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 /*
  * Copyright (C) 2011 Tatsuhiro Tsujikawa
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  * of the Software, and to permit persons to whom the Software is
 * furnished to do so, subject to the following conditions:
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 * The above copyright notice and this permission notice shall be
 * 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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package net.sourceforge.argparse4j.helper;

This interface abstracts the way of counting text width.

Since argparse4j is command line argument parser package and it is intended to be used in terminal emulator and the terminal emulator in general uses fixed width fonts, the meaning of "width" here is given text consumes how many fixed character width. For string consisting only with ascii latin characters, it will be the same as the number of characters in given text. But for CJK characters are concerned this is not the case.

public interface TextWidthCounter {

    
Counts given text consumes how many fixed character width.

Parameters:
text The text to inspect.
Returns:
The computed value.
    int width(String text);
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