I started to build an IOS app with the new programming language Swift. I managed to use CocoaPods and was able to successfully create the DDTTYLogger with my CustomLoggerFormatter (Objective-C) in my AppDelegate.swift and append it to the loggers.
var customLoggerFormatter = CustomLoggerFormatter()
var consoleLogger: DDTTYLogger = DDTTYLogger.sharedInstance()
consoleLogger.setLogFormatter(customLoggerFormatter)
DDLog.addLogger(consoleLogger)
But the problem is, that the CocoaLumberjack Library is using preprocessor macros for the logger methods like DDLogVerbose(@"..")
Which is defined in the DDLog.h:
#define DDLogVerbose(frmt, ...) LOG_OBJC_MAYBE(LOG_ASYNC_VERBOSE, LOG_LEVEL_DEF, LOG_FLAG_VERBOSE, 0, frmt, ##__VA_ARGS__)
Is there any workaround to make preprocessor defines work in Swift? Or did anyone try something similar with more success?
Okay, I just found a solution. Writing an Objective-C Wrapper class calling the preprocessors and offering methods to call it.
Hopefully this will help other people facing the same issues.
I first created a header file:
@interface DDLogWrapper : NSObject
+ (void) logVerbose:(NSString *)message;
+ (void) logError:(NSString *)message;
+ (void) logInfo:(NSString *)message;
@end
With the corresponding implementation:
#import <Foundation/Foundation.h>
#import "DDLogWrapper.h"
// Logging Framework Lumberjack
#import "DDLog.h"
#import "DDASLLogger.h"
#import "DDTTYLogger.h"
// Definition of the current log level
#ifdef DEBUG
static const int ddLogLevel = LOG_LEVEL_VERBOSE;
#else
static const int ddLogLevel = LOG_LEVEL_ERROR;
#endif
@implementation DDLogWrapper
+ (void) logVerbose:(NSString *)message {
DDLogVerbose(message);
}
+ (void) logError:(NSString *)message {
DDLogError(message);
}
+ (void) logInfo:(NSString *)message {
DDLogInfo(message);
}
@end
Important is to add the DDLogWrapper.h File to the ProjectName-Bridging-Header.h file and then you are able to instantiate in Swift the DDLogWrapper and call the methods logVerbose, logError, logInfo.
.
With the following code I was able to make a log statement:
DDLogWrapper.logVerbose("TEST");
I created a Swift wrapper for CocoaLumberjack that encapsulates everything nicely.
DDLog.addLogger(DDTTYLogger.sharedInstance())
DDLog.logLevel = .Info
logInfo("Info")
logWarn("Warn")
logDebug("Debug")
logError("Error")
As of 2.0.0beta4
, CocoaLumberJack includes a CocoaLumberJack.swift
file that makes its integration with Swift projects really easily.
They use a global var defaultDebugLevel
to set the DDLogLevel
, and you can swift basic precompile macros to customize it to your needs.
#if DEBUG
defaultDebugLevel = DDLogLevel.All
#else
defaultDebugLevel = DDLogLevel.Warning
#endif
DDLog.addLogger(DDTTYLogger.sharedInstance())
DDLogDebug("Debug")
DDLogInfo("Info")
DDLogWarn("Warning")
DDLogVerbose("Verbose")
DDLogError("Error")
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