##// END OF EJS Templates
revset: introduce new operator "##" to concatenate strings/symbols at runtime...
revset: introduce new operator "##" to concatenate strings/symbols at runtime Before this patch, there is no way to concatenate strings at runtime. For example, to search for the issue ID "1234" in descriptions against all of "issue 1234", "issue:1234", issue1234" and "bug(1234)" patterns, the revset below should be written fully from scratch for each issue ID. grep(r"\bissue[ :]?1234\b|\bbug\(1234\)") This patch introduces new infix operator "##" to concatenate strings/symbols at runtime. Operator symbol "##" comes from the same one of C pre-processor. This concatenation allows parametrizing a part of strings in revset queries. In the case of example above, the definition of the revset alias using operator "##" below can search issue ID "1234" in complicated patterns by "issue(1234)" simply: issue($1) = grep(r"\bissue[ :]?" ## $1 ## r"\b|\bbug\(" ## $1 ## r"\)") "##" operator does: - concatenate not only strings but also symbols into the string Exact distinction between strings and symbols seems not to be convenience, because it is tiresome for users (and "revset.getstring" treats both similarly) For example of revset alias "issue()", "issue(1234)" is easier than "issue('1234')". - have higher priority than any other prefix, infix and postfix operators (like as "##" of C pre-processor) This patch (re-)assigns the priority 20 to "##", and 21 to "(", because priority 19 is already assigned to "-" as prefix "negate".

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protocol.py
98 lines | 3.1 KiB | text/x-python | PythonLexer
#
# Copyright 21 May 2005 - (c) 2005 Jake Edge <jake@edge2.net>
# Copyright 2005-2007 Matt Mackall <mpm@selenic.com>
#
# This software may be used and distributed according to the terms of the
# GNU General Public License version 2 or any later version.
import cgi, cStringIO, zlib, urllib
from mercurial import util, wireproto
from common import HTTP_OK
HGTYPE = 'application/mercurial-0.1'
HGERRTYPE = 'application/hg-error'
class webproto(wireproto.abstractserverproto):
def __init__(self, req, ui):
self.req = req
self.response = ''
self.ui = ui
def getargs(self, args):
knownargs = self._args()
data = {}
keys = args.split()
for k in keys:
if k == '*':
star = {}
for key in knownargs.keys():
if key != 'cmd' and key not in keys:
star[key] = knownargs[key][0]
data['*'] = star
else:
data[k] = knownargs[k][0]
return [data[k] for k in keys]
def _args(self):
args = self.req.form.copy()
chunks = []
i = 1
while True:
h = self.req.env.get('HTTP_X_HGARG_' + str(i))
if h is None:
break
chunks += [h]
i += 1
args.update(cgi.parse_qs(''.join(chunks), keep_blank_values=True))
return args
def getfile(self, fp):
length = int(self.req.env['CONTENT_LENGTH'])
for s in util.filechunkiter(self.req, limit=length):
fp.write(s)
def redirect(self):
self.oldio = self.ui.fout, self.ui.ferr
self.ui.ferr = self.ui.fout = cStringIO.StringIO()
def restore(self):
val = self.ui.fout.getvalue()
self.ui.ferr, self.ui.fout = self.oldio
return val
def groupchunks(self, cg):
z = zlib.compressobj()
while True:
chunk = cg.read(4096)
if not chunk:
break
yield z.compress(chunk)
yield z.flush()
def _client(self):
return 'remote:%s:%s:%s' % (
self.req.env.get('wsgi.url_scheme') or 'http',
urllib.quote(self.req.env.get('REMOTE_HOST', '')),
urllib.quote(self.req.env.get('REMOTE_USER', '')))
def iscmd(cmd):
return cmd in wireproto.commands
def call(repo, req, cmd):
p = webproto(req, repo.ui)
rsp = wireproto.dispatch(repo, p, cmd)
if isinstance(rsp, str):
req.respond(HTTP_OK, HGTYPE, body=rsp)
return []
elif isinstance(rsp, wireproto.streamres):
req.respond(HTTP_OK, HGTYPE)
return rsp.gen
elif isinstance(rsp, wireproto.pushres):
val = p.restore()
rsp = '%d\n%s' % (rsp.res, val)
req.respond(HTTP_OK, HGTYPE, body=rsp)
return []
elif isinstance(rsp, wireproto.pusherr):
# drain the incoming bundle
req.drain()
p.restore()
rsp = '0\n%s\n' % rsp.res
req.respond(HTTP_OK, HGTYPE, body=rsp)
return []
elif isinstance(rsp, wireproto.ooberror):
rsp = rsp.message
req.respond(HTTP_OK, HGERRTYPE, body=rsp)
return []