#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include "jsmn.h"
/*
* A small example of jsmn parsing when JSON structure is known and number of
* tokens is predictable.
*/
static int jsoneq(const char *json, jsmntok_t *tok, const char *s) {
if (tok->type == JSMN_STRING && (int) strlen(s) == tok->end - tok->start &&
strncmp(json + tok->start, s, tok->end - tok->start) == 0) {
return 0;
}
return -1;
}
char * jsmn_StringReader(){
char * a;
char * b;
FILE *f1;
f1=fopen("library.json","r");
b=(char *)malloc(sizeof(char));
a=(char*)malloc(sizeof(char));
while(1){
fgets(a,sizeof(a),f1);
if(feof(f1))break;
b=(char*)realloc(b,strlen(b)+strlen(a));
//printf("\n%d\n",strlen(a));
strncat(b,a,strlen(a));
}
fclose(f1);
return b ;
}
void jsmn_init(jsmn_parser *parser);
int jsmn_parse(jsmn_parser *parser, const char *js, size_t len,jsmntok_t *tokens, unsigned int num_tokens);
int main() {
int i;
int r;
jsmn_parser p;
jsmntok_t t[128]; /* We expect no more than 128 tokens */
jsmn_init(&p);
char * JSON_STRING=jsmn_StringReader();
printf("%s\n",JSON_STRING);
r = jsmn_parse(&p, JSON_STRING, strlen(JSON_STRING), t, sizeof(t)/sizeof(t[0]));
if (r < 0) {
printf("Failed to parse JSON: %d\n", r);
return 1;
}
/* Assume the top-level element is an object */
if (r < 1 || t[0].type != JSMN_OBJECT) {
printf("Object expected\n");
return 1;
}
#ifdef DEBUG_MODE
printf("r의 값은 %d입니다",r);
#endif
/* Loop over all keys of the root object */
for (i = 1; i < r; i++) {
if (jsoneq(JSON_STRING, &t[i], "name") == 0) {
/* We may use strndup() to fetch string value */
printf("- Name: %.*s\n", t[i+1].end-t[i+1].start,
JSON_STRING + t[i+1].start);
i++;
#ifdef DEBUG_MODE
printf("User의 token은 %d번째입니다",i);
#endif
} else if (jsoneq(JSON_STRING, &t[i], "keywords") == 0) {
/* We may additionally check if the value is either "true" or "false" */
printf("- Keywords: %.*s\n", t[i+1].end-t[i+1].start,
JSON_STRING + t[i+1].start);
i++;
#ifdef DEBUG_MODE
printf("Admin의 token은 %d번째입니다",i);
#endif
} else if (jsoneq(JSON_STRING, &t[i], "description") == 0) {
/* We may want to do strtol() here to get numeric value */
printf("- Description: %.*s\n", t[i+1].end-t[i+1].start,
JSON_STRING + t[i+1].start);
i++;
#ifdef DEBUG_MODE
printf("Uid의 token은 %d번째입니다",i);
#endif
}
else if (jsoneq(JSON_STRING, &t[i], "type") == 0) {
/* We may want to do strtol() here to get numeric value */
printf("- type: %.*s\n", t[i+1].end-t[i+1].start,
JSON_STRING + t[i+1].start);
i++;
#ifdef DEBUG_MODE
#endif
}
else if (jsoneq(JSON_STRING, &t[i], "url") == 0) {
/* We may want to do strtol() here to get numeric value */
printf("- url: %.*s\n", t[i+1].end-t[i+1].start,
JSON_STRING + t[i+1].start);
i++;
#ifdef DEBUG_MODE
printf("Uid의 token은 %d번째입니다",i);
#endif
}
else if (jsoneq(JSON_STRING, &t[i], "frameworks") == 0) {
/* We may want to do strtol() here to get numeric value */
printf("- Frameworks: %.*s\n", t[i+1].end-t[i+1].start,
JSON_STRING + t[i+1].start);
i++;
#ifdef DEBUG_MODE
printf("Uid의 token은 %d번째입니다",i);
#endif
}
else if (jsoneq(JSON_STRING, &t[i], "platforms") == 0) {
/* We may want to do strtol() here to get numeric value */
printf("- Platfroms: %.*s\n", t[i+1].end-t[i+1].start,
JSON_STRING + t[i+1].start);
i++;
#ifdef DEBUG_MODE
printf("Uid의 token은 %d번째입니다",i);
#endif
}
else if (jsoneq(JSON_STRING, &t[i], "exclude") == 0) {
/* We may want to do strtol() here to get numeric value */
printf("- Excludes: %.*s\n", t[i+1].end-t[i+1].start,
JSON_STRING + t[i+1].start);
i++;
#ifdef DEBUG_MODE
printf("Uid의 token은 %d번째입니다",i);
#endif
}
else if (jsoneq(JSON_STRING, &t[i], "examples") == 0) {
int j;
printf("- Exampleis:\n");
if (t[i+1].type != JSMN_ARRAY) {
continue; /* We expect groups to be an array of strings */
}
for (j = 0; j < t[i+1].size; j++) {
jsmntok_t *g = &t[i+j+2];
printf(" * %.*s\n", g->end - g->start, JSON_STRING + g->start);
}
i += t[i+1].size + 1;
}
else if (jsoneq(JSON_STRING, &t[i], "repository") == 0) {
int j;
printf("- Repository:\n");
if (t[i+1].type != JSMN_ARRAY) {
continue; /* We expect groups to be an array of strings */
}
for (j = 0; j < t[i+1].size; j++) {
jsmntok_t *g = &t[i+j+2];
printf(" * %.*s\n", g->end - g->start, JSON_STRING + g->start);
}
i += t[i+1].size + 1;
#ifdef DEBUG_MODE
printf("Object인 groups의 token은 %d번째입니다",i);
#endif
} else {
printf("Unexpected key: %.*s\n", t[i].end-t[i].start,
JSON_STRING + t[i].start);
}
}
return EXIT_SUCCESS;
}
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