forked from tools/josh
368 lines
11 KiB
JavaScript
368 lines
11 KiB
JavaScript
class Commands {
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constructor(terminal, fileSystem) {
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this._terminal = terminal;
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this._fs = fileSystem;
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this._list = {
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clear: {
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fun: this.clear,
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summary: `clear terminal output`,
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usage: `clear`,
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desc: `Clears all previous terminal output.`
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},
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cd: {
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fun: this.cd,
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summary: `change directory`,
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usage: `cd [DIRECTORY]`,
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desc: "" +
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`Changes the current working directory to [DIRECTORY].
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If [DIRECTORY] is empty, nothing happens.`.trimLines()
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},
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cp: {
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fun: this.cp,
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summary: `copy file`,
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usage: `cp SOURCE DESTINATION`,
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desc: "" +
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`Copies SOURCE to DESTINATION.
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SOURCE must be a file.
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If DESTINATION exists and is a directory, SOURCE is copied into the directory.`.trimLines()
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},
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echo: {
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fun: Commands.echo,
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summary: `display text`,
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usage: `echo [TEXT]`,
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desc: `Displays [TEXT].`.trimLines()
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},
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exit: {
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fun: this.exit,
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summary: `close session`,
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usage: `exit`,
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desc: `Closes the terminal session.`
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},
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help: {
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fun: this.help,
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summary: `display documentation`,
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usage: `help [COMMAND]`,
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desc: "" +
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`Displays help documentation for [COMMAND].
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If [COMMAND] is empty, a list of all commands is shown.`.trimLines()
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},
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ls: {
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fun: this.ls,
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summary: `list directory contents`,
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usage: `ls [DIRECTORY]`,
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desc: "" +
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`Displays the files and directories in [DIRECTORY].
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If [DIRECTORY] is empty, the files and directories in the current working directory are shown.`.trimLines()
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},
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man: {
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fun: this.man,
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summary: `display manual documentation pages`,
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usage: `man PAGE`,
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desc: `Displays the manual page with the name PAGE.`
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},
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mkdir: {
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fun: this.mkdir,
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summary: `make directories`,
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usage: `mkdir DIRECTORY...`,
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desc: "" +
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`Creates the directories given by DIRECTORY.
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If more than one directory is given, the directories are created in the order they are given in`.trimLines()
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},
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mv: {
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fun: this.mv,
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summary: `move file`,
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usage: `mv SOURCE DESTINATION`,
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desc: `Renames SOURCE to DESTINATION.`
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},
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open: {
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fun: this.open,
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summary: `open web page`,
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usage: `open [-b | --blank] FILE`,
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desc: "" +
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`Opens the web page linked to by FILE in this browser window.
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If -b or --blank is set, the web page is opened in a new tab.`.trimLines()
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},
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poweroff: {
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fun: this.poweroff,
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summary: `close down the system`,
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usage: `poweroff`,
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desc: `Automated shutdown procedure to nicely notify users when the system is shutting down.`
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},
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pwd: {
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fun: this.pwd,
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summary: `print working directory`,
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usage: `pwd`,
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desc: `Displays the current working directory.`
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},
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rm: {
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fun: this.rm,
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summary: `remove file`,
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usage: `rm [-f | --force] [-r | -R | --recursive] [--no-preserve-root] FILE...`,
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desc:
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`Removes the files given by FILE.
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If more than one file is given, the files are removed in the order they are given in.
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If -f or --force is set, no warning is given if a file could not be removed.
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If -r, -R, or --recursive is set, files and directories are removed recursively.
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Unless --no-preserve-root is set, the root directory cannot be removed.`.trimLines()
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},
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rmdir: {
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fun: this.rmdir,
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summary: `remove directories`,
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usage: `rmdir DIRECTORY...`,
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desc: "" +
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`Removes the directories given by DIRECTORY.
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If more than one directory is given, the directories are removed in the order they are given in.`.trimLines()
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},
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touch: {
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fun: this.touch,
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summary: `change file timestamps`,
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usage: `touch FILE...`,
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desc: "" +
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`Update the access and modification times of each FILE to the current time.
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If a file does not exist, it is created.`.trimLines()
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}
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};
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}
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parse(input) {
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const args = new InputArgs(input);
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if (Object.keys(this._list).indexOf(args.getCommand()) >= 0) {
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return this._list[args.getCommand()].fun.bind(this)(args);
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} else if (args.getCommand().trim() === "") {
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return "";
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} else {
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return `Unknown command '${args.getCommand()}'`
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}
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}
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cd(args) {
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return this._fs.cd(args.getArg(0));
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}
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cp(args) {
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return this._fs.cp(args.getArg(0), args.getArg(1));
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}
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clear() {
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this._terminal.clear();
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return "";
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}
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static echo(args) {
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return args.getArgs()
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.join(" ")
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.replace("hunter2", "*******");
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}
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exit() {
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this._terminal.logOut();
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return "";
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}
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help(args) {
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const command = args.getArg(0, "").toLowerCase();
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const commandNames = Object.keys(this._list);
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if (commandNames.indexOf(command) >= 0) {
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const info = this._list[command];
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return "" +
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`${command} - ${info.summary}
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<b>Usage</b>
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${info.usage}
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<b>Description</b>
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${info.desc}`.trimLines();
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} else {
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const commandWidth = Math.max.apply(null, commandNames.map(it => it.length)) + 4;
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const commandEntries = commandNames.map(
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it => `${it.padEnd(commandWidth, ' ')}${this._list[it].summary}`
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);
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return "" +
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`<b>List of commands</b>
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${commandEntries.join("\n")}
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Write "help [COMMAND]" for more information on a command.`.trimLines();
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}
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}
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ls(args) {
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return this._fs.ls(args.getArg(0));
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}
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man(args) {
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if (args.getArgs().length === 0) {
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return "What manual page do you want?";
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} else if (Object.keys(this._list).indexOf(args.getArg(0)) < 0) {
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return `No manual entry for ${args.getArg(0)}`;
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} else {
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return this.help(args);
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}
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}
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mkdir(args) {
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return this._fs.mkdirs(args.getArgs());
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}
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mv(args) {
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return this._fs.mv(args.getArg(0), args.getArg(1));
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}
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open(args) {
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const fileName = args.getArg(0);
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const target = args.hasAnyOption(["b", "blank"]) ? "_blank" : "_self";
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const file = this._fs._getFile(fileName);
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if (file === undefined) {
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return `The file '${fileName}' does not exist`;
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}
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if (!FileSystem.isFile(file)) {
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return `'${fileName}' is not a file`;
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}
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if (!(file instanceof UrlFile)) {
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return `Could not open '${fileName}'`;
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}
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window.open(file.url, target);
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return "";
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}
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poweroff() {
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const date = new Date();
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date.setSeconds(date.getSeconds() + 30);
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document.cookie = `poweroff=true; expires=${date.toUTCString()}; path=/`;
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setTimeout(() => location.reload(), 2000);
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return "" +
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`Shutdown NOW!
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*** FINAL System shutdown message from ${terminal._user}@fwdekker.com ***
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System going down IMMEDIATELY
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System shutdown time has arrived`.trimLines();
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}
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pwd() {
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return this._fs.pwd;
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}
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rm(args) {
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return this._fs.rms(
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args.getArgs(),
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args.hasAnyOption(["f", "force"]),
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args.hasAnyOption(["r", "R", "recursive"]),
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args.hasOption("no-preserve-root")
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);
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}
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rmdir(args) {
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return this._fs.rmdirs(args.getArgs());
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}
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touch(args) {
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return this._fs.createFiles(args.getArgs());
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}
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}
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class InputArgs {
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constructor(input) {
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const inputParts = (input.match(/("[^"]+"|[^"\s]+)/g) || [])
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.map(it => it.replace(/^"/, "").replace(/"$/, ""));
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this._command = (inputParts[0] || "").toLowerCase();
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this._options = {};
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let i;
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for (i = 1; i < inputParts.length; i++) {
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const arg = inputParts[i];
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const argParts = arg.split("=");
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if (arg.startsWith("--")) {
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// --option, --option=value
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const argName = argParts[0].substr(2);
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this._options[argName] = (argParts[1] || "");
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} else if (arg.startsWith("-")) {
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// -o, -o=value, -opq
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if (argParts[0].length === 2) {
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// -o, -o=value
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const argName = argParts[0].substr(1);
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this._options[argName] = (argParts[1] || "");
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} else if (argParts.length === 1) {
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// -opq
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const argNames = argParts[0].substr(1).split("");
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argNames.forEach(argName => {
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this._options[argName] = "";
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});
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} else {
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// Invalid
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throw "Cannot assign value to multiple options!";
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}
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} else {
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// Not an option
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break;
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}
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this._options[argParts[0]] = (argParts[1] || "");
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}
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this._args = inputParts.slice(i);
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}
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getArgs() {
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return this._args.slice();
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}
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getArg(index, def) {
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return (def === undefined)
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? this._args[index]
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: this._args[index] || def;
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}
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hasArg(index) {
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return (this._args[index] !== undefined);
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}
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getCommand() {
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return this._command;
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}
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getOption(key, def) {
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return (def === undefined)
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? this._options[key]
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: this._options[key] || def;
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}
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hasOption(key) {
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return (this.getOption(key) !== undefined);
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}
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hasAnyOption(keys) {
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for (let i = 0; i < keys.length; i++) {
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if (this.hasOption(keys[i])) {
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return true;
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}
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}
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return false;
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}
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}
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