source: SHX/trunk/SeismicHandler/bin/SH @ 496

#! /usr/bin/env python

"""
Helper script for executing SH scripts. In future this will also offer an
interactive command line interface.
"""

import os
import sys
from StringIO import StringIO
try:
    import readline
except:
    # readline module is not available on Windows OS
    pass
from SeismicHandler.modules.parse import Script, Symbol, Switches
from SeismicHandler.basics.error import ShxError
from SeismicHandler.config import Settings
from SeismicHandler.basics.codes import LICENCE, VERSION


def run(filename):
    path, script = os.path.split(filename)

    # add path information
    if path:
        s = Script(open(sys.argv[1]), Symbol(), Switches(), searchpath=[path])
    else:
        s = Script(open(sys.argv[1]), Symbol(), Switches())

    s.run()


def interactive():
    s = Script(StringIO(""), Symbol(), Switches())
    while True:
        try:
            inp = raw_input("|shx> ")
        except (EOFError, KeyboardInterrupt):
            quit()

        s.feed(StringIO(inp + os.linesep))
        try:
            s.run()
        except ShxError:
            if Settings.swSherrstop:
                quit(1)
        except NotImplementedError:
            print "Command currently not available!"


if __name__ == "__main__":
    if len(sys.argv) > 1:
        run(sys.argv[1])
    else:
        print LICENCE % VERSION
        interactive()