diff options
Diffstat (limited to 'fxbarcode/datamatrix/BC_C40Encoder.cpp')
| -rw-r--r-- | fxbarcode/datamatrix/BC_C40Encoder.cpp | 200 |
1 files changed, 200 insertions, 0 deletions
diff --git a/fxbarcode/datamatrix/BC_C40Encoder.cpp b/fxbarcode/datamatrix/BC_C40Encoder.cpp new file mode 100644 index 0000000000..7c3f4e7d7a --- /dev/null +++ b/fxbarcode/datamatrix/BC_C40Encoder.cpp @@ -0,0 +1,200 @@ +// Copyright 2014 PDFium Authors. All rights reserved. +// Use of this source code is governed by a BSD-style license that can be +// found in the LICENSE file. + +// Original code copyright 2014 Foxit Software Inc. http://www.foxitsoftware.com +// Original code is licensed as follows: +/* + * Copyright 2006-2007 Jeremias Maerki. + * + * Licensed under the Apache License, Version 2.0 (the "License"); + * you may not use this file except in compliance with the License. + * You may obtain a copy of the License at + * + * http://www.apache.org/licenses/LICENSE-2.0 + * + * Unless required by applicable law or agreed to in writing, software + * distributed under the License is distributed on an "AS IS" BASIS, + * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. + * See the License for the specific language governing permissions and + * limitations under the License. + */ + +#include "fxbarcode/BC_Dimension.h" +#include "fxbarcode/common/BC_CommonBitMatrix.h" +#include "fxbarcode/datamatrix/BC_C40Encoder.h" +#include "fxbarcode/datamatrix/BC_Encoder.h" +#include "fxbarcode/datamatrix/BC_EncoderContext.h" +#include "fxbarcode/datamatrix/BC_HighLevelEncoder.h" +#include "fxbarcode/datamatrix/BC_SymbolInfo.h" +#include "fxbarcode/datamatrix/BC_SymbolShapeHint.h" + +CBC_C40Encoder::CBC_C40Encoder() {} +CBC_C40Encoder::~CBC_C40Encoder() {} +int32_t CBC_C40Encoder::getEncodingMode() { + return C40_ENCODATION; +} +void CBC_C40Encoder::Encode(CBC_EncoderContext& context, int32_t& e) { + CFX_WideString buffer; + while (context.hasMoreCharacters()) { + wchar_t c = context.getCurrentChar(); + context.m_pos++; + int32_t lastCharSize = encodeChar(c, buffer, e); + if (e != BCExceptionNO) { + return; + } + int32_t unwritten = (buffer.GetLength() / 3) * 2; + int32_t curCodewordCount = context.getCodewordCount() + unwritten; + context.updateSymbolInfo(curCodewordCount, e); + if (e != BCExceptionNO) { + return; + } + int32_t available = context.m_symbolInfo->m_dataCapacity - curCodewordCount; + if (!context.hasMoreCharacters()) { + CFX_WideString removed; + if ((buffer.GetLength() % 3) == 2) { + if (available < 2 || available > 2) { + lastCharSize = + backtrackOneCharacter(context, buffer, removed, lastCharSize, e); + if (e != BCExceptionNO) { + return; + } + } + } + while ((buffer.GetLength() % 3) == 1 && + ((lastCharSize <= 3 && available != 1) || lastCharSize > 3)) { + lastCharSize = + backtrackOneCharacter(context, buffer, removed, lastCharSize, e); + if (e != BCExceptionNO) { + return; + } + } + break; + } + int32_t count = buffer.GetLength(); + if ((count % 3) == 0) { + int32_t newMode = CBC_HighLevelEncoder::lookAheadTest( + context.m_msg, context.m_pos, getEncodingMode()); + if (newMode != getEncodingMode()) { + context.signalEncoderChange(newMode); + break; + } + } + } + handleEOD(context, buffer, e); +} +void CBC_C40Encoder::writeNextTriplet(CBC_EncoderContext& context, + CFX_WideString& buffer) { + context.writeCodewords(encodeToCodewords(buffer, 0)); + buffer.Delete(0, 3); +} +void CBC_C40Encoder::handleEOD(CBC_EncoderContext& context, + CFX_WideString& buffer, + int32_t& e) { + int32_t unwritten = (buffer.GetLength() / 3) * 2; + int32_t rest = buffer.GetLength() % 3; + int32_t curCodewordCount = context.getCodewordCount() + unwritten; + context.updateSymbolInfo(curCodewordCount, e); + if (e != BCExceptionNO) { + return; + } + int32_t available = context.m_symbolInfo->m_dataCapacity - curCodewordCount; + if (rest == 2) { + buffer += (wchar_t)'\0'; + while (buffer.GetLength() >= 3) { + writeNextTriplet(context, buffer); + } + if (context.hasMoreCharacters()) { + context.writeCodeword(CBC_HighLevelEncoder::C40_UNLATCH); + } + } else if (available == 1 && rest == 1) { + while (buffer.GetLength() >= 3) { + writeNextTriplet(context, buffer); + } + if (context.hasMoreCharacters()) { + context.writeCodeword(CBC_HighLevelEncoder::C40_UNLATCH); + } + context.m_pos--; + } else if (rest == 0) { + while (buffer.GetLength() >= 3) { + writeNextTriplet(context, buffer); + } + if (available > 0 || context.hasMoreCharacters()) { + context.writeCodeword(CBC_HighLevelEncoder::C40_UNLATCH); + } + } else { + e = BCExceptionIllegalStateUnexpectedCase; + return; + } + context.signalEncoderChange(ASCII_ENCODATION); +} +int32_t CBC_C40Encoder::encodeChar(wchar_t c, CFX_WideString& sb, int32_t& e) { + if (c == ' ') { + sb += (wchar_t)'\3'; + return 1; + } else if ((c >= '0') && (c <= '9')) { + sb += (wchar_t)(c - 48 + 4); + return 1; + } else if ((c >= 'A') && (c <= 'Z')) { + sb += (wchar_t)(c - 65 + 14); + return 1; + } else if (c <= 0x1f) { + sb += (wchar_t)'\0'; + sb += c; + return 2; + } else if ((c >= '!') && (c <= '/')) { + sb += (wchar_t)'\1'; + sb += (wchar_t)(c - 33); + return 2; + } else if ((c >= ':') && (c <= '@')) { + sb += (wchar_t)'\1'; + sb += (wchar_t)(c - 58 + 15); + return 2; + } else if ((c >= '[') && (c <= '_')) { + sb += (wchar_t)'\1'; + sb += (wchar_t)(c - 91 + 22); + return 2; + } else if ((c >= 60) && (c <= 0x7f)) { + sb += (wchar_t)'\2'; + sb += (wchar_t)(c - 96); + return 2; + } else if (c >= 80) { + sb += (wchar_t)'\1'; + sb += (wchar_t)0x001e; + int32_t len = 2; + len += encodeChar((c - 128), sb, e); + if (e != BCExceptionNO) + return 0; + return len; + } else { + e = BCExceptionIllegalArgument; + return 0; + } +} +int32_t CBC_C40Encoder::backtrackOneCharacter(CBC_EncoderContext& context, + CFX_WideString& buffer, + CFX_WideString& removed, + int32_t lastCharSize, + int32_t& e) { + int32_t count = buffer.GetLength(); + buffer.Delete(count - lastCharSize, count); + context.m_pos--; + wchar_t c = context.getCurrentChar(); + lastCharSize = encodeChar(c, removed, e); + if (e != BCExceptionNO) + return -1; + context.resetSymbolInfo(); + return lastCharSize; +} +CFX_WideString CBC_C40Encoder::encodeToCodewords(CFX_WideString sb, + int32_t startPos) { + wchar_t c1 = sb.GetAt(startPos); + wchar_t c2 = sb.GetAt(startPos + 1); + wchar_t c3 = sb.GetAt(startPos + 2); + int32_t v = (1600 * c1) + (40 * c2) + c3 + 1; + wchar_t cw1 = (wchar_t)(v / 256); + wchar_t cw2 = (wchar_t)(v % 256); + CFX_WideString b1(cw1); + CFX_WideString b2(cw2); + return b1 + b2; +} |