Quote from Forum Archives on November 28, 2010, 3:29 pm

Posted by: artlythere <artlythere@...>

I don't know if the below is any clue or help.

From reading, says can't gzip a folder (not sure you are doing that) have to .tar it first (using ditto)

Another place says avoid using NSTask for zipping, since it is resource intensive, use a method.

http://cocoadev.com/forums/comments.php?DiscussionID=1119

Some mentioned creating a pipe. I don't know if the below example is any help for whatyou are trying to do.

Here's a handy article perhaps. 

http://www.cocoabuilder.com/archive/cocoa/288631-ok-break-it-down-for-me-question-about-gzip.html

www.cocoabuilder.com/archive/cocoa/42510-nstask-interaction.html

=== cut here ===

    NSTask *task=[[NSTask alloc] init];

    NSPipe *opipe=[NSPipe pipe];

    NSFileHandle *output=[opipe fileHandleForReading];

    [task setLaunchPath:...];

    [task setArguments:...];

    [task setStandardOutput:opipe];

    [[NSNotificationCenter defaultCenter] addObserver:self

selector:@selector(gotData:) name:NSFileHandleDataAvailableNotification

object:output]; // async read

    [output waitForDataInBackgroundAndNotify];

    ...

    [task launch];

    [task waitUntilExit];

=== cut here ===

rc

On Nov 28, 2010, at 1:46 PM, Bernie wrote:

I wrote:

Have used NSTask to execute Terminal commands before but having trouble with gzip. I'm guessing my arguments are not set up correctly. Anyone see what's wrong in this example?

< code snip >

'ditto' works:

'---------------

include "Util_FileDirectory.incl"

BeginCFunction

void ZipFile( CFStringRef inPath )

{

 NSAutoreleasePool *pool = [[NSAutoreleasePool alloc] init];

 NSTask *task = [[[NSTask alloc] init] autorelease];

 [task setLaunchPath:@"/usr/bin/ditto"];

NSString *outPath = [(NSString *)inPath stringByAppendingString:@".zip"];

 [task setArguments:[NSArray arrayWithObjects:@"-c",(NSString *)inPath,outPath,nil]];

 [task waitUntilExit];

 [task launch];

 [pool drain];

}

EndC

toolbox ZipFile( CFStringRef inPath )

dim as FSRef ref

dim as CFStringRef path

long if ( files$( _FSRefOpen,,, ref ) )

fn FD_FSRefCreatePath( @ref, @path )

ZipFile( path )

CFRelease( path )

end if

RunApplicationEventLoop()

'---------------

Would still like to know why gzip doesn't work with NSTask (anyone?).

Bernie

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