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_CommonBitArray.h"
27 #include "fxbarcode/common/BC_CommonBitMatrix.h"
28 #include "fxbarcode/oned/BC_OneDimWriter.h"
29 #include "third_party/base/stl_util.h"
30
31 namespace {
32
33 const char kOnedCodaAlphabet[] = {'0', '1', '2', '3', '4', '5', '6', '7',
34 '8', '9', '-', '$', ':', '/', '.', '+',
35 'A', 'B', 'C', 'D', 'T', 'N'};
36
37 const int8_t kOnedCodaCharacterEncoding[] = {
38 0x03, 0x06, 0x09, 0x60, 0x12, 0x42, 0x21, 0x24, 0x30, 0x48, 0x0c,
39 0x18, 0x45, 0x51, 0x54, 0x15, 0x1A, 0x29, 0x0B, 0x0E, 0x1A, 0x29};
40 static_assert(FX_ArraySize(kOnedCodaCharacterEncoding) == 22, "Wrong size");
41 static_assert(FX_ArraySize(kOnedCodaCharacterEncoding) ==
42 FX_ArraySize(kOnedCodaAlphabet),
43 "Wrong size");
44
45 const char kStartEndChars[] = {'A', 'B', 'C', 'D', 'T', 'N', '*', 'E',
46 'a', 'b', 'c', 'd', 't', 'n', 'e'};
47 const char kCOntentChars[] = {'0', '1', '2', '3', '4', '5', '6', '7',
48 '8', '9', '-', '$', '/', ':', '+', '.'};
49
50 } // namespace
51
CBC_OnedCodaBarWriter()52 CBC_OnedCodaBarWriter::CBC_OnedCodaBarWriter()
53 : m_chStart('A'), m_chEnd('B'), m_iWideNarrRatio(2) {}
54
~CBC_OnedCodaBarWriter()55 CBC_OnedCodaBarWriter::~CBC_OnedCodaBarWriter() {}
56
SetStartChar(char start)57 bool CBC_OnedCodaBarWriter::SetStartChar(char start) {
58 if (!pdfium::ContainsValue(kStartEndChars, start))
59 return false;
60
61 m_chStart = start;
62 return true;
63 }
64
SetEndChar(char end)65 bool CBC_OnedCodaBarWriter::SetEndChar(char end) {
66 if (!pdfium::ContainsValue(kStartEndChars, end))
67 return false;
68
69 m_chEnd = end;
70 return true;
71 }
72
SetDataLength(int32_t length)73 void CBC_OnedCodaBarWriter::SetDataLength(int32_t length) {
74 m_iDataLenth = length + 2;
75 }
76
SetTextLocation(BC_TEXT_LOC location)77 bool CBC_OnedCodaBarWriter::SetTextLocation(BC_TEXT_LOC location) {
78 if (location < BC_TEXT_LOC_NONE || location > BC_TEXT_LOC_BELOWEMBED) {
79 return false;
80 }
81 m_locTextLoc = location;
82 return true;
83 }
84
SetWideNarrowRatio(int8_t ratio)85 bool CBC_OnedCodaBarWriter::SetWideNarrowRatio(int8_t ratio) {
86 if (ratio < 2 || ratio > 3)
87 return false;
88
89 m_iWideNarrRatio = ratio;
90 return true;
91 }
92
FindChar(wchar_t ch,bool isContent)93 bool CBC_OnedCodaBarWriter::FindChar(wchar_t ch, bool isContent) {
94 if (ch > 0x7F)
95 return false;
96
97 char narrow_ch = static_cast<char>(ch);
98 return pdfium::ContainsValue(kCOntentChars, narrow_ch) ||
99 (isContent && pdfium::ContainsValue(kStartEndChars, narrow_ch));
100 }
101
CheckContentValidity(const WideStringView & contents)102 bool CBC_OnedCodaBarWriter::CheckContentValidity(
103 const WideStringView& contents) {
104 return std::all_of(
105 contents.begin(), contents.end(),
106 [this](const wchar_t& ch) { return this->FindChar(ch, false); });
107 }
108
FilterContents(const WideStringView & contents)109 WideString CBC_OnedCodaBarWriter::FilterContents(
110 const WideStringView& contents) {
111 WideString filtercontents;
112 wchar_t ch;
113 for (size_t index = 0; index < contents.GetLength(); index++) {
114 ch = contents[index];
115 if (ch > 175) {
116 index++;
117 continue;
118 }
119 if (!FindChar(ch, true))
120 continue;
121 filtercontents += ch;
122 }
123 return filtercontents;
124 }
125
EncodeWithHint(const ByteString & contents,BCFORMAT format,int32_t & outWidth,int32_t & outHeight,int32_t hints)126 uint8_t* CBC_OnedCodaBarWriter::EncodeWithHint(const ByteString& contents,
127 BCFORMAT format,
128 int32_t& outWidth,
129 int32_t& outHeight,
130 int32_t hints) {
131 if (format != BCFORMAT_CODABAR)
132 return nullptr;
133 return CBC_OneDimWriter::EncodeWithHint(contents, format, outWidth, outHeight,
134 hints);
135 }
136
EncodeImpl(const ByteString & contents,int32_t & outLength)137 uint8_t* CBC_OnedCodaBarWriter::EncodeImpl(const ByteString& contents,
138 int32_t& outLength) {
139 ByteString data = m_chStart + contents + m_chEnd;
140 m_iContentLen = data.GetLength();
141 uint8_t* result = FX_Alloc2D(uint8_t, m_iWideNarrRatio * 7, data.GetLength());
142 char ch;
143 int32_t position = 0;
144 for (size_t index = 0; index < data.GetLength(); index++) {
145 ch = data[index];
146 if (((ch >= 'a') && (ch <= 'z'))) {
147 ch = ch - 32;
148 }
149 switch (ch) {
150 case 'T':
151 ch = 'A';
152 break;
153 case 'N':
154 ch = 'B';
155 break;
156 case '*':
157 ch = 'C';
158 break;
159 case 'E':
160 ch = 'D';
161 break;
162 default:
163 break;
164 }
165 int8_t code = 0;
166 for (size_t i = 0; i < FX_ArraySize(kOnedCodaAlphabet); i++) {
167 if (ch == kOnedCodaAlphabet[i]) {
168 code = kOnedCodaCharacterEncoding[i];
169 break;
170 }
171 }
172 uint8_t color = 1;
173 int32_t counter = 0;
174 int32_t bit = 0;
175 while (bit < 7) {
176 result[position] = color;
177 position++;
178 if (((code >> (6 - bit)) & 1) == 0 || counter == m_iWideNarrRatio - 1) {
179 color = !color;
180 bit++;
181 counter = 0;
182 } else {
183 counter++;
184 }
185 }
186 if (index < data.GetLength() - 1) {
187 result[position] = 0;
188 position++;
189 }
190 }
191 outLength = position;
192 return result;
193 }
194
encodedContents(const WideStringView & contents)195 WideString CBC_OnedCodaBarWriter::encodedContents(
196 const WideStringView& contents) {
197 WideString strStart(static_cast<wchar_t>(m_chStart));
198 WideString strEnd(static_cast<wchar_t>(m_chEnd));
199 return strStart + contents + strEnd;
200 }
201
RenderResult(const WideStringView & contents,uint8_t * code,int32_t codeLength)202 bool CBC_OnedCodaBarWriter::RenderResult(const WideStringView& contents,
203 uint8_t* code,
204 int32_t codeLength) {
205 return CBC_OneDimWriter::RenderResult(
206 encodedContents(contents).AsStringView(), code, codeLength);
207 }
208