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 2007 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
23 #include "xfa/fxbarcode/common/BC_CommonBitArray.h"
24 #include "xfa/fxbarcode/utils.h"
25
CBC_CommonBitArray(CBC_CommonBitArray * array)26 CBC_CommonBitArray::CBC_CommonBitArray(CBC_CommonBitArray* array) {
27 m_size = array->GetSize();
28 m_bits.Copy(array->GetBits());
29 }
CBC_CommonBitArray()30 CBC_CommonBitArray::CBC_CommonBitArray() {
31 m_bits.SetSize(1);
32 m_size = 0;
33 }
CBC_CommonBitArray(int32_t size)34 CBC_CommonBitArray::CBC_CommonBitArray(int32_t size) {
35 m_bits.SetSize((size + 31) >> 5);
36 m_size = size;
37 }
~CBC_CommonBitArray()38 CBC_CommonBitArray::~CBC_CommonBitArray() {
39 m_size = 0;
40 }
GetSize()41 int32_t CBC_CommonBitArray::GetSize() {
42 return m_size;
43 }
GetBits()44 CFX_ArrayTemplate<int32_t>& CBC_CommonBitArray::GetBits() {
45 return m_bits;
46 }
GetSizeInBytes()47 int32_t CBC_CommonBitArray::GetSizeInBytes() {
48 return (m_size + 7) >> 3;
49 }
Get(int32_t i)50 bool CBC_CommonBitArray::Get(int32_t i) {
51 return (m_bits[i >> 5] & (1 << (i & 0x1f))) != 0;
52 }
Set(int32_t i)53 void CBC_CommonBitArray::Set(int32_t i) {
54 m_bits[i >> 5] |= 1 << (i & 0x1F);
55 }
Flip(int32_t i)56 void CBC_CommonBitArray::Flip(int32_t i) {
57 m_bits[i >> 5] ^= 1 << (i & 0x1F);
58 }
SetBulk(int32_t i,int32_t newBits)59 void CBC_CommonBitArray::SetBulk(int32_t i, int32_t newBits) {
60 m_bits[i >> 5] = newBits;
61 }
Clear()62 void CBC_CommonBitArray::Clear() {
63 FXSYS_memset(&m_bits[0], 0x00, m_bits.GetSize() * sizeof(int32_t));
64 }
IsRange(int32_t start,int32_t end,bool value,int32_t & e)65 bool CBC_CommonBitArray::IsRange(int32_t start,
66 int32_t end,
67 bool value,
68 int32_t& e) {
69 if (end < start) {
70 e = BCExceptionEndLessThanStart;
71 return false;
72 }
73 if (end == start) {
74 return true;
75 }
76 end--;
77 int32_t firstInt = start >> 5;
78 int32_t lastInt = end >> 5;
79 int32_t i;
80 for (i = firstInt; i <= lastInt; i++) {
81 int32_t firstBit = i > firstInt ? 0 : start & 0x1F;
82 int32_t lastBit = i < lastInt ? 31 : end & 0x1F;
83 int32_t mask;
84 if (firstBit == 0 && lastBit == 31) {
85 mask = -1;
86 } else {
87 mask = 0;
88 for (int32_t j = firstBit; j <= lastBit; j++) {
89 mask |= 1 << j;
90 }
91 }
92 if ((m_bits[i] & mask) != (value ? mask : 0)) {
93 return false;
94 }
95 }
96 return true;
97 }
GetBitArray()98 int32_t* CBC_CommonBitArray::GetBitArray() {
99 return &m_bits[0];
100 }
Reverse()101 void CBC_CommonBitArray::Reverse() {
102 int32_t* newBits = FX_Alloc(int32_t, m_bits.GetSize());
103 FXSYS_memset(newBits, 0x00, m_bits.GetSize() * sizeof(int32_t));
104 int32_t size = m_size;
105 int32_t i;
106 for (i = 0; i < size; i++) {
107 if (Get(size - i - 1)) {
108 newBits[i >> 5] |= 1 << (i & 0x1F);
109 }
110 }
111 FXSYS_memcpy(&m_bits[0], newBits, m_bits.GetSize() * sizeof(int32_t));
112 FX_Free(newBits);
113 }
114