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• parsed-args
• 1.0
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• ShortNumericExpander.java

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com.github.methylene.args.expand.ShortNumericExpander Maven / Gradle / Ivy

package com.github.methylene.args.expand;

import com.github.methylene.args.SimpleToken;
import com.github.methylene.args.Token;
import com.github.methylene.args.TokenExpander;

import java.util.List;
import java.util.regex.Matcher;

import static com.github.methylene.args.Util.UNIX_NUMERIC_TOKEN;
import static java.util.Collections.singletonList;

public class ShortNumericExpander implements TokenExpander {

  @Override
  public List expand(Token arg) {
    if (arg.isFlag()) {
      Matcher matcher = UNIX_NUMERIC_TOKEN.matcher(arg.getKey());
      if (matcher.matches())
        return singletonList(Token.create(SimpleToken.create(matcher.group(1), matcher.group(2)), arg.getSource()));
    }
    return singletonList(arg);
  }

  @Override
  public boolean expands(Token arg) {
    return arg.isFlag() && UNIX_NUMERIC_TOKEN.matcher(arg.getKey()).matches();
  }

}