diff options
| -rw-r--r-- | demo.c | 76 |
1 files changed, 53 insertions, 23 deletions
@@ -10,57 +10,87 @@ #define NUM_TOKENS 20 -static void json_dump_obj(jsontok_t *obj, const unsigned char *js) { +static void json_dump_obj(jsontok_t *obj, const char *js) { size_t len; - printf("[%d,%d]", obj->start, obj->end); - len = (size_t) (obj->end - obj->start); + if (obj->end < 0 || obj->start < 0) { + return; + } + + len = obj->end - obj->start; + + printf("[%d,%d]\t", obj->start, obj->end); char *type; switch (obj->type) { case JSON_OTHER: - type = "other"; + type = "(?)"; break; case JSON_NUMBER: - type = "number"; + type = "(N)"; break; case JSON_STRING: - type = "string"; + type = "(S)"; break; case JSON_ARRAY: - type = "array"; + type = "(A)"; break; case JSON_OBJECT: - type = "object"; + type = "(O)"; break; } - printf(" %s ", type); + printf("%s ", type); - if (len > 0) { - char *s = strndup((const char *) &js[obj->start], len); - printf("%s", s); - free(s); - } - printf("\n"); + char *s = strndup((const char *) &js[obj->start], len); + printf("%s\n", s); + free(s); } -int main(void) { +int main(int argc, char *argv[]) { int i; jsontok_t tokens[NUM_TOKENS]; + FILE *f; + int filesize = 0; + char *js = NULL; + + if (argc != 2) { + fprintf(stderr, "Usage: ./demo <file.js>\n"); + exit(EXIT_SUCCESS); + } - const unsigned char *js = (unsigned char *) - "{" - "\"foo\": \"bar\"," - "\"bar\": [1,2, 3]," - "\"obj\": { \"true\": false}" - "}"; + f = fopen(argv[1], "r"); + if (f == NULL) { + fprintf(stderr, "Failed to open file `%s`\n", argv[1]); + exit(EXIT_FAILURE); + } + + while (1) { + int r; + char buf[BUFSIZ]; + r = fread(buf, 1, BUFSIZ, f); + if (r <= 0) { + break; + } + js = (char *) realloc(js, filesize + r); + if (js == NULL) { + fprintf(stderr, "Cannot allocate anough memory\n"); + fclose(f); + exit(EXIT_FAILURE); + } + memcpy(js + filesize, buf, r); + filesize += r; + } + + fclose(f); - jsmn_parse(js, tokens, NUM_TOKENS, NULL); + jsmn_parse((unsigned char *) js, tokens, NUM_TOKENS, NULL); for (i = 0; i<NUM_TOKENS; i++) { json_dump_obj(&tokens[i], js); } + free(js); + return 0; } |