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
24 namespace sfntly {
25
GrowableMemoryByteArray()26 GrowableMemoryByteArray::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
~GrowableMemoryByteArray()32 GrowableMemoryByteArray::~GrowableMemoryByteArray() {}
33
CopyTo(OutputStream * os,int32_t offset,int32_t length)34 int32_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
InternalPut(int32_t index,byte_t b)42 void 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
InternalPut(int32_t index,byte_t * b,int32_t offset,int32_t length)49 int32_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
InternalGet(int32_t index)62 byte_t GrowableMemoryByteArray::InternalGet(int32_t index) {
63 return b_[index];
64 }
65
InternalGet(int32_t index,byte_t * b,int32_t offset,int32_t length)66 int32_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
Close()74 void GrowableMemoryByteArray::Close() {
75 b_.clear();
76 }
77
Begin()78 byte_t* GrowableMemoryByteArray::Begin() {
79 return &(b_[0]);
80 }
81
82 } // namespace sfntly
83