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* Simple JSON parser and generator.

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* Simple HTTP webservice with support for both receiving and sending HTTP requests.
* json-ws example that optionally push sensor data to COSM over IPv6.
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Joakim Eriksson 2012-06-02 18:24:29 +02:00 • committed by Niclas Finne
parent f177284a73
commit 51b73127e9
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/*
* Copyright (c) 2011-2012, Swedish Institute of Computer Science.
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
* 3. Neither the name of the Institute nor the names of its contributors
* may be used to endorse or promote products derived from this software
* without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE INSTITUTE AND CONTRIBUTORS ``AS IS'' AND
* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
* ARE DISCLAIMED. IN NO EVENT SHALL THE INSTITUTE OR CONTRIBUTORS BE LIABLE
* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
* SUCH DAMAGE.
*
* This file is part of the Contiki operating system.
*/
/**
* \file
* JSON output generation
* \author
* Niclas Finne <nfi@sics.se>
* Joakim Eriksson <joakime@sics.se>
*/
#ifndef __JSONTREE_H__
#define __JSONTREE_H__
#include "contiki-conf.h"
#include "json.h"
#ifdef JSONTREE_CONF_MAX_DEPTH
#define JSONTREE_MAX_DEPTH JSONTREE_CONF_MAX_DEPTH
#else
#define JSONTREE_MAX_DEPTH 10
#endif /* JSONTREE_CONF_MAX_DEPTH */
struct jsontree_context {
struct jsontree_value *values[JSONTREE_MAX_DEPTH];
uint16_t index[JSONTREE_MAX_DEPTH];
int (* putchar)(int);
uint8_t depth;
uint8_t path;
int callback_state;
};
struct jsontree_value {
uint8_t type;
/* followed by a value */
};
struct jsontree_string {
uint8_t type;
const char *value;
};
struct jsontree_int {
uint8_t type;
int value;
};
/* NOTE: the jsontree_callback set will receive a jsonparse state */
struct jsonparse_state;
struct jsontree_callback {
uint8_t type;
int (* output)(struct jsontree_context *js_ctx);
int (* set)(struct jsontree_context *js_ctx, struct jsonparse_state *parser);
};
struct jsontree_pair {
const char *name;
struct jsontree_value *value;
};
struct jsontree_object {
uint8_t type;
uint8_t count;
struct jsontree_pair *pairs;
};
struct jsontree_array {
uint8_t type;
uint8_t count;
struct jsontree_value **values;
};
#define JSONTREE_STRING(text) {JSON_TYPE_STRING, (text)}
#define JSONTREE_PAIR(name, value) {(name), (struct jsontree_value *)(value)}
#define JSONTREE_CALLBACK(output, set) {JSON_TYPE_CALLBACK, (output), (set)}
#define JSONTREE_OBJECT(name, ...) \
static struct jsontree_pair jsontree_pair_##name[] = {__VA_ARGS__}; \
static struct jsontree_object name = { \
JSON_TYPE_OBJECT, \
sizeof(jsontree_pair_##name)/sizeof(struct jsontree_pair), \
jsontree_pair_##name }
#define JSONTREE_OBJECT_EXT(name, ...) \
static struct jsontree_pair jsontree_pair_##name[] = {__VA_ARGS__}; \
struct jsontree_object name = { \
JSON_TYPE_OBJECT, \
sizeof(jsontree_pair_##name)/sizeof(struct jsontree_pair), \
jsontree_pair_##name }
void jsontree_setup(struct jsontree_context *js_ctx,
struct jsontree_value *root, int (* putchar)(int));
void jsontree_reset(struct jsontree_context *js_ctx);
const char *jsontree_path_name(const struct jsontree_context *js_ctx,
int depth);
void jsontree_write_int(const struct jsontree_context *js_ctx, int value);
void jsontree_write_atom(const struct jsontree_context *js_ctx,
const char *text);
void jsontree_write_string(const struct jsontree_context *js_ctx,
const char *text);
int jsontree_print_next(struct jsontree_context *js_ctx);
struct jsontree_value *jsontree_find_next(struct jsontree_context *js_ctx,
int type);
#endif /* __JSONTREE_H__ */