tests/printenv.py

tests: remove 'hghave symlink' from test-import-git.t

The test had a long chain of commits depending on execbits in some of first
commits. The hashes are checked throughout the file, so there was no elegant
way to make it pass both with and without execbits.

We now rollback the execbits-or-not commits and make a stable change instead.
The hash chain is thus updated once but is now a bit more stable. The test
coverage should be unaltered.

# simple script to be used in hooks
#
# put something like this in the repo .hg/hgrc:
#
#     [hooks]
#     changegroup = python "$TESTDIR"/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

try:
    import msvcrt
    msvcrt.setmode(sys.stdin.fileno(), os.O_BINARY)
    msvcrt.setmode(sys.stdout.fileno(), os.O_BINARY)
    msvcrt.setmode(sys.stderr.fileno(), os.O_BINARY)
except ImportError:
    pass

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()

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)