--!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) 2009 - 2015, ruki All rights reserved.
--
-- @author      ruki
-- @file        _maker.lua
--

-- load modules
local os        = require("base/os")
local path      = require("base/path")
local utils     = require("base/utils")
local string    = require("base/string")
local config    = require("base/config")

-- define module: _maker
local _maker = _maker or {}

-- enter the given environment
function _maker._enter(name)

    -- check
    assert(name)

    -- get the pathes for the vs environment
    local old = nil
    local new = config.get("__vsenv_" .. name)
    if new then

        -- get the current pathes
        old = os.getenv(name) or ""

        -- append the current pathes
        new = new .. ";" .. old

        -- update the pathes for the environment
        os.setenv(name, new)
    end

    -- return the previous environment
    return old;
end

-- leave the given environment
function _maker._leave(name, old)

    -- check
    assert(name)

    -- restore the previous environment
    if old then 
        os.setenv(name, old)
    end
end

-- build the target from the given makefile 
function _maker.done(mkfile, target)

    -- enter the vs environment
    local pathes    = _maker._enter("path")
    local libs      = _maker._enter("lib")
    local includes  = _maker._enter("include")
    local libpathes = _maker._enter("libpath")

    -- make command
    local cmd = nil
    if mkfile and os.isfile(mkfile) then
        cmd = string.format("nmake /f %s %s", mkfile, target or "")
    else  
        cmd = string.format("nmake %s", target or "")
    end

    -- done 
    local ok = os.execute(cmd)

    -- leave the vs environment
    _maker._leave("path",       pathes)
    _maker._leave("lib",        libs)
    _maker._leave("include",    includes)
    _maker._leave("libpath",    libpathes)

    -- ok?
    return utils.ifelse(ok == 0, true, false)
end

-- return module: _maker
return _maker