1 files changed, 66 insertions, 0 deletions
diff --git a/platform/darwin/src/MGLLoggingConfiguration.m b/platform/darwin/src/MGLLoggingConfiguration.m
new file mode 100644
index 0000000000..93f2698287
--- /dev/null
+++ b/platform/darwin/src/MGLLoggingConfiguration.m
@@ -0,0 +1,66 @@
+#import "MGLLoggingConfiguration_Private.h"
+
+#if __has_builtin(__builtin_os_log_format)
+#import <os/log.h>
+#endif
+
+@implementation MGLLoggingConfiguration
+
++ (instancetype)sharedConfiguration
+{
+    static dispatch_once_t once;
+    static id sharedConfiguration;
+    dispatch_once(&once, ^{
+        sharedConfiguration = [[self alloc] init];
+        ((MGLLoggingConfiguration *)sharedConfiguration).handler = nil;
+    });
+    return sharedConfiguration;
+}
+
+- (void)setHandler:(void (^)(MGLLoggingLevel, NSString *, NSUInteger, NSString *))handler {
+    
+    if (!handler) {
+        _handler = [self defaultBlockHandler];
+    } else {
+        _handler = handler;
+    }
+}
+
+- (void)logCallingFunction:(const char *)callingFunction functionLine:(NSUInteger)functionLine messageType:(MGLLoggingLevel)type format:(id)messageFormat, ...
+{
+    va_list formatList;
+    va_start(formatList, messageFormat);
+    NSString *formattedMessage = [[NSString alloc] initWithFormat:messageFormat arguments:formatList];
+    va_end(formatList);
+    
+    _handler(type, @(callingFunction), functionLine, formattedMessage);
+    
+}
+
+- (MGLLoggingBlockHandler)defaultBlockHandler {
+    MGLLoggingBlockHandler mapboxHandler = ^(MGLLoggingLevel level, NSString *fileName, NSUInteger line, NSString *message) {
+        
+        if (@available(iOS 10.0, macOS 10.12.0, *)) {
+            static dispatch_once_t once;
+            static os_log_t mapbox_log;
+            static os_log_type_t log_types[] = { OS_LOG_TYPE_DEFAULT,
+                                                    OS_LOG_TYPE_INFO,
+                                                    OS_LOG_TYPE_DEBUG,
+                                                    OS_LOG_TYPE_ERROR,
+                                                    OS_LOG_TYPE_FAULT };
+            dispatch_once(&once, ^ {
+                mapbox_log = os_log_create("com.mapbox.maps-ios-sdk", "SDK");
+            });
+            NSUInteger logTypesCount = sizeof(log_types) / sizeof(os_log_type_t);
+            NSAssert(level <= logTypesCount, @"There is an attempt to log a non suported logging level.");
+            os_log_type_t logType = log_types[level];
+            os_log_with_type(mapbox_log, logType, "%@ - %d: %@", fileName, line, message);
+        } else {
+            NSLog(@"[SDK] %@ - %lu: %@", fileName, line, message);
+        }
+    };
+    
+    return mapboxHandler;
+}
+
+@end