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