mirror of
https://github.com/Proxmark/proxmark3.git
synced 2024-11-11 09:59:45 +08:00
107 lines
3.1 KiB
Lua
107 lines
3.1 KiB
Lua
|
|
--[[This file is an adaptation from the following source:
|
|
|
|
https://github.com/attractivechaos/klib/blob/master/lua/klib.lua
|
|
|
|
]]
|
|
|
|
--[[
|
|
The MIT License
|
|
|
|
Copyright (c) 2011, Attractive Chaos <attractor@live.co.uk>
|
|
|
|
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.
|
|
]]--
|
|
|
|
|
|
local function split(txt)
|
|
local retval = {};
|
|
for i in string.gmatch(txt, "%S+") do
|
|
table.insert(retval,i)
|
|
end
|
|
return retval
|
|
end
|
|
|
|
|
|
-- Description: getopt() translated from the BSD getopt(); compatible with the default Unix getopt()
|
|
--[[ Example:
|
|
for o, a in os.getopt(arg, 'a:b') do
|
|
print(o, a)
|
|
end
|
|
]]--
|
|
|
|
local function getopt(args, ostr)
|
|
-- Modification to handle strings instead of tables:
|
|
if type(args) == 'string' then
|
|
args = split(args)
|
|
end
|
|
|
|
local arg, place = nil, 0;
|
|
return function ()
|
|
if place == 0 then -- update scanning pointer
|
|
place = 1
|
|
if #args == 0
|
|
or args[1]:sub(1, 1) ~= '-' then
|
|
place = 0; return nil end
|
|
if #args[1] >= 2 then
|
|
place = place + 1
|
|
if args[1]:sub(2, 2) == '-' then -- found "--"
|
|
place = 0
|
|
table.remove(args, 1);
|
|
return nil;
|
|
end
|
|
end
|
|
end
|
|
local optopt = args[1]:sub(place, place);
|
|
place = place + 1;
|
|
local oli = ostr:find(optopt);
|
|
if optopt == ':' or oli == nil then -- unknown option
|
|
if optopt == '-' then return nil end
|
|
if place > #args[1] then
|
|
table.remove(args, 1);
|
|
place = 0;
|
|
end
|
|
return '?';
|
|
end
|
|
oli = oli + 1;
|
|
if ostr:sub(oli, oli) ~= ':' then -- do not need argument
|
|
arg = nil;
|
|
if place > #args[1] then
|
|
table.remove(args, 1);
|
|
place = 0;
|
|
end
|
|
else -- need an argument
|
|
if place <= #args[1] then -- no white space
|
|
arg = args[1]:sub(place);
|
|
else
|
|
table.remove(args, 1);
|
|
if #args == 0 then -- an option requiring argument is the last one
|
|
place = 0;
|
|
if ostr:sub(1, 1) == ':' then return ':' end
|
|
return '?';
|
|
else arg = args[1] end
|
|
end
|
|
table.remove(args, 1);
|
|
place = 0;
|
|
end
|
|
return optopt, arg;
|
|
end
|
|
end
|
|
|
|
return { getopt = getopt }
|