u_json.c File Reference

Tiny JSON wrapper around cJSON. More...

#include "u_json.h"
#include <assert.h>
#include <stdio.h>
#include "cjson/cJSON.c"

Include dependency graph for u_json.c:

Functions
const cJSON *	u_json_get (const cJSON *json, const char *f)
	Get a JSON object by string from a JSON object. More...
bool	u_json_get_string_into_array (const cJSON *json, char *out_str, size_t max_size)
	Parse a string from a JSON object into a char array. More...
bool	u_json_get_bool (const cJSON *json, bool *out_bool)
	Parse an bool from a JSON object. More...
bool	u_json_get_int (const cJSON *json, int *out_int)
	Parse an int from a JSON object. More...
bool	u_json_get_double (const cJSON *json, double *out_double)
	Parse a double from a JSON object. More...
bool	u_json_get_float (const cJSON *json, float *out_float)
	Parse a float from a JSON object. More...
bool	u_json_get_vec3 (const cJSON *json, struct xrt_vec3 *out_vec3)
	Parse a vec3 from a JSON object. More...
bool	u_json_get_quat (const cJSON *json, struct xrt_quat *out_quat)
	Parse a quaternion from a JSON object. More...
size_t	u_json_get_float_array (const cJSON *json_array, float *out_array, size_t max_size)
	Parse up to max_size floats from a JSON array. More...
size_t	u_json_get_double_array (const cJSON *json_array, double *out_array, size_t max_size)
	Parse up to max_size doubles from a JSON array. More...

Detailed Description

Tiny JSON wrapper around cJSON.

Author

Jakob Bornecrantz jakob.nosp@m.@col.nosp@m.labor.nosp@m.a.co.nosp@m.m

Ryan Pavlik ryan..nosp@m.pavl.nosp@m.ik@co.nosp@m.llab.nosp@m.ora.c.nosp@m.om

Function Documentation

u_json_get()

const cJSON* u_json_get	(	const cJSON *	json,
		const char *	f
	)

Get a JSON object by string from a JSON object.

Returns

The JSON object with the given name if successful, NULL if not.

u_json_get_bool()

bool u_json_get_bool	(	const cJSON *	json,
		bool *	out_bool
	)

Parse an bool from a JSON object.

Returns

true if successful, false if not.

u_json_get_double()

bool u_json_get_double	(	const cJSON *	json,
		double *	out_double
	)

Parse a double from a JSON object.

Returns

true if successful, false if not.

Referenced by u_json_get_double_array(), and u_json_get_float().

u_json_get_double_array()

size_t u_json_get_double_array	(	const cJSON *	json_array,
		double *	out_array,
		size_t	max_size
	)

Parse up to max_size doubles from a JSON array.

Returns

the number of elements set.

References u_json_get_double().

u_json_get_float()

bool u_json_get_float	(	const cJSON *	json,
		float *	out_float
	)

Parse a float from a JSON object.

Returns

true if successful, false if not.

References u_json_get_double().

Referenced by u_json_get_float_array(), u_json_get_quat(), and u_json_get_vec3().

u_json_get_float_array()

size_t u_json_get_float_array	(	const cJSON *	json_array,
		float *	out_array,
		size_t	max_size
	)

Parse up to max_size floats from a JSON array.

Returns

the number of elements set.

References u_json_get_float().

u_json_get_int()

bool u_json_get_int	(	const cJSON *	json,
		int *	out_int
	)

Parse an int from a JSON object.

Returns

true if successful, false if not.

u_json_get_quat()

bool u_json_get_quat	(	const cJSON *	json,
		struct xrt_quat *	out_quat
	)

Parse a quaternion from a JSON object.

Returns

true if successful, false if not.

References u_json_get_float(), xrt_quat::w, xrt_quat::x, xrt_quat::y, and xrt_quat::z.

u_json_get_string_into_array()

bool u_json_get_string_into_array	(	const cJSON *	json,
		char *	out,
		size_t	max_size
	)

Parse a string from a JSON object into a char array.

Returns

true if successful, false if string does not fit in array or any other error.

u_json_get_vec3()

bool u_json_get_vec3	(	const cJSON *	json,
		struct xrt_vec3 *	out_vec3
	)

Parse a vec3 from a JSON object.

Returns

true if successful, false if not.

References u_json_get_float(), xrt_vec3::x, xrt_vec3::y, and xrt_vec3::z.