mirror of
https://github.com/Proxmark/proxmark3.git
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108 lines
3.1 KiB
Lua
108 lines
3.1 KiB
Lua
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--[[This file is an adaptation from the following source:
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https://github.com/attractivechaos/klib/blob/master/lua/klib.lua
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]]
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--[[
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The MIT License
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Copyright (c) 2011, Attractive Chaos <attractor@live.co.uk>
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Permission is hereby granted, free of charge, to any person obtaining a copy
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of this software and associated documentation files (the "Software"), to deal
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in the Software without restriction, including without limitation the rights
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to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
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copies of the Software, and to permit persons to whom the Software is
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furnished to do so, subject to the following conditions:
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The above copyright notice and this permission notice shall be included in
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all copies or substantial portions of the Software.
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THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
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AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
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LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
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OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
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SOFTWARE.
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]]--
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local function split(txt)
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local retval = {};
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for i in string.gmatch(txt, "%S+") do
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table.insert(retval,i)
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end
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return retval
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end
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-- Description: getopt() translated from the BSD getopt(); compatible with the default Unix getopt()
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--[[ Example:
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for o, a in os.getopt(arg, 'a:b') do
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print(o, a)
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end
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]]--
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local function getopt(args, ostr)
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-- Modification to handle strings instead of tables:
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if type(args) == 'string' then
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args = split(args)
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end
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local arg, place = nil, 0;
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return function ()
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if place == 0 then -- update scanning pointer
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place = 1
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if #args == 0
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or args[1]:sub(1, 1) ~= '-' then
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place = 0; return nil end
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if #args[1] >= 2 then
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place = place + 1
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if args[1]:sub(2, 2) == '-' then -- found "--"
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place = 0
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table.remove(args, 1);
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return nil;
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end
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end
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end
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local optopt = args[1]:sub(place, place);
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place = place + 1;
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local oli = ostr:find(optopt);
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if optopt == ':' or oli == nil then -- unknown option
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if optopt == '-' then return nil end
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if place > #args[1] then
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table.remove(args, 1);
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place = 0;
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end
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return '?';
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end
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oli = oli + 1;
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if ostr:sub(oli, oli) ~= ':' then -- do not need argument
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arg = nil;
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if place > #args[1] then
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table.remove(args, 1);
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place = 0;
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end
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else -- need an argument
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if place <= #args[1] then -- no white space
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arg = args[1]:sub(place);
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else
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table.remove(args, 1);
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if #args == 0 then -- an option requiring argument is the last one
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place = 0;
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if ostr:sub(1, 1) == ':' then return ':' end
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return '?';
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else arg = args[1] end
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end
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table.remove(args, 1);
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place = 0;
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end
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return optopt, arg;
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end
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end
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return { getopt = getopt }
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