GoLang doodles

readbyline.go

func readFileWithReadString(fn string) (err error) {
    fmt.Println("readFileWithReadString")

    file, err := os.Open(fn)
    if err != nil {
        return err
    }
    defer file.Close()

    // Start reading from the file with a reader.
    reader := bufio.NewReader(file)
    var line string
    for {
        line, err = reader.ReadString('\n')
        if err != nil && err != io.EOF {
            break
        }

        // Process the line here.
        fmt.Printf(" > Read %d characters\n", len(line))
        fmt.Printf(" > > %s\n", limitLength(line, 50))

        if err != nil {
            break
        }
    }
    if err != io.EOF {
        fmt.Printf(" > Failed with error: %v\n", err)
        return err
    }
    return
}