Commit graph

15 commits

Author SHA1 Message Date
Vincent Ambo
9885b70b7a feat(cheddar): Override syntax highlighting for 'rules.pl' to Prolog
Adds a mechanism for per-filename overrides of the chosen language
syntax and configures it for Gerrit's submit rule file.

This also switches the syntax set used to the one from
//third_party/bat_syntaxes, which contains custom additions such as
Prolog support.

Change-Id: I2023dbad5b326305ef2ef0ecf34ef66a3f7575ab
Reviewed-on: https://cl.tvl.fyi/c/depot/+/349
Reviewed-by: riking <rikingcoding@gmail.com>
Reviewed-by: lukegb <lukegb@tvl.fyi>
2020-06-15 16:52:27 +00:00
Vincent Ambo
6f8fbf4aa4 chore(tools/cheddar): Bump dependencies & upgrade to LLVM 10 2020-05-25 23:37:39 +01:00
Vincent Ambo
4bbbb58cb5 chore: Rename pkgs->depot in all Nix file headers 2020-02-21 13:54:53 +00:00
Vincent Ambo
14b5447aac Merge branch 'feat/cheddar-extensions' 2020-02-09 12:07:10 +00:00
Vincent Ambo
d752cbecc0 feat(cheddar): Add toggle flag for about-filter behaviour
Cheddar now needs to be passed the --about-filter flag to toggle the
behaviour for rendering Markdown into HTML.

By default Markdown will be highlighted like normal source code (i.e.
cgit source-filtering is the default behaviour).
2020-01-19 23:54:30 +00:00
Vincent Ambo
2236d43ff7 feat(cheddar): Implement callout paragraphs
Implements support for tagging paragraphs that begin with a callout
word (TODO, WARNING, QUESTION, TIP) with an additional `cheddar-*`
class that makes it possible to render these callouts specially.

This is currently not the nicest implementation, but it works.
2020-01-11 05:06:36 +00:00
Vincent Ambo
d4e469508f refactor(cheddar): Extract code block highlighting into function
Since I am going down the path of adding additional Markdown
extensions it makes sense to avoid letting `format_markdown` turn into
a giant beast of a function.

Therefore this commit extracts the logic for rendering code blocks via
syntect and changes the innards of `format_markdown` to instead
provide arbitrary AST value replacements.
2020-01-11 02:17:19 +00:00
Vincent Ambo
a36e9f817d fix(cheddar): Fix errors if filename does not have an extension 2019-12-22 15:21:23 +00:00
Vincent Ambo
03acae2f85 feat(cheddar): Style pre-elements for better readability
Uses GitHub-like styling for <pre> elements, i.e. slight padding and
background colour highlighting.
2019-12-21 16:18:26 +00:00
Vincent Ambo
f904951384 feat(cheddar): Render code blocks in Markdown via syntect
Implements fully static (i.e. no JavaScript!) highlighting of code
blocks when rendering Markdown.

This works by walking through the Comrak AST and replacing any code
blocks with pre-rendered HTML blocks.

Syntaxes are chosen based on the "block info", which is the string
users put after the block's opening fence. This can either be
a (case-insensitive) name of a syntax, or alternatively a file
extension associated with the desired syntax.

The theme is set to one that imitates GitHub.
2019-12-21 15:57:02 +00:00
Vincent Ambo
671dbc7f72 docs(cheddar): Mention cgit filter compatibility in README 2019-12-21 15:56:44 +00:00
Vincent Ambo
d6c255a35d feat(cheddar): Render Markdown via Comrak
Renders any ".md" file by pushing it through the Comrak rendering
pipeline.

This does not yet implement syntax highlighting of fenced blocks, but
we're getting there.
2019-12-21 14:49:35 +00:00
Vincent Ambo
d35aa4ae46 refactor(cheddar): Set up scaffolding for Markdown rendering
Generalises the two bits of the program that will be required either
way (extension parsing and syntax loading).

A dependency on Comrak is introduced as I think GitHub-flavoured
Markdown (with all its fancy extensions) is desirable!
2019-12-21 14:09:12 +00:00
Vincent Ambo
81d9b81b06 feat(cheddar): Use syntax highlighting assets from bat
This uses Nix to inject the path to the syntax highlighting assets
that ship with the bat source code into the cheddar build at compile
time, where the Rust compiler then inserts it into the binary via
macros.

bat has a lot of custom syntax highlighting definitions that they
collected from all over the place (including for languages like Nix!)
and this makes them accessible to cheddar.

Also if you're reading this, can you just take a moment to appreciate
how incredible it is that Nix just lets us do something like this?!
2019-12-21 04:55:10 +00:00
Vincent Ambo
4681c07bde feat(tools/cheddar): Check in new syntax highlighting tool
The first step with this tool will be to use it as a source-filter for
cgit. The second step is to use it as the Markdown renderer by
depending on one of the Markdown libraries, with integration for
rendering code snippets directly.
2019-12-21 04:54:57 +00:00