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|
----------------------------------------------------------------------
--
-- Copyright (c) 2011 Clement Farabet
--
-- Permission is hereby granted, free of charge, to any person obtaining
-- a copy of this software and associated documentation files (the
-- "Software"), to deal in the Software without restriction, including
-- without limitation the rights to use, copy, modify, merge, publish,
-- distribute, sublicense, and/or sell copies of the Software, and to
-- permit persons to whom the Software is furnished to do so, subject to
-- the following conditions:
--
-- The above copyright notice and this permission notice shall be
-- included in all copies or substantial portions of the Software.
--
-- THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
-- EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
-- MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
-- NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE
-- LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
-- OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
-- WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
--
----------------------------------------------------------------------
-- description:
-- sys - a package that provides simple system (unix) tools
--
-- ack:
-- the C lib was largely taken from Torch5 (code from Ronan)
--
-- history:
-- March 27, 2011, 9:58PM - creation - Clement Farabet
----------------------------------------------------------------------
require 'os'
require 'io'
local _G = _G
local print = print
local error = error
local require = require
local os = os
local io = io
local pairs = pairs
local ipairs = ipairs
module 'sys'
_lib = require 'libsys'
_G.libsys = nil
--------------------------------------------------------------------------------
-- load all functions from lib
--------------------------------------------------------------------------------
for k,v in pairs(_lib) do
_G.sys[k] = v
end
--------------------------------------------------------------------------------
-- tic/toc (matlab-like) timers
--------------------------------------------------------------------------------
tic = function()
__t__ = clock()
end
toc = function(verbose)
__dt__ = clock() - __t__
if verbose then print(__dt__) end
return __dt__
end
--------------------------------------------------------------------------------
-- execute an OS command, but retrieves the result in a string
-- side effect: file in /tmp
--------------------------------------------------------------------------------
execute = function(cmd, readwhat)
local tmpfile = os.tmpname()
local cmd = cmd .. ' 1>'.. tmpfile..' 2>' .. tmpfile
os.execute(cmd)
local file = _G.assert(io.open(tmpfile))
local s = file:read('*all')
file:close()
s = s:gsub('^%s*',''):gsub('%s*$','')
os.execute('rm ' .. tmpfile)
return s
end
-- TODO: use the following code, which would avoid the side effect.
-- For now it doesnt work though, and I can't explain why.
-- execute = function(cmd)
-- local f = io.popen(cmd, 'r')
-- local s = f:read('*all')
-- f:close()
-- s = s:gsub('^%s*',''):gsub('%s*$','')
-- return s
-- end
--------------------------------------------------------------------------------
-- returns the name of the OS in use
-- warning, this method is extremely dumb, and should be replaced by something
-- more reliable
--------------------------------------------------------------------------------
uname = function()
if dirp('C:\\') then
return 'windows'
else
local os = execute('uname -a')
if os:find('Linux') then
return 'linux'
elseif os:find('Darwin') then
return 'macos'
else
return '?'
end
end
end
OS = uname()
--------------------------------------------------------------------------------
-- ls (list dir)
--------------------------------------------------------------------------------
ls = function(d) d = d or ' ' return execute('ls ' ..d) end
ll = function(d) d = d or ' ' return execute('ls -l ' ..d) end
la = function(d) d = d or ' ' return execute('ls -a ' ..d) end
lla = function(d) d = d or ' ' return execute('ls -la '..d) end
--------------------------------------------------------------------------------
-- prefix
--------------------------------------------------------------------------------
prefix = execute('which lua'):gsub('//','/'):gsub('/bin/lua\n','')
--------------------------------------------------------------------------------
-- always returns the path of the file running
--------------------------------------------------------------------------------
function fpath()
local fpath = _G.debug.getinfo(2).source:gsub('@','')
if fpath:find('/') ~= 1 then fpath = concat(pwd(),fpath) end
return dirname(fpath),basename(fpath)
end
--------------------------------------------------------------------------------
-- split string based on pattern pat
--------------------------------------------------------------------------------
function split(str, pat)
local t = {} -- NOTE: use {n = 0} in Lua-5.0
local fpat = "(.-)" .. pat
local last_end = 1
local s, e, cap = str:find(fpat, last_end)
while s do
if s ~= 1 or cap ~= "" then
_G.table.insert(t,cap)
end
last_end = e+1
s, e, cap = str:find(fpat, last_end)
end
if last_end <= #str then
cap = str:sub(last_end)
_G.table.insert(t, cap)
end
return t
end
--------------------------------------------------------------------------------
-- check if a number is NaN
--------------------------------------------------------------------------------
function isNaN(number)
-- We rely on the property that NaN is the only value that doesn't equal itself.
return (number ~= number)
end
--------------------------------------------------------------------------------
-- sleep
--------------------------------------------------------------------------------
function sleep(seconds)
usleep(seconds*1000000)
end
--------------------------------------------------------------------------------
-- file iterator, in given path
--------------------------------------------------------------------------------
function files(path)
local d = dir(path)
local n = 0
return function()
n = n + 1
if (d and n <= #d) then
return d[n]
else
return nil
end
end
end
--------------------------------------------------------------------------------
-- colors, can be used to print things in color
--------------------------------------------------------------------------------
if _G.qt and _G.qt.qConsole.captureOutput then
COLORS = {none = '',
black = '',
red = '',
green = '',
yellow = '',
blue = '',
magenta = '',
cyan = '',
white = '',
Black = '',
Red = '',
Green = '',
Yellow = '',
Blue = '',
Magenta = '',
Cyan = '',
White = '',
_black = '',
_red = '',
_green = '',
_yellow = '',
_blue = '',
_magenta = '',
_cyan = '',
_white = ''}
else
COLORS = {none = '\27[0m',
black = '\27[0;30m',
red = '\27[0;31m',
green = '\27[0;32m',
yellow = '\27[0;33m',
blue = '\27[0;34m',
magenta = '\27[0;35m',
cyan = '\27[0;36m',
white = '\27[0;37m',
Black = '\27[1;30m',
Red = '\27[1;31m',
Green = '\27[1;32m',
Yellow = '\27[1;33m',
Blue = '\27[1;34m',
Magenta = '\27[1;35m',
Cyan = '\27[1;36m',
White = '\27[1;37m',
_black = '\27[40m',
_red = '\27[41m',
_green = '\27[42m',
_yellow = '\27[43m',
_blue = '\27[44m',
_magenta = '\27[45m',
_cyan = '\27[46m',
_white = '\27[47m'}
end
|
