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#!/usr/bin/env lua
local pretty = require"pl.pretty"
local dir = require"pl.dir"
local gumbo = require"gumbo"
local function parse (stamp)
local year, month, day, hour, min, sec = stamp:match"(%d+)-(%d?%d)-(%d?%d)T(%d?%d):(%d?%d):(%d?%d)"
return {
year = tonumber(year),
month = tonumber(month),
day = tonumber(day),
hour = tonumber(hour),
min = tonumber(min),
sec = tonumber(sec),
}
end
local function describe (date)
-- strftime(3) still does not support printing day of month without leading zero or space.
return string.format("%d %s", date.day, os.date("%B", os.time(date)))
end
local pages = dir.getfiles(".", "*.html")
local takeaways = {
["published-on"] = "published",
["last-modified-on"] = "modified",
}
local excludes = {
["index.html"] = true,
["graveyard_of_the_drawings.html"] = true,
["plop.html"] = true,
}
local posts = {}
for _, filename in pairs(pages) do
local document = gumbo.parseFile(filename)
local metas = document:getElementsByTagName"meta"
local properties = {title=document.title, filename=filename:sub(3), published=""}
for _, meta in ipairs(metas) do
local take = nil
for _, attribute in ipairs(meta.attributes) do
if attribute.name == "name" then
take = takeaways[attribute.value]
end
if take and attribute.name == "content" then
properties[take] = attribute.value
end
end
end
if properties.filename:match"^[^_]" and not excludes[properties.filename] then
table.insert(posts, properties)
end
end
table.sort(posts, function (lhs, rhs) return lhs.published > rhs.published end)
print[[<table class="index">]]
local year = nil
local previous = nil
for _, page in pairs(posts) do
local date = parse(page.published)
if date and year ~= date.year then
year = date.year
previous = nil
print(string.format("<tr><td><b>%d</b><td><td>", year))
end
date = describe(date)
if date == previous then
date = ""
else
previous = date
end
print(string.format([[<tr><td>%s<td class="sep">•<td><a href="%s">%s</a>]], date, page.filename, page.title))
end
print"</table>"
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