Example usage for com.google.common.collect Lists charactersOf

Usage

From source file:se.softhouse.jargo.CommandLineParserInstance.java

/**
 * Batch of short-named optional arguments
 * For instance, "-fs" was used instead of "-f -s"
 */// w  ww .j  a v a2s .  com
private Argument<?> batchOfShortNamedArguments(ArgumentIterator arguments, ParsedArguments holder)
        throws ArgumentException {
    String currentArgument = arguments.current();
    if (startsWithAndHasMore(currentArgument, "-")) {
        List<Character> givenCharacters = Lists.charactersOf(currentArgument.substring(1));
        Set<Argument<?>> foundOptions = newLinkedHashSetWithExpectedSize(givenCharacters.size());
        Argument<?> lastOption = null;
        for (Character optionName : givenCharacters) {
            lastOption = namedArguments.get("-" + optionName);
            if (lastOption == null || lastOption.parser().parameterArity() != NO_ARGUMENTS
                    || !foundOptions.add(lastOption)) {
                // Abort as soon as an unexpected character is discovered
                break;
            }
        }
        // Only accept the argument if all characters could be matched and no duplicate
        // characters were found
        if (foundOptions.size() == givenCharacters.size()) {
            // The last option is handled with the return
            foundOptions.remove(lastOption);

            // A little ugly that this get method has side-effects but the alternative is to
            // return a list of arguments to parse and as this should be a rare case it's not
            // worth it, the result is the same at least
            for (Argument<?> option : foundOptions) {
                parseArgument(arguments, holder, option, null);
            }
            return lastOption;
        }
    }
    return null;
}

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