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QCborStreamReader: move helper function to the only place it's used

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Simplifies the code a little bit

Pick-to: 5.15 6.0
Change-Id: I7b9b97ae9b32412abdc6fffd164545632be4590a
Reviewed-by: Allan Sandfeld Jensen <allan.jensen@qt.io>
This commit is contained in:
Thiago Macieira 2020-11-07 08:05:34 -08:00
parent fa0dc83135
commit 2bed336599
1 changed files with 17 additions and 25 deletions
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42
src/corelib/serialization/qcborstreamreader.cpp
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@ -647,27 +647,6 @@ public:
lastError = QCborError { QCborError::Code(int(err)) };
}
void updateBufferAfterString(qsizetype offset, qsizetype size)
{
Q_ASSERT(device);
bufferStart += offset;
qsizetype newStart = bufferStart + size;
qsizetype remainingInBuffer = buffer.size() - newStart;
if (remainingInBuffer <= 0) {
// We've read from the QIODevice more than what was in the buffer.
buffer.truncate(0);
} else {
// There's still data buffered, but we need to move it around.
char *ptr = buffer.data();
memmove(ptr, ptr + newStart, remainingInBuffer);
buffer.truncate(remainingInBuffer);
}
bufferStart = 0;
}
struct ReadStringChunk {
union {
char *ptr;
@ -1558,10 +1537,23 @@ QCborStreamReaderPrivate::readStringChunk(ReadStringChunk params)
if (result.data < 0)
return result; // error
if (device)
updateBufferAfterString(0, len);
else
bufferStart += len;
// adjust the buffers after we're done reading the string
bufferStart += len;
if (device) {
qsizetype remainingInBuffer = buffer.size() - bufferStart;
if (remainingInBuffer <= 0) {
// We've read from the QIODevice more than what was in the buffer.
buffer.truncate(0);
} else {
// There's still data buffered, but we need to move it around.
char *ptr = buffer.data();
memmove(ptr, ptr + bufferStart, remainingInBuffer);
buffer.truncate(remainingInBuffer);
}
bufferStart = 0;
}
preread();
result.status = QCborStreamReader::Ok;