45 lines
1.1 KiB
C
45 lines
1.1 KiB
C
|
#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;
|
||
|
|
};
|