How to tracks all calls to NSLog(), Swift print() and other print-family functions in swift

Question

Here i want track all NSLog(), Swift print() and other print-family functions.

Means i want to track all log print on debugging window in xcode and save to local storage.

I have tried with macro and this is my code but not worked for me.

#ifdef DEBUG
#define NSLog(args...) ExtendNSLog(__FILE__,__LINE__,__PRETTY_FUNCTION__,args)
#else
#define NSLog(x...)
#endif

void _Log(NSString *prefix, const char *file, int lineNumber, const char *funcName, NSString *format,...);

Now i want everytime NSLog() print anything it will call this method and than i store it into one file simple.

If you want more details please ask.

Thank you in advance.

Possibly helpful: https://stackoverflow.com/q/41680004/1187415, https://stackoverflow.com/q/36916772/1187415 — Martin R, Feb 06 '20 at 11:55
Check this too: https://stackoverflow.com/questions/39026752/swift-extending-functionality-of-print-function — Keshu R., Feb 06 '20 at 12:00

score 1 · Answer 1 · answered Feb 06 '20 at 12:07

1

Add this to any .swift file in your project. This function will be called everytime print() is called in your project.

public func print(_ items: Any...) {
    #if DEBUG
        Swift.print(items)
        // append items to your file here
    #else
        Swift.print("Release")
    #endif
}

answered Feb 06 '20 at 12:07

Keshu R.

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This is custom print fucntion i want to override NSLog() when ever we used NSLog() it will call my method in whole app not only in particular view. – Hardik Vyas Feb 06 '20 at 12:14
@HardikVyas this will be called in whole app. declare this function globally. just copy paste it in your Project and put a breakpoint inside. You will find out. – Keshu R. Feb 06 '20 at 12:16
can we do same for NSLog() ?? – Hardik Vyas Feb 06 '20 at 12:17
@HardikVyas no idea. Your question asked for Swift print(), so I answered for it. – Keshu R. Feb 06 '20 at 12:20
@KeshuR.: The question asked for *“NSLog(), Swift print() and other print-family functions”* – Martin R Feb 06 '20 at 12:21
@MartinR right. I had an answer for Swift print(), so I added as it might be helpful. If it is not, I may remove. – Keshu R. Feb 06 '20 at 12:23
@MartinR Right I want every log which is print on debugging window. – Hardik Vyas Feb 06 '20 at 12:54

How to tracks all calls to NSLog(), Swift print() and other print-family functions in swift

1 Answers1