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util/stanza.lua @ 4636:41983ec223f0
mod_http: Include handlers of non-global modules.
author | Waqas Hussain <waqas20@gmail.com> |
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date | Sat, 21 Apr 2012 18:23:44 +0500 |
parent | 4462:2ee422bdafbe |
child | 4749:b9de59ea8dad |
rev | line source |
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1 -- Prosody IM |
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2 -- Copyright (C) 2008-2010 Matthew Wild |
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3 -- Copyright (C) 2008-2010 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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util.stanza: Don't add xmlns to tags when serializing if same as the parent tag's xmlns. Should hopefully shut up Gajim once and for all :)
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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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Stanza preserialize/deserialize helpers, to strip and restore stanzas respectively. Fixed mod_vcard to use these.
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24 local unpack = unpack; |
4 | 25 local s_gsub = string.gsub; |
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util.stanza: Rewrote stanza_mt.__tostring. 20-30% faster stanza serialization. - #optimization
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26 local s_char = string.char; |
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27 local s_find = string.find; |
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28 local os = os; |
145 | 29 |
262 | 30 local do_pretty_printing = not os.getenv("WINDIR"); |
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31 local getstyle, getstring; |
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32 if do_pretty_printing then |
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33 local ok, termcolours = pcall(require, "util.termcolours"); |
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34 if ok then |
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35 getstyle, getstring = termcolours.getstyle, termcolours.getstring; |
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36 else |
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37 do_pretty_printing = nil; |
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38 end |
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39 end |
262 | 40 |
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41 local xmlns_stanzas = "urn:ietf:params:xml:ns:xmpp-stanzas"; |
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42 |
0 | 43 module "stanza" |
44 | |
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45 stanza_mt = { __type = "stanza" }; |
0 | 46 stanza_mt.__index = stanza_mt; |
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47 local stanza_mt = stanza_mt; |
0 | 48 |
49 function stanza(name, attr) | |
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50 local stanza = { name = name, attr = attr or {}, tags = {} }; |
0 | 51 return setmetatable(stanza, stanza_mt); |
52 end | |
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53 local stanza = stanza; |
0 | 54 |
55 function stanza_mt:query(xmlns) | |
56 return self:tag("query", { xmlns = xmlns }); | |
57 end | |
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58 |
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59 function stanza_mt:body(text, attr) |
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60 return self:tag("body", attr):text(text); |
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61 end |
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62 |
0 | 63 function stanza_mt:tag(name, attrs) |
64 local s = stanza(name, attrs); | |
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65 local last_add = self.last_add; |
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66 if not last_add then last_add = {}; self.last_add = last_add; end |
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67 (last_add[#last_add] or self):add_direct_child(s); |
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68 t_insert(last_add, s); |
0 | 69 return self; |
70 end | |
71 | |
72 function stanza_mt:text(text) | |
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73 local last_add = self.last_add; |
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74 (last_add and last_add[#last_add] or self):add_direct_child(text); |
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75 return self; |
0 | 76 end |
77 | |
78 function stanza_mt:up() | |
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79 local last_add = self.last_add; |
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80 if last_add then t_remove(last_add); end |
0 | 81 return self; |
82 end | |
83 | |
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84 function stanza_mt:reset() |
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85 self.last_add = nil; |
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86 return self; |
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87 end |
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88 |
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89 function stanza_mt:add_direct_child(child) |
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90 if type(child) == "table" then |
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91 t_insert(self.tags, child); |
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92 end |
0 | 93 t_insert(self, child); |
94 end | |
95 | |
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96 function stanza_mt:add_child(child) |
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97 local last_add = self.last_add; |
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98 (last_add and last_add[#last_add] or self):add_direct_child(child); |
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99 return self; |
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100 end |
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101 |
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102 function stanza_mt:get_child(name, xmlns) |
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103 for _, child in ipairs(self.tags) do |
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104 if (not name or child.name == name) |
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105 and ((not xmlns and self.attr.xmlns == child.attr.xmlns) |
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106 or child.attr.xmlns == xmlns) then |
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107 |
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108 return child; |
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109 end |
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110 end |
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111 end |
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112 |
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113 function stanza_mt:get_child_text(name, xmlns) |
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114 local tag = self:get_child(name, xmlns); |
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115 if tag then |
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116 return tag:get_text(); |
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117 end |
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118 return nil; |
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119 end |
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120 |
0 | 121 function stanza_mt:child_with_name(name) |
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122 for _, child in ipairs(self.tags) do |
0 | 123 if child.name == name then return child; end |
124 end | |
125 end | |
126 | |
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127 function stanza_mt:child_with_ns(ns) |
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128 for _, child in ipairs(self.tags) do |
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129 if child.attr.xmlns == ns then return child; end |
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130 end |
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131 end |
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132 |
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133 function stanza_mt:children() |
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134 local i = 0; |
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135 return function (a) |
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136 i = i + 1 |
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137 return a[i]; |
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138 end, self, i; |
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139 end |
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140 |
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141 function stanza_mt:childtags(name, xmlns) |
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142 xmlns = xmlns or self.attr.xmlns; |
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143 local tags = self.tags; |
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144 local start_i, max_i = 1, #tags; |
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145 return function () |
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146 for i = start_i, max_i do |
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147 local v = tags[i]; |
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148 if (not name or v.name == name) |
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149 and (not xmlns or xmlns == v.attr.xmlns) then |
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150 start_i = i+1; |
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151 return v; |
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152 end |
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153 end |
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154 end; |
2 | 155 end |
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156 |
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157 function stanza_mt:maptags(callback) |
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158 local tags, curr_tag = self.tags, 1; |
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159 local n_children, n_tags = #self, #tags; |
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160 |
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161 local i = 1; |
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162 while curr_tag <= n_tags do |
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163 if self[i] == tags[curr_tag] then |
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164 local ret = callback(self[i]); |
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165 if ret == nil then |
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166 t_remove(self, i); |
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167 t_remove(tags, curr_tag); |
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168 n_children = n_children - 1; |
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169 n_tags = n_tags - 1; |
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170 else |
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171 self[i] = ret; |
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172 tags[i] = ret; |
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173 end |
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174 i = i + 1; |
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175 curr_tag = curr_tag + 1; |
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176 end |
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177 end |
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178 return self; |
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179 end |
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180 |
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181 local xml_escape |
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182 do |
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183 local escape_table = { ["'"] = "'", ["\""] = """, ["<"] = "<", [">"] = ">", ["&"] = "&" }; |
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184 function xml_escape(str) return (s_gsub(str, "['&<>\"]", escape_table)); end |
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185 _M.xml_escape = xml_escape; |
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186 end |
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187 |
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188 local function _dostring(t, buf, self, xml_escape, parentns) |
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189 local nsid = 0; |
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190 local name = t.name |
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191 t_insert(buf, "<"..name); |
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192 for k, v in pairs(t.attr) do |
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193 if s_find(k, "\1", 1, true) then |
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194 local ns, attrk = s_match(k, "^([^\1]*)\1?(.*)$"); |
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195 nsid = nsid + 1; |
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196 t_insert(buf, " xmlns:ns"..nsid.."='"..xml_escape(ns).."' ".."ns"..nsid..":"..attrk.."='"..xml_escape(v).."'"); |
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197 elseif not(k == "xmlns" and v == parentns) then |
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198 t_insert(buf, " "..k.."='"..xml_escape(v).."'"); |
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199 end |
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200 end |
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201 local len = #t; |
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202 if len == 0 then |
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203 t_insert(buf, "/>"); |
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204 else |
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205 t_insert(buf, ">"); |
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206 for n=1,len do |
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207 local child = t[n]; |
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208 if child.name then |
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209 self(child, buf, self, xml_escape, t.attr.xmlns); |
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210 else |
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211 t_insert(buf, xml_escape(child)); |
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212 end |
4 | 213 end |
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214 t_insert(buf, "</"..name..">"); |
0 | 215 end |
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216 end |
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217 function stanza_mt.__tostring(t) |
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218 local buf = {}; |
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219 _dostring(t, buf, _dostring, xml_escape, nil); |
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220 return t_concat(buf); |
0 | 221 end |
222 | |
242
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223 function stanza_mt.top_tag(t) |
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224 local attr_string = ""; |
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225 if t.attr then |
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226 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 |
242
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227 end |
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228 return s_format("<%s%s>", t.name, attr_string); |
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229 end |
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230 |
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231 function stanza_mt.get_text(t) |
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232 if #t.tags == 0 then |
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233 return t_concat(t); |
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234 end |
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235 end |
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236 |
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237 function stanza_mt.get_error(stanza) |
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238 local type, condition, text; |
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239 |
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240 local error_tag = stanza:get_child("error"); |
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241 if not error_tag then |
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242 return nil, nil, nil; |
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243 end |
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244 type = error_tag.attr.type; |
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245 |
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246 for child in error_tag:childtags() do |
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247 if child.attr.xmlns == xmlns_stanzas then |
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248 if not text and child.name == "text" then |
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249 text = child:get_text(); |
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250 elseif not condition then |
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251 condition = child.name; |
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252 end |
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253 if condition and text then |
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254 break; |
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255 end |
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256 end |
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257 end |
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258 return type, condition or "undefined-condition", text; |
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259 end |
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260 |
0 | 261 do |
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262 local id = 0; |
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263 function new_id() |
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264 id = id + 1; |
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265 return "lx"..id; |
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266 end |
0 | 267 end |
268 | |
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269 function preserialize(stanza) |
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270 local s = { name = stanza.name, attr = stanza.attr }; |
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271 for _, child in ipairs(stanza) do |
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272 if type(child) == "table" then |
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273 t_insert(s, preserialize(child)); |
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274 else |
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275 t_insert(s, child); |
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276 end |
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277 end |
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278 return s; |
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279 end |
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280 |
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281 function deserialize(stanza) |
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282 -- Set metatable |
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283 if stanza then |
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284 local attr = stanza.attr; |
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285 for i=1,#attr do attr[i] = nil; end |
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286 local attrx = {}; |
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287 for att in pairs(attr) do |
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288 if s_find(att, "|", 1, true) and not s_find(att, "\1", 1, true) then |
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289 local ns,na = s_match(att, "^([^|]+)|(.+)$"); |
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290 attrx[ns.."\1"..na] = attr[att]; |
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291 attr[att] = nil; |
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292 end |
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293 end |
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294 for a,v in pairs(attrx) do |
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295 attr[a] = v; |
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296 end |
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297 setmetatable(stanza, stanza_mt); |
90
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298 for _, child in ipairs(stanza) do |
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299 if type(child) == "table" then |
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300 deserialize(child); |
90
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301 end |
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302 end |
91
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303 if not stanza.tags then |
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304 -- Rebuild tags |
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305 local tags = {}; |
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306 for _, child in ipairs(stanza) do |
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307 if type(child) == "table" then |
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308 t_insert(tags, child); |
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309 end |
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310 end |
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311 stanza.tags = tags; |
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312 end |
90
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313 end |
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314 |
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315 return stanza; |
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316 end |
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317 |
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318 local function _clone(stanza) |
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319 local attr, tags = {}, {}; |
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320 for k,v in pairs(stanza.attr) do attr[k] = v; end |
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321 local new = { name = stanza.name, attr = attr, tags = tags }; |
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322 for i=1,#stanza do |
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323 local child = stanza[i]; |
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324 if child.name then |
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325 child = _clone(child); |
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326 t_insert(tags, child); |
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327 end |
4179
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328 t_insert(new, child); |
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329 end |
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330 return setmetatable(new, stanza_mt); |
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331 end |
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332 clone = _clone; |
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333 |
0 | 334 function message(attr, body) |
335 if not body then | |
336 return stanza("message", attr); | |
337 else | |
3502
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338 return stanza("message", attr):tag("body"):text(body):up(); |
0 | 339 end |
340 end | |
341 function iq(attr) | |
342 if attr and not attr.id then attr.id = new_id(); end | |
343 return stanza("iq", attr or { id = new_id() }); | |
344 end | |
345 | |
346 function reply(orig) | |
209
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347 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 | 348 end |
349 | |
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350 do |
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351 local xmpp_stanzas_attr = { xmlns = xmlns_stanzas }; |
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352 function error_reply(orig, type, condition, message) |
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353 local t = reply(orig); |
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354 t.attr.type = "error"; |
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355 t:tag("error", {type = type}) --COMPAT: Some day xmlns:stanzas goes here |
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356 :tag(condition, xmpp_stanzas_attr):up(); |
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357 if (message) then t:tag("text", xmpp_stanzas_attr):text(message):up(); end |
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358 return t; -- stanza ready for adding app-specific errors |
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359 end |
60
44800be871f5
User registration, etc (jabber:iq:register)
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diff
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360 end |
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|
361 |
0 | 362 function presence(attr) |
363 return stanza("presence", attr); | |
364 end | |
365 | |
262 | 366 if do_pretty_printing then |
367 local style_attrk = getstyle("yellow"); | |
368 local style_attrv = getstyle("red"); | |
369 local style_tagname = getstyle("red"); | |
370 local style_punc = getstyle("magenta"); | |
371 | |
372 local attr_format = " "..getstring(style_attrk, "%s")..getstring(style_punc, "=")..getstring(style_attrv, "'%s'"); | |
373 local top_tag_format = getstring(style_punc, "<")..getstring(style_tagname, "%s").."%s"..getstring(style_punc, ">"); | |
374 --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, ">"); | |
375 local tag_format = top_tag_format.."%s"..getstring(style_punc, "</")..getstring(style_tagname, "%s")..getstring(style_punc, ">"); | |
376 function stanza_mt.pretty_print(t) | |
377 local children_text = ""; | |
378 for n, child in ipairs(t) do | |
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379 if type(child) == "string" then |
262 | 380 children_text = children_text .. xml_escape(child); |
381 else | |
382 children_text = children_text .. child:pretty_print(); | |
383 end | |
384 end | |
385 | |
386 local attr_string = ""; | |
387 if t.attr then | |
388 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 | |
389 end | |
390 return s_format(tag_format, t.name, attr_string, children_text, t.name); | |
391 end | |
392 | |
393 function stanza_mt.pretty_top_tag(t) | |
394 local attr_string = ""; | |
395 if t.attr then | |
396 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 | |
397 end | |
398 return s_format(top_tag_format, t.name, attr_string); | |
399 end | |
400 else | |
401 -- Sorry, fresh out of colours for you guys ;) | |
402 stanza_mt.pretty_print = stanza_mt.__tostring; | |
403 stanza_mt.pretty_top_tag = stanza_mt.top_tag; | |
404 end | |
405 | |
90
da468ed49a7b
Stanza preserialize/deserialize helpers, to strip and restore stanzas respectively. Fixed mod_vcard to use these.
Matthew Wild <mwild1@gmail.com>
parents:
70
diff
changeset
|
406 return _M; |