unikernel/duniverse/bstr/lib/bytes_labels.ml

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+(*
+ * Copyright (c) 2024 Romain Calascibetta <romain.calascibetta@gmail.com>
+ *
+ * Permission to use, copy, modify, and distribute this software for any
+ * purpose with or without fee is hereby granted, provided that the above
+ * copyright notice and this permission notice appear in all copies.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
+ * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
+ * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
+ * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
+ * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
+ * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
+ * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
+ *)
+
+include Bytes
+
+let[@inline always] blit src ~src_off dst ~dst_off ~len =
+  Bytes.blit src src_off dst dst_off len
+
+let[@inline always] fill t ~off ~len chr = Bytes.fill t off len chr
+
+let[@inline always] blit_to_bytes src ~src_off dst ~dst_off ~len =
+  Bytes.blit src src_off dst dst_off len
+
+let string ?(off = 0) ?len str =
+  let len =
+    match len with Some len -> len | None -> String.length str - off
+  in
+  if len < 0 || off < 0 || off > String.length str - len then
+    invalid_arg "Bytes.string";
+  let buf = String.sub str off len in
+  Bytes.unsafe_of_string buf
+
+let overlap a b = if a == b then Some (Bytes.length a, 0, 0) else None
+let sub t ~off ~len = Bytes.sub t off len
+
+let blit_from_bytes src ~src_off dst ~dst_off ~len =
+  Bytes.blit src src_off dst dst_off len