我正在使用Mac桌面应用程序,并试图运行Shell脚本。我正在为该任务设置启动路径。这是代码:
let path = fileURL.deletingLastPathComponent().relativePath
//set new filename
let strNewFileName = fileURL.deletingPathExtension().lastPathComponent.appending(".html")
let newPath = path + "/" + strNewFileName
//create script
var strScript = "pandoc -s -o "
strScript.append(newPath)
strScript.append(" ")
strScript.append(fileURL.absoluteString)
//set storage path
let documentsPath = NSSearchPathForDirectoriesInDomains(.documentDirectory, .userDomainMask, true)[0]
var documentPath:URL = URL(string: documentsPath)!
documentPath.appendPathComponent("pandoc.sh")
var myURLComponents = URLComponents()
myURLComponents.scheme = "file"
myURLComponents.path = documentPath.absoluteString
do {
//write file
try strScript.write(to: myURLComponents.url!, atomically: true, encoding: String.Encoding.utf8)
//run script
let myTask = Process()
myTask.launchPath = "/usr/bin/env"
myTask.arguments = [strScript]
let myPipe = Pipe()
myTask.standardOutput = myPipe
myTask.launch()
let data = myPipe.fileHandleForReading.readDataToEndOfFile()
let output = NSString(data: data, encoding: String.Encoding.utf8.rawValue)
print(output!)
} catch {
print(error.localizedDescription)
}
这不会引发此类文件错误:
env: pandoc -s -o /Users/stevensuranie/Desktop/MarkdownFiles/targeting-params-ios.html file:///Users/stevensuranie/Desktop/MarkdownFiles/targeting-params-ios.md: No such file or directory
任何帮助将不胜感激。
答案 0 :(得分:1)
此行无效
var documentPath:URL = URL(string: documentsPath)!
URL(string
适用于URL字符串,包括方案(file://
或https://
),适用于您必须使用URL(fileURLWithPath
的文件系统路径。
但是,如果您使用FileManager
的URL相关API,则可以完全避免使用init
方法。
类似的问题是absoluteString
,切勿在文件系统URL上调用它,而始终使用path
。
第二个致命问题是,每个shell参数必须是arguments
数组中的一个项目,并且必须使用完整路径指定可执行文件
//create script
let scriptArguments = ["/path/to/pandoc", "-s", "-o", newPath, fileURL.path]
//set storage path
let documentsURL = try! FileManager.default.url(for: .documentDirectory, in: .userDomainMask, appropriateFor: nil, create: false)
let scriptURL = documentsURL.appendingPathComponent("pandoc.sh")
以下几行是多余的
var myURLComponents = URLComponents()
myURLComponents.scheme = "file"
myURLComponents.path = documentPath.absoluteString
将字符串写入scriptURL
do {
//write file
try strScript.write(to: scriptURL, atomically: true, encoding: .utf8)
...
myTask.arguments = scriptArguments
最后不要在Swift中使用NS...
类
let output = NSString(data: data, encoding: String.Encoding.utf8.rawValue)
使用等效的native
let output = String(data: data, encoding: .utf8)