#!/usr/bin/python
from RepSys import Error, config
import getpass
import sys, os
import logging
#import commands

log = logging.getLogger("repsys")

# Our own version of commands' getstatusoutput(). We have a commands
# module directory, so we can't import Python's standard module
def commands_getstatusoutput(cmd):
    """Return (status, output) of executing cmd in a shell."""
    import os
    pipe = os.popen('{ ' + cmd + '; } 2>&1', 'r')
    text = pipe.read()
    sts = pipe.close()
    if sts is None: sts = 0
    if text[-1:] == '\n': text = text[:-1]
    return sts, text

def execcmd(*cmd, **kwargs):
    cmdstr = " ".join(cmd)
    if kwargs.get("show"):
        status = os.system(cmdstr)
        output = ""
    else:
        status, output = commands_getstatusoutput("LANG=C LANGUAGE=C LC_ALL=C "+cmdstr)
    if status != 0 and not kwargs.get("noerror"):
        raise Error, "command failed: %s\n%s\n" % (cmdstr, output)
    if config.getbool("global", "verbose", 0):
        print cmdstr
        sys.stdout.write(output)
    return status, output

def get_auth(username=None, password=None):
    set_username = 1
    set_password = 1
    if not username:
        username = config.get("auth", "username")
        if not username:
            username = raw_input("username: ")
        else:
            set_username = 0
    if not password:
        password = config.get("auth", "password")
        if not password:
            password = getpass.getpass("password: ")
        else:
            set_password = 0
    if set_username:
        config.set("auth", "username", username)
    if set_password:
        config.set("auth", "password", password)
    return username, password

def get_helper(name):
    """Tries to find the path of a helper script

    It first looks if the helper has been explicitly defined in
    configuration, if not, falls back to the default helper path, which can
    also be defined in configuration file(s).
    """
    helperdir = config.get("helper", "prefix", "/usr/share/repsys")
    hpath = config.get("helper", name, None) or \
        os.path.join(helperdir, name)
    if not os.path.isfile(hpath):
        log.warn("providing unexistent helper: %s", hpath)
    return hpath

# vim:et:ts=4:sw=4