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path: root/xfa/fxbarcode/datamatrix/BC_Base256Encoder.cpp
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Diffstat (limited to 'xfa/fxbarcode/datamatrix/BC_Base256Encoder.cpp')
-rw-r--r--xfa/fxbarcode/datamatrix/BC_Base256Encoder.cpp87
1 files changed, 87 insertions, 0 deletions
diff --git a/xfa/fxbarcode/datamatrix/BC_Base256Encoder.cpp b/xfa/fxbarcode/datamatrix/BC_Base256Encoder.cpp
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+++ b/xfa/fxbarcode/datamatrix/BC_Base256Encoder.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 "xfa/fxbarcode/BC_Dimension.h"
+#include "xfa/fxbarcode/datamatrix/BC_Base256Encoder.h"
+#include "xfa/fxbarcode/datamatrix/BC_Encoder.h"
+#include "xfa/fxbarcode/datamatrix/BC_EncoderContext.h"
+#include "xfa/fxbarcode/datamatrix/BC_HighLevelEncoder.h"
+#include "xfa/fxbarcode/datamatrix/BC_SymbolInfo.h"
+#include "xfa/fxbarcode/datamatrix/BC_SymbolShapeHint.h"
+
+CBC_Base256Encoder::CBC_Base256Encoder() {}
+CBC_Base256Encoder::~CBC_Base256Encoder() {}
+int32_t CBC_Base256Encoder::getEncodingMode() {
+ return BASE256_ENCODATION;
+}
+void CBC_Base256Encoder::Encode(CBC_EncoderContext& context, int32_t& e) {
+ CFX_WideString buffer;
+ buffer += (FX_WCHAR)'\0';
+ while (context.hasMoreCharacters()) {
+ FX_WCHAR c = context.getCurrentChar();
+ buffer += c;
+ context.m_pos++;
+ int32_t newMode = CBC_HighLevelEncoder::lookAheadTest(
+ context.m_msg, context.m_pos, getEncodingMode());
+ if (newMode != getEncodingMode()) {
+ context.signalEncoderChange(newMode);
+ break;
+ }
+ }
+ int32_t dataCount = buffer.GetLength() - 1;
+ FX_CHAR buf[128];
+ FXSYS_itoa(dataCount, buf, 10);
+ buffer.SetAt(0, FX_WCHAR(*buf) - '0');
+ int32_t lengthFieldSize = 1;
+ int32_t currentSize =
+ context.getCodewordCount() + dataCount + lengthFieldSize;
+ context.updateSymbolInfo(currentSize, e);
+ if (e != BCExceptionNO) {
+ return;
+ }
+ FX_BOOL mustPad = (context.m_symbolInfo->m_dataCapacity - currentSize) > 0;
+ if (context.hasMoreCharacters() || mustPad) {
+ if (dataCount <= 249) {
+ buffer.SetAt(0, (FX_WCHAR)dataCount);
+ } else if (dataCount > 249 && dataCount <= 1555) {
+ buffer.SetAt(0, (FX_WCHAR)((dataCount / 250) + 249));
+ buffer.Insert(1, (FX_WCHAR)(dataCount % 250));
+ } else {
+ e = BCExceptionIllegalStateMessageLengthInvalid;
+ return;
+ }
+ }
+ for (int32_t i = 0, c = buffer.GetLength(); i < c; i++) {
+ context.writeCodeword(
+ randomize255State(buffer.GetAt(i), context.getCodewordCount() + 1));
+ }
+}
+FX_WCHAR CBC_Base256Encoder::randomize255State(FX_WCHAR ch,
+ int32_t codewordPosition) {
+ int32_t pseudoRandom = ((149 * codewordPosition) % 255) + 1;
+ int32_t tempVariable = ch + pseudoRandom;
+ if (tempVariable <= 255) {
+ return (FX_WCHAR)tempVariable;
+ } else {
+ return (FX_WCHAR)(tempVariable - 256);
+ }
+}