diff options
Diffstat (limited to 'example/simple.c')
| -rw-r--r-- | example/simple.c | 115 |
1 files changed, 57 insertions, 58 deletions
diff --git a/example/simple.c b/example/simple.c index 1254575..aeb9cf4 100644 --- a/example/simple.c +++ b/example/simple.c @@ -1,7 +1,7 @@ -#include "../jsmn.h" #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 @@ -9,69 +9,68 @@ */ static const char *JSON_STRING = - "{\"user\": \"johndoe\", \"admin\": false, \"uid\": 1000,\n " - "\"groups\": [\"users\", \"wheel\", \"audio\", \"video\"]}"; + "{\"user\": \"johndoe\", \"admin\": false, \"uid\": 1000,\n " + "\"groups\": [\"users\", \"wheel\", \"audio\", \"video\"]}"; 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; + 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; } int main() { - int i; - int r; - jsmn_parser p; - jsmntok_t t[128]; /* We expect no more than 128 tokens */ + int i; + int r; + jsmn_parser p; + jsmntok_t t[128]; /* We expect no more than 128 tokens */ - jsmn_init(&p); - 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; - } + jsmn_init(&p); + 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; - } + /* Assume the top-level element is an object */ + if (r < 1 || t[0].type != JSMN_OBJECT) { + printf("Object expected\n"); + return 1; + } - /* Loop over all keys of the root object */ - for (i = 1; i < r; i++) { - if (jsoneq(JSON_STRING, &t[i], "user") == 0) { - /* We may use strndup() to fetch string value */ - printf("- User: %.*s\n", t[i + 1].end - t[i + 1].start, - JSON_STRING + t[i + 1].start); - i++; - } else if (jsoneq(JSON_STRING, &t[i], "admin") == 0) { - /* We may additionally check if the value is either "true" or "false" */ - printf("- Admin: %.*s\n", t[i + 1].end - t[i + 1].start, - JSON_STRING + t[i + 1].start); - i++; - } else if (jsoneq(JSON_STRING, &t[i], "uid") == 0) { - /* We may want to do strtol() here to get numeric value */ - printf("- UID: %.*s\n", t[i + 1].end - t[i + 1].start, - JSON_STRING + t[i + 1].start); - i++; - } else if (jsoneq(JSON_STRING, &t[i], "groups") == 0) { - int j; - printf("- Groups:\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 { - printf("Unexpected key: %.*s\n", t[i].end - t[i].start, - JSON_STRING + t[i].start); - } - } - return EXIT_SUCCESS; + /* Loop over all keys of the root object */ + for (i = 1; i < r; i++) { + if (jsoneq(JSON_STRING, &t[i], "user") == 0) { + /* We may use strndup() to fetch string value */ + printf("- User: %.*s\n", t[i+1].end-t[i+1].start, + JSON_STRING + t[i+1].start); + i++; + } else if (jsoneq(JSON_STRING, &t[i], "admin") == 0) { + /* We may additionally check if the value is either "true" or "false" */ + printf("- Admin: %.*s\n", t[i+1].end-t[i+1].start, + JSON_STRING + t[i+1].start); + i++; + } else if (jsoneq(JSON_STRING, &t[i], "uid") == 0) { + /* We may want to do strtol() here to get numeric value */ + printf("- UID: %.*s\n", t[i+1].end-t[i+1].start, + JSON_STRING + t[i+1].start); + i++; + } else if (jsoneq(JSON_STRING, &t[i], "groups") == 0) { + int j; + printf("- Groups:\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 { + printf("Unexpected key: %.*s\n", t[i].end-t[i].start, + JSON_STRING + t[i].start); + } + } + return EXIT_SUCCESS; } |