//
// carray.i
// Dave Beazley
// March 24, 1996
//
// This SWIG library file supports C arrays of various datatypes.
// These arrays are probably *not* compatible with scripting languages
// but they are compatible with C functions.

%{

#include <string.h>

/* Create an integer array of given size */

static int *array_int(int size) {
  return (int *) malloc(size*sizeof(int));
}

static int get_int(int *array_int, int index) {
  if (array_int) 
    return (array_int[index]);
  else 
    return 0;
}

static int set_int(int *array_int, int index, int val) {
  if (array_int)
    return (array_int[index] = val);
  else
    return 0;
}

/* Create double precision arrays */

static double *array_double(int size) {
  return (double *) malloc(size*sizeof(double));
}

static double get_double(double *array_double, int index) {
  if (array_double) 
    return (array_double[index]);
  else 
    return 0;
}

static double set_double(double *array_double, int index, double val) {
  if (array_double)
    return (array_double[index] = val);
  else
    return 0;
}


/* Create float arrays */

static float *array_float(int size) {
  return (float *) malloc(size*sizeof(float));
}

static float get_float(float *array_float, int index) {
  if (array_float) 
    return (array_float[index]);
  else 
    return 0;
}

static float set_float(float *array_float, int index, float val) {
  if (array_float)
    return (array_float[index] = val);
  else
    return 0;
}


/* Create byte arrays */

typedef unsigned char byte;

static byte *array_byte(int size) {
  return (byte *) malloc(size*sizeof(byte));
}

static byte get_byte(byte *array_byte, int index) {
  if (array_byte) 
    return (array_byte[index]);
  else 
    return 0;
}

static byte set_byte(byte *array_byte, int index, byte val) {
  if (array_byte)
    return (array_byte[index] = val);
  else
    return 0;
}

/* Create character string arrays */

static char **array_string(int size) {
  char **a;
  int i;

  a = (char **) malloc(size*sizeof(char *));
  for (i = 0; i < size; i++)
    a[i] = 0;
  return a;
}

static char *get_string(char **array_string, int index) {
  if (array_string) 
    return (array_string[index]);
  else 
    return "";
}

static char *set_string(char **array_string, int index, char * val) {
  if (array_string) {
    if (array_string[index]) free(array_string[index]);
    if (strlen(val) > 0) {
      array_string[index] = (char *) malloc(strlen(val)+1);
      strcpy(array_string[index],val);
      return array_string[index];
    } else {
      array_string[index] = 0;
      return val;
    }
  }
  else
    return val;
  }

%}

%section "Array Operations"

int *array_int(int size);
/* Creates an integer array of size elements.  Integers are the same
size as the C int type. */

int get_int(int *array_int, int index) ;
/* Return the integer in array_int[index] */

int set_int(int *array_int, int index, int ival);
/* Sets array_int[index] = ival. Returns it's value so you
can use this function in an expression. */

/* Create double precision arrays */

double *array_double(int size);
/* Creates an array of double precision floats. */

double get_double(double *array_double, int index);
/* Return the double in array_double[index] */

double set_double(double *array_double, int index, double dval);
/* Sets array_double[index] = dval.  Returns it's value */


float *array_float(int size);
/* Creates an array of float precision floats. */

float get_float(float *array_float, int index);
/* Return the float in array_float[index] */

float set_float(float *array_float, int index, float dval);
/* Sets array_float[index] = dval.  Returns it's value */

typedef unsigned char byte;

byte *array_byte(int nbytes);
/* Creates a byte array.  A byte is defined as an unsigned char. */

byte get_byte(byte *array_byte, int index);
/* Returns array_byte[index] */

byte set_byte(byte *array_byte, int index, byte val);
/* Sets array_byte[index] = val.  Returns it's new value */

char **array_string(int size);
/* Creates a string array.  A string is array is the same as char ** in C */

char *get_string(char **array_string, int index);
/* Returns character string in array_string[index]. If that entry is
NULL, returns an empty string */

char *set_string(char **array_string, int index, char * string);
/* Sets array_string[index] = string.  string must be a 0-terminated
ASCII string.  If string is "" then this will create a NULL pointer. */