Convert MSG to EML in CLI ?

[Erwane Breton]

Hi, this is the best msg to eml convert i've found.
There is a possibility to run it in command line ?
Thanks

[master131]

Should be possible to write a simple script in Node.js that calls the msg2eml function which can be called from command line.

[Erwane Breton]

excellent. I'm really noob with node. Do you have a quick example or page tutorial ?
Maybe something like this ?

• https://stackoverflow.com/questions/30782693/run-function-in-script-from-command-line-node-js
• https://www.digitalocean.com/community/tutorials/nodejs-command-line-arguments-node-scripts

Thanks

[master131]

Don't have an example, otherwise you can look at the below Python script which most of my web version is based on:

https://github.com/JoshData/convert-outlook-msg-file

[Erwane Breton]

Hi, There is a npm package or not for this repository ?

Here my CLI code

mkdir convert-msg
cd convert-msg
git clone https://github.com/master131/msg2eml.js.git msg2eml
cd msg2eml
npm install
npm run build
cd ..

Create a package.json

{
  "name": "convert-msg",
  "version": "1.0.0",
  "description": "Convert Outlook .msg Files to .eml in CLI",
  "main": "convert.js",
  "bin": {
    "convert-msg": "convert.js"
  },
  "author": "",
  "license": "ISC",
  "dependencies": {
    "filereader": "^0.10",
    "file-api": "^0.10",
    "mime": "^1"
  }
}

Then
npm install --no-fund

Create a convert.js

let msg2eml = require('./msg2eml/lib/msg2eml');
const FileReader = require("filereader/FileReader");
const FileApi = require('file-api');

const args = process.argv.slice(2);
let filePath = args[0];

function convertMsgToEml(path) {
    let file = new FileApi.File(path);

    let fileReader = new FileReader();

    fileReader.onload = function (e) {
        let buffer = fileReader.result;
        let arrayBuffer = Array.from(buffer);
        msg2eml(arrayBuffer)
            .then(function (eml) {
                fileReader = null;
                process.stdout.write(eml);
            })
            .catch(()  => {
                process.exit(1);
            });
    };

    fileReader.readAsArrayBuffer(file);
}

convertMsgToEml(filePath);

then
node convert.js /path/to/msg >/path/to/eml

Improvements welcome :)