term.go

/*
 * Pretty command-line password manager.
 *
 * Copyright (c) 2014, Alessandro Ghedini
 * All rights reserved.
 *
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions are
 * met:
 *
 *     * Redistributions of source code must retain the above copyright
 *       notice, this list of conditions and the following disclaimer.
 *
 *     * Redistributions in binary form must reproduce the above copyright
 *       notice, this list of conditions and the following disclaimer in the
 *       documentation and/or other materials provided with the distribution.
 *
 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS
 * IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO,
 * THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR
 * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
 * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
 * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
 * PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF
 * LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
 * NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
 * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
 */

package term

import "bufio"
import "bytes"
import "fmt"
import "os"

import "golang.org/x/crypto/ssh/terminal"

func ReadLine(prompt string) (string, error) {
    fmt.Fprint(os.Stderr, prompt)

    tmp, err := bufio.NewReader(os.Stdin).ReadBytes('\n')
    if err != nil {
        return "", fmt.Errorf("Input error: %s", err)
    }

    tmp = bytes.TrimSuffix(tmp, []byte("\n"))

    return string(tmp), nil
}

func ReadPass(prompt string) (string, error) {
    fmt.Fprint(os.Stderr, prompt)

    tmp, err := terminal.ReadPassword(0)
    if err != nil {
        return "", fmt.Errorf("Input error: %s", err)
    }

    fmt.Fprintln(os.Stderr, "")

    return string(tmp), nil
}