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/* SPDX-License-Identifier: MIT
*
* Copyright (C) 2019-2022 WireGuard LLC. All Rights Reserved.
*/
package ringlogger
import (
"errors"
"fmt"
"io"
"os"
"time"
"golang.org/x/sys/windows"
)
func DumpTo(inPath string, out io.Writer, continuous bool) error {
file, err := os.Open(inPath)
if err != nil {
return err
}
defer file.Close()
mapping, err := windows.CreateFileMapping(windows.Handle(file.Fd()), nil, windows.PAGE_READONLY, 0, 0, nil)
if err != nil && err != windows.ERROR_ALREADY_EXISTS {
return err
}
rl, err := newRingloggerFromMappingHandle(mapping, "DMP", windows.FILE_MAP_READ)
if err != nil {
windows.CloseHandle(mapping)
return err
}
defer rl.Close()
if !continuous {
_, err = rl.WriteTo(out)
if err != nil {
return err
}
} else {
cursor := CursorAll
for {
var items []FollowLine
items, cursor = rl.FollowFromCursor(cursor)
for _, item := range items {
_, err = fmt.Fprintf(out, "%s: %s\n", item.Stamp.Format("2006-01-02 15:04:05.000000"), item.Line)
if errors.Is(err, io.EOF) {
return nil
} else if err != nil {
return err
}
}
time.Sleep(time.Millisecond * 100)
}
}
return nil
}
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