//
//  String+ReadLines.swift
//
//  Created by Dmitry Shmidt on 5/16/18.
//

import Foundation

extension URL{
    func readLines() throws -> [String] {
        let url = self
        let string = try String(contentsOf: url)
        let lines = string.splitByNewLines().compactMap{$0.trimmed()}
        return lines
    }
}

extension String{

    func splitByNewLines() -> [String]{

        let newlineChars = CharacterSet.newlines
        let lines = components(separatedBy: newlineChars).filter{!$0.isEmpty}
        return lines
    }

    func splitBySpace() -> [String]{
        let lines = self.split{$0 == " "}.map(String.init)

        return lines
    }

    func splitByCR() -> [String]{
        let lines = self.split { $0 == "\r" }.map(String.init)
        return lines
    }

    func splitByNull() -> [String]{
        let lines = self.split { $0 == "\0"}.map(String.init)
        return lines
    }

    func splitByWhitespacesAndNewlines() -> [String]{
        let newlineChars = CharacterSet.whitespacesAndNewlines
        let lines = components(separatedBy: newlineChars).filter{!$0.isEmpty}
        return lines
    }

    func trimmed() -> String {
        let trimmedString = self.trimmingCharacters(in: .whitespaces)
        return trimmedString
    }
}