URL文字列エスケーパー

' Excel VBAの例
Function URLEncode(ByVal Text As String) As String
    Dim i As Integer
    Dim CharCode As Integer
    Dim Char As String
    Dim EncodedText As String

    For i = 1 To Len(Text)
        Char = Mid(Text, i, 1)
        CharCode = AscW(Char)
        Select Case CharCode
            Case 48 To 57, 65 To 90, 97 To 122, 45, 46, 95, 126 ' 0-9, A-Z, a-z, -, ., _, ~
                EncodedText = EncodedText & Char
            Case Else
                If CharCode < 0 Then
                    ' Unicode文字を処理
                    EncodedText = EncodedText & "%" & Hex(65536 + CharCode)
                Else
                    EncodedText = EncodedText & "%" & Right("0" & Hex(CharCode), 2)
                End If
        End Select
    Next i
    URLEncode = EncodedText
End Function

' 使用例：
' =URLEncode("https://example.com/?name=Jürgen")

% MATLABの例
function encodedURL = urlEncode(url)
    import java.net.URLEncoder
    encodedURL = char(URLEncoder.encode(url, 'UTF-8'));
end

% 使用例：
% encodedURL = urlEncode('https://example.com/?name=Jürgen');

## Rubyの例
require 'uri'

url = 'https://example.com/path?query=hello world&name=Jürgen'
encoded_url = URI::DEFAULT_PARSER.escape(url)
puts encoded_url
## 出力: https://example.com/path?query=hello%20world&name=J%C3%BCrgen

// Rustの例
use url::form_urlencoded;

fn main() {
    let url = "https://example.com/path?query=hello world&name=Jürgen";
    let encoded_url = percent_encode(url);
    println!("{}", encoded_url);
    // 出力: https://example.com/path%3Fquery%3Dhello%20world%26name%3DJ%C3%BCrgen
}

fn percent_encode(input: &str) -> String {
    use percent_encoding::{utf8_percent_encode, NON_ALPHANUMERIC};
    utf8_percent_encode(input, NON_ALPHANUMERIC).to_string()
}

## Pythonの例
import urllib.parse

url = 'https://example.com/path?query=hello world&name=Jürgen'
encoded_url = urllib.parse.quote(url, safe=':/?&=')
print(encoded_url)
## 出力: https://example.com/path?query=hello%20world&name=J%C3%BCrgen

// JavaScriptの例
const url = 'https://example.com/path?query=hello world&name=Jürgen';
const encodedURL = encodeURI(url);
console.log(encodedURL);
// 出力: https://example.com/path?query=hello%20world&name=J%C3%BCrgen

// Javaの例
import java.net.URLEncoder;
import java.nio.charset.StandardCharsets;

public class URLEncodeExample {
    public static void main(String[] args) throws Exception {
        String url = "https://example.com/path?query=hello world&name=Jürgen";
        String encodedURL = URLEncoder.encode(url, StandardCharsets.UTF_8.toString());
        // スペースを"%20"に置き換える
        encodedURL = encodedURL.replace("+", "%20");
        System.out.println(encodedURL);
        // 出力: https%3A%2F%2Fexample.com%2Fpath%3Fquery%3Dhello%20world%26name%3DJ%C3%BCrgen
    }
}

// C#の例
using System;
using System.Net;

class Program
{
    static void Main()
    {
        string url = "https://example.com/path?query=hello world&name=Jürgen";
        string encodedURL = Uri.EscapeUriString(url);
        Console.WriteLine(encodedURL);
        // 出力: https://example.com/path?query=hello%20world&name=J%C3%BCrgen
    }
}

<?php
// PHPの例
$url = 'https://example.com/path?query=hello world&name=Jürgen';
$encodedURL = urlencode($url);
echo $encodedURL;
// 出力: https%3A%2F%2Fexample.com%2Fpath%3Fquery%3Dhello+world%26name%3DJ%C3%BCrgen
?>

// Goの例
package main

import (
    "fmt"
    "net/url"
)

func main() {
    urlStr := "https://example.com/path?query=hello world&name=Jürgen"
    encodedURL := url.QueryEscape(urlStr)
    fmt.Println(encodedURL)
    // 出力: https%3A%2F%2Fexample.com%2Fpath%3Fquery%3Dhello+world%26name%3DJ%25C3%25BCrgen
}

// Swiftの例
import Foundation

let url = "https://example.com/path?query=hello world&name=Jürgen"
if let encodedURL = url.addingPercentEncoding(withAllowedCharacters: .urlQueryAllowed) {
    print(encodedURL)
    // 出力: https://example.com/path?query=hello%20world&name=J%C3%BCrgen
}

## Rの例
url <- "https://example.com/path?query=hello world&name=Jürgen"
encodedURL <- URLencode(url, reserved = TRUE)
print(encodedURL)
## 出力: https://example.com/path?query=hello%20world&name=J%C3%BCrgen