Initial community commit

Src/replicant/nx/win/NXFileObject.h

@@ -0,0 +1,45 @@
+#pragma once
+#include "foundation/types.h"
+#include "foundation/error.h"
+#include "nx/nxuri.h"
+#include "nx/nxfile.h"
+#include "nu/nodelist.h"
+
+struct NXFileRegion : public queue_node_t
+{
+	uint64_t start;
+	uint64_t end;
+};
+
+class NXFileObject
+{
+public:
+	size_t Retain();
+	size_t Release();
+	ns_error_t LockRegion(uint64_t start, uint64_t end);
+	ns_error_t UnlockRegion();
+	ns_error_t Stat(nx_file_stat_t out_stats);
+	ns_error_t Length(uint64_t *length);
+
+	virtual ns_error_t Read(void *buffer, size_t bytes_requested, size_t *bytes_read)=0;
+	virtual ns_error_t Write(const void *buffer, size_t bytes)=0;
+	virtual ns_error_t PeekByte(uint8_t *byte)=0;
+	virtual ns_error_t Seek(uint64_t position)=0;
+	virtual ns_error_t Tell(uint64_t *position)=0;
+	virtual ns_error_t Sync()=0;
+	virtual ns_error_t Truncate()=0;
+	
+	virtual ns_error_t EndOfFile();
+
+protected:
+	NXFileObject();
+	virtual ~NXFileObject();
+
+	nx_file_stat_s file_stats;
+	uint64_t position; /* note: this represents absolute position, _not_ position within the region */
+	ns_error_t Initialize(nx_uri_t uri);
+	NXFileRegion region;
+	nodelist_s region_stack;
+	nx_uri_t uri;
+	volatile size_t reference_count;
+};