3 -- |
3 -- |
4 -- This project is MIT/X11 licensed. Please see the |
4 -- This project is MIT/X11 licensed. Please see the |
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 format, char = string.format, string.char; |
|
9 local pairs, ipairs, tonumber = pairs, ipairs, tonumber; |
|
10 local t_insert, t_concat = table.insert, table.concat; |
9 |
11 |
10 function http.urlencode(s) |
12 local function urlencode(s) |
11 return s and (s:gsub("[^a-zA-Z0-9.~_-]", function (c) return format("%%%02x", c:byte()); end)); |
13 return s and (s:gsub("[^a-zA-Z0-9.~_-]", function (c) return format("%%%02x", c:byte()); end)); |
12 end |
14 end |
13 function http.urldecode(s) |
15 local function urldecode(s) |
14 return s and (s:gsub("%%(%x%x)", function (c) return char(tonumber(c,16)); end)); |
16 return s and (s:gsub("%%(%x%x)", function (c) return char(tonumber(c,16)); end)); |
15 end |
17 end |
16 |
18 |
17 local function _formencodepart(s) |
19 local function _formencodepart(s) |
18 return s and (s:gsub("%W", function (c) |
20 return s and (s:gsub("%W", function (c) |
22 return "+"; |
24 return "+"; |
23 end |
25 end |
24 end)); |
26 end)); |
25 end |
27 end |
26 |
28 |
27 function http.formencode(form) |
29 local function formencode(form) |
28 local result = {}; |
30 local result = {}; |
29 if form[1] then -- Array of ordered { name, value } |
31 if form[1] then -- Array of ordered { name, value } |
30 for _, field in ipairs(form) do |
32 for _, field in ipairs(form) do |
31 t_insert(result, _formencodepart(field.name).."=".._formencodepart(field.value)); |
33 t_insert(result, _formencodepart(field.name).."=".._formencodepart(field.value)); |
32 end |
34 end |
36 end |
38 end |
37 end |
39 end |
38 return t_concat(result, "&"); |
40 return t_concat(result, "&"); |
39 end |
41 end |
40 |
42 |
41 function http.formdecode(s) |
43 local function formdecode(s) |
42 if not s:match("=") then return urldecode(s); end |
44 if not s:match("=") then return urldecode(s); end |
43 local r = {}; |
45 local r = {}; |
44 for k, v in s:gmatch("([^=&]*)=([^&]*)") do |
46 for k, v in s:gmatch("([^=&]*)=([^&]*)") do |
45 k, v = k:gsub("%+", "%%20"), v:gsub("%+", "%%20"); |
47 k, v = k:gsub("%+", "%%20"), v:gsub("%+", "%%20"); |
46 k, v = urldecode(k), urldecode(v); |
48 k, v = urldecode(k), urldecode(v); |
48 r[k] = v; |
50 r[k] = v; |
49 end |
51 end |
50 return r; |
52 return r; |
51 end |
53 end |
52 |
54 |
53 function http.contains_token(field, token) |
55 local function contains_token(field, token) |
54 field = ","..field:gsub("[ \t]", ""):lower()..","; |
56 field = ","..field:gsub("[ \t]", ""):lower()..","; |
55 return field:find(","..token:lower()..",", 1, true) ~= nil; |
57 return field:find(","..token:lower()..",", 1, true) ~= nil; |
56 end |
58 end |
57 |
59 |
58 |
60 return { |
59 |
61 urlencode = urlencode, urldecode = urldecode; |
60 return http; |
62 formencode = formencode, formdecode = formdecode; |
|
63 contains_token = contains_token; |
|
64 }; |