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 2010 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 "fxbarcode/oned/BC_OnedCode128Writer.h"
24
25 #include <cctype>
26 #include <memory>
27
28 #include "core/fxcrt/fx_memory_wrappers.h"
29 #include "fxbarcode/BC_Writer.h"
30 #include "fxbarcode/oned/BC_OneDimWriter.h"
31
32 namespace {
33
34 constexpr size_t kPatternSize = 7;
35
36 const int8_t CODE_PATTERNS[107][kPatternSize] = {
37 {2, 1, 2, 2, 2, 2, 0}, {2, 2, 2, 1, 2, 2, 0}, {2, 2, 2, 2, 2, 1, 0},
38 {1, 2, 1, 2, 2, 3, 0}, {1, 2, 1, 3, 2, 2, 0}, {1, 3, 1, 2, 2, 2, 0},
39 {1, 2, 2, 2, 1, 3, 0}, {1, 2, 2, 3, 1, 2, 0}, {1, 3, 2, 2, 1, 2, 0},
40 {2, 2, 1, 2, 1, 3, 0}, {2, 2, 1, 3, 1, 2, 0}, {2, 3, 1, 2, 1, 2, 0},
41 {1, 1, 2, 2, 3, 2, 0}, {1, 2, 2, 1, 3, 2, 0}, {1, 2, 2, 2, 3, 1, 0},
42 {1, 1, 3, 2, 2, 2, 0}, {1, 2, 3, 1, 2, 2, 0}, {1, 2, 3, 2, 2, 1, 0},
43 {2, 2, 3, 2, 1, 1, 0}, {2, 2, 1, 1, 3, 2, 0}, {2, 2, 1, 2, 3, 1, 0},
44 {2, 1, 3, 2, 1, 2, 0}, {2, 2, 3, 1, 1, 2, 0}, {3, 1, 2, 1, 3, 1, 0},
45 {3, 1, 1, 2, 2, 2, 0}, {3, 2, 1, 1, 2, 2, 0}, {3, 2, 1, 2, 2, 1, 0},
46 {3, 1, 2, 2, 1, 2, 0}, {3, 2, 2, 1, 1, 2, 0}, {3, 2, 2, 2, 1, 1, 0},
47 {2, 1, 2, 1, 2, 3, 0}, {2, 1, 2, 3, 2, 1, 0}, {2, 3, 2, 1, 2, 1, 0},
48 {1, 1, 1, 3, 2, 3, 0}, {1, 3, 1, 1, 2, 3, 0}, {1, 3, 1, 3, 2, 1, 0},
49 {1, 1, 2, 3, 1, 3, 0}, {1, 3, 2, 1, 1, 3, 0}, {1, 3, 2, 3, 1, 1, 0},
50 {2, 1, 1, 3, 1, 3, 0}, {2, 3, 1, 1, 1, 3, 0}, {2, 3, 1, 3, 1, 1, 0},
51 {1, 1, 2, 1, 3, 3, 0}, {1, 1, 2, 3, 3, 1, 0}, {1, 3, 2, 1, 3, 1, 0},
52 {1, 1, 3, 1, 2, 3, 0}, {1, 1, 3, 3, 2, 1, 0}, {1, 3, 3, 1, 2, 1, 0},
53 {3, 1, 3, 1, 2, 1, 0}, {2, 1, 1, 3, 3, 1, 0}, {2, 3, 1, 1, 3, 1, 0},
54 {2, 1, 3, 1, 1, 3, 0}, {2, 1, 3, 3, 1, 1, 0}, {2, 1, 3, 1, 3, 1, 0},
55 {3, 1, 1, 1, 2, 3, 0}, {3, 1, 1, 3, 2, 1, 0}, {3, 3, 1, 1, 2, 1, 0},
56 {3, 1, 2, 1, 1, 3, 0}, {3, 1, 2, 3, 1, 1, 0}, {3, 3, 2, 1, 1, 1, 0},
57 {3, 1, 4, 1, 1, 1, 0}, {2, 2, 1, 4, 1, 1, 0}, {4, 3, 1, 1, 1, 1, 0},
58 {1, 1, 1, 2, 2, 4, 0}, {1, 1, 1, 4, 2, 2, 0}, {1, 2, 1, 1, 2, 4, 0},
59 {1, 2, 1, 4, 2, 1, 0}, {1, 4, 1, 1, 2, 2, 0}, {1, 4, 1, 2, 2, 1, 0},
60 {1, 1, 2, 2, 1, 4, 0}, {1, 1, 2, 4, 1, 2, 0}, {1, 2, 2, 1, 1, 4, 0},
61 {1, 2, 2, 4, 1, 1, 0}, {1, 4, 2, 1, 1, 2, 0}, {1, 4, 2, 2, 1, 1, 0},
62 {2, 4, 1, 2, 1, 1, 0}, {2, 2, 1, 1, 1, 4, 0}, {4, 1, 3, 1, 1, 1, 0},
63 {2, 4, 1, 1, 1, 2, 0}, {1, 3, 4, 1, 1, 1, 0}, {1, 1, 1, 2, 4, 2, 0},
64 {1, 2, 1, 1, 4, 2, 0}, {1, 2, 1, 2, 4, 1, 0}, {1, 1, 4, 2, 1, 2, 0},
65 {1, 2, 4, 1, 1, 2, 0}, {1, 2, 4, 2, 1, 1, 0}, {4, 1, 1, 2, 1, 2, 0},
66 {4, 2, 1, 1, 1, 2, 0}, {4, 2, 1, 2, 1, 1, 0}, {2, 1, 2, 1, 4, 1, 0},
67 {2, 1, 4, 1, 2, 1, 0}, {4, 1, 2, 1, 2, 1, 0}, {1, 1, 1, 1, 4, 3, 0},
68 {1, 1, 1, 3, 4, 1, 0}, {1, 3, 1, 1, 4, 1, 0}, {1, 1, 4, 1, 1, 3, 0},
69 {1, 1, 4, 3, 1, 1, 0}, {4, 1, 1, 1, 1, 3, 0}, {4, 1, 1, 3, 1, 1, 0},
70 {1, 1, 3, 1, 4, 1, 0}, {1, 1, 4, 1, 3, 1, 0}, {3, 1, 1, 1, 4, 1, 0},
71 {4, 1, 1, 1, 3, 1, 0}, {2, 1, 1, 4, 1, 2, 0}, {2, 1, 1, 2, 1, 4, 0},
72 {2, 1, 1, 2, 3, 2, 0}, {2, 3, 3, 1, 1, 1, 2}};
73
74 const int32_t CODE_START_B = 104;
75 const int32_t CODE_START_C = 105;
76 const int32_t CODE_STOP = 106;
77
IsInOnedCode128Alphabet(wchar_t ch)78 bool IsInOnedCode128Alphabet(wchar_t ch) {
79 int32_t index = static_cast<int32_t>(ch);
80 return index >= 32 && index <= 126 && index != 34;
81 }
82
83 } // namespace
84
CBC_OnedCode128Writer(BC_TYPE type)85 CBC_OnedCode128Writer::CBC_OnedCode128Writer(BC_TYPE type)
86 : m_codeFormat(type) {
87 ASSERT(m_codeFormat == BC_CODE128_B || m_codeFormat == BC_CODE128_C);
88 }
89
90 CBC_OnedCode128Writer::~CBC_OnedCode128Writer() = default;
91
CheckContentValidity(WideStringView contents)92 bool CBC_OnedCode128Writer::CheckContentValidity(WideStringView contents) {
93 return HasValidContentSize(contents) &&
94 std::all_of(contents.begin(), contents.end(), IsInOnedCode128Alphabet);
95 }
96
FilterContents(WideStringView contents)97 WideString CBC_OnedCode128Writer::FilterContents(WideStringView contents) {
98 const wchar_t limit = m_codeFormat == BC_CODE128_B ? 126 : 106;
99
100 WideString filtered;
101 filtered.Reserve(contents.GetLength());
102 for (size_t i = 0; i < contents.GetLength(); i++) {
103 wchar_t ch = contents[i];
104 if (ch > 175) {
105 i++;
106 continue;
107 }
108 if (ch >= 32 && ch <= limit)
109 filtered += ch;
110 }
111 return filtered;
112 }
113
SetTextLocation(BC_TEXT_LOC location)114 bool CBC_OnedCode128Writer::SetTextLocation(BC_TEXT_LOC location) {
115 if (location < BC_TEXT_LOC_NONE || location > BC_TEXT_LOC_BELOWEMBED) {
116 return false;
117 }
118 m_locTextLoc = location;
119 return true;
120 }
121
EncodeWithHint(const ByteString & contents,BCFORMAT format,int32_t & outWidth,int32_t & outHeight,int32_t hints)122 uint8_t* CBC_OnedCode128Writer::EncodeWithHint(const ByteString& contents,
123 BCFORMAT format,
124 int32_t& outWidth,
125 int32_t& outHeight,
126 int32_t hints) {
127 if (format != BCFORMAT_CODE_128)
128 return nullptr;
129 return CBC_OneDimWriter::EncodeWithHint(contents, format, outWidth, outHeight,
130 hints);
131 }
132
EncodeImpl(const ByteString & contents,int32_t & outLength)133 uint8_t* CBC_OnedCode128Writer::EncodeImpl(const ByteString& contents,
134 int32_t& outLength) {
135 if (contents.GetLength() < 1 || contents.GetLength() > 80)
136 return nullptr;
137
138 std::vector<int32_t> patterns;
139 int32_t checkSum = 0;
140 if (m_codeFormat == BC_CODE128_B)
141 checkSum = Encode128B(contents, &patterns);
142 else
143 checkSum = Encode128C(contents, &patterns);
144
145 checkSum %= 103;
146 patterns.push_back(checkSum);
147 patterns.push_back(CODE_STOP);
148 m_iContentLen = contents.GetLength() + 3;
149 int32_t codeWidth = 0;
150 for (const auto& patternIndex : patterns) {
151 const int8_t* pattern = CODE_PATTERNS[patternIndex];
152 for (size_t i = 0; i < kPatternSize; ++i)
153 codeWidth += pattern[i];
154 }
155 outLength = codeWidth;
156 std::unique_ptr<uint8_t, FxFreeDeleter> result(FX_Alloc(uint8_t, outLength));
157 int32_t pos = 0;
158 for (size_t i = 0; i < patterns.size(); ++i) {
159 const int8_t* pattern = CODE_PATTERNS[patterns[i]];
160 pos += AppendPattern(result.get(), pos, pattern, kPatternSize, true);
161 }
162 return result.release();
163 }
164
165 // static
Encode128B(const ByteString & contents,std::vector<int32_t> * patterns)166 int32_t CBC_OnedCode128Writer::Encode128B(const ByteString& contents,
167 std::vector<int32_t>* patterns) {
168 int32_t checkWeight = 1;
169 patterns->push_back(CODE_START_B);
170 int32_t checkSum = CODE_START_B * checkWeight;
171 for (size_t position = 0; position < contents.GetLength(); position++) {
172 int32_t patternIndex = contents[position] - ' ';
173 patterns->push_back(patternIndex);
174 checkSum += patternIndex * checkWeight++;
175 }
176 return checkSum;
177 }
178
179 // static
Encode128C(const ByteString & contents,std::vector<int32_t> * patterns)180 int32_t CBC_OnedCode128Writer::Encode128C(const ByteString& contents,
181 std::vector<int32_t>* patterns) {
182 int32_t checkWeight = 1;
183 patterns->push_back(CODE_START_C);
184 int32_t checkSum = CODE_START_C * checkWeight;
185 size_t position = 0;
186 while (position < contents.GetLength()) {
187 int32_t patternIndex;
188 char ch = contents[position];
189 if (std::isdigit(ch)) {
190 patternIndex = FXSYS_atoi(
191 contents.Substr(position, contents.IsValidIndex(position + 1) ? 2 : 1)
192 .c_str());
193 ++position;
194 if (position < contents.GetLength() && std::isdigit(contents[position]))
195 ++position;
196 } else {
197 patternIndex = static_cast<int32_t>(ch);
198 ++position;
199 }
200 patterns->push_back(patternIndex);
201 checkSum += patternIndex * checkWeight++;
202 }
203 return checkSum;
204 }
205