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 2006-2007 Jeremias Maerki.
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/datamatrix/BC_X12Encoder.h"
24
25 #include "core/fxcrt/fx_extension.h"
26 #include "fxbarcode/datamatrix/BC_C40Encoder.h"
27 #include "fxbarcode/datamatrix/BC_Encoder.h"
28 #include "fxbarcode/datamatrix/BC_EncoderContext.h"
29 #include "fxbarcode/datamatrix/BC_HighLevelEncoder.h"
30 #include "fxbarcode/datamatrix/BC_SymbolInfo.h"
31
32 CBC_X12Encoder::CBC_X12Encoder() = default;
33
34 CBC_X12Encoder::~CBC_X12Encoder() = default;
35
GetEncodingMode()36 CBC_HighLevelEncoder::Encoding CBC_X12Encoder::GetEncodingMode() {
37 return CBC_HighLevelEncoder::Encoding::X12;
38 }
39
Encode(CBC_EncoderContext * context)40 bool CBC_X12Encoder::Encode(CBC_EncoderContext* context) {
41 WideString buffer;
42 while (context->hasMoreCharacters()) {
43 wchar_t c = context->getCurrentChar();
44 context->m_pos++;
45 if (EncodeChar(c, &buffer) <= 0)
46 return false;
47
48 size_t count = buffer.GetLength();
49 if ((count % 3) == 0) {
50 WriteNextTriplet(context, &buffer);
51 CBC_HighLevelEncoder::Encoding newMode =
52 CBC_HighLevelEncoder::LookAheadTest(context->m_msg, context->m_pos,
53 GetEncodingMode());
54 if (newMode != GetEncodingMode()) {
55 context->SignalEncoderChange(newMode);
56 break;
57 }
58 }
59 }
60 return HandleEOD(context, &buffer);
61 }
62
HandleEOD(CBC_EncoderContext * context,WideString * buffer)63 bool CBC_X12Encoder::HandleEOD(CBC_EncoderContext* context,
64 WideString* buffer) {
65 if (!context->UpdateSymbolInfo())
66 return false;
67
68 int32_t available =
69 context->m_symbolInfo->data_capacity() - context->getCodewordCount();
70 size_t count = buffer->GetLength();
71 if (count == 2) {
72 context->writeCodeword(CBC_HighLevelEncoder::X12_UNLATCH);
73 context->m_pos -= 2;
74 context->SignalEncoderChange(CBC_HighLevelEncoder::Encoding::ASCII);
75 } else if (count == 1) {
76 context->m_pos--;
77 if (available > 1) {
78 context->writeCodeword(CBC_HighLevelEncoder::X12_UNLATCH);
79 }
80 context->SignalEncoderChange(CBC_HighLevelEncoder::Encoding::ASCII);
81 }
82 return true;
83 }
84
EncodeChar(wchar_t c,WideString * sb)85 int32_t CBC_X12Encoder::EncodeChar(wchar_t c, WideString* sb) {
86 if (c == '\r')
87 *sb += (wchar_t)'\0';
88 else if (c == '*')
89 *sb += (wchar_t)'\1';
90 else if (c == '>')
91 *sb += (wchar_t)'\2';
92 else if (c == ' ')
93 *sb += (wchar_t)'\3';
94 else if (FXSYS_IsDecimalDigit(c))
95 *sb += (wchar_t)(c - 48 + 4);
96 else if (FXSYS_IsUpperASCII(c))
97 *sb += (wchar_t)(c - 65 + 14);
98 else
99 return 0;
100 return 1;
101 }
102