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#include "recordFile-processor.h"
#include "../util/record-format.h"
#include "parameter-decoder.h"
namespace SlangRecord
{
RecordFileProcessor::RecordFileProcessor(const Slang::String& filePath)
{
Slang::FileMode fileMode = Slang::FileMode::Open;
Slang::FileAccess fileAccess = Slang::FileAccess::Read;
Slang::FileShare fileShare = Slang::FileShare::None;
// Open the record file with read-only access
SlangResult res = m_inputStream.init(filePath, fileMode, fileAccess, fileShare);
if (res != SLANG_OK)
{
SlangRecord::slangRecordLog(
SlangRecord::LogLevel::Error,
"Failed to open file %s\n",
filePath.begin());
std::abort();
}
// Enable log system
setLogLevel();
}
bool RecordFileProcessor::processNextBlock()
{
FunctionHeader header{};
if (!processHeader(header))
{
return false;
}
ApiClassId classId = static_cast<ApiClassId>(getClassId(header.callId));
// capacity comparison will be performed in the reserve call, so we can safely call reserve
m_parameterBuffer.reserve(header.dataSizeInBytes);
size_t readBytes = 0;
SlangResult res = SLANG_OK;
if (header.dataSizeInBytes)
{
res = m_inputStream.read(m_parameterBuffer.getBuffer(), header.dataSizeInBytes, readBytes);
}
if (res != SLANG_OK || readBytes != header.dataSizeInBytes)
{
return false;
}
FunctionTailer tailer{};
if (processTailer(tailer) == ERROR_BLOCK)
{
return false;
}
if (tailer.dataSizeInBytes)
{
m_outputBuffer.reserve(tailer.dataSizeInBytes);
res = m_inputStream.read(m_outputBuffer.getBuffer(), tailer.dataSizeInBytes, readBytes);
if (res != SLANG_OK || readBytes != tailer.dataSizeInBytes)
{
return false;
}
}
bool ret = false;
SlangDecoder::ParameterBlock paramBlock{};
paramBlock.parameterBuffer = m_parameterBuffer.getBuffer();
paramBlock.parameterBufferSize = header.dataSizeInBytes;
paramBlock.outputBuffer = m_outputBuffer.getBuffer();
paramBlock.outputBufferSize = tailer.dataSizeInBytes;
if (classId == ApiClassId::GlobalFunction)
{
ret = m_decoder->processFunctionCall(header, paramBlock);
}
else
{
ret = m_decoder->processMethodCall(header, paramBlock);
}
m_parameterBuffer.clear();
m_outputBuffer.clear();
return ret;
}
bool RecordFileProcessor::processHeader(FunctionHeader& header)
{
size_t readBytes = 0;
SlangResult res = m_inputStream.read(&header, sizeof(FunctionHeader), readBytes);
if (res != SLANG_OK || readBytes != sizeof(FunctionHeader))
{
return false;
}
if (header.magic != MAGIC_HEADER || header.callId == ApiCallId::InvalidCallId)
{
return false;
}
return true;
}
RecordFileResultCode RecordFileProcessor::processTailer(FunctionTailer& tailer)
{
size_t readBytes = 0;
SlangResult res = m_inputStream.read(&tailer, sizeof(FunctionTailer), readBytes);
if (res != SLANG_OK || readBytes != sizeof(FunctionTailer))
{
return ERROR_BLOCK;
}
// If we don't read a valid tailer, but the magic is bit is a header, it indicates that
// there is no tailer for this block, but it's still a valid block.
if (tailer.magic == MAGIC_HEADER)
{
// revert back to last read position, and clear tailer
int64_t offset = -(int64_t)sizeof(FunctionTailer);
m_inputStream.seek(Slang::SeekOrigin::Current, offset);
memset(&tailer, 0, sizeof(FunctionTailer));
return NOT_EXSIT;
}
if (tailer.magic != MAGIC_TAILER)
{
return ERROR_BLOCK;
}
return RESULT_OK;
}
bool RecordFileProcessor::processMethod(
FunctionHeader const& header,
const uint8_t* parameterBuffer,
int64_t bufferSize)
{
return false;
}
bool RecordFileProcessor::processFunction(
FunctionHeader const& header,
const uint8_t* parameterBuffer,
int64_t bufferSize)
{
return false;
}
}; // namespace SlangRecord
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