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/** @file
*
* JSON parsing functions.
*
* Copyright 2016, Dario Lombardo
*
* Wireshark - Network traffic analyzer
* By Gerald Combs <gerald@wireshark.org>
* Copyright 1998 Gerald Combs
*
* SPDX-License-Identifier: GPL-2.0-or-later
*/
#ifndef __WSJSON_H__
#define __WSJSON_H__
#include "ws_symbol_export.h"
#include <inttypes.h>
#include <stdbool.h>
#include "jsmn.h"
#ifdef __cplusplus
extern "C" {
#endif
/**
* Check if a buffer is json an returns true if it is.
*/
WS_DLL_PUBLIC bool json_validate(const uint8_t *buf, const size_t len);
WS_DLL_PUBLIC int json_parse(const char *buf, jsmntok_t *tokens, unsigned int max_tokens);
/**
* Get the pointer to an object belonging to parent object and named as the name variable.
* Returns NULL if not found.
*/
WS_DLL_PUBLIC jsmntok_t *json_get_object(const char *buf, jsmntok_t *parent, const char *name);
/**
* Get the pointer to an array belonging to parent object and named as the name variable.
* Returns NULL if not found.
*/
WS_DLL_PUBLIC jsmntok_t *json_get_array(const char *buf, jsmntok_t *parent, const char *name);
/**
* Get the number of elements of an array.
* Returns -1 if the JSON objecct is not an array.
*/
WS_DLL_PUBLIC int json_get_array_len(jsmntok_t *array);
/**
* Get the pointer to idx element of an array.
* Returns NULL if not found.
*/
WS_DLL_PUBLIC jsmntok_t *json_get_array_index(jsmntok_t *parent, int idx);
/**
* Get the unescaped value of a string object belonging to parent object and named as the name variable.
* Returns NULL if not found. Caution: it modifies input buffer.
*/
WS_DLL_PUBLIC char *json_get_string(char *buf, jsmntok_t *parent, const char *name);
/**
* Get the value of a number object belonging to parent object and named as the name variable.
* Returns false if not found. Caution: it modifies input buffer.
* Scientific notation not supported yet.
*/
WS_DLL_PUBLIC bool json_get_double(char *buf, jsmntok_t *parent, const char *name, double *val);
/**
* Decode the contents of a JSON string value by overwriting the input data.
* Returns true on success and false if invalid characters were encountered.
*/
WS_DLL_PUBLIC bool json_decode_string_inplace(char *text);
#ifdef __cplusplus
}
#endif
#endif
/*
* Editor modelines - https://www.wireshark.org/tools/modelines.html
*
* Local variables:
* c-basic-offset: 4
* tab-width: 8
* indent-tabs-mode: nil
* End:
*
* vi: set shiftwidth=4 tabstop=8 expandtab:
* :indentSize=4:tabSize=8:noTabs=true:
*/
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