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diskblockpos.go
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diskblockpos.go
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package block
import (
"fmt"
"io"
"github.com/copernet/copernicus/util"
)
type DiskBlockPos struct {
File int32
Pos uint32
}
type DiskTxPos struct {
BlockIn *DiskBlockPos
TxOffsetIn uint32
}
func (dbp *DiskBlockPos) Serialize(writer io.Writer) error {
return util.WriteElements(writer, &dbp.File, &dbp.Pos)
}
func (dtp *DiskTxPos) Serialize(writer io.Writer) error {
err := dtp.BlockIn.Serialize(writer)
if err != nil {
return err
}
return util.WriteElements(writer, dtp.TxOffsetIn)
}
func (dbp *DiskBlockPos) Unserialize(reader io.Reader) error {
return util.ReadElements(reader, &dbp.File, &dbp.Pos)
}
func (dtp *DiskTxPos) Unserialize(reader io.Reader) error {
dbp := new(DiskBlockPos)
err := dbp.Unserialize(reader)
if err != nil {
return err
}
dtp.BlockIn = dbp
return util.ReadElements(reader, &dtp.TxOffsetIn)
}
func (dbp *DiskBlockPos) SetNull() {
dbp.File = -1
dbp.Pos = 0
}
func (dbp *DiskBlockPos) Equal(other *DiskBlockPos) bool {
return dbp.Pos == other.Pos && dbp.File == other.File
}
func (dbp *DiskBlockPos) IsNull() bool {
return dbp.File == -1
}
func (dbp *DiskBlockPos) String() string {
return fmt.Sprintf("BlcokDiskPos(File=%d, Pos=%d)", dbp.File, dbp.Pos)
}
func NewDiskBlockPos(file int32, pos uint32) *DiskBlockPos {
diskBlockPos := DiskBlockPos{File: file, Pos: pos}
return &diskBlockPos
}
func NewDiskBlkPos() DiskBlockPos {
var dbp DiskBlockPos
dbp.SetNull()
return dbp
}
func NewDiskTxPos(blockIn *DiskBlockPos, offsetIn uint32) *DiskTxPos {
diskTxPos := &DiskTxPos{
BlockIn: blockIn,
TxOffsetIn: offsetIn,
}
return diskTxPos
}