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path: root/fxbarcode/datamatrix/BC_C40Encoder.cpp
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Diffstat (limited to 'fxbarcode/datamatrix/BC_C40Encoder.cpp')
-rw-r--r--fxbarcode/datamatrix/BC_C40Encoder.cpp200
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diff --git a/fxbarcode/datamatrix/BC_C40Encoder.cpp b/fxbarcode/datamatrix/BC_C40Encoder.cpp
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+// 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;
+}