ut_FileStream

thanks ogws

src/nw4r/ut/ut_FileStream.cpp

@@ -0,0 +1,58 @@
+#include <nw4r/ut.h>
+
+namespace nw4r {
+namespace ut {
+
+NW4R_UT_RTTI_DEF_DERIVED(FileStream, IOStream);
+
+void FileStream::Cancel() {}
+
+bool FileStream::CancelAsync(AsyncCallback callback, void *arg) {
+#pragma unused(callback)
+#pragma unused(arg)
+    return true;
+}
+
+u32 FileStream::FilePosition::Skip(long offset) {
+    if (offset != 0) {
+        s64 newOffset = mFileOffset + offset;
+        mFileOffset = Clamp<s64>(newOffset, 0, mFileSize);
+    }
+
+    return mFileOffset;
+}
+
+u32 FileStream::FilePosition::Append(long offset) {
+    s64 newOffset = mFileOffset + offset;
+
+    if (newOffset < 0) {
+        mFileOffset = 0;
+    } else {
+        mFileOffset = newOffset;
+        mFileSize = Max(mFileOffset, mFileSize);
+    }
+
+    return mFileOffset;
+}
+
+void FileStream::FilePosition::Seek(long offset, unsigned long origin) {
+    switch (origin) {
+    case SEEK_BEG:
+        mFileOffset = 0;
+        break;
+    case SEEK_END:
+        mFileOffset = mFileSize;
+        break;
+    case SEEK_CUR:
+    default:
+        break;
+    }
+
+    Skip(offset);
+}
+
+// TODO: This should not be necessary. Because of nw4r::snd? still the case for ss
+DECOMP_FORCEACTIVE(ut_FileStream_cpp, FileStream::GetRuntimeTypeInfo);
+
+} // namespace ut
+} // namespace nw4r