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1 |
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2 local setmetatable = setmetatable; |
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3 local pcall = pcall; |
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4 local type = type; |
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5 local t_concat = table.concat; |
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6 local print = print; |
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7 |
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8 local socket_url = require "socket.url"; |
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9 local http = require "socket.http"; |
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10 local ltn12 = require "ltn12"; |
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11 |
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12 --local json = require "json"; |
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13 local json = module:require("couchdb/json"); |
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14 |
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15 --module("couchdb") |
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16 local _M = {}; |
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17 |
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18 local function urlcat(url, path) |
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19 return url:gsub("/*$", "").."/"..path:gsub("^/*", ""); |
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20 end |
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21 |
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22 local doc_mt = {}; |
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23 doc_mt.__index = doc_mt; |
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24 |
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25 function doc_mt:get() |
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26 return self.db:get(socket_url.escape(self.id)); |
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27 end |
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28 function doc_mt:put(val) |
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29 return self.db:put(socket_url.escape(self.id), val); |
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30 end |
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31 function doc_mt:__tostring() |
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32 return "couchdb.doc("..self.url..")"; |
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33 end |
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34 |
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35 |
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36 local db_mt = {}; |
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37 db_mt.__index = db_mt; |
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38 |
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39 function db_mt:__tostring() |
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40 return "couchdb.db("..self.url..")"; |
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41 end |
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42 function db_mt:doc(id) |
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43 local url = urlcat(self.url, socket_url.escape(id)); |
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44 return setmetatable({ url = url, db = self, id = id }, doc_mt); |
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45 end |
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46 function db_mt:get(id) |
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47 local url = urlcat(self.url, id); |
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48 local a,b = http.request(url); |
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49 local r,x = pcall(json.decode, a); |
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50 if r then a = x; end |
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51 return a,b; |
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52 end |
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53 function db_mt:put(id, value) |
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54 local url = urlcat(self.url, id); |
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55 if type(value) == "table" then |
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56 value = json.encode(value); |
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57 elseif value ~= nil and type(value) ~= "string" then |
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58 return nil, "Invalid type"; |
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59 end |
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60 local t = {}; |
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61 local a,b = http.request { |
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62 url = url, |
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63 sink = ltn12.sink.table(t), |
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64 source = ltn12.source.string(value), |
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65 method = "PUT", |
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66 headers = { |
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67 ["Content-Length"] = #value, |
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68 ["Content-Type"] = "application/json" |
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69 } |
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70 }; |
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71 a = t_concat(t); |
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72 local r,x = pcall(json.decode, a); |
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73 if r then a = x; end |
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74 return a,b; |
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75 end |
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76 |
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77 |
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78 local server_mt = {}; |
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79 server_mt.__index = server_mt; |
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80 |
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81 function server_mt:db(name) |
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82 local url = urlcat(self.url, socket_url.escape(name)); |
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83 return setmetatable({ url = url }, db_mt); |
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84 end |
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85 function server_mt:__tostring() |
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86 return "couchdb.server("..self.url..")"; |
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87 end |
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88 |
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89 |
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90 function _M.server(url) |
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91 return setmetatable({ url = url }, server_mt); |
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92 end |
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93 function _M.db(url) |
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94 return setmetatable({ url = url }, db_mt); |
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95 end |
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96 |
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97 return _M; |
