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49fd8648
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Michal Horký
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import java.io.File;
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import java.io.IOException;
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import java.util.HashMap;
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import io.FileWorker;
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import javafx.application.Application;
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967b6b05
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horkmi
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/**
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* Command-line user interface.
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*/
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49fd8648
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Michal Horký
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public class CLI implements IConversionResults {
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967b6b05
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horkmi
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/**
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* Instances of this class define options for running the application.
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*/
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49fd8648
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Michal Horký
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private static class Option {
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967b6b05
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horkmi
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/**
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* Abbreviation for the option name.
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*/
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49fd8648
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Michal Horký
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String abbr;
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967b6b05
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horkmi
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/**
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* Text describing the activity for the option.
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*/
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49fd8648
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Michal Horký
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String about;
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967b6b05
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horkmi
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/**
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* Converts an input argument to the option for comparison with options in the
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* list.
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*
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* @param abbr input argument.
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*/
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49fd8648
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Michal Horký
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public Option(String abbr) {
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this.abbr = abbr;
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this.about = null;
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}
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967b6b05
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horkmi
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/**
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* Creates an option to the option list.
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*
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* @param abbr option abbreviation.
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* @param about option description.
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*/
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49fd8648
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Michal Horký
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public Option(String abbr, String about) {
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this.abbr = abbr;
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this.about = about;
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}
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967b6b05
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horkmi
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49fd8648
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Michal Horký
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@Override
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public String toString() {
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return abbr + "\t" + about;
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}
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@Override
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public int hashCode() {
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return abbr.hashCode();
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}
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@Override
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public boolean equals(Object obj) {
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if (this == obj) {
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return true;
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}
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if (obj == null) {
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return false;
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}
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if (this.getClass() != obj.getClass()) {
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return false;
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}
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Option other = (Option) obj;
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return this.abbr.equals(other.abbr);
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}
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}
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967b6b05
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horkmi
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/**
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* The list of options for running the application.
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*/
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49fd8648
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Michal Horký
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private static HashMap<Option, Runnable> options;
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967b6b05
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horkmi
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/**
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* Whether the resulting JSON should be written to the command line.
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*/
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49fd8648
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Michal Horký
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private static boolean printJSON;
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967b6b05
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horkmi
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/**
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* Where to save the resulting JSON.
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*/
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49fd8648
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Michal Horký
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private static File outputFile;
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967b6b05
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horkmi
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/**
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* Initialization of static variables.
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*/
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49fd8648
|
Michal Horký
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static {
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options = new HashMap<Option, Runnable>();
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options.put(new Option("-?", "\tPrint this help message."), () -> {
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help();
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});
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options.put(new Option("-help", "Print this help message."), () -> {
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help();
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});
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a5d16f0a
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horkmi
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options.put(new Option("-print", "Prints the resulting json to the console."), () -> {
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49fd8648
|
Michal Horký
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setPrintJSON();
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});
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printJSON = false;
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}
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967b6b05
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horkmi
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/**
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* Prints help for running the application.
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*/
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49fd8648
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Michal Horký
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private static void help() {
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967b6b05
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horkmi
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System.out.println("\n" + "Usage:" + "\n" + " java ... -jar JOU_Deserializer.jar [-options] [args...]" + "\n"
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+ "\n" + "...:" + "\n"
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49fd8648
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Michal Horký
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+ " When running the app in the JVM 11, the following VM arguments may be required:" + "\n"
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967b6b05
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horkmi
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+ " --module-path libs\\javafx-sdk-11.0.2\\lib --add-modules=javafx.controls" + "\n" + "\n"
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+ "-options:" + "\n" + printOptions() + "\n" + "args...:" + "\n"
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49fd8648
|
Michal Horký
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+ " Input and output file. Output file need not be specified, if options contains -print." + "\n"
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967b6b05
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horkmi
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+ "\n" + "Note: if no options and arguments are specified, the GUI is created." + "\n" + "\n"
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+ "Example:" + "\n" + " CLI: java -jar JOU_Deserializer.jar -print input.data output.json" + "\n"
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49fd8648
|
Michal Horký
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+ " GUI: java -jar JOU_Deserializer.jar" + "\n");
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}
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967b6b05
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horkmi
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/**
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* Sets printJSON to true.
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*/
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49fd8648
|
Michal Horký
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private static void setPrintJSON() {
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printJSON = true;
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}
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967b6b05
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horkmi
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/**
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* @return string with all possible options for running the application.
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*/
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a5d16f0a
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horkmi
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private static String printOptions() {
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String result = "";
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for (Option option : options.keySet()) {
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result += " " + option + "\n";
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}
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return result;
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}
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140 |
49fd8648
|
Michal Horký
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967b6b05
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horkmi
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/**
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* Main method.
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*
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* @param args input arguments.
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*/
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49fd8648
|
Michal Horký
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public static void main(String[] args) {
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if (args.length == 0) {
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967b6b05
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horkmi
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// If no arguments exist, launch the GUI.
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d2be23a3
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horkmi
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Application.launch(Window.class, args);
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49fd8648
|
Michal Horký
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} else {
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967b6b05
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horkmi
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// Command-line user interface only.
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49fd8648
|
Michal Horký
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String input = null, output = null;
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967b6b05
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horkmi
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// Get options and input parameters.
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49fd8648
|
Michal Horký
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for (int i = 0; i < args.length; i++) {
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Option o = new Option(args[i]);
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if (options.containsKey(o)) {
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options.get(o).run();
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} else {
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input = args[i];
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if (i == args.length - 1) {
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// If we are at the end of the list, check printJSON.
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if (!printJSON) {
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errorMessage("output not defined");
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return;
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}
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} else {
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output = args[i + 1];
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break;
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}
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}
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}
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967b6b05
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horkmi
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49fd8648
|
Michal Horký
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if (input == null) {
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// Only options.
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return;
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}
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967b6b05
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horkmi
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// Set input and output file.
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49fd8648
|
Michal Horký
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File inputFile = new File(input);
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if (!inputFile.exists()) {
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errorMessage("the input file does not exist");
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return;
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}
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outputFile = output == null ? null : new File(output);
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967b6b05
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horkmi
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// Create and run converter.
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49fd8648
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Michal Horký
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Converter thread = new Converter(new CLI());
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thread.start();
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7e0b699a
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horkmi
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thread.setInput(inputFile, null);
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a5d16f0a
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horkmi
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try {
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Thread.sleep(1000);
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} catch (InterruptedException e) {
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errorMessage("interrupted sleep of the main thread");
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}
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49fd8648
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Michal Horký
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thread.end();
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try {
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thread.join();
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} catch (InterruptedException e) {
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errorMessage("while waiting for the converter thread");
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}
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}
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}
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967b6b05
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horkmi
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/**
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* Prints an error message.
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*
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* @param message error message.
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*/
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49fd8648
|
Michal Horký
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private static void errorMessage(String message) {
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System.out.println("\nERROR: " + message.toUpperCase() + "!\n");
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}
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967b6b05
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horkmi
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49fd8648
|
Michal Horký
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@Override
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public void loadingInputFileError() {
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a5d16f0a
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horkmi
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errorMessage("there was an error loading the file");
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49fd8648
|
Michal Horký
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}
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@Override
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c670fa2f
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@havlijan17
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public void completed(String json, String loaded) {
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e608f492
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horkmi
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if (json != null) {
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49fd8648
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Michal Horký
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System.out.println("Deserialization completed.");
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saveJson(json);
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} else {
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a5d16f0a
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horkmi
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errorMessage("an error occurred while deserializing");
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e608f492
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horkmi
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if (loaded != null) {
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967b6b05
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horkmi
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System.out.println(
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"The following actions (print, save) will work with the extracted content of the file.");
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e608f492
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horkmi
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saveJson(loaded);
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} else {
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// This shouldn't happen, it's catched by the loadingInputFileError().
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System.out.println("The content read from the file is null.");
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}
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49fd8648
|
Michal Horký
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}
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}
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236 |
967b6b05
|
horkmi
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/**
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* Saves the resulting text (JSON) to the file or prints it to the command line.
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*
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* @param json the resulting text in JSON format.
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*/
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49fd8648
|
Michal Horký
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private void saveJson(String json) {
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if (outputFile != null) {
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try {
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FileWorker.saveJson(outputFile, json);
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System.out.println("The JSON file was saved correctly.");
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} catch (IOException e) {
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a5d16f0a
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horkmi
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errorMessage("there was an error saving the JSON file.");
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49fd8648
|
Michal Horký
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}
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} else {
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// Options contain -print.
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System.out.println(json);
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}
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}
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255 |
967b6b05
|
horkmi
|
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256 |
49fd8648
|
Michal Horký
|
}
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