/Volumes/Plantain/MyDocuments/Projects/MacTrek/MacTrek/Luky/System/TaskWrapper.h

00001 /*
00002  File:          TaskWrapper.h
00003 
00004  Description:   This class is a generalized process handling class that makes asynchronous interaction with an NSTask easier.  There is also a protocol designed to work in conjunction with the TaskWrapper class; your process controller should conform to this protocol.  TaskWrapper objects are one-shot (since NSTask is one-shot); if you need to run a task more than once, destroy/create new TaskWrapper objects.
00005 
00006  Author:                EP & MCF
00007 
00008  Copyright:     © Copyright 2002 Apple Computer, Inc. All rights reserved.
00009 
00010  Disclaimer:    IMPORTANT:  This Apple software is supplied to you by Apple Computer, Inc.
00011  ("Apple") in consideration of your agreement to the following terms, and your
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00013  constitutes acceptance of these terms.  If you do not agree with these terms,
00014  please do not use, install, modify or redistribute this Apple software.
00015 
00016  In consideration of your agreement to abide by the following terms, and subject
00017  to these terms, Apple grants you a personal, non-exclusive license, under AppleÕs
00018  copyrights in this original Apple software (the "Apple Software"), to use,
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00020  modifications, in source and/or binary forms; provided that if you redistribute
00021  the Apple Software in its entirety and without modifications, you must retain
00022  this notice and the following text and disclaimers in all such redistributions of
00023  the Apple Software.  Neither the name, trademarks, service marks or logos of
00024  Apple Computer, Inc. may be used to endorse or promote products derived from the
00025  Apple Software without specific prior written permission from Apple.  Except as
00026  expressly stated in this notice, no other rights or licenses, express or implied,
00027  are granted by Apple herein, including but not limited to any patent rights that
00028  may be infringed by your derivative works or by other works in which the Apple
00029  Software may be incorporated.
00030 
00031  The Apple Software is provided by Apple on an "AS IS" basis.  APPLE MAKES NO
00032  WARRANTIES, EXPRESS OR IMPLIED, INCLUDING WITHOUT LIMITATION THE IMPLIED
00033  WARRANTIES OF NON-INFRINGEMENT, MERCHANTABILITY AND FITNESS FOR A PARTICULAR
00034  PURPOSE, REGARDING THE APPLE SOFTWARE OR ITS USE AND OPERATION ALONE OR IN
00035  COMBINATION WITH YOUR PRODUCTS.
00036 
00037  IN NO EVENT SHALL APPLE BE LIABLE FOR ANY SPECIAL, INDIRECT, INCIDENTAL OR
00038  CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE
00039                         GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
00040  ARISING IN ANY WAY OUT OF THE USE, REPRODUCTION, MODIFICATION AND/OR DISTRIBUTION
00041  OF THE APPLE SOFTWARE, HOWEVER CAUSED AND WHETHER UNDER THEORY OF CONTRACT, TORT
00042  (INCLUDING NEGLIGENCE), STRICT LIABILITY OR OTHERWISE, EVEN IF APPLE HAS BEEN
00043  ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
00044 
00045  */
00046 
00047 
00048 #import <Foundation/Foundation.h>
00049 
00050 @protocol TaskWrapperController
00051 
00052 // Your controller's implementation of this method will be called when output arrives from the NSTask.
00053 // Output will come from both stdout and stderr, per the TaskWrapper implementation.
00054 - (void)appendOutput:(NSString *)output fromTask:(id) task;
00055 
00056 // This method is a callback which your controller can use to do other initialization when a process
00057 // is launched.
00058 - (void)processStarted:(id)task;
00059 
00060 // This method is a callback which your controller can use to do other cleanup when a process
00061 // is halted.
00062 - (void)processFinished:(id)task;
00063 
00064 @end
00065 
00066 @interface TaskWrapper : NSObject {
00067     NSTask                      *task;
00068     id                          <TaskWrapperController>controller;
00069     NSArray                     *arguments;
00070 }
00071 
00072 // This is the designated initializer - pass in your controller and any task arguments.
00073 // The first argument should be the path to the executable to launch with the NSTask.
00074 - (id)initWithController:(id <TaskWrapperController>)controller arguments:(NSArray *)args;
00075 
00076 // This method launches the process, setting up asynchronous feedback notifications.
00077 - (void) startProcess;
00078 
00079 // This method stops the process, stoping asynchronous feedback notifications.
00080 - (void) stopProcess;
00081 
00082 @end
00083 

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