41 lines
730 B
Lua
41 lines
730 B
Lua
-- Copyright (C) by Yichun Zhang (agentzh)
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local ffi = require "ffi"
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local ffi_new = ffi.new
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local ffi_str = ffi.string
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local C = ffi.C
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--local setmetatable = setmetatable
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--local error = error
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local tonumber = tonumber
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local _M = { _VERSION = '0.14' }
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ffi.cdef[[
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typedef unsigned char u_char;
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u_char * ngx_hex_dump(u_char *dst, const u_char *src, size_t len);
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intptr_t ngx_atoi(const unsigned char *line, size_t n);
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]]
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local str_type = ffi.typeof("uint8_t[?]")
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function _M.to_hex(s)
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local len = #s
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local buf_len = len * 2
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local buf = ffi_new(str_type, buf_len)
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C.ngx_hex_dump(buf, s, len)
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return ffi_str(buf, buf_len)
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end
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function _M.atoi(s)
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return tonumber(C.ngx_atoi(s, #s))
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end
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return _M
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