1 // Copyright 2014 PDFium Authors. All rights reserved.
2 // Use of this source code is governed by a BSD-style license that can be
3 // found in the LICENSE file.
4
5 // Original code copyright 2014 Foxit Software Inc. http://www.foxitsoftware.com
6 // Original code is licensed as follows:
7 /*
8 * Copyright 2008 ZXing authors
9 *
10 * Licensed under the Apache License, Version 2.0 (the "License");
11 * you may not use this file except in compliance with the License.
12 * You may obtain a copy of the License at
13 *
14 * http://www.apache.org/licenses/LICENSE-2.0
15 *
16 * Unless required by applicable law or agreed to in writing, software
17 * distributed under the License is distributed on an "AS IS" BASIS,
18 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
19 * See the License for the specific language governing permissions and
20 * limitations under the License.
21 */
22 #include "fxbarcode/common/BC_CommonByteArray.h"
23
24 #include <algorithm>
25
26 #include "core/fxcrt/fx_memory.h"
27
CBC_CommonByteArray()28 CBC_CommonByteArray::CBC_CommonByteArray() {
29 m_bytes = nullptr;
30 m_size = 0;
31 m_index = 0;
32 }
CBC_CommonByteArray(int32_t size)33 CBC_CommonByteArray::CBC_CommonByteArray(int32_t size) {
34 m_size = size;
35 m_bytes = FX_Alloc(uint8_t, size);
36 memset(m_bytes, 0, size);
37 m_index = 0;
38 }
CBC_CommonByteArray(uint8_t * byteArray,int32_t size)39 CBC_CommonByteArray::CBC_CommonByteArray(uint8_t* byteArray, int32_t size) {
40 m_size = size;
41 m_bytes = FX_Alloc(uint8_t, size);
42 memcpy(m_bytes, byteArray, size);
43 m_index = size;
44 }
~CBC_CommonByteArray()45 CBC_CommonByteArray::~CBC_CommonByteArray() {
46 FX_Free(m_bytes);
47 }
At(int32_t index) const48 int32_t CBC_CommonByteArray::At(int32_t index) const {
49 return m_bytes[index] & 0xff;
50 }
Set(int32_t index,int32_t value)51 void CBC_CommonByteArray::Set(int32_t index, int32_t value) {
52 m_bytes[index] = (uint8_t)value;
53 }
Size() const54 int32_t CBC_CommonByteArray::Size() const {
55 return m_size;
56 }
IsEmpty() const57 bool CBC_CommonByteArray::IsEmpty() const {
58 return m_size == 0;
59 }
AppendByte(int32_t value)60 void CBC_CommonByteArray::AppendByte(int32_t value) {
61 if (m_size == 0 || m_index >= m_size) {
62 int32_t newSize = std::max(32, m_size << 1);
63 Reserve(newSize);
64 }
65 m_bytes[m_index] = (uint8_t)value;
66 m_index++;
67 }
Reserve(int32_t capacity)68 void CBC_CommonByteArray::Reserve(int32_t capacity) {
69 if (!m_bytes || m_size < capacity) {
70 uint8_t* newArray = FX_Alloc(uint8_t, capacity);
71 if (m_bytes) {
72 memcpy(newArray, m_bytes, m_size);
73 memset(newArray + m_size, 0, capacity - m_size);
74 } else {
75 memset(newArray, 0, capacity);
76 }
77 FX_Free(m_bytes);
78 m_bytes = newArray;
79 m_size = capacity;
80 }
81 }
Set(const uint8_t * source,int32_t offset,int32_t count)82 void CBC_CommonByteArray::Set(const uint8_t* source,
83 int32_t offset,
84 int32_t count) {
85 FX_Free(m_bytes);
86 m_bytes = FX_Alloc(uint8_t, count);
87 m_size = count;
88 memcpy(m_bytes, source + offset, count);
89 m_index = count;
90 }
Set(std::vector<uint8_t> * source,int32_t offset,int32_t count)91 void CBC_CommonByteArray::Set(std::vector<uint8_t>* source,
92 int32_t offset,
93 int32_t count) {
94 FX_Free(m_bytes);
95 m_bytes = FX_Alloc(uint8_t, count);
96 m_size = count;
97 int32_t i;
98 for (i = 0; i < count; i++) {
99 m_bytes[i] = source->operator[](i + offset);
100 }
101 m_index = m_size;
102 }
103