Examples with Option org.apache.karaf.shell.api.action.Option used on opensource projects

Example 6 with Option

use of org.apache.karaf.shell.api.action.Option in project karaf by apache.

the class DefaultActionPreparator method printUsage.

public void printUsage(Action action, Map<Option, Field> options, Map<Argument, Field> arguments, PrintStream out, boolean globalScope, int termWidth) {
    Command command = action.getClass().getAnnotation(Command.class);
    if (command != null) {
        List<Argument> argumentsSet = new ArrayList<Argument>(arguments.keySet());
        argumentsSet.sort(Comparator.comparing(Argument::index));
        Set<Option> optionsSet = new HashSet<Option>(options.keySet());
        optionsSet.add(HelpOption.HELP);
        if (command != null && (command.description() != null || command.name() != null)) {
            out.println(INTENSITY_BOLD + "DESCRIPTION" + INTENSITY_NORMAL);
            out.print("        ");
            if (command.name() != null) {
                if (globalScope) {
                    out.println(INTENSITY_BOLD + command.name() + INTENSITY_NORMAL);
                } else {
                    out.println(command.scope() + ":" + INTENSITY_BOLD + command.name() + INTENSITY_NORMAL);
                }
                out.println();
            }
            out.print("\t");
            out.println(command.description());
            out.println();
        }
        StringBuffer syntax = new StringBuffer();
        if (command != null) {
            if (globalScope) {
                syntax.append(command.name());
            } else {
                syntax.append(String.format("%s:%s", command.scope(), command.name()));
            }
        }
        if (options.size() > 0) {
            syntax.append(" [options]");
        }
        if (arguments.size() > 0) {
            syntax.append(' ');
            for (Argument argument : argumentsSet) {
                if (!argument.required()) {
                    syntax.append(String.format("[%s] ", argument.name()));
                } else {
                    syntax.append(String.format("%s ", argument.name()));
                }
            }
        }
        out.println(INTENSITY_BOLD + "SYNTAX" + INTENSITY_NORMAL);
        out.print("        ");
        out.println(syntax.toString());
        out.println();
        if (arguments.size() > 0) {
            out.println(INTENSITY_BOLD + "ARGUMENTS" + INTENSITY_NORMAL);
            for (Argument argument : argumentsSet) {
                out.print("        ");
                out.println(INTENSITY_BOLD + argument.name() + INTENSITY_NORMAL);
                printFormatted("                ", argument.description(), termWidth, out, true);
                if (!argument.required()) {
                    if (argument.valueToShowInHelp() != null && argument.valueToShowInHelp().length() != 0) {
                        if (Argument.DEFAULT_STRING.equals(argument.valueToShowInHelp())) {
                            Object o = getDefaultValue(action, arguments.get(argument));
                            String defaultValue = getDefaultValueString(o);
                            if (defaultValue != null) {
                                printDefaultsTo(out, defaultValue);
                            }
                        } else {
                            printDefaultsTo(out, argument.valueToShowInHelp());
                        }
                    }
                }
            }
            out.println();
        }
        if (options.size() > 0) {
            out.println(INTENSITY_BOLD + "OPTIONS" + INTENSITY_NORMAL);
            for (Option option : optionsSet) {
                String opt = option.name();
                for (String alias : option.aliases()) {
                    opt += ", " + alias;
                }
                out.print("        ");
                out.println(INTENSITY_BOLD + opt + INTENSITY_NORMAL);
                printFormatted("                ", option.description(), termWidth, out, true);
                if (option.valueToShowInHelp() != null && option.valueToShowInHelp().length() != 0) {
                    if (Option.DEFAULT_STRING.equals(option.valueToShowInHelp())) {
                        Object o = getDefaultValue(action, options.get(option));
                        String defaultValue = getDefaultValueString(o);
                        if (defaultValue != null) {
                            printDefaultsTo(out, defaultValue);
                        }
                    } else {
                        printDefaultsTo(out, option.valueToShowInHelp());
                    }
                }
            }
            out.println();
        }
        if (command.detailedDescription().length() > 0) {
            out.println(INTENSITY_BOLD + "DETAILS" + INTENSITY_NORMAL);
            String desc = loadDescription(action.getClass(), command.detailedDescription());
            printFormatted("        ", desc, termWidth, out, true);
        }
    }
}