/*
 *
 * Copyright 2015, Google Inc.
 * All rights reserved.
 *
 * 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
 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
 * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
 *
 */

#include "rb_byte_buffer.h"

#include <ruby/ruby.h>

#include <grpc/grpc.h>
#include <grpc/support/slice.h>
#include "rb_grpc.h"

grpc_byte_buffer* grpc_rb_s_to_byte_buffer(char *string, size_t length) {
  gpr_slice slice = gpr_slice_from_copied_buffer(string, length);
  grpc_byte_buffer *buffer = grpc_byte_buffer_create(&slice, 1);
  gpr_slice_unref(slice);
  return buffer;
}

VALUE grpc_rb_byte_buffer_to_s(grpc_byte_buffer *buffer) {
  size_t length = 0;
  char *string = NULL;
  size_t offset = 0;
  grpc_byte_buffer_reader *reader = NULL;
  gpr_slice next;
  if (buffer == NULL) {
    return Qnil;

  }
  length = grpc_byte_buffer_length(buffer);
  string = xmalloc(length + 1);
  reader = grpc_byte_buffer_reader_create(buffer);
  while (grpc_byte_buffer_reader_next(reader, &next) != 0) {
    memcpy(string + offset, GPR_SLICE_START_PTR(next), GPR_SLICE_LENGTH(next));
    offset += GPR_SLICE_LENGTH(next);
  }
  return rb_str_new(string, length);
}
