// Protocol Buffers - Google's data interchange format
// Copyright 2008 Google Inc.  All rights reserved.
// https://developers.google.com/protocol-buffers/
//
// Redistribution and use in source and binary forms, with or without
// modification, are permitted provided that the following conditions are
// met:
//
//     * Redistributions of source code must retain the above copyright
// notice, this list of conditions and the following disclaimer.
//     * Redistributions in binary form must reproduce the above
// copyright notice, this list of conditions and the following disclaimer
// in the documentation and/or other materials provided with the
// distribution.
//     * Neither the name of Google Inc. nor the names of its
// contributors may be used to endorse or promote products derived from
// this software without specific prior written permission.
//
// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
// "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
// LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
// A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
// OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
// SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
// LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
// DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
// THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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package com.google.protobuf.kotlin

import com.google.protobuf.ByteString
import java.nio.ByteBuffer

/** Encodes this String into a sequence of UTF-8 bytes and returns the result as a [ByteString]. */
fun String.toByteStringUtf8(): ByteString =
  ByteString.copyFromUtf8(this) // symmetric from ByteString.toStringUtf8()

/** Concatenates the given [ByteString] to this one. */
operator fun ByteString.plus(other: ByteString): ByteString = concat(other)

/** Gets the byte at [index]. */
operator fun ByteString.get(index: Int): Byte = byteAt(index)

/** Checks if this is not empty. */
fun ByteString.isNotEmpty(): Boolean = !isEmpty()

/** Returns a copy of this [ByteArray] as an immutable [ByteString]. */
fun ByteArray.toByteString(): ByteString = ByteString.copyFrom(this)

/** Copies the remaining bytes from this [ByteBuffer] to a [ByteString]. */
fun ByteBuffer.toByteString(): ByteString = ByteString.copyFrom(this)
