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|
--!The Make-like 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 - 2017, TBOOX Open Source Group.
--
-- @author ruki
-- @file tool.lua
--
-- define module
local tool = tool or {}
-- load modules
local os = require("base/os")
local path = require("base/path")
local utils = require("base/utils")
local table = require("base/table")
local string = require("base/string")
local sandbox = require("sandbox/sandbox")
local platform = require("platform/platform")
local import = require("sandbox/modules/import")
-- load the given tool
function tool._load(kind, name, program)
-- calculate the cache key
local key = (kind or "") .. program
-- get it directly from cache dirst
tool._TOOLS = tool._TOOLS or {}
if tool._TOOLS[key] then
return tool._TOOLS[key]
end
-- not exists?
local toolpath = path.join(os.programdir(), "tools", name .. ".lua")
if not os.isfile(toolpath) then
return nil, string.format("%s not found!", name)
end
-- load script
local script, errors = loadfile(toolpath)
if script then
-- make sandbox instance with the given script
local instance, errors = sandbox.new(script, nil, path.directory(toolpath))
if not instance then
return nil, errors
end
-- import the tool module
local module, errors = instance:import()
if not module then
return nil, errors
end
-- init the tool module
if module.init then
module.init(program, kind)
end
-- save tool to the cache
tool._TOOLS[key] = module
-- ok?
return module
end
-- failed
return nil, errors
end
-- check the shellname
function tool._check(shellname, check)
-- uses the passed checker
if check ~= nil then
-- check it
local ok, errors = sandbox.load(check, shellname)
if not ok then
utils.verror(errors)
end
-- ok?
return ok
end
-- load the tool module
local module, errors = tool._load(shellname)
if not module then
utils.verror(errors)
end
-- no checker? attempt to run it directly
if not module or not module.check then
return 0 == os.exec(shellname, os.nuldev(), os.nuldev())
end
-- check it
local ok, errors = sandbox.load(module.check)
if not ok then
utils.verror(errors)
end
-- ok?
return ok
end
-- load the given tool from the given kind
--
-- the kinds:
--
-- .e.g cc, cxx, mm, mxx, as, ar, ld, sh, ..
--
function tool.load(kind)
-- get the tool program
local program = platform.tool(kind)
if not program then
return nil, string.format("cannot get tool for %s", kind)
end
-- import find_toolname()
local find_toolname = import("lib.detect.find_toolname")
-- get the tool name from the program
local name = find_toolname(program)
if not name then
return nil, string.format("cannot find tool name for %s", program)
end
-- load it
return tool._load(kind, name, program)
end
-- check the tool and return the absolute path if exists
function tool.check(shellname, dirs, check)
-- check
assert(shellname)
-- attempt to get result from cache first
tool._CHECKINFO = tool._CHECKINFO or {}
local result = tool._CHECKINFO[shellname]
if result then
return result
end
-- attempt to check it directly
if tool._check(shellname, check) then
tool._CHECKINFO[shellname] = shellname
return shellname
end
-- attempt to check it from the given directories
if not path.is_absolute(shellname) then
for _, dir in ipairs(table.wrap(dirs)) do
-- the tool path
local toolpath = path.join(dir, shellname)
if os.isexec(toolpath) then
-- check it
if tool._check(toolpath, check) then
tool._CHECKINFO[shellname] = toolpath
return toolpath
end
end
end
end
end
-- return module
return tool
|
