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// Copyright Yahoo. Licensed under the terms of the Apache 2.0 license. See LICENSE in the project root.
package com.yahoo.search.grouping.vespa;
/**
* @author Simon Thoresen Hult
*/
class IntegerEncoder {
public static final char[] CHARS = { 'A', 'B', 'C', 'D', 'E', 'F', 'G', 'H',
'I', 'J', 'K', 'L', 'M', 'N', 'O', 'P' };
private final StringBuilder out = new StringBuilder();
public void append(int val) {
val = ((val << 1) ^ (val >> 31));
int cnt = 8;
for (int i = 0; i < 8; ++i) {
if (((val >> (28 - 4 * i)) & 0xF) != 0) {
break;
}
--cnt;
}
out.append(CHARS[cnt]);
for (int i = 8 - cnt; i < 8; ++i) {
out.append(CHARS[(val >> (28 - 4 * i)) & 0xF]);
}
}
@Override
public String toString() {
return out.toString();
}
}
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