Mercurial > hg
annotate mercurial/byterange.py @ 14605:9f1139cf5c76
hg: rearrange peer scheme lookup
There is now only peer scheme lookup. Repository lookup goes through
peer scheme lookup. When peer and repo types are finally separated,
repo lookup will use peer.local() to get a repository object.
The underbar is dropped so that extensions can patch the table.
author | Matt Mackall <mpm@selenic.com> |
---|---|
date | Mon, 13 Jun 2011 14:53:23 -0500 |
parents | 13a1b2fb7ef2 |
children | a7d5816087a9 |
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 |
575 | 12 # License along with this library; if not, write to the |
13 # Free Software Foundation, Inc., | |
14 # 59 Temple Place, Suite 330, | |
0
9117c6561b0b
Add back links from file revisions to changeset revisions
mpm@selenic.com
parents:
diff
changeset
|
15 # Boston, MA 02111-1307 USA |
9117c6561b0b
Add back links from file revisions to changeset revisions
mpm@selenic.com
parents:
diff
changeset
|
16 |
9117c6561b0b
Add back links from file revisions to changeset revisions
mpm@selenic.com
parents:
diff
changeset
|
17 # 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
|
18 # Copyright 2002-2004 Michael D. Stenner, Ryan Tomayko |
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 # $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
|
21 |
9117c6561b0b
Add back links from file revisions to changeset revisions
mpm@selenic.com
parents:
diff
changeset
|
22 import os |
9117c6561b0b
Add back links from file revisions to changeset revisions
mpm@selenic.com
parents:
diff
changeset
|
23 import stat |
9117c6561b0b
Add back links from file revisions to changeset revisions
mpm@selenic.com
parents:
diff
changeset
|
24 import urllib |
9117c6561b0b
Add back links from file revisions to changeset revisions
mpm@selenic.com
parents:
diff
changeset
|
25 import urllib2 |
8378
59acf64995d2
byterange: fix import error
Martin Geisler <mg@lazybytes.net>
parents:
8366
diff
changeset
|
26 import email.Utils |
0
9117c6561b0b
Add back links from file revisions to changeset revisions
mpm@selenic.com
parents:
diff
changeset
|
27 |
9117c6561b0b
Add back links from file revisions to changeset revisions
mpm@selenic.com
parents:
diff
changeset
|
28 class RangeError(IOError): |
9117c6561b0b
Add back links from file revisions to changeset revisions
mpm@selenic.com
parents:
diff
changeset
|
29 """Error raised when an unsatisfiable range is requested.""" |
9117c6561b0b
Add back links from file revisions to changeset revisions
mpm@selenic.com
parents:
diff
changeset
|
30 pass |
575 | 31 |
0
9117c6561b0b
Add back links from file revisions to changeset revisions
mpm@selenic.com
parents:
diff
changeset
|
32 class HTTPRangeHandler(urllib2.BaseHandler): |
9117c6561b0b
Add back links from file revisions to changeset revisions
mpm@selenic.com
parents:
diff
changeset
|
33 """Handler that enables HTTP Range headers. |
575 | 34 |
0
9117c6561b0b
Add back links from file revisions to changeset revisions
mpm@selenic.com
parents:
diff
changeset
|
35 This was extremely simple. The Range header is a HTTP feature to |
575 | 36 begin with so all this class does is tell urllib2 that the |
37 "206 Partial Content" reponse from the HTTP server is what we | |
0
9117c6561b0b
Add back links from file revisions to changeset revisions
mpm@selenic.com
parents:
diff
changeset
|
38 expected. |
575 | 39 |
0
9117c6561b0b
Add back links from file revisions to changeset revisions
mpm@selenic.com
parents:
diff
changeset
|
40 Example: |
9117c6561b0b
Add back links from file revisions to changeset revisions
mpm@selenic.com
parents:
diff
changeset
|
41 import urllib2 |
9117c6561b0b
Add back links from file revisions to changeset revisions
mpm@selenic.com
parents:
diff
changeset
|
42 import byterange |
575 | 43 |
0
9117c6561b0b
Add back links from file revisions to changeset revisions
mpm@selenic.com
parents:
diff
changeset
|
44 range_handler = range.HTTPRangeHandler() |
9117c6561b0b
Add back links from file revisions to changeset revisions
mpm@selenic.com
parents:
diff
changeset
|
45 opener = urllib2.build_opener(range_handler) |
575 | 46 |
0
9117c6561b0b
Add back links from file revisions to changeset revisions
mpm@selenic.com
parents:
diff
changeset
|
47 # install it |
9117c6561b0b
Add back links from file revisions to changeset revisions
mpm@selenic.com
parents:
diff
changeset
|
48 urllib2.install_opener(opener) |
575 | 49 |
0
9117c6561b0b
Add back links from file revisions to changeset revisions
mpm@selenic.com
parents:
diff
changeset
|
50 # create Request and set Range header |
9117c6561b0b
Add back links from file revisions to changeset revisions
mpm@selenic.com
parents:
diff
changeset
|
51 req = urllib2.Request('http://www.python.org/') |
9117c6561b0b
Add back links from file revisions to changeset revisions
mpm@selenic.com
parents:
diff
changeset
|
52 req.header['Range'] = 'bytes=30-50' |
9117c6561b0b
Add back links from file revisions to changeset revisions
mpm@selenic.com
parents:
diff
changeset
|
53 f = urllib2.urlopen(req) |
9117c6561b0b
Add back links from file revisions to changeset revisions
mpm@selenic.com
parents:
diff
changeset
|
54 """ |
575 | 55 |
0
9117c6561b0b
Add back links from file revisions to changeset revisions
mpm@selenic.com
parents:
diff
changeset
|
56 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
|
57 # 206 Partial Content Response |
9117c6561b0b
Add back links from file revisions to changeset revisions
mpm@selenic.com
parents:
diff
changeset
|
58 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
|
59 r.code = code |
9117c6561b0b
Add back links from file revisions to changeset revisions
mpm@selenic.com
parents:
diff
changeset
|
60 r.msg = msg |
9117c6561b0b
Add back links from file revisions to changeset revisions
mpm@selenic.com
parents:
diff
changeset
|
61 return r |
575 | 62 |
0
9117c6561b0b
Add back links from file revisions to changeset revisions
mpm@selenic.com
parents:
diff
changeset
|
63 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
|
64 # HTTP's Range Not Satisfiable error |
9117c6561b0b
Add back links from file revisions to changeset revisions
mpm@selenic.com
parents:
diff
changeset
|
65 raise RangeError('Requested Range Not Satisfiable') |
9117c6561b0b
Add back links from file revisions to changeset revisions
mpm@selenic.com
parents:
diff
changeset
|
66 |
9117c6561b0b
Add back links from file revisions to changeset revisions
mpm@selenic.com
parents:
diff
changeset
|
67 class RangeableFileObject: |
9117c6561b0b
Add back links from file revisions to changeset revisions
mpm@selenic.com
parents:
diff
changeset
|
68 """File object wrapper to enable raw range handling. |
575 | 69 This was implemented primarilary for handling range |
70 specifications for file:// urls. This object effectively makes | |
71 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
|
72 the stream. |
575 | 73 |
0
9117c6561b0b
Add back links from file revisions to changeset revisions
mpm@selenic.com
parents:
diff
changeset
|
74 Examples: |
575 | 75 # 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
|
76 # /etc/aliases. |
9117c6561b0b
Add back links from file revisions to changeset revisions
mpm@selenic.com
parents:
diff
changeset
|
77 >>> fo = RangeableFileObject(file('/etc/passwd', 'r'), (20,30)) |
9117c6561b0b
Add back links from file revisions to changeset revisions
mpm@selenic.com
parents:
diff
changeset
|
78 # 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
|
79 >>> fo.seek(3) |
9117c6561b0b
Add back links from file revisions to changeset revisions
mpm@selenic.com
parents:
diff
changeset
|
80 # 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
|
81 # this case) |
9117c6561b0b
Add back links from file revisions to changeset revisions
mpm@selenic.com
parents:
diff
changeset
|
82 >>> fo.tell() |
9117c6561b0b
Add back links from file revisions to changeset revisions
mpm@selenic.com
parents:
diff
changeset
|
83 # 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
|
84 # 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
|
85 >>> fo.read(30) |
9117c6561b0b
Add back links from file revisions to changeset revisions
mpm@selenic.com
parents:
diff
changeset
|
86 """ |
575 | 87 |
0
9117c6561b0b
Add back links from file revisions to changeset revisions
mpm@selenic.com
parents:
diff
changeset
|
88 def __init__(self, fo, rangetup): |
9117c6561b0b
Add back links from file revisions to changeset revisions
mpm@selenic.com
parents:
diff
changeset
|
89 """Create a RangeableFileObject. |
575 | 90 fo -- a file like object. only the read() method need be |
91 supported but supporting an optimized seek() is | |
0
9117c6561b0b
Add back links from file revisions to changeset revisions
mpm@selenic.com
parents:
diff
changeset
|
92 preferable. |
9117c6561b0b
Add back links from file revisions to changeset revisions
mpm@selenic.com
parents:
diff
changeset
|
93 rangetup -- a (firstbyte,lastbyte) tuple specifying the range |
9117c6561b0b
Add back links from file revisions to changeset revisions
mpm@selenic.com
parents:
diff
changeset
|
94 to work over. |
9117c6561b0b
Add back links from file revisions to changeset revisions
mpm@selenic.com
parents:
diff
changeset
|
95 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
|
96 """ |
9117c6561b0b
Add back links from file revisions to changeset revisions
mpm@selenic.com
parents:
diff
changeset
|
97 self.fo = fo |
9117c6561b0b
Add back links from file revisions to changeset revisions
mpm@selenic.com
parents:
diff
changeset
|
98 (self.firstbyte, self.lastbyte) = range_tuple_normalize(rangetup) |
9117c6561b0b
Add back links from file revisions to changeset revisions
mpm@selenic.com
parents:
diff
changeset
|
99 self.realpos = 0 |
9117c6561b0b
Add back links from file revisions to changeset revisions
mpm@selenic.com
parents:
diff
changeset
|
100 self._do_seek(self.firstbyte) |
575 | 101 |
0
9117c6561b0b
Add back links from file revisions to changeset revisions
mpm@selenic.com
parents:
diff
changeset
|
102 def __getattr__(self, name): |
9117c6561b0b
Add back links from file revisions to changeset revisions
mpm@selenic.com
parents:
diff
changeset
|
103 """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
|
104 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
|
105 in self.fo. This includes methods.""" |
9117c6561b0b
Add back links from file revisions to changeset revisions
mpm@selenic.com
parents:
diff
changeset
|
106 if hasattr(self.fo, name): |
9117c6561b0b
Add back links from file revisions to changeset revisions
mpm@selenic.com
parents:
diff
changeset
|
107 return getattr(self.fo, name) |
7008
8fee8ff13d37
use Exception(args)-style raising consistently (py3k compatibility)
Peter Ruibal <peter.ruibal@intel.com>
parents:
5930
diff
changeset
|
108 raise AttributeError(name) |
575 | 109 |
0
9117c6561b0b
Add back links from file revisions to changeset revisions
mpm@selenic.com
parents:
diff
changeset
|
110 def tell(self): |
9117c6561b0b
Add back links from file revisions to changeset revisions
mpm@selenic.com
parents:
diff
changeset
|
111 """Return the position within the range. |
575 | 112 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
|
113 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
|
114 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
|
115 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
|
116 """ |
9117c6561b0b
Add back links from file revisions to changeset revisions
mpm@selenic.com
parents:
diff
changeset
|
117 return (self.realpos - self.firstbyte) |
575 | 118 |
3673
eb0b4a2d70a9
white space and line break cleanups
Thomas Arendsen Hein <thomas@intevation.de>
parents:
674
diff
changeset
|
119 def seek(self, offset, whence=0): |
0
9117c6561b0b
Add back links from file revisions to changeset revisions
mpm@selenic.com
parents:
diff
changeset
|
120 """Seek within the byte range. |
9117c6561b0b
Add back links from file revisions to changeset revisions
mpm@selenic.com
parents:
diff
changeset
|
121 Positioning is identical to that described under tell(). |
9117c6561b0b
Add back links from file revisions to changeset revisions
mpm@selenic.com
parents:
diff
changeset
|
122 """ |
9117c6561b0b
Add back links from file revisions to changeset revisions
mpm@selenic.com
parents:
diff
changeset
|
123 assert whence in (0, 1, 2) |
9117c6561b0b
Add back links from file revisions to changeset revisions
mpm@selenic.com
parents:
diff
changeset
|
124 if whence == 0: # absolute seek |
9117c6561b0b
Add back links from file revisions to changeset revisions
mpm@selenic.com
parents:
diff
changeset
|
125 realoffset = self.firstbyte + offset |
9117c6561b0b
Add back links from file revisions to changeset revisions
mpm@selenic.com
parents:
diff
changeset
|
126 elif whence == 1: # relative seek |
9117c6561b0b
Add back links from file revisions to changeset revisions
mpm@selenic.com
parents:
diff
changeset
|
127 realoffset = self.realpos + offset |
9117c6561b0b
Add back links from file revisions to changeset revisions
mpm@selenic.com
parents:
diff
changeset
|
128 elif whence == 2: # absolute from end of file |
9117c6561b0b
Add back links from file revisions to changeset revisions
mpm@selenic.com
parents:
diff
changeset
|
129 # XXX: are we raising the right Error here? |
9117c6561b0b
Add back links from file revisions to changeset revisions
mpm@selenic.com
parents:
diff
changeset
|
130 raise IOError('seek from end of file not supported.') |
575 | 131 |
0
9117c6561b0b
Add back links from file revisions to changeset revisions
mpm@selenic.com
parents:
diff
changeset
|
132 # do not allow seek past lastbyte in range |
9117c6561b0b
Add back links from file revisions to changeset revisions
mpm@selenic.com
parents:
diff
changeset
|
133 if self.lastbyte and (realoffset >= self.lastbyte): |
9117c6561b0b
Add back links from file revisions to changeset revisions
mpm@selenic.com
parents:
diff
changeset
|
134 realoffset = self.lastbyte |
575 | 135 |
0
9117c6561b0b
Add back links from file revisions to changeset revisions
mpm@selenic.com
parents:
diff
changeset
|
136 self._do_seek(realoffset - self.realpos) |
575 | 137 |
0
9117c6561b0b
Add back links from file revisions to changeset revisions
mpm@selenic.com
parents:
diff
changeset
|
138 def read(self, size=-1): |
9117c6561b0b
Add back links from file revisions to changeset revisions
mpm@selenic.com
parents:
diff
changeset
|
139 """Read within the range. |
9117c6561b0b
Add back links from file revisions to changeset revisions
mpm@selenic.com
parents:
diff
changeset
|
140 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
|
141 """ |
9117c6561b0b
Add back links from file revisions to changeset revisions
mpm@selenic.com
parents:
diff
changeset
|
142 size = self._calc_read_size(size) |
9117c6561b0b
Add back links from file revisions to changeset revisions
mpm@selenic.com
parents:
diff
changeset
|
143 rslt = self.fo.read(size) |
9117c6561b0b
Add back links from file revisions to changeset revisions
mpm@selenic.com
parents:
diff
changeset
|
144 self.realpos += len(rslt) |
9117c6561b0b
Add back links from file revisions to changeset revisions
mpm@selenic.com
parents:
diff
changeset
|
145 return rslt |
575 | 146 |
0
9117c6561b0b
Add back links from file revisions to changeset revisions
mpm@selenic.com
parents:
diff
changeset
|
147 def readline(self, size=-1): |
9117c6561b0b
Add back links from file revisions to changeset revisions
mpm@selenic.com
parents:
diff
changeset
|
148 """Read lines within the range. |
9117c6561b0b
Add back links from file revisions to changeset revisions
mpm@selenic.com
parents:
diff
changeset
|
149 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
|
150 """ |
9117c6561b0b
Add back links from file revisions to changeset revisions
mpm@selenic.com
parents:
diff
changeset
|
151 size = self._calc_read_size(size) |
9117c6561b0b
Add back links from file revisions to changeset revisions
mpm@selenic.com
parents:
diff
changeset
|
152 rslt = self.fo.readline(size) |
9117c6561b0b
Add back links from file revisions to changeset revisions
mpm@selenic.com
parents:
diff
changeset
|
153 self.realpos += len(rslt) |
9117c6561b0b
Add back links from file revisions to changeset revisions
mpm@selenic.com
parents:
diff
changeset
|
154 return rslt |
575 | 155 |
0
9117c6561b0b
Add back links from file revisions to changeset revisions
mpm@selenic.com
parents:
diff
changeset
|
156 def _calc_read_size(self, size): |
9117c6561b0b
Add back links from file revisions to changeset revisions
mpm@selenic.com
parents:
diff
changeset
|
157 """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
|
158 the range. |
9117c6561b0b
Add back links from file revisions to changeset revisions
mpm@selenic.com
parents:
diff
changeset
|
159 """ |
9117c6561b0b
Add back links from file revisions to changeset revisions
mpm@selenic.com
parents:
diff
changeset
|
160 if self.lastbyte: |
9117c6561b0b
Add back links from file revisions to changeset revisions
mpm@selenic.com
parents:
diff
changeset
|
161 if size > -1: |
9117c6561b0b
Add back links from file revisions to changeset revisions
mpm@selenic.com
parents:
diff
changeset
|
162 if ((self.realpos + size) >= self.lastbyte): |
9117c6561b0b
Add back links from file revisions to changeset revisions
mpm@selenic.com
parents:
diff
changeset
|
163 size = (self.lastbyte - self.realpos) |
9117c6561b0b
Add back links from file revisions to changeset revisions
mpm@selenic.com
parents:
diff
changeset
|
164 else: |
9117c6561b0b
Add back links from file revisions to changeset revisions
mpm@selenic.com
parents:
diff
changeset
|
165 size = (self.lastbyte - self.realpos) |
9117c6561b0b
Add back links from file revisions to changeset revisions
mpm@selenic.com
parents:
diff
changeset
|
166 return size |
575 | 167 |
3673
eb0b4a2d70a9
white space and line break cleanups
Thomas Arendsen Hein <thomas@intevation.de>
parents:
674
diff
changeset
|
168 def _do_seek(self, offset): |
0
9117c6561b0b
Add back links from file revisions to changeset revisions
mpm@selenic.com
parents:
diff
changeset
|
169 """Seek based on whether wrapped object supports seek(). |
9117c6561b0b
Add back links from file revisions to changeset revisions
mpm@selenic.com
parents:
diff
changeset
|
170 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
|
171 """ |
9117c6561b0b
Add back links from file revisions to changeset revisions
mpm@selenic.com
parents:
diff
changeset
|
172 assert offset >= 0 |
9117c6561b0b
Add back links from file revisions to changeset revisions
mpm@selenic.com
parents:
diff
changeset
|
173 if not hasattr(self.fo, 'seek'): |
9117c6561b0b
Add back links from file revisions to changeset revisions
mpm@selenic.com
parents:
diff
changeset
|
174 self._poor_mans_seek(offset) |
9117c6561b0b
Add back links from file revisions to changeset revisions
mpm@selenic.com
parents:
diff
changeset
|
175 else: |
9117c6561b0b
Add back links from file revisions to changeset revisions
mpm@selenic.com
parents:
diff
changeset
|
176 self.fo.seek(self.realpos + offset) |
3673
eb0b4a2d70a9
white space and line break cleanups
Thomas Arendsen Hein <thomas@intevation.de>
parents:
674
diff
changeset
|
177 self.realpos += offset |
575 | 178 |
3673
eb0b4a2d70a9
white space and line break cleanups
Thomas Arendsen Hein <thomas@intevation.de>
parents:
674
diff
changeset
|
179 def _poor_mans_seek(self, offset): |
0
9117c6561b0b
Add back links from file revisions to changeset revisions
mpm@selenic.com
parents:
diff
changeset
|
180 """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
|
181 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
|
182 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
|
183 to manually seek to the desired position. |
9117c6561b0b
Add back links from file revisions to changeset revisions
mpm@selenic.com
parents:
diff
changeset
|
184 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
|
185 file object. |
575 | 186 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
|
187 specified offset. |
9117c6561b0b
Add back links from file revisions to changeset revisions
mpm@selenic.com
parents:
diff
changeset
|
188 """ |
9117c6561b0b
Add back links from file revisions to changeset revisions
mpm@selenic.com
parents:
diff
changeset
|
189 pos = 0 |
9117c6561b0b
Add back links from file revisions to changeset revisions
mpm@selenic.com
parents:
diff
changeset
|
190 bufsize = 1024 |
9117c6561b0b
Add back links from file revisions to changeset revisions
mpm@selenic.com
parents:
diff
changeset
|
191 while pos < offset: |
9117c6561b0b
Add back links from file revisions to changeset revisions
mpm@selenic.com
parents:
diff
changeset
|
192 if (pos + bufsize) > offset: |
9117c6561b0b
Add back links from file revisions to changeset revisions
mpm@selenic.com
parents:
diff
changeset
|
193 bufsize = offset - pos |
9117c6561b0b
Add back links from file revisions to changeset revisions
mpm@selenic.com
parents:
diff
changeset
|
194 buf = self.fo.read(bufsize) |
9117c6561b0b
Add back links from file revisions to changeset revisions
mpm@selenic.com
parents:
diff
changeset
|
195 if len(buf) != bufsize: |
9117c6561b0b
Add back links from file revisions to changeset revisions
mpm@selenic.com
parents:
diff
changeset
|
196 raise RangeError('Requested Range Not Satisfiable') |
3673
eb0b4a2d70a9
white space and line break cleanups
Thomas Arendsen Hein <thomas@intevation.de>
parents:
674
diff
changeset
|
197 pos += bufsize |
0
9117c6561b0b
Add back links from file revisions to changeset revisions
mpm@selenic.com
parents:
diff
changeset
|
198 |
9117c6561b0b
Add back links from file revisions to changeset revisions
mpm@selenic.com
parents:
diff
changeset
|
199 class FileRangeHandler(urllib2.FileHandler): |
9117c6561b0b
Add back links from file revisions to changeset revisions
mpm@selenic.com
parents:
diff
changeset
|
200 """FileHandler subclass that adds Range support. |
9117c6561b0b
Add back links from file revisions to changeset revisions
mpm@selenic.com
parents:
diff
changeset
|
201 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
|
202 server would. |
9117c6561b0b
Add back links from file revisions to changeset revisions
mpm@selenic.com
parents:
diff
changeset
|
203 """ |
9117c6561b0b
Add back links from file revisions to changeset revisions
mpm@selenic.com
parents:
diff
changeset
|
204 def open_local_file(self, req): |
9117c6561b0b
Add back links from file revisions to changeset revisions
mpm@selenic.com
parents:
diff
changeset
|
205 import mimetypes |
9034
8429062de8d3
compat: use email in favor of mimetools
Alejandro Santos <alejolp@alejolp.com>
parents:
8378
diff
changeset
|
206 import email |
0
9117c6561b0b
Add back links from file revisions to changeset revisions
mpm@selenic.com
parents:
diff
changeset
|
207 host = req.get_host() |
9117c6561b0b
Add back links from file revisions to changeset revisions
mpm@selenic.com
parents:
diff
changeset
|
208 file = req.get_selector() |
9117c6561b0b
Add back links from file revisions to changeset revisions
mpm@selenic.com
parents:
diff
changeset
|
209 localfile = urllib.url2pathname(file) |
9117c6561b0b
Add back links from file revisions to changeset revisions
mpm@selenic.com
parents:
diff
changeset
|
210 stats = os.stat(localfile) |
9117c6561b0b
Add back links from file revisions to changeset revisions
mpm@selenic.com
parents:
diff
changeset
|
211 size = stats[stat.ST_SIZE] |
8378
59acf64995d2
byterange: fix import error
Martin Geisler <mg@lazybytes.net>
parents:
8366
diff
changeset
|
212 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
|
213 mtype = mimetypes.guess_type(file)[0] |
9117c6561b0b
Add back links from file revisions to changeset revisions
mpm@selenic.com
parents:
diff
changeset
|
214 if host: |
9117c6561b0b
Add back links from file revisions to changeset revisions
mpm@selenic.com
parents:
diff
changeset
|
215 host, port = urllib.splitport(host) |
9117c6561b0b
Add back links from file revisions to changeset revisions
mpm@selenic.com
parents:
diff
changeset
|
216 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
|
217 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
|
218 fo = open(localfile,'rb') |
3673
eb0b4a2d70a9
white space and line break cleanups
Thomas Arendsen Hein <thomas@intevation.de>
parents:
674
diff
changeset
|
219 brange = req.headers.get('Range', None) |
0
9117c6561b0b
Add back links from file revisions to changeset revisions
mpm@selenic.com
parents:
diff
changeset
|
220 brange = range_header_to_tuple(brange) |
9117c6561b0b
Add back links from file revisions to changeset revisions
mpm@selenic.com
parents:
diff
changeset
|
221 assert brange != () |
9117c6561b0b
Add back links from file revisions to changeset revisions
mpm@selenic.com
parents:
diff
changeset
|
222 if brange: |
3673
eb0b4a2d70a9
white space and line break cleanups
Thomas Arendsen Hein <thomas@intevation.de>
parents:
674
diff
changeset
|
223 (fb, lb) = brange |
eb0b4a2d70a9
white space and line break cleanups
Thomas Arendsen Hein <thomas@intevation.de>
parents:
674
diff
changeset
|
224 if lb == '': |
eb0b4a2d70a9
white space and line break cleanups
Thomas Arendsen Hein <thomas@intevation.de>
parents:
674
diff
changeset
|
225 lb = size |
0
9117c6561b0b
Add back links from file revisions to changeset revisions
mpm@selenic.com
parents:
diff
changeset
|
226 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
|
227 raise RangeError('Requested Range Not Satisfiable') |
9117c6561b0b
Add back links from file revisions to changeset revisions
mpm@selenic.com
parents:
diff
changeset
|
228 size = (lb - fb) |
3673
eb0b4a2d70a9
white space and line break cleanups
Thomas Arendsen Hein <thomas@intevation.de>
parents:
674
diff
changeset
|
229 fo = RangeableFileObject(fo, (fb, lb)) |
9034
8429062de8d3
compat: use email in favor of mimetools
Alejandro Santos <alejolp@alejolp.com>
parents:
8378
diff
changeset
|
230 headers = email.message_from_string( |
5930
c301f15c965a
send conservatively capitalized HTTP headers
Dirkjan Ochtman <dirkjan@ochtman.nl>
parents:
3673
diff
changeset
|
231 '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
|
232 (mtype or 'text/plain', size, modified)) |
0
9117c6561b0b
Add back links from file revisions to changeset revisions
mpm@selenic.com
parents:
diff
changeset
|
233 return urllib.addinfourl(fo, headers, 'file:'+file) |
9117c6561b0b
Add back links from file revisions to changeset revisions
mpm@selenic.com
parents:
diff
changeset
|
234 |
9117c6561b0b
Add back links from file revisions to changeset revisions
mpm@selenic.com
parents:
diff
changeset
|
235 |
575 | 236 # FTP Range Support |
0
9117c6561b0b
Add back links from file revisions to changeset revisions
mpm@selenic.com
parents:
diff
changeset
|
237 # 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
|
238 # from urllib and urllib2 in order to insert the FTP REST command. |
575 | 239 # 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
|
240 # follows: |
9117c6561b0b
Add back links from file revisions to changeset revisions
mpm@selenic.com
parents:
diff
changeset
|
241 # -- range support modifications start/end here |
9117c6561b0b
Add back links from file revisions to changeset revisions
mpm@selenic.com
parents:
diff
changeset
|
242 |
9117c6561b0b
Add back links from file revisions to changeset revisions
mpm@selenic.com
parents:
diff
changeset
|
243 from urllib import splitport, splituser, splitpasswd, splitattr, \ |
9117c6561b0b
Add back links from file revisions to changeset revisions
mpm@selenic.com
parents:
diff
changeset
|
244 unquote, addclosehook, addinfourl |
9117c6561b0b
Add back links from file revisions to changeset revisions
mpm@selenic.com
parents:
diff
changeset
|
245 import ftplib |
9117c6561b0b
Add back links from file revisions to changeset revisions
mpm@selenic.com
parents:
diff
changeset
|
246 import socket |
9117c6561b0b
Add back links from file revisions to changeset revisions
mpm@selenic.com
parents:
diff
changeset
|
247 import sys |
9117c6561b0b
Add back links from file revisions to changeset revisions
mpm@selenic.com
parents:
diff
changeset
|
248 import mimetypes |
9034
8429062de8d3
compat: use email in favor of mimetools
Alejandro Santos <alejolp@alejolp.com>
parents:
8378
diff
changeset
|
249 import email |
0
9117c6561b0b
Add back links from file revisions to changeset revisions
mpm@selenic.com
parents:
diff
changeset
|
250 |
9117c6561b0b
Add back links from file revisions to changeset revisions
mpm@selenic.com
parents:
diff
changeset
|
251 class FTPRangeHandler(urllib2.FTPHandler): |
9117c6561b0b
Add back links from file revisions to changeset revisions
mpm@selenic.com
parents:
diff
changeset
|
252 def ftp_open(self, req): |
9117c6561b0b
Add back links from file revisions to changeset revisions
mpm@selenic.com
parents:
diff
changeset
|
253 host = req.get_host() |
9117c6561b0b
Add back links from file revisions to changeset revisions
mpm@selenic.com
parents:
diff
changeset
|
254 if not host: |
7008
8fee8ff13d37
use Exception(args)-style raising consistently (py3k compatibility)
Peter Ruibal <peter.ruibal@intel.com>
parents:
5930
diff
changeset
|
255 raise IOError('ftp error', 'no host given') |
0
9117c6561b0b
Add back links from file revisions to changeset revisions
mpm@selenic.com
parents:
diff
changeset
|
256 host, port = splitport(host) |
9117c6561b0b
Add back links from file revisions to changeset revisions
mpm@selenic.com
parents:
diff
changeset
|
257 if port is None: |
9117c6561b0b
Add back links from file revisions to changeset revisions
mpm@selenic.com
parents:
diff
changeset
|
258 port = ftplib.FTP_PORT |
9695
e4211db457c0
byterange: backport fix from upstream
Benoit Boissinot <benoit.boissinot@ens-lyon.org>
parents:
9034
diff
changeset
|
259 else: |
e4211db457c0
byterange: backport fix from upstream
Benoit Boissinot <benoit.boissinot@ens-lyon.org>
parents:
9034
diff
changeset
|
260 port = int(port) |
0
9117c6561b0b
Add back links from file revisions to changeset revisions
mpm@selenic.com
parents:
diff
changeset
|
261 |
9117c6561b0b
Add back links from file revisions to changeset revisions
mpm@selenic.com
parents:
diff
changeset
|
262 # username/password handling |
9117c6561b0b
Add back links from file revisions to changeset revisions
mpm@selenic.com
parents:
diff
changeset
|
263 user, host = splituser(host) |
9117c6561b0b
Add back links from file revisions to changeset revisions
mpm@selenic.com
parents:
diff
changeset
|
264 if user: |
9117c6561b0b
Add back links from file revisions to changeset revisions
mpm@selenic.com
parents:
diff
changeset
|
265 user, passwd = splitpasswd(user) |
9117c6561b0b
Add back links from file revisions to changeset revisions
mpm@selenic.com
parents:
diff
changeset
|
266 else: |
9117c6561b0b
Add back links from file revisions to changeset revisions
mpm@selenic.com
parents:
diff
changeset
|
267 passwd = None |
9117c6561b0b
Add back links from file revisions to changeset revisions
mpm@selenic.com
parents:
diff
changeset
|
268 host = unquote(host) |
9117c6561b0b
Add back links from file revisions to changeset revisions
mpm@selenic.com
parents:
diff
changeset
|
269 user = unquote(user or '') |
9117c6561b0b
Add back links from file revisions to changeset revisions
mpm@selenic.com
parents:
diff
changeset
|
270 passwd = unquote(passwd or '') |
575 | 271 |
0
9117c6561b0b
Add back links from file revisions to changeset revisions
mpm@selenic.com
parents:
diff
changeset
|
272 try: |
9117c6561b0b
Add back links from file revisions to changeset revisions
mpm@selenic.com
parents:
diff
changeset
|
273 host = socket.gethostbyname(host) |
9117c6561b0b
Add back links from file revisions to changeset revisions
mpm@selenic.com
parents:
diff
changeset
|
274 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
|
275 raise urllib2.URLError(msg) |
0
9117c6561b0b
Add back links from file revisions to changeset revisions
mpm@selenic.com
parents:
diff
changeset
|
276 path, attrs = splitattr(req.get_selector()) |
9117c6561b0b
Add back links from file revisions to changeset revisions
mpm@selenic.com
parents:
diff
changeset
|
277 dirs = path.split('/') |
9117c6561b0b
Add back links from file revisions to changeset revisions
mpm@selenic.com
parents:
diff
changeset
|
278 dirs = map(unquote, dirs) |
9117c6561b0b
Add back links from file revisions to changeset revisions
mpm@selenic.com
parents:
diff
changeset
|
279 dirs, file = dirs[:-1], dirs[-1] |
9117c6561b0b
Add back links from file revisions to changeset revisions
mpm@selenic.com
parents:
diff
changeset
|
280 if dirs and not dirs[0]: |
9117c6561b0b
Add back links from file revisions to changeset revisions
mpm@selenic.com
parents:
diff
changeset
|
281 dirs = dirs[1:] |
9117c6561b0b
Add back links from file revisions to changeset revisions
mpm@selenic.com
parents:
diff
changeset
|
282 try: |
9117c6561b0b
Add back links from file revisions to changeset revisions
mpm@selenic.com
parents:
diff
changeset
|
283 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
|
284 type = file and 'I' or 'D' |
9117c6561b0b
Add back links from file revisions to changeset revisions
mpm@selenic.com
parents:
diff
changeset
|
285 for attr in attrs: |
9117c6561b0b
Add back links from file revisions to changeset revisions
mpm@selenic.com
parents:
diff
changeset
|
286 attr, value = splitattr(attr) |
9117c6561b0b
Add back links from file revisions to changeset revisions
mpm@selenic.com
parents:
diff
changeset
|
287 if attr.lower() == 'type' and \ |
9117c6561b0b
Add back links from file revisions to changeset revisions
mpm@selenic.com
parents:
diff
changeset
|
288 value in ('a', 'A', 'i', 'I', 'd', 'D'): |
9117c6561b0b
Add back links from file revisions to changeset revisions
mpm@selenic.com
parents:
diff
changeset
|
289 type = value.upper() |
575 | 290 |
0
9117c6561b0b
Add back links from file revisions to changeset revisions
mpm@selenic.com
parents:
diff
changeset
|
291 # -- range support modifications start here |
9117c6561b0b
Add back links from file revisions to changeset revisions
mpm@selenic.com
parents:
diff
changeset
|
292 rest = None |
3673
eb0b4a2d70a9
white space and line break cleanups
Thomas Arendsen Hein <thomas@intevation.de>
parents:
674
diff
changeset
|
293 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
|
294 assert range_tup != () |
9117c6561b0b
Add back links from file revisions to changeset revisions
mpm@selenic.com
parents:
diff
changeset
|
295 if range_tup: |
3673
eb0b4a2d70a9
white space and line break cleanups
Thomas Arendsen Hein <thomas@intevation.de>
parents:
674
diff
changeset
|
296 (fb, lb) = range_tup |
eb0b4a2d70a9
white space and line break cleanups
Thomas Arendsen Hein <thomas@intevation.de>
parents:
674
diff
changeset
|
297 if fb > 0: |
eb0b4a2d70a9
white space and line break cleanups
Thomas Arendsen Hein <thomas@intevation.de>
parents:
674
diff
changeset
|
298 rest = fb |
0
9117c6561b0b
Add back links from file revisions to changeset revisions
mpm@selenic.com
parents:
diff
changeset
|
299 # -- range support modifications end here |
575 | 300 |
0
9117c6561b0b
Add back links from file revisions to changeset revisions
mpm@selenic.com
parents:
diff
changeset
|
301 fp, retrlen = fw.retrfile(file, type, rest) |
575 | 302 |
0
9117c6561b0b
Add back links from file revisions to changeset revisions
mpm@selenic.com
parents:
diff
changeset
|
303 # -- range support modifications start here |
9117c6561b0b
Add back links from file revisions to changeset revisions
mpm@selenic.com
parents:
diff
changeset
|
304 if range_tup: |
3673
eb0b4a2d70a9
white space and line break cleanups
Thomas Arendsen Hein <thomas@intevation.de>
parents:
674
diff
changeset
|
305 (fb, lb) = range_tup |
575 | 306 if lb == '': |
0
9117c6561b0b
Add back links from file revisions to changeset revisions
mpm@selenic.com
parents:
diff
changeset
|
307 if retrlen is None or retrlen == 0: |
10282
08a0f04b56bd
many, many trivial check-code fixups
Matt Mackall <mpm@selenic.com>
parents:
9695
diff
changeset
|
308 raise RangeError('Requested Range Not Satisfiable due' |
08a0f04b56bd
many, many trivial check-code fixups
Matt Mackall <mpm@selenic.com>
parents:
9695
diff
changeset
|
309 ' to unobtainable file length.') |
0
9117c6561b0b
Add back links from file revisions to changeset revisions
mpm@selenic.com
parents:
diff
changeset
|
310 lb = retrlen |
9117c6561b0b
Add back links from file revisions to changeset revisions
mpm@selenic.com
parents:
diff
changeset
|
311 retrlen = lb - fb |
9117c6561b0b
Add back links from file revisions to changeset revisions
mpm@selenic.com
parents:
diff
changeset
|
312 if retrlen < 0: |
9117c6561b0b
Add back links from file revisions to changeset revisions
mpm@selenic.com
parents:
diff
changeset
|
313 # beginning of range is larger than file |
9117c6561b0b
Add back links from file revisions to changeset revisions
mpm@selenic.com
parents:
diff
changeset
|
314 raise RangeError('Requested Range Not Satisfiable') |
9117c6561b0b
Add back links from file revisions to changeset revisions
mpm@selenic.com
parents:
diff
changeset
|
315 else: |
9117c6561b0b
Add back links from file revisions to changeset revisions
mpm@selenic.com
parents:
diff
changeset
|
316 retrlen = lb - fb |
3673
eb0b4a2d70a9
white space and line break cleanups
Thomas Arendsen Hein <thomas@intevation.de>
parents:
674
diff
changeset
|
317 fp = RangeableFileObject(fp, (0, retrlen)) |
0
9117c6561b0b
Add back links from file revisions to changeset revisions
mpm@selenic.com
parents:
diff
changeset
|
318 # -- range support modifications end here |
575 | 319 |
0
9117c6561b0b
Add back links from file revisions to changeset revisions
mpm@selenic.com
parents:
diff
changeset
|
320 headers = "" |
9117c6561b0b
Add back links from file revisions to changeset revisions
mpm@selenic.com
parents:
diff
changeset
|
321 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
|
322 if mtype: |
9117c6561b0b
Add back links from file revisions to changeset revisions
mpm@selenic.com
parents:
diff
changeset
|
323 headers += "Content-Type: %s\n" % mtype |
9117c6561b0b
Add back links from file revisions to changeset revisions
mpm@selenic.com
parents:
diff
changeset
|
324 if retrlen is not None and retrlen >= 0: |
9117c6561b0b
Add back links from file revisions to changeset revisions
mpm@selenic.com
parents:
diff
changeset
|
325 headers += "Content-Length: %d\n" % retrlen |
9034
8429062de8d3
compat: use email in favor of mimetools
Alejandro Santos <alejolp@alejolp.com>
parents:
8378
diff
changeset
|
326 headers = email.message_from_string(headers) |
0
9117c6561b0b
Add back links from file revisions to changeset revisions
mpm@selenic.com
parents:
diff
changeset
|
327 return addinfourl(fp, headers, req.get_full_url()) |
9117c6561b0b
Add back links from file revisions to changeset revisions
mpm@selenic.com
parents:
diff
changeset
|
328 except ftplib.all_errors, msg: |
7008
8fee8ff13d37
use Exception(args)-style raising consistently (py3k compatibility)
Peter Ruibal <peter.ruibal@intel.com>
parents:
5930
diff
changeset
|
329 raise IOError('ftp error', msg), sys.exc_info()[2] |
0
9117c6561b0b
Add back links from file revisions to changeset revisions
mpm@selenic.com
parents:
diff
changeset
|
330 |
9117c6561b0b
Add back links from file revisions to changeset revisions
mpm@selenic.com
parents:
diff
changeset
|
331 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
|
332 fw = ftpwrapper(user, passwd, host, port, dirs) |
9117c6561b0b
Add back links from file revisions to changeset revisions
mpm@selenic.com
parents:
diff
changeset
|
333 return fw |
9117c6561b0b
Add back links from file revisions to changeset revisions
mpm@selenic.com
parents:
diff
changeset
|
334 |
9117c6561b0b
Add back links from file revisions to changeset revisions
mpm@selenic.com
parents:
diff
changeset
|
335 class ftpwrapper(urllib.ftpwrapper): |
9117c6561b0b
Add back links from file revisions to changeset revisions
mpm@selenic.com
parents:
diff
changeset
|
336 # range support note: |
9117c6561b0b
Add back links from file revisions to changeset revisions
mpm@selenic.com
parents:
diff
changeset
|
337 # this ftpwrapper code is copied directly from |
9117c6561b0b
Add back links from file revisions to changeset revisions
mpm@selenic.com
parents:
diff
changeset
|
338 # 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
|
339 # argument and pass it on to ftp.ntransfercmd |
9117c6561b0b
Add back links from file revisions to changeset revisions
mpm@selenic.com
parents:
diff
changeset
|
340 def retrfile(self, file, type, rest=None): |
9117c6561b0b
Add back links from file revisions to changeset revisions
mpm@selenic.com
parents:
diff
changeset
|
341 self.endtransfer() |
3673
eb0b4a2d70a9
white space and line break cleanups
Thomas Arendsen Hein <thomas@intevation.de>
parents:
674
diff
changeset
|
342 if type in ('d', 'D'): |
eb0b4a2d70a9
white space and line break cleanups
Thomas Arendsen Hein <thomas@intevation.de>
parents:
674
diff
changeset
|
343 cmd = 'TYPE A' |
eb0b4a2d70a9
white space and line break cleanups
Thomas Arendsen Hein <thomas@intevation.de>
parents:
674
diff
changeset
|
344 isdir = 1 |
eb0b4a2d70a9
white space and line break cleanups
Thomas Arendsen Hein <thomas@intevation.de>
parents:
674
diff
changeset
|
345 else: |
eb0b4a2d70a9
white space and line break cleanups
Thomas Arendsen Hein <thomas@intevation.de>
parents:
674
diff
changeset
|
346 cmd = 'TYPE ' + type |
eb0b4a2d70a9
white space and line break cleanups
Thomas Arendsen Hein <thomas@intevation.de>
parents:
674
diff
changeset
|
347 isdir = 0 |
0
9117c6561b0b
Add back links from file revisions to changeset revisions
mpm@selenic.com
parents:
diff
changeset
|
348 try: |
9117c6561b0b
Add back links from file revisions to changeset revisions
mpm@selenic.com
parents:
diff
changeset
|
349 self.ftp.voidcmd(cmd) |
9117c6561b0b
Add back links from file revisions to changeset revisions
mpm@selenic.com
parents:
diff
changeset
|
350 except ftplib.all_errors: |
9117c6561b0b
Add back links from file revisions to changeset revisions
mpm@selenic.com
parents:
diff
changeset
|
351 self.init() |
9117c6561b0b
Add back links from file revisions to changeset revisions
mpm@selenic.com
parents:
diff
changeset
|
352 self.ftp.voidcmd(cmd) |
9117c6561b0b
Add back links from file revisions to changeset revisions
mpm@selenic.com
parents:
diff
changeset
|
353 conn = None |
9117c6561b0b
Add back links from file revisions to changeset revisions
mpm@selenic.com
parents:
diff
changeset
|
354 if file and not isdir: |
9117c6561b0b
Add back links from file revisions to changeset revisions
mpm@selenic.com
parents:
diff
changeset
|
355 # 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
|
356 try: |
9117c6561b0b
Add back links from file revisions to changeset revisions
mpm@selenic.com
parents:
diff
changeset
|
357 self.ftp.nlst(file) |
9117c6561b0b
Add back links from file revisions to changeset revisions
mpm@selenic.com
parents:
diff
changeset
|
358 except ftplib.error_perm, reason: |
7008
8fee8ff13d37
use Exception(args)-style raising consistently (py3k compatibility)
Peter Ruibal <peter.ruibal@intel.com>
parents:
5930
diff
changeset
|
359 raise IOError('ftp error', reason), sys.exc_info()[2] |
0
9117c6561b0b
Add back links from file revisions to changeset revisions
mpm@selenic.com
parents:
diff
changeset
|
360 # Restore the transfer mode! |
9117c6561b0b
Add back links from file revisions to changeset revisions
mpm@selenic.com
parents:
diff
changeset
|
361 self.ftp.voidcmd(cmd) |
9117c6561b0b
Add back links from file revisions to changeset revisions
mpm@selenic.com
parents:
diff
changeset
|
362 # Try to retrieve as a file |
9117c6561b0b
Add back links from file revisions to changeset revisions
mpm@selenic.com
parents:
diff
changeset
|
363 try: |
9117c6561b0b
Add back links from file revisions to changeset revisions
mpm@selenic.com
parents:
diff
changeset
|
364 cmd = 'RETR ' + file |
9117c6561b0b
Add back links from file revisions to changeset revisions
mpm@selenic.com
parents:
diff
changeset
|
365 conn = self.ftp.ntransfercmd(cmd, rest) |
9117c6561b0b
Add back links from file revisions to changeset revisions
mpm@selenic.com
parents:
diff
changeset
|
366 except ftplib.error_perm, reason: |
674
6513ba7d858a
Make consistent use of str.startswith() in conditionals.
chad.netzer@gmail.com
parents:
667
diff
changeset
|
367 if str(reason).startswith('501'): |
0
9117c6561b0b
Add back links from file revisions to changeset revisions
mpm@selenic.com
parents:
diff
changeset
|
368 # workaround for REST not supported error |
9117c6561b0b
Add back links from file revisions to changeset revisions
mpm@selenic.com
parents:
diff
changeset
|
369 fp, retrlen = self.retrfile(file, type) |
9117c6561b0b
Add back links from file revisions to changeset revisions
mpm@selenic.com
parents:
diff
changeset
|
370 fp = RangeableFileObject(fp, (rest,'')) |
9117c6561b0b
Add back links from file revisions to changeset revisions
mpm@selenic.com
parents:
diff
changeset
|
371 return (fp, retrlen) |
674
6513ba7d858a
Make consistent use of str.startswith() in conditionals.
chad.netzer@gmail.com
parents:
667
diff
changeset
|
372 elif not str(reason).startswith('550'): |
7008
8fee8ff13d37
use Exception(args)-style raising consistently (py3k compatibility)
Peter Ruibal <peter.ruibal@intel.com>
parents:
5930
diff
changeset
|
373 raise IOError('ftp error', reason), sys.exc_info()[2] |
0
9117c6561b0b
Add back links from file revisions to changeset revisions
mpm@selenic.com
parents:
diff
changeset
|
374 if not conn: |
9117c6561b0b
Add back links from file revisions to changeset revisions
mpm@selenic.com
parents:
diff
changeset
|
375 # Set transfer mode to ASCII! |
9117c6561b0b
Add back links from file revisions to changeset revisions
mpm@selenic.com
parents:
diff
changeset
|
376 self.ftp.voidcmd('TYPE A') |
9117c6561b0b
Add back links from file revisions to changeset revisions
mpm@selenic.com
parents:
diff
changeset
|
377 # Try a directory listing |
3673
eb0b4a2d70a9
white space and line break cleanups
Thomas Arendsen Hein <thomas@intevation.de>
parents:
674
diff
changeset
|
378 if file: |
eb0b4a2d70a9
white space and line break cleanups
Thomas Arendsen Hein <thomas@intevation.de>
parents:
674
diff
changeset
|
379 cmd = 'LIST ' + file |
eb0b4a2d70a9
white space and line break cleanups
Thomas Arendsen Hein <thomas@intevation.de>
parents:
674
diff
changeset
|
380 else: |
eb0b4a2d70a9
white space and line break cleanups
Thomas Arendsen Hein <thomas@intevation.de>
parents:
674
diff
changeset
|
381 cmd = 'LIST' |
0
9117c6561b0b
Add back links from file revisions to changeset revisions
mpm@selenic.com
parents:
diff
changeset
|
382 conn = self.ftp.ntransfercmd(cmd) |
9117c6561b0b
Add back links from file revisions to changeset revisions
mpm@selenic.com
parents:
diff
changeset
|
383 self.busy = 1 |
9117c6561b0b
Add back links from file revisions to changeset revisions
mpm@selenic.com
parents:
diff
changeset
|
384 # 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
|
385 return (addclosehook(conn[0].makefile('rb'), |
9117c6561b0b
Add back links from file revisions to changeset revisions
mpm@selenic.com
parents:
diff
changeset
|
386 self.endtransfer), conn[1]) |
9117c6561b0b
Add back links from file revisions to changeset revisions
mpm@selenic.com
parents:
diff
changeset
|
387 |
9117c6561b0b
Add back links from file revisions to changeset revisions
mpm@selenic.com
parents:
diff
changeset
|
388 |
9117c6561b0b
Add back links from file revisions to changeset revisions
mpm@selenic.com
parents:
diff
changeset
|
389 #################################################################### |
9117c6561b0b
Add back links from file revisions to changeset revisions
mpm@selenic.com
parents:
diff
changeset
|
390 # Range Tuple Functions |
9117c6561b0b
Add back links from file revisions to changeset revisions
mpm@selenic.com
parents:
diff
changeset
|
391 # 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
|
392 |
9117c6561b0b
Add back links from file revisions to changeset revisions
mpm@selenic.com
parents:
diff
changeset
|
393 _rangere = None |
9117c6561b0b
Add back links from file revisions to changeset revisions
mpm@selenic.com
parents:
diff
changeset
|
394 def range_header_to_tuple(range_header): |
9117c6561b0b
Add back links from file revisions to changeset revisions
mpm@selenic.com
parents:
diff
changeset
|
395 """Get a (firstbyte,lastbyte) tuple from a Range header value. |
575 | 396 |
0
9117c6561b0b
Add back links from file revisions to changeset revisions
mpm@selenic.com
parents:
diff
changeset
|
397 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
|
398 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
|
399 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
|
400 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
|
401 tuple. |
575 | 402 |
0
9117c6561b0b
Add back links from file revisions to changeset revisions
mpm@selenic.com
parents:
diff
changeset
|
403 Return None if range_header is None |
575 | 404 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
|
405 pattern. |
575 | 406 |
0
9117c6561b0b
Add back links from file revisions to changeset revisions
mpm@selenic.com
parents:
diff
changeset
|
407 """ |
9117c6561b0b
Add back links from file revisions to changeset revisions
mpm@selenic.com
parents:
diff
changeset
|
408 global _rangere |
3673
eb0b4a2d70a9
white space and line break cleanups
Thomas Arendsen Hein <thomas@intevation.de>
parents:
674
diff
changeset
|
409 if range_header is None: |
eb0b4a2d70a9
white space and line break cleanups
Thomas Arendsen Hein <thomas@intevation.de>
parents:
674
diff
changeset
|
410 return None |
0
9117c6561b0b
Add back links from file revisions to changeset revisions
mpm@selenic.com
parents:
diff
changeset
|
411 if _rangere is None: |
9117c6561b0b
Add back links from file revisions to changeset revisions
mpm@selenic.com
parents:
diff
changeset
|
412 import re |
9117c6561b0b
Add back links from file revisions to changeset revisions
mpm@selenic.com
parents:
diff
changeset
|
413 _rangere = re.compile(r'^bytes=(\d{1,})-(\d*)') |
9117c6561b0b
Add back links from file revisions to changeset revisions
mpm@selenic.com
parents:
diff
changeset
|
414 match = _rangere.match(range_header) |
575 | 415 if match: |
3673
eb0b4a2d70a9
white space and line break cleanups
Thomas Arendsen Hein <thomas@intevation.de>
parents:
674
diff
changeset
|
416 tup = range_tuple_normalize(match.group(1, 2)) |
575 | 417 if tup and tup[1]: |
3673
eb0b4a2d70a9
white space and line break cleanups
Thomas Arendsen Hein <thomas@intevation.de>
parents:
674
diff
changeset
|
418 tup = (tup[0], tup[1]+1) |
0
9117c6561b0b
Add back links from file revisions to changeset revisions
mpm@selenic.com
parents:
diff
changeset
|
419 return tup |
9117c6561b0b
Add back links from file revisions to changeset revisions
mpm@selenic.com
parents:
diff
changeset
|
420 return () |
9117c6561b0b
Add back links from file revisions to changeset revisions
mpm@selenic.com
parents:
diff
changeset
|
421 |
9117c6561b0b
Add back links from file revisions to changeset revisions
mpm@selenic.com
parents:
diff
changeset
|
422 def range_tuple_to_header(range_tup): |
9117c6561b0b
Add back links from file revisions to changeset revisions
mpm@selenic.com
parents:
diff
changeset
|
423 """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
|
424 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
|
425 if no range is needed. |
9117c6561b0b
Add back links from file revisions to changeset revisions
mpm@selenic.com
parents:
diff
changeset
|
426 """ |
3673
eb0b4a2d70a9
white space and line break cleanups
Thomas Arendsen Hein <thomas@intevation.de>
parents:
674
diff
changeset
|
427 if range_tup is None: |
eb0b4a2d70a9
white space and line break cleanups
Thomas Arendsen Hein <thomas@intevation.de>
parents:
674
diff
changeset
|
428 return None |
0
9117c6561b0b
Add back links from file revisions to changeset revisions
mpm@selenic.com
parents:
diff
changeset
|
429 range_tup = range_tuple_normalize(range_tup) |
9117c6561b0b
Add back links from file revisions to changeset revisions
mpm@selenic.com
parents:
diff
changeset
|
430 if range_tup: |
575 | 431 if range_tup[1]: |
3673
eb0b4a2d70a9
white space and line break cleanups
Thomas Arendsen Hein <thomas@intevation.de>
parents:
674
diff
changeset
|
432 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
|
433 return 'bytes=%s-%s' % range_tup |
575 | 434 |
0
9117c6561b0b
Add back links from file revisions to changeset revisions
mpm@selenic.com
parents:
diff
changeset
|
435 def range_tuple_normalize(range_tup): |
9117c6561b0b
Add back links from file revisions to changeset revisions
mpm@selenic.com
parents:
diff
changeset
|
436 """Normalize a (first_byte,last_byte) range tuple. |
9117c6561b0b
Add back links from file revisions to changeset revisions
mpm@selenic.com
parents:
diff
changeset
|
437 Return a tuple whose first element is guaranteed to be an int |
575 | 438 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
|
439 an int. Finally, return None if the normalized tuple == (0,'') |
9117c6561b0b
Add back links from file revisions to changeset revisions
mpm@selenic.com
parents:
diff
changeset
|
440 as that is equivelant to retrieving the entire file. |
9117c6561b0b
Add back links from file revisions to changeset revisions
mpm@selenic.com
parents:
diff
changeset
|
441 """ |
3673
eb0b4a2d70a9
white space and line break cleanups
Thomas Arendsen Hein <thomas@intevation.de>
parents:
674
diff
changeset
|
442 if range_tup is None: |
eb0b4a2d70a9
white space and line break cleanups
Thomas Arendsen Hein <thomas@intevation.de>
parents:
674
diff
changeset
|
443 return None |
0
9117c6561b0b
Add back links from file revisions to changeset revisions
mpm@selenic.com
parents:
diff
changeset
|
444 # handle first byte |
9117c6561b0b
Add back links from file revisions to changeset revisions
mpm@selenic.com
parents:
diff
changeset
|
445 fb = range_tup[0] |
3673
eb0b4a2d70a9
white space and line break cleanups
Thomas Arendsen Hein <thomas@intevation.de>
parents:
674
diff
changeset
|
446 if fb in (None, ''): |
eb0b4a2d70a9
white space and line break cleanups
Thomas Arendsen Hein <thomas@intevation.de>
parents:
674
diff
changeset
|
447 fb = 0 |
eb0b4a2d70a9
white space and line break cleanups
Thomas Arendsen Hein <thomas@intevation.de>
parents:
674
diff
changeset
|
448 else: |
eb0b4a2d70a9
white space and line break cleanups
Thomas Arendsen Hein <thomas@intevation.de>
parents:
674
diff
changeset
|
449 fb = int(fb) |
0
9117c6561b0b
Add back links from file revisions to changeset revisions
mpm@selenic.com
parents:
diff
changeset
|
450 # handle last byte |
3673
eb0b4a2d70a9
white space and line break cleanups
Thomas Arendsen Hein <thomas@intevation.de>
parents:
674
diff
changeset
|
451 try: |
eb0b4a2d70a9
white space and line break cleanups
Thomas Arendsen Hein <thomas@intevation.de>
parents:
674
diff
changeset
|
452 lb = range_tup[1] |
eb0b4a2d70a9
white space and line break cleanups
Thomas Arendsen Hein <thomas@intevation.de>
parents:
674
diff
changeset
|
453 except IndexError: |
eb0b4a2d70a9
white space and line break cleanups
Thomas Arendsen Hein <thomas@intevation.de>
parents:
674
diff
changeset
|
454 lb = '' |
575 | 455 else: |
3673
eb0b4a2d70a9
white space and line break cleanups
Thomas Arendsen Hein <thomas@intevation.de>
parents:
674
diff
changeset
|
456 if lb is None: |
eb0b4a2d70a9
white space and line break cleanups
Thomas Arendsen Hein <thomas@intevation.de>
parents:
674
diff
changeset
|
457 lb = '' |
eb0b4a2d70a9
white space and line break cleanups
Thomas Arendsen Hein <thomas@intevation.de>
parents:
674
diff
changeset
|
458 elif lb != '': |
eb0b4a2d70a9
white space and line break cleanups
Thomas Arendsen Hein <thomas@intevation.de>
parents:
674
diff
changeset
|
459 lb = int(lb) |
0
9117c6561b0b
Add back links from file revisions to changeset revisions
mpm@selenic.com
parents:
diff
changeset
|
460 # 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
|
461 if (fb, lb) == (0, ''): |
eb0b4a2d70a9
white space and line break cleanups
Thomas Arendsen Hein <thomas@intevation.de>
parents:
674
diff
changeset
|
462 return None |
0
9117c6561b0b
Add back links from file revisions to changeset revisions
mpm@selenic.com
parents:
diff
changeset
|
463 # check that the range is valid |
3673
eb0b4a2d70a9
white space and line break cleanups
Thomas Arendsen Hein <thomas@intevation.de>
parents:
674
diff
changeset
|
464 if lb < fb: |
eb0b4a2d70a9
white space and line break cleanups
Thomas Arendsen Hein <thomas@intevation.de>
parents:
674
diff
changeset
|
465 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
|
466 return (fb, lb) |