#!/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 . Two cases:
#  ...(not BASE)/tahoe
#  .../(BASE)/bin/tahoe
if len(where) >= 2 and where[-2] == "bin":
    base = os.sep.join(where[:-2])

    if os.path.exists(os.path.join(base, "Tahoe.home")):
        # we've found our home. Put the tahoe source at the front of sys.path
        srcdir = os.path.join(base, "src")
        sys.path.insert(0, srcdir)
        # and put any support eggs at the end of sys.path
        if sys.platform == "win32":
            supportdir = os.path.join(base, "support", "Lib", "site-packages")
        else:
            supportdir = os.path.join(base, "support",
                                      "lib",
                                      "python%d.%d" % sys.version_info[:2],
                                      "site-packages")
        support_eggs = []
        if os.path.exists(supportdir):
            for fn in os.listdir(supportdir):
                if fn.endswith(".egg"):
                    support_eggs.append(os.path.join(supportdir, fn))

        sys.path.extend(support_eggs)

        # also update PYTHONPATH so that child processes (like twistd) will
        # use this too
        pp = os.environ.get("PYTHONPATH")
        if pp:
            pp = os.pathsep.join([srcdir] + pp.split(os.pathsep) + support_eggs)
        else:
            pp = os.pathsep.join([srcdir] + support_eggs)
        os.environ["PYTHONPATH"] = pp

from allmydata.scripts import runner
runner.run()