// Copyright 2014 PDFium Authors. All rights reserved.
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// Use of this source code is governed by a BSD-style license that can be
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// found in the LICENSE file.
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// Original code copyright 2014 Foxit Software Inc. http://www.foxitsoftware.com
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// Original code is licensed as follows:
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/*
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* Copyright 2007 ZXing authors
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*/
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#include "xfa/fxbarcode/common/BC_CommonBitArray.h"
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#include "xfa/fxbarcode/utils.h"
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CBC_CommonBitArray::CBC_CommonBitArray(CBC_CommonBitArray* array) {
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m_size = array->GetSize();
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m_bits.Copy(array->GetBits());
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}
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CBC_CommonBitArray::CBC_CommonBitArray() {
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m_bits.SetSize(1);
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m_size = 0;
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}
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CBC_CommonBitArray::CBC_CommonBitArray(int32_t size) {
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m_bits.SetSize((size + 31) >> 5);
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m_size = size;
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}
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CBC_CommonBitArray::~CBC_CommonBitArray() {
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m_size = 0;
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}
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int32_t CBC_CommonBitArray::GetSize() {
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return m_size;
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}
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CFX_Int32Array& CBC_CommonBitArray::GetBits() {
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return m_bits;
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}
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int32_t CBC_CommonBitArray::GetSizeInBytes() {
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return (m_size + 7) >> 3;
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}
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FX_BOOL CBC_CommonBitArray::Get(int32_t i) {
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return (m_bits[i >> 5] & (1 << (i & 0x1f))) != 0;
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}
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void CBC_CommonBitArray::Set(int32_t i) {
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m_bits[i >> 5] |= 1 << (i & 0x1F);
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}
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void CBC_CommonBitArray::Flip(int32_t i) {
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m_bits[i >> 5] ^= 1 << (i & 0x1F);
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}
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void CBC_CommonBitArray::SetBulk(int32_t i, int32_t newBits) {
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m_bits[i >> 5] = newBits;
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}
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void CBC_CommonBitArray::Clear() {
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FXSYS_memset(&m_bits[0], 0x00, m_bits.GetSize() * sizeof(int32_t));
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}
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FX_BOOL CBC_CommonBitArray::IsRange(int32_t start,
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int32_t end,
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FX_BOOL value,
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int32_t& e) {
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if (end < start) {
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e = BCExceptionEndLessThanStart;
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return FALSE;
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}
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if (end == start) {
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return TRUE;
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}
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end--;
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int32_t firstInt = start >> 5;
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int32_t lastInt = end >> 5;
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int32_t i;
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for (i = firstInt; i <= lastInt; i++) {
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int32_t firstBit = i > firstInt ? 0 : start & 0x1F;
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int32_t lastBit = i < lastInt ? 31 : end & 0x1F;
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int32_t mask;
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if (firstBit == 0 && lastBit == 31) {
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mask = -1;
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} else {
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mask = 0;
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for (int32_t j = firstBit; j <= lastBit; j++) {
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mask |= 1 << j;
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}
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}
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if ((m_bits[i] & mask) != (value ? mask : 0)) {
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return FALSE;
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}
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}
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return TRUE;
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}
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int32_t* CBC_CommonBitArray::GetBitArray() {
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return &m_bits[0];
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}
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void CBC_CommonBitArray::Reverse() {
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int32_t* newBits = FX_Alloc(int32_t, m_bits.GetSize());
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FXSYS_memset(newBits, 0x00, m_bits.GetSize() * sizeof(int32_t));
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int32_t size = m_size;
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int32_t i;
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for (i = 0; i < size; i++) {
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if (Get(size - i - 1)) {
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newBits[i >> 5] |= 1 << (i & 0x1F);
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}
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}
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FXSYS_memcpy(&m_bits[0], newBits, m_bits.GetSize() * sizeof(int32_t));
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FX_Free(newBits);
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}
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