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--!The Automatic Cross-platform Build Tool
--
-- XMake is free software; you can redistribute it and/or modify
-- it under the terms of the GNU Lesser General Public License as published by
-- the Free Software Foundation; either version 2.1 of the License, or
-- (at your option) any later version.
--
-- XMake is distributed in the hope that it will be useful,
-- but WITHOUT ANY WARRANTY; without even the implied warranty of
-- MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
-- GNU Lesser General Public License for more details.
--
-- You should have received a copy of the GNU Lesser General Public License
-- along with XMake;
-- If not, see <a href="http://www.gnu.org/licenses/"> http://www.gnu.org/licenses/</a>
--
-- Copyright (C) 2015 - 2016, ruki All rights reserved.
--
-- @author ruki
-- @file cache.lua
--
-- define module
local cache = cache or {}
-- load modules
local io = require("base/io")
local os = require("base/os")
local path = require("base/path")
local table = require("base/table")
local utils = require("base/utils")
local config = require("project/config")
local global = require("project/global")
-- the cache instance
--
-- @param scopename local.xxxx
-- global.xxxx
--
function cache._instance(scopename)
-- check
assert(scopename)
-- init instances
cache._INSTANCES = cache._INSTANCES or {}
local instances = cache._INSTANCES
-- this instance has been initialized?
if instances[scopename] then
return instances[scopename]
end
-- init instance
local instance = table.inherit(cache)
-- check scopename
if not scopename:find("local%.") and not scopename:find("global%.") then
os.raise("invalid cache scope: %s", scopename)
end
-- make the cache path
local cachepath = (scopename:gsub("%.", "/"))
cachepath = (cachepath:gsub("^local%/", path.join(config.directory(), "cache") .. "/"))
cachepath = (cachepath:gsub("^global%/", path.join(global.directory(), "cache") .. "/"))
-- save the cache path
instance._CACHEPATH = cachepath
-- load the cache data
local results = io.load(cachepath)
if results then
instance._CACHEDATA = results
end
instance._CACHEDATA = instance._CACHEDATA or {__version = xmake._VERSION_SHORT}
-- save instance
instances[scopename] = instance
-- ok
return instance
end
-- get the value
function cache:get(name)
-- get it
return self._CACHEDATA[name]
end
-- set the value
function cache:set(name, value)
-- set it
self._CACHEDATA[name] = value
end
-- clear all
function cache:clear()
-- clear it
self._CACHEDATA = {__version = xmake._VERSION_SHORT}
end
-- flush to cache file
function cache:flush()
-- flush the version
self._CACHEDATA.__version = xmake._VERSION_SHORT
-- save to file
return io.save(self._CACHEPATH, self._CACHEDATA)
end
-- return module
return cache._instance
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