41 lines
691 B
Go
41 lines
691 B
Go
package db0202
|
|
|
|
import (
|
|
"io"
|
|
"os"
|
|
)
|
|
|
|
type Log struct {
|
|
FileName string
|
|
fp *os.File
|
|
}
|
|
|
|
func (log *Log) Open() (err error) {
|
|
log.fp, err = createFileSync(log.FileName)
|
|
return err
|
|
}
|
|
|
|
func (log *Log) Close() error {
|
|
return log.fp.Close()
|
|
}
|
|
|
|
func (log *Log) Write(ent *Entry) error {
|
|
if _, err := log.fp.Write(ent.Encode()); err != nil {
|
|
return err
|
|
}
|
|
return log.fp.Sync() // fsync
|
|
}
|
|
|
|
func (log *Log) Read(ent *Entry) (eof bool, err error) {
|
|
err = ent.Decode(log.fp)
|
|
if err == io.EOF || err == io.ErrUnexpectedEOF || err == ErrBadSum {
|
|
return true, nil
|
|
} else if err != nil {
|
|
return false, err
|
|
} else {
|
|
return false, nil
|
|
}
|
|
}
|
|
|
|
// QzBQWVJJOUhU https://trialofcode.org/
|