DebugLog

DebugLog - Example

// Example Usage

- (void)exampleMethod
{
  DebugMethod(self, _cmd);   // _cmd refers to the selector for the method you're in
  
  DebugLog(@"This message will only be logged on DEBUG");
}

DebugLog.h

/*
 *  DebugLog.m
 *
 *  Created by Karl Kraft on 3/22/09.
 *  http://www.karlkraft.com
 *
 *  "DebugMethod" added by Joshua Greene (jrg.developer@gmail.com)
 *
 */

#ifdef DEBUG

#define DebugLog(args...) _DebugLog(__FILE__,__LINE__,__PRETTY_FUNCTION__,args)
#define DebugMethod(class, selector) _DebugMethod(class, selector)

#else

#define DebugLog(x...)
#define DebugMethod(x...)

#endif

void _DebugLog(const char *file, int lineNumber, const char *funcName, NSString *format,...);
void _DebugMethod(NSObject *object, SEL selector);

DebugLog.m

/*
 *  DebugLog.m
 *
 *  Created by Karl Kraft on 3/22/09.
 *  http://www.karlkraft.com
 *
 *  "DebugMethod" added by Joshua Greene (jrg.developer@gmail.com)
 *
 */

#include "DebugLog.h"

void _DebugLog(const char *file, int lineNumber, const char *funcName, NSString *format,...) {
  va_list ap;
	
  va_start (ap, format);
  if (![format hasSuffix: @"\n"]) {
    format = [format stringByAppendingString: @"\n"];
	}
	NSString *body =  [[NSString alloc] initWithFormat: format arguments: ap];
	va_end (ap);
	const char *threadName = [[[NSThread currentThread] name] UTF8String];
  NSString *fileName=[[NSString stringWithUTF8String:file] lastPathComponent];
	if (threadName) {
		fprintf(stderr,"%s/%s (%s:%d) %s",threadName,funcName,[fileName UTF8String],lineNumber,[body UTF8String]);
	} else {
		fprintf(stderr,"%p/%s (%s:%d) %s",[NSThread currentThread],funcName,[fileName UTF8String],lineNumber,[body UTF8String]);
	}
}

void _DebugMethod(NSObject *object, SEL selector) {
    DebugLog(@"Running %@ '%@'", object, NSStringFromSelector(selector));
}