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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 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 "xfa/src/fxbarcode/BC_Dimension.h" | |
24 #include "xfa/src/fxbarcode/datamatrix/BC_ASCIIEncoder.h" | |
25 #include "xfa/src/fxbarcode/datamatrix/BC_Encoder.h" | |
26 #include "xfa/src/fxbarcode/datamatrix/BC_EncoderContext.h" | |
27 #include "xfa/src/fxbarcode/datamatrix/BC_HighLevelEncoder.h" | |
28 #include "xfa/src/fxbarcode/datamatrix/BC_SymbolInfo.h" | |
29 #include "xfa/src/fxbarcode/datamatrix/BC_SymbolShapeHint.h" | |
30 | |
31 CBC_ASCIIEncoder::CBC_ASCIIEncoder() {} | |
32 CBC_ASCIIEncoder::~CBC_ASCIIEncoder() {} | |
33 int32_t CBC_ASCIIEncoder::getEncodingMode() { | |
34 return ASCII_ENCODATION; | |
35 } | |
36 void CBC_ASCIIEncoder::Encode(CBC_EncoderContext& context, int32_t& e) { | |
37 int32_t n = CBC_HighLevelEncoder::determineConsecutiveDigitCount( | |
38 context.m_msg, context.m_pos); | |
39 if (n >= 2) { | |
40 FX_WCHAR code = | |
41 encodeASCIIDigits(context.m_msg.GetAt(context.m_pos), | |
42 context.m_msg.GetAt(context.m_pos + 1), e); | |
43 if (e != BCExceptionNO) { | |
44 return; | |
45 } | |
46 context.writeCodeword(code); | |
47 context.m_pos += 2; | |
48 } else { | |
49 FX_WCHAR c = context.getCurrentChar(); | |
50 int32_t newMode = CBC_HighLevelEncoder::lookAheadTest( | |
51 context.m_msg, context.m_pos, getEncodingMode()); | |
52 if (newMode != getEncodingMode()) { | |
53 switch (newMode) { | |
54 case BASE256_ENCODATION: | |
55 context.writeCodeword(CBC_HighLevelEncoder::LATCH_TO_BASE256); | |
56 context.signalEncoderChange(BASE256_ENCODATION); | |
57 return; | |
58 case C40_ENCODATION: | |
59 context.writeCodeword(CBC_HighLevelEncoder::LATCH_TO_C40); | |
60 context.signalEncoderChange(C40_ENCODATION); | |
61 return; | |
62 case X12_ENCODATION: | |
63 context.writeCodeword(CBC_HighLevelEncoder::LATCH_TO_ANSIX12); | |
64 context.signalEncoderChange(X12_ENCODATION); | |
65 break; | |
66 case TEXT_ENCODATION: | |
67 context.writeCodeword(CBC_HighLevelEncoder::LATCH_TO_TEXT); | |
68 context.signalEncoderChange(TEXT_ENCODATION); | |
69 break; | |
70 case EDIFACT_ENCODATION: | |
71 context.writeCodeword(CBC_HighLevelEncoder::LATCH_TO_EDIFACT); | |
72 context.signalEncoderChange(EDIFACT_ENCODATION); | |
73 break; | |
74 default: | |
75 e = BCExceptionIllegalStateIllegalMode; | |
76 return; | |
77 } | |
78 } else if (CBC_HighLevelEncoder::isExtendedASCII(c)) { | |
79 context.writeCodeword(CBC_HighLevelEncoder::UPPER_SHIFT); | |
80 context.writeCodeword((FX_WCHAR)(c - 128 + 1)); | |
81 context.m_pos++; | |
82 } else { | |
83 context.writeCodeword((FX_WCHAR)(c + 1)); | |
84 context.m_pos++; | |
85 } | |
86 } | |
87 } | |
88 FX_WCHAR CBC_ASCIIEncoder::encodeASCIIDigits(FX_WCHAR digit1, | |
89 FX_WCHAR digit2, | |
90 int32_t& e) { | |
91 if (CBC_HighLevelEncoder::isDigit(digit1) && | |
92 CBC_HighLevelEncoder::isDigit(digit2)) { | |
93 int32_t num = (digit1 - 48) * 10 + (digit2 - 48); | |
94 return (FX_WCHAR)(num + 130); | |
95 } | |
96 e = BCExceptionIllegalArgumentNotGigits; | |
97 return 0; | |
98 } | |
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