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#include "FileStream.h"
#include "../db/assert.h"
#include "inlines.h"
namespace nw4hbm {
namespace ut {
NW4HBM_UT_GET_DERIVED_RUNTIME_TYPEINFO(FileStream, IOStream);
void FileStream::Seek(s32 offset, u32 origin) {
NW4R_DB_ASSERTMSG(44, CanSeek(), "Stream don't support SEEK function\n");
}
void FileStream::Cancel() {
NW4R_DB_ASSERTMSG(60, CanCancel(), "Stream don't support CANCEL function\n");
}
bool FileStream::CancelAsync(IOStreamCallback pCallback, void* pCallbackArg) {
#pragma unused(pCallback)
#pragma unused(pCallbackArg)
NW4R_DB_ASSERTMSG(78, CanCancel(), "Stream don't support CANCEL function\n");
NW4R_DB_ASSERTMSG(79, CanAsync(), "Stream don't support ASYNC function\n");
return true;
}
u32 FileStream::FilePosition::Skip(s32 offset) {
if (offset != 0) {
s64 newOffset = mPosition + offset;
mPosition = Clamp<s64>(newOffset, 0, mFileSize);
}
return mPosition;
}
u32 FileStream::FilePosition::Append(s32 offset) {
s64 newOffset = mPosition + offset;
if (newOffset < 0) {
mPosition = 0;
} else {
mPosition = newOffset;
mFileSize = Max(mPosition, mFileSize);
}
return mPosition;
}
void FileStream::FilePosition::Seek(s32 offset, u32 origin) {
switch (origin) {
case SEEK_BEG: {
mPosition = 0;
break;
}
case SEEK_END: {
mPosition = mFileSize;
break;
}
case SEEK_CUR:
default: {
break;
}
}
Skip(offset);
}
} // namespace ut
} // namespace nw4hbm
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