80 lines
2.5 KiB
Swift
80 lines
2.5 KiB
Swift
//
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// CloudDriveFormatter.swift
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// suixinkan
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//
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import Foundation
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import UIKit
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/// 云盘展示格式化工具。
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enum CloudDriveFormatter {
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/// 文件类型名称。
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static func typeName(_ type: Int) -> String {
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switch type {
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case 1:
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"视频"
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case 2:
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"图片"
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case 99:
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"文件夹"
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default:
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"文件"
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}
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}
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/// 文件描述。
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static func fileDescription(_ file: CloudFile) -> String {
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let createdDate = dateOnly(file.createdAt)
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if file.isFolder {
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return "\(createdDate) | \(file.childNum)个项目"
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}
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return "\(createdDate) | \(fileSize(file.fileSize))"
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}
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/// 文件大小展示。
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static func fileSize(_ bytes: Int64) -> String {
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guard bytes > 0 else { return "0 B" }
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let units = ["B", "KB", "MB", "GB", "TB"]
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var value = Double(bytes)
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var index = 0
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while value >= 1024, index < units.count - 1 {
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value /= 1024
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index += 1
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}
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return String(format: "%.2f %@", value, units[index])
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}
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/// 将后端时间转换为 Android 列表使用的 yyyy-MM-dd 日期。
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static func dateOnly(_ value: String) -> String {
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guard !value.isEmpty else { return "" }
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if value.count >= 10 {
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let endIndex = value.index(value.startIndex, offsetBy: 10)
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return String(value[..<endIndex])
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}
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return value
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}
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/// URL 或文件名的后缀。
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static func fileExtension(_ value: String) -> String {
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let ext = URL(string: value)?.pathExtension ?? URL(fileURLWithPath: value).pathExtension
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return ext.isEmpty ? typeName(0) : ext.uppercased()
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}
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}
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/// 云盘 Android 同名图片资源访问工具。
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enum CloudDriveAsset {
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/// 返回云盘图片资源，缺失时使用系统图标兜底。
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static func image(named name: String, fallbackSystemName: String) -> UIImage? {
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UIImage(named: name)?.withRenderingMode(.alwaysOriginal) ?? UIImage(systemName: fallbackSystemName)
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}
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/// 返回缩放到指定点尺寸的云盘图标。
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static func resizedImage(named name: String, fallbackSystemName: String, size: CGSize) -> UIImage? {
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guard let source = image(named: name, fallbackSystemName: fallbackSystemName) else { return nil }
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let renderer = UIGraphicsImageRenderer(size: size)
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return renderer.image { _ in
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source.draw(in: CGRect(origin: .zero, size: size))
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}.withRenderingMode(.alwaysOriginal)
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}
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}
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