GarciaPL Notes - Java and Others

Within my previous employers, I was getting those payslips protected with a password. One day I thought what is going to happen if I would forget or lose the password! That's why I decided to write a small script in Python which might automate removing password from your payslip (or any other file).

# Requirements:
# pip install PyPDF2

import os
from PyPDF2 import PdfFileReader, PdfFileWriter

password = 'password'
directory = '/path/where/pdfs/are/stored'

def decrypt_pdf(input_path, output_path, password):
  with open(input_path, 'rb') as input_file, \
    open(output_path, 'wb') as output_file:
    reader = PdfFileReader(input_file)
    reader.decrypt(password)

    writer = PdfFileWriter()

    for i in range(reader.getNumPages()):
      writer.addPage(reader.getPage(i))

    writer.write(output_file)

if __name__ == '__main__':
  newDirectory = directory + "/Decoded"
  if not os.path.exists(newDirectory):
    os.makedirs(newDirectory)
  for filename in os.listdir(directory):
    if filename.endswith(".pdf"): 
      fullFileName = os.path.join(directory, filename)
      decrypt_pdf(fullFileName, newDirectory + "/" + filename, password)

If you would like to load JSON and present it as a table, it's quite easy if you have an Excel 2016 [1]. It's more complicated, once you have a lower version.

First of all, try to install an additional plugin called Power Query [2].

In the Power Query ribbon tab, click From Other Sources > Blank Query, then go to Advanced Editor and input below query string. Do not forget to change the path to your JSON.

Click -> Close & Load

let

Source = Json.Document(File.Contents("Z:\Directory\input.json")),
AsTable = Table.FromRecords(Source)

in

AsTable

If your JIRA does not support generating release notes because of for instance you do not fulfil Version field like in my case, there is a way to generate it based on git commit history.

First of all, you need to install a package called git-release-notes [2] via npm. It will allow you to generate release note page from git commit history using the following command :

git-release-notes 2.2.2..HEAD markdown.ejs > changelog.md

Of course, 2.2.2 is a git tag.

You might also use mentioned above template called markdown.ejs which has been written in EJS [3]. In my opinion, this template gives more control in terms how release notes will look like at the end. Of course, you might also depend on built-in template into git-release-notes module.

<% commits.forEach(function (commit) { %>
    <% if(!commit.title.startsWith('[maven-release-plugin]')) { %>
        <%= 'http://jira.com/browse/' + commit.title -%>
    <% } %>
<% }) %>

How to remove duplicates in Java 8 using field or property ? We might use reduce!

List<MyClass> distinctByField = myList.stream().reduce(new ArrayList<>(), (List<MyClass> accumulator, MyClass myClass) -> {
    if (accumulator.stream().noneMatch(item -> item.getField().equals(myClass.getField()))) {
        accumulator.add(MyClass);
    }
    return accumulator;
}, (acc1, acc2) -> {
    acc1.addAll(acc2);
    return acc1;
});