Add @q

lib/aura.rb

@@ -2,6 +2,7 @@
 
 require "aura/helpers"
 require "aura/p"
+require "aura/q"
 require "hoon"
 
 require_relative "aura/version"

lib/aura/q.rb

@@ -0,0 +1,47 @@
+# frozen_string_literal: true
+
+require_relative("helpers")
+require_relative("../hoon")
+require_relative("p")
+
+module Aura
+  # @q
+  module Q
+    extend Helpers
+
+    module_function
+
+    # Convert a number to a @q-encoded string.
+    def self.patq(arg)
+      n = arg.to_i
+      buf = n.to_s(16).scan(/../).map(&:hex)
+      puts buf
+      buf2patq(buf)
+    end
+
+    def self.buf2patq(buf)
+      # Split the buffer into chunks of 2, with a special case for odd-length buffers
+      chunked = if buf.length.odd? && buf.length > 1
+                  [[buf[0]]] + buf[1..-1].each_slice(2).to_a
+                else
+                  buf.each_slice(2).to_a
+                end
+
+      chunked.reduce("~") do |acc, elem|
+        acc + (acc == "~" ? "" : "-") + alg(elem, chunked)
+      end
+    end
+
+    def prefix_name(byts)
+      byts[1].nil? ? prefixes[0] + suffixes[byts[0]] : prefixes[byts[0]] + suffixes[byts[1]]
+    end
+
+    def name(byts)
+      byts[1].nil? ? suffixes[byts[0]] : prefixes[byts[0]] + suffixes[byts[1]]
+    end
+
+    def alg(pair, chunked)
+      pair.length.odd? && chunked.length > 1 ? prefix_name(pair) : name(pair)
+    end
+  end
+end