Logging configuration header for global/local levels in CocoaLumberjack (2.0.0)

DSLogging.h

//
//  Created by DanSkeel on 23.04.15.

#import "CocoaLumberjack.h"

#define DS_LogScopeGlobal extern
#define DS_LogScopeLocal static
#define DS_LogMutableYes
#define DS_LogMutableNo const

#define DS_LogValueGlobal ;
#define DS_LogValueLocal(lvl) = lvl

#define DS_Setup_Log(scope, mutablility, value) scope mutablility DDLogLevel ddLogLevel value

/** To setup loggin enviroment for particular file use one of these macros
 *
 *  @note Use CocoaLumberjack as usual (https://github.com/CocoaLumberjack/CocoaLumberjack/blob/master/Documentation/GettingStarted.md):
 *
 *  1. just import DSLoggin.h in source file instead of CocoaLumberjack.h
 *
 *  2. Use one of these macros to setup loggin enviroment for the file.
 *  Note: there should one of these macros in EACH file that uses CocoaLumberjack macroses.
 *  @example To enable logging for file with globally defined level you can make convinient snippet:
 *  @code
 *  #import "DSLogging.h"
 *  DSLogLevelSetupGlobal
 *  @endcode
 * 
 *  Use @b SetupGlobal to setup files that will use global level from @p DSLogging.m file
 *
 *  Use @b SetupMutableGlobal to be able to change global level at runtime (assign new level to ddLogLevel variable)
 *
 *  Use @b Setup(DDLogLevel) to set local log level
 *
 *  Use @b SetupMutable(DDLogLevel) to be able to modify local level at runtime ((assign new level to ddLogLevel variable))
 *
 *  This approach preserves a lot of CocoaLumberjack advantages. See SO http://stackoverflow.com/a/29837945/991816
 *
 *  @remarks details: these macros just help you define/reference ddLogLevel value. So if you
 *  see warning about <i> undeclared identifier </i> it should remind you to use one of these macros in this file.
 */
extern char optionClickMeToSeePrettyDoc;
#define DSLogLevelSetupMutableGlobal DS_Setup_Log(DS_LogScopeGlobal, DS_LogMutableYes, DS_LogValueGlobal)
#define DSLogLevelSetupGlobal        DS_Setup_Log(DS_LogScopeGlobal, DS_LogMutableNo,  DS_LogValueGlobal)
#define DSLogLevelSetupMutable(lvl)  DS_Setup_Log(DS_LogScopeLocal,  DS_LogMutableYes, DS_LogValueLocal(lvl))
#define DSLogLevelSetup(lvl)         DS_Setup_Log(DS_LogScopeLocal,  DS_LogMutableNo,  DS_LogValueLocal(lvl))

DSLogging.m

//
//  Created by DanSkeel on 23.04.15.

#import "DSLogging.h"

DDLogLevel ddLogLevel = DDLogLevelVerbose;