Sat, 16 May 2009 03:58:05 +0500
stanza_router: Added global function core_post_stanza
894 | 1 | -- Prosody IM v0.4 |
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2 | -- Copyright (C) 2008-2009 Matthew Wild |
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3 | -- Copyright (C) 2008-2009 Waqas Hussain |
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4 | -- |
758 | 5 | -- This project is MIT/X11 licensed. Please see the |
6 | -- COPYING file in the source package for more information. | |
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7 | -- |
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8 | |
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9 | |
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10 | local t_insert = table.insert; |
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11 | local t_concat = table.concat; |
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12 | local t_remove = table.remove; |
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13 | local t_concat = table.concat; |
23 | 14 | local s_format = string.format; |
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15 | local s_match = string.match; |
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16 | local tostring = tostring; |
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17 | local setmetatable = setmetatable; |
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18 | local getmetatable = getmetatable; |
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19 | local pairs = pairs; |
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20 | local ipairs = ipairs; |
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21 | local type = type; |
145 | 22 | local next = next; |
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23 | local print = print; |
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24 | local unpack = unpack; |
4 | 25 | local s_gsub = string.gsub; |
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26 | local os = os; |
145 | 27 | |
262 | 28 | local do_pretty_printing = not os.getenv("WINDIR"); |
29 | local getstyle, getstring = require "util.termcolours".getstyle, require "util.termcolours".getstring; | |
30 | ||
145 | 31 | local log = require "util.logger".init("stanza"); |
32 | ||
0 | 33 | module "stanza" |
34 | ||
35 | stanza_mt = {}; | |
36 | stanza_mt.__index = stanza_mt; | |
37 | ||
38 | function stanza(name, attr) | |
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39 | local stanza = { name = name, attr = attr or {}, tags = {}, last_add = {}}; |
0 | 40 | return setmetatable(stanza, stanza_mt); |
41 | end | |
42 | ||
43 | function stanza_mt:query(xmlns) | |
44 | return self:tag("query", { xmlns = xmlns }); | |
45 | end | |
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46 | |
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47 | function stanza_mt:body(text, attr) |
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48 | return self:tag("body", attr):text(text); |
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49 | end |
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50 | |
0 | 51 | function stanza_mt:tag(name, attrs) |
52 | local s = stanza(name, attrs); | |
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53 | (self.last_add[#self.last_add] or self):add_direct_child(s); |
0 | 54 | t_insert(self.last_add, s); |
55 | return self; | |
56 | end | |
57 | ||
58 | function stanza_mt:text(text) | |
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59 | (self.last_add[#self.last_add] or self):add_direct_child(text); |
0 | 60 | return self; |
61 | end | |
62 | ||
63 | function stanza_mt:up() | |
64 | t_remove(self.last_add); | |
65 | return self; | |
66 | end | |
67 | ||
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68 | function stanza_mt:reset() |
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69 | local last_add = self.last_add; |
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70 | for i = 1,#last_add do |
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71 | last_add[i] = nil; |
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72 | end |
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73 | return self; |
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74 | end |
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75 | |
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76 | function stanza_mt:add_direct_child(child) |
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77 | if type(child) == "table" then |
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78 | t_insert(self.tags, child); |
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79 | end |
0 | 80 | t_insert(self, child); |
81 | end | |
82 | ||
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83 | function stanza_mt:add_child(child) |
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84 | (self.last_add[#self.last_add] or self):add_direct_child(child); |
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85 | return self; |
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86 | end |
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87 | |
0 | 88 | function stanza_mt:child_with_name(name) |
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89 | for _, child in ipairs(self.tags) do |
0 | 90 | if child.name == name then return child; end |
91 | end | |
92 | end | |
93 | ||
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94 | function stanza_mt:child_with_ns(ns) |
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95 | for _, child in ipairs(self.tags) do |
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96 | if child.attr.xmlns == ns then return child; end |
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97 | end |
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98 | end |
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99 | |
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100 | function stanza_mt:children() |
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101 | local i = 0; |
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102 | return function (a) |
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103 | i = i + 1 |
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104 | local v = a[i] |
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105 | if v then return v; end |
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106 | end, self, i; |
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107 | |
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108 | end |
2 | 109 | function stanza_mt:childtags() |
110 | local i = 0; | |
111 | return function (a) | |
112 | i = i + 1 | |
113 | local v = self.tags[i] | |
114 | if v then return v; end | |
115 | end, self.tags[1], i; | |
116 | ||
117 | end | |
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118 | |
4 | 119 | do |
120 | local xml_entities = { ["'"] = "'", ["\""] = """, ["<"] = "<", [">"] = ">", ["&"] = "&" }; | |
121 | function xml_escape(s) return s_gsub(s, "['&<>\"]", xml_entities); end | |
122 | end | |
123 | ||
124 | local xml_escape = xml_escape; | |
125 | ||
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126 | local function dostring(t, buf, self, xml_escape) |
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127 | local nsid, ns, attrk = 0; |
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128 | t_insert(buf, "<"); |
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129 | t_insert(buf, t.name); |
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130 | for k, v in pairs(t.attr) do if type(k) == "string" then |
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131 | t_insert(buf, " "); |
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132 | ns, attrk = s_match(k, "^([^|]+)|(.+)$"); |
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133 | if ns then |
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134 | nsid = (nsid or -1) + 1; |
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135 | t_insert(buf, "xmlns:ns"..nsid); |
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136 | t_insert(buf, "='"); |
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137 | t_insert(buf, (xml_escape(tostring(ns)))); |
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138 | t_insert(buf, "' "); |
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139 | t_insert(buf, "ns"..nsid..":"..attrk); |
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140 | else |
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141 | t_insert(buf, k); |
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142 | end |
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143 | t_insert(buf, "='"); |
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144 | t_insert(buf, (xml_escape(tostring(v)))); |
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145 | t_insert(buf, "'"); |
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146 | end end |
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147 | t_insert(buf, ">"); |
0 | 148 | for n, child in ipairs(t) do |
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149 | if child.name then |
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150 | self(child, buf, self, xml_escape); |
4 | 151 | else |
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152 | t_insert(buf, (xml_escape(child))); |
4 | 153 | end |
0 | 154 | end |
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155 | t_insert(buf, "</"); |
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156 | t_insert(buf, t.name); |
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157 | t_insert(buf, ">"); |
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158 | end |
0 | 159 | |
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160 | function stanza_mt.__tostring(t) |
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161 | local buf = {}; |
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162 | dostring(t, buf, dostring, xml_escape); |
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163 | return t_concat(buf); |
0 | 164 | end |
165 | ||
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166 | |
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167 | function stanza_mt.top_tag(t) |
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168 | local attr_string = ""; |
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169 | if t.attr then |
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170 | for k, v in pairs(t.attr) do if type(k) == "string" then attr_string = attr_string .. s_format(" %s='%s'", k, xml_escape(tostring(v))); end end |
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171 | end |
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172 | return s_format("<%s%s>", t.name, attr_string); |
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173 | end |
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174 | |
0 | 175 | function stanza_mt.__add(s1, s2) |
180
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176 | return s1:add_direct_child(s2); |
0 | 177 | end |
178 | ||
179 | ||
180 | do | |
181 | local id = 0; | |
182 | function new_id() | |
183 | id = id + 1; | |
184 | return "lx"..id; | |
185 | end | |
186 | end | |
187 | ||
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188 | function preserialize(stanza) |
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189 | local s = { name = stanza.name, attr = stanza.attr }; |
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190 | for _, child in ipairs(stanza) do |
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191 | if type(child) == "table" then |
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192 | t_insert(s, preserialize(child)); |
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193 | else |
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194 | t_insert(s, child); |
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195 | end |
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196 | end |
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197 | return s; |
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198 | end |
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199 | |
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200 | function deserialize(stanza) |
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201 | -- Set metatable |
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202 | if stanza then |
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203 | setmetatable(stanza, stanza_mt); |
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204 | for _, child in ipairs(stanza) do |
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205 | if type(child) == "table" then |
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206 | deserialize(child); |
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207 | end |
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208 | end |
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209 | if not stanza.tags then |
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210 | -- Rebuild tags |
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211 | local tags = {}; |
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212 | for _, child in ipairs(stanza) do |
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213 | if type(child) == "table" then |
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214 | t_insert(tags, child); |
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215 | end |
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216 | end |
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217 | stanza.tags = tags; |
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218 | if not stanza.last_add then |
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219 | stanza.last_add = {}; |
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220 | end |
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221 | end |
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222 | end |
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223 | |
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224 | return stanza; |
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225 | end |
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226 | |
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227 | function clone(stanza) |
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228 | local lookup_table = {}; |
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229 | local function _copy(object) |
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230 | if type(object) ~= "table" then |
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231 | return object; |
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232 | elseif lookup_table[object] then |
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233 | return lookup_table[object]; |
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234 | end |
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235 | local new_table = {}; |
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236 | lookup_table[object] = new_table; |
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237 | for index, value in pairs(object) do |
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238 | new_table[_copy(index)] = _copy(value); |
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239 | end |
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240 | return setmetatable(new_table, getmetatable(object)); |
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241 | end |
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242 | return _copy(stanza) |
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243 | end |
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244 | |
0 | 245 | function message(attr, body) |
246 | if not body then | |
247 | return stanza("message", attr); | |
248 | else | |
249 | return stanza("message", attr):tag("body"):text(body); | |
250 | end | |
251 | end | |
252 | function iq(attr) | |
253 | if attr and not attr.id then attr.id = new_id(); end | |
254 | return stanza("iq", attr or { id = new_id() }); | |
255 | end | |
256 | ||
257 | function reply(orig) | |
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258 | return stanza(orig.name, orig.attr and { to = orig.attr.from, from = orig.attr.to, id = orig.attr.id, type = ((orig.name == "iq" and "result") or orig.attr.type) }); |
0 | 259 | end |
260 | ||
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261 | function error_reply(orig, type, condition, message) |
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262 | local t = reply(orig); |
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263 | t.attr.type = "error"; |
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264 | t:tag("error", {type = type}) |
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265 | :tag(condition, {xmlns = "urn:ietf:params:xml:ns:xmpp-stanzas"}):up(); |
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266 | if (message) then t:tag("text"):text(message):up(); end |
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267 | return t; -- stanza ready for adding app-specific errors |
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268 | end |
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269 | |
0 | 270 | function presence(attr) |
271 | return stanza("presence", attr); | |
272 | end | |
273 | ||
262 | 274 | if do_pretty_printing then |
275 | local style_attrk = getstyle("yellow"); | |
276 | local style_attrv = getstyle("red"); | |
277 | local style_tagname = getstyle("red"); | |
278 | local style_punc = getstyle("magenta"); | |
279 | ||
280 | local attr_format = " "..getstring(style_attrk, "%s")..getstring(style_punc, "=")..getstring(style_attrv, "'%s'"); | |
281 | local top_tag_format = getstring(style_punc, "<")..getstring(style_tagname, "%s").."%s"..getstring(style_punc, ">"); | |
282 | --local tag_format = getstring(style_punc, "<")..getstring(style_tagname, "%s").."%s"..getstring(style_punc, ">").."%s"..getstring(style_punc, "</")..getstring(style_tagname, "%s")..getstring(style_punc, ">"); | |
283 | local tag_format = top_tag_format.."%s"..getstring(style_punc, "</")..getstring(style_tagname, "%s")..getstring(style_punc, ">"); | |
284 | function stanza_mt.pretty_print(t) | |
285 | local children_text = ""; | |
286 | for n, child in ipairs(t) do | |
287 | if type(child) == "string" then | |
288 | children_text = children_text .. xml_escape(child); | |
289 | else | |
290 | children_text = children_text .. child:pretty_print(); | |
291 | end | |
292 | end | |
293 | ||
294 | local attr_string = ""; | |
295 | if t.attr then | |
296 | for k, v in pairs(t.attr) do if type(k) == "string" then attr_string = attr_string .. s_format(attr_format, k, tostring(v)); end end | |
297 | end | |
298 | return s_format(tag_format, t.name, attr_string, children_text, t.name); | |
299 | end | |
300 | ||
301 | function stanza_mt.pretty_top_tag(t) | |
302 | local attr_string = ""; | |
303 | if t.attr then | |
304 | for k, v in pairs(t.attr) do if type(k) == "string" then attr_string = attr_string .. s_format(attr_format, k, tostring(v)); end end | |
305 | end | |
306 | return s_format(top_tag_format, t.name, attr_string); | |
307 | end | |
308 | else | |
309 | -- Sorry, fresh out of colours for you guys ;) | |
310 | stanza_mt.pretty_print = stanza_mt.__tostring; | |
311 | stanza_mt.pretty_top_tag = stanza_mt.top_tag; | |
312 | end | |
313 | ||
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314 | return _M; |