templater: add "diff" template function
"diff" allows to embed changes in the target revision into template
output, even if the command itself doesn't take "--patch" option
Combination of "[committemplate]" configuration and "diff" template
function can achieve the feature like issue231 ("option to have diff
displayed in commit editor buffer")
http://bz.selenic.com/show_bug.cgi?id=231
For example, templating below can be used to add each "diff" output
lines "HG: " prefix::
{splitlines(diff) % 'HG: {line}\n'}
This patch implements "diff" not as "a template keyword" but as "a
template function" to take include/exclude patterns at runtime.
It allows to specify target files of command (by -I/-X command line
options) and "diff" separately.
# Copyright 2010-2011 Fog Creek Software
#
# This software may be used and distributed according to the terms of the
# GNU General Public License version 2 or any later version.
'''largefile store working over Mercurial's wire protocol'''
import lfutil
import remotestore
class wirestore(remotestore.remotestore):
def __init__(self, ui, repo, remote):
cap = remote.capable('largefiles')
if not cap:
raise lfutil.storeprotonotcapable([])
storetypes = cap.split(',')
if 'serve' not in storetypes:
raise lfutil.storeprotonotcapable(storetypes)
self.remote = remote
super(wirestore, self).__init__(ui, repo, remote.url())
def _put(self, hash, fd):
return self.remote.putlfile(hash, fd)
def _get(self, hash):
return self.remote.getlfile(hash)
def _stat(self, hashes):
'''For each hash, return 0 if it is available, other values if not.
It is usually 2 if the largefile is missing, but might be 1 the server
has a corrupted copy.'''
batch = self.remote.batch()
futures = {}
for hash in hashes:
futures[hash] = batch.statlfile(hash)
batch.submit()
retval = {}
for hash in hashes:
retval[hash] = futures[hash].value
return retval