str_json.c File Reference

Simple json strings creation. More...

#include <string.h>
#include <malloc.h>
#include <assert.h>
#include <stdio.h>
#include <stdarg.h>
#include "str_json.h"

Include dependency graph for str_json.c:

Functions
int	str_json_create (t_str_json *str_json, size_t size_bytes)
	Init a string. More...
int	str_json_destroy (t_str_json *str_json)
	Free a string. More...
void	str_json_clear (t_str_json *str_json)
	Clear a string. More...
size_t	str_json_concat (t_str_json *str_json_dest, const char *source_c_str)
	Copy the content of source_c_str to str_json_dest. More...
size_t	str_json_printf (t_str_json *str_json_dest, const char *format,...)
	Composes a string with the same text that would be printed if format was used on printf,. More...

Variables
const char	fmt_error [] = "{ \"result\": \"%s\" }"
const char	fmt_det_point [] = "{\"id\":%d, \"size\":%.2f, \"corners\": [{\"x\":%.2f,\"y\":%.2f},{\"x\":%.2f,\"y\":%.2f},{\"x\":%.2f,\"y\":%.2f},{\"x\":%.2f,\"y\":%.2f}], \"center\": {\"x\":%.2f,\"y\":%.2f} }"
const char	fmt_det_point_pose [] = "{\"id\":%d, \"size\":%.2f, \"corners\": [{\"x\":%.2f,\"y\":%.2f},{\"x\":%.2f,\"y\":%.2f},{\"x\":%.2f,\"y\":%.2f},{\"x\":%.2f,\"y\":%.2f}], \"center\": {\"x\":%.2f,\"y\":%.2f}, \"pose\": { \"R\": [[%f,%f,%f],[%f,%f,%f],[%f,%f,%f]], \"t\": [%f,%f,%f], \"e\": %f, %s } }"

Detailed Description

Simple json strings creation.

Author

Nuno Pereira; CMU (this file)

Date

Jul, 2020

Function Documentation

str_json_clear()

void str_json_clear

(

t_str_json *

str_json

)

Clear a string.

Clear a string.

Parameters

str_json

t_str_json structure of the string to clear

Clear a string.

str_json_concat()

size_t str_json_concat	(	t_str_json *	str_json_dest,
		const char *	source_c_str
	)

Copy the content of source_c_str to str_json_dest.

Copy the content of source_c_str to str_json_dest.

Copies up to the terminating null-character, or no more space in dest A terminating null character is always appended to dest.str. IMPORTANT: dest is assumed to be null-terminated

Parameters

str_json_dest	the destination t_str_json structure with the destination string info
source_c_str	a null-terminated c string (char *) to the source string

Returns

the length, in bytes, of the new string

Copy the content of source_c_str to str_json_dest.

str_json_create()

int str_json_create	(	t_str_json *	str_json,
		size_t	size_bytes
	)

Init a string.

Init a string.

Parameters

str_json	t_str_json structure to hold the string info
size_bytes	size of the string to allocate

Returns

0=success; -1 on error

Warning

Declare strings with: t_str_json a_str = STR_JSON_INITIALIZER;

Do not call str_json_create() on a string you already created without destroying it

Init a string.

str_json_destroy()

int str_json_destroy

(

t_str_json *

str_json

)

Free a string.

Free a string.

Parameters

str_json

t_str_json structure with the string info

Returns

0=success; -1 on error

Free a string.

str_json_printf()

size_t str_json_printf	(	t_str_json *	str_json_dest,
		const char *	format,
			...
	)

Composes a string with the same text that would be printed if format was used on printf,.

Composes a string with the same text that would be printed if format was used on printf,.

Parameters

str_json_dest	the destination t_str_json structure with the destination string info
format	a format string
...	additional arguments

Returns

The number of characters that would have been written if str_json_dest had been sufficiently large, not counting the terminating null character.

Composes a string with the same text that would be printed if format was used on printf,.