extdiff: do single file diffs from the wc with no copy
Extdiff was always making a temporary directory and copying files even when not required. This change makes extdiff avoid the copy when diffing a single file that lives in the wc. This lets external diff tools edit the working copy file directly. It also lets other extensions resuse the functions in extdiff and get in-place diffs.
#!/usr/bin/env python
#
# An example CGI script to use hgweb, edit as necessary
# send python tracebacks to the browser if an error occurs:
import cgitb
cgitb.enable()
# adjust python path if not a system-wide install:
#import sys
#sys.path.insert(0, "/path/to/python/lib")
# If you'd like to serve pages with UTF-8 instead of your default
# locale charset, you can do so by uncommenting the following lines.
# Note that this will cause your .hgrc files to be interpreted in
# UTF-8 and all your repo files to be displayed using UTF-8.
#
#import os
#os.environ["HGENCODING"] = "UTF-8"
from mercurial.hgweb.hgweb_mod import hgweb
from mercurial.hgweb.request import wsgiapplication
import mercurial.hgweb.wsgicgi as wsgicgi
def make_web_app():
return hgweb("/path/to/repo", "repository name")
wsgicgi.launch(wsgiapplication(make_web_app))