chore: initial commit (extracted from Launchers monorepo)

Plugin: ns7zip v2.0.0 Architectures: x86-ansi, x86-unicode, amd64-unicode License: LGPL-2.1-or-later
2026-04-29 14:07:51 +02:00
commit d074cc7c07
3848 changed files with 1076682 additions and 0 deletions
@@ -0,0 +1,37 @@
+// OffsetStream.cpp
+
+#include "StdAfx.h"
+
+#include "OffsetStream.h"
+
+HRESULT COffsetOutStream::Init(IOutStream *stream, UInt64 offset)
+{
+  _offset = offset;
+  _stream = stream;
+  return _stream->Seek((Int64)offset, STREAM_SEEK_SET, NULL);
+}
+
+Z7_COM7F_IMF(COffsetOutStream::Write(const void *data, UInt32 size, UInt32 *processedSize))
+{
+  return _stream->Write(data, size, processedSize);
+}
+
+Z7_COM7F_IMF(COffsetOutStream::Seek(Int64 offset, UInt32 seekOrigin, UInt64 *newPosition))
+{
+  if (seekOrigin == STREAM_SEEK_SET)
+  {
+    if (offset < 0)
+      return HRESULT_WIN32_ERROR_NEGATIVE_SEEK;
+    offset += _offset;
+  }
+  UInt64 absoluteNewPosition = 0; // =0 for gcc-10
+  const HRESULT result = _stream->Seek(offset, seekOrigin, &absoluteNewPosition);
+  if (newPosition)
+    *newPosition = absoluteNewPosition - _offset;
+  return result;
+}
+
+Z7_COM7F_IMF(COffsetOutStream::SetSize(UInt64 newSize))
+{
+  return _stream->SetSize(_offset + newSize);
+}