We will build a web application that supports local db synced with remote db. This post is a continuation from the previous post: How to Build WatermelonDB Sync Backend in Elixir.

The idea is simple. Sequential UUIDv4 (128 bit) consists of unix timestamp (32 bit) + random bytes (96 bit)

Recently, I am making a simple Elixir application performing some actions to a website in an automated way.

The automated testing tool is a perfect candidate to be used to help to build application like that. I use Hound as browser automation library and Chrome as a controlled browser. For the browser driver, I use ChromeDriver.

Pomera DM100 is a distraction-free digital writing tool. Think mini laptop with only text editor application loaded.

It comes from Japan. It means its manual is in all Japanese. It becomes hard when you want to do the crucial procedure (like upgrading firmware) AND Google Translate doesn’t help you much.

I can only follow some steps in its updating guide web page and the rest of important steps in PDF are not translatable by Google Translate.

In the end, I have successfully updated my Pomera DM100 to the latest firmware.

Here are the steps:

TLDR;

Required dependencies (pom.xml) :

<dependency>
    <groupId>com.ibm.icu</groupId>
    <artifactId>icu4j</artifactId>
    <version>60.1</version>
</dependency>
<dependency>
      <groupId>commons-io</groupId>
      <artifactId>commons-io</artifactId>
      <version>2.6</version>
</dependency>

Autodetect the charset encoding of a text file or input stream then ‘remove’ (skip) Byte Order Mark (BOM) while reading based on detected charset :

File inputFile = new File("/Users/fahri/Downloads/UNKNOWN_TEXT.txt");

BOMInputStream bomInputStream = new BOMInputStream(new BufferedInputStream(new FileInputStream(inputFile)),
        ByteOrderMark.UTF_8, ByteOrderMark.UTF_16BE, ByteOrderMark.UTF_16LE, ByteOrderMark.UTF_32BE, ByteOrderMark.UTF_32LE);

System.out.println("HAS BOM : " + bomInputStream.hasBOM());

CharsetDetector detector = new CharsetDetector();
detector.setText(bomInputStream);

CharsetMatch charsetMatch = detector.detect();
System.out.println("CHARSET MATCH : " + charsetMatch.getName());

BufferedReader br = new BufferedReader(new InputStreamReader(bomInputStream, charsetMatch.getName()));
for (String line = br.readLine(); line != null; line = br.readLine()) {
    System.out.println(line);
}
br.close();