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--!A cross-platform build utility based on Lua
--
-- 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.
--
-- Copyright (C) 2015-present, TBOOX Open Source Group.
--
-- @author ruki
-- @file globalcache.lua
--
-- define module: globalcache
local globalcache = globalcache or {}
local _instance = _instance or {}
-- load modules
local table = require("base/table")
local io = require("base/io")
local os = require("base/os")
local path = require("base/path")
local global = require("base/global")
-- new an instance
function _instance.new(name)
local instance = table.inherit(_instance)
instance._NAME = name
instance:load()
instance._DATA = instance._DATA or {}
return instance
end
-- get cache name
function _instance:name()
return self._NAME
end
-- get cache data
function _instance:data()
return self._DATA
end
-- load cache
function _instance:load()
local result = io.load(path.join(global.cachedir(), self:name()))
if result ~= nil then
self._DATA = result
end
end
-- save cache
function _instance:save()
local ok, errors = io.save(path.join(global.cachedir(), self:name()), self._DATA)
if not ok then
os.raise(errors)
end
end
-- get cache value in level/1
function _instance:get(key)
return self._DATA[key]
end
-- get cache value in level/2
function _instance:get2(key1, key2)
local value1 = self:get(key1)
if value1 ~= nil then
return value1[key2]
end
end
-- get cache value in level/3
function _instance:get3(key1, key2, key3)
local value2 = self:get2(key1)
if value2 ~= nil then
return value2[key3]
end
end
-- set cache value in level/1
function _instance:set(key, value)
self._DATA[key] = value
end
-- set cache value in level/2
function _instance:set2(key1, key2, value2)
local value1 = self:get(key1)
if value1 == nil then
value1 = {}
self:set(key1, value1)
end
value1[key2] = value2
end
-- set cache value in level/3
function _instance:set3(key1, key2, key3, value3)
local value2 = self:get2(key1, key2)
if value2 == nil then
value2 = {}
self:set2(key1, key2, value2)
end
value2[key3] = value3
end
-- clear cache scopes
function _instance:clear()
self._DATA = {}
end
-- get cache instance
function globalcache.cache(cachename)
local caches = globalcache._CACHES
if not caches then
caches = {}
globalcache._CACHES = caches
end
local instance = caches[cachename]
if not instance then
instance = _instance.new(cachename)
caches[cachename] = instance
end
return instance
end
-- get all caches
function globalcache.caches(opt)
opt = opt or {}
if opt.flush then
for _, cachefile in ipairs(os.files(path.join(global.cachedir(), "*"))) do
local cachename = path.filename(cachefile)
globalcache.cache(cachename)
end
end
return globalcache._CACHES
end
-- get cache value in level/1
function globalcache.get(cachename, key)
return globalcache.cache(cachename):get(key)
end
-- get cache value in level/2
function globalcache.get2(cachename, key1, key2)
return globalcache.cache(cachename):get2(key1, key2)
end
-- get cache value in level/3
function globalcache.get3(cachename, key1, key2, key3)
return globalcache.cache(cachename):get3(key1, key2, key3)
end
-- set cache value in level/1
function globalcache.set(cachename, key, value)
return globalcache.cache(cachename):set(key, value)
end
-- set cache value in level/2
function globalcache.set2(cachename, key1, key2, value)
return globalcache.cache(cachename):set2(key1, key2, value)
end
-- set cache value in level/3
function globalcache.set3(cachename, key1, key2, key3, value)
return globalcache.cache(cachename):set3(key1, key2, key3, value)
end
-- save the given cache, it will save all caches if cache name is nil
function globalcache.save(cachename)
if cachename then
globalcache.cache(cachename):save()
else
local caches = globalcache.caches()
if caches then
for _, cache in pairs(caches) do
cache:save()
end
end
end
end
-- clear the given cache, it will clear all caches if cache name is nil
function globalcache.clear(cachename)
if cachename then
globalcache.cache(cachename):clear()
else
local caches = globalcache.caches({flush = true})
if caches then
for _, cache in pairs(caches) do
cache:clear()
end
end
end
end
-- return module: globalcache
return globalcache
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