const struct sj_conf_entry *sj_conf_find_schema_entry(
const char *path, const struct sj_conf_entry *obj) {
const char *sep = strchr(path, '.');
int kl = (sep == 0 ? (int) strlen(path) : (sep - path));
for (int i = 1; i <= obj->num_desc; i++) {
const struct sj_conf_entry *e = obj + i;
if (strncmp(path, e->key, kl) == 0 && ((int) strlen(e->key) == kl)) {
if (path[kl] == '\0') return e;
if (e->type != CONF_TYPE_OBJECT) return NULL;
return sj_conf_find_schema_entry(path + kl + 1, e);
}
}
return NULL;
}
void sj_conf_parse_cb(void *data, const char *path,
const struct json_token *tok) {
struct parse_ctx *ctx = (struct parse_ctx *) data;
if (!ctx->result) return;
if (path[0] != '.') {
if (path[0] == '\0') return; /* Last entry, the entire object */
LOG(LL_ERROR, ("Not an object"));
ctx->result = false;
return;
}
path++;
const struct sj_conf_entry *e = sj_conf_find_schema_entry(path, ctx->schema);
if (e == NULL) {
LOG(LL_INFO, ("Extra key: [%s]", path));
return;
}
char *vp = (((char *) ctx->cfg) + e->offset);
switch (e->type) {
case CONF_TYPE_INT: {
if (tok->type != JSON_TYPE_NUMBER) {
LOG(LL_ERROR, ("[%s] is not a number", path));
ctx->result = false;
return;
}
*((int *) vp) = strtod(tok->ptr, NULL);
break;
}
case CONF_TYPE_BOOL: {
if (tok->type != JSON_TYPE_TRUE && tok->type != JSON_TYPE_FALSE) {
LOG(LL_ERROR, ("[%s] is not a boolean", path));
ctx->result = false;
return;
}
*((int *) vp) = (tok->type == JSON_TYPE_TRUE);
break;
}
case CONF_TYPE_STRING: {
if (tok->type != JSON_TYPE_STRING) {
LOG(LL_ERROR, ("[%s] is not a string", path));
ctx->result = false;
return;
}
char **sp = (char **) vp;
char *s = NULL;
if (*sp != NULL) free(*sp);
if (tok->len > 0) {
s = (char *) malloc(tok->len + 1);
if (s == NULL) {
ctx->result = false;
return;
}
/* TODO(rojer): Unescape the string. */
memcpy(s, tok->ptr, tok->len);
s[tok->len] = '\0';
} else {
/* Empty string - keep value as NULL. */
}
*sp = s;
break;
}
case CONF_TYPE_OBJECT: {
/* Ignore */
return;
}
}
LOG(LL_DEBUG, ("Set [%s] = [%.*s]", path, (int) tok->len, tok->ptr));
}