#!/usr/bin/env python

# This preamble is adapted from Twisted. If we're being run from a source
# tree, add that tree's libdir to our path, so tahoe can be run from source
# without a lot of tedious PYTHONPATH changes.
import sys, os.path
where = os.path.realpath(sys.argv[0]).split(os.sep)

# look for Tahoe.home . Three cases:
#  ...(not BASE)/allmydata-tahoe
#  .../(BASE)/bin/allmydata-tahoe
#  .../(BASE)/instdir/bin/allmydata-tahoe
if len(where) >= 2 and where[-2] == "bin":
    if len(where) >= 3 and where[-3] == "instdir":
        base = os.sep.join(where[:-3])
    else:
        base = os.sep.join(where[:-2])

    if os.path.exists(os.path.join(base, "Tahoe.home")):
        # we've found our home
        libdir = os.path.join(base, "instdir", "lib")
        sys.path.insert(0, libdir)
        # also update PYTHONPATH so that child processes (like twistd) will
        # use this too
        pp = os.environ.get("PYTHONPATH")
        if pp:
            pp = libdir + ":" + pp
        else:
            pp = libdir
        os.environ["PYTHONPATH"] = pp

from allmydata.scripts import runner
runner.run()