Epub阅读器0.0.1

2026-05-21 19:40:51 +08:00
commit daa36d8fe7
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+//
+//  DTLog.m
+//  DTFoundation
+//
+//  Created by Oliver Drobnik on 06.08.13.
+//  Copyright (c) 2013 Cocoanetics. All rights reserved.
+//
+
+#import "DTLog.h"
+#import <asl.h>
+#import <Availability.h>
+
+DTLogLevel DTCurrentLogLevel = DTLogLevelInfo;
+
+#if TARGET_OS_IPHONE
+#if __IPHONE_OS_VERSION_MIN_REQUIRED > __IPHONE_6_1 && __IPHONE_OS_VERSION_MAX_ALLOWED > __IPHONE_7_1
+#define DTLOG_USE_NEW_ASL_METHODS 1
+#endif
+#else
+#if __MAC_OS_X_VERSION_MIN_REQUIRED > __MAC_10_9
+#define DTLOG_USE_NEW_ASL_METHODS 1
+#endif
+#endif
+
+#if DEBUG
+
+// set default handler for debug mode
+DTLogBlock DTLogHandler = ^(NSUInteger logLevel, NSString *fileName, NSUInteger lineNumber, NSString *methodName, NSString *format, ...)
+{
+	va_list args;
+	va_start(args, format);
+	
+	DTLogMessagev(logLevel, format, args);
+	
+	va_end(args);
+};
+
+#else
+
+// set no default handler for non-DEBUG mode
+DTLogBlock DTLogHandler = NULL;
+
+#endif
+
+#pragma mark - Logging Functions
+
+void DTLogSetLoggerBlock(DTLogBlock handler)
+{
+	DTLogHandler = [handler copy];
+}
+
+void DTLogSetLogLevel(DTLogLevel logLevel)
+{
+	DTCurrentLogLevel = logLevel;
+}
+
+void DTLogMessagev(DTLogLevel logLevel, NSString *format, va_list args)
+{
+	NSString *facility = [[NSBundle mainBundle] bundleIdentifier];
+	aslclient client = asl_open(NULL, [facility UTF8String], ASL_OPT_STDERR); // also log to stderr
+	
+	aslmsg msg = asl_new(ASL_TYPE_MSG);
+	asl_set(msg, ASL_KEY_READ_UID, "-1");  // without this the message cannot be found by asl_search
+	
+	// convert to via NSString, since printf does not know %@
+	NSString *message = [[NSString alloc] initWithFormat:format arguments:args];
+	
+	asl_log(client, msg, (int)logLevel, "%s", [message UTF8String]);
+
+	asl_free(msg);
+	
+	va_end(args);
+}
+
+void DTLogMessage(DTLogLevel logLevel, NSString *format, ...)
+{
+	va_list args;
+	va_start(args, format);
+	
+	DTLogMessagev(logLevel, format, args);
+	
+	va_end(args);
+}
+
+NSArray *DTLogGetMessages(void)
+{
+	aslmsg query, message;
+	int index;
+	const char *key, *val;
+	
+	NSString *facility = [[NSBundle mainBundle] bundleIdentifier];
+	
+	query = asl_new(ASL_TYPE_QUERY);
+	
+	// search only for current app messages
+	asl_set_query(query, ASL_KEY_FACILITY, [facility UTF8String], ASL_QUERY_OP_EQUAL);
+	
+	aslresponse response = asl_search(NULL, query);
+	
+	NSMutableArray *tmpArray = [NSMutableArray array];
+	
+#if DTLOG_USE_NEW_ASL_METHODS
+	while ((message = asl_next(response)))
+#else
+	while ((message = aslresponse_next(response)))
+#endif
+	{
+		NSMutableDictionary *tmpDict = [NSMutableDictionary dictionary];
+		
+		for (index = 0; ((key = asl_key(message, index))); index++)
+		{
+			NSString *keyString = [NSString stringWithUTF8String:(char *)key];
+			
+			val = asl_get(message, key);
+			
+			NSString *string = val?[NSString stringWithUTF8String:val]:@"";
+            tmpDict[keyString] = string;
+		}
+		
+		[tmpArray addObject:tmpDict];
+	}
+	
+	asl_free(query);
+#if DTLOG_USE_NEW_ASL_METHODS
+	asl_release(response);
+#else
+	aslresponse_free(response);
+#endif
+	
+	if ([tmpArray count])
+	{
+		return [tmpArray copy];
+	}
+	
+	return nil;
+}