Organize barcode codes into modules.

xfa/src/fxbarcode/src/BC_Base256Encoder.cpp

-// 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 "barcode.h"
-#include "include/BC_Encoder.h"
-#include "include/BC_Dimension.h"
-#include "include/BC_SymbolShapeHint.h"
-#include "include/BC_SymbolInfo.h"
-#include "include/BC_EncoderContext.h"
-#include "include/BC_HighLevelEncoder.h"
-#include "include/BC_Base256Encoder.h"
-CBC_Base256Encoder::CBC_Base256Encoder()
-{
-}
-CBC_Base256Encoder::~CBC_Base256Encoder()
-{
-}
-FX_INT32 CBC_Base256Encoder::getEncodingMode()
-{
-    return BASE256_ENCODATION;
-}
-void CBC_Base256Encoder::Encode(CBC_EncoderContext &context, FX_INT32 &e)
-{
-    CFX_WideString buffer;
-    buffer += (FX_WCHAR)'\0';
-    while (context.hasMoreCharacters()) {
-        FX_WCHAR c = context.getCurrentChar();
-        buffer += c;
-        context.m_pos++;
-        FX_INT32 newMode = CBC_HighLevelEncoder::lookAheadTest(context.m_msg, context.m_pos, getEncodingMode());
-        if (newMode != getEncodingMode()) {
-            context.signalEncoderChange(newMode);
-            break;
-        }
-    }
-    FX_INT32 dataCount = buffer.GetLength() - 1;
-    FX_CHAR buf[128];
-#if defined(_FX_WINAPI_PARTITION_APP_)
-    memset(buf, 0, sizeof(FX_CHAR) * 128);
-    _itoa_s(dataCount, buf, 128, 10);
-#else
-    FXSYS_itoa(dataCount, buf, 10);
-#endif
-    buffer.SetAt(0, FX_WCHAR(*buf) - '0');
-    FX_INT32 lengthFieldSize = 1;
-    FX_INT32 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 (FX_INT32 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, FX_INT32 codewordPosition)
-{
-    FX_INT32 pseudoRandom = ((149 * codewordPosition) % 255) + 1;
-    FX_INT32 tempVariable = ch + pseudoRandom;
-    if (tempVariable <= 255) {
-        return (FX_WCHAR) tempVariable;
-    } else {
-        return (FX_WCHAR) (tempVariable - 256);
-    }
-}