prosody
9ddb344b9fab
util/http.lua

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util/http.lua @ 13039:9ddb344b9fab

util.human.io: Allow defining per column ellipsis function As an alternative to doing it in the mapper function. Could be useful in cases where one may want to put the ellipsis in the middle or beginning instead of the start.
author Kim Alvefur <zash@zash.se>
date Fri, 07 Apr 2023 13:00:58 +0200
parent 9785:ff88b03c343f
child 13124:f15e23840780
Ignore whitespace changes - Everywhere: Within whitespace: At end of lines:
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cc9d460aa779 util.http: New module for HTTP helper functions
Florian Zeitz <florob@babelmonkeys.de>
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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 = pairs, ipairs;
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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 url_codes = {};
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13 for i = 0, 255 do
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14 local c = char(i);
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15 local u = format("%%%02x", i);
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16 url_codes[c] = u;
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17 url_codes[u] = c;
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18 url_codes[u:upper()] = c;
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19 end
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20 local function urlencode(s)
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21 return s and (s:gsub("[^a-zA-Z0-9.~_-]", url_codes));
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22 end
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23 local function urldecode(s)
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24 return s and (s:gsub("%%%x%x", url_codes));
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25 end
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26
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27 local function _formencodepart(s)
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28 return s and (urlencode(s):gsub("%%20", "+"));
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29 end
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30
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31 local function formencode(form)
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32 local result = {};
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33 if form[1] then -- Array of ordered { name, value }
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34 for _, field in ipairs(form) do
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35 t_insert(result, _formencodepart(field.name).."=".._formencodepart(field.value));
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36 end
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37 else -- Unordered map of name -> value
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38 for name, value in pairs(form) do
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39 t_insert(result, _formencodepart(name).."=".._formencodepart(value));
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40 end
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41 end
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42 return t_concat(result, "&");
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43 end
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44
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45 local function formdecode(s)
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46 if not s:match("=") then return urldecode(s); end
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47 local r = {};
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48 for k, v in s:gmatch("([^=&]*)=([^&]*)") do
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49 k, v = k:gsub("%+", "%%20"), v:gsub("%+", "%%20");
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50 k, v = urldecode(k), urldecode(v);
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51 t_insert(r, { name = k, value = v });
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52 r[k] = v;
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53 end
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54 return r;
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55 end
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56
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57 local function contains_token(field, token)
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58 field = ","..field:gsub("[ \t]", ""):lower()..",";
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59 return field:find(","..token:lower()..",", 1, true) ~= nil;
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60 end
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61
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62 local function normalize_path(path, is_dir)
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63 if is_dir then
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64 if path:sub(-1,-1) ~= "/" then path = path.."/"; end
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65 else
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66 if path:sub(-1,-1) == "/" then path = path:sub(1, -2); end
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67 end
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68 if path:sub(1,1) ~= "/" then path = "/"..path; end
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69 return path;
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70 end
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71
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72 return {
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73 urlencode = urlencode, urldecode = urldecode;
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74 formencode = formencode, formdecode = formdecode;
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75 contains_token = contains_token;
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76 normalize_path = normalize_path;
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77 };