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util/http.lua @ 6465:ab68bb837fe0
Merge 0.10->trunk
author | Kim Alvefur <zash@zash.se> |
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date | Sun, 05 Oct 2014 15:37:46 +0200 |
parent | 5471:34bfd26525f5 |
child | 9504:cfbea3064aa9 |
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1 -- Prosody IM |
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2 -- Copyright (C) 2013 Florian Zeitz |
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3 -- |
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4 -- This project is MIT/X11 licensed. Please see the |
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5 -- COPYING file in the source package for more information. |
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6 -- |
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7 |
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8 local format, char = string.format, string.char; |
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9 local pairs, ipairs, tonumber = pairs, ipairs, tonumber; |
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10 local t_insert, t_concat = table.insert, table.concat; |
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11 |
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12 local function urlencode(s) |
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13 return s and (s:gsub("[^a-zA-Z0-9.~_-]", function (c) return format("%%%02x", c:byte()); end)); |
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14 end |
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15 local function urldecode(s) |
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16 return s and (s:gsub("%%(%x%x)", function (c) return char(tonumber(c,16)); end)); |
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17 end |
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18 |
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19 local function _formencodepart(s) |
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20 return s and (s:gsub("%W", function (c) |
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21 if c ~= " " then |
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22 return format("%%%02x", c:byte()); |
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23 else |
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24 return "+"; |
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25 end |
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26 end)); |
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27 end |
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28 |
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29 local function formencode(form) |
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30 local result = {}; |
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31 if form[1] then -- Array of ordered { name, value } |
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32 for _, field in ipairs(form) do |
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33 t_insert(result, _formencodepart(field.name).."=".._formencodepart(field.value)); |
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34 end |
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35 else -- Unordered map of name -> value |
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36 for name, value in pairs(form) do |
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37 t_insert(result, _formencodepart(name).."=".._formencodepart(value)); |
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38 end |
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39 end |
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40 return t_concat(result, "&"); |
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41 end |
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42 |
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43 local function formdecode(s) |
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44 if not s:match("=") then return urldecode(s); end |
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45 local r = {}; |
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46 for k, v in s:gmatch("([^=&]*)=([^&]*)") do |
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47 k, v = k:gsub("%+", "%%20"), v:gsub("%+", "%%20"); |
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48 k, v = urldecode(k), urldecode(v); |
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49 t_insert(r, { name = k, value = v }); |
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50 r[k] = v; |
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51 end |
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52 return r; |
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53 end |
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54 |
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55 local function contains_token(field, token) |
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56 field = ","..field:gsub("[ \t]", ""):lower()..","; |
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57 return field:find(","..token:lower()..",", 1, true) ~= nil; |
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58 end |
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59 |
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60 return { |
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61 urlencode = urlencode, urldecode = urldecode; |
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62 formencode = formencode, formdecode = formdecode; |
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63 contains_token = contains_token; |
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64 }; |