| /* |
| The MIT License |
| |
| Copyright (c) 2004-2015 Paul R. Holser, Jr. |
| |
| Permission is hereby granted, free of charge, to any person obtaining |
| a copy of this software and associated documentation files (the |
| "Software"), to deal in the Software without restriction, including |
| without limitation the rights to use, copy, modify, merge, publish, |
| distribute, sublicense, and/or sell copies of the Software, and to |
| permit persons to whom the Software is furnished to do so, subject to |
| the following conditions: |
| |
| The above copyright notice and this permission notice shall be |
| included in all copies or substantial portions of the Software. |
| |
| THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, |
| EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF |
| MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND |
| NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE |
| LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION |
| OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION |
| WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE. |
| */ |
| |
| package joptsimple.util; |
| |
| import static joptsimple.internal.Strings.*; |
| |
| /** |
| * <p>A simple string key/string value pair.</p> |
| * |
| * <p>This is useful as an argument type for options whose values take on the form {@code key=value}, such as JVM |
| * command line system properties.</p> |
| * |
| * @author <a href="mailto:pholser@alumni.rice.edu">Paul Holser</a> |
| */ |
| public final class KeyValuePair { |
| public final String key; |
| public final String value; |
| |
| private KeyValuePair( String key, String value ) { |
| this.key = key; |
| this.value = value; |
| } |
| |
| /** |
| * Parses a string assumed to be of the form {@code key=value} into its parts. |
| * |
| * @param asString key-value string |
| * @return a key-value pair |
| * @throws NullPointerException if {@code stringRepresentation} is {@code null} |
| */ |
| public static KeyValuePair valueOf( String asString ) { |
| int equalsIndex = asString.indexOf( '=' ); |
| if ( equalsIndex == -1 ) |
| return new KeyValuePair( asString, EMPTY ); |
| |
| String aKey = asString.substring( 0, equalsIndex ); |
| String aValue = equalsIndex == asString.length() - 1 ? EMPTY : asString.substring( equalsIndex + 1 ); |
| |
| return new KeyValuePair( aKey, aValue ); |
| } |
| |
| @Override |
| public boolean equals( Object that ) { |
| if ( !( that instanceof KeyValuePair ) ) |
| return false; |
| |
| KeyValuePair other = (KeyValuePair) that; |
| return key.equals( other.key ) && value.equals( other.value ); |
| } |
| |
| @Override |
| public int hashCode() { |
| return key.hashCode() ^ value.hashCode(); |
| } |
| |
| @Override |
| public String toString() { |
| return key + '=' + value; |
| } |
| } |