Enable demandimport only in scripts, not in importable modules (issue605)
This way other applications can choose if and when they want this feature,
because it might be problematic if those applications rely on ImportError.
# simple script to be used in hooks
# copy it to the current directory when the test starts:
#
# cp "$TESTDIR"/printenv.py .
#
# put something like this in the repo .hg/hgrc:
#
# [hooks]
# changegroup = python ../printenv.py <hookname> [exit] [output]
#
# - <hookname> is a mandatory argument (e.g. "changegroup")
# - [exit] is the exit code of the hook (default: 0)
# - [output] is the name of the output file (default: use sys.stdout)
# the file will be opened in append mode.
#
import os
import sys
exitcode = 0
out = sys.stdout
name = sys.argv[1]
if len(sys.argv) > 2:
exitcode = int(sys.argv[2])
if len(sys.argv) > 3:
out = open(sys.argv[3], "ab")
# variables with empty values may not exist on all platforms, filter
# them now for portability sake.
env = [k for k, v in os.environ.iteritems()
if k.startswith("HG_") and v]
env.sort()
# edit the variable part of the variable
url = os.environ.get("HG_URL", "")
if url.startswith("file:"):
os.environ["HG_URL"] = "file:"
elif url.startswith("remote:http"):
os.environ["HG_URL"] = "remote:http"
out.write("%s hook: " % name)
for v in env:
out.write("%s=%s " % (v, os.environ[v]))
out.write("\n")
out.close()
sys.exit(exitcode)