ncf

#!/usr/bin/env python

# This will become the main command line tool for ncf

import os
import sys
import shutil

DEFAULT_NCF_DIR = '/usr/share/ncf'

NCF_DIR = os.path.dirname(os.path.realpath(__file__))
NCF_TREE_DIR  = os.path.join(NCF_DIR, 'tree')
NCF_TOOLS_DIR = os.path.join(NCF_DIR, 'tools')

sys.path[0:0] = [NCF_TOOLS_DIR, DEFAULT_NCF_DIR]

import ncf

def usage():
  print "ncf init [path]"

def get_ncf_dir():
  # Try the directory this script is run from first (in case of a git clone)
  # Otherwise use the system default path
  target_dirs = [ NCF_TREE_DIR, os.path.join(DEFAULT_NCF_DIR, 'tree') ]
  for dir in target_dirs:
    if os.path.isdir(dir):
      return dir

  # If none found, return None
  return None

def init(args):

  # First argument is dir name, unless not specified then we use current dir
  if len(args) == 0:
    init_dir = os.getcwd()
    print "INFO: No path specified, using current directory"
  else:
    init_dir = args[0]

  print "INFO: Initialising in " + init_dir

  # Check if this directory is already a ncf instance
  if os.path.isdir(init_dir) and set(ncf.dirs).intersection(set(os.listdir(init_dir))):
    print "ERROR: It looks like this directory is already initialized. Aborting"
    exit(2)

  for component_dir in ncf.dirs:
    target_dir = os.path.join(init_dir, component_dir)
    os.makedirs(target_dir)
    shutil.copy(os.path.join(get_ncf_dir(), component_dir, "README.md"), target_dir)

  print "INFO: Success"

if __name__ == '__main__':
  if len(sys.argv) <= 1:
    usage()
    exit(1)

  if sys.argv[1] == "init":
    init(sys.argv[2:])