You can not select more than 25 topics
Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
164 lines
4.7 KiB
164 lines
4.7 KiB
/******************************************************************************
|
|
* Copyright 2013-2014 Espressif Systems (Wuxi)
|
|
*
|
|
* FileName: user_json.c
|
|
*
|
|
* Description: JSON format set up and parse.
|
|
* Check your hardware transmation while use this data format.
|
|
*
|
|
* Modification history:
|
|
* 2014/5/09, v1.0 create this file.
|
|
*******************************************************************************/
|
|
#include "ets_sys.h"
|
|
#include "osapi.h"
|
|
#include "os_type.h"
|
|
#include "mem.h"
|
|
|
|
#include "user_json.h"
|
|
|
|
LOCAL char *json_buf;
|
|
LOCAL int pos;
|
|
LOCAL int size;
|
|
|
|
/******************************************************************************
|
|
* FunctionName : find_json_path
|
|
* Description : find the JSON format tree's path
|
|
* Parameters : json -- A pointer to a JSON set up
|
|
* path -- A pointer to the JSON format tree's path
|
|
* Returns : A pointer to the JSON format tree
|
|
*******************************************************************************/
|
|
struct jsontree_value *ICACHE_FLASH_ATTR
|
|
find_json_path(struct jsontree_context *json, const char *path)
|
|
{
|
|
struct jsontree_value *v;
|
|
const char *start;
|
|
const char *end;
|
|
int len;
|
|
|
|
v = json->values[0];
|
|
start = path;
|
|
|
|
do {
|
|
end = (const char *)os_strstr(start, "/");
|
|
|
|
if (end == start) {
|
|
break;
|
|
}
|
|
|
|
if (end != NULL) {
|
|
len = end - start;
|
|
end++;
|
|
} else {
|
|
len = os_strlen(start);
|
|
}
|
|
|
|
if (v->type != JSON_TYPE_OBJECT) {
|
|
v = NULL;
|
|
} else {
|
|
struct jsontree_object *o;
|
|
int i;
|
|
|
|
o = (struct jsontree_object *)v;
|
|
v = NULL;
|
|
|
|
for (i = 0; i < o->count; i++) {
|
|
if (os_strncmp(start, o->pairs[i].name, len) == 0) {
|
|
v = o->pairs[i].value;
|
|
json->index[json->depth] = i;
|
|
json->depth++;
|
|
json->values[json->depth] = v;
|
|
json->index[json->depth] = 0;
|
|
break;
|
|
}
|
|
}
|
|
}
|
|
|
|
start = end;
|
|
} while (end != NULL && *end != '\0' && v != NULL);
|
|
|
|
json->callback_state = 0;
|
|
return v;
|
|
}
|
|
|
|
/******************************************************************************
|
|
* FunctionName : json_putchar
|
|
* Description : write the value to the JSON format tree
|
|
* Parameters : c -- the value which write the JSON format tree
|
|
* Returns : result
|
|
*******************************************************************************/
|
|
int ICACHE_FLASH_ATTR
|
|
json_putchar(int c)
|
|
{
|
|
if (json_buf != NULL && pos <= size) {
|
|
json_buf[pos++] = c;
|
|
return c;
|
|
}
|
|
|
|
return 0;
|
|
}
|
|
|
|
/******************************************************************************
|
|
* FunctionName : json_ws_send
|
|
* Description : set up the JSON format tree for string
|
|
* Parameters : tree -- A pointer to the JSON format tree
|
|
* path -- A pointer to the JSON format tree's path
|
|
* pbuf -- A pointer for the data sent
|
|
* Returns : none
|
|
*******************************************************************************/
|
|
void ICACHE_FLASH_ATTR
|
|
json_ws_send(struct jsontree_value *tree, const char *path, char *pbuf)
|
|
{
|
|
struct jsontree_context json;
|
|
/* maxsize = 128 bytes */
|
|
json_buf = (char *)os_malloc(jsonSize);
|
|
|
|
/* reset state and set max-size */
|
|
/* NOTE: packet will be truncated at 512 bytes */
|
|
pos = 0;
|
|
size = jsonSize;
|
|
|
|
json.values[0] = (struct jsontree_value *)tree;
|
|
jsontree_reset(&json);
|
|
find_json_path(&json, path);
|
|
json.path = json.depth;
|
|
json.putchar = json_putchar;
|
|
|
|
while (jsontree_print_next(&json) && json.path <= json.depth);
|
|
|
|
json_buf[pos] = 0;
|
|
os_memcpy(pbuf, json_buf, pos);
|
|
os_free(json_buf);
|
|
}
|
|
|
|
/******************************************************************************
|
|
* FunctionName : json_parse
|
|
* Description : parse the data as a JSON format
|
|
* Parameters : js_ctx -- A pointer to a JSON set up
|
|
* ptrJSONMessage -- A pointer to the data
|
|
* Returns : none
|
|
*******************************************************************************/
|
|
void ICACHE_FLASH_ATTR
|
|
json_parse(struct jsontree_context *json, char *ptrJSONMessage)
|
|
{
|
|
/* Set value */
|
|
struct jsontree_value *v;
|
|
struct jsontree_callback *c;
|
|
struct jsontree_callback *c_bak = NULL;
|
|
|
|
while ((v = jsontree_find_next(json, JSON_TYPE_CALLBACK)) != NULL) {
|
|
c = (struct jsontree_callback *)v;
|
|
|
|
if (c == c_bak) {
|
|
continue;
|
|
}
|
|
|
|
c_bak = c;
|
|
|
|
if (c->set != NULL) {
|
|
struct jsonparse_state js;
|
|
|
|
jsonparse_setup(&js, ptrJSONMessage, os_strlen(ptrJSONMessage));
|
|
c->set(json, &js);
|
|
}
|
|
}
|
|
}
|
|
|