-- resty-gitweb@utils/builder.lua
-- XML (HTML, Atom, RSS) builder class
-- Copyright (c) 2020 Joshua 'joshuas3' Stockin
--
-- This software is licensed under the MIT License.
local builder = {}
builder.__index = function(t, k)
if builder[k] then return builder[k] end
return builder.createobject({}, k)
end
builder.__call = function(self, opts)
for i,v in pairs(opts) do
if type(i) ~= "number" then
self._attributes[i] = v
else
table.insert(self._objects, v)
end
end
return self
end
function builder.createobject(attr, tag)
local o = {}
o._type = "object"
o._tag = tag
o._attributes = attr or {}
o._objects = {}
setmetatable(o, builder)
return o
end
function builder:new(doctype)
local o = {}
o._type = "root"
o._doctype = doctype
o._objects = {}
setmetatable(o, self)
return o
end
function builder:build()
local str = ""
if self._type == "root" then
if self._doctype:lower() == "html" then
str = str .. "\n"
end
end
if self._type == "object" then
if self._tag then
str = str .. "<" .. self._tag
end
for i,v in pairs(self._attributes) do
if i:sub(1,1) ~= "_" then
str = str .. " " .. i .. "=\"" .. tostring(v) .. "\""
end
end
str = str .. ">"
end
if self._type == "object" or self._type == "root" then
for _,v in pairs(self._objects) do
if type(v) == "table" then
str = str .. v:build()
else
str = str .. v
end
end
end
if self._type == "object" then
if self._attributes._closetag ~= false then
str = str .. ""
end
end
return str
end
return builder