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 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 "fxbarcode/BC_Writer.h"
26 #include "fxbarcode/common/BC_CommonBitMatrix.h"
27 #include "fxbarcode/oned/BC_OneDimWriter.h"
28 #include "third_party/base/stl_util.h"
29
30 namespace {
31
32 const char kOnedCodaAlphabet[] = {'0', '1', '2', '3', '4', '5', '6', '7',
33 '8', '9', '-', '$', ':', '/', '.', '+',
34 'A', 'B', 'C', 'D', 'T', 'N'};
35
36 const int8_t kOnedCodaCharacterEncoding[] = {
37 0x03, 0x06, 0x09, 0x60, 0x12, 0x42, 0x21, 0x24, 0x30, 0x48, 0x0c,
38 0x18, 0x45, 0x51, 0x54, 0x15, 0x1A, 0x29, 0x0B, 0x0E, 0x1A, 0x29};
39 static_assert(FX_ArraySize(kOnedCodaCharacterEncoding) == 22, "Wrong size");
40 static_assert(FX_ArraySize(kOnedCodaCharacterEncoding) ==
41 FX_ArraySize(kOnedCodaAlphabet),
42 "Wrong size");
43
44 const char kStartEndChars[] = {'A', 'B', 'C', 'D', 'T', 'N', '*', 'E',
45 'a', 'b', 'c', 'd', 't', 'n', 'e'};
46 const char kCOntentChars[] = {'0', '1', '2', '3', '4', '5', '6', '7',
47 '8', '9', '-', '$', '/', ':', '+', '.'};
48
49 } // namespace
50
51 CBC_OnedCodaBarWriter::CBC_OnedCodaBarWriter() = default;
52
53 CBC_OnedCodaBarWriter::~CBC_OnedCodaBarWriter() = default;
54
SetStartChar(char start)55 bool CBC_OnedCodaBarWriter::SetStartChar(char start) {
56 if (!pdfium::ContainsValue(kStartEndChars, start))
57 return false;
58
59 m_chStart = start;
60 return true;
61 }
62
SetEndChar(char end)63 bool CBC_OnedCodaBarWriter::SetEndChar(char end) {
64 if (!pdfium::ContainsValue(kStartEndChars, end))
65 return false;
66
67 m_chEnd = end;
68 return true;
69 }
70
SetDataLength(int32_t length)71 void CBC_OnedCodaBarWriter::SetDataLength(int32_t length) {
72 m_iDataLenth = length + 2;
73 }
74
SetTextLocation(BC_TEXT_LOC location)75 bool CBC_OnedCodaBarWriter::SetTextLocation(BC_TEXT_LOC location) {
76 if (location < BC_TEXT_LOC_NONE || location > BC_TEXT_LOC_BELOWEMBED) {
77 return false;
78 }
79 m_locTextLoc = location;
80 return true;
81 }
82
SetWideNarrowRatio(int8_t ratio)83 bool CBC_OnedCodaBarWriter::SetWideNarrowRatio(int8_t ratio) {
84 if (ratio < 2 || ratio > 3)
85 return false;
86
87 m_iWideNarrRatio = ratio;
88 return true;
89 }
90
FindChar(wchar_t ch,bool isContent)91 bool CBC_OnedCodaBarWriter::FindChar(wchar_t ch, bool isContent) {
92 if (ch > 0x7F)
93 return false;
94
95 char narrow_ch = static_cast<char>(ch);
96 return pdfium::ContainsValue(kCOntentChars, narrow_ch) ||
97 (isContent && pdfium::ContainsValue(kStartEndChars, narrow_ch));
98 }
99
CheckContentValidity(WideStringView contents)100 bool CBC_OnedCodaBarWriter::CheckContentValidity(WideStringView contents) {
101 return std::all_of(
102 contents.begin(), contents.end(),
103 [this](const wchar_t& ch) { return this->FindChar(ch, false); });
104 }
105
FilterContents(WideStringView contents)106 WideString CBC_OnedCodaBarWriter::FilterContents(WideStringView contents) {
107 WideString filtercontents;
108 filtercontents.Reserve(contents.GetLength());
109 wchar_t ch;
110 for (size_t index = 0; index < contents.GetLength(); index++) {
111 ch = contents[index];
112 if (ch > 175) {
113 index++;
114 continue;
115 }
116 if (!FindChar(ch, true))
117 continue;
118 filtercontents += ch;
119 }
120 return filtercontents;
121 }
122
EncodeWithHint(const ByteString & contents,BCFORMAT format,int32_t & outWidth,int32_t & outHeight,int32_t hints)123 uint8_t* CBC_OnedCodaBarWriter::EncodeWithHint(const ByteString& contents,
124 BCFORMAT format,
125 int32_t& outWidth,
126 int32_t& outHeight,
127 int32_t hints) {
128 if (format != BCFORMAT_CODABAR)
129 return nullptr;
130 return CBC_OneDimWriter::EncodeWithHint(contents, format, outWidth, outHeight,
131 hints);
132 }
133
EncodeImpl(const ByteString & contents,int32_t & outLength)134 uint8_t* CBC_OnedCodaBarWriter::EncodeImpl(const ByteString& contents,
135 int32_t& outLength) {
136 ByteString data = m_chStart + contents + m_chEnd;
137 m_iContentLen = data.GetLength();
138 uint8_t* result = FX_Alloc2D(uint8_t, m_iWideNarrRatio * 7, data.GetLength());
139 char ch;
140 int32_t position = 0;
141 for (size_t index = 0; index < data.GetLength(); index++) {
142 ch = data[index];
143 if (((ch >= 'a') && (ch <= 'z'))) {
144 ch = ch - 32;
145 }
146 switch (ch) {
147 case 'T':
148 ch = 'A';
149 break;
150 case 'N':
151 ch = 'B';
152 break;
153 case '*':
154 ch = 'C';
155 break;
156 case 'E':
157 ch = 'D';
158 break;
159 default:
160 break;
161 }
162 int8_t code = 0;
163 for (size_t i = 0; i < FX_ArraySize(kOnedCodaAlphabet); i++) {
164 if (ch == kOnedCodaAlphabet[i]) {
165 code = kOnedCodaCharacterEncoding[i];
166 break;
167 }
168 }
169 uint8_t color = 1;
170 int32_t counter = 0;
171 int32_t bit = 0;
172 while (bit < 7) {
173 result[position] = color;
174 position++;
175 if (((code >> (6 - bit)) & 1) == 0 || counter == m_iWideNarrRatio - 1) {
176 color = !color;
177 bit++;
178 counter = 0;
179 } else {
180 counter++;
181 }
182 }
183 if (index < data.GetLength() - 1) {
184 result[position] = 0;
185 position++;
186 }
187 }
188 outLength = position;
189 return result;
190 }
191
encodedContents(WideStringView contents)192 WideString CBC_OnedCodaBarWriter::encodedContents(WideStringView contents) {
193 WideString strStart(static_cast<wchar_t>(m_chStart));
194 WideString strEnd(static_cast<wchar_t>(m_chEnd));
195 return strStart + contents + strEnd;
196 }
197
RenderResult(WideStringView contents,uint8_t * code,int32_t codeLength)198 bool CBC_OnedCodaBarWriter::RenderResult(WideStringView contents,
199 uint8_t* code,
200 int32_t codeLength) {
201 return CBC_OneDimWriter::RenderResult(
202 encodedContents(contents).AsStringView(), code, codeLength);
203 }
204