#!/usr/bin/env python
"""
__init__.py - Pluvo Standard Library
Author: Sean B. Palmer, inamidst.com
"""

import sys, re, os
sys.path.append('..')
try: from datatypes import Table, Variable, Symbol, String, Number, URI
except ImportError: 
   from pluvo.datatypes import Table, Variable, Symbol, String, Number, URI

def weakFunction(block): 
   if not isinstance(block, Table): 
      return False
   return block.get(String('kind')) == String('Function')

dispatch = {}

dispatch['String'] = String
dispatch['Number'] = Number

def enumer(env, iter): 
   for i, item in enumerate(iter): 
      yield i, item
dispatch['enumerate'] = enumer

def lines(env, filenames): 
   def files(): 
      for filename in filenames: 
         yield str(env.resolve(filename))
   for filename in files(): 
      f = URI(filename)
      for line in f: 
         yield line
dispatch['lines'] = lines

def library(name): 
   try: return dispatch[name]
   except KeyError: 
      try: module = getattr(__import__('library.' + name), name)
      except ImportError: 
         module = getattr(
            getattr(__import__('pluvo.library.' + name), 'library'),
            name
         ) 

      return module.main
      # fn = 'library/' + name + '.py'
      # if os.path.isfile(fn): 
      #    import imp
      #    return imp.load_source(name, fn).main
   raise NameError("No such library function: %s" % name)

def main(): 
   pass

if __name__ == '__main__': 
   main()