm@selenic.com
parents:
diff changeset
333 def retrfile(self, file, type, rest=None):
9117c6561b0b Add back links from file revisions to changeset revisions
mpm@selenic.com
parents:
diff changeset
334 self.endtransfer()
3673
eb0b4a2d70a9 white space and line break cleanups
Thomas Arendsen Hein <thomas@intevation.de>
parents: 674
diff changeset
335 if type in ('d', 'D'):
eb0b4a2d70a9 white space and line break cleanups
Thomas Arendsen Hein <thomas@intevation.de>
parents: 674
diff changeset
336 cmd = 'TYPE A'
eb0b4a2d70a9 white space and line break cleanups
Thomas Arendsen Hein <thomas@intevation.de>
parents: 674
diff changeset
337 isdir = 1
eb0b4a2d70a9 white space and line break cleanups
Thomas Arendsen Hein <thomas@intevation.de>
parents: 674
diff changeset
338 else:
eb0b4a2d70a9 white space and line break cleanups
Thomas Arendsen Hein <thomas@intevation.de>
parents: 674
diff changeset
339 cmd = 'TYPE ' + type
eb0b4a2d70a9 white space and line break cleanups
Thomas Arendsen Hein <thomas@intevation.de>
parents: 674
diff changeset
340 isdir = 0
0
9117c6561b0b Add back links from file revisions to changeset revisions
mpm@selenic.com
parents:
diff changeset
341 try:
9117c6561b0b Add back links from file revisions to changeset revisions
mpm@selenic.com
parents:
diff changeset
342 self.ftp.voidcmd(cmd)
9117c6561b0b Add back links from file revisions to changeset revisions
mpm@selenic.com
parents:
diff changeset
343 except ftplib.all_errors:
9117c6561b0b Add back links from file revisions to changeset revisions
mpm@selenic.com
parents:
diff changeset
344 self.init()
9117c6561b0b Add back links from file revisions to changeset revisions
mpm@selenic.com
parents:
diff changeset
345 self.ftp.voidcmd(cmd)
9117c6561b0b Add back links from file revisions to changeset revisions
mpm@selenic.com
parents:
diff changeset
346 conn = None
9117c6561b0b Add back links from file revisions to changeset revisions
mpm@selenic.com
parents:
diff changeset
347 if file and not isdir:
9117c6561b0b Add back links from file revisions to changeset revisions
mpm@selenic.com
parents:
diff changeset
348 # Use nlst to see if the file exists at all
9117c6561b0b Add back links from file revisions to changeset revisions
mpm@selenic.com
parents:
diff changeset
349 try:
9117c6561b0b Add back links from file revisions to changeset revisions
mpm@selenic.com
parents:
diff changeset
350 self.ftp.nlst(file)
9117c6561b0b Add back links from file revisions to changeset revisions
mpm@selenic.com
parents:
diff changeset
351 except ftplib.error_perm, reason:
18586
40f9472f5737 byterange: remove old two-arg raise trick
Augie Fackler <raf@durin42.com>
parents: 17537
diff changeset
352 raise IOError('ftp error', reason)
0
9117c6561b0b Add back links from file revisions to changeset revisions
mpm@selenic.com
parents:
diff changeset
353 # Restore the transfer mode!
9117c6561b0b Add back links from file revisions to changeset revisions
mpm@selenic.com
parents:
diff changeset
354 self.ftp.voidcmd(cmd)
9117c6561b0b Add back links from file revisions to changeset revisions
mpm@selenic.com
parents:
diff changeset
355 # Try to retrieve as a file
9117c6561b0b Add back links from file revisions to changeset revisions
mpm@selenic.com
parents:
diff changeset
356 try:
9117c6561b0b Add back links from file revisions to changeset revisions
mpm@selenic.com
parents:
diff changeset
357 cmd = 'RETR ' + file
9117c6561b0b Add back links from file revisions to changeset revisions
mpm@selenic.com
parents:
diff changeset
358 conn = self.ftp.ntransfercmd(cmd, rest)
9117c6561b0b Add back links from file revisions to changeset revisions
mpm@selenic.com
parents:
diff changeset
359 except ftplib.error_perm, reason:
674
6513ba7d858a Make consistent use of str.startswith() in conditionals.
chad.netzer@gmail.com
parents: 667
diff changeset
360 if str(reason).startswith('501'):
0
9117c6561b0b Add back links from file revisions to changeset revisions
mpm@selenic.com
parents:
diff changeset
361 # workaround for REST not supported error
9117c6561b0b Add back links from file revisions to changeset revisions
mpm@selenic.com
parents:
diff changeset
362 fp, retrlen = self.retrfile(file, type)
9117c6561b0b Add back links from file revisions to changeset revisions
mpm@selenic.com
parents:
diff changeset
363 fp = RangeableFileObject(fp, (rest,''))
9117c6561b0b Add back links from file revisions to changeset revisions
mpm@selenic.com
parents:
diff changeset
364 return (fp, retrlen)
674
6513ba7d858a Make consistent use of str.startswith() in conditionals.
chad.netzer@gmail.com
parents: 667
diff changeset
365 elif not str(reason).startswith('550'):
18586
40f9472f5737 byterange: remove old two-arg raise trick
Augie Fackler <raf@durin42.com>
parents: 17537
diff changeset
366 raise IOError('ftp error', reason)
0
9117c6561b0b Add back links from file revisions to changeset revisions
mpm@selenic.com
parents:
diff changeset
367 if not conn:
9117c6561b0b Add back links from file revisions to changeset revisions
mpm@selenic.com
parents:
diff changeset
368 # Set transfer mode to ASCII!
9117c6561b0b Add back links from file revisions to changeset revisions
mpm@selenic.com
parents:
diff changeset
369 self.ftp.voidcmd('TYPE A')
9117c6561b0b Add back links from file revisions to changeset revisions
mpm@selenic.com
parents:
diff changeset
370 # Try a directory listing
3673
eb0b4a2d70a9 white space and line break cleanups
Thomas Arendsen Hein <thomas@intevation.de>
parents: 674
diff changeset
371 if file:
eb0b4a2d70a9 white space and line break cleanups
Thomas Arendsen Hein <thomas@intevation.de>
parents: 674
diff changeset
372 cmd = 'LIST ' + file
eb0b4a2d70a9 white space and line break cleanups
Thomas Arendsen Hein <thomas@intevation.de>
parents: 674
diff changeset
373 else:
eb0b4a2d70a9 white space and line break cleanups
Thomas Arendsen Hein <thomas@intevation.de>
parents: 674
diff changeset
374 cmd = 'LIST'
0
9117c6561b0b Add back links from file revisions to changeset revisions
mpm@selenic.com
parents:
diff changeset
375 conn = self.ftp.ntransfercmd(cmd)
9117c6561b0b Add back links from file revisions to changeset revisions
mpm@selenic.com
parents:
diff changeset
376 self.busy = 1
9117c6561b0b Add back links from file revisions to changeset revisions
mpm@selenic.com
parents:
diff changeset
377 # Pass back both a suitably decorated object and a retrieval length
9117c6561b0b Add back links from file revisions to changeset revisions
mpm@selenic.com
parents:
diff changeset
378 return (addclosehook(conn[0].makefile('rb'),
9117c6561b0b Add back links from file revisions to changeset revisions
mpm@selenic.com
parents:
diff changeset
379 self.endtransfer), conn[1])
9117c6561b0b Add back links from file revisions to changeset revisions
mpm@selenic.com
parents:
diff changeset
380
9117c6561b0b Add back links from file revisions to changeset revisions
mpm@selenic.com
parents:
diff changeset
381
9117c6561b0b Add back links from file revisions to changeset revisions
mpm@selenic.com
parents:
diff changeset
382 ####################################################################
9117c6561b0b Add back links from file revisions to changeset revisions
mpm@selenic.com
parents:
diff changeset
383 # Range Tuple Functions
9117c6561b0b Add back links from file revisions to changeset revisions
mpm@selenic.com
parents:
diff changeset
384 # XXX: These range tuple functions might go better in a class.
9117c6561b0b Add back links from file revisions to changeset revisions
mpm@selenic.com
parents:
diff changeset
385
9117c6561b0b Add back links from file revisions to changeset revisions
mpm@selenic.com
parents:
diff changeset
386 _rangere = None
9117c6561b0b Add back links from file revisions to changeset revisions
mpm@selenic.com
parents:
diff changeset
387 def range_header_to_tuple(range_header):
9117c6561b0b Add back links from file revisions to changeset revisions
mpm@selenic.com
parents:
diff changeset
388 """Get a (firstbyte,lastbyte) tuple from a Range header value.
575
7f5ce4bbdd7b More whitespace cleanups
mpm@selenic.com
parents: 0
diff changeset
389
0
9117c6561b0b Add back links from file revisions to changeset revisions
mpm@selenic.com
parents:
diff changeset
390 Range headers have the form "bytes=<firstbyte>-<lastbyte>". This
9117c6561b0b Add back links from file revisions to changeset revisions
mpm@selenic.com
parents:
diff changeset
391 function pulls the firstbyte and lastbyte values and returns
9117c6561b0b Add back links from file revisions to changeset revisions
mpm@selenic.com
parents:
diff changeset
392 a (firstbyte,lastbyte) tuple. If lastbyte is not specified in
9117c6561b0b Add back links from file revisions to changeset revisions
mpm@selenic.com
parents:
diff changeset
393 the header value, it is returned as an empty string in the
9117c6561b0b Add back links from file revisions to changeset revisions
mpm@selenic.com
parents:
diff changeset
394 tuple.
575
7f5ce4bbdd7b More whitespace cleanups
mpm@selenic.com
parents: 0
diff changeset
395
0
9117c6561b0b Add back links from file revisions to changeset revisions
mpm@selenic.com
parents:
diff changeset
396 Return None if range_header is None
575
7f5ce4bbdd7b More whitespace cleanups
mpm@selenic.com
parents: 0
diff changeset
397 Return () if range_header does not conform to the range spec
0
9117c6561b0b Add back links from file revisions to changeset revisions
mpm@selenic.com
parents:
diff changeset
398 pattern.
575
7f5ce4bbdd7b More whitespace cleanups
mpm@selenic.com
parents: 0
diff changeset
399
0
9117c6561b0b Add back links from file revisions to changeset revisions
mpm@selenic.com
parents:
diff changeset
400 """
9117c6561b0b Add back links from file revisions to changeset revisions
mpm@selenic.com
parents:
diff changeset
401 global _rangere
3673
eb0b4a2d70a9 white space and line break cleanups
Thomas Arendsen Hein <thomas@intevation.de>
parents: 674
diff changeset
402 if range_header is None:
eb0b4a2d70a9 white space and line break cleanups
Thomas Arendsen Hein <thomas@intevation.de>
parents: 674
diff changeset
403 return None
0
9117c6561b0b Add back links from file revisions to changeset revisions
mpm@selenic.com
parents:
diff changeset
404 if _rangere is None:
9117c6561b0b Add back links from file revisions to changeset revisions
mpm@selenic.com
parents:
diff changeset
405 import re
9117c6561b0b Add back links from file revisions to changeset revisions
mpm@selenic.com
parents:
diff changeset
406 _rangere = re.compile(r'^bytes=(\d{1,})-(\d*)')
9117c6561b0b Add back links from file revisions to changeset revisions
mpm@selenic.com
parents:
diff changeset
407 match = _rangere.match(range_header)
575
7f5ce4bbdd7b More whitespace cleanups
mpm@selenic.com
parents: 0
diff changeset
408 if match:
3673
eb0b4a2d70a9 white space and line break cleanups
Thomas Arendsen Hein <thomas@intevation.de>
parents: 674
diff changeset
409 tup = range_tuple_normalize(match.group(1, 2))
575
7f5ce4bbdd7b More whitespace cleanups
mpm@selenic.com
parents: 0
diff changeset
410 if tup and tup[1]:
3673
eb0b4a2d70a9 white space and line break cleanups
Thomas Arendsen Hein <thomas@intevation.de>
parents: 674
diff changeset
411 tup = (tup[0], tup[1]+1)
0
9117c6561b0b Add back links from file revisions to changeset revisions
mpm@selenic.com
parents:
diff changeset
412 return tup
9117c6561b0b Add back links from file revisions to changeset revisions
mpm@selenic.com
parents:
diff changeset
413 return ()
9117c6561b0b Add back links from file revisions to changeset revisions
mpm@selenic.com
parents:
diff changeset
414
9117c6561b0b Add back links from file revisions to changeset revisions
mpm@selenic.com
parents:
diff changeset
415 def range_tuple_to_header(range_tup):
9117c6561b0b Add back links from file revisions to changeset revisions
mpm@selenic.com
parents:
diff changeset
416 """Convert a range tuple to a Range header value.
9117c6561b0b Add back links from file revisions to changeset revisions
mpm@selenic.com
parents:
diff changeset
417 Return a string of the form "bytes=<firstbyte>-<lastbyte>" or None
9117c6561b0b Add back links from file revisions to changeset revisions
mpm@selenic.com
parents:
diff changeset
418 if no range is needed.
9117c6561b0b Add back links from file revisions to changeset revisions
mpm@selenic.com
parents:
diff changeset
419 """
3673
eb0b4a2d70a9 white space and line break cleanups
Thomas Arendsen Hein <thomas@intevation.de>
parents: 674
diff changeset
420 if range_tup is None:
eb0b4a2d70a9 white space and line break cleanups
Thomas Arendsen Hein <thomas@intevation.de>
parents: 674
diff changeset
421 return None
0
9117c6561b0b Add back links from file revisions to changeset revisions
mpm@selenic.com
parents:
diff changeset
422 range_tup = range_tuple_normalize(range_tup)
9117c6561b0b Add back links from file revisions to changeset revisions
mpm@selenic.com
parents:
diff changeset
423 if range_tup:
575
7f5ce4bbdd7b More whitespace cleanups
mpm@selenic.com
parents: 0
diff changeset
424 if range_tup[1]:
3673
eb0b4a2d70a9 white space and line break cleanups
Thomas Arendsen Hein <thomas@intevation.de>
parents: 674
diff changeset
425 range_tup = (range_tup[0], range_tup[1] - 1)
0
9117c6561b0b Add back links from file revisions to changeset revisions
mpm@selenic.com
parents:
diff changeset
426 return 'bytes=%s-%s' % range_tup
575
7f5ce4bbdd7b More whitespace cleanups
mpm@selenic.com
parents: 0
diff changeset
427
0
9117c6561b0b Add back links from file revisions to changeset revisions
mpm@selenic.com
parents:
diff changeset
428 def range_tuple_normalize(range_tup):
9117c6561b0b Add back links from file revisions to changeset revisions
mpm@selenic.com
parents:
diff changeset
429 """Normalize a (first_byte,last_byte) range tuple.
9117c6561b0b Add back links from file revisions to changeset revisions
mpm@selenic.com
parents:
diff changeset
430 Return a tuple whose first element is guaranteed to be an int
575
7f5ce4bbdd7b More whitespace cleanups
mpm@selenic.com
parents: 0
diff changeset
431 and whose second element will be '' (meaning: the last byte) or
0
9117c6561b0b Add back links from file revisions to changeset revisions
mpm@selenic.com
parents:
diff changeset
432 an int. Finally, return None if the normalized tuple == (0,'')
17489
fddf769677f5 spelling: equivalent
timeless@mozdev.org
parents: 15782
diff changeset
433 as that is equivalent to retrieving the entire file.
0
9117c6561b0b Add back links from file revisions to changeset revisions
mpm@selenic.com
parents:
diff changeset
434 """
3673
eb0b4a2d70a9 white space and line break cleanups
Thomas Arendsen Hein <thomas@intevation.de>
parents: 674
diff changeset
435 if range_tup is None:
eb0b4a2d70a9 white space and line break cleanups
Thomas Arendsen Hein <thomas@intevation.de>
parents: 674
diff changeset
436 return None
0
9117c6561b0b Add back links from file revisions to changeset revisions
mpm@selenic.com
parents:
diff changeset
437 # handle first byte
9117c6561b0b Add back links from file revisions to changeset revisions
mpm@selenic.com
parents:
diff changeset
438 fb = range_tup[0]
3673
eb0b4a2d70a9 white space and line break cleanups
Thomas Arendsen Hein <thomas@intevation.de>
parents: 674
diff changeset
439 if fb in (None, ''):
eb0b4a2d70a9 white space and line break cleanups
Thomas Arendsen Hein <thomas@intevation.de>
parents: 674
diff changeset
440 fb = 0
eb0b4a2d70a9 white space and line break cleanups
Thomas Arendsen Hein <thomas@intevation.de>
parents: 674
diff changeset
441 else:
eb0b4a2d70a9 white space and line break cleanups
Thomas Arendsen Hein <thomas@intevation.de>
parents: 674
diff changeset
442 fb = int(fb)
0
9117c6561b0b Add back links from file revisions to changeset revisions
mpm@selenic.com
parents:
diff changeset
443 # handle last byte
3673
eb0b4a2d70a9 white space and line break cleanups
Thomas Arendsen Hein <thomas@intevation.de>
parents: 674
diff changeset
444 try:
eb0b4a2d70a9 white space and line break cleanups
Thomas Arendsen Hein <thomas@intevation.de>
parents: 674
diff changeset
445 lb = range_tup[1]
eb0b4a2d70a9 white space and line break cleanups
Thomas Arendsen Hein <thomas@intevation.de>
parents: 674
diff changeset
446 except IndexError:
eb0b4a2d70a9 white space and line break cleanups
Thomas Arendsen Hein <thomas@intevation.de>
parents: 674
diff changeset
447 lb = ''
575
7f5ce4bbdd7b More whitespace cleanups
mpm@selenic.com
parents: 0
diff changeset
448 else:
3673
eb0b4a2d70a9 white space and line break cleanups
Thomas Arendsen Hein <thomas@intevation.de>
parents: 674
diff changeset
449 if lb is None:
eb0b4a2d70a9 white space and line break cleanups
Thomas Arendsen Hein <thomas@intevation.de>
parents: 674
diff changeset
450 lb = ''
eb0b4a2d70a9 white space and line break cleanups
Thomas Arendsen Hein <thomas@intevation.de>
parents: 674
diff changeset
451 elif lb != '':
eb0b4a2d70a9 white space and line break cleanups
Thomas Arendsen Hein <thomas@intevation.de>
parents: 674
diff changeset
452 lb = int(lb)
0
9117c6561b0b Add back links from file revisions to changeset revisions
mpm@selenic.com
parents:
diff changeset
453 # check if range is over the entire file
3673
eb0b4a2d70a9 white space and line break cleanups
Thomas Arendsen Hein <thomas@intevation.de>
parents: 674
diff changeset
454 if (fb, lb) == (0, ''):
eb0b4a2d70a9 white space and line break cleanups
Thomas Arendsen Hein <thomas@intevation.de>
parents: 674
diff changeset
455 return None
0
9117c6561b0b Add back links from file revisions to changeset revisions
mpm@selenic.com
parents:
diff changeset
456 # check that the range is valid
3673
eb0b4a2d70a9 white space and line break cleanups
Thomas Arendsen Hein <thomas@intevation.de>
parents: 674
diff changeset
457 if lb < fb:
eb0b4a2d70a9 white space and line break cleanups
Thomas Arendsen Hein <thomas@intevation.de>
parents: 674
diff changeset
458 raise RangeError('Invalid byte range: %s-%s' % (fb, lb))
eb0b4a2d70a9 white space and line break cleanups
Thomas Arendsen Hein <thomas@intevation.de>
parents: 674
diff changeset
459 return (fb, lb)