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#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;
};
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