olexsmir.xyz/lua/lego/rss.lua(view raw)
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local a = require "lego.html.attribute"
local formatDate = require("lego.date").date
local h = require "lego.html"
local rss = {}
function rss.escape_html(html)
local map = {
["&"] = "&",
["<"] = "<",
[">"] = ">",
['"'] = """,
["'"] = "'",
}
html = html:gsub("[%z\1-\8\11-\12\14-\31]", "") -- remove control chars
return (html:gsub("[&<>\"']", function(c)
return map[c]
end))
end
---@param config {feed_url:string, home_url:string, title:string, name:string, email:string, subtitle:string}
---@param posts lego.Post[]
---@return string
function rss.rss(posts, config)
local entries = vim
.iter(posts)
---@param post lego.Post
:map(function(post)
return h.el("entry", {}, {
h.title({}, { h.text(post.meta.title) }),
h.link { a.href(config.home_url .. "/" .. post.meta.slug) },
h.el("id", {}, { h.text(config.home_url .. "/" .. post.meta.slug) }),
h.el("updated", {}, { h.text(formatDate(post.meta.date)) }),
h.el("content", { a.attr("type", "html") }, { h.raw(rss.escape_html(post.content)) }),
})
end)
:totable()
return [[<?xml version="1.0" encoding="utf-8"?>]]
.. h.render(h.el("feed", { a.attr("xmlns", "http://www.w3.org/2005/Atom") }, {
h.title({}, { h.text(config.title) }),
h.el("subtitle", {}, { h.text(config.subtitle) }),
h.el("id", {}, { h.text(config.home_url .. "/") }),
h.link { a.href(config.home_url), a.attr("rel", "alternate") },
h.link {
a.href(config.feed_url),
a.attr("rel", "self"),
a.attr("type", "application/atom+xml"),
},
h.el("updated", {}, { h.text(formatDate(posts[1].meta.date)) }),
h.el("author", {}, {
h.el("name", {}, { h.text(config.name) }),
h.el("email", {}, { h.text(config.email) }),
}),
unpack(entries),
}))
end
return rss
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