view hgweb.cgi @ 49010:681b25ea579e

contrib: add a partial-merge tool for sorted lists (such as Python imports)

This is a pretty naive tool that uses a regular expression for
matching lines. It is based on a Google-internal tool that worked in a
similar way.

For now, the regular expression is hard-coded to attempt to match
single-line Python imports. The only commit I've found in the hg core
repo where the tool helped was commit 9cd6292abfdf. I think that's
because we often use multiple imports per import statement. I think
this tool is still a decent first step (especially once the regex is
made configurable in the next patch). The merging should ideally use a
proper Python parser and do the merge at the AST (or CST?) level, but
that's significantly harder, especially if you want to preserve
comments and whitespace. It's also less generic.

Differential Revision: https://phab.mercurial-scm.org/D12380

#!/usr/bin/env python3
#
# An example hgweb CGI script, edit as necessary
# See also https://mercurial-scm.org/wiki/PublishingRepositories

# Path to repo or hgweb config to serve (see 'hg help hgweb')
config = b"/path/to/repo/or/config"

# Uncomment and adjust if Mercurial is not installed system-wide
# (consult "installed modules" path from 'hg debuginstall'):
# import sys; sys.path.insert(0, "/path/to/python/lib")

# Uncomment to send python tracebacks to the browser if an error occurs:
# import cgitb; cgitb.enable()

from mercurial import demandimport

demandimport.enable()
from mercurial.hgweb import hgweb, wsgicgi

application = hgweb(config)
wsgicgi.launch(application)