#!@PYTHON@
"""\
nbb - ndim's branch builder
Build, install given branch of source code into a branch specific place
Copyright (C) 2007, 2008 Hans Ulrich Niedermann <hun@n-dimensional.de>
License conditions TBA
"""

import sys
import os

PACKAGE_VERSION = "@PACKAGE_VERSION@"
if sys.version_info < (2, 4):
    print "Fatal: This program requires Python 2.4 or later."
    sys.exit(3)

import logging # since python 2.3


def logmain(argv):
    """set up logging module"""
    # funcName: Since python 2.5
    # format="%(filename)s:%(lineno)d:%(funcName)s:"
    logformat = "%(levelname)s: %(message)s"
    loglevel = logging.WARNING
    i = 1
    while i < len(argv):
        if argv[i] in ('--debug', ):
            del argv[i]
            loglevel = logging.DEBUG
        elif argv[i] in ('--info', ):
            del argv[i]
            loglevel = logging.INFO
        else:
            i += 1
    logging.basicConfig(format = logformat,
                        level = loglevel,
                        stream = sys.stderr)
    if False:
        logging.debug("xxx debug")
        logging.info("xxx info")
        logging.warning("xxx warn")
        logging.error("xxx error")


def nbbmain(argv):
    """nbb main program"""
    logmain(argv)
    pkgpythondir = "@pkgpythondir@"
    lib_found = False
    logging.debug("pkgpythondir %s", pkgpythondir)
    logging.debug("sys.path %s", sys.path)
    sys.stdout.flush()
    orig_path = sys.path
    for cond, path in [
        (True, orig_path),
        (os.path.exists(pkgpythondir), [pkgpythondir] + orig_path),
        ]:
        if cond:
            sys.path = path
            try:
                import nbblib
                logging.debug("PACKAGE_VERSION from nbb: %s, from nbblib: %s",
                              PACKAGE_VERSION, nbblib.PACKAGE_VERSION)
                assert(nbblib.PACKAGE_VERSION == PACKAGE_VERSION)
                lib_found = True
                break
            except AssertionError:
                logging.debug("Assertion error", exc_info=True)
                sys.path = orig_path
            except ImportError:
                logging.debug("Import error", exc_info=True)
                sys.path = orig_path
    if not lib_found:
        logging.error("nbb: Fatal: Could not import nbblib.")
        logging.shutdown()
        sys.exit(3)
    logging.info("Using nbblib loaded from %s, python prefix %s",
                 os.path.split(sys.modules['nbblib'].__file__)[0], sys.prefix)
    import nbblib.main
    nbblib.main.cmdmain(sys.argv)


if __name__ == '__main__':
    nbbmain(sys.argv)


# vim: syntax=python
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# mode: python
# End: