1/*
2 * Copyright 2011 Google Inc. All Rights Reserved.
3 *
4 * Licensed under the Apache License, Version 2.0 (the "License");
5 * you may not use this file except in compliance with the License.
6 * You may obtain a copy of the License at
7 *
8 *      http://www.apache.org/licenses/LICENSE-2.0
9 *
10 * Unless required by applicable law or agreed to in writing, software
11 * distributed under the License is distributed on an "AS IS" BASIS,
12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
13 * See the License for the specific language governing permissions and
14 * limitations under the License.
15 */
16
17#include "sfntly/data/growable_memory_byte_array.h"
18
19#include <limits.h>
20#include <string.h>
21
22#include <algorithm>
23
24namespace sfntly {
25
26GrowableMemoryByteArray::GrowableMemoryByteArray()
27    : ByteArray(0, INT_MAX, true) {
28  // Note: We did not set an initial size of array like Java because STL
29  //       implementation will determine the best strategy.
30}
31
32GrowableMemoryByteArray::~GrowableMemoryByteArray() {}
33
34int32_t GrowableMemoryByteArray::CopyTo(OutputStream* os,
35                                        int32_t offset,
36                                        int32_t length) {
37  assert(os);
38  os->Write(&b_, offset, length);
39  return length;
40}
41
42void GrowableMemoryByteArray::InternalPut(int32_t index, byte_t b) {
43  if ((size_t)index >= b_.size()) {
44    b_.resize((size_t)(index + 1));
45  }
46  b_[index] = b;
47}
48
49int32_t GrowableMemoryByteArray::InternalPut(int32_t index,
50                                             byte_t* b,
51                                             int32_t offset,
52                                             int32_t length) {
53  if ((size_t)index + length >= b_.size()) {
54    // Note: We grow one byte more than Java version. VC debuggers shows
55    //       data better this way.
56    b_.resize((size_t)(index + length + 1));
57  }
58  std::copy(b + offset, b + offset + length, b_.begin() + index);
59  return length;
60}
61
62byte_t GrowableMemoryByteArray::InternalGet(int32_t index) {
63  return b_[index];
64}
65
66int32_t GrowableMemoryByteArray::InternalGet(int32_t index,
67                                             byte_t* b,
68                                             int32_t offset,
69                                             int32_t length) {
70  memcpy(b + offset, &(b_[0]) + index, length);
71  return length;
72}
73
74void GrowableMemoryByteArray::Close() {
75  b_.clear();
76}
77
78byte_t* GrowableMemoryByteArray::Begin() {
79  return &(b_[0]);
80}
81
82}  // namespace sfntly
83