An R package to create NEWS.md files

A while back, I started to create an R package that would help me and my colleagues at statworx with our daily work. After writing the DESCRIPTION file, I did not want to do this ever again. I found the desc package which let’s you parse, manipulate and reformat the DESCRIPTION file via some functions and ergo a script. If you want more info on that, check out their GitHub repository. However, I was too lazy still, because I had to manually write the NEWS file.

I longed for the functionality of editing the NEWS file in the same script I built for the DESCRIPTION file. Since I could not find anything - and already was in a mood for programming - I wrote one my self. In this vignette, I will briefly explain what the package does. If you want to create your NEWS file from your git commits, than have a look at the fledge package.

Usage of `newsmd`

The main part of the package is the news object, which is an R6 class object and contains the text for the NEWS.md file. You can add versions, subtitles and bullet points to it via the object’s methods.

Initialise a new object

To initialise a new object you can use two different ways:

# install.packages("devtools")
devtools::install_github("Dschaykib/newsmd")
library(newsmd)

my_news <- news$new()
my_news <- newsmd()

The default text contains markdown code and looks like this:

## version 0.0.0.9000

---

### NEWS.md setup

- added NEWS.md creation with newsmd

Adding a the next version

With add_version you can update the version number.

my_news$add_version("0.0.1")

Adding a new subtitle

With add_subtitle you can add a new subtitle, where the following bullet points will be under.

my_news$add_subtitle("Bugfixes")

Adding more bullets

With add_bullet you can add more bullet points to the latest version and latest subtitle.

my_news$add_bullet(c("this is point 1", "this is point 2"))

Getting the whole text

After these few changes, let’s see how the file looks. The get_text method will return each single line of the file. Alternatively you can just use print(my_news).

my_news$get_text()

 [1] "## version 0.0.1"                    
 [2] ""                                    
 [3] "---"                                 
 [4] ""                                    
 [5] ""                                    
 [6] "### Bugfixes"                        
 [7] ""                                    
 [8] "- this is point 1"                   
 [9] "- this is point 2"                   
[10] ""                                    
[11] ""                                    
[12] "## version 0.0.0.9000"               
[13] ""                                    
[14] "---"                                 
[15] ""                                    
[16] "### NEWS.md setup"                   
[17] ""                                    
[18] "- added NEWS.md creation with newsmd"
[19] ""

Writing the NEWS.md file

At last, with write you can save all your changes into the NEWS.md file.

my_news$write()

Combination with the `desc` package

The goal of this package is to update the NEWS.md file in addition to the DESCRIPTION file. To optimize the workflow I suggest using the desc package, too. For example instead of manually defining the version number, you can use desc_bump_version() and get_version() of the desc package:

my_desc$bump_version("patch")
my_news$add_version(my_desc$get_version())

my_news$add_bullet("added automated creation for DESCRIPTION and NEWS.md")

The full example script I used for my other package, can be found here.