invidious/scripts/generate_js_licenses.cr
syeopite 20cf913a4e
Add Javascript licence information automatically
This commit automates the process of documenting the licenses of
Invidious Javascript files through a compile time macro in the
licenses.ecr template file.

This should hopefully help keep the license documentation up-to-date
and allow extensions like LibreJS to always be able to load the latest
Javascript files of Invidious.

Currently only Invidious's first-party Javascript files are supported.
In the future it should be possible to leverage videojs-dependencies.yml
to automatically document the Javascript licenses for
VideoJS and co. as well.
2025-05-10 18:44:53 -07:00

57 lines
2.0 KiB
Crystal

# This file automatically generates Crystal strings of rows within an HTML Javascript licenses table
#
# These strings will then be placed within a `<%= %>` statement in licenses.ecr at compile time which
# will be interpolated at run-time. This interpolation is only for the translation of the "source" string
# so maybe we can just switch to a non-translated string to simplify the logic here.
#
# The Javascript Web Labels table defined at https://www.gnu.org/software/librejs/free-your-javascript.html#step3
# for example just reiterates the name of the source file rather than use a "source" string.
all_javascript_files = Dir.glob("assets/**/*.js")
videojs_js = [] of String
invidious_js = [] of String
all_javascript_files.each do |js_path|
if js_path.starts_with?("assets/videojs/")
videojs_js << js_path[7..]
else
invidious_js << js_path[7..]
end
end
def create_licence_tr(path, file_name, licence_name, licence_link, source_location)
tr = <<-HTML
"<tr>
<td><a href=\\"/#{path}\\">#{file_name}</a></td>
<td><a href=\\"#{licence_link}\\">#{licence_name}</a></td>
<td><a href=\\"#{source_location}\\">\#{translate(locale, "source")}</a></td>
</tr>"
HTML
# New lines are removed as to allow for using String.join and StringLiteral.split
# to get a clean list of each table row.
tr.gsub('\n', "")
end
# TODO Use videojs-dependencies.yml to generate license info for videojs javascript
jslicence_table_rows = [] of String
invidious_js.each do |path|
file_name = path.split('/')[-1]
# A couple non Invidious JS files are also shipped alongside Invidious due to various reasons
next if {
"sse.js", "silvermine-videojs-quality-selector.min.js", "videojs-youtube-annotations.min.js",
}.includes?(file_name)
jslicence_table_rows << create_licence_tr(
path: path,
file_name: file_name,
licence_name: "AGPL-3.0",
licence_link: "https://www.gnu.org/licenses/agpl-3.0.html",
source_location: path
)
end
puts jslicence_table_rows.join("\n")