Organize barcode codes into modules.

xfa/src/fxbarcode/src/BC_QRDecodedBitStreamParser.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 2007 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_QRCoderMode.h"
-#include "include/BC_CommonBitSource.h"
-#include "include/BC_CommonECI.h"
-#include "include/BC_QRDecodedBitStreamParser.h"
-#include "include/BC_CommonCharacterSetECI.h"
-#include "include/BC_CommonDecoderResult.h"
-#include "include/BC_UtilCodingConvert.h"
-FX_LPCSTR CBC_QRDecodedBitStreamParser::UTF_8 = "utf8";
-const FX_CHAR CBC_QRDecodedBitStreamParser::ALPHANUMERIC_CHARS[45] = {
-    '0', '1', '2', '3', '4', '5', '6', '7', '8', '9', 'A', 'B',
-    'C', 'D', 'E', 'F', 'G', 'H', 'I', 'J', 'K', 'L', 'M', 'N',
-    'O', 'P', 'Q', 'R', 'S', 'T', 'U', 'V', 'W', 'X', 'Y', 'Z',
-    ' ', '$', '%', '*', '+', '-', '.', '/', ':'
-};
-CBC_QRDecodedBitStreamParser::CBC_QRDecodedBitStreamParser()
-{
-}
-CBC_QRDecodedBitStreamParser::~CBC_QRDecodedBitStreamParser()
-{
-}
-CBC_CommonDecoderResult* CBC_QRDecodedBitStreamParser::Decode(CFX_ByteArray *bytes, CBC_QRCoderVersion *version,
-        CBC_QRCoderErrorCorrectionLevel* ecLevel, FX_INT32 byteModeDecode, FX_INT32 &e)
-{
-    CBC_CommonBitSource bits(bytes);
-    CFX_ByteString result;
-    CBC_CommonCharacterSetECI* currentCharacterSetECI = NULL;
-    FX_BOOL fc1Infact = FALSE;
-    CFX_Int32Array byteSegments;
-    CBC_QRCoderMode* mode = NULL;
-    do {
-        if(bits.Available() < 4) {
-            mode = CBC_QRCoderMode::sTERMINATOR;
-        } else {
-            FX_INT32 iTemp1 = bits.ReadBits(4, e);
-            BC_EXCEPTION_CHECK_ReturnValue(e, NULL);
-            mode = CBC_QRCoderMode::ForBits(iTemp1, e);
-            BC_EXCEPTION_CHECK_ReturnValue(e, NULL);
-            if(mode == NULL) {
-                e = BCExceptionUnSupportMode;
-                BC_EXCEPTION_CHECK_ReturnValue(e, NULL);
-            }
-        }
-        if(!(mode == CBC_QRCoderMode::sTERMINATOR)) {
-            if(mode == CBC_QRCoderMode::sFNC1_FIRST_POSITION || mode == CBC_QRCoderMode::sFNC1_SECOND_POSITION) {
-                fc1Infact = TRUE;
-            } else if(mode == CBC_QRCoderMode::sSTRUCTURED_APPEND) {
-                bits.ReadBits(16, e);
-                BC_EXCEPTION_CHECK_ReturnValue(e, NULL);
-            } else if(mode == CBC_QRCoderMode::sECI) {
-                FX_INT32 value = ParseECIValue(&bits, e);
-                BC_EXCEPTION_CHECK_ReturnValue(e, NULL);
-                currentCharacterSetECI = CBC_CommonCharacterSetECI::GetCharacterSetECIByValue(value);
-            } else {
-                if(mode == CBC_QRCoderMode::sGBK) {
-                    bits.ReadBits(4, e);
-                    BC_EXCEPTION_CHECK_ReturnValue(e, NULL);
-                }
-                FX_INT32 numBits = mode->GetCharacterCountBits(version, e);
-                BC_EXCEPTION_CHECK_ReturnValue(e, NULL);
-                FX_INT32 count = bits.ReadBits(numBits, e);
-                BC_EXCEPTION_CHECK_ReturnValue(e, NULL);
-                if(mode == CBC_QRCoderMode::sNUMERIC) {
-                    DecodeNumericSegment(&bits, result, count, e);
-                    BC_EXCEPTION_CHECK_ReturnValue(e, NULL);
-                } else if(mode == CBC_QRCoderMode::sALPHANUMERIC) {
-                    DecodeAlphanumericSegment(&bits, result, count, fc1Infact, e);
-                    BC_EXCEPTION_CHECK_ReturnValue(e, NULL);
-                } else if(mode == CBC_QRCoderMode::sBYTE) {
-                    DecodeByteSegment(&bits, result, count, currentCharacterSetECI, &byteSegments, byteModeDecode, e);
-                    BC_EXCEPTION_CHECK_ReturnValue(e, NULL);
-                } else if(mode == CBC_QRCoderMode::sGBK) {
-                    DecodeGBKSegment(&bits, result, count, e);
-                    BC_EXCEPTION_CHECK_ReturnValue(e, NULL);
-                } else if(mode == CBC_QRCoderMode::sKANJI) {
-                    DecodeKanjiSegment(&bits, result, count, e);
-                    BC_EXCEPTION_CHECK_ReturnValue(e, NULL);
-                } else {
-                    e = BCExceptionUnSupportMode;
-                    BC_EXCEPTION_CHECK_ReturnValue(e, NULL);
-                }
-            }
-        }
-    } while (!(mode == CBC_QRCoderMode::sTERMINATOR));
-    CBC_CommonDecoderResult *tempCd = FX_NEW CBC_CommonDecoderResult();
-    tempCd->Init(*bytes, result, byteSegments, ecLevel, e);
-    BC_EXCEPTION_CHECK_ReturnValue(e, NULL);
-    return tempCd;
-}
-void CBC_QRDecodedBitStreamParser::DecodeGBKSegment(CBC_CommonBitSource* bits, CFX_ByteString &result, FX_INT32 count, FX_INT32 &e)
-{
-    CFX_ByteString buffer;
-    FX_INT32 offset = 0;
-    while (count > 0) {
-        FX_INT32 twoBytes = bits->ReadBits(13, e);
-        BC_EXCEPTION_CHECK_ReturnVoid(e);
-        FX_INT32 assembledTwoBytes = ((twoBytes / 0x060) << 8) | (twoBytes % 0x060);
-        if (assembledTwoBytes <= 0x0095d) {
-            assembledTwoBytes += 0x0a1a1;
-        } else {
-            assembledTwoBytes += 0x0a6a1;
-        }
-        buffer += (FX_BYTE) (assembledTwoBytes >> 8);
-        buffer += (FX_BYTE) assembledTwoBytes;
-        count--;
-    }
-    CBC_UtilCodingConvert::LocaleToUtf8(buffer, result);
-}
-void CBC_QRDecodedBitStreamParser::DecodeKanjiSegment(CBC_CommonBitSource* bits, CFX_ByteString &result, FX_INT32 count, FX_INT32 &e)
-{
-    CFX_ByteString buffer;
-    while (count > 0) {
-        FX_INT32 twoBytes = bits->ReadBits(13, e);
-        BC_EXCEPTION_CHECK_ReturnVoid(e);
-        FX_INT32 assembledTwoBytes = ((twoBytes / 0x0c0) << 8) | (twoBytes % 0x0c0);
-        if (assembledTwoBytes <= 0x01f00) {
-            assembledTwoBytes += 0x08140;
-        } else {
-            assembledTwoBytes += 0x0c140;
-        }
-        buffer += (FX_BYTE) (assembledTwoBytes >> 8);
-        buffer += (FX_BYTE) assembledTwoBytes;
-        count--;
-    }
-    CBC_UtilCodingConvert::LocaleToUtf8(buffer, result);
-}
-void CBC_QRDecodedBitStreamParser::DecodeByteSegment(CBC_CommonBitSource* bits, CFX_ByteString &result, FX_INT32 count,
-        CBC_CommonCharacterSetECI *currentCharacterSetECI,
-        CFX_Int32Array *byteSegments, FX_INT32 byteModeDecode, FX_INT32 &e)
-{
-    if(count < 0) {
-        e = BCExceptionNotFound;
-        BC_EXCEPTION_CHECK_ReturnVoid(e);
-    }
-    if((count << 3) > bits->Available()) {
-        e = BCExceptionRead;
-        BC_EXCEPTION_CHECK_ReturnVoid(e);
-    }
-    FX_BYTE *readBytes = FX_Alloc(FX_BYTE, count);
-    FXSYS_memset32(readBytes, 0x00, count);
-    for(FX_INT32 i = 0; i < count; i++) {
-        readBytes[i] = (FX_BYTE) bits->ReadBits(8, e);
-        BC_EXCEPTION_CHECK_ReturnVoid(e);
-    }
-    CFX_ByteString bs(readBytes, count);
-    result += bs;
-    FX_Free(readBytes);
-}
-void CBC_QRDecodedBitStreamParser::DecodeAlphanumericSegment(CBC_CommonBitSource* bits,
-        CFX_ByteString &result, FX_INT32 count, FX_BOOL fac1InEffect, FX_INT32 &e)
-{
-    FX_INT32 start = result.GetLength();
-    while(count > 1) {
-        FX_INT32 nextTwoCharsBits = bits->ReadBits(11, e);
-        BC_EXCEPTION_CHECK_ReturnVoid(e);
-        BC_FX_ByteString_Append(result, 1, ALPHANUMERIC_CHARS[nextTwoCharsBits / 45]);
-        BC_FX_ByteString_Append(result, 1, ALPHANUMERIC_CHARS[nextTwoCharsBits % 45]);
-        count -= 2;
-    }
-    if(count == 1) {
-        FX_INT32 itemp = bits->ReadBits(6, e);
-        BC_EXCEPTION_CHECK_ReturnVoid(e);
-        BC_FX_ByteString_Append(result,  1, ALPHANUMERIC_CHARS[itemp]);
-    }
-    if(fac1InEffect) {
-        for(FX_INT32 i = start; i < result.GetLength(); i++) {
-            if(result[i] == '%') {
-                if((i < result.GetLength() - 1) && result[i + 1] == '%') {
-                    result.Delete(i + 1, 1);
-                } else {
-                    result.SetAt(i, (FX_CHAR)0x1d);
-                }
-            }
-        }
-    }
-}
-void CBC_QRDecodedBitStreamParser::DecodeNumericSegment(CBC_CommonBitSource* bits, CFX_ByteString &result, FX_INT32 count, FX_INT32 &e)
-{
-    while(count >= 3) {
-        FX_INT32 threeDigitsBits = bits->ReadBits(10, e);
-        BC_EXCEPTION_CHECK_ReturnVoid(e);
-        if(threeDigitsBits >= 1000) {
-            e = BCExceptionRead;
-            BC_EXCEPTION_CHECK_ReturnVoid(e);
-        }
-        BC_FX_ByteString_Append(result, 1, ALPHANUMERIC_CHARS[threeDigitsBits / 100]);
-        BC_FX_ByteString_Append(result, 1, ALPHANUMERIC_CHARS[(threeDigitsBits / 10) % 10]);
-        BC_FX_ByteString_Append(result, 1, ALPHANUMERIC_CHARS[threeDigitsBits % 10]);
-        count -= 3;
-    }
-    if(count == 2) {
-        FX_INT32 twoDigitBits = bits->ReadBits(7, e);
-        BC_EXCEPTION_CHECK_ReturnVoid(e);
-        if(twoDigitBits >= 100) {
-            e = BCExceptionRead;
-            BC_EXCEPTION_CHECK_ReturnVoid(e);
-        }
-        BC_FX_ByteString_Append(result, 1, ALPHANUMERIC_CHARS[twoDigitBits / 10]);
-        BC_FX_ByteString_Append(result, 1, ALPHANUMERIC_CHARS[twoDigitBits % 10]);
-    } else if(count == 1) {
-        FX_INT32 digitBits = bits->ReadBits(4, e);
-        BC_EXCEPTION_CHECK_ReturnVoid(e);
-        if(digitBits >= 10) {
-            e = BCExceptionRead;
-            BC_EXCEPTION_CHECK_ReturnVoid(e);
-        }
-        BC_FX_ByteString_Append(result, 1, ALPHANUMERIC_CHARS[digitBits]);
-    }
-}
-const CFX_ByteString CBC_QRDecodedBitStreamParser::GuessEncoding(CFX_ByteArray *bytes)
-{
-    return *UTF_8;
-}
-FX_INT32 CBC_QRDecodedBitStreamParser::ParseECIValue(CBC_CommonBitSource* bits, FX_INT32 &e)
-{
-    FX_INT32 firstByte = bits->ReadBits(8, e);
-    BC_EXCEPTION_CHECK_ReturnValue(e, 0);
-    if((firstByte & 0x80) == 0) {
-        return firstByte & 0x7f;
-    } else if((firstByte & 0xc0) == 0x80) {
-        FX_INT32 secondByte = bits->ReadBits(8, e);
-        BC_EXCEPTION_CHECK_ReturnValue(e, 0);
-        return ((firstByte & 0x3f) << 8) | secondByte;
-    } else if((firstByte & 0xe0) == 0xc0) {
-        FX_INT32 secondThirdByte = bits->ReadBits(16, e);
-        BC_EXCEPTION_CHECK_ReturnValue(e, 0);
-        return ((firstByte & 0x1f) << 16) | secondThirdByte;
-    }
-    e = BCExceptionBadECI;
-    BC_EXCEPTION_CHECK_ReturnValue(e, 0);
-    return 0;
-}