Update README.md

README.md

@@ -1,30 +1,26 @@
 # adguardhome-filters
 Hosts lists from Steven Black (https://github.com/StevenBlack/hosts)
 
-	Cleaned-up from "localhost" records.
-	127.0.0.1 replaced to 0.0.0.0
-	Extensions are left unmerged.
+	cleaned-up from "localhost" records;
+	127.0.0.1 and 0.0.0.0 replaced to ||;
+	extensions are left unmerged;
+	left most top-domain only;
 
 Files are used for AdGuard Home DNS filtering.
 
-P.S. Looking for the way to translate easily multiple hostname records
+P.S. Looking for the intellectual algorithm to translate easily multiple hostname records
 to one line accordingly to general AdBlock rules set, i.e.
 
-	www.abc.com
-	abc.com
-	external.www.abc.com.site
+	www1.abc.com
+	extra.abc.com
+	external.www.abc.com
+	pictures.domain.com
+	pictures1.domain.co.nz
+	pic-tures.domain.net.site
 	
 to
 
 	||abc.com*^
+	||domain.*^
 
 or similar.
-
-Need to build the following algorithm:
-1. grab original file;
-2. mirror each string and sort ( like 'cat ./file1 | rev | sort > file2' );
-3. moving down, remember each string and compare it with all the rest, deleting all longer ones ( "moc.cba||" -> delete all "moc.cba\.*" );
-4. revert strings back and sort;
-5. done.
-
-Better to be written in bash/sed/awk or python or Go.