515 lines
16 KiB
Swift
515 lines
16 KiB
Swift
//
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// String+public extension.swift
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// SwiftBasics
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//
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// Created by 侯伟 on 17/1/11.
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// Copyright © 2017年 侯伟. All rights reserved.
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//
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import Foundation
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import SwiftyJSON
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import CommonCrypto
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import URLNavigator
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public extension String {
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var completePicUrl: String {
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if !self.hasPrefix("http") {
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if self.hasPrefix("//") {
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return "http:" + self
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} else {
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return "http://fec-img.gan-hai.com" + self
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}
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} else {
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return self
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}
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}
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var length: Int { return self.count }
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}
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public extension JSON {
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/// JSON to String
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var jsonString: String { return rawString(String.Encoding.utf8, options: JSONSerialization.WritingOptions()) ?? "" }
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}
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// MARK: URL encode/decode
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public extension String {
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/// URL编码
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var urlEncoded: String {
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return self.addingPercentEncoding(withAllowedCharacters: CharacterSet.urlHostAllowed) ?? self
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}
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var urlEncodingWithQueryAllowedCharacters: String {
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return self.addingPercentEncoding(withAllowedCharacters: CharacterSet.urlQueryAllowed) ?? self
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}
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/// URL解码
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var urlDecoded: String {
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return self.removingPercentEncoding ?? self
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}
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}
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// MARK: md5
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public extension String {
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var MD5String: String {
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let cStrl = cString(using: String.Encoding(rawValue: String.Encoding.utf8.rawValue));
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let buffer = UnsafeMutablePointer<UInt8>.allocate(capacity: 16);
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CC_MD5(cStrl, CC_LONG(strlen(cStrl!)), buffer);
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var md5String = "";
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for idx in 0...15 {
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let obcStrl = String.init(format: "%02x", buffer[idx]);
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md5String.append(obcStrl);
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}
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free(buffer);
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return md5String;
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}
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}
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// MARK: Base64
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public extension String {
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/// Base64编码
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var base64Encoded: String {
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return data.base64EncodedString(options: [])
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}
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/// Base64解码
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var base64Decoded: String {
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return Data(base64Encoded: self, options: [])?.string ?? ""
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}
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}
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public extension String {
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var md5: String {
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let data = self.data
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var digest = [UInt8](repeating: 0, count: Int(CC_MD5_DIGEST_LENGTH))
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CC_MD5((data as NSData).bytes, CC_LONG(data.count), &digest)
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let hexBytes = digest.map { String(format: "%02hhx", $0) }
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return hexBytes.joined(separator: "")
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}
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var sha1: String {
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let data = self.data
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var digest = [UInt8](repeating: 0, count: Int(CC_SHA1_DIGEST_LENGTH))
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CC_SHA1((data as NSData).bytes, CC_LONG(data.count), &digest)
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let hexBytes = digest.map { String(format: "%02hhx", $0) }
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return hexBytes.joined(separator: "")
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}
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}
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// MARK: Get the size of the text
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public extension String {
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/// 计算制定字体大小的文字显示尺寸（系统默认字体）
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func size(fontSize: CGFloat, width: CGFloat = CGFloat.greatestFiniteMagnitude) -> CGSize {
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return size(font: UIFont.systemFont(ofSize: fontSize), width: width)
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}
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/// 计算制定字体的文字显示尺寸
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func size(font: UIFont, width: CGFloat = CGFloat.greatestFiniteMagnitude) -> CGSize {
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let size = CGSize(width: width, height: CGFloat.greatestFiniteMagnitude)
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let paragraphStyle = NSMutableParagraphStyle()
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paragraphStyle.lineBreakMode = .byWordWrapping
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let attributes = [
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NSAttributedString.Key.font: font,
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NSAttributedString.Key.paragraphStyle: paragraphStyle.copy()
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]
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return (self as NSString).boundingRect(with: size, options: .usesLineFragmentOrigin, attributes: attributes, context: nil).size
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}
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/// 获取文字几行的高度
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/// - Parameter count: 几行
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/// - Returns: 高度
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func lineHeight(_ count: Int = 1,
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font: UIFont,
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width: CGFloat = CGFloat.greatestFiniteMagnitude) -> CGFloat {
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size(font: font, width: width).height * CGFloat(count)
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}
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}
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// MARK: Substring
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public extension String {
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func substring(_ fromIndex: Int, _ toIndex: Int = Int.max) -> String? {
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let len = self.length
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var start: Int
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var end: Int
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if fromIndex < 0 {
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start = 0
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end = len + fromIndex
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} else {
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start = fromIndex
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if toIndex < 0 {
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end = len + toIndex
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} else {
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end = min(toIndex, len)
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}
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}
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if start > end {
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return nil
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}
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return self[start..<end]
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}
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subscript(range: Range<Int>) -> String? {
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let len = self.length
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if range.lowerBound >= len || range.upperBound < 0 {
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return nil
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}
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let startIndex = self.index(self.startIndex, offsetBy: max(0, range.lowerBound))
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let endIndex = self.index(self.startIndex, offsetBy: min(len, range.upperBound))
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return String(self[startIndex..<endIndex])
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}
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subscript(index: Int) -> Character? {
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if index < 0 || index >= self.length {
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return nil
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}
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return self[self.index(self.startIndex, offsetBy: index)]
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}
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}
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// MARK: Trim
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public extension String {
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/// 删除前后空白符（包含空格、Tab、回车、换行符）
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var trimmed: String {
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return self.trimmingCharacters(in: CharacterSet.whitespacesAndNewlines)
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}
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}
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// MARK: Localized String
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public extension String {
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var localizedString: String {
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return NSLocalizedString(self, comment: "")
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}
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}
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// MARK: - NSData
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public extension String {
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/// 返回UTF8字符集的NSData对象
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var data: Data {
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return self.data(using: String.Encoding.utf8, allowLossyConversion: false)!
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}
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}
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public extension Data {
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/// 返回UTF8字符串
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var string: String {
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return String(data: self, encoding: String.Encoding.utf8) ?? ""
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}
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}
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// MARK: - Int
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public extension String {
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var int: Int32 { return (self as NSString).intValue }
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var integer: Int { return (self as NSString).integerValue }
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}
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public extension Int {
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var string: String { return String(self) }
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}
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// MARK: - Float
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public extension String {
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var float: Float { return (self as NSString).floatValue }
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}
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public extension Float {
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var string: String { return String(self) }
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}
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// MARK: - Double
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public extension String {
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var double: Double { return (self as NSString).doubleValue }
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}
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public extension Double {
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var string: String { return String(self) }
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}
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// MARK: - Bool
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public extension String {
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var bool: Bool { return (self as NSString).boolValue }
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}
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public extension Bool {
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var string: String { return self ? "true" : "false" }
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}
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public extension String {
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// 对象方法
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func getFileSize() -> UInt64 {
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var size: UInt64 = 0
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let fileManager = FileManager.default
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var isDir: ObjCBool = false
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let isExists = fileManager.fileExists(atPath: self, isDirectory: &isDir)
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// 判断文件存在
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if isExists {
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// 是否为文件夹
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if isDir.boolValue {
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// 迭代器 存放文件夹下的所有文件名
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let enumerator = fileManager.enumerator(atPath: self)
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for subPath in enumerator! {
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// 获得全路径
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let fullPath = self.appending("/\(subPath)")
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do {
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let attr = try fileManager.attributesOfItem(atPath: fullPath)
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size += attr[FileAttributeKey.size] as! UInt64
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} catch {
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print("error :\(error)")
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}
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}
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} else { // 单文件
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do {
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let attr = try fileManager.attributesOfItem(atPath: self)
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size += attr[FileAttributeKey.size] as! UInt64
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} catch {
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print("error :\(error)")
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}
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}
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}
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return size
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}
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}
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// MARK: - 文字颜色
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public extension String {
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func changeTextColor(color: UIColor, font: UIFont, text: String) -> NSMutableAttributedString {
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let nsString = NSString(string: self)
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let attributeString = NSMutableAttributedString(string: self)
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let arrRange = rangeOfString(string: nsString, andInString: text)
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for range in arrRange {
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attributeString.addAttributes([NSAttributedString.Key.font: font], range: range)
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attributeString.addAttributes([NSAttributedString.Key.foregroundColor: color], range: range)
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}
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return attributeString
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}
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func changeTextColor(color: UIColor, font: UIFont, firstText: String, secondText: String) -> NSMutableAttributedString {
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let nsString = NSString(string: self)
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let attributeString = NSMutableAttributedString(string: self)
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let firstArrRange = rangeOfString(string: nsString, andInString: firstText)
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for range in firstArrRange {
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attributeString.addAttributes([NSAttributedString.Key.font: font], range: range)
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attributeString.addAttributes([NSAttributedString.Key.foregroundColor: color], range: range)
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}
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let secondArrRange = rangeOfString(string: nsString, andInString: secondText)
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for range in secondArrRange {
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attributeString.addAttributes([NSAttributedString.Key.font: font], range: range)
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attributeString.addAttributes([NSAttributedString.Key.foregroundColor: color], range: range)
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}
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return attributeString
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}
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/// 获取字符出现的位置信息(支持多次位置获取)
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/// - Parameter string: 原始文本
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/// - Parameter inString: 需要查找的字符
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private func rangeOfString(string:NSString,
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andInString inString:String) -> [NSRange] {
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var arrRange = [NSRange]()
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var _fullText = string
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var rang:NSRange = _fullText.range(of: inString)
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while rang.location != NSNotFound {
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var location:Int = 0
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if arrRange.count > 0 {
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if arrRange.last!.location + arrRange.last!.length < string.length {
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location = arrRange.last!.location + arrRange.last!.length
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}
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}
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_fullText = NSString.init(string: _fullText.substring(from: rang.location + rang.length))
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if arrRange.count > 0 {
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rang.location += location
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}
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arrRange.append(rang)
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rang = _fullText.range(of: inString)
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}
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return arrRange
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}
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}
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public extension String {
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/// 从URL字符串解析查询参数
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var urlQueryParameters: [String: String] {
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guard let url = URL(string: self) else { return [:] }
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return url.queryParameters
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}
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/// 从String中截取出参数
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var urlParameters: [String: AnyObject]? {
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// 判断是否有参数
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let text = self as NSString
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let range = text.range(of: "?")
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var params = [String: AnyObject]()
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// 截取参数
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let paramsString = text.substring(with: range)
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// 判断参数是单个参数还是多个参数
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if paramsString.contains("&") {
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// 多个参数，分割参数
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let urlComponents = paramsString.components(separatedBy: "&")
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// 遍历参数
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for keyValuePair in urlComponents {
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// 生成Key/Value
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let pairComponents = keyValuePair.components(separatedBy: "=")
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let key = pairComponents.first?.removingPercentEncoding
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let value = pairComponents.last?.removingPercentEncoding
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// 判断参数是否是数组
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if let key = key, let value = value {
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params[key] = value as AnyObject
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// 已存在的值，生成数组
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// if let existValue = params[key] {
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// if var existValue = existValue as? [AnyObject] {
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// existValue.append(value)
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// } else {
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// params[key] = [existValue, value]
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// }
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// } else {
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// params[key] = value as AnyObject
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// }
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}
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}
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} else {
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// 单个参数
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let pairComponents = paramsString.components(separatedBy: "=")
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// 判断是否有值
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if pairComponents.count == 1 {
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return nil
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}
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let key = pairComponents.first?.removingPercentEncoding
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let value = pairComponents.last?.removingPercentEncoding
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if let key = key, let value = value {
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params[key] = value as AnyObject
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}
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}
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return params
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}
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}
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public extension String {
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func custemReplaceString(of targetStr:String,
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with replaceStr:String,
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replaceColor: UIColor) -> NSMutableAttributedString {
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let labelString = self.replacingOccurrences(of: targetStr, with: replaceStr)
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let nsString = labelString as NSString
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let range = nsString.range(of: replaceStr)
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let mutableStr = NSMutableAttributedString(string: labelString)
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mutableStr.setAttributes([NSAttributedString.Key.foregroundColor: replaceColor], range: range)
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return mutableStr
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}
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}
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public extension String {
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/// 手机号格式化去0
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var phoneFromatter: String {
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if let phone = Int64(self) {
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return String(phone)
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}
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return self
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}
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}
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// MARK: - 转换为NSNumber
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public extension String {
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var number: NSNumber? {
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let boolNumbers = ["true": true, "false": false, "yes": true, "no": false]
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let nilNumbers = ["nil", "null", "(null)", "<null>"]
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let lowerStr = self.lowercased()
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if let value = boolNumbers[lowerStr] { return NSNumber(value: value) }
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if nilNumbers.contains(lowerStr) { return nil }
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guard let cstring = self.cString(using: .utf8) else { return nil }
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if self.rangeOfCharacter(from: CharacterSet(charactersIn: ".")) != nil {
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let cnumber = atof(cstring)
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if cnumber.isNaN || cnumber.isInfinite { return nil }
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return NSNumber(value: cnumber)
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} else {
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return NSNumber(value: atoll(cstring))
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}
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}
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}
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// MARK: - 正则
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public extension String {
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/// 检测Email 邮箱格式是否有效
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static func checkEmailAddressIsValid(address: String?) -> Bool {
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guard address != nil else {
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return false
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}
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let regular = "[A-Z0-9a-z._%+-]+@[A-Za-z0-9.-]+\\.[A-Za-z]{2,4}"
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let regularEmail = NSPredicate(format: "SELF MATCHES %@", regular)
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return regularEmail.evaluate(with: address)
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}
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}
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// MARK: - 手机号中间用 **** 替换
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extension String {
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/// 手机号中间隐藏
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func phoneFormat() -> String {
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guard self.length > 6 else { return self }
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let preStr = self.substring(0, 3)
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let suffixStr = self.substring(self.length - 4, self.length)
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return (preStr ?? "") + "****" + (suffixStr ?? "")
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}
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}
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// MARK: - 生成二维码
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extension String {
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func createQRCode(size: CGSize = CGSize(width: 200, height: 200)) -> UIImage? {
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// 1. 字符串转 Data
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guard let data = self.data(using: .utf8) else { return nil }
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// 2. 创建二维码滤镜
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guard let qrFilter = CIFilter(name: "CIQRCodeGenerator") else { return nil }
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qrFilter.setDefaults()
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qrFilter.setValue(data, forKey: "inputMessage")
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// 容错率：L(7%)/M(15%)/Q(25%)/H(30%)，越高容错越强
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qrFilter.setValue("H", forKey: "inputCorrectionLevel")
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// 3. 获取 CIImage 并放大（原生默认很小，必须放大否则模糊）
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guard let ciImage = qrFilter.outputImage else { return nil }
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let scaleX = size.width / ciImage.extent.width
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let scaleY = size.height / ciImage.extent.height
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let transform = CGAffineTransform(scaleX: scaleX, y: scaleY)
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let scaledCI = ciImage.transformed(by: transform)
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// 4. 转 UIImage
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if let cgImage = CIContext(options: [.useSoftwareRenderer: false]).createCGImage(scaledCI, from: scaledCI.extent) {
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return UIImage(cgImage: cgImage)
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}
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return nil
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}
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}
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