#! /usr/bin/env python
# (c) Copyright 2010-2015. CodeWeavers, Inc.

import os

# Portable which(1) implementation
def which(path, app):
    """Looks for an executable in the specified directory list.

    path is an os.pathsep-separated list of directories and app is the
    executable name. If app contains a path separator then path is ignored.
    If the file is not found, then None is returned.
    """
    if os.path.isabs(app):
        if os.path.isfile(app) and os.access(app, os.X_OK):
            return app
    elif os.sep in app or (os.altsep and os.altsep in app):
        app_path = os.path.join(os.getcwd(), app)
        if os.path.isfile(app_path) and os.access(app_path, os.X_OK):
            return app_path
    else:
        for directory in path.split(os.pathsep):
            if directory == "":
                continue
            app_path = os.path.join(directory, app)
            if os.path.isfile(app_path) and os.access(app_path, os.X_OK):
                return app_path
    return None
import sys
def locate_cx_root():
    """Locate where CrossOver is installed.

    We start by locating our own python script file and walking back up the
    path, traversing symbolic links on the way. Then we verify what we have
    found the right directory by checking for the presence of the cxmenu
    script.
    """
    # pylint: disable=I0011,W0601,W0603
    global CX_ROOT
    if "CX_DEVELOP_ROOT" in os.environ:
        CX_ROOT = os.environ["CX_DEVELOP_ROOT"]
        return

    # figure out argv0
    argv0 = which(os.environ["PATH"], sys.argv[0])
    if not argv0:
        argv0 = sys.argv[0]
        if not os.path.isabs(argv0):
            argv0 = os.path.join(os.getcwd(), argv0)

    # traverse the symbolic links
    dir0 = os.path.dirname(argv0)
    while True:
        if dir0.endswith("/lib"):
            bindir = dir0[0:-3] + "bin"
        else:
            bindir = dir0
        landmark = os.path.join(bindir, "cxmenu")
        if os.path.isfile(landmark):
            break
        if not os.path.islink(argv0):
            break
        argv0 = os.readlink(argv0)
        if not os.path.isabs(argv0):
            argv0 = os.path.join(dir0, argv0)
        dir0 = os.path.dirname(argv0)

    # compute CX_ROOT
    CX_ROOT = os.path.dirname(os.path.normpath(bindir))

    # check CX_ROOT
    landmark = os.path.join(CX_ROOT, "bin", "cxmenu")
    if not os.path.isfile(landmark) or not os.access(landmark, os.X_OK):
        sys.stderr.write("%s:error: could not find CrossOver in '%s'\n" % (os.path.dirname(sys.argv[0]), CX_ROOT))
        sys.exit(1)

    sys.path.append(os.path.join(CX_ROOT, "lib", "python"))

locate_cx_root()
import cxutils
cxutils.CX_ROOT = CX_ROOT


import sys

# pylint: disable=W0611
import checkpython
import cxopt
import cxtiemain

def main():
    # Parse the command line options
    opt_parser = cxopt.Parser(usage="%prog --register | --unregister | --install | --uninstall | --open TIEFILE | --help",
                              description="Finds and runs the appropriate CrossOver product to run a .tie file.")
    opt_parser.add_option('--register', action='store_true', dest='register', help="Registers this product and installs its tie handler if needed.")
    opt_parser.add_option('--unregister', action='store_true', dest='unregister', help="Unregisters this product and restores another tie handler if appropriate.")
    opt_parser.add_option('--cxroot', dest='cxroot', help="Specifies a different installed product to register or unregister.")
    opt_parser.add_option('--install', action='store_true', dest='install', help="Install the .tie associations for this program.")
    opt_parser.add_option('--uninstall', action='store_true', dest='uninstall', help="Remove the .tie associations for this program.")
    opt_parser.add_option('--open', dest='open_file', help="Open the given .tie file.")
    (options, args) = opt_parser.parse_args()

    # Do more checks and provide defaults
    if not options.register and not options.unregister and \
            not options.install and not options.uninstall and \
            not options.open_file:
        opt_parser.error("You must specify an action, such as --open")
    if sum(x and 1 or 0 for x in (options.register, options.unregister, options.install, options.uninstall, options.open_file)) >= 2:
        opt_parser.error("You must specify exactly one action")
    if args:
        opt_parser.error("unexpected argument '%s'" % args[0])
    if options.cxroot is not None and not options.register and not options.unregister:
        opt_parser.error("--cxroot must be combined with --register or --unregister")

    if options.register:
        return cxtiemain.register(options.cxroot)
    elif options.unregister:
        return cxtiemain.unregister(options.cxroot)
    elif options.install:
        return cxtiemain.install()
    elif options.uninstall:
        return cxtiemain.uninstall()
    elif options.open_file:
        return cxtiemain.open_file(options.open_file)
    return 0

if __name__ == "__main__":
    sys.exit(main())