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circuits_uart

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Discover and use UARTs and serial ports in Elixir

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circuits_uart src ei_copy decode_boolean.c
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src/ei_copy/decode_boolean.c 

// SPDX-FileCopyrightText: Ericsson AB 1998-2013. All Rights Reserved.

//

// SPDX-License-Identifier: Apache-2.0

#include <string.h>

#include "eidef.h"

#include "eiext.h"

#include "putget.h"



/* c non-zero -> erlang "true" atom, otherwise "false" */

int ei_decode_boolean(const char *buf, int *index, int *p)

{

  char tbuf[6];

  int t;



  if (ei_decode_atom_as(buf, index, tbuf, sizeof(tbuf), ERLANG_ASCII, NULL, NULL) < 0)

      return -1;



  if (memcmp(tbuf, "true", 5) == 0)

      t = 1;

  else if (memcmp(tbuf, "false", 6) == 0)

      t = 0;

  else

      return -1;

      

  if (p) *p = t;

  return 0; 

}