Function navigate

src/foundation/yaml.c:329–365

Navigate to a node by dot-separated path. */

/* Navigate to a node by dot-separated path. */
static const cbm_yaml_node_t *navigate(const cbm_yaml_node_t *root, const char *path) {
    if (!root || !path) {
        return NULL;
    }

    const cbm_yaml_node_t *cur = root;
    char buf[CBM_SZ_256];
    const char *p = path;

    while (*p) {
        const char *dot = strchr(p, '.');
        int seg_len;
        if (dot) {
            seg_len = (int)(dot - p);
        } else {
            seg_len = (int)strlen(p);
        }
        if (seg_len <= 0 || seg_len >= (int)sizeof(buf)) {
            return NULL;
        }

        memcpy(buf, p, (size_t)seg_len);
        buf[seg_len] = '\0';

        cur = find_child(cur, buf);
        if (!cur) {
            return NULL;
        }

        p += seg_len;
        if (*p == '.') {
            p++;
        }
    }

    return cur;
}

const char *cbm_yaml_get_str(const cbm_yaml_node_t *root, const char *path) {
    const cbm_yaml_node_t *node = navigate(root, path);