使用 NSTask 将系统分析器信息保存在 .spx 文件中

发布于 2024-08-22 17:21:22 字数 866 浏览 2 评论 0原文

在 Cocoa 中，我试图实现一个按钮，当用户单击该按钮时，将捕获系统分析器报告并将其粘贴到桌面上。

代码

 NSTask *taskDebug;
NSPipe *pipeDebug;
 taskDebug = [[NSTask alloc] init];
[[NSNotificationCenter defaultCenter] addObserver:selfselector:@selector(taskFinished:)       name:NSTaskDidTerminateNotification object:taskDebug];
 [profilerButton setTitle:@"Please Wait"];
 [profilerButton setEnabled:NO];

  [taskDebug setLaunchPath: @"/usr/sbin/system_profiler"];

  NSArray *args = [NSArray arrayWithObjects:@"-xml",@"-detailLevel",@"full",@">", @" 
    ~/Desktop/Profiler.spx",nil];
  [taskDebug setArguments:args];


  [taskDebug launch];

但这不会将文件保存到桌面。拥有 NSArray *args = [NSArray arrayWithObjects:@"-xml",@"-detailLevel",@"full",nil] 有效并且它会在控制台窗口中删除整个系统分析器输出。

关于为什么这不起作用或如何更好地实施这一点有什么建议吗？我试图避免使用 shell 脚本或 AppleScript 来获取系统分析器。如果没有任何作用，那将是我的最终选择。提前致谢。

原文

In Cocoa, I am trying to implement a button, which when the user clicks on will capture the System profiler report and paste it on the Desktop.

Code

 NSTask *taskDebug;
NSPipe *pipeDebug;
 taskDebug = [[NSTask alloc] init];
[[NSNotificationCenter defaultCenter] addObserver:selfselector:@selector(taskFinished:)       name:NSTaskDidTerminateNotification object:taskDebug];
 [profilerButton setTitle:@"Please Wait"];
 [profilerButton setEnabled:NO];

  [taskDebug setLaunchPath: @"/usr/sbin/system_profiler"];

  NSArray *args = [NSArray arrayWithObjects:@"-xml",@"-detailLevel",@"full",@">", @" 
    ~/Desktop/Profiler.spx",nil];
  [taskDebug setArguments:args];


  [taskDebug launch];

But this does not save the file to the Desktop. Having
NSArray *args = [NSArray arrayWithObjects:@"-xml",@"-detailLevel",@"full",nil]
works and it drops the whole sys profiler output in the Console Window.

Any tips on why this does not work or how to better implement this ? I am trying to refrain from using a shell script or APpleScript to get the system profiler. If nothing work's that would be my final option.
Thanks in advance.

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暗藏城府 2024-08-29 17:21:22

NSArray *args = [NSArray arrayWithObjects:@"-xml",@"-detailLevel",@"full",@">", @"~/Desktop/Profiler.spx",nil] ;

这是行不通的，因为您没有通过 shell，而 > 是一个 shell 操作符。（此外，~ 并不特殊，除非您使用 stringByExpandingTildeInPath 展开它。）

创建一个 NSFileHandle 以写入该分析器 .spx 文件，确保使用完整的绝对路径，而不是波浪号缩写的路径。然后，将 NSFileHandle 设置为任务的标准输出。这本质上就是当您在 shell 中使用 > 运算符时 shell 所做的事情。

NSArray *args = [NSArray arrayWithObjects:@"-xml",@"-detailLevel",@"full",@">", @"~/Desktop/Profiler.spx",nil];

That won't work because you aren't going through the shell, and > is a shell operator. (Also, ~ isn't special except when you expand it using stringByExpandingTildeInPath.)

Create an NSFileHandle for writing to that Profiler.spx file, making sure to use the full absolute path, not the tilde-abbreviated path. Then, set that NSFileHandle as the task's standard output. This is essentially what the shell does when you use a > operator in it.

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南笙 2024-08-29 17:21:22

这样就完成了（感谢 Peter 和 Costique）

[taskDebug setLaunchPath: @"/usr/sbin/system_profiler"];    
NSArray *args = [NSArray arrayWithObjects:@"-xml",@"-         detailLevel",@"full",nil];


[taskDebug setArguments:args];

[[NSFileManager defaultManager] createFileAtPath: [pathToFile stringByExpandingTildeInPath] contents: nil attributes: nil];

outFile = [ NSFileHandle fileHandleForWritingAtPath:[pathToFile stringByExpandingTildeInPath]];

[taskDebug setStandardOutput:outFile];
[taskDebug launch];

This got it done ( thanks to Peter and Costique)

[taskDebug setLaunchPath: @"/usr/sbin/system_profiler"];    
NSArray *args = [NSArray arrayWithObjects:@"-xml",@"-         detailLevel",@"full",nil];


[taskDebug setArguments:args];

[[NSFileManager defaultManager] createFileAtPath: [pathToFile stringByExpandingTildeInPath] contents: nil attributes: nil];

outFile = [ NSFileHandle fileHandleForWritingAtPath:[pathToFile stringByExpandingTildeInPath]];

[taskDebug setStandardOutput:outFile];
[taskDebug launch];

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