Re: How to write a string to a file

[Adam R. Maxwell]

On Aug 18, 2008, at 8:00 PM, David wrote:

I know it sounds like a basic question, but I've looked and it doesn't seem

as obvious to me as it should.
I want to write out data to a file to describe my tree structure.




string because it might get quite large.

How are you supposed to do this in Cocoa? Why isn't it more obvious?



NSString doesn't have a method to append to a file, nor a stream, nor
NSData.
And the other classes don't have a method to accept a string.

I'd like to have a method which appends a string to the end of a text file. I don't really want to store everything in memory and write out one big I've looked in NSString, NSData, NSFileHandle, NSOutputStream, but I don't see a simple way to append a string to a file. Can it really be this hard?

NSString *string = @"string";
NSFileHandle *fh = [NSFileHandle fileHandleForWritingAtPath:pathToFile];
[fh seekToEndOfFile];
[fh writeData:[string dataUsingEncoding:NSUTF8StringEncoding]];
[fh closeFile];

You could easily wrap this up in an NSString category if needed.

--
Adam

You were pretty close to a solution, I think. Here's how I'd do it (typed in Mail, may not compile, etc.):

smime.p7s
Description: S/MIME cryptographic signature

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