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62 lines
2.2 KiB
Java
62 lines
2.2 KiB
Java
/*
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The MIT License
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Copyright (c) 2009 Paul R. Holser, Jr.
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Permission is hereby granted, free of charge, to any person obtaining
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a copy of this software and associated documentation files (the
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"Software"), to deal in the Software without restriction, including
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without limitation the rights to use, copy, modify, merge, publish,
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distribute, sublicense, and/or sell copies of the Software, and to
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permit persons to whom the Software is furnished to do so, subject to
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the following conditions:
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The above copyright notice and this permission notice shall be
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included in all copies or substantial portions of the Software.
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THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
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EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
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MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
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NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE
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LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
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OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
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WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
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*/
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package joptsimple;
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/**
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* Instances of this interface are used to convert arguments of options into specific
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* Java types.
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*
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* @param <V> constraint on the type of values being converted to
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* @author <a href="mailto:pholser@alumni.rice.edu">Paul Holser</a>
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* @version $Id: ValueConverter.java,v 1.9 2009/08/13 00:34:35 pholser Exp $
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*/
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public interface ValueConverter<V> {
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/**
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* Converts the given string value into a Java type.
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*
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* @param value the string to convert
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* @return the converted value
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* @throws ValueConversionException if a problem occurs while converting the value
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*/
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V convert( String value );
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/**
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* Gives the class of the type of values this converter converts to.
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*
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* @return the target class for conversion
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*/
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Class<V> valueType();
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/**
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* Gives a string that describes the pattern of the values this converter expects,
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* if any. For example, a date converter can respond with a
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* {@link java.text.SimpleDateFormat date format string}.
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*
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* @return a value pattern, or {@code null} if there's nothing interesting here
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*/
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String valuePattern();
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}
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