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comparison util/http.lua @ 5458:84162b81c863

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net.http, util.http: Move definitions of urlencode/decode and formencode/decode to util.http (possible to use them without unnecessary network-related dependencies)
author Matthew Wild <mwild1@gmail.com>
date Thu, 11 Apr 2013 17:32:59 +0100
parents cc9d460aa779
children 34bfd26525f5
comparison
equal deleted inserted replaced
5454:5f69fddf6fb9 5458:84162b81c863
5 -- COPYING file in the source package for more information. 5 -- COPYING file in the source package for more information.
6 -- 6 --
7 7
8 local http = {}; 8 local http = {};
9 9
10 function http.urlencode(s)
11 return s and (s:gsub("[^a-zA-Z0-9.~_-]", function (c) return format("%%%02x", c:byte()); end));
12 end
13 function http.urldecode(s)
14 return s and (s:gsub("%%(%x%x)", function (c) return char(tonumber(c,16)); end));
15 end
16
17 local function _formencodepart(s)
18 return s and (s:gsub("%W", function (c)
19 if c ~= " " then
20 return format("%%%02x", c:byte());
21 else
22 return "+";
23 end
24 end));
25 end
26
27 function http.formencode(form)
28 local result = {};
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));
32 end
33 else -- Unordered map of name -> value
34 for name, value in pairs(form) do
35 t_insert(result, _formencodepart(name).."=".._formencodepart(value));
36 end
37 end
38 return t_concat(result, "&");
39 end
40
41 function http.formdecode(s)
42 if not s:match("=") then return urldecode(s); end
43 local r = {};
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 });
48 r[k] = v;
49 end
50 return r;
51 end
52
10 function http.contains_token(field, token) 53 function http.contains_token(field, token)
11 field = ","..field:gsub("[ \t]", ""):lower()..","; 54 field = ","..field:gsub("[ \t]", ""):lower()..",";
12 return field:find(","..token:lower()..",", 1, true) ~= nil; 55 return field:find(","..token:lower()..",", 1, true) ~= nil;
13 end 56 end
14 57
58
59
15 return http; 60 return http;