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#!/usr/bin/lua
markdown = require('discount')
yaml = require('yaml')
function read_markdown(file)
local f = assert(io.open(file))
local data = f:read("*a")
f:close()
local yml, md = data:match("^(%-%-%-.-%-%-%-)(.*)$")
local t
local pagename = file:gsub(".md$","")
if yml and md then
t = yaml.load(yml)
t.pagename = pagename
return t, markdown(md)
else
return {title=pagename, pagename=pagename}, markdown(data)
end
end
function read_layout(file)
-- try look for template for 'path/file.md' in this order:
-- path/file.template.html
-- layout.template.html
for _,t in pairs{file:gsub(".md$", ".template.html"),
"_layout.template.html"} do
local f = io.open(t)
if f then
local data = f:read("*a")
f:close()
return data
end
end
end
function generate_navbar(active)
local f = assert(io.open("_navbar.yaml"))
local nav = yaml.load(f:read("*a"))
f:close()
local data = ""
for align, menu in pairs(nav) do
data = ('%s<span class="%s">'):format(data, align)
for _,t in pairs(menu) do
for label, ref in pairs(t) do
data = ('%s<a href="%s">%s</a>'):format(data,
ref, label)
end
end
data = data ..'</span>\n'
end
return data
end
function replace_tags(content, meta)
return content:gsub("{{(.-)}}", function(tag)
return meta[tag]
end)
end
page, content = read_markdown(assert(arg[1]))
layout = read_layout(arg[1])
page.navbar = generate_navbar()
page.content = replace_tags(content, page)
io.write((replace_tags(layout, page)))
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