Minor refactoring of generate.sh

[iriswebb]

I hope to get the build infrastructure in a flexible enough state eventually so that the book can be compiled into different formats (mainly, PDF and single-page HMTL)

Changes Made:

• Remove significant whitespace in generate.sh
• Give generate.sh executable permissions
• Re-run generate.sh, pushing a few previous changes to the generated html
• sed command | sed command -> sed "command; command", unnecessary $ in shell math

P.S.
Right now, the filenames for the chapters are being stored in a simple text file, and the titles for the chapters are being extracted using sed, if that file was a YAML file, which stored the filenames and titles in a list, and the templating could use it to reference the previous/next chapters (with pandoc's $for$). It would remove the need for most of the shell code here (at the cost of the file being harder to parse)

[ulysses4ever]

thanks for the contribution! this will be largely superceeded by #103.

As for the sed business... Sadly, Pandoc alone will be rather unpleasant in handling prev/next links, because the easiest is to hardcode these relationships like this:

    ---
    items:
      - title: Item 1
        content: This is item 1.
        next_item:
          title: Item 2
          url: /item2.html
      - title: Item 2
        content: This is item 2.
        next_item:
          title: Item 3
          url: /item3.html
      - title: Item 3
        content: This is item 3.
        # No next_item for the last item
    ---

Of course, it's not too bad because we don't expect the links to change any time soon, and sed is extremely fragile and non-portable, so maybe it's not too bad of an idea. Of course, if we had something more pleasant to replace bash, like a Hakyll setup, that would be even better...

[ulysses4ever]

Hey @oliverkwebb! Could you please rebase on top of the current main branch? We don't store generated HTML anymore and the shell script has been cleaned up a bit (including removing $ in arithmetics) but some of your changes may still be relevant!