您可以通过Shell脚本实现OS X的Finder下载进度条吗? [英] Can you implement OS X's Finder download progress bars from a shell script?

问题描述

起初，我认为这可能是扩展属性的一些变体，可以使用xattr命令行工具对其进行修改.但是，我已经进行了几次测试，在这种模式下，文件似乎没有任何特殊属性.

这是否可以从命令行访问，还是只能从某些可可api内部访问?

解决方案

如果您不介意使用swift编写脚本:

#!/usr/bin/env swift

import Foundation

let path = ProcessInfo.processInfo.environment["HOME"]! + "/Downloads/a.txt"
FileManager.default.createFile(atPath: path, contents: nil, attributes: [:])
let url = URL(fileURLWithPath: path)

let progress = Progress(parent: nil, userInfo: [
    ProgressUserInfoKey.fileOperationKindKey: Progress.FileOperationKind.downloading,
    ProgressUserInfoKey.fileURLKey: url,
])

progress.kind = .file
progress.isPausable = false
progress.isCancellable = false
progress.totalUnitCount = 5
progress.publish()

while (progress.completedUnitCount < progress.totalUnitCount) {
    sleep(1)
    progress.completedUnitCount += 1
    NSLog("progress %d", progress.completedUnitCount)
}

NSLog("Finished")

(Apple Swift版本4.1.2，Xcode 9.4)

感谢 https://gist.github.com/mminer/3c0fbece956f3a5fa795563fafb139ae

At first I thought this might be some variation on the extended attributes that can be modified with the xattr command line tool. However, I've staged several tests, and the files don't seem to have any special attributes while in this mode.

Is this accessible at all from the command line, or is it only possible from within some cocoa api?

解决方案

If you don't mind scripting with swift:

#!/usr/bin/env swift

import Foundation

let path = ProcessInfo.processInfo.environment["HOME"]! + "/Downloads/a.txt"
FileManager.default.createFile(atPath: path, contents: nil, attributes: [:])
let url = URL(fileURLWithPath: path)

let progress = Progress(parent: nil, userInfo: [
    ProgressUserInfoKey.fileOperationKindKey: Progress.FileOperationKind.downloading,
    ProgressUserInfoKey.fileURLKey: url,
])

progress.kind = .file
progress.isPausable = false
progress.isCancellable = false
progress.totalUnitCount = 5
progress.publish()

while (progress.completedUnitCount < progress.totalUnitCount) {
    sleep(1)
    progress.completedUnitCount += 1
    NSLog("progress %d", progress.completedUnitCount)
}

NSLog("Finished")

(Apple Swift version 4.1.2, Xcode 9.4)

Thanks to https://gist.github.com/mminer/3c0fbece956f3a5fa795563fafb139ae

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