| OLD | NEW |
|---|
| (Empty) |
| 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 "barcode.h" | |
| 24 #include "include/BC_Encoder.h" | |
| 25 #include "include/BC_Dimension.h" | |
| 26 #include "include/BC_CommonBitMatrix.h" | |
| 27 #include "include/BC_SymbolShapeHint.h" | |
| 28 #include "include/BC_SymbolInfo.h" | |
| 29 #include "include/BC_EncoderContext.h" | |
| 30 #include "include/BC_HighLevelEncoder.h" | |
| 31 #include "include/BC_C40Encoder.h" | |
| 32 CBC_C40Encoder::CBC_C40Encoder() | |
| 33 { | |
| 34 } | |
| 35 CBC_C40Encoder::~CBC_C40Encoder() | |
| 36 { | |
| 37 } | |
| 38 FX_INT32 CBC_C40Encoder::getEncodingMode() | |
| 39 { | |
| 40 return C40_ENCODATION; | |
| 41 } | |
| 42 void CBC_C40Encoder::Encode(CBC_EncoderContext &context, FX_INT32 &e) | |
| 43 { | |
| 44 CFX_WideString buffer; | |
| 45 while (context.hasMoreCharacters()) { | |
| 46 FX_WCHAR c = context.getCurrentChar(); | |
| 47 context.m_pos++; | |
| 48 FX_INT32 lastCharSize = encodeChar(c, buffer, e); | |
| 49 if (e != BCExceptionNO) { | |
| 50 return; | |
| 51 } | |
| 52 FX_INT32 unwritten = (buffer.GetLength() / 3) * 2; | |
| 53 FX_INT32 curCodewordCount = context.getCodewordCount() + unwritten; | |
| 54 context.updateSymbolInfo(curCodewordCount, e); | |
| 55 if (e != BCExceptionNO) { | |
| 56 return; | |
| 57 } | |
| 58 FX_INT32 available = context.m_symbolInfo->m_dataCapacity - curCodewordC
ount; | |
| 59 if (!context.hasMoreCharacters()) { | |
| 60 CFX_WideString removed; | |
| 61 if ((buffer.GetLength() % 3) == 2) { | |
| 62 if (available < 2 || available > 2) { | |
| 63 lastCharSize = backtrackOneCharacter(context, buffer, remove
d, lastCharSize, e); | |
| 64 if (e != BCExceptionNO) { | |
| 65 return; | |
| 66 } | |
| 67 } | |
| 68 } | |
| 69 while ((buffer.GetLength() % 3) == 1 | |
| 70 && ((lastCharSize <= 3 && available != 1) || lastCharSize >
3)) { | |
| 71 lastCharSize = backtrackOneCharacter(context, buffer, removed, l
astCharSize, e); | |
| 72 if (e != BCExceptionNO) { | |
| 73 return; | |
| 74 } | |
| 75 } | |
| 76 break; | |
| 77 } | |
| 78 FX_INT32 count = buffer.GetLength(); | |
| 79 if ((count % 3) == 0) { | |
| 80 FX_INT32 newMode = CBC_HighLevelEncoder::lookAheadTest(context.m_msg
, context.m_pos, getEncodingMode()); | |
| 81 if (newMode != getEncodingMode()) { | |
| 82 context.signalEncoderChange(newMode); | |
| 83 break; | |
| 84 } | |
| 85 } | |
| 86 } | |
| 87 handleEOD(context, buffer, e); | |
| 88 } | |
| 89 void CBC_C40Encoder::writeNextTriplet(CBC_EncoderContext &context, CFX_WideStrin
g &buffer) | |
| 90 { | |
| 91 context.writeCodewords(encodeToCodewords(buffer, 0)); | |
| 92 buffer.Delete(0, 3); | |
| 93 } | |
| 94 void CBC_C40Encoder::handleEOD(CBC_EncoderContext &context, CFX_WideString &buff
er, FX_INT32 &e) | |
| 95 { | |
| 96 FX_INT32 unwritten = (buffer.GetLength() / 3) * 2; | |
| 97 FX_INT32 rest = buffer.GetLength() % 3; | |
| 98 FX_INT32 curCodewordCount = context.getCodewordCount() + unwritten; | |
| 99 context.updateSymbolInfo(curCodewordCount, e); | |
| 100 if (e != BCExceptionNO) { | |
| 101 return; | |
| 102 } | |
| 103 FX_INT32 available = context.m_symbolInfo->m_dataCapacity - curCodewordCount
; | |
| 104 if (rest == 2) { | |
| 105 buffer += (FX_WCHAR)'\0'; | |
| 106 while (buffer.GetLength() >= 3) { | |
| 107 writeNextTriplet(context, buffer); | |
| 108 } | |
| 109 if (context.hasMoreCharacters()) { | |
| 110 context.writeCodeword(CBC_HighLevelEncoder::C40_UNLATCH); | |
| 111 } | |
| 112 } else if (available == 1 && rest == 1) { | |
| 113 while (buffer.GetLength() >= 3) { | |
| 114 writeNextTriplet(context, buffer); | |
| 115 } | |
| 116 if (context.hasMoreCharacters()) { | |
| 117 context.writeCodeword(CBC_HighLevelEncoder::C40_UNLATCH); | |
| 118 } | |
| 119 context.m_pos--; | |
| 120 } else if (rest == 0) { | |
| 121 while (buffer.GetLength() >= 3) { | |
| 122 writeNextTriplet(context, buffer); | |
| 123 } | |
| 124 if (available > 0 || context.hasMoreCharacters()) { | |
| 125 context.writeCodeword(CBC_HighLevelEncoder::C40_UNLATCH); | |
| 126 } | |
| 127 } else { | |
| 128 e = BCExceptionIllegalStateUnexpectedCase; | |
| 129 return; | |
| 130 } | |
| 131 context.signalEncoderChange(ASCII_ENCODATION); | |
| 132 } | |
| 133 FX_INT32 CBC_C40Encoder::encodeChar(FX_WCHAR c, CFX_WideString &sb, FX_INT32 &e) | |
| 134 { | |
| 135 if (c == ' ') { | |
| 136 sb += (FX_WCHAR)'\3'; | |
| 137 return 1; | |
| 138 } else if ((c >= '0') && (c <= '9')) { | |
| 139 sb += (FX_WCHAR)(c - 48 + 4); | |
| 140 return 1; | |
| 141 } else if ((c >= 'A') && (c <= 'Z')) { | |
| 142 sb += (FX_WCHAR)(c - 65 + 14); | |
| 143 return 1; | |
| 144 } else if ((c >= '\0') && (c <= 0x1f)) { | |
| 145 sb += (FX_WCHAR)'\0'; | |
| 146 sb += c; | |
| 147 return 2; | |
| 148 } else if ((c >= '!') && (c <= '/')) { | |
| 149 sb += (FX_WCHAR)'\1'; | |
| 150 sb += (FX_WCHAR)(c - 33); | |
| 151 return 2; | |
| 152 } else if ((c >= ':') && (c <= '@')) { | |
| 153 sb += (FX_WCHAR)'\1'; | |
| 154 sb += (FX_WCHAR)(c - 58 + 15); | |
| 155 return 2; | |
| 156 } else if ((c >= '[') && (c <= '_')) { | |
| 157 sb += (FX_WCHAR)'\1'; | |
| 158 sb += (FX_WCHAR)(c - 91 + 22); | |
| 159 return 2; | |
| 160 } else if ((c >= 60) && (c <= 0x7f)) { | |
| 161 sb += (FX_WCHAR)'\2'; | |
| 162 sb += (FX_WCHAR)(c - 96); | |
| 163 return 2; | |
| 164 } else if (c >= 80) { | |
| 165 sb += (FX_WCHAR)'\1'; | |
| 166 sb += (FX_WCHAR)0x001e; | |
| 167 FX_INT32 len = 2; | |
| 168 len += encodeChar((c - 128), sb, e); | |
| 169 BC_EXCEPTION_CHECK_ReturnValue(e, 0); | |
| 170 return len; | |
| 171 } else { | |
| 172 e = BCExceptionIllegalArgument; | |
| 173 return 0; | |
| 174 } | |
| 175 } | |
| 176 FX_INT32 CBC_C40Encoder::backtrackOneCharacter(CBC_EncoderContext &context, CFX_
WideString &buffer, CFX_WideString &removed, FX_INT32 lastCharSize, FX_INT32 &e) | |
| 177 { | |
| 178 FX_INT32 count = buffer.GetLength(); | |
| 179 buffer.Delete(count - lastCharSize, count); | |
| 180 context.m_pos--; | |
| 181 FX_WCHAR c = context.getCurrentChar(); | |
| 182 lastCharSize = encodeChar(c, removed, e); | |
| 183 BC_EXCEPTION_CHECK_ReturnValue(e, -1); | |
| 184 context.resetSymbolInfo(); | |
| 185 return lastCharSize; | |
| 186 } | |
| 187 CFX_WideString CBC_C40Encoder::encodeToCodewords(CFX_WideString sb, FX_INT32 sta
rtPos) | |
| 188 { | |
| 189 FX_WCHAR c1 = sb.GetAt(startPos); | |
| 190 FX_WCHAR c2 = sb.GetAt(startPos + 1); | |
| 191 FX_WCHAR c3 = sb.GetAt(startPos + 2); | |
| 192 FX_INT32 v = (1600 * c1) + (40 * c2) + c3 + 1; | |
| 193 FX_WCHAR cw1 = (FX_WCHAR) (v / 256); | |
| 194 FX_WCHAR cw2 = (FX_WCHAR) (v % 256); | |
| 195 CFX_WideString b1(cw1); | |
| 196 CFX_WideString b2(cw2); | |
| 197 return b1 + b2; | |
| 198 } | |
| OLD | NEW |
|---|
Chromium Code Reviews
Issue 842043002:
Organize barcode codes into modules. (Closed)
Base URL: https://pdfium.googlesource.com/pdfium.git@xfa