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Unified Diff: xfa/fxbarcode/pdf417/BC_PDF417ScanningDecoder.cpp

Issue 2031873003: Get rid of NULLs in xfa/ (Closed) Base URL: https://pdfium.googlesource.com/pdfium@nullptr_fpdfsdk
Patch Set: Created 4 years, 6 months ago
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Index: xfa/fxbarcode/pdf417/BC_PDF417ScanningDecoder.cpp
diff --git a/xfa/fxbarcode/pdf417/BC_PDF417ScanningDecoder.cpp b/xfa/fxbarcode/pdf417/BC_PDF417ScanningDecoder.cpp
index 4e1d8dd1e9ceaaaa4555433dacada067d78473c4..a6e882b1cb14b0f0c58f070b3a4fda41a7ceed0a 100644
--- a/xfa/fxbarcode/pdf417/BC_PDF417ScanningDecoder.cpp
+++ b/xfa/fxbarcode/pdf417/BC_PDF417ScanningDecoder.cpp
@@ -46,7 +46,8 @@
int32_t CBC_PDF417ScanningDecoder::CODEWORD_SKEW_SIZE = 2;
int32_t CBC_PDF417ScanningDecoder::MAX_ERRORS = 3;
int32_t CBC_PDF417ScanningDecoder::MAX_EC_CODEWORDS = 512;
-CBC_PDF417ECErrorCorrection* CBC_PDF417ScanningDecoder::errorCorrection = NULL;
+CBC_PDF417ECErrorCorrection* CBC_PDF417ScanningDecoder::errorCorrection =
+ nullptr;
CBC_PDF417ScanningDecoder::CBC_PDF417ScanningDecoder() {}
CBC_PDF417ScanningDecoder::~CBC_PDF417ScanningDecoder() {}
@@ -67,10 +68,10 @@ CBC_CommonDecoderResult* CBC_PDF417ScanningDecoder::decode(
int32_t& e) {
CBC_BoundingBox* boundingBox = new CBC_BoundingBox(
image, imageTopLeft, imageBottomLeft, imageTopRight, imageBottomRight, e);
- BC_EXCEPTION_CHECK_ReturnValue(e, NULL);
- CBC_DetectionResultRowIndicatorColumn* leftRowIndicatorColumn = NULL;
- CBC_DetectionResultRowIndicatorColumn* rightRowIndicatorColumn = NULL;
- CBC_DetectionResult* detectionResult = NULL;
+ BC_EXCEPTION_CHECK_ReturnValue(e, nullptr);
+ CBC_DetectionResultRowIndicatorColumn* leftRowIndicatorColumn = nullptr;
+ CBC_DetectionResultRowIndicatorColumn* rightRowIndicatorColumn = nullptr;
+ CBC_DetectionResult* detectionResult = nullptr;
for (int32_t i = 0; i < 2; i++) {
if (imageTopLeft) {
leftRowIndicatorColumn =
@@ -88,7 +89,7 @@ CBC_CommonDecoderResult* CBC_PDF417ScanningDecoder::decode(
delete leftRowIndicatorColumn;
delete rightRowIndicatorColumn;
delete boundingBox;
- return NULL;
+ return nullptr;
}
if (i == 0 && (detectionResult->getBoundingBox()->getMinY() <
boundingBox->getMinY() ||
@@ -105,7 +106,7 @@ CBC_CommonDecoderResult* CBC_PDF417ScanningDecoder::decode(
detectionResult->setDetectionResultColumn(0, leftRowIndicatorColumn);
detectionResult->setDetectionResultColumn(maxBarcodeColumn,
rightRowIndicatorColumn);
- FX_BOOL leftToRight = leftRowIndicatorColumn != NULL;
+ FX_BOOL leftToRight = !!leftRowIndicatorColumn;
for (int32_t barcodeColumnCount = 1; barcodeColumnCount <= maxBarcodeColumn;
barcodeColumnCount++) {
int32_t barcodeColumn = leftToRight ? barcodeColumnCount
@@ -113,7 +114,7 @@ CBC_CommonDecoderResult* CBC_PDF417ScanningDecoder::decode(
if (detectionResult->getDetectionResultColumn(barcodeColumn)) {
continue;
}
- CBC_DetectionResultColumn* detectionResultColumn = NULL;
+ CBC_DetectionResultColumn* detectionResultColumn = nullptr;
if (barcodeColumn == 0 || barcodeColumn == maxBarcodeColumn) {
detectionResultColumn = new CBC_DetectionResultRowIndicatorColumn(
boundingBox, barcodeColumn == 0);
@@ -153,7 +154,7 @@ CBC_CommonDecoderResult* CBC_PDF417ScanningDecoder::decode(
createDecoderResult(detectionResult, e);
if (e != BCExceptionNO) {
delete detectionResult;
- return NULL;
+ return nullptr;
}
return decoderresult;
}
@@ -181,33 +182,33 @@ CBC_DetectionResult* CBC_PDF417ScanningDecoder::merge(
CBC_DetectionResultRowIndicatorColumn* leftRowIndicatorColumn,
CBC_DetectionResultRowIndicatorColumn* rightRowIndicatorColumn,
int32_t& e) {
- if (leftRowIndicatorColumn == NULL && rightRowIndicatorColumn == NULL) {
+ if (!leftRowIndicatorColumn && !rightRowIndicatorColumn) {
e = BCExceptionIllegalArgument;
- return NULL;
+ return nullptr;
}
CBC_BarcodeMetadata* barcodeMetadata =
getBarcodeMetadata(leftRowIndicatorColumn, rightRowIndicatorColumn);
- if (barcodeMetadata == NULL) {
+ if (!barcodeMetadata) {
e = BCExceptionCannotMetadata;
- return NULL;
+ return nullptr;
}
CBC_BoundingBox* leftboundingBox =
adjustBoundingBox(leftRowIndicatorColumn, e);
if (e != BCExceptionNO) {
delete barcodeMetadata;
- return NULL;
+ return nullptr;
}
CBC_BoundingBox* rightboundingBox =
adjustBoundingBox(rightRowIndicatorColumn, e);
if (e != BCExceptionNO) {
delete barcodeMetadata;
- return NULL;
+ return nullptr;
}
CBC_BoundingBox* boundingBox =
CBC_BoundingBox::merge(leftboundingBox, rightboundingBox, e);
if (e != BCExceptionNO) {
delete barcodeMetadata;
- return NULL;
+ return nullptr;
}
CBC_DetectionResult* detectionresult =
new CBC_DetectionResult(barcodeMetadata, boundingBox);
@@ -216,11 +217,11 @@ CBC_DetectionResult* CBC_PDF417ScanningDecoder::merge(
CBC_BoundingBox* CBC_PDF417ScanningDecoder::adjustBoundingBox(
CBC_DetectionResultRowIndicatorColumn* rowIndicatorColumn,
int32_t& e) {
- if (rowIndicatorColumn == NULL) {
- return NULL;
- }
+ if (!rowIndicatorColumn)
+ return nullptr;
+
CFX_Int32Array* rowHeights = rowIndicatorColumn->getRowHeights(e);
- BC_EXCEPTION_CHECK_ReturnValue(e, NULL);
+ BC_EXCEPTION_CHECK_ReturnValue(e, nullptr);
int32_t maxRowHeight = getMax(*rowHeights);
int32_t missingStartRows = 0;
for (int32_t i = 0; i < rowHeights->GetSize(); i++) {
@@ -232,8 +233,7 @@ CBC_BoundingBox* CBC_PDF417ScanningDecoder::adjustBoundingBox(
}
CFX_ArrayTemplate<CBC_Codeword*>* codewords =
rowIndicatorColumn->getCodewords();
- for (int32_t row = 0; missingStartRows > 0 && codewords->GetAt(row) == NULL;
- row++) {
+ for (int32_t row = 0; missingStartRows > 0 && !codewords->GetAt(row); row++) {
missingStartRows--;
}
int32_t missingEndRows = 0;
@@ -244,13 +244,13 @@ CBC_BoundingBox* CBC_PDF417ScanningDecoder::adjustBoundingBox(
}
}
for (int32_t row2 = codewords->GetSize() - 1;
- missingEndRows > 0 && codewords->GetAt(row2) == NULL; row2--) {
+ missingEndRows > 0 && !codewords->GetAt(row2); row2--) {
missingEndRows--;
}
CBC_BoundingBox* boundingBox =
rowIndicatorColumn->getBoundingBox()->addMissingRows(
missingStartRows, missingEndRows, rowIndicatorColumn->isLeft(), e);
- BC_EXCEPTION_CHECK_ReturnValue(e, NULL);
+ BC_EXCEPTION_CHECK_ReturnValue(e, nullptr);
return boundingBox;
}
int32_t CBC_PDF417ScanningDecoder::getMax(CFX_Int32Array& values) {
@@ -264,22 +264,23 @@ int32_t CBC_PDF417ScanningDecoder::getMax(CFX_Int32Array& values) {
CBC_BarcodeMetadata* CBC_PDF417ScanningDecoder::getBarcodeMetadata(
CBC_DetectionResultRowIndicatorColumn* leftRowIndicatorColumn,
CBC_DetectionResultRowIndicatorColumn* rightRowIndicatorColumn) {
- CBC_BarcodeMetadata* leftBarcodeMetadata = NULL;
- CBC_BarcodeMetadata* rightBarcodeMetadata = NULL;
- if (leftRowIndicatorColumn == NULL ||
- (leftBarcodeMetadata = leftRowIndicatorColumn->getBarcodeMetadata()) ==
- NULL) {
- return rightRowIndicatorColumn == NULL
- ? NULL
- : rightRowIndicatorColumn->getBarcodeMetadata();
- }
- if (rightRowIndicatorColumn == NULL ||
- (rightBarcodeMetadata = rightRowIndicatorColumn->getBarcodeMetadata()) ==
- NULL) {
- return leftRowIndicatorColumn == NULL
- ? NULL
- : leftRowIndicatorColumn->getBarcodeMetadata();
+ CBC_BarcodeMetadata* leftBarcodeMetadata =
+ leftRowIndicatorColumn ? leftRowIndicatorColumn->getBarcodeMetadata()
+ : nullptr;
+ if (!leftBarcodeMetadata) {
+ return rightRowIndicatorColumn
+ ? rightRowIndicatorColumn->getBarcodeMetadata()
+ : nullptr;
+ }
+
+ CBC_BarcodeMetadata* rightBarcodeMetadata =
+ rightRowIndicatorColumn ? rightRowIndicatorColumn->getBarcodeMetadata()
+ : nullptr;
+ if (!rightBarcodeMetadata) {
+ return leftRowIndicatorColumn ? leftRowIndicatorColumn->getBarcodeMetadata()
+ : nullptr;
}
+
if (leftBarcodeMetadata->getColumnCount() !=
rightBarcodeMetadata->getColumnCount() &&
leftBarcodeMetadata->getErrorCorrectionLevel() !=
@@ -288,7 +289,7 @@ CBC_BarcodeMetadata* CBC_PDF417ScanningDecoder::getBarcodeMetadata(
rightBarcodeMetadata->getRowCount()) {
delete leftBarcodeMetadata;
delete rightBarcodeMetadata;
- return NULL;
+ return nullptr;
}
delete rightBarcodeMetadata;
return leftBarcodeMetadata;
@@ -446,7 +447,7 @@ CBC_PDF417ScanningDecoder::createDecoderResultFromAmbiguousValues(
}
}
e = BCExceptionChecksumInstance;
- return NULL;
+ return nullptr;
}
CBC_BarcodeValueArrayArray* CBC_PDF417ScanningDecoder::createBarcodeMatrix(
CBC_DetectionResult* detectionResult) {
@@ -466,16 +467,16 @@ CBC_BarcodeValueArrayArray* CBC_PDF417ScanningDecoder::createBarcodeMatrix(
CBC_DetectionResultColumn* detectionResultColumn =
(CBC_DetectionResultColumn*)detectionResult->getDetectionResultColumns()
.GetAt(i);
- if (detectionResultColumn == NULL) {
+ if (!detectionResultColumn)
continue;
- }
+
CFX_ArrayTemplate<CBC_Codeword*>* temp =
detectionResultColumn->getCodewords();
for (int32_t l = 0; l < temp->GetSize(); l++) {
CBC_Codeword* codeword = temp->GetAt(l);
- if (codeword == NULL || codeword->getRowNumber() == -1) {
+ if (!codeword || codeword->getRowNumber() == -1)
continue;
- }
+
barcodeMatrix->GetAt(codeword->getRowNumber())
->GetAt(i)
->setValue(codeword->getValue());
@@ -495,7 +496,7 @@ int32_t CBC_PDF417ScanningDecoder::getStartColumn(
int32_t imageRow,
FX_BOOL leftToRight) {
int32_t offset = leftToRight ? 1 : -1;
- CBC_Codeword* codeword = NULL;
+ CBC_Codeword* codeword = nullptr;
if (isValidBarcodeColumn(detectionResult, barcodeColumn - offset)) {
codeword = detectionResult->getDetectionResultColumn(barcodeColumn - offset)
->getCodeword(imageRow);
@@ -553,9 +554,9 @@ CBC_Codeword* CBC_PDF417ScanningDecoder::detectCodeword(
leftToRight, startColumn, imageRow);
CFX_Int32Array* moduleBitCount = getModuleBitCount(
image, minColumn, maxColumn, leftToRight, startColumn, imageRow);
- if (moduleBitCount == NULL) {
- return NULL;
- }
+ if (!moduleBitCount)
+ return nullptr;
+
int32_t endColumn;
int32_t codewordBitCount = CBC_PDF417Common::getBitCountSum(*moduleBitCount);
if (leftToRight) {
@@ -575,7 +576,7 @@ CBC_Codeword* CBC_PDF417ScanningDecoder::detectCodeword(
int32_t codeword = CBC_PDF417Common::getCodeword(decodedValue);
delete moduleBitCount;
if (codeword == -1) {
- return NULL;
+ return nullptr;
}
return new CBC_Codeword(startColumn, endColumn,
getCodewordBucketNumber(decodedValue), codeword);
@@ -612,7 +613,7 @@ CFX_Int32Array* CBC_PDF417ScanningDecoder::getModuleBitCount(
return moduleBitCount;
}
delete moduleBitCount;
- return NULL;
+ return nullptr;
}
int32_t CBC_PDF417ScanningDecoder::getNumberOfECCodeWords(
int32_t barcodeECLevel) {
@@ -655,17 +656,17 @@ CBC_CommonDecoderResult* CBC_PDF417ScanningDecoder::decodeCodewords(
int32_t& e) {
if (codewords.GetSize() == 0) {
e = BCExceptionFormatInstance;
- return NULL;
+ return nullptr;
}
int32_t numECCodewords = 1 << (ecLevel + 1);
correctErrors(codewords, erasures, numECCodewords, e);
- BC_EXCEPTION_CHECK_ReturnValue(e, NULL);
+ BC_EXCEPTION_CHECK_ReturnValue(e, nullptr);
verifyCodewordCount(codewords, numECCodewords, e);
- BC_EXCEPTION_CHECK_ReturnValue(e, NULL);
+ BC_EXCEPTION_CHECK_ReturnValue(e, nullptr);
CFX_ByteString bytestring;
CBC_CommonDecoderResult* decoderResult = CBC_DecodedBitStreamPaser::decode(
codewords, bytestring.FormatInteger(ecLevel), e);
- BC_EXCEPTION_CHECK_ReturnValue(e, NULL);
+ BC_EXCEPTION_CHECK_ReturnValue(e, nullptr);
return decoderResult;
}
int32_t CBC_PDF417ScanningDecoder::correctErrors(CFX_Int32Array& codewords,
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