Mercurial > hg
annotate mercurial/node.py @ 29491:7f0498bd284e
hgweb: emit a valid, weak ETag
Previously, ETag headers from hgweb weren't correctly formed, because rfc2616
(section 14, header definitions) requires double quotes around the content of
the header. str(web.mtime) didn't do that.
Additionally, strong ETags signify that the resource representations are
byte-for-byte identical. That is, they can be reconstructed from byte ranges if
client so wishes. Considering ETags for all hgweb pages is just mtime of
00changelog.i and doesn't consider of e.g. .hg/hgrc with description, contact
and other fields, it's clearly shouldn't be strong. The W/ prefix marks it as
weak, which still allows caching the whole served file/page, but doesn't allow
byte-range requests.
author | Anton Shestakov <av6@dwimlabs.net> |
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date | Sat, 09 Jul 2016 03:26:24 +0800 |
parents | a3f3fdac8433 |
children | 0298a07f64d9 |
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1 # node.py - basic nodeid manipulation for mercurial |
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2 # |
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3 # Copyright 2005, 2006 Matt Mackall <mpm@selenic.com> |
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4 # |
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5 # This software may be used and distributed according to the terms of the |
10263 | 6 # GNU General Public License version 2 or any later version. |
1089 | 7 |
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8 from __future__ import absolute_import |
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9 |
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10 import binascii |
1089 | 11 |
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12 # This ugly style has a noticeable effect in manifest parsing |
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13 hex = binascii.hexlify |
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14 bin = binascii.unhexlify |
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15 |
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Define and use nullrev (revision of nullid) instead of -1.
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16 nullrev = -1 |
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17 nullid = b"\0" * 20 |
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18 nullhex = hex(nullid) |
1089 | 19 |
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20 # pseudo identifiers for working directory |
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21 # (they are experimental, so don't add too many dependencies on them) |
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22 wdirrev = 0x7fffffff |
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23 wdirid = b"\xff" * 20 |
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24 |
1089 | 25 def short(node): |
26 return hex(node[:6]) |