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function get_title_from_path (path)
if Sys.is_file(path) then
local content_raw = Sys.read_file(path)
local content_dom = HTML.parse(content_raw)
local title = HTML.select_one(content_dom, "h1")
if title then
return String.trim(HTML.inner_html(title))
else
Plugin.fail(path .. ' has no <h1> tag')
end
else
Log.warning('Missing file: ' .. path)
end
end
function generate_nav_item_from_title (title, url, template)
local env = {}
env["url"] = url
env["title"] = title
local new_content = String.render_template(template, env)
return HTML.parse(new_content)
end
function generate_nav_items (cwd, cls, template)
local elements = HTML.select(page, cls)
local i = 1
while elements[i] do
local element = elements[i]
local url = HTML.strip_tags(element)
local path = Sys.join_path(cwd, url)
local title_str = get_title_from_path(path)
HTML.replace_content(
element,
generate_nav_item_from_title(title_str, url, template)
)
i = i + 1
end
end
cwd = build_dir
home_template = 'This page is part of the series “<a href="/{{ url }}">{{ title }}</a>.”'
nav_template = '<a href="/{{ url }}">{{ title }}</a>'
generate_nav_items(cwd, ".series", home_template)
generate_nav_items(cwd, ".series-prev", nav_template)
generate_nav_items(cwd, ".series-next", nav_template)
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