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/src/fxbarcode/barcode.h" 24 #include "BC_CommonBitArray.h" 25 CBC_CommonBitArray::CBC_CommonBitArray(CBC_CommonBitArray* array) { 26 m_size = array->GetSize(); 27 m_bits.Copy(array->GetBits()); 28 } 29 CBC_CommonBitArray::CBC_CommonBitArray() { 30 m_bits.SetSize(1); 31 m_size = 0; 32 } 33 CBC_CommonBitArray::CBC_CommonBitArray(int32_t size) { 34 m_bits.SetSize((size + 31) >> 5); 35 m_size = size; 36 } 37 CBC_CommonBitArray::~CBC_CommonBitArray() { 38 m_size = 0; 39 } 40 int32_t CBC_CommonBitArray::GetSize() { 41 return m_size; 42 } 43 CFX_Int32Array& CBC_CommonBitArray::GetBits() { 44 return m_bits; 45 } 46 int32_t CBC_CommonBitArray::GetSizeInBytes() { 47 return (m_size + 7) >> 3; 48 } 49 FX_BOOL CBC_CommonBitArray::Get(int32_t i) { 50 return (m_bits[i >> 5] & (1 << (i & 0x1f))) != 0; 51 } 52 void CBC_CommonBitArray::Set(int32_t i) { 53 m_bits[i >> 5] |= 1 << (i & 0x1F); 54 } 55 void CBC_CommonBitArray::Flip(int32_t i) { 56 m_bits[i >> 5] ^= 1 << (i & 0x1F); 57 } 58 void CBC_CommonBitArray::SetBulk(int32_t i, int32_t newBits) { 59 m_bits[i >> 5] = newBits; 60 } 61 void CBC_CommonBitArray::Clear() { 62 FXSYS_memset(&m_bits[0], 0x00, m_bits.GetSize() * sizeof(int32_t)); 63 } 64 FX_BOOL CBC_CommonBitArray::IsRange(int32_t start, 65 int32_t end, 66 FX_BOOL value, 67 int32_t& e) { 68 if (end < start) { 69 e = BCExceptionEndLessThanStart; 70 return FALSE; 71 } 72 if (end == start) { 73 return TRUE; 74 } 75 end--; 76 int32_t firstInt = start >> 5; 77 int32_t lastInt = end >> 5; 78 int32_t i; 79 for (i = firstInt; i <= lastInt; i++) { 80 int32_t firstBit = i > firstInt ? 0 : start & 0x1F; 81 int32_t lastBit = i < lastInt ? 31 : end & 0x1F; 82 int32_t mask; 83 if (firstBit == 0 && lastBit == 31) { 84 mask = -1; 85 } else { 86 mask = 0; 87 for (int32_t j = firstBit; j <= lastBit; j++) { 88 mask |= 1 << j; 89 } 90 } 91 if ((m_bits[i] & mask) != (value ? mask : 0)) { 92 return FALSE; 93 } 94 } 95 return TRUE; 96 } 97 int32_t* CBC_CommonBitArray::GetBitArray() { 98 return &m_bits[0]; 99 } 100 void CBC_CommonBitArray::Reverse() { 101 int32_t* newBits = FX_Alloc(int32_t, m_bits.GetSize()); 102 FXSYS_memset(newBits, 0x00, m_bits.GetSize() * sizeof(int32_t)); 103 int32_t size = m_size; 104 int32_t i; 105 for (i = 0; i < size; i++) { 106 if (Get(size - i - 1)) { 107 newBits[i >> 5] |= 1 << (i & 0x1F); 108 } 109 } 110 FXSYS_memcpy(&m_bits[0], newBits, m_bits.GetSize() * sizeof(int32_t)); 111 FX_Free(newBits); 112 } 113
