func findJSONEnd(file *os.File, end byte) int64 {
fileInfo, err := file.Stat()
if err != nil {
log.Fatalf("could not read file stat: %v", err)
}
size := fileInfo.Size()
var ret int64
for i := 1; i <= int(size); i++ {
bs := make([]byte, 1)
r, err := file.Seek(-int64(i), io.SeekEnd)
if err != nil {
log.Fatalf("could not seek at: %d: %v", -int64(i), err)
}
_, err = file.Read(bs)
if err != nil {
log.Fatalf("could read from file: %v", err)
}
if bs[0] == end {
ret = r
}
}
return ret
}