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jsmn/demo.c

67 lines
1.1 KiB

/* This demo is not needed to be C89-compatible, so for now GCC extensions are
* used */
#define _GNU_SOURCE
#include <stdlib.h>
#include <stdio.h>
#include <string.h>
#include "jsmn.h"
#define NUM_TOKENS 20
static void json_dump_obj(jsontok_t *obj, const unsigned char *js) {
size_t len;
printf("[%d,%d]", obj->start, obj->end);
len = (size_t) (obj->end - obj->start);
char *type;
switch (obj->type) {
case JSON_OTHER:
type = "other";
break;
case JSON_NUMBER:
type = "number";
break;
case JSON_STRING:
type = "string";
break;
case JSON_ARRAY:
type = "array";
break;
case JSON_OBJECT:
type = "object";
break;
}
printf(" %s ", type);
if (len > 0) {
char *s = strndup((const char *) &js[obj->start], len);
printf("%s", s);
free(s);
}
printf("\n");
}
int main(void) {
int i;
jsontok_t tokens[NUM_TOKENS];
const unsigned char *js = (unsigned char *)
"{"
"\"foo\": \"bar\","
"\"bar\": [1,2, 3],"
"\"obj\": { \"true\": false}"
"}";
jsmn_parse(js, tokens, NUM_TOKENS, NULL);
for (i = 0; i<NUM_TOKENS; i++) {
json_dump_obj(&tokens[i], js);
}
return 0;
}