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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 fasturl.lua
--
-- imports
import("ping")
-- parse host from url
function _parse_host(url)
-- init host cache
_g._URLHOSTS = _g._URLHOSTS or {}
-- http[s]://xxx.com/.. or [email protected]:xxx/xxx.git
local host = _g._URLHOSTS[url] or url:match("://(.-)/") or url:match("@(.-):")
-- save to cache
_g._URLHOSTS[url] = host
-- ok
return host
end
-- add urls
function add(urls)
-- get current ping info
local pinginfo = _g._PINGINFO or {}
-- add ping hosts
_g._PINGHOSTS = _g._PINGHOSTS or {}
for _, url in ipairs(urls) do
-- parse host
local host = _parse_host(url)
-- this host has not been tested?
if host and not pinginfo[host] then
table.insert(_g._PINGHOSTS, host)
end
end
end
-- sort urls
function sort(urls)
-- ping hosts
local pinghosts = table.unique(_g._PINGHOSTS or {})
if pinghosts and #pinghosts > 0 then
-- ping them and test speed, enable cache by default
local pinginfo = ping(pinghosts)
-- merge to ping info
_g._PINGINFO = table.join(_g._PINGINFO or {}, pinginfo)
end
-- sort urls by the ping info
local pinginfo = _g._PINGINFO or {}
table.sort(urls, function(a, b)
a = pinginfo[_parse_host(a) or ""] or 65536
b = pinginfo[_parse_host(b) or ""] or 65536
return a < b
end)
-- clear hosts
_g._PINGHOSTS = {}
-- ok
return urls
end
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