Add `DefaultURLHandler`; Get current handler for `mailto` URLs

Add a class to get the current bundle handler for `mailto` URLs. It will
be extended to set CopyMailto as the default handler after saving the
original.

1 files changed, 28 insertions, 0 deletions

diff --git a/CopyMailto/DefaultURLHandler.m b/CopyMailto/DefaultURLHandler.m
new file mode 100644
index 0000000..a8d124f
--- /dev/null
+++ b/CopyMailto/DefaultURLHandler.m
@@ -0,0 +1,28 @@
+//
+//  DefaultURLHandler.m
+//  CopyMailto
+//
+//  Created by tw on 9/5/18.
+//  Copyright © 2018 tw. All rights reserved.
+//
+
+#import "DefaultURLHandler.h"
+
+@implementation DefaultURLHandler
+
+//LSSetDefaultHandlerForURLScheme();
++ (void)saveDefaultURLHandler {
+    CFStringRef mailto = CFStringCreateWithCString(
+        kCFAllocatorDefault,
+        "mailto",
+        kCFStringEncodingUTF8
+    );
+
+    CFStringRef bundle_identifier = LSCopyDefaultHandlerForURLScheme(mailto);
+    NSLog(@"%@", bundle_identifier);
+
+    CFRelease(mailto);
+    CFRelease(bundle_identifier);
+}
+
+@end