#!/usr/bin/env python

import sys, os
import BaseHTTPServer
from SimpleHTTPServer import SimpleHTTPRequestHandler

def setup_options():
    ''' Create command line options '''
    from argparse import ArgumentParser

    parser=ArgumentParser()
    parser.add_argument("-p",type=int,dest="port",default=8000,
                          help="Server port (Default: %(default)s)")
    parser.add_argument("-a",type=str,dest="address",default="",
                          help="Server bind address. Use localhost for privacy. Defaults to all interfaces.")
    parser.add_argument("rootpath",type=str,action="store",default=os.path.abspath('.'),nargs='?',
                              help="Root path of the server")
    options=parser.parse_args()
    if not os.path.exists(options.rootpath):
        parser.error("Path does not exist")
    options.rootpath = os.path.abspath(options.rootpath)
    return options


def serve(options):
    """ Run the web server """
    HandlerClass = SimpleHTTPRequestHandler
    ServerClass  = BaseHTTPServer.HTTPServer
    Protocol     = "HTTP/1.0"

    server_address = (options.address, options.port)

    os.chdir(options.rootpath)

    HandlerClass.protocol_version = Protocol
    httpd = ServerClass(server_address, HandlerClass)

    sa = httpd.socket.getsockname()
    print "Serving http://"+ sa[0]+ ":"+ str(sa[1])+ "/"
    try:
        httpd.serve_forever()
    except KeyboardInterrupt:
        httpd.server_close()
    except OSError:
        httpd.server_close()

if __name__ == "__main__":
    options=setup_options()
    serve(options)