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--[[
FFLuCI - Menu Builder
Description:
Collects menu building information from controllers
FileId:
$Id$
License:
Copyright 2008 Steven Barth <steven@midlink.org>
Licensed under the Apache License, Version 2.0 (the "License");
you may not use this file except in compliance with the License.
You may obtain a copy of the License at
http://www.apache.org/licenses/LICENSE-2.0
Unless required by applicable law or agreed to in writing, software
distributed under the License is distributed on an "AS IS" BASIS,
WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
See the License for the specific language governing permissions and
limitations under the License.
]]--
module("ffluci.menu", package.seeall)
require("ffluci.fs")
require("ffluci.util")
require("ffluci.template")
ctrldir = ffluci.fs.dirname(ffluci.util.__file__()) .. "/controller/"
modelpath = ffluci.fs.dirname(ffluci.util.__file__()) .. "/model/menudata.lua"
-- Cache menudata into a Luafile instead of recollecting it at every pageload
-- Warning: Make sure the menudata cache gets deleted everytime you update
-- the menu information of any module or add or remove a module
builder_enable_cache = false
-- Builds the menudata file
function build()
local data = collect()
ffluci.fs.writefile(modelpath, dump(data, "m"))
return data
end
-- Collect all menu information provided in the controller modules
function collect()
local m = {}
for k,cat in pairs(ffluci.fs.dir(ctrldir)) do
m[cat] = {}
for k,con in pairs(ffluci.fs.dir(ctrldir .. "/" .. cat)) do
if con:sub(-4) == ".lua" then
con = con:sub(1, con:len()-4)
local mod = require("ffluci.controller." .. cat .. "." .. con)
if mod.menu and mod.menu.descr
and mod.menu.entries and mod.menu.order then
local entry = {}
entry[".descr"] = mod.menu.descr
entry[".order"] = mod.menu.order
entry[".contr"] = con
for k,v in pairs(mod.menu.entries) do
entry[k] = v
end
local i = 0
for k,v in ipairs(m[cat]) do
if v[".order"] > entry[".order"] then
break
end
i = k
end
table.insert(m[cat], i+1, entry)
end
end
end
end
return m
end
-- Dumps a table into a string of Lua code
function dump(tbl, name)
local src = name .. "={}\n"
for k,v in pairs(tbl) do
if type(k) == "string" then
k = ffluci.util.escape(k)
k = "'" .. ffluci.util.escape(k, "'") .. "'"
end
if type(v) == "string" then
v = ffluci.util.escape(v)
v = ffluci.util.escape(v, "'")
src = src .. name .. "[" .. k .. "]='" .. v .. "'\n"
elseif type(v) == "number" then
src = src .. name .. "[" .. k .. "]=" .. v .. "\n"
elseif type(v) == "table" then
src = src .. dump(v, name .. "[" .. k .. "]")
end
end
return src
end
-- Returns the menu information
function get()
if builder_enable_cache then
local cachemt = ffluci.fs.mtime(modelpath)
local data = nil
if cachemt == nil then
data = build()
else
local fenv = {}
local f = loadfile(modelpath)
setfenv(f, fenv)
f()
data = fenv.m
end
return data
else
return collect()
end
end
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