Ghostscript

Ridiculus requirements / demands can be answered with ridiculous approach.

So I had came accross the product increment, it is pdf merging, combining different pdf contents into one.

Ghostscript can do this, but it is not exactly like library and such.

Rather it is an executable command.

Thankfully golang has this beauty

Well obviously this is not exclusively in golang

So the approach will be that you build some string script and make it an executable using exec, just like we execute something in our command/shell.

The sample is like this

gs -dNOPAUSE -sDEVICE=pdfwrite -sOUTPUTFILE=combine.pdf -dBATCH 1.pdf 2.pdf 3.pdf .... x.pdf.

so you build that thing.

Don’t forget to install the ghostscript before you ship it, e.g. in Dockerfile

apk add --no-cache Ghostscript ghostscript-fonts