1 // Copyright 2014 The PDFium Authors
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 2011 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_OnedCodaBarWriter.h"
24
25 #include <array>
26 #include <iterator>
27
28 #include "core/fxcrt/containers/contains.h"
29 #include "core/fxcrt/fx_2d_size.h"
30 #include "core/fxcrt/fx_extension.h"
31 #include "core/fxcrt/stl_util.h"
32 #include "fxbarcode/BC_Writer.h"
33 #include "fxbarcode/oned/BC_OneDimWriter.h"
34
35 namespace {
36
37 constexpr auto kOnedCodaAlphabet = fxcrt::ToArray<const char>(
38 {'0', '1', '2', '3', '4', '5', '6', '7', '8', '9', '-',
39 '$', ':', '/', '.', '+', 'A', 'B', 'C', 'D', 'T', 'N'});
40 static_assert(std::size(kOnedCodaAlphabet) == 22, "Wrong size");
41
42 constexpr auto kOnedCodaCharacterEncoding = fxcrt::ToArray<const int8_t>(
43 {0x03, 0x06, 0x09, 0x60, 0x12, 0x42, 0x21, 0x24, 0x30, 0x48, 0x0c,
44 0x18, 0x45, 0x51, 0x54, 0x15, 0x1A, 0x29, 0x0B, 0x0E, 0x1A, 0x29});
45 static_assert(std::size(kOnedCodaCharacterEncoding) == 22, "Wrong size");
46
47 const char kStartEndChars[] = {'A', 'B', 'C', 'D', 'T', 'N', '*', 'E',
48 'a', 'b', 'c', 'd', 't', 'n', 'e'};
49 const char kContentChars[] = {'0', '1', '2', '3', '4', '5', '6', '7',
50 '8', '9', '-', '$', '/', ':', '+', '.'};
51
IsValidChar(wchar_t ch,bool isContent)52 bool IsValidChar(wchar_t ch, bool isContent) {
53 if (ch > 0x7F)
54 return false;
55
56 char narrow_ch = static_cast<char>(ch);
57 return pdfium::Contains(kContentChars, narrow_ch) ||
58 (isContent && pdfium::Contains(kStartEndChars, narrow_ch));
59 }
60
61 } // namespace
62
63 CBC_OnedCodaBarWriter::CBC_OnedCodaBarWriter() = default;
64
65 CBC_OnedCodaBarWriter::~CBC_OnedCodaBarWriter() = default;
66
SetStartChar(char start)67 bool CBC_OnedCodaBarWriter::SetStartChar(char start) {
68 if (!pdfium::Contains(kStartEndChars, start))
69 return false;
70
71 m_chStart = start;
72 return true;
73 }
74
SetEndChar(char end)75 bool CBC_OnedCodaBarWriter::SetEndChar(char end) {
76 if (!pdfium::Contains(kStartEndChars, end))
77 return false;
78
79 m_chEnd = end;
80 return true;
81 }
82
SetDataLength(int32_t length)83 void CBC_OnedCodaBarWriter::SetDataLength(int32_t length) {
84 m_iDataLenth = length + 2;
85 }
86
SetTextLocation(BC_TEXT_LOC location)87 void CBC_OnedCodaBarWriter::SetTextLocation(BC_TEXT_LOC location) {
88 m_locTextLoc = location;
89 }
90
SetWideNarrowRatio(int8_t ratio)91 bool CBC_OnedCodaBarWriter::SetWideNarrowRatio(int8_t ratio) {
92 if (ratio < 2 || ratio > 3)
93 return false;
94
95 m_iWideNarrRatio = ratio;
96 return true;
97 }
98
CheckContentValidity(WideStringView contents)99 bool CBC_OnedCodaBarWriter::CheckContentValidity(WideStringView contents) {
100 return HasValidContentSize(contents) &&
101 std::all_of(contents.begin(), contents.end(),
102 [](const wchar_t& ch) { return IsValidChar(ch, false); });
103 }
104
FilterContents(WideStringView contents)105 WideString CBC_OnedCodaBarWriter::FilterContents(WideStringView contents) {
106 WideString filtercontents;
107 filtercontents.Reserve(contents.GetLength());
108 wchar_t ch;
109 for (size_t index = 0; index < contents.GetLength(); index++) {
110 ch = contents[index];
111 if (ch > 175) {
112 index++;
113 continue;
114 }
115 if (!IsValidChar(ch, true))
116 continue;
117 filtercontents += ch;
118 }
119 return filtercontents;
120 }
121
Encode(const ByteString & contents)122 DataVector<uint8_t> CBC_OnedCodaBarWriter::Encode(const ByteString& contents) {
123 ByteString data = m_chStart + contents + m_chEnd;
124 m_iContentLen = data.GetLength();
125 DataVector<uint8_t> result(
126 Fx2DSizeOrDie(m_iWideNarrRatio * 7, data.GetLength()));
127 char ch;
128 int32_t position = 0;
129 for (size_t index = 0; index < data.GetLength(); index++) {
130 ch = FXSYS_ToUpperASCII(data[index]);
131 switch (ch) {
132 case 'T':
133 ch = 'A';
134 break;
135 case 'N':
136 ch = 'B';
137 break;
138 case '*':
139 ch = 'C';
140 break;
141 case 'E':
142 ch = 'D';
143 break;
144 default:
145 break;
146 }
147 int8_t code = 0;
148 for (size_t i = 0; i < std::size(kOnedCodaAlphabet); i++) {
149 if (ch == kOnedCodaAlphabet[i]) {
150 code = kOnedCodaCharacterEncoding[i];
151 break;
152 }
153 }
154 uint8_t color = 1;
155 int32_t counter = 0;
156 int32_t bit = 0;
157 while (bit < 7) {
158 result[position] = color;
159 position++;
160 if (((code >> (6 - bit)) & 1) == 0 || counter == m_iWideNarrRatio - 1) {
161 color = !color;
162 bit++;
163 counter = 0;
164 } else {
165 counter++;
166 }
167 }
168 if (index < data.GetLength() - 1) {
169 result[position] = 0;
170 position++;
171 }
172 }
173 result.resize(position);
174 return result;
175 }
176
encodedContents(WideStringView contents)177 WideString CBC_OnedCodaBarWriter::encodedContents(WideStringView contents) {
178 WideString strStart(static_cast<wchar_t>(m_chStart));
179 WideString strEnd(static_cast<wchar_t>(m_chEnd));
180 return strStart + contents + strEnd;
181 }
182
RenderResult(WideStringView contents,pdfium::span<const uint8_t> code)183 bool CBC_OnedCodaBarWriter::RenderResult(WideStringView contents,
184 pdfium::span<const uint8_t> code) {
185 return CBC_OneDimWriter::RenderResult(
186 encodedContents(contents).AsStringView(), code);
187 }
188