我是ios /
swift的新手.我想使用asl.h中的日志记录c函数
在swift文件中.任何人?我用Google搜索,人们似乎都在编写自己的日志快速类.没有不尊重,但我想使用asl.
也就是说,斯威夫特不喜欢
#include< asl.h>并且它不喜欢我只是调用asl_log(NULL,NULL,ASL_LEVEL_INFO,“Hello World!”);
在swift文件中.任何人?我用Google搜索,人们似乎都在编写自己的日志快速类.没有不尊重,但我想使用asl.
也就是说,斯威夫特不喜欢
#include< asl.h>并且它不喜欢我只是调用asl_log(NULL,NULL,ASL_LEVEL_INFO,“Hello World!”);
谢谢,在
http://doing-it-wrong.mikeweller.com/2012/07/youre-doing-it-wrong-1-nslogdebug-ios.html的帮助下,我做了以下修改:
// // BRASL.h // #ifndef BRASL_h #define BRASL_h #import <asl.h> #import <Foundation/Foundation.h> // Define which loglevel is necessary for deployment and development // ================================================================= // Used to conditionally implement the log functions. All log // functions are defined so the compiler does not complain. But only // those logfunctions that are used will contain code. // ================================================================= #ifndef BRASL_LOG_LEVEL // DEBUG is set in the project build-settings #if DEBUG == 1 // Set logging level for development #define BRASL_LOG_LEVEL ASL_LEVEL_DEBUG #else // Set logging level for deployment #define BRASL_LOG_LEVEL ASL_LEVEL_NOTICE #endif #endif // Define the log functions // ======================== void aslEmergency(NSString *string); void aslAlert(NSString *string); void aslCritical(NSString *string); void aslError(NSString *string); void aslWarning(NSString *string); void aslNotice(NSString *string); void aslInfo(NSString *string); void aslDebug(NSString *string); #endif
// // BRASL.h // #import "BRASL.h" // We need this to set asl up to also write the information to the debugger // ======================================================================== static void AddStderrOnce() { static dispatch_once_t onceToken; dispatch_once(&onceToken,^{ asl_add_log_file(NULL,STDERR_FILENO); }); } // Implement the log functions where necessary // =========================================== #if BRASL_LOG_LEVEL >= ASL_LEVEL_EMERG void aslEmergency(NSString *string) { AddStderrOnce(); asl_log(NULL,ASL_LEVEL_EMERG,"%s",[string UTF8String]); } #else void aslEmergency(NSString *string) {} #endif #if BRASL_LOG_LEVEL >= ASL_LEVEL_ALERT void aslAlert(NSString *string) { AddStderrOnce(); asl_log(NULL,ASL_LEVEL_ALERT,[string UTF8String]); } #else void aslAlert(NSString *string) {} #endif #if BRASL_LOG_LEVEL >= ASL_LEVEL_CRIT void aslCritical(NSString *string) { AddStderrOnce(); asl_log(NULL,ASL_LEVEL_CRIT,[string UTF8String]); } #else void aslCritical(NSString *string) {} #endif #if BRASL_LOG_LEVEL >= ASL_LEVEL_ERR void aslError(NSString *string) { AddStderrOnce(); asl_log(NULL,ASL_LEVEL_ERR,[string UTF8String]); } #else void aslError(NSString *string) {} #endif #if BRASL_LOG_LEVEL >= ASL_LEVEL_WARNING void aslWarning(NSString *string) { AddStderrOnce(); asl_log(NULL,ASL_LEVEL_WARNING,[string UTF8String]); } #else void aslWarning(NSString *string) {} #endif #if BRASL_LOG_LEVEL >= ASL_LEVEL_NOTICE void aslNotice(NSString *string) { AddStderrOnce(); asl_log(NULL,ASL_LEVEL_NOTICE,[string UTF8String]); } #else void aslNotice(NSString *string) {} #endif #if BRASL_LOG_LEVEL >= ASL_LEVEL_INFO void aslInfo(NSString *string) { AddStderrOnce(); asl_log(NULL,[string UTF8String]); } #else void aslInfo(NSString *string) {} #endif #if BRASL_LOG_LEVEL >= ASL_LEVEL_DEBUG void aslDebug(NSString *string) { AddStderrOnce(); asl_log(NULL,ASL_LEVEL_DEBUG,[string UTF8String]); } #else void aslDebug(NSString *string) {} #endif
当然还有桥接文件
// // Use this file to import your target's public headers that you would like to expose to Swift. // #import "BRASL.h"
aslInfo("Initializing managed object context")
到目前为止这么好,似乎像宣传的那样工作:)