Organize barcode codes into modules.

xfa/src/fxbarcode/src/BC_OnedCodaBarReader.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 2008 ZXing authors
- *
- * 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_Reader.h"
-#include "include/BC_OneDReader.h"
-#include "include/BC_OnedCode39Reader.h"
-#include "include/BC_CommonBitArray.h"
-#include "include/BC_OnedCodaBarReader.h"
-FX_LPCSTR CBC_OnedCodaBarReader::ALPHABET_STRING = "0123456789-$:/.+ABCDTN";
-const FX_INT32 CBC_OnedCodaBarReader::CHARACTER_ENCODINGS[22] = {
-    0x003, 0x006, 0x009, 0x060, 0x012, 0x042, 0x021, 0x024, 0x030, 0x048,
-    0x00c, 0x018, 0x045, 0x051, 0x054, 0x015, 0x01A, 0x029, 0x00B, 0x00E,
-    0x01A, 0x029
-};
-const FX_INT32 CBC_OnedCodaBarReader::minCharacterLength = 3;
-const FX_CHAR CBC_OnedCodaBarReader::STARTEND_ENCODING[8] = {'E', '*', 'A', 'B', 'C', 'D', 'T', 'N'};
-CBC_OnedCodaBarReader::CBC_OnedCodaBarReader()
-{
-}
-CBC_OnedCodaBarReader::~CBC_OnedCodaBarReader()
-{
-}
-CFX_ByteString CBC_OnedCodaBarReader::DecodeRow(FX_INT32 rowNumber, CBC_CommonBitArray *row, FX_INT32 hints, FX_INT32 &e)
-{
-    CFX_Int32Array *int32Ptr = FindAsteriskPattern(row, e);
-    BC_EXCEPTION_CHECK_ReturnValue(e, "");
-    CBC_AutoPtr<CFX_Int32Array> start(int32Ptr);
-    (*start)[1] = 0;
-    FX_INT32 nextStart = (*start)[1];
-    FX_INT32 end = row->GetSize();
-    while (nextStart < end && !row->Get(nextStart)) {
-        nextStart++;
-    }
-    CFX_ByteString result;
-    CFX_Int32Array counters;
-    counters.SetSize(7);
-    FX_CHAR decodedChar;
-    FX_INT32 lastStart;
-    do {
-        RecordPattern(row, nextStart, &counters, e);
-        BC_EXCEPTION_CHECK_ReturnValue(e, "");
-        decodedChar = ToNarrowWidePattern(&counters);
-        if (decodedChar == '!') {
-            e = BCExceptionNotFound;
-            return "";
-        }
-        result += decodedChar;
-        lastStart = nextStart;
-        for (FX_INT32 i = 0; i < counters.GetSize(); i++) {
-            nextStart += counters[i];
-        }
-        while (nextStart < end && !row->Get(nextStart)) {
-            nextStart++;
-        }
-    } while (nextStart < end);
-    FX_INT32 lastPatternSize = 0;
-    for (FX_INT32 j = 0; j < counters.GetSize(); j++) {
-        lastPatternSize += counters[j];
-    }
-    FX_INT32 whiteSpaceAfterEnd = nextStart - lastStart - lastPatternSize;
-    if (nextStart != end && (whiteSpaceAfterEnd / 2 < lastPatternSize)) {
-        e = BCExceptionNotFound;
-        return "";
-    }
-    if (result.GetLength() < 2) {
-        e = BCExceptionNotFound;
-        return "";
-    }
-    FX_CHAR startchar = result[0];
-    if (!ArrayContains(STARTEND_ENCODING, startchar)) {
-        e =  BCExceptionNotFound;
-        return "";
-    }
-    FX_INT32 len = result.GetLength();
-    CFX_ByteString temp = result;
-    for (FX_INT32 k = 1; k < result.GetLength(); k++) {
-        if (ArrayContains(STARTEND_ENCODING, result[k])) {
-            if ((k + 1) != result.GetLength()) {
-                result.Delete(1, k);
-                k = 1;
-            }
-        }
-    }
-    if (result.GetLength() < 5) {
-        FX_INT32 index = temp.Find(result.Mid(1, result.GetLength() - 1));
-        if (index == len - (result.GetLength() - 1)) {
-            e = BCExceptionNotFound;
-            return "";
-        }
-    }
-    if (result.GetLength() > minCharacterLength) {
-        result = result.Mid(1, result.GetLength() - 2);
-    } else {
-        e = BCExceptionNotFound;
-        return "";
-    }
-    return result;
-}
-CFX_Int32Array *CBC_OnedCodaBarReader::FindAsteriskPattern(CBC_CommonBitArray *row, FX_INT32 &e)
-{
-    FX_INT32 width = row->GetSize();
-    FX_INT32 rowOffset = 0;
-    while (rowOffset < width) {
-        if (row->Get(rowOffset)) {
-            break;
-        }
-        rowOffset++;
-    }
-    FX_INT32 counterPosition = 0;
-    CFX_Int32Array counters;
-    counters.SetSize(7);
-    FX_INT32 patternStart = rowOffset;
-    FX_BOOL isWhite = FALSE;
-    FX_INT32 patternLength = counters.GetSize();
-    for (FX_INT32 i = rowOffset; i < width; i++) {
-        FX_BOOL pixel = row->Get(i);
-        if (pixel ^ isWhite) {
-            counters[counterPosition]++;
-        } else {
-            if (counterPosition == patternLength - 1) {
-                if (ArrayContains(STARTEND_ENCODING, ToNarrowWidePattern(&counters))) {
-                    FX_BOOL btemp3 = row->IsRange(FX_MAX(0, patternStart - (i - patternStart) / 2), patternStart, FALSE, e);
-                    BC_EXCEPTION_CHECK_ReturnValue(e, NULL);
-                    if (btemp3) {
-                        CFX_Int32Array *result = FX_NEW CFX_Int32Array();
-                        result->SetSize(2);
-                        (*result)[0] = patternStart;
-                        (*result)[1] = i;
-                        return result;
-                    }
-                }
-                patternStart += counters[0] + counters[1];
-                for (FX_INT32 y = 2; y < patternLength; y++) {
-                    counters[y - 2] = counters[y];
-                }
-                counters[patternLength - 2] = 0;
-                counters[patternLength - 1] = 0;
-                counterPosition--;
-            } else {
-                counterPosition++;
-            }
-            counters[counterPosition] = 1;
-            isWhite = !isWhite;
-        }
-    }
-    e = BCExceptionNotFound;
-    return NULL;
-}
-FX_BOOL CBC_OnedCodaBarReader::ArrayContains(const FX_CHAR array[], FX_CHAR key)
-{
-    for(FX_INT32 i = 0; i < 8; i++) {
-        if(array[i] == key) {
-            return TRUE;
-        }
-    }
-    return FALSE;
-}
-FX_CHAR CBC_OnedCodaBarReader::ToNarrowWidePattern(CFX_Int32Array *counter)
-{
-    FX_INT32 numCounters = counter->GetSize();
-    if (numCounters < 1) {
-        return '!';
-    }
-    FX_INT32 averageCounter = 0;
-    FX_INT32 totalCounters = 0;
-    for (FX_INT32 i = 0; i < numCounters; i++) {
-        totalCounters += (*counter)[i];
-    }
-    averageCounter = totalCounters / numCounters;
-    FX_INT32 pattern = 0;
-    FX_INT32 wideCounters = 0;
-    for (FX_INT32 j = 0; j < numCounters; j++) {
-        if ((*counter)[j] > averageCounter) {
-            pattern |= 1 << (numCounters - 1 - j);
-            wideCounters++;
-        }
-    }
-    if ((wideCounters == 2) || (wideCounters == 3)) {
-        for (FX_INT32 k = 0; k < 22; k++) {
-            if (CHARACTER_ENCODINGS[k] == pattern) {
-                return (ALPHABET_STRING)[k];
-            }
-        }
-    }
-    return '!';
-}