Merge pull request #1 from basedxyz/feat/add-base64urlencode

feat: add base64urlencode

Author: janndriessen

README.md

@@ -60,7 +60,15 @@ BasedUtils.shortenAddress(address1) // "0xd8dA...6045"
 
 ### Extensions
 
+Data
+
+```swift
+let data = "https://example.com".data(using: .utf8)!
+data.base64UrlEncode() // "aHR0cHM6Ly9leGFtcGxlLmNvbQ"
+```
+
 String
+
 ```swift
 let address = "0xd8dA6BF26964aF9D7eEd9e03E53415D37aA96045"
 let hash = "d8dA6B"

Sources/BasedUtils/extensions/Data.swift

@@ -0,0 +1,23 @@
+//
+//  Data.swift
+//
+//
+//  Created by Jann Driessen on 24.06.24.
+//
+
+import Foundation
+
+public extension Data {
+
+    func base64UrlEncode() -> String {
+        var base64String = self.base64EncodedString()
+        // Replace standard Base64 characters to make it URL-safe
+        base64String = base64String
+            .replacingOccurrences(of: "+", with: "-")
+            .replacingOccurrences(of: "/", with: "_")
+            .replacingOccurrences(of: "=", with: "")
+        return base64String
+    }
+
+}
+

Tests/BasedUtilsTests/DataExtensionsTests.swift

@@ -0,0 +1,26 @@
+//
+//  DataExtensionsTests.swift
+//  
+//
+//  Created by Jann Driessen on 24.06.24.
+//
+
+import XCTest
+@testable import BasedUtils
+
+final class DataExtensionsTests: XCTestCase {
+
+    func testBase64UrlEncode() throws {
+        let basicEncoding = "https://example.com".data(using: .utf8)!
+        let urlWithQueryParams = "https://example.com/path?query=parameter".data(using: .utf8)!
+        let urlWithSpecialCharacters = "https://example.com/path?query=param+eter&foo=bar/baz".data(using: .utf8)!
+        let simpleText = "Hello world".data(using: .utf8)!
+        let emptyString = "".data(using: .utf8)!
+        XCTAssertEqual(basicEncoding.base64UrlEncode(), "aHR0cHM6Ly9leGFtcGxlLmNvbQ")
+        XCTAssertEqual(urlWithQueryParams.base64UrlEncode(), "aHR0cHM6Ly9leGFtcGxlLmNvbS9wYXRoP3F1ZXJ5PXBhcmFtZXRlcg")
+        XCTAssertEqual(urlWithSpecialCharacters.base64UrlEncode(), "aHR0cHM6Ly9leGFtcGxlLmNvbS9wYXRoP3F1ZXJ5PXBhcmFtK2V0ZXImZm9vPWJhci9iYXo")
+        XCTAssertEqual(simpleText.base64UrlEncode(), "SGVsbG8gd29ybGQ")
+        XCTAssertEqual(emptyString.base64UrlEncode(), "")
+    }
+
+}