Higher level file read/write with Objective-C

Question

As Objective-C is superset of C, I guess I can use fopen/fread/fwrite/fprint... just like I do with C.

Does that mean that Objective-C doesn't have its unique file processing function?

Does this link help out? http://www.cocoabuilder.com/archive/cocoa/199087-file-processing-with-obj-cocoa.html — Dbz, Feb 27 '11 at 23:23

score 3 · Accepted Answer · 2013-02-08T17:04:54.733

3

Objective-C doesn't have file handling, nor does C. However, the C Standard Library does. And if you want to use Objective-C, you can use the C Standard Library.

Objective-C is mostly used with Foundation, so -[NSData writeToURL:atomically:] and -[NSString writeToURL:atomically:encoding:error:] can be used if you link to the Foundation framework.

For reading files the methods are -[NSData initWithContentsOfURL:options:error:] and -[NSString initWithContentsOfURL:encoding:error:].

edited Feb 08 '13 at 17:04

answered Feb 27 '11 at 23:29

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+1: People do tend to forget Objective-C is framework independent. – v1Axvw Feb 27 '11 at 23:36
You might wanna add NSFileHandle to your answer as well, since it's more analogous to the stdio functions the OP asked about. – Jason Coco Mar 01 '11 at 15:34

score 0 · Answer 2 · answered Feb 27 '11 at 23:23

0

Look at the NSFileManager and NSFileHandle classes for a start. Many other classes, such as NSData, also have methods to read data from a file and write data to a file.

answered Feb 27 '11 at 23:23

Anomie

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score 0 · Answer 3 · answered Feb 27 '11 at 23:23

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initWithContentsOfFile:error:

initWithContentsOfURL:error:

writeToFile:atomically:

writeToURL:atomically:

and so on, NSData NSString NSImage and so on all support these methods

answered Feb 27 '11 at 23:23

Antwan van Houdt

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Higher level file read/write with Objective-C

3 Answers3