dynamic command name

react/resume/src/emulator/commands/cat.js

@@ -8,9 +8,10 @@ const fs = require('../fs');
  */
 module.exports = (argv, terminal) => {
     if (argv.indexOf('--help') != -1) {
-        terminal.writeln('Usage: cat [file] [-n]');
+        terminal.writeln(`Usage: ${argv[0]} [files] [-n]`);
         terminal.writeln('  -n --number: show lines numbers');
         terminal.writeln('     --help:   show this help');
+        terminal.writeln('Reads file into stdout');
         return;
     }
     const numbers = (argv.indexOf('-n') != -1) || (argv.indexOf('--number') != -1);

react/resume/src/emulator/commands/cmds.js

@@ -0,0 +1,25 @@
+import { Terminal } from 'xterm';
+
+/**
+ * 
+ * @param {string[]} argv 
+ * @param {Terminal} terminal 
+ */
+module.exports = (argv, terminal) => {
+    if (argv.indexOf('--help') != -1) {
+        terminal.writeln(`Usage: ${argv[0]} [--help]`);
+        terminal.writeln('Lists all available commands.');
+        return;
+    }
+    const cmds = Object.keys(require('../commands'));
+    let i = 0;
+    cmds.forEach(x => {
+        if (x == argv[0]) return;
+        if (i == 4) {
+            terminal.writeln('');
+            i = 0;
+        } else i++;
+        terminal.write('\033[1;32m' + x + '\033[0m  ');
+    });
+    terminal.writeln('');
+}

react/resume/src/emulator/commands/index.js

@@ -1,5 +1,8 @@
 let cmds = {
-    'cat': require('./cat')
+    'cat': require('./cat'),
+    'cmds': require('./cmds'),
+    'cmdls': require('./cmds'),
+    'help': require('./cmds')
 };
 
 module.exports = cmds;