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util/httpstream.lua @ 3516:de54a7ab7e6e
MUC: fix timezone support when sending history
author | Kim Alvefur <zash@zash.se> |
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date | Tue, 12 Oct 2010 23:34:16 +0200 |
parent | 3496:9408d1e10e17 |
child | 3562:98f9dca3eb94 |
rev | line source |
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util.httpstream: Initial commit of the new HTTP parser.
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1 |
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2 local coroutine = coroutine; |
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3 local tonumber = tonumber; |
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4 |
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5 local deadroutine = coroutine.create(function() end); |
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6 coroutine.resume(deadroutine); |
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7 |
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8 module("httpstream") |
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9 |
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10 local function parser(data, success_cb) |
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11 local function readline() |
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12 local pos = data:find("\r\n", nil, true); |
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13 while not pos do |
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14 data = data..coroutine.yield(); |
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15 pos = data:find("\r\n", nil, true); |
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16 end |
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17 local r = data:sub(1, pos-1); |
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18 data = data:sub(pos+2); |
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19 return r; |
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20 end |
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21 local function readlength(n) |
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22 while #data < n do |
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23 data = data..coroutine.yield(); |
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24 end |
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25 local r = data:sub(1, n); |
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26 data = data:sub(n + 1); |
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27 return r; |
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28 end |
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29 |
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30 while true do |
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31 -- read status line |
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32 local status_line = readline(); |
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33 local method, path, httpversion = status_line:match("^(%S+)%s+(%S+)%s+HTTP/(%S+)$"); |
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34 if not method then coroutine.yield("invalid-status-line"); end |
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35 -- TODO parse url |
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36 |
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37 local headers = {}; -- read headers |
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38 while true do |
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39 local line = readline(); |
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40 if line == "" then break; end -- headers done |
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41 local key, val = line:match("^([^%s:]+): *(.*)$"); |
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42 if not key then coroutine.yield("invalid-header-line"); end -- TODO handle multi-line and invalid headers |
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43 key = key:lower(); |
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44 headers[key] = headers[key] and headers[key]..","..val or val; |
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45 end |
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46 |
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47 -- read body |
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48 local len = tonumber(headers["content-length"]); |
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49 len = len or 0; -- TODO check for invalid len |
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50 local body = readlength(len); |
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51 |
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52 success_cb({ |
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53 method = method; |
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54 path = path; |
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55 httpversion = httpversion; |
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56 headers = headers; |
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57 body = body; |
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58 }); |
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59 end |
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60 end |
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61 |
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62 function new(success_cb, error_cb) |
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63 local co = coroutine.create(parser); |
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64 return { |
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65 feed = function(self, data) |
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66 if not data then |
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67 co = deadroutine; |
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68 return error_cb(); |
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69 end |
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70 local success, result = coroutine.resume(co, data, success_cb); |
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71 if result then |
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72 co = deadroutine; |
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73 return error_cb(result); |
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74 end |
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75 end; |
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76 }; |
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77 end |
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78 |
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79 return _M; |