API for handling strings and binary data. More...

Collaboration diagram for String handling support:

Data Structures
struct	coap_string_t
	CoAP string data definition. More...

struct	coap_str_const_t
	CoAP string data definition with const data. More...

struct	coap_binary_t
	CoAP binary data definition. More...

struct	coap_bin_const_t
	CoAP binary data definition with const data. More...

union	coap_const_char_ptr_t
	CoAP union for handling signed / unsigned chars. More...

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

#define	COAP_MAX_STR_CONST_FUNC 2

#define	coap_string_equal(string1, string2)
	Compares the two strings for equality.

#define	coap_binary_equal(binary1, binary2)
	Compares the two binary data for equality.

Typedefs
typedef struct coap_string_t	coap_string_t
	CoAP string data definition.

typedef struct coap_str_const_t	coap_str_const_t
	CoAP string data definition with const data.

typedef struct coap_binary_t	coap_binary_t
	CoAP binary data definition.

typedef struct coap_bin_const_t	coap_bin_const_t
	CoAP binary data definition with const data.

Functions
coap_string_t *	coap_new_string (size_t size)
	Returns a new string object with at least size+1 bytes storage allocated.

void	coap_delete_string (coap_string_t *string)
	Deletes the given string and releases any memory allocated.

coap_str_const_t *	coap_new_str_const (const uint8_t *data, size_t size)
	Returns a new const string object with at least size+1 bytes storage allocated, and the provided data copied into the string object.

void	coap_delete_str_const (coap_str_const_t *string)
	Deletes the given const string and releases any memory allocated.

coap_binary_t *	coap_new_binary (size_t size)
	Returns a new binary object with at least size bytes storage allocated.

void	coap_delete_binary (coap_binary_t *binary)
	Deletes the given coap_binary_t object and releases any memory allocated.

coap_binary_t *	coap_resize_binary (coap_binary_t *binary, size_t new_size)
	Resizes the given coap_binary_t object.

coap_bin_const_t *	coap_new_bin_const (const uint8_t *data, size_t size)
	Take the specified byte array (text) and create a coap_bin_const_t * Returns a new const binary object with at least size bytes storage allocated, and the provided data copied into the binary object.

void	coap_delete_bin_const (coap_bin_const_t *binary)
	Deletes the given const binary data and releases any memory allocated.

coap_str_const_t *	coap_make_str_const (const char *string)
	Take the specified byte array (text) and create a coap_str_const_t *.

Detailed Description

API for handling strings and binary data.

Macro Definition Documentation

◆ coap_binary_equal

#define coap_binary_equal	(	binary1,
		binary2
	)

Value:

  ((binary1)->length == (binary2)->length && ((binary1)->length == 0 || \
                                              ((binary1)->s && (binary2)->s && \
                                               memcmp((binary1)->s, (binary2)->s, (binary1)->length) == 0)))

Compares the two binary data for equality.

Parameters

binary1	The first binary data.
binary2	The second binary data.

Returns: 1 if the binary data is equal 0 otherwise.

Definition at line 214 of file coap_str.h.

◆ COAP_MAX_STR_CONST_FUNC

#define COAP_MAX_STR_CONST_FUNC 2

Definition at line 173 of file coap_str.h.

◆ COAP_SET_STR

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

Definition at line 54 of file coap_str.h.

◆ coap_string_equal

#define coap_string_equal	(	string1,
		string2
	)

Value:

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

Compares the two strings for equality.

Parameters

string1	The first string.
string2	The second string.

Returns: 1 if the strings are equal 0 otherwise.

Definition at line 200 of file coap_str.h.

Typedef Documentation

◆ coap_bin_const_t

typedef struct coap_bin_const_t coap_bin_const_t

CoAP binary data definition with const data.

◆ coap_binary_t

typedef struct coap_binary_t coap_binary_t

CoAP binary data definition.

◆ coap_str_const_t

typedef struct coap_str_const_t coap_str_const_t

CoAP string data definition with const data.

◆ coap_string_t

typedef struct coap_string_t coap_string_t

CoAP string data definition.

Function Documentation

◆ coap_delete_bin_const()

void coap_delete_bin_const ( coap_bin_const_t * binary )

Deletes the given const binary data and releases any memory allocated.

Parameters

binary The binary data to free off.

Definition at line 120 of file coap_str.c.

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◆ coap_delete_binary()

void coap_delete_binary ( coap_binary_t * binary )

Deletes the given coap_binary_t object and releases any memory allocated.

Parameters

binary The coap_binary_t object to free off.

Definition at line 105 of file coap_str.c.

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◆ coap_delete_str_const()

void coap_delete_str_const ( coap_str_const_t * string )

Deletes the given const string and releases any memory allocated.

Parameters

string The string to free off.

Definition at line 61 of file coap_str.c.

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◆ coap_delete_string()

void coap_delete_string ( coap_string_t * string )

Deletes the given string and releases any memory allocated.

Parameters

string The string to free off.

Definition at line 46 of file coap_str.c.

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◆ coap_make_str_const()

coap_str_const_t * coap_make_str_const ( const char * string )

Take the specified byte array (text) and create a coap_str_const_t *.

Note: the array is 2 deep as there are up to two callings of coap_make_str_const in a function call. e.g. coap_add_attr(). Caution: If there are local variable assignments, these will cycle around the var[COAP_MAX_STR_CONST_FUNC] set. No current examples do this.

Parameters

string The const string to convert to a coap_str_const_t *

Returns: A pointer to one of two static variables containing the coap_str_const_t * result

Definition at line 66 of file coap_str.c.

◆ coap_new_bin_const()

coap_bin_const_t * coap_new_bin_const	(	const uint8_t *	data,
		size_t	size
	)

Take the specified byte array (text) and create a coap_bin_const_t * Returns a new const binary object with at least size bytes storage allocated, and the provided data copied into the binary object.

The binary data must be released using coap_delete_bin_const().

Parameters

data	The data to put in the new string object.
size	The size to allocate for the binary data.

Returns: A pointer to the new object or NULL on error.

Definition at line 110 of file coap_str.c.

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◆ coap_new_binary()

coap_binary_t * coap_new_binary ( size_t size )

Returns a new binary object with at least size bytes storage allocated.

It is the responsibility of the caller to fill in all the appropriate information. The coap_binary_t object must be released using coap_delete_binary().

Parameters

size	The size to allocate for the binary data.

Returns: A pointer to the new object or NULL on error.

Definition at line 77 of file coap_str.c.

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◆ coap_new_str_const()

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

Returns a new const string object with at least size+1 bytes storage allocated, and the provided data copied into the string object.

The string must be released using coap_delete_str_const().

Parameters

data	The data to put in the new string object.
size	The size to allocate for the binary string data.

Returns: A pointer to the new object or NULL on error.

Definition at line 51 of file coap_str.c.

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◆ coap_new_string()

coap_string_t * coap_new_string ( size_t size )

Returns a new string object with at least size+1 bytes storage allocated.

It is the responsibility of the caller to fill in all the appropriate information. The string must be released using coap_delete_string().

Parameters

size	The size to allocate for the string data.

Returns: A pointer to the new object or NULL on error.

Definition at line 21 of file coap_str.c.

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◆ coap_resize_binary()

coap_binary_t * coap_resize_binary	(	coap_binary_t *	binary,
		size_t	new_size
	)

Resizes the given coap_binary_t object.

It is the responsibility of the caller to fill in all the appropriate additional information.

Note: If there is an error, binary will separately need to be released by coap_delete_binary().

Parameters

binary	The coap_binary_t object to resize.
new_size	The new size to allocate for the binary data.

Returns: A pointer to the new object or NULL on error.

Definition at line 82 of file coap_str.c.

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Data Structures

Macros

Typedefs

Functions

Detailed Description

Macro Definition Documentation

◆ coap_binary_equal

◆ COAP_MAX_STR_CONST_FUNC

◆ COAP_SET_STR

◆ coap_string_equal

Typedef Documentation

◆ coap_bin_const_t

◆ coap_binary_t

◆ coap_str_const_t

◆ coap_string_t

Function Documentation

◆ coap_delete_bin_const()

◆ coap_delete_binary()

◆ coap_delete_str_const()

◆ coap_delete_string()

◆ coap_make_str_const()

◆ coap_new_bin_const()

◆ coap_new_binary()

◆ coap_new_str_const()

◆ coap_new_string()

◆ coap_resize_binary()