1 files changed, 55 insertions, 0 deletions
diff --git a/lib/nghttp3_vec.c b/lib/nghttp3_vec.c
new file mode 100644
index 0000000..ab58ff5
--- /dev/null
+++ b/lib/nghttp3_vec.c
@@ -0,0 +1,55 @@
+/*
+ * nghttp3
+ *
+ * Copyright (c) 2019 nghttp3 contributors
+ * Copyright (c) 2018 ngtcp2 contributors
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining
+ * a copy of this software and associated documentation files (the
+ * "Software"), to deal in the Software without restriction, including
+ * without limitation the rights to use, copy, modify, merge, publish,
+ * distribute, sublicense, and/or sell copies of the Software, and to
+ * permit persons to whom the Software is furnished to do so, subject to
+ * the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be
+ * included in all copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
+ * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
+ * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
+ * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE
+ * LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
+ * OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
+ * WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
+ */
+#include "nghttp3_vec.h"
+#include "nghttp3_macro.h"
+
+uint64_t nghttp3_vec_len(const nghttp3_vec *vec, size_t n) {
+  size_t i;
+  uint64_t res = 0;
+
+  for (i = 0; i < n; ++i) {
+    res += vec[i].len;
+  }
+
+  return res;
+}
+
+int64_t nghttp3_vec_len_varint(const nghttp3_vec *vec, size_t n) {
+  uint64_t res = 0;
+  size_t len;
+  size_t i;
+
+  for (i = 0; i < n; ++i) {
+    len = vec[i].len;
+    if (len > NGHTTP3_MAX_VARINT - res) {
+      return -1;
+    }
+
+    res += len;
+  }
+
+  return (int64_t)res;
+}