Data commit

Task/Variable-length-quantity/Groovy/variable-length-quantity-1.groovy

@@ -0,0 +1,16 @@
+final RADIX = 7
+final MASK = 2**RADIX - 1
+
+def octetify = { n ->
+    def octets = []
+    for (def i = n; i != 0; i >>>= RADIX) {
+        octets << ((byte)((i & MASK) + (octets.empty ? 0 : MASK + 1)))
+    }
+    octets.reverse()
+}
+
+def deoctetify = { octets ->
+    octets.inject(0) { long n, octet ->
+        (n << RADIX) + ((int)(octet) & MASK)
+    }
+}

Task/Variable-length-quantity/Groovy/variable-length-quantity-2.groovy

@@ -0,0 +1,8 @@
+def testNumbers = [ 0x200000, 0x1fffff, 1, 127, 128, 589723405834L ]
+
+testNumbers.each { a ->
+    def octets = octetify(a)
+    octets.each { printf "0x%02x ", it }; println ()
+    def a1 = deoctetify(octets)
+    assert a1 == a
+}