2017/08/07

Prompt In All Language

最近喜歡刻一些互動的小工具,程式碼將需求分析後在 terminal 與 user 互動,confirm 內容後動作是常見的,這邊紀錄一下三個語言的 prompt 方法

prompt.php
<?php

echo 'Are you sure? [y/n]: ';

$handle = fopen('php://stdin', 'r');
$answer = trim(fgets($handle));

if ($answer === 'y') {
    echo 'Yes!'.PHP_EOL;
} else {
    echo 'Canceled!'.PHP_EOL;
}

fclose($handle);
prompt.js
const readline = require('readline');

const rl = readline.createInterface({
    input: process.stdin,
    output: process.stdout
});

rl.question('Are you sure? [y/n]: ', (answer) => {
    if (answer.trim() === 'y') {
        console.log('Yes!');
    } else {
        console.log('Canceled!');
    }

    process.exit();
});
prompt.sh
#!/bin/bash

read -p 'Are you sure? [y/n]: ' answer

if [[ $answer == 'y' ]]; then
    echo "Yes!"
else
    echo "Canceled!"
fi

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