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 "xfa/fxbarcode/BC_Writer.h"
24 #include "xfa/fxbarcode/common/BC_CommonBitMatrix.h"
25 #include "xfa/fxbarcode/oned/BC_OneDimWriter.h"
26 #include "xfa/fxbarcode/oned/BC_OnedCode39Writer.h"
27
28 namespace {
29
30 const FX_CHAR ALPHABET_STRING[] =
31 "0123456789ABCDEFGHIJKLMNOPQRSTUVWXYZ-. *$/+%";
32
33 const FX_CHAR CHECKSUM_STRING[] = "0123456789ABCDEFGHIJKLMNOPQRSTUVWXYZ-. $/+%";
34
35 const int32_t CHARACTER_ENCODINGS[44] = {
36 0x034, 0x121, 0x061, 0x160, 0x031, 0x130, 0x070, 0x025, 0x124,
37 0x064, 0x109, 0x049, 0x148, 0x019, 0x118, 0x058, 0x00D, 0x10C,
38 0x04C, 0x01C, 0x103, 0x043, 0x142, 0x013, 0x112, 0x052, 0x007,
39 0x106, 0x046, 0x016, 0x181, 0x0C1, 0x1C0, 0x091, 0x190, 0x0D0,
40 0x085, 0x184, 0x0C4, 0x094, 0x0A8, 0x0A2, 0x08A, 0x02A};
41
42 } // namespace
43
CBC_OnedCode39Writer()44 CBC_OnedCode39Writer::CBC_OnedCode39Writer() {
45 m_iWideNarrRatio = 3;
46 }
~CBC_OnedCode39Writer()47 CBC_OnedCode39Writer::~CBC_OnedCode39Writer() {}
CheckContentValidity(const CFX_WideStringC & contents)48 bool CBC_OnedCode39Writer::CheckContentValidity(
49 const CFX_WideStringC& contents) {
50 for (int32_t i = 0; i < contents.GetLength(); i++) {
51 FX_WCHAR ch = contents.GetAt(i);
52 if ((ch >= (FX_WCHAR)'0' && ch <= (FX_WCHAR)'9') ||
53 (ch >= (FX_WCHAR)'A' && ch <= (FX_WCHAR)'Z') || ch == (FX_WCHAR)'-' ||
54 ch == (FX_WCHAR)'.' || ch == (FX_WCHAR)' ' || ch == (FX_WCHAR)'*' ||
55 ch == (FX_WCHAR)'$' || ch == (FX_WCHAR)'/' || ch == (FX_WCHAR)'+' ||
56 ch == (FX_WCHAR)'%') {
57 continue;
58 }
59 return false;
60 }
61 return true;
62 }
63
FilterContents(const CFX_WideStringC & contents)64 CFX_WideString CBC_OnedCode39Writer::FilterContents(
65 const CFX_WideStringC& contents) {
66 CFX_WideString filtercontents;
67 for (int32_t i = 0; i < contents.GetLength(); i++) {
68 FX_WCHAR ch = contents.GetAt(i);
69 if (ch == (FX_WCHAR)'*' && (i == 0 || i == contents.GetLength() - 1)) {
70 continue;
71 }
72 if (ch > 175) {
73 i++;
74 continue;
75 } else {
76 ch = Upper(ch);
77 }
78 if ((ch >= (FX_WCHAR)'0' && ch <= (FX_WCHAR)'9') ||
79 (ch >= (FX_WCHAR)'A' && ch <= (FX_WCHAR)'Z') || ch == (FX_WCHAR)'-' ||
80 ch == (FX_WCHAR)'.' || ch == (FX_WCHAR)' ' || ch == (FX_WCHAR)'*' ||
81 ch == (FX_WCHAR)'$' || ch == (FX_WCHAR)'/' || ch == (FX_WCHAR)'+' ||
82 ch == (FX_WCHAR)'%') {
83 filtercontents += ch;
84 }
85 }
86 return filtercontents;
87 }
88
RenderTextContents(const CFX_WideStringC & contents)89 CFX_WideString CBC_OnedCode39Writer::RenderTextContents(
90 const CFX_WideStringC& contents) {
91 CFX_WideString renderContents;
92 for (int32_t i = 0; i < contents.GetLength(); i++) {
93 FX_WCHAR ch = contents.GetAt(i);
94 if (ch == (FX_WCHAR)'*' && (i == 0 || i == contents.GetLength() - 1)) {
95 continue;
96 }
97 if (ch > 175) {
98 i++;
99 continue;
100 }
101 if ((ch >= (FX_WCHAR)'0' && ch <= (FX_WCHAR)'9') ||
102 (ch >= (FX_WCHAR)'A' && ch <= (FX_WCHAR)'Z') ||
103 (ch >= (FX_WCHAR)'a' && ch <= (FX_WCHAR)'z') || ch == (FX_WCHAR)'-' ||
104 ch == (FX_WCHAR)'.' || ch == (FX_WCHAR)' ' || ch == (FX_WCHAR)'*' ||
105 ch == (FX_WCHAR)'$' || ch == (FX_WCHAR)'/' || ch == (FX_WCHAR)'+' ||
106 ch == (FX_WCHAR)'%') {
107 renderContents += ch;
108 }
109 }
110 return renderContents;
111 }
112
SetTextLocation(BC_TEXT_LOC location)113 bool CBC_OnedCode39Writer::SetTextLocation(BC_TEXT_LOC location) {
114 if (location < BC_TEXT_LOC_NONE || location > BC_TEXT_LOC_BELOWEMBED) {
115 return false;
116 }
117 m_locTextLoc = location;
118 return true;
119 }
SetWideNarrowRatio(int32_t ratio)120 bool CBC_OnedCode39Writer::SetWideNarrowRatio(int32_t ratio) {
121 if (ratio < 2 || ratio > 3) {
122 return false;
123 }
124 m_iWideNarrRatio = ratio;
125 return true;
126 }
Encode(const CFX_ByteString & contents,BCFORMAT format,int32_t & outWidth,int32_t & outHeight,int32_t & e)127 uint8_t* CBC_OnedCode39Writer::Encode(const CFX_ByteString& contents,
128 BCFORMAT format,
129 int32_t& outWidth,
130 int32_t& outHeight,
131 int32_t& e) {
132 uint8_t* ret = Encode(contents, format, outWidth, outHeight, 0, e);
133 if (e != BCExceptionNO)
134 return nullptr;
135 return ret;
136 }
Encode(const CFX_ByteString & contents,BCFORMAT format,int32_t & outWidth,int32_t & outHeight,int32_t hints,int32_t & e)137 uint8_t* CBC_OnedCode39Writer::Encode(const CFX_ByteString& contents,
138 BCFORMAT format,
139 int32_t& outWidth,
140 int32_t& outHeight,
141 int32_t hints,
142 int32_t& e) {
143 if (format != BCFORMAT_CODE_39) {
144 e = BCExceptionOnlyEncodeCODE_39;
145 return nullptr;
146 }
147 uint8_t* ret =
148 CBC_OneDimWriter::Encode(contents, format, outWidth, outHeight, hints, e);
149 if (e != BCExceptionNO)
150 return nullptr;
151 return ret;
152 }
ToIntArray(int32_t a,int32_t * toReturn)153 void CBC_OnedCode39Writer::ToIntArray(int32_t a, int32_t* toReturn) {
154 for (int32_t i = 0; i < 9; i++) {
155 toReturn[i] = (a & (1 << i)) == 0 ? 1 : m_iWideNarrRatio;
156 }
157 }
CalcCheckSum(const CFX_ByteString & contents,int32_t & e)158 FX_CHAR CBC_OnedCode39Writer::CalcCheckSum(const CFX_ByteString& contents,
159 int32_t& e) {
160 int32_t length = contents.GetLength();
161 if (length > 80) {
162 e = BCExceptionContentsLengthShouldBetween1and80;
163 return '*';
164 }
165 int32_t checksum = 0;
166 int32_t len = (int32_t)strlen(ALPHABET_STRING);
167 for (int32_t i = 0; i < contents.GetLength(); i++) {
168 int32_t j = 0;
169 for (; j < len; j++) {
170 if (ALPHABET_STRING[j] == contents[i]) {
171 if (contents[i] != '*') {
172 checksum += j;
173 break;
174 } else {
175 break;
176 }
177 }
178 }
179 if (j >= len) {
180 e = BCExceptionUnSupportedString;
181 return '*';
182 }
183 }
184 checksum = checksum % 43;
185 return CHECKSUM_STRING[checksum];
186 }
Encode(const CFX_ByteString & contents,int32_t & outlength,int32_t & e)187 uint8_t* CBC_OnedCode39Writer::Encode(const CFX_ByteString& contents,
188 int32_t& outlength,
189 int32_t& e) {
190 FX_CHAR checksum = CalcCheckSum(contents, e);
191 if (checksum == '*') {
192 return nullptr;
193 }
194 int32_t widths[9] = {0};
195 int32_t wideStrideNum = 3;
196 int32_t narrStrideNum = 9 - wideStrideNum;
197 CFX_ByteString encodedContents = contents;
198 if (m_bCalcChecksum) {
199 encodedContents += checksum;
200 }
201 m_iContentLen = encodedContents.GetLength();
202 int32_t codeWidth = (wideStrideNum * m_iWideNarrRatio + narrStrideNum) * 2 +
203 1 + m_iContentLen;
204 int32_t len = (int32_t)strlen(ALPHABET_STRING);
205 for (int32_t j = 0; j < m_iContentLen; j++) {
206 for (int32_t i = 0; i < len; i++) {
207 if (ALPHABET_STRING[i] == encodedContents[j]) {
208 ToIntArray(CHARACTER_ENCODINGS[i], widths);
209 for (int32_t k = 0; k < 9; k++) {
210 codeWidth += widths[k];
211 }
212 }
213 }
214 }
215 outlength = codeWidth;
216 uint8_t* result = FX_Alloc(uint8_t, codeWidth);
217 ToIntArray(CHARACTER_ENCODINGS[39], widths);
218 int32_t pos = AppendPattern(result, 0, widths, 9, 1, e);
219 if (e != BCExceptionNO) {
220 FX_Free(result);
221 return nullptr;
222 }
223 int32_t narrowWhite[] = {1};
224 pos += AppendPattern(result, pos, narrowWhite, 1, 0, e);
225 if (e != BCExceptionNO) {
226 FX_Free(result);
227 return nullptr;
228 }
229 for (int32_t l = m_iContentLen - 1; l >= 0; l--) {
230 for (int32_t i = 0; i < len; i++) {
231 if (ALPHABET_STRING[i] == encodedContents[l]) {
232 ToIntArray(CHARACTER_ENCODINGS[i], widths);
233 pos += AppendPattern(result, pos, widths, 9, 1, e);
234 if (e != BCExceptionNO) {
235 FX_Free(result);
236 return nullptr;
237 }
238 }
239 }
240 pos += AppendPattern(result, pos, narrowWhite, 1, 0, e);
241 if (e != BCExceptionNO) {
242 FX_Free(result);
243 return nullptr;
244 }
245 }
246 ToIntArray(CHARACTER_ENCODINGS[39], widths);
247 pos += AppendPattern(result, pos, widths, 9, 1, e);
248 if (e != BCExceptionNO) {
249 FX_Free(result);
250 return nullptr;
251 }
252 for (int32_t i = 0; i < codeWidth / 2; i++) {
253 result[i] ^= result[codeWidth - 1 - i];
254 result[codeWidth - 1 - i] ^= result[i];
255 result[i] ^= result[codeWidth - 1 - i];
256 }
257 return result;
258 }
encodedContents(const CFX_WideStringC & contents,int32_t & e)259 CFX_WideString CBC_OnedCode39Writer::encodedContents(
260 const CFX_WideStringC& contents,
261 int32_t& e) {
262 CFX_WideString encodedContents(contents);
263 if (m_bCalcChecksum && m_bPrintChecksum) {
264 CFX_WideString checksumContent = FilterContents(contents);
265 CFX_ByteString str = checksumContent.UTF8Encode();
266 FX_CHAR checksum;
267 checksum = CalcCheckSum(str, e);
268 if (e != BCExceptionNO)
269 return CFX_WideString();
270 str += checksum;
271 encodedContents += checksum;
272 }
273 return encodedContents;
274 }
RenderResult(const CFX_WideStringC & contents,uint8_t * code,int32_t codeLength,bool isDevice,int32_t & e)275 void CBC_OnedCode39Writer::RenderResult(const CFX_WideStringC& contents,
276 uint8_t* code,
277 int32_t codeLength,
278 bool isDevice,
279 int32_t& e) {
280 CFX_WideString encodedCon = encodedContents(contents, e);
281 if (e != BCExceptionNO)
282 return;
283 CBC_OneDimWriter::RenderResult(encodedCon.AsStringC(), code, codeLength,
284 isDevice, e);
285 }
286