【Mac】MacOS: shell script from application

启动一个脚本

 

NSTask *task = [[NSTask alloc] init];
[task setLaunchPath:@"/path/to/script/sh"];
[task setArguments:[NSArray arrayWithObjects:@"yourScript.sh", nil]];
[task setStandardOutput:[NSPipe pipe]];
[task setStandardInput:[NSPipe pipe]];

[task launch];
[task release];

 

That would run the command /path/to/script/sh yourScript.sh. If you need any arguments for your script, you can add them to the array of arguments. The standard output will redirect all output to a pipe object, which you can hook into if you want to output to a file. The reason we need to use another NSPipe for input is to make NSLog work right instead of logging to the script.

 

 

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运行一个python脚本：

From this page, it looks like there are some some pretty complex threading concerns specific to embedding python. Is there a reason you couldn't just run these scripts in a separate process? For instance, the following -runBunchOfScripts method would run the script ten times (by calling -runPythonScript) on a parallel background queue, collecting the resulting outputs into an array of strings, and then calling your object back on the main thread once all the scripts has completed:

 

- (NSString*)runPythonScript
{
    NSTask* task = [[[NSTask alloc] init] autorelease];
    task.launchPath = @"/usr/bin/python";  
    NSString *scriptPath = [[NSBundle mainBundle] pathForResource:@"MyScript" ofType:@"py"];
    task.arguments = [NSArray arrayWithObjects: scriptPath, nil];

    // NSLog breaks if we don't do this...
    [task setStandardInput: [NSPipe pipe]];

    NSPipe *stdOutPipe = nil;
    stdOutPipe = [NSPipe pipe];
    [task setStandardOutput:stdOutPipe];

    NSPipe* stdErrPipe = nil;
    stdErrPipe = [NSPipe pipe];
    [task setStandardError: stdErrPipe];

    [task launch];        

    NSData* data = [[stdOutPipe fileHandleForReading] readDataToEndOfFile];

    [task waitUntilExit];

    NSInteger exitCode = task.terminationStatus;

    if (exitCode != 0)
    {
        NSLog(@"Error!");
        return nil;
    }

    return [[[NSString alloc] initWithBytes: data.bytes length:data.length encoding: NSUTF8StringEncoding] autorelease];
}

- (void)runBunchOfScripts
{
    dispatch_group_t group = dispatch_group_create();
    NSMutableArray* results = [[NSMutableArray alloc] init];
    for (NSUInteger i = 0; i < 10; i++)
    {
        dispatch_group_async(group, dispatch_get_global_queue(DISPATCH_QUEUE_PRIORITY_DEFAULT, 0), ^{
            NSString* result = [self runPythonScript];
            @synchronized(results)
            {
                [results addObject: result];
            }
        });
    }

    dispatch_group_notify(group, dispatch_get_main_queue(), ^{
        [self scriptsDidFinishWithResults: results];
        dispatch_release(group);
        [results release];
    });
}

- (void)scriptsDidFinishWithResults: (NSArray*)results
{
    NSLog(@"Do something with the results...");
}