add semver instance

1 files changed, 83 insertions, 0 deletions

diff --git a/xmake/core/base/semver.lua b/xmake/core/base/semver.lua
new file mode 100644
index 000000000..8113cac39
--- /dev/null
+++ b/xmake/core/base/semver.lua
@@ -0,0 +1,83 @@
+--!A cross-platform build utility based on Lua
+--
+-- Licensed to the Apache Software Foundation (ASF) under one
+-- or more contributor license agreements.  See the NOTICE file
+-- distributed with this work for additional information
+-- regarding copyright ownership.  The ASF licenses this file
+-- to you 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 - 2018, TBOOX Open Source Group.
+--
+-- @author      ruki
+-- @file        semver.lua
+--
+
+-- define module: semver
+local semver = semver or {}
+local _instance = _instance or {}
+
+-- load modules
+local os        = require("base/os")
+local string    = require("base/string")
+
+-- get the version info
+function _instance:get(name)
+
+    -- get it from info first
+    local value = self._INFO[name]
+    if value ~= nil then
+        return value 
+    end
+end
+
+-- get the major version
+function _instance:major()
+    return self:get("major")
+end
+
+-- get the minor version
+function _instance:minor()
+    return self:get("minor")
+end
+
+-- get the patch version
+function _instance:patch()
+    return self:get("patch")
+end
+
+-- get the raw version string
+function _instance:rawstr()
+    return self:get("raw")
+end
+
+-- new an instance
+function semver.new(version)
+
+    -- parse version first
+    local info, errors = semver.parse(version)
+    if not info then
+        return nil, errors
+    end
+
+    -- new an instance
+    local instance = table.inherit(_instance)
+
+    -- init instance
+    instance._INFO = info
+
+    -- ok
+    return instance
+end
+
+-- return module: semver
+return semver