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#!/usr/bin/env python

# Python wrapper, which makes it able to import the built (and not the
# installed) version of libjio.
#
# The first parameter must be the python version (2 or 3)

import sys
import os
import glob


if len(sys.argv) < 2 or sys.argv[1] not in ("2", "3"):
	sys.stderr.write("Error: the first argument must be the " +
				"version (2 or 3)\n")
	sys.exit(1)

py_ver = sys.argv[1]


# Find the path where the library was built and add it to the lookup paths, so
# we run against it
lib_bin = os.path.dirname(sys.argv[0]) + "/../../libjio/build/libjio.so"

if not os.path.exists(lib_bin):
	sys.stderr.write("Can't find library (run make)\n")
	sys.exit(1)

lib_path = os.path.dirname(os.path.abspath(lib_bin))
os.environ["LD_LIBRARY_PATH"] = ":".join([lib_path, \
				os.environ.get("LD_LIBRARY_PATH", "")])


# Find out the corresponding module path for the desired python version. The
# path must be absolute
mod_bins = glob.glob(os.path.dirname(sys.argv[0]) +
			"/../../bindings/python/build/lib*-%s.*/libjio.so" \
				% py_ver)
if not mod_bins:
	sys.stderr.write(("Can't find python%s bindings, run " +
				"make python%s\n") % (py_ver, py_ver))
	sys.exit(1)

if len(mod_bins) > 1:
	sys.stderr.write("Found too many matching python%s bindings" \
				% py_ver)
	sys.exit(1)

mod_path = os.path.dirname(os.path.abspath(mod_bins[0]))
os.environ["PYTHONPATH"] = ":".join([mod_path,
					os.environ.get("PYTHONPATH", "")])

if py_ver == '2':
	py_bin = "python"
else:
	py_bin = "python3"

os.execvp(py_bin, [py_bin] + sys.argv[2:])