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package org.apache.lucene.benchmark.byTask.utils;
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* Licensed to the Apache Software Foundation (ASF) under one or more
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* contributor license agreements. See the NOTICE file distributed with
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* this work for additional information regarding copyright ownership.
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* The ASF licenses this file to You under the Apache License, Version 2.0
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* (the "License"); you may not use this file except in compliance with
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* the License. You may obtain a copy of the License at
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* http://www.apache.org/licenses/LICENSE-2.0
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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import java.text.NumberFormat;
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* Formatting utilities (for reports).
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private static NumberFormat numFormat [] = {
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NumberFormat.getInstance(),
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NumberFormat.getInstance(),
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NumberFormat.getInstance(),
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private static final String padd = " ";
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numFormat[0].setMaximumFractionDigits(0);
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numFormat[0].setMinimumFractionDigits(0);
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numFormat[1].setMaximumFractionDigits(1);
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numFormat[1].setMinimumFractionDigits(1);
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numFormat[2].setMaximumFractionDigits(2);
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numFormat[2].setMinimumFractionDigits(2);
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* Padd a number from left.
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* @param numFracDigits number of digits in fraction part - must be 0 or 1 or 2.
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* @param f number to be formatted.
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* @param col column name (used for deciding on length).
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* @return formatted string.
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public static String format(int numFracDigits, float f, String col) {
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String res = padd + numFormat[numFracDigits].format(f);
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return res.substring(res.length() - col.length());
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public static String format(int numFracDigits, double f, String col) {
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String res = padd + numFormat[numFracDigits].format(f);
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return res.substring(res.length() - col.length());
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* Pad a number from right.
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* @param numFracDigits number of digits in fraction part - must be 0 or 1 or 2.
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* @param f number to be formatted.
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* @param col column name (used for deciding on length).
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* @return formatted string.
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public static String formatPaddRight(int numFracDigits, float f, String col) {
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String res = numFormat[numFracDigits].format(f) + padd;
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return res.substring(0, col.length());
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public static String formatPaddRight(int numFracDigits, double f, String col) {
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String res = numFormat[numFracDigits].format(f) + padd;
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return res.substring(0, col.length());
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* Pad a number from left.
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* @param n number to be formatted.
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* @param col column name (used for deciding on length).
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* @return formatted string.
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public static String format(int n, String col) {
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String res = padd + n;
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return res.substring(res.length() - col.length());
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* Pad a string from right.
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* @param s string to be formatted.
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* @param col column name (used for deciding on length).
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* @return formatted string.
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public static String format(String s, String col) {
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String s1 = (s + padd);
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return s1.substring(0, Math.min(col.length(), s1.length()));
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* Pad a string from left.
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* @param s string to be formatted.
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* @param col column name (used for deciding on length).
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* @return formatted string.
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public static String formatPaddLeft(String s, String col) {
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String res = padd + s;
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return res.substring(res.length() - col.length());