fedi2html/README.md

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fedi2html

Clipping from a screenshot of a webpage generated by fedi2html. It is showing a legibly-formatted post, containing its username, text, date, and three attachment images. The post is by Tirifto (@tirifto@jam.xwx.moe) with a custom emoji that resembles a “K” in his username. It was posted apparently at 14:12 on April 19th 2024, and says: “Antaŭ nelonge mi bakis spickukon! Domaĝe la supro iomete bruliĝis kaj mi devis senŝeligi ĝin. Sed almenaŭ tio donis bonan pretekston, kial mi nepre kovru la supron per kirlita kremo.” The message contains a custom emoji of a laughing blobcat. The hashtags are visible below as links: #lang\_eo, #bakado, #fotoj, #kuirado, #manĝaĵoj, #spickuko, kaj #vivo. The attachments are all images: “spickuko.jpg”, “spickukeroj.jpg”, and “peco.jpg”. They each have small alt-text descriptions that are truncated. There is a reply to this post, which is displayed as a box inside the responded post. Clipping from a screenshot of a webpage generated by fedi2html. A chain of three posts, each replying to the last, are visible. Each post is within a small box, containing the poster’s avatar, user-name, and text. Each response is found within a smaller box within the parent post, showing a clear hierarchy in the thread. Reid posts, mentioning jadedctrl, “but would you ask spicy questions?” jadedctrl responds, “I like using a lot of spice myself, but because of the high sodium content I couldn’t recommend a diet like that to other people on good conscious”. jadedctrl also responds with a custom emoji of a laughing blobcat. Reid responds to that response, “a life without spice is like GTA without crime: too damn boring”.

fedi2html is a shell script that renders posts from Fediverse/Mastodon/Pleroma/etc to text — for instance, HTML. It could be used for archiving posts, embedding comments into a webpage, etc; the latter is my use-case.

Inspired by the work of Óscar Otero, who was inspired by Thiago Cerqueira, who was inspired by Julian Fietkau, who was in turn inspired by Cassidy James, who also was inspired by Jan Wildeboer who was inspired by Yidhra Farm, who was inspired by Joel Chrono who was inspired by Carl Schwan.

Usage

fedi2html can take post URLs or user URLs from a fediverse server.
In the first case, it will render the post and, by default, all responses.
If a user URL is given, it will by default render the users posts, responses, and repeats; and all responses to these.

$ echo '<html><head><link rel="stylesheet" href="style.css" type="text/css"/></head>' > out.html
$ fedi2html https://jam.xwx.moe/users/Tirifto >> out.html
$ fedi2html https://jam.xwx.moe/notice/AfJdu8YChrGdHXmOpM >> out.html

Of course, the output is by-default unstylized HTML, including no CSS; for best results, Id recommend using the style.css file found in this directory, as is done above (by prepending its inclusion in a tag).

Arguments

There are six arguments you should be aware of:

Flag Description
-c Only print responses to the post(s).
-I Display posts in reverse-chronological order.
-l NUM Display at maximum NUM posts.
-R Do not recursively fetch & display responses.
-b Exclude reblogs/repeats in user feeds.
-B Exclude top-level replies in user feeds.
-t TAG Only print posts of TAG in user feeds.

Templates

fedi2html doesnt technically have to render posts as HTML, because you can specify the template it uses for printing posts, attachments, etc. For this, we use environment variables containing shell-style variables (dollar-sign followed by variable name).

There are four templates used: $POST_TEMPLATE, $ATTACH_TEMPLATE, $ATTACH_IMAGE_TEMPLATE, and $IMAGE_TEMPLATE. You can take a look at fedi2htmls first few lines to see the default values.

POST_TEMPLATE

$POST_TEMPLATE is for the overall post structure. It contains the post contents, all responses, and attachment data. The variables that can be specified inside of it are:

Variable Description
$ACCOUNT_ID The posters user@host ID.
$ACCOUNT_URL URL to the posters profile.
$ACCOUNT_NAME Posters display name.
$ACCOUNT_AVATAR URL to the posters avatar image.
$POST_URL URL of the post.
$POST_DATE Date the post was made.
$POST_CONTENT HTML/text content of the post.
$POST_ATTACHMENTS Attachments, as rendered from other templates.
$POST_RESPONSES Reply posts, which will use this template.

Keep in mind that posts are “recursive” — that$POST_RESPONSES will be substituted with other results of the $POST_TEMPLATE.

ATTACH_TEMPLATE

$ATTACH_TEMPLATE and $ATTACH_IMAGE_TEMPLATE determine how attachments will be rendered within a post. This template will be substituted into the $POST_TEMPLATEs $POST_ATTACHMENTS variable. Variables available to these templates are:

Variable Description
$ATTACH_URL URL to the attachment file.
$ATTACH_NAME Name of the attached file.
$ATTACH_TYPE Mime-type of the attachment file.
$ATTACH_DESC Description/alt-text of the attachment.
$ATTACH_PREVIEW “Preview” URL of the attachment.

EMOJI_TEMPLATE

$EMOJI_TEMPLATE is used for rendering custom emojis; it appears in-line in post-contents, users display-names, etc. The variables that can be specified inside of it are:

Variable Description
$EMOJI_SHORTCODE The corresponding shortcode.
$EMOJI_URL URL to the emojis image file.

Installation

Installing fedi2html itself is simpler than simple — just copy it into your PATH!

Assuming that you use ~/.local/bin/:

$ PATH="$PATH:~/.local/bin/"
$ chmod +x fedi2html
$ cp fedi2html ~/.local/bin/

Dependencies

However, fedi2html has some dependencies:

  • curl — For fetching/downloading posts.
  • jq — For parsing the resultant JSON.

They are both fairly standard, and are generally accessible as packages curl and jq, respectively. In the rare cases they arent, both are written in C and are easily-compilable.

Misc

Written by Jaidyn Ann jadedctrl@posteo.at
License is GNU GPLv3
Source is at https://hak.xwx.moe/jadedctrl/fedi2html