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https://github.com/bitburner-official/bitburner-src.git
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Upgrade terminal ParseCommand function
Adds ability to parse arbitrarily-nested strings into single arguments (see comments on lines 48, 64, 76) Adds ability to parse additional number formats, e.g.: hexadecimal (0x0A), octal (018), and binary (0b1101) Combines arguments separated with escaped spaces into single string arguments, e.g.: "echo Hello\ World!" -> ["echo", "Hello World!"]
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RevanProdigalKnight
GitHub
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commit
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@ -1,12 +1,21 @@
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import { KEY } from "../utils/helpers/keyCodes";
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import { substituteAliases } from "../Alias";
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// Helper function that checks if an argument (which is a string) is a valid number
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function isNumber(str: string): boolean {
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if (typeof str != "string") {
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return false;
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} // Only process strings
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return !isNaN(str as unknown as number) && !isNaN(parseFloat(str));
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// Helper function to parse individual arguments into number/boolean/string as appropriate
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function parseArg(arg) {
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// Handles all numbers including hexadecimal, octal, and binary representations, returning NaN on an unparseable string
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const asNumber = Number(arg);
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if (!isNaN(asNumber)) {
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return asNumber;
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}
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if (arg === 'true' || arg === 'false') {
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return arg === 'true';
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}
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// Strip quotation marks from strings that begin/end with the same mark
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return arg.replace(/^"(.*?)"$/g, '$1').replace(/^'(.*?)'$/g, '$1');
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}
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export function ParseCommands(commands: string): string[] {
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// Sanitize input
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commands = commands.trim();
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@ -33,98 +42,66 @@ export function ParseCommands(commands: string): string[] {
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}
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export function ParseCommand(command: string): (string | number | boolean)[] {
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// This will be used to keep track of whether we're in a quote. This is for situations
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// like the alias command:
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// alias run="run NUKE.exe"
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// We want the run="run NUKE.exe" to be parsed as a single command, so this flag
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// will keep track of whether we have a quote in
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let inQuote = ``;
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// Returns an array with the command and its arguments in each index
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// Properly handles quotation marks (e.g. `run foo.script "the sun"` will return [run, foo.script, the sun])
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let idx = 0;
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const args = [];
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let start = 0,
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i = 0;
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let prevChar = ""; // Previous character
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while (i < command.length) {
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let escaped = false; // Check for escaped quotation marks
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if (i >= 1) {
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prevChar = command.charAt(i - 1);
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if (prevChar === "\\") {
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escaped = true;
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// Track depth of quoted strings, e.g.: "the're 'going away' rather 'quickly \"and awkwardly\"'" should be parsed as a single string
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const quotes = [];
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let arg = '';
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while (idx < command.length) {
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const c = command.charAt(idx);
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// If the current character is a backslash, add the next character verbatim to the argument
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if (c === '\\') {
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arg += command.charAt(++idx);
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// If the current character is a single- or double-quote mark, add it to the current argument.
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} else if (c === KEY.DOUBLE_QUOTE || c === KEY.QUOTE) {
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arg += c;
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const quote = quotes[quotes.length - 1];
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const prev = command.charAt(idx - 1);
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const next = command.charAt(idx + 1);
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// If the previous character is a space or an equal sign this is a valid start to a new string.
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// If we're already in a quoted string, push onto the stack of string starts to track depth.
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if (
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c !== quote &&
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(
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prev === KEY.SPACE ||
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prev === KEY.EQUAL ||
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(c === KEY.DOUBLE_QUOTE && prev === KEY.QUOTE) ||
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(c === KEY.QUOTE && prev === KEY.DOUBLE_QUOTE)
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)
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) {
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quotes.push(c);
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// If the next character is a space and the current character is the same as the previously used
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// quotation mark, this is a valid end to a string. Pop off the depth tracker.
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} else if (
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c === quote &&
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(
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next === KEY.SPACE ||
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(c === KEY.DOUBLE_QUOTE && next === KEY.QUOTE) ||
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(c === KEY.QUOTE && next === KEY.DOUBLE_QUOTE)
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)
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) {
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quotes.pop();
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}
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// If the current character is a space and we are not inside a string, parse the current argument
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// and start a new one
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} else if (c === KEY.SPACE && quotes.length === 0) {
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args.push(parseArg(arg));
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arg = '';
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} else {
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// Add the current character to the current argument
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arg += c;
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}
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const c = command.charAt(i);
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if (c === KEY.DOUBLE_QUOTE) {
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// Double quotes
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if (!escaped && prevChar === KEY.SPACE) {
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const endQuote = command.indexOf(KEY.DOUBLE_QUOTE, i + 1);
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if (endQuote !== -1 && (endQuote === command.length - 1 || command.charAt(endQuote + 1) === KEY.SPACE)) {
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args.push(command.substr(i + 1, endQuote - i - 1));
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if (endQuote === command.length - 1) {
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start = i = endQuote + 1;
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} else {
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start = i = endQuote + 2; // Skip the space
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}
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continue;
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}
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} else if (inQuote === ``) {
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inQuote = KEY.DOUBLE_QUOTE;
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} else if (inQuote === KEY.DOUBLE_QUOTE) {
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inQuote = ``;
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}
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} else if (c === KEY.QUOTE) {
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// Single quotes, same thing as above
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if (!escaped && prevChar === KEY.SPACE) {
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const endQuote = command.indexOf(KEY.QUOTE, i + 1);
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if (endQuote !== -1 && (endQuote === command.length - 1 || command.charAt(endQuote + 1) === KEY.SPACE)) {
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args.push(command.substr(i + 1, endQuote - i - 1));
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if (endQuote === command.length - 1) {
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start = i = endQuote + 1;
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} else {
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start = i = endQuote + 2; // Skip the space
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}
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continue;
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}
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} else if (inQuote === ``) {
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inQuote = KEY.QUOTE;
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} else if (inQuote === KEY.QUOTE) {
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inQuote = ``;
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}
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} else if (c === KEY.SPACE && inQuote === ``) {
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const arg = command.substr(start, i - start);
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// If this is a number, convert it from a string to number
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if (isNumber(arg)) {
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args.push(parseFloat(arg));
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} else if (arg === "true") {
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args.push(true);
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} else if (arg === "false") {
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args.push(false);
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} else {
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args.push(arg);
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}
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start = i + 1;
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}
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++i;
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idx++;
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}
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// Add the last argument
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if (start !== i) {
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const arg = command.substr(start, i - start);
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// If this is a number, convert it from string to number
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if (isNumber(arg)) {
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args.push(parseFloat(arg));
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} else if (arg === "true") {
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args.push(true);
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} else if (arg === "false") {
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args.push(false);
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} else {
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args.push(arg);
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}
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// Add the last arg (if any)
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if (arg !== '') {
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args.push(parseArg(arg));
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}
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return args;
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