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// Copyright 2014 PDFium Authors. All rights reserved.
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
// Original code copyright 2014 Foxit Software Inc. http://www.foxitsoftware.com
// Original code is licensed as follows:
/*
* Copyright 2007 ZXing authors
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
#include "fxbarcode/common/BC_CommonBitArray.h"
#include <utility>
#include "fxbarcode/utils.h"
CBC_CommonBitArray::CBC_CommonBitArray(CBC_CommonBitArray* array) {
m_size = array->GetSize();
m_bits = array->GetBits();
}
CBC_CommonBitArray::CBC_CommonBitArray() {
m_bits.resize(1);
m_size = 0;
}
CBC_CommonBitArray::CBC_CommonBitArray(int32_t size) {
m_bits.resize((size + 31) >> 5);
m_size = size;
}
CBC_CommonBitArray::~CBC_CommonBitArray() {}
size_t CBC_CommonBitArray::GetSize() {
return m_size;
}
std::vector<int32_t>& CBC_CommonBitArray::GetBits() {
return m_bits;
}
size_t CBC_CommonBitArray::GetSizeInBytes() {
return (m_size + 7) >> 3;
}
bool CBC_CommonBitArray::Get(size_t i) {
return (m_bits[i >> 5] & (1 << (i & 0x1f))) != 0;
}
void CBC_CommonBitArray::Set(size_t i) {
m_bits[i >> 5] |= 1 << (i & 0x1F);
}
void CBC_CommonBitArray::Flip(size_t i) {
m_bits[i >> 5] ^= 1 << (i & 0x1F);
}
void CBC_CommonBitArray::SetBulk(size_t i, int32_t newBits) {
m_bits[i >> 5] = newBits;
}
void CBC_CommonBitArray::Clear() {
for (auto& value : m_bits)
value = 0;
}
bool CBC_CommonBitArray::IsRange(size_t start,
size_t end,
bool value,
int32_t& e) {
if (end < start) {
e = BCExceptionEndLessThanStart;
return false;
}
if (end == start) {
return true;
}
end--;
int32_t firstInt = start >> 5;
int32_t lastInt = end >> 5;
int32_t i;
for (i = firstInt; i <= lastInt; i++) {
int32_t firstBit = i > firstInt ? 0 : start & 0x1F;
int32_t lastBit = i < lastInt ? 31 : end & 0x1F;
int32_t mask;
if (firstBit == 0 && lastBit == 31) {
mask = -1;
} else {
mask = 0;
for (int32_t j = firstBit; j <= lastBit; j++) {
mask |= 1 << j;
}
}
if ((m_bits[i] & mask) != (value ? mask : 0)) {
return false;
}
}
return true;
}
int32_t* CBC_CommonBitArray::GetBitArray() {
return m_bits.data();
}
void CBC_CommonBitArray::Reverse() {
std::vector<int32_t> newBits(m_bits.size());
for (size_t i = 0; i < m_size; i++) {
if (Get(m_size - i - 1))
newBits[i >> 5] |= 1 << (i & 0x1F);
}
m_bits = std::move(newBits);
}
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