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1 // Copyright 2014 PDFium Authors. All rights reserved. | 1 // Copyright 2014 PDFium Authors. All rights reserved. |
2 // Use of this source code is governed by a BSD-style license that can be | 2 // Use of this source code is governed by a BSD-style license that can be |
3 // found in the LICENSE file. | 3 // found in the LICENSE file. |
4 | 4 |
5 // Original code copyright 2014 Foxit Software Inc. http://www.foxitsoftware.com | 5 // Original code copyright 2014 Foxit Software Inc. http://www.foxitsoftware.com |
6 // Original code is licensed as follows: | 6 // Original code is licensed as follows: |
7 /* | 7 /* |
8 * Copyright 2006-2007 Jeremias Maerki. | 8 * Copyright 2006-2007 Jeremias Maerki. |
9 * | 9 * |
10 * Licensed under the Apache License, Version 2.0 (the "License"); | 10 * Licensed under the Apache License, Version 2.0 (the "License"); |
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27 #include "BC_SymbolInfo.h" | 27 #include "BC_SymbolInfo.h" |
28 #include "BC_EncoderContext.h" | 28 #include "BC_EncoderContext.h" |
29 #include "BC_HighLevelEncoder.h" | 29 #include "BC_HighLevelEncoder.h" |
30 #include "BC_ASCIIEncoder.h" | 30 #include "BC_ASCIIEncoder.h" |
31 CBC_ASCIIEncoder::CBC_ASCIIEncoder() | 31 CBC_ASCIIEncoder::CBC_ASCIIEncoder() |
32 { | 32 { |
33 } | 33 } |
34 CBC_ASCIIEncoder::~CBC_ASCIIEncoder() | 34 CBC_ASCIIEncoder::~CBC_ASCIIEncoder() |
35 { | 35 { |
36 } | 36 } |
37 FX_INT32 CBC_ASCIIEncoder::getEncodingMode() | 37 int32_t CBC_ASCIIEncoder::getEncodingMode() |
38 { | 38 { |
39 return ASCII_ENCODATION; | 39 return ASCII_ENCODATION; |
40 } | 40 } |
41 void CBC_ASCIIEncoder::Encode(CBC_EncoderContext &context, FX_INT32 &e) | 41 void CBC_ASCIIEncoder::Encode(CBC_EncoderContext &context, int32_t &e) |
42 { | 42 { |
43 FX_INT32 n = CBC_HighLevelEncoder::determineConsecutiveDigitCount(context.m_
msg, context.m_pos); | 43 int32_t n = CBC_HighLevelEncoder::determineConsecutiveDigitCount(context.m_m
sg, context.m_pos); |
44 if (n >= 2) { | 44 if (n >= 2) { |
45 FX_WCHAR code = encodeASCIIDigits(context.m_msg.GetAt(context.m_pos), co
ntext.m_msg.GetAt(context.m_pos + 1), e); | 45 FX_WCHAR code = encodeASCIIDigits(context.m_msg.GetAt(context.m_pos), co
ntext.m_msg.GetAt(context.m_pos + 1), e); |
46 if (e != BCExceptionNO) { | 46 if (e != BCExceptionNO) { |
47 return; | 47 return; |
48 } | 48 } |
49 context.writeCodeword(code); | 49 context.writeCodeword(code); |
50 context.m_pos += 2; | 50 context.m_pos += 2; |
51 } else { | 51 } else { |
52 FX_WCHAR c = context.getCurrentChar(); | 52 FX_WCHAR c = context.getCurrentChar(); |
53 FX_INT32 newMode = CBC_HighLevelEncoder::lookAheadTest(context.m_msg, co
ntext.m_pos, getEncodingMode()); | 53 int32_t newMode = CBC_HighLevelEncoder::lookAheadTest(context.m_msg, con
text.m_pos, getEncodingMode()); |
54 if (newMode != getEncodingMode()) { | 54 if (newMode != getEncodingMode()) { |
55 switch (newMode) { | 55 switch (newMode) { |
56 case BASE256_ENCODATION: | 56 case BASE256_ENCODATION: |
57 context.writeCodeword(CBC_HighLevelEncoder::LATCH_TO_BASE256
); | 57 context.writeCodeword(CBC_HighLevelEncoder::LATCH_TO_BASE256
); |
58 context.signalEncoderChange(BASE256_ENCODATION); | 58 context.signalEncoderChange(BASE256_ENCODATION); |
59 return; | 59 return; |
60 case C40_ENCODATION: | 60 case C40_ENCODATION: |
61 context.writeCodeword(CBC_HighLevelEncoder::LATCH_TO_C40); | 61 context.writeCodeword(CBC_HighLevelEncoder::LATCH_TO_C40); |
62 context.signalEncoderChange(C40_ENCODATION); | 62 context.signalEncoderChange(C40_ENCODATION); |
63 return; | 63 return; |
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80 } else if (CBC_HighLevelEncoder::isExtendedASCII(c)) { | 80 } else if (CBC_HighLevelEncoder::isExtendedASCII(c)) { |
81 context.writeCodeword(CBC_HighLevelEncoder::UPPER_SHIFT); | 81 context.writeCodeword(CBC_HighLevelEncoder::UPPER_SHIFT); |
82 context.writeCodeword((FX_WCHAR) (c - 128 + 1)); | 82 context.writeCodeword((FX_WCHAR) (c - 128 + 1)); |
83 context.m_pos++; | 83 context.m_pos++; |
84 } else { | 84 } else { |
85 context.writeCodeword((FX_WCHAR) (c + 1)); | 85 context.writeCodeword((FX_WCHAR) (c + 1)); |
86 context.m_pos++; | 86 context.m_pos++; |
87 } | 87 } |
88 } | 88 } |
89 } | 89 } |
90 FX_WCHAR CBC_ASCIIEncoder::encodeASCIIDigits(FX_WCHAR digit1, FX_WCHAR digit2, F
X_INT32 &e) | 90 FX_WCHAR CBC_ASCIIEncoder::encodeASCIIDigits(FX_WCHAR digit1, FX_WCHAR digit2, i
nt32_t &e) |
91 { | 91 { |
92 if (CBC_HighLevelEncoder::isDigit(digit1) && CBC_HighLevelEncoder::isDigit(d
igit2)) { | 92 if (CBC_HighLevelEncoder::isDigit(digit1) && CBC_HighLevelEncoder::isDigit(d
igit2)) { |
93 FX_INT32 num = (digit1 - 48) * 10 + (digit2 - 48); | 93 int32_t num = (digit1 - 48) * 10 + (digit2 - 48); |
94 FX_WCHAR a = (FX_WCHAR) (num + 130); | 94 FX_WCHAR a = (FX_WCHAR) (num + 130); |
95 return (FX_WCHAR) (num + 130); | 95 return (FX_WCHAR) (num + 130); |
96 } | 96 } |
97 e = BCExceptionIllegalArgumentNotGigits; | 97 e = BCExceptionIllegalArgumentNotGigits; |
98 return 0; | 98 return 0; |
99 } | 99 } |
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