nuts

exDB(func(db *bolt.DB) {
	insert := func(path string) {
		if err := db.Update(func(tx *bolt.Tx) error {
			b, err := tx.CreateBucketIfNotExists(bucketName)
			if err != nil {
				return err
			}

			// Check for conflicts.
			if k, _ := SeekPathConflict(b.Cursor(), []byte(path)); k != nil {
				fmt.Printf("Put(%s) blocked - conflict: %s\n", path, string(k))
				return nil
			}

			// Put.
			if err := b.Put([]byte(path), []byte{}); err != nil {
				return err
			}
			fmt.Printf("Put(%s)\n", path)
			return nil
		}); err != nil {
			log.Fatal(err)
		}
	}
	// Put
	insert("/blogs/")
	// Put
	insert("/blogs/:blog_id")
	// Conflict
	insert("/blogs/a_blog")
})

Output:
Put(/blogs/)
Put(/blogs/:blog_id)
Put(/blogs/a_blog) blocked - conflict: /blogs/:blog_id

exDB(func(db *bolt.DB) {
	if err := db.Update(func(tx *bolt.Tx) error {
		b, err := tx.CreateBucket(bucketName)
		if err != nil {
			return err
		}

		// Put a variable path.
		return b.Put([]byte("/blogs/:blog_id/comments/:comment_id"), []byte{})
	}); err != nil {
		log.Fatal(err)
	}

	if err := db.View(func(tx *bolt.Tx) error {
		b := tx.Bucket(bucketName)

		// Match path.
		path, _ := SeekPathMatch(b.Cursor(), []byte("/blogs/asdf/comments/42"))
		fmt.Println(string(path))

		return nil
	}); err != nil {
		log.Fatal(err)
	}
})

Output:
/blogs/:blog_id/comments/:comment_id