prosody
6ad9500a90a4
util/stanza.lua

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util/stanza.lua @ 1426:6ad9500a90a4

util.muc: Fixed incorrect parameters for a function call
author Waqas Hussain <waqas20@gmail.com>
date Fri, 26 Jun 2009 21:50:27 +0500
parent 1420:1576a5aa52f8
child 1431:9fe9ba693f4a
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rev   line source
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2c0b9e3c11c3 0.3->0.4
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1 -- Prosody IM v0.4
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90ce865eebd8 Update copyright notices for 2009
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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 --
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b1885732e979 GPL->MIT!
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5 -- This project is MIT/X11 licensed. Please see the
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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;
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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;
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22 local next = next;
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23 local print = print;
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da468ed49a7b Stanza preserialize/deserialize helpers, to strip and restore stanzas respectively. Fixed mod_vcard to use these.
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24 local unpack = unpack;
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25 local s_gsub = string.gsub;
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26 local s_char = string.char;
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27 local os = os;
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28
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29 local do_pretty_printing = not os.getenv("WINDIR");
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30 local getstyle, getstring = require "util.termcolours".getstyle, require "util.termcolours".getstring;
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31
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32 local log = require "util.logger".init("stanza");
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33
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34 module "stanza"
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35
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36 stanza_mt = {};
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37 stanza_mt.__index = stanza_mt;
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38
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39 function stanza(name, attr)
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40 local stanza = { name = name, attr = attr or {}, tags = {}, last_add = {}};
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41 return setmetatable(stanza, stanza_mt);
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42 end
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43
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44 function stanza_mt:query(xmlns)
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45 return self:tag("query", { xmlns = xmlns });
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46 end
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47
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48 function stanza_mt:body(text, attr)
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49 return self:tag("body", attr):text(text);
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50 end
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51
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52 function stanza_mt:tag(name, attrs)
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53 local s = stanza(name, attrs);
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54 (self.last_add[#self.last_add] or self):add_direct_child(s);
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55 t_insert(self.last_add, s);
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56 return self;
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57 end
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58
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59 function stanza_mt:text(text)
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60 (self.last_add[#self.last_add] or self):add_direct_child(text);
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61 return self;
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62 end
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63
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64 function stanza_mt:up()
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65 t_remove(self.last_add);
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66 return self;
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67 end
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68
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69 function stanza_mt:reset()
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70 local last_add = self.last_add;
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71 for i = 1,#last_add do
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72 last_add[i] = nil;
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73 end
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74 return self;
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75 end
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76
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77 function stanza_mt:add_direct_child(child)
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78 if type(child) == "table" then
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79 t_insert(self.tags, child);
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80 end
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81 t_insert(self, child);
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82 end
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83
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84 function stanza_mt:add_child(child)
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85 (self.last_add[#self.last_add] or self):add_direct_child(child);
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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:child_with_name(name)
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90 for _, child in ipairs(self.tags) do
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91 if child.name == name then return child; end
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92 end
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93 end
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94
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95 function stanza_mt:child_with_ns(ns)
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96 for _, child in ipairs(self.tags) do
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97 if child.attr.xmlns == ns then return child; end
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98 end
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99 end
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100
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101 function stanza_mt:children()
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102 local i = 0;
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103 return function (a)
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104 i = i + 1
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105 local v = a[i]
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106 if v then return v; end
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107 end, self, i;
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108
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109 end
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110 function stanza_mt:childtags()
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111 local i = 0;
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112 return function (a)
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113 i = i + 1
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114 local v = self.tags[i]
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115 if v then return v; end
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116 end, self.tags[1], i;
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117
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118 end
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119
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120 local xml_escape = (function()
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121 local escape_table = { ["'"] = "&apos;", ["\""] = "&quot;", ["<"] = "&lt;", [">"] = "&gt;", ["&"] = "&amp;" };
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122 return function(str) return (s_gsub(str, "['&<>\"]", escape_table)); end
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123 end)();
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124 local function _dostring(t, buf, self, xml_escape)
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125 local nsid, ns, attrk = 0;
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126 t_insert(buf, "<"..t.name);
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127 for k, v in pairs(t.attr) do
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128 ns, attrk = s_match(k, "^([^|]+)|(.+)$");
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129 if ns then
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130 nsid = nsid + 1;
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131 t_insert(buf, " xmlns:ns"..nsid.."='"..xml_escape(ns).."' ".."ns"..nsid..":"..attrk.."='"..xml_escape(v).."'");
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132 else
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133 t_insert(buf, " "..k.."='"..xml_escape(v).."'");
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134 end
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135 end
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136 t_insert(buf, ">");
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137 for n=1,#t do
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138 local child = t[n];
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139 if child.name then
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140 self(child, buf, self, xml_escape);
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141 else
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142 t_insert(buf, xml_escape(child));
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143 end
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144 end
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145 t_insert(buf, "</"..t.name..">");
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parents: 519
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146 end
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147 function stanza_mt.__tostring(t)
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148 local buf = {};
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149 _dostring(t, buf, _dostring, xml_escape);
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150 return t_concat(buf);
0
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151 end
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152
242
f15afbcbc55c Add new top_tag() method to stanzas
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153 function stanza_mt.top_tag(t)
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154 local attr_string = "";
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diff changeset
155 if t.attr then
338
804f5e62a41f Don't forget to escape XML in attributes. Thanks to the Postgres Q&amp;A room on conference.jabber.org :)
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parents: 262
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156 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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parents: 209
diff changeset
157 end
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parents: 209
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158 return s_format("<%s%s>", t.name, attr_string);
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159 end
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parents: 209
diff changeset
160
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161 function stanza_mt.get_text(t)
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162 if #t.tags == 0 then
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163 return t_concat(t);
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parents: 1416
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164 end
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Matthew Wild <mwild1@gmail.com>
parents: 1416
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165 end
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166
0
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167 function stanza_mt.__add(s1, s2)
180
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168 return s1:add_direct_child(s2);
0
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169 end
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170
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171
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172 do
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173 local id = 0;
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174 function new_id()
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175 id = id + 1;
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176 return "lx"..id;
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177 end
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178 end
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179
90
da468ed49a7b Stanza preserialize/deserialize helpers, to strip and restore stanzas respectively. Fixed mod_vcard to use these.
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parents: 70
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180 function preserialize(stanza)
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parents: 70
diff changeset
181 local s = { name = stanza.name, attr = stanza.attr };
da468ed49a7b Stanza preserialize/deserialize helpers, to strip and restore stanzas respectively. Fixed mod_vcard to use these.
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parents: 70
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182 for _, child in ipairs(stanza) do
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parents: 70
diff changeset
183 if type(child) == "table" then
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parents: 70
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184 t_insert(s, preserialize(child));
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parents: 70
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185 else
da468ed49a7b Stanza preserialize/deserialize helpers, to strip and restore stanzas respectively. Fixed mod_vcard to use these.
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parents: 70
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186 t_insert(s, child);
da468ed49a7b Stanza preserialize/deserialize helpers, to strip and restore stanzas respectively. Fixed mod_vcard to use these.
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parents: 70
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187 end
da468ed49a7b Stanza preserialize/deserialize helpers, to strip and restore stanzas respectively. Fixed mod_vcard to use these.
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parents: 70
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188 end
da468ed49a7b Stanza preserialize/deserialize helpers, to strip and restore stanzas respectively. Fixed mod_vcard to use these.
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parents: 70
diff changeset
189 return s;
da468ed49a7b Stanza preserialize/deserialize helpers, to strip and restore stanzas respectively. Fixed mod_vcard to use these.
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parents: 70
diff changeset
190 end
da468ed49a7b Stanza preserialize/deserialize helpers, to strip and restore stanzas respectively. Fixed mod_vcard to use these.
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parents: 70
diff changeset
191
da468ed49a7b Stanza preserialize/deserialize helpers, to strip and restore stanzas respectively. Fixed mod_vcard to use these.
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parents: 70
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192 function deserialize(stanza)
da468ed49a7b Stanza preserialize/deserialize helpers, to strip and restore stanzas respectively. Fixed mod_vcard to use these.
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parents: 70
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193 -- Set metatable
91
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parents: 90
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194 if stanza then
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parents: 1151
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195 local attr = stanza.attr;
957a81b72cb2 util.stanza: Remove numeric attributes while deserializing
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parents: 1151
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196 for i=1,#attr do attr[i] = nil; end
91
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parents: 90
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197 setmetatable(stanza, stanza_mt);
90
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parents: 70
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198 for _, child in ipairs(stanza) do
da468ed49a7b Stanza preserialize/deserialize helpers, to strip and restore stanzas respectively. Fixed mod_vcard to use these.
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parents: 70
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199 if type(child) == "table" then
91
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parents: 90
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200 deserialize(child);
90
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parents: 70
diff changeset
201 end
da468ed49a7b Stanza preserialize/deserialize helpers, to strip and restore stanzas respectively. Fixed mod_vcard to use these.
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parents: 70
diff changeset
202 end
91
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203 if not stanza.tags then
6d66eb6b24cb Fixed: util.stanza.deserialize now handles nil stanzas
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parents: 90
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204 -- Rebuild tags
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205 local tags = {};
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parents: 90
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206 for _, child in ipairs(stanza) do
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diff changeset
207 if type(child) == "table" then
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parents: 90
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208 t_insert(tags, child);
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parents: 90
diff changeset
209 end
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parents: 90
diff changeset
210 end
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parents: 90
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211 stanza.tags = tags;
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parents: 627
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212 if not stanza.last_add then
734994b61907 Restore fix for missing last_add on deserialized stanzas. Thanks to tsing for discovering.
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parents: 627
diff changeset
213 stanza.last_add = {};
734994b61907 Restore fix for missing last_add on deserialized stanzas. Thanks to tsing for discovering.
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parents: 627
diff changeset
214 end
91
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parents: 90
diff changeset
215 end
90
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parents: 70
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216 end
da468ed49a7b Stanza preserialize/deserialize helpers, to strip and restore stanzas respectively. Fixed mod_vcard to use these.
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parents: 70
diff changeset
217
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parents: 70
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218 return stanza;
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parents: 70
diff changeset
219 end
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diff changeset
220
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221 function clone(stanza)
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222 local lookup_table = {};
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223 local function _copy(object)
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224 if type(object) ~= "table" then
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225 return object;
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226 elseif lookup_table[object] then
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227 return lookup_table[object];
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228 end
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229 local new_table = {};
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230 lookup_table[object] = new_table;
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diff changeset
231 for index, value in pairs(object) do
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232 new_table[_copy(index)] = _copy(value);
b01fd698495e util/stanza: Added clone function
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233 end
b01fd698495e util/stanza: Added clone function
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234 return setmetatable(new_table, getmetatable(object));
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235 end
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236 return _copy(stanza)
b01fd698495e util/stanza: Added clone function
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237 end
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238
0
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239 function message(attr, body)
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240 if not body then
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241 return stanza("message", attr);
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242 else
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243 return stanza("message", attr):tag("body"):text(body);
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244 end
3e3171b59028 First commit, where do you want to go tomorrow?
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245 end
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246 function iq(attr)
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247 if attr and not attr.id then attr.id = new_id(); end
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248 return stanza("iq", attr or { id = new_id() });
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249 end
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250
3e3171b59028 First commit, where do you want to go tomorrow?
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251 function reply(orig)
209
e9de0803676d Part one of internal component support
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parents: 181
diff changeset
252 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
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253 end
3e3171b59028 First commit, where do you want to go tomorrow?
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254
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parents: 964
diff changeset
255 function error_reply(orig, type, condition, message)
70
a6c00467a3f8 Fixed typo in variable name
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parents: 62
diff changeset
256 local t = reply(orig);
60
44800be871f5 User registration, etc (jabber:iq:register)
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parents: 30
diff changeset
257 t.attr.type = "error";
44800be871f5 User registration, etc (jabber:iq:register)
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parents: 30
diff changeset
258 t:tag("error", {type = type})
44800be871f5 User registration, etc (jabber:iq:register)
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parents: 30
diff changeset
259 :tag(condition, {xmlns = "urn:ietf:params:xml:ns:xmpp-stanzas"}):up();
44800be871f5 User registration, etc (jabber:iq:register)
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parents: 30
diff changeset
260 if (message) then t:tag("text"):text(message):up(); end
44800be871f5 User registration, etc (jabber:iq:register)
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parents: 30
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261 return t; -- stanza ready for adding app-specific errors
44800be871f5 User registration, etc (jabber:iq:register)
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parents: 30
diff changeset
262 end
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parents: 30
diff changeset
263
0
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diff changeset
264 function presence(attr)
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265 return stanza("presence", attr);
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266 end
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267
262
8c73fb2ff4a2 A treat for Linux users ;)
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parents: 251
diff changeset
268 if do_pretty_printing then
8c73fb2ff4a2 A treat for Linux users ;)
Matthew Wild <mwild1@gmail.com>
parents: 251
diff changeset
269 local style_attrk = getstyle("yellow");
8c73fb2ff4a2 A treat for Linux users ;)
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parents: 251
diff changeset
270 local style_attrv = getstyle("red");
8c73fb2ff4a2 A treat for Linux users ;)
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parents: 251
diff changeset
271 local style_tagname = getstyle("red");
8c73fb2ff4a2 A treat for Linux users ;)
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parents: 251
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272 local style_punc = getstyle("magenta");
8c73fb2ff4a2 A treat for Linux users ;)
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parents: 251
diff changeset
273
8c73fb2ff4a2 A treat for Linux users ;)
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parents: 251
diff changeset
274 local attr_format = " "..getstring(style_attrk, "%s")..getstring(style_punc, "=")..getstring(style_attrv, "'%s'");
8c73fb2ff4a2 A treat for Linux users ;)
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parents: 251
diff changeset
275 local top_tag_format = getstring(style_punc, "<")..getstring(style_tagname, "%s").."%s"..getstring(style_punc, ">");
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parents: 251
diff changeset
276 --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, ">");
8c73fb2ff4a2 A treat for Linux users ;)
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parents: 251
diff changeset
277 local tag_format = top_tag_format.."%s"..getstring(style_punc, "</")..getstring(style_tagname, "%s")..getstring(style_punc, ">");
8c73fb2ff4a2 A treat for Linux users ;)
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parents: 251
diff changeset
278 function stanza_mt.pretty_print(t)
8c73fb2ff4a2 A treat for Linux users ;)
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parents: 251
diff changeset
279 local children_text = "";
8c73fb2ff4a2 A treat for Linux users ;)
Matthew Wild <mwild1@gmail.com>
parents: 251
diff changeset
280 for n, child in ipairs(t) do
8c73fb2ff4a2 A treat for Linux users ;)
Matthew Wild <mwild1@gmail.com>
parents: 251
diff changeset
281 if type(child) == "string" then
8c73fb2ff4a2 A treat for Linux users ;)
Matthew Wild <mwild1@gmail.com>
parents: 251
diff changeset
282 children_text = children_text .. xml_escape(child);
8c73fb2ff4a2 A treat for Linux users ;)
Matthew Wild <mwild1@gmail.com>
parents: 251
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283 else
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284 children_text = children_text .. child:pretty_print();
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285 end
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286 end
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287
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288 local attr_string = "";
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289 if t.attr then
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290 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
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291 end
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292 return s_format(tag_format, t.name, attr_string, children_text, t.name);
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293 end
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294
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295 function stanza_mt.pretty_top_tag(t)
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296 local attr_string = "";
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297 if t.attr then
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298 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
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299 end
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300 return s_format(top_tag_format, t.name, attr_string);
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301 end
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302 else
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303 -- Sorry, fresh out of colours for you guys ;)
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304 stanza_mt.pretty_print = stanza_mt.__tostring;
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305 stanza_mt.pretty_top_tag = stanza_mt.top_tag;
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306 end
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307
90
da468ed49a7b Stanza preserialize/deserialize helpers, to strip and restore stanzas respectively. Fixed mod_vcard to use these.
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308 return _M;