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-- Copyright 2008 Steven Barth <steven@midlink.org>
-- Copyright 2015 Nils Schneider <nils@nilsschneider.net>
-- Licensed to the public under the Apache License 2.0.
--
-- This is basically everything useful from luci.model.uci
-- without any luci dependency.
local uci = require 'uci'
local M = {}
M.APIVERSION = uci.APIVERSION
local Cursor = setmetatable({}, {
-- Forward calls to the actual UCI cursor
__index = function(t, f)
return function(self, ...)
local c = self.cursor
return c[f](c, ...)
end
end,
})
function M.cursor()
return setmetatable({
cursor = uci.cursor(),
}, {
__index = Cursor,
})
end
function Cursor:set(config, section, option, value)
if value ~= nil and not (type(value) == 'table' and #value == 0) then
if type(value) == 'boolean' then
value = value and '1' or '0'
end
return self.cursor:set(config, section, option, value)
else
self:delete(config, section, option)
return true
end
end
-- returns a boolean whether to delete the current section (optional)
function Cursor:delete_all(config, stype, comparator)
local del = {}
if type(comparator) == "table" then
local tbl = comparator
comparator = function(section)
for k, v in pairs(tbl) do
if section[k] ~= v then
return false
end
end
return true
end
end
local function helper (section)
if not comparator or comparator(section) then
del[#del+1] = section[".name"]
end
end
self:foreach(config, stype, helper)
for i, j in ipairs(del) do
self:delete(config, j)
end
end
function Cursor:section(config, type, name, values)
local stat = true
if name then
stat = self.cursor:set(config, name, type)
else
name = self:add(config, type)
stat = name and true
end
if stat and values then
stat = self:tset(config, name, values)
end
return stat and name
end
function Cursor:tset(config, section, values)
local stat = true
for k, v in pairs(values) do
if k:sub(1, 1) ~= "." then
stat = stat and self:set(config, section, k, v)
end
end
return stat
end
function Cursor:get_bool(...)
local val = self:get(...)
return val == "1"
end
function Cursor:get_list(config, section, option)
if config and section and option then
local val = self:get(config, section, option)
return ( type(val) == "table" and val or { val } )
end
return {}
end
function Cursor:get_first(conf, stype, opt, def)
local rv = def
self:foreach(conf, stype,
function(s)
local val = not opt and s['.name'] or s[opt]
if type(def) == "number" then
val = tonumber(val)
elseif type(def) == "boolean" then
val = val == "1"
end
if val ~= nil then
rv = val
return false
end
end)
return rv
end
function Cursor:set_list(config, section, option, value)
if config and section and option then
return self:set(
config, section, option,
(type(value) == "table" and value or { value })
)
end
return false
end
return M