/*
 * C interface for Miki Tebeka's num2eng (written in Python)
 * Rick Ratzel
 * 3/1/2004
 *
 * Copyright (c) 2004 Richard L. Ratzel
 * see file "COPYRIGHT" for more details...
 *
 * Additional information on embedding Python can be found at:
 * http://www.python.org/doc/ext/embedding.html
 */

#include <Python.h>

static char runString[10000];
static PyObject* evalModule;
static PyObject* evalDict;
static PyObject* evalVal;
extern int Py_VerboseFlag; /* print out all imports, loaded modules, etc. */
extern int Py_NoSiteFlag;  /* load the site-wide configuration */


char* num2eng( int num ) {

  char* retString = NULL;
  
  if( !Py_IsInitialized() ) {
    Py_VerboseFlag = 0;
    Py_NoSiteFlag = 1;
    Py_Initialize();
    PyRun_SimpleString( (char*)"import num2eng" );
  }

  sprintf( runString, "result = num2eng.num2eng( %d )", num );
  
  PyRun_SimpleString( runString );

  /*
   * evalModule, evalDict, and evalVal are all borrowed references
   * ...no DECREF calls should be made
   */
  evalModule = PyImport_AddModule( (char*)"__main__" );
  evalDict = PyModule_GetDict( evalModule );
  evalVal = PyDict_GetItemString( evalDict, "result" );

  if( evalVal == NULL ) {
    PyErr_Print();
    exit( 1 );

  } else {
    /*
     * PyString_AsString returns char* repr of PyObject, which should not be
     * modified in any way...this should probably be copied for safety
     */
    retString = PyString_AsString( evalVal );
  }

  return retString;
}