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--!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) 2015 - 2016, ruki All rights reserved.
--
-- @author ruki
-- @file utils.lua
--
-- define module
local utils = utils or {}
-- load modules
local option = require("base/option")
-- the printf function
function utils.printf(msg, ...)
-- check
assert(msg)
-- trace
print(string.format(msg, ...))
end
-- the verbose function
function utils.verbose(msg, ...)
if option.get("verbose") and msg ~= nil then
-- trace
print(string.format(msg, ...))
end
end
-- the error function
function utils.error(msg, ...)
-- trace
if msg ~= nil then
print("error: " .. string.format(msg, ...))
end
end
-- the warning function
function utils.warning(msg, ...)
-- check
assert(msg)
-- format message
msg = "warning: " .. string.format(msg, ...)
-- init warnings
utils._WARNINGS = utils._WARNINGS or {}
local warnings = utils._WARNINGS
-- trace only once
if not warnings[msg] then
print(msg)
warnings[msg] = true
end
end
-- ifelse, a? b : c
function utils.ifelse(a, b, c)
if a then return b else return c end
end
-- call functions
function utils.call(funcs, pred, ...)
-- check
assert(funcs)
-- call all
for _, func in ipairs(table.wrap(funcs)) do
-- check
assert(type(func) == "function")
-- call it
local result = func(...)
-- exists predicate?
if pred and type(pred) == "function" then
if not pred(name, result) then return false end
-- failed?
elseif not result then return false end
end
-- ok
return true
end
-- return module
return utils
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