Cocoa Lumberjack: how to show file and line number?

Question

I am trying to find a way for Cocoa Lumberjack to show me file and line number.

After looking through the docs and some Googling, I found no easy way to do this.

Answer 1

While a separate formatter class would work, it would make your logging code a bit more verbose. In my project I opted for adding some additional macros that make use of CocoaLumberjack like so:

// Prefix.pch file
// ...

#ifdef DEBUG
#define DLogError(fmt, ...) DDLogError((@"%s [Line %d] " fmt), __PRETTY_FUNCTION__, __LINE__, ##__VA_ARGS__)
#define DLogWarn(fmt, ...) DDLogWarn((@"%s [Line %d] " fmt), __PRETTY_FUNCTION__, __LINE__, ##__VA_ARGS__)
#define DLogInfo(fmt, ...) DDLogInfo((@"%s [Line %d] " fmt), __PRETTY_FUNCTION__, __LINE__, ##__VA_ARGS__)
#define DLogDebug(fmt, ...) DDLogDebug((@"%s [Line %d] " fmt), __PRETTY_FUNCTION__, __LINE__, ##__VA_ARGS__)
#define DLogVerbose(fmt, ...) DDLogVerbose((@"%s [Line %d] " fmt), __PRETTY_FUNCTION__, __LINE__, ##__VA_ARGS__)
#else
#define DLogError(fmt, ...)
#define DLogWarn(fmt, ...)
#define DLogInfo(fmt, ...)
#define DLogDebug(fmt, ...)
#define DLogVerbose(fmt, ...)
#endif

In your client code, you could then call:

DLogWarn(@"This is a warning");