51 lines
1.5 KiB
C++
51 lines
1.5 KiB
C++
#include "WideStringWrapper.h"
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#include "HAL/UnrealMemory.h"
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RiderDebuggerSupport::FWideStringWrapper::FWideStringWrapper(char* Buf, uint32 BufLen):
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AllocatedBuffer(Buf),
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AllocatedBufferLength(BufLen)
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{
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if (AllocatedBuffer != nullptr && AllocatedBufferLength > LengthPrefixSize)
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{
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WideStringLength = reinterpret_cast<uint32*>(AllocatedBuffer);
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*WideStringLength = 0;
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PointerToString = reinterpret_cast<wchar_t*>(AllocatedBuffer + LengthPrefixSize);
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AvailableStringSpaceInBytes = AllocatedBufferLength - LengthPrefixSize;
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}
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else
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{
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WideStringLength = nullptr;
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PointerToString = nullptr;
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AvailableStringSpaceInBytes = 0;
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}
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}
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uint32 RiderDebuggerSupport::FWideStringWrapper::CopyFromNullTerminatedStr(const wchar_t* SourceStr, uint32 SourceStrLength) const
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{
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if (nullptr == SourceStr || 0 == SourceStrLength) return 0;
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if (PointerToString == nullptr || AllocatedBufferLength <= LengthPrefixSize) return 0;
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uint32 LocalDataLength = SourceStrLength;
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while (LocalDataLength > 0 && SourceStr[LocalDataLength - 1] == L'\0')
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{
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--LocalDataLength;
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}
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uint32 BytesToCopy = LocalDataLength * sizeof(wchar_t);
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if (BytesToCopy > AvailableStringSpaceInBytes)
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{
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BytesToCopy = AvailableStringSpaceInBytes;
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LocalDataLength = BytesToCopy / sizeof(wchar_t);
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}
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*WideStringLength = LocalDataLength;
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FMemory::Memcpy(PointerToString, SourceStr, BytesToCopy);
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return LocalDataLength;
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}
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