自定义 NSLog以便发版和调试

void ExtendNSLog(const char *file, int lineNumber, const char *functionName, NSString *format, ...);

 1 void ExtendNSLog(const char *file, int lineNumber, const char *functionName, NSString *format, ...) {
 2 
 3     va_list ap;
 4 
 5     va_start(ap, format);
 6 
 7     if (![format hasSuffix: @"\n"]) {
 8         format = [format stringByAppendingString: @"\n"];
 9     }
10 
11     NSString *body = [[NSString alloc] initWithFormat:format arguments:ap];
12 
13     va_end(ap);
14 
15     NSString *fileName = [[NSString stringWithUTF8String:file] lastPathComponent];
16     fprintf(stderr, "(%s) (%s:%d) %s",
17             functionName,
18             [fileName UTF8String],
19             lineNumber,
20             [body UTF8String]);
21 }

 1 #ifdef __OBJC__
 2 
 3 #import <UIKit/UIKit.h>
 4 #import <Foundation/Foundation.h>
 5 
 6 #import "ExtendNSLog.h"
 7 
 8 #ifdef DEBUG
 9 #define NSLog(args...) ExtendNSLog(__FILE__, __LINE__, __PRETTY_FUNCTION__, args);
10 #else
11 #define NSLog(x...)
12 #endif
13 
14 #endif