From 83e3c364e6403883cd60e7dda10165b6e84269f3 Mon Sep 17 00:00:00 2001
From: Stefan Boberg <stefan@boberg.org>
Date: Fri, 21 May 2021 20:40:09 +0200
Subject: Moved CasBlobFile into basicfile.h

---
 zenstore/basicfile.cpp | 85 ++++++++++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 85 insertions(+)
 create mode 100644 zenstore/basicfile.cpp

(limited to 'zenstore/basicfile.cpp')

diff --git a/zenstore/basicfile.cpp b/zenstore/basicfile.cpp
new file mode 100644
index 000000000..961e43735
--- /dev/null
+++ b/zenstore/basicfile.cpp
@@ -0,0 +1,85 @@
+#include "zenstore/basicfile.h"
+
+#include <zencore/filesystem.h>
+#include <zencore/fmtutils.h>
+
+#include <fmt/format.h>
+#include <gsl/gsl-lite.hpp>
+
+namespace zen {
+
+using namespace fmt::literals;
+
+void
+CasBlobFile::Open(std::filesystem::path FileName, bool isCreate)
+{
+	const DWORD dwCreationDisposition = isCreate ? CREATE_ALWAYS : OPEN_EXISTING;
+
+	HRESULT hRes = m_File.Create(FileName.c_str(), GENERIC_READ | GENERIC_WRITE, FILE_SHARE_READ, dwCreationDisposition);
+
+	if (FAILED(hRes))
+	{
+		throw std::system_error(GetLastError(), std::system_category(), "Failed to open bucket sobs file '{}'"_format(FileName));
+	}
+}
+
+void
+CasBlobFile::Read(void* Data, uint64_t Size, uint64_t Offset)
+{
+	OVERLAPPED Ovl{};
+
+	Ovl.Offset	   = DWORD(Offset & 0xffff'ffffu);
+	Ovl.OffsetHigh = DWORD(Offset >> 32);
+
+	HRESULT hRes = m_File.Read(Data, gsl::narrow<DWORD>(Size), &Ovl);
+
+	if (FAILED(hRes))
+	{
+		throw std::system_error(GetLastError(),
+								std::system_category(),
+								"Failed to read from file '{}'"_format(zen::PathFromHandle(m_File)));
+	}
+}
+
+IoBuffer
+CasBlobFile::ReadAll()
+{
+	IoBuffer Buffer(FileSize());
+
+	Read((void*)Buffer.Data(), Buffer.Size(), 0);
+
+	return Buffer;
+}
+
+void
+CasBlobFile::Write(const void* Data, uint64_t Size, uint64_t Offset)
+{
+	OVERLAPPED Ovl{};
+
+	Ovl.Offset	   = DWORD(Offset & 0xffff'ffffu);
+	Ovl.OffsetHigh = DWORD(Offset >> 32);
+
+	HRESULT hRes = m_File.Write(Data, gsl::narrow<DWORD>(Size), &Ovl);
+
+	if (FAILED(hRes))
+	{
+		throw std::system_error(GetLastError(), std::system_category(), "Failed to write to file '{}'"_format(zen::PathFromHandle(m_File)));
+	}
+}
+
+void
+CasBlobFile::Flush()
+{
+	m_File.Flush();
+}
+
+uint64_t
+CasBlobFile::FileSize()
+{
+	ULONGLONG Sz;
+	m_File.GetSize(Sz);
+
+	return uint64_t(Sz);
+}
+
+}
-- 
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