NSTask setArguments issue

[truehybridx]

hi guys the basic idea of what im trying to do is build a tiny lil app that uses scp to copy over an .app folder onto my device. theres probably apps already like this but for the sake of learning how, i want to make one lol

on my app i have 3 textfields
App Path - for the location on my comp
Remote IP - the iphones "root@ip" combo
Remote Location - the folder i want to copy the stuff over to

the argument line i use in junction with scp is:

[scp setArguments:[NSArray arrayWithObjects:@"-r", [appPath stringValue],
					 [phoneIp stringValue], [phonePath stringValue], nil]];

which if im doing it right should be

scp -r ~/myapp.app root@10.0.2.3:/Applications/

but its not doing it that way, it uploads to the phone.. i just dont know where..

also i want to include a respring and reboot option to, so i would need the phoneIP just be the bare root@ip without the colon

[_sjc_]

Originally Posted by truehybridx

[scp setArguments:[NSArray arrayWithObjects:@"-r", [appPath stringValue],
					 [phoneIp stringValue], [phonePath stringValue], nil]];

I think this is passing the IP and path as two separate arguments, separated by a space. Try combining them into a single param, eg.

[scp setArguments:[NSArray arrayWithObjects:@"-r", [appPath stringValue],
    [NSString stringWithFormat: @"%@%@", [phoneIp stringValue], [phonePath stringValue]],
    nil]];

[truehybridx]

soo exactly what does %@%@ do?
THANKS by the way, it worked!!

[_sjc_]

Originally Posted by truehybridx

soo exactly what does %@%@ do?

%@ inserts the description of an object into a string. If you're familiar with printf() and similar, you'll recognise %i, %d, %s and so on. %@ is a Foundation-specific extension. In this case, you're inserting the description of a couple of NSString objects, where their description is just their string value. If the objects were NSNumbers this would insert their number values; if they were collections (NSArray, NSDicitionary, NSSet, etc,.) it would insert the description of every object they contain.

[truehybridx]

ok im kinda understanding it lol

is there a NSString version of substring? id like to set my app to use only one local path field..

in example:

Path = /var/mobile/myapp.app/myapp

something that returns /var/mobile/myapp.app
with the subtraction of /myapp from the original path name

[_sjc_]

Yep, there are NSString methods for substring (eg. –substringWithRange:, -substringFromIndex: and –substringToIndex: ), but to do what you quoted you may want to look at -stringByDeletingLastPathComponent, which is one of the filepath-specific manipulation methods. Take a look at the NSString docs. It's a large class with lots and lots of functionality.