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//
// String+Extensions.swift
// Nextcloud
//
// Created by Marino Faggiana on 22/12/20.
// Copyright © 2020 Marino Faggiana. All rights reserved.
//
// Author Marino Faggiana <marino.faggiana@nextcloud.com>
//
// This program is free software: you can redistribute it and/or modify
// it under the terms of the GNU General Public License as published by
// the Free Software Foundation, either version 3 of the License, or
// (at your option) any later version.
//
// This program is distributed in the hope that it will be useful,
// but WITHOUT ANY WARRANTY; without even the implied warranty of
// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
// GNU General Public License for more details.
//
// You should have received a copy of the GNU General Public License
// along with this program. If not, see <http://www.gnu.org/licenses/>.
//
import Foundation
import UIKit
import CommonCrypto
extension String {
var alphanumeric: String {
return self.components(separatedBy: CharacterSet.alphanumerics.inverted).joined().lowercased()
}
public var uppercaseInitials: String? {
let initials = self.components(separatedBy: .whitespaces)
.reduce("", {
guard $0.count < 2, let nextLetter = $1.first else { return $0 }
return $0 + nextLetter.uppercased()
})
return initials.isEmpty ? nil : initials
}
func formatSecondsToString(_ seconds: TimeInterval) -> String {
if seconds.isNaN {
return "00:00:00"
}
let sec = Int(seconds.truncatingRemainder(dividingBy: 60))
let min = Int(seconds.truncatingRemainder(dividingBy: 3600) / 60)
let hour = Int(seconds / 3600)
return String(format: "%02d:%02d:%02d", hour, min, sec)
}
func md5() -> String {
//https://stackoverflow.com/a/32166735/9506784
let length = Int(CC_MD5_DIGEST_LENGTH)
let messageData = self.data(using: .utf8) ?? Data()
var digestData = Data(count: length)
_ = digestData.withUnsafeMutableBytes { digestBytes -> UInt8 in
messageData.withUnsafeBytes { messageBytes -> UInt8 in
if let messageBytesBaseAddress = messageBytes.baseAddress, let digestBytesBlindMemory = digestBytes.bindMemory(to: UInt8.self).baseAddress {
let messageLength = CC_LONG(messageData.count)
CC_MD5(messageBytesBaseAddress, messageLength, digestBytesBlindMemory)
}
return 0
}
}
return digestData.map { String(format: "%02hhx", $0) }.joined()
}
}
extension StringProtocol {
var firstUppercased: String { lowercased().prefix(1).uppercased() + dropFirst() }
}
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