2 -- Copyright (C) 2013 Florian Zeitz
4 -- This project is MIT/X11 licensed. Please see the
5 -- COPYING file in the source package for more information.
10 function http.urlencode(s)
11 return s and (s:gsub("[^a-zA-Z0-9.~_-]", function (c) return format("%%%02x", c:byte()); end));
13 function http.urldecode(s)
14 return s and (s:gsub("%%(%x%x)", function (c) return char(tonumber(c,16)); end));
17 local function _formencodepart(s)
18 return s and (s:gsub("%W", function (c)
20 return format("%%%02x", c:byte());
27 function http.formencode(form)
29 if form[1] then -- Array of ordered { name, value }
30 for _, field in ipairs(form) do
31 t_insert(result, _formencodepart(field.name).."=".._formencodepart(field.value));
33 else -- Unordered map of name -> value
34 for name, value in pairs(form) do
35 t_insert(result, _formencodepart(name).."=".._formencodepart(value));
38 return t_concat(result, "&");
41 function http.formdecode(s)
42 if not s:match("=") then return urldecode(s); end
44 for k, v in s:gmatch("([^=&]*)=([^&]*)") do
45 k, v = k:gsub("%+", "%%20"), v:gsub("%+", "%%20");
46 k, v = urldecode(k), urldecode(v);
47 t_insert(r, { name = k, value = v });
53 function http.contains_token(field, token)
54 field = ","..field:gsub("[ \t]", ""):lower()..",";
55 return field:find(","..token:lower()..",", 1, true) ~= nil;