author | Matthew Wild <mwild1@gmail.com> |
Mon, 29 Apr 2013 10:43:44 +0100 | |
changeset 5535 | 0df0afc041d7 |
parent 5471 | 34bfd26525f5 |
child 9507 | cfbea3064aa9 |
permissions | -rw-r--r-- |
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-- Prosody IM |
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-- Copyright (C) 2013 Florian Zeitz |
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-- |
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-- This project is MIT/X11 licensed. Please see the |
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-- COPYING file in the source package for more information. |
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-- |
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local format, char = string.format, string.char; |
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local pairs, ipairs, tonumber = pairs, ipairs, tonumber; |
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local t_insert, t_concat = table.insert, table.concat; |
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local function urlencode(s) |
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return s and (s:gsub("[^a-zA-Z0-9.~_-]", function (c) return format("%%%02x", c:byte()); end)); |
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end |
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local function urldecode(s) |
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return s and (s:gsub("%%(%x%x)", function (c) return char(tonumber(c,16)); end)); |
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end |
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|
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local function _formencodepart(s) |
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return s and (s:gsub("%W", function (c) |
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if c ~= " " then |
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return format("%%%02x", c:byte()); |
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else |
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return "+"; |
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end |
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end)); |
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end |
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local function formencode(form) |
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local result = {}; |
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if form[1] then -- Array of ordered { name, value } |
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for _, field in ipairs(form) do |
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t_insert(result, _formencodepart(field.name).."=".._formencodepart(field.value)); |
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end |
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else -- Unordered map of name -> value |
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for name, value in pairs(form) do |
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t_insert(result, _formencodepart(name).."=".._formencodepart(value)); |
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end |
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end |
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return t_concat(result, "&"); |
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end |
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local function formdecode(s) |
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if not s:match("=") then return urldecode(s); end |
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local r = {}; |
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for k, v in s:gmatch("([^=&]*)=([^&]*)") do |
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k, v = k:gsub("%+", "%%20"), v:gsub("%+", "%%20"); |
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k, v = urldecode(k), urldecode(v); |
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t_insert(r, { name = k, value = v }); |
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r[k] = v; |
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end |
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return r; |
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end |
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local function contains_token(field, token) |
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field = ","..field:gsub("[ \t]", ""):lower()..","; |
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return field:find(","..token:lower()..",", 1, true) ~= nil; |
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end |
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return { |
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urlencode = urlencode, urldecode = urldecode; |
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formencode = formencode, formdecode = formdecode; |
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contains_token = contains_token; |
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}; |