mailparser updated

ses-lambda/email2json.js

@@ -0,0 +1,44 @@
+'use strict';
+
+if (process.argv.length < 3) {
+    process.stdout.write('USAGE: nodejs emailtojson.js filename');
+    process.stdout.write('Example: nodejs emailtojson.js emailfile.eml');
+    return;
+}
+
+const fs = require('fs');
+const { MailParser } = require("mailparser");
+const mailpath = process.argv[2];
+
+let parser = new MailParser();
+let input = fs.createReadStream(mailpath);
+let mailobj = {
+    attachments: [],
+    text: {}
+};
+
+parser.on('headers', headers => {
+    let headerObj = {};
+    for (let [k, v] of headers) {
+        // We don’t escape the key '__proto__'
+        // which can cause problems on older engines
+        headerObj[k] = v;
+    }
+
+    mailobj.headers = headerObj;
+});
+
+parser.on('data', data => {
+    if (data.type === 'attachment') {
+        mailobj.attachments.push(data);
+        data.content.on('readable', () => data.content.read());
+        data.content.on('end', () => data.release());
+    } else {
+        mailobj.text = data;
+    }
+});
+
+parser.on('end', () => {
+    process.stdout.write(JSON.stringify(mailobj, (k, v) => (k === 'content' || k === 'release' ? undefined : v), 3));
+});
+input.pipe(parser);