1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
|
----------------------------------------------------------------------
-- sys - a package that provides simple system (unix) tools
----------------------------------------------------------------------
require 'os'
require 'io'
require 'paths'
local _G = _G
local print = print
local error = error
local require = require
local os = os
local io = io
local pairs = pairs
local ipairs = ipairs
local paths = paths
module 'sys'
--------------------------------------------------------------------------------
-- load all functions from lib
--------------------------------------------------------------------------------
_lib = require 'libsys'
_G.libsys = nil
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
--------------------------------------------------------------------------------
execute = function(cmd)
local cmd = cmd .. ' 2>&1'
local f = io.popen(cmd)
local s = f:read('*all')
f:close()
s = s:gsub('^%s*',''):gsub('%s*$','')
return s
end
--------------------------------------------------------------------------------
-- execute an OS command, but retrieves the result in a string
-- side effect: file in /tmp
-- this call is typically more robust than the one above (on some systems)
--------------------------------------------------------------------------------
fexecute = function(cmd, readwhat)
local tmpfile = os.tmpname()
local cmd = cmd .. ' 1>'.. tmpfile..' 2>' .. tmpfile
os.execute(cmd)
local file = _G.assert(io.open(tmpfile))
local s = file:read('*all')
file:close()
s = s:gsub('^%s*',''):gsub('%s*$','')
os.execute('rm ' .. tmpfile)
return s
end
--------------------------------------------------------------------------------
-- 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 paths.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 = paths.concat(paths.cwd(),fpath) end
return paths.dirname(fpath),paths.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
--------------------------------------------------------------------------------
-- colors, can be used to print things in color
--------------------------------------------------------------------------------
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'}
|
