/* * Copyright (c) 2004, Oracle and/or its affiliates. All rights reserved. * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. * * This code is free software; you can redistribute it and/or modify it * under the terms of the GNU General Public License version 2 only, as * published by the Free Software Foundation. Oracle designates this * particular file as subject to the "Classpath" exception as provided * by Oracle in the LICENSE file that accompanied this code. * * This code is distributed in the hope that it will be useful, but WITHOUT * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License * version 2 for more details (a copy is included in the LICENSE file that * accompanied this code). * * You should have received a copy of the GNU General Public License version * 2 along with this work; if not, write to the Free Software Foundation, * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. * * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA * or visit www.oracle.com if you need additional information or have any * questions. */package sun.tools.jstat;import java.util.*;/** * A typesafe enumeration for describing data alignment semantics * * @author Brian Doherty * @since 1.5 */public abstract class Alignment { private static int nextOrdinal = 0; private static HashMap<String, Alignment> map = new HashMap<String, Alignment>(); private static final String blanks = " "; private final String name; private final int value = nextOrdinal++; protected abstract String align(String s, int width); /** * Alignment representing a Centered alignment */ public static final Alignment CENTER = new Alignment("center") { protected String align(String s, int width) { int length = s.length(); if (length >= width) { return s; } int pad = width - length; int pad2 = pad / 2; int padr = pad % 2; if (pad2 == 0) { // only 0 or 1 character to pad return s + blanks.substring(0, padr); } else { // pad on both sides return blanks.substring(0, pad2) + s + blanks.substring(0, pad2 + padr); } } }; /** * Alignment representing a Left alignment */ public static final Alignment LEFT = new Alignment("left") { protected String align(String s, int width) { int length = s.length(); if (length >= width) { return s; } int pad = width - length; return s+blanks.substring(0, pad); } }; /** * Alignment representing a Right alignment */ public static final Alignment RIGHT = new Alignment("right") { protected String align(String s, int width) { int length = s.length(); if (length >= width) { return s; } int pad = width - length; return blanks.substring(0, pad) + s; } }; /** * Maps a string value to its corresponding Alignment object. * * @param s an string to match against Alignment objects. * @return The Alignment object matching the given string. */ public static Alignment toAlignment(String s) { return map.get(s); } /** * Returns an enumeration of the keys for this enumerated type * * @return Set of Key Words for this enumeration. */ public static Set keySet() { return map.keySet(); } public String toString() { return name; } private Alignment(String name) { this.name = name; map.put(name, this); }}
/*
* Copyright (c) 2004, Oracle and/or its affiliates. All rights reserved.
* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
*
* This code is free software; you can redistribute it and/or modify it
* under the terms of the GNU General Public License version 2 only, as
* published by the Free Software Foundation. Oracle designates this
* particular file as subject to the "Classpath" exception as provided
* by Oracle in the LICENSE file that accompanied this code.
*
* This code is distributed in the hope that it will be useful, but WITHOUT
* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
* version 2 for more details (a copy is included in the LICENSE file that
* accompanied this code).
*
* You should have received a copy of the GNU General Public License version
* 2 along with this work; if not, write to the Free Software Foundation,
* Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
*
* Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
* or visit www.oracle.com if you need additional information or have any
* questions.
*/
package sun.tools.jstat;
import java.util.*;
/**
* A typesafe enumeration for describing data alignment semantics
*
* @author Brian Doherty
* @since 1.5
*/
public abstract class Alignment {
private static int nextOrdinal = 0;
private static HashMap<String, Alignment> map = new HashMap<String, Alignment>();
private static final String blanks = " ";
private final String name;
private final int value = nextOrdinal++;
protected abstract String align(String s, int width);
/**
* Alignment representing a Centered alignment
*/
public static final Alignment CENTER = new Alignment("center") {
protected String align(String s, int width) {
int length = s.length();
if (length >= width) {
return s;
}
int pad = width - length;
int pad2 = pad / 2;
int padr = pad % 2;
if (pad2 == 0) {
// only 0 or 1 character to pad
return s + blanks.substring(0, padr);
} else {
// pad on both sides
return blanks.substring(0, pad2) + s +
blanks.substring(0, pad2 + padr);
}
}
};
/**
* Alignment representing a Left alignment
*/
public static final Alignment LEFT = new Alignment("left") {
protected String align(String s, int width) {
int length = s.length();
if (length >= width) {
return s;
}
int pad = width - length;
return s+blanks.substring(0, pad);
}
};
/**
* Alignment representing a Right alignment
*/
public static final Alignment RIGHT = new Alignment("right") {
protected String align(String s, int width) {
int length = s.length();
if (length >= width) {
return s;
}
int pad = width - length;
return blanks.substring(0, pad) + s;
}
};
/**
* Maps a string value to its corresponding Alignment object.
*
* @param s an string to match against Alignment objects.
* @return The Alignment object matching the given string.
*/
public static Alignment toAlignment(String s) {
return map.get(s);
}
/**
* Returns an enumeration of the keys for this enumerated type
*
* @return Set of Key Words for this enumeration.
*/
public static Set keySet() {
return map.keySet();
}
public String toString() {
return name;
}
private Alignment(String name) {
this.name = name;
map.put(name, this);
}
}