This makes gmnhg parse TOML/YAML/JSON/org-mode front matter in Hugo posts.
This also makes the library no longer render metadata in posts, removing
the API to do so. The metadata parsing code itself moves to
internal/gmnhg.
As the library no longer has a preset to include metadata in rendered
document, md2gmn will from now on silently discard front matter if it
encounters any.
Fixes#28. Unblocks #13.
This implements RSS timeline generation in gmnhg.
RSS is generated both for the whole site, and for the content
directories as an rss.xml file inside these directories.
RSS requires the absolute URI to the article. For this to work,
a geminiBaseURL setting is required to be set in the Hugo
configuration file (config.toml/json/yaml).
RSS template can be ovewritten on the site-wide /
directory-wise basis; see godoc on how to do this.
As there's no discovery method of an RSS timeline in Gemini,
the users are expected to put a link to rss.xml on their site
where necessary.
With Hugo, a page bundle can be skipped from rendering if
it specifies headless = true in its front matter. This makes
gmnhg properly skip these pages from rendering.
Fixes#11.
This adds generic sort / sortRev functions for use in gmnhg templates
which use sort.Sort to sort anything that implements sort.Interface
(which includes lists of posts).
The existing sortPosts function that used to sort posts in reverse order
becomes an alias to sortRev for backwards compatibility.
This patch adds support for Hugo's branch and leaf bundles: https://gohugo.io/content-management/page-bundles/
Content directories can now have nested subdirectories, and content from each level will be converted to Gemini. If a subdirectory has a file named index.md (or any index.* file per the footnote on the Hugo page) then it becomes a leaf bundle. For leaf bundles, only the generated index.gmi file will be passed up to parent directories as a page. The rest will be treated as "resources" that are not normally visible to pages in parent folders.
Each parent _index.md receives a list of pages from all nested subdirectories (except for the aforementioned leaf resource pages). This allows for content "rollup" pages. For instance, /series could show all pages under /series/first-season and /series/second-season, while allowing each subfolder to have its own more limited index. This also allows for "clean" URLs, as leaf bundles can be used to make pages that are basically just an index.md page under a named folder. You can then use the trimSuffix function (from sprig) in your gotmpl templates to clean up any links, by stripping "/index.md".
This patch also adds the copying of non-Markdown resource files from content directories, so that bundled resources can be pulled in. Theoretically if someone puts carefully named .gmi files in their content folder then this could cause a name collision, but you'd almost have to try to make that happen, so I didn't put in any checks for it. If this happens then any generated files with the same name are simply overwritten, so there's no serious harm done.
Hugo's leaf bundles support a special front matter attribute, "headless", which if set to true will cause the index.md file to be "invisible" and it will not be passed up to the parent. This is not currently implemented.
gmnhg is the new program that generates a Gemini site from Hugo site
content. It reads its input from content/, static/, and layouts/gmnhg/.
Its output by default goes to output/.
More doc is available in the program doc header.
This also introduces a simple program, md2gmn, that is meant for testing
the renderer on Markdown files. Nonetheless, it can be used as
a standalone tool as well.
