called NSLog's function's location in project

Question

I have a big project and there are many NSLog() calls. When something happens some NSLog() works, and I don't know which NSLog get called. How can I find a place where is NSLog() get called in class file?

My NSLog is like this: NSLog(@"%@", someArray);

and here's the log:

2013-04-23 20:43:38.257 myProj[2101:707] {
    id = 1;
    version = 1;
}

What does myProj[2101:707] mean here? Does it give me any information about NSLog function's location in class?

score 6 · Answer 1 · answered Apr 23 '13 at 16:04

6

You could try searching the project for the output.

For instance if the output is

This is my output with values 3.1415 and 1.2345.

press cmdshiftF and search for "This is my output with values"

You can also insert placeholders in the search term:

enter image description here

answered Apr 23 '13 at 16:04

DrummerB

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interested to learn how to insert the pattern into the finder.. can explain a bit more than that.. would appreciate that.. – lakshmen Apr 23 '13 at 16:29
1

Click the magnifying glass icon on the left of the text field – DrummerB Apr 23 '13 at 16:32

Wain · Answer 2 · 2013-04-23T17:17:22.307

1

Convert all of your NSLog usage to DLog and then the log statements will print:

The file name
The method name
The line number

Of every line that is output to the log. In this way you can immediately see where all logging is being done. DLog is a much better logging mechanism to use than NSLog and you should start using it in all your projects.

Define DLog in you pch file as:

#ifdef DEBUG
#   define DLog(fmt, ...) NSLog((@"%s [Line %d] " fmt), __PRETTY_FUNCTION__, __LINE__,  ##__VA_ARGS__);
#else
#   define DLog(...)
#endif

edited Apr 23 '13 at 17:17

answered Apr 23 '13 at 16:08

Wain

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Does this even help to answer the question? DLog can be defined as alternative of NSLog, but it does not help the OP to find out which NSLog is called. – nsgulliver Apr 23 '13 at 16:16
@nsgulliver Actually if OP replaced all NSLogs with DLogs, he would find the call he is looking for. – DrummerB Apr 23 '13 at 16:23
@nsgulliver I've updated the answer to make it more clear how DLog is a good solution. – Wain Apr 23 '13 at 17:18
@Wain that's much better +1. – nsgulliver Apr 23 '13 at 17:21

score 0 · Answer 3 · edited May 23 '17 at 12:07

0

You can use the function class_getName to get the class name of the object your log statement is placed and include the class name in NSLog().

Like this:

#import <objc/runtime.h>
…
NSLog("%@ Some Log Statement", class_getName([self class]));

edited May 23 '17 at 12:07

Community

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1

answered Apr 23 '13 at 16:06

David

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That's a good point for the future, but I guess OP has a hard time locating the right NSLog statement in the first place. – DrummerB Apr 23 '13 at 16:08

called NSLog's function's location in project

3 Answers3