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net.dns: Lazily generate unknown RR type names

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This commit is contained in:
Kim Alvefur 2018-06-10 17:45:49 +02:00
parent 36ffa0be9c
commit 887edc9457
1 changed files with 12 additions and 3 deletions
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15
net/dns.lua
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@ -86,13 +86,22 @@ local function highbyte(i) -- - - - - - - - - - - - - - - - - - - highbyte
end end
local function augment (t) -- - - - - - - - - - - - - - - - - - - - augment local function augment (t, prefix) -- - - - - - - - - - - - - - - - - augment
local a = {}; local a = {};
for i,s in pairs(t) do for i,s in pairs(t) do
a[i] = s; a[i] = s;
a[s] = s; a[s] = s;
a[string.lower(s)] = s; a[string.lower(s)] = s;
end end
setmetatable(a, {
__index = function (_, i)
if type(i) == "number" then
return ("%s%d"):format(prefix, i);
elseif type(i) == "string" then
return i:upper();
end
end;
})
return a; return a;
end end
@ -119,8 +128,8 @@ dns.types = {
dns.classes = { 'IN', 'CS', 'CH', 'HS', [255] = '*' }; dns.classes = { 'IN', 'CS', 'CH', 'HS', [255] = '*' };
dns.type = augment (dns.types); dns.type = augment (dns.types, "TYPE");
dns.class = augment (dns.classes); dns.class = augment (dns.classes, "CLASS");
dns.typecode = encode (dns.types); dns.typecode = encode (dns.types);
dns.classcode = encode (dns.classes); dns.classcode = encode (dns.classes);