23 lines
474 B
Lua
Executable File
23 lines
474 B
Lua
Executable File
#!/usr/bin/env lua
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local args do
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local parse = require 'arrr' {
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{ "Unescape instead of escaping", "--decode", "-d" };
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}
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args = parse{...}
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end
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local pattern, replace
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if args.decode then
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pattern, replace = "%%%x%x", function(escape)
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return string.char(tonumber(escape:sub(2, 3), 16))
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end
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else
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pattern = "[:/?#@!$&'()*+,;=[%]%%\n ]"
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replace = function(plain)
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return string.format("%%%0X", plain:byte())
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end
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end
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io.write((io.read("a*"):gsub(pattern, replace)))
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