str.h

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/*
 * str.h -- strings to be used in the CoAP library
 *
 * Copyright (C) 2010-2011 Olaf Bergmann <bergmann@tzi.org>
 *
 * This file is part of the CoAP library libcoap. Please see README for terms
 * of use.
 */

#ifndef COAP_STR_H_
#define COAP_STR_H_

#include <string.h>


typedef struct coap_string_t {
  size_t length;    
  uint8_t *s;       
} coap_string_t;

typedef struct coap_str_const_t {
  size_t length;    
  const uint8_t *s; 
} coap_str_const_t;

#define COAP_SET_STR(st,l,v) { (st)->length = (l), (st)->s = (v); }

typedef struct coap_binary_t {
  size_t length;    
  uint8_t *s;       
} coap_binary_t;

coap_string_t *coap_new_string(size_t size);

void coap_delete_string(coap_string_t *string);

coap_str_const_t *coap_new_str_const(const uint8_t *data, size_t size);

void coap_delete_str_const(coap_str_const_t *string);

#ifdef __cplusplus
namespace libcoap {
  struct CoAPStrConst : coap_str_const_t {
    operator coap_str_const_t *() { return this; }
  };
}
#define coap_make_str_const(CStr)                                       \
  libcoap::CoAPStrConst{sizeof(CStr)-1, reinterpret_cast<const uint8_t *>(CStr)}
#else /* __cplusplus */
#define coap_make_str_const(string)                                     \
  (&(coap_str_const_t){sizeof(string)-1,(const uint8_t *)(string)})
#endif  /* __cplusplus */

#define coap_string_equal(string1,string2) \
        ((string1)->length == (string2)->length && ((string1)->length == 0 || \
         memcmp((string1)->s, (string2)->s, (string1)->length) == 0))

#endif /* COAP_STR_H_ */