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--!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 - 2019, TBOOX Open Source Group.
--
-- @author ruki
-- @file find_python3.lua
--
-- imports
import("lib.detect.find_program")
import("lib.detect.find_programver")
-- find python
--
-- @param opt the arguments, .e.g {version = true}
--
-- @return program, version
--
-- @code
--
-- local python = find_python3()
-- local python, version = find_python3({version = true})
--
-- @endcode
--
function main(opt)
-- init options
opt = opt or {}
if is_host("windows") then
opt.pathes = opt.pathes or {}
table.insert(opt.pathes, "$(reg HKEY_CURRENT_USER\\SOFTWARE\\Python\\PythonCore\\3.7\\InstallPath;ExecutablePath)")
table.insert(opt.pathes, "$(reg HKEY_CURRENT_USER\\SOFTWARE\\Python\\PythonCore\\3.7-32\\InstallPath;ExecutablePath)")
table.insert(opt.pathes, "$(reg HKEY_CURRENT_USER\\SOFTWARE\\Python\\PythonCore\\3.6\\InstallPath;ExecutablePath)")
table.insert(opt.pathes, "$(reg HKEY_CURRENT_USER\\SOFTWARE\\Python\\PythonCore\\3.6-32\\InstallPath;ExecutablePath)")
end
-- find program
local program = find_program(opt.program or "python3", opt)
if not program then
program = find_program("python", opt)
opt.version = true
end
-- find program version
local version = nil
if program and opt.version then
opt.command = function ()
local outs, errs = os.iorunv(program, {"--version"})
return ((outs or "") .. (errs or "")):trim()
end
version = find_programver(program, opt)
end
-- check version
if version and not version:startswith("3.") then
return
end
-- ok?
return program, version
end
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