export file command

react/resume/package.json

@@ -21,6 +21,7 @@
   "dependencies": {
     "@parcel/fs": "^2.8.3",
     "copy-to-clipboard": "^3.3.3",
+    "file-saver": "^2.0.5",
     "memfs": "^3.4.13",
     "react": "^18.2.0",
     "react-dom": "^18.2.0",

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

@@ -0,0 +1,43 @@
+import { Terminal } from 'xterm';
+import { saveAs } from 'file-saver';
+const fs = require('../fs');
+
+/**
+ * 
+ * @param { string[] } argv 
+ * @param { Terminal } terminal 
+ */
+module.exports = (argv, terminal) => {
+    if (argv.indexOf('--help') != -1 || argv.length == 1) {
+        terminal.write(
+`Usage: ${argv[0]} [FILES] [-z]
+Export file from filesystem to your device.
+    -z  Compress in zip format (not supported)`);
+        return;
+    }
+
+    let files = [...argv];
+    files.shift();
+
+    if (argv.indexOf('-z') != -1) {
+        terminal.write(`${argv[0]}: cannot zip '${files.join(' ').replace('\'', "\\'")}': not supported\n`);
+        return;
+    }
+
+    try {
+        var isFileSaverSupported = !!new Blob;
+    } catch (e) {}
+
+    if (!isFileSaverSupported) {
+        terminal.write(`${argv[0]}: Your browser does not support this feature.`);
+        return;
+    }
+
+    if (!fs.existsSync(argv[1])) {
+        terminal.write(`${argv[0]}: cannot open ${argv[1]}: no such file or directory\n`);
+        return;
+    }
+    saveAs(new Blob([fs.readFileSync(argv[1])]), argv[1]);
+
+
+}

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

@@ -7,6 +7,7 @@ let cmds = {
     'skills': require('./skills'),
     'mkdir': require('./mkdir'),
     'wget': require('./wget'),
+    'export_file': require('./export_file'),
 
     // alias l='ls -l'
     'l': (a,t) => {require('./ls')([...a, '-l'], t)},