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local path = require 'pandoc.path'
function format_date(date)
if not date then return date end
date = pandoc.utils.normalize_date(pandoc.utils.stringify(date))
local year, month, day = date:match("(%d%d%d%d)-(%d%d)-(%d%d)")
if not year then return nil end
local time = os.time({ year = tonumber(year), month = tonumber(month), day = tonumber(day) })
return {
yyyy_mm_dd = os.date("%F", time),
yyyy = os.date("%Y", time),
mm = os.date("%m", time),
dd = os.date("%d", time),
rfc3339 = os.date("%FT%T+00:00", time),
long = os.date("%B %d, %Y", time),
short = os.date("%b %d, %y", time),
}
end
function table_to_list(t, kv, cmp)
local l = pandoc.List()
if kv then
for key, value in pairs(t) do l:insert({ key = key, value = value }) end
else
for _, value in pairs(t) do l:insert(value) end
end
l:sort(cmp or function(i1, i2) return i1.key < i2.key end)
return l
end
function group_by(l, field, insert)
insert = insert or function(group, _, item)
if not group then
group = l:new({ item })
return group
end
group:insert(item)
end
local groups = {}
for i = 1, #l do
local item = l[i]
local f = field(item)
if f then
local out = insert(groups[f], f, item)
if out then groups[f] = out end
end
end
return groups
end
function make_absolute(rel, base)
return path.is_absolute(rel) and rel or path.join({ path.directory(base), rel })
end
function resolve_url(site_url, ref_file, target_file)
target_file = target_file:gsub("/index%.html$", "/")
local ref_base_dir = path.directory(ref_file)
local abs = target_file
local rel = path.make_relative(abs, ref_base_dir, true)
return { abs = abs, rel = rel, full = (site_url .. abs) }
end
function resolve_layout(layout)
if layout then
layout = pandoc.utils.stringify(layout)
return { id = layout, ["is_" .. layout] = true }
end
end
function resolve_namespace(namespace)
namespace = pandoc.utils.stringify(namespace)
local root = "index"
if namespace ~= "" then root = namespace:gsub("^/([^/]*).*$", "%1") end
return { root = { id = root, ["is_" .. root] = true }, full = namespace }
end
function prep_menu(active_id, main_menu)
local active_item = nil
local items = pandoc.List()
for i = 1, #main_menu do
local item = main_menu[i]
local active = pandoc.utils.stringify(item.id) == active_id
item.active = active
if active then active_item = item end
if not item.hidden or item.active then items:insert(item) end
end
return { items = items, active = active_item }
end
function process_pages(global, order, pages_by_id)
if not pages_by_id then return nil end
local pages_all = pandoc.List()
local pages_date_desc = pandoc.List()
for _, page in pairs(pages_by_id) do
local p = process(global, page)
pages_all:insert(p)
if p.date then pages_date_desc:insert(p) end
end
pages_all:sort(function(p1, p2)
if p1.position then
if p2.position then
return tonumber(p1.position) < tonumber(p2.position)
else
return true
end
elseif p2.position then
return false
elseif order == "date_desc" then
if p1.date then
if p2.date then
return p1.date.yyyy_mm_dd > p2.date.yyyy_mm_dd
else
return true
end
else
return false
end
else
return p1.title < p2.title
end
end)
pages_date_desc:sort(function(p1, p2)
if p1.position then
if p2.position then
return tonumber(p1.position) < tonumber(p2.position)
else
return true
end
else
return p1.date.yyyy_mm_dd > p2.date.yyyy_mm_dd
end
end)
local pages_data = { all = pages_all, date_desc = pages_date_desc, by_id = pages_by_id }
return pages_data
end
local titlecase_exceptions = pandoc.List({
"a", "an", "and", "as", "at", "but", "by", "en", "for", "if", "in", "nor", "of", "on", "or",
"per", "the", "to", "v%.?", "vs%.?", "via",
})
function titlecase(str)
return str:gsub("(%S)(%S*)(%s*)", function(a, b, space)
local word = a .. b
local is_exception = word:match("%u") or
titlecase_exceptions:find_if(
function(exception) return word:match("^" .. exception .. "$") end)
if is_exception then return word .. space end
return string.upper(a) .. b .. space
end)
end
function process(global, meta)
meta.namespace = resolve_namespace(meta.namespace)
meta.file_out = pandoc.utils.stringify(meta.file_out):gsub("^out", "")
meta.layout = resolve_layout(meta.layout)
meta.url = resolve_url(global.site.url, global.file_out, meta.file_out)
meta.title = (meta.title and titlecase(pandoc.utils.stringify(meta.title))) or ""
if meta.list_order then meta.list_order = pandoc.utils.stringify(meta.list_order) end
if meta.position then meta.position = pandoc.utils.stringify(meta.position) end
if meta.create_feed then
if meta.file_out:match(".html$") then
meta.feed = {
url = resolve_url(global.site.url, global.file_out,
meta.file_out:gsub(".html$", ".xml")),
}
else
meta.page = {
url = resolve_url(global.site.url, global.file_out,
meta.file_out:gsub(".xml$", ".html")),
}
end
end
if meta.preview then
meta.preview = make_absolute(pandoc.utils.stringify(meta.preview), meta.file_out)
meta.preview = resolve_url(global.site.url, global.file_out, meta.preview)
end
if meta.menus and meta.menus.main then
meta.menus.main = prep_menu(meta.namespace.root.id, meta.menus.main)
end
meta.pages = process_pages(global, meta.list_order, meta.pages)
if meta.date then
meta.date = format_date(meta.date)
elseif meta.pages and #meta.pages.date_desc ~= 0 then
meta.date = meta.pages.date_desc[1].date
end
if meta.last_update then
meta.last_update = format_date(meta.last_update)
elseif meta.pages and #meta.pages.date_desc ~= 0 then
meta.last_update = meta.pages.date_desc[1].last_update
elseif meta.date then
meta.last_update = meta.date
end
return meta
end
function Meta(meta)
meta.site.url = pandoc.utils.stringify(meta.site.url):gsub("/$", "")
return process(meta, meta)
end
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