prosody
43b140edfd84
util/stanza.lua

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util/stanza.lua @ 963:43b140edfd84

core.s2smanager: Look away... wait for it... now! Hopefully s2s should be back to normal.
author Matthew Wild <mwild1@gmail.com>
date Wed, 08 Apr 2009 20:01:53 +0100
parent 896:2c0b9e3c11c3
child 964:3296db2ad4a0
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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 os = os;
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27
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28 local do_pretty_printing = not os.getenv("WINDIR");
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29 local getstyle, getstring = require "util.termcolours".getstyle, require "util.termcolours".getstring;
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30
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31 local log = require "util.logger".init("stanza");
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32
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33 module "stanza"
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34
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35 stanza_mt = {};
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36 stanza_mt.__index = stanza_mt;
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37
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38 function stanza(name, attr)
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39 local stanza = { name = name, attr = attr or {}, tags = {}, last_add = {}};
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40 return setmetatable(stanza, stanza_mt);
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41 end
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42
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43 function stanza_mt:query(xmlns)
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44 return self:tag("query", { xmlns = xmlns });
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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
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51 function stanza_mt:tag(name, attrs)
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52 local s = stanza(name, attrs);
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53 (self.last_add[#self.last_add] or self):add_direct_child(s);
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54 t_insert(self.last_add, s);
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55 return self;
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56 end
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57
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58 function stanza_mt:text(text)
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59 (self.last_add[#self.last_add] or self):add_direct_child(text);
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60 return self;
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61 end
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62
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63 function stanza_mt:up()
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64 t_remove(self.last_add);
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65 return self;
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66 end
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67
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68 function stanza_mt:add_direct_child(child)
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69 if type(child) == "table" then
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70 t_insert(self.tags, child);
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71 end
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72 t_insert(self, child);
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73 end
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74
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75 function stanza_mt:add_child(child)
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76 (self.last_add[#self.last_add] or self):add_direct_child(child);
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77 return self;
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78 end
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79
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80 function stanza_mt:child_with_name(name)
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81 for _, child in ipairs(self.tags) do
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82 if child.name == name then return child; end
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83 end
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84 end
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85
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86 function stanza_mt:child_with_ns(ns)
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87 for _, child in ipairs(self.tags) do
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88 if child.attr.xmlns == ns then return child; end
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89 end
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90 end
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91
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92 function stanza_mt:children()
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93 local i = 0;
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94 return function (a)
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95 i = i + 1
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96 local v = a[i]
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97 if v then return v; end
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98 end, self, i;
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99
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100 end
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101 function stanza_mt:childtags()
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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 = self.tags[i]
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106 if v then return v; end
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107 end, self.tags[1], i;
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108
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109 end
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110
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111 do
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112 local xml_entities = { ["'"] = "&apos;", ["\""] = "&quot;", ["<"] = "&lt;", [">"] = "&gt;", ["&"] = "&amp;" };
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113 function xml_escape(s) return s_gsub(s, "['&<>\"]", xml_entities); end
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114 end
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115
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116 local xml_escape = xml_escape;
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117
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118 local function dostring(t, buf, self, xml_escape)
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119 local nsid, ns, attrk = 0;
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120 t_insert(buf, "<");
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121 t_insert(buf, t.name);
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122 for k, v in pairs(t.attr) do if type(k) == "string" then
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123 t_insert(buf, " ");
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124 ns, attrk = s_match(k, "^([^|]+)|(.+)$");
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125 if ns then
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126 nsid = (nsid or -1) + 1;
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127 t_insert(buf, "xmlns:ns"..nsid);
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128 t_insert(buf, "='");
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129 t_insert(buf, (xml_escape(tostring(ns))));
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130 t_insert(buf, "' ");
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131 t_insert(buf, "ns"..nsid..":"..attrk);
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132 else
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133 t_insert(buf, k);
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134 end
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135 t_insert(buf, "='");
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136 t_insert(buf, (xml_escape(tostring(v))));
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137 t_insert(buf, "'");
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138 end end
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139 t_insert(buf, ">");
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140 for n, child in ipairs(t) do
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141 if child.name then
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142 self(child, buf, self, xml_escape);
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143 else
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144 t_insert(buf, (xml_escape(child)));
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145 end
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146 end
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147 t_insert(buf, "</");
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148 t_insert(buf, t.name);
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149 t_insert(buf, ">");
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150 end
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151
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152 function stanza_mt.__tostring(t)
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diff changeset
153 local buf = {};
613
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154 dostring(t, buf, dostring, xml_escape);
626
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155 return t_concat(buf);
0
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156 end
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157
613
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parents: 519
diff changeset
158
242
f15afbcbc55c Add new top_tag() method to stanzas
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parents: 209
diff changeset
159 function stanza_mt.top_tag(t)
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parents: 209
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160 local attr_string = "";
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parents: 209
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161 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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162 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
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163 end
f15afbcbc55c Add new top_tag() method to stanzas
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parents: 209
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164 return s_format("<%s%s>", t.name, attr_string);
f15afbcbc55c Add new top_tag() method to stanzas
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parents: 209
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165 end
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parents: 209
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166
0
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167 function stanza_mt.__add(s1, s2)
180
d8b9a19d70eb Make add_child() behave as expected. Old add_child() is now add_direct_child()
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parents: 145
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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
3e3171b59028 First commit, where do you want to go tomorrow?
matthew
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172 do
3e3171b59028 First commit, where do you want to go tomorrow?
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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
3e3171b59028 First commit, where do you want to go tomorrow?
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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)
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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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
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183 if type(child) == "table" then
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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184 t_insert(s, preserialize(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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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
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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
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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
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191
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
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: 90
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195 setmetatable(stanza, stanza_mt);
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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196 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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197 if type(child) == "table" then
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parents: 90
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198 deserialize(child);
90
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parents: 70
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199 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
200 end
91
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parents: 90
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201 if not stanza.tags then
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parents: 90
diff changeset
202 -- Rebuild tags
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parents: 90
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203 local tags = {};
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parents: 90
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204 for _, child in ipairs(stanza) do
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parents: 90
diff changeset
205 if type(child) == "table" then
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parents: 90
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206 t_insert(tags, child);
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parents: 90
diff changeset
207 end
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parents: 90
diff changeset
208 end
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parents: 90
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209 stanza.tags = tags;
680
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parents: 627
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210 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
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211 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
212 end
91
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parents: 90
diff changeset
213 end
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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214 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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215
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216 return stanza;
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parents: 70
diff changeset
217 end
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parents: 70
diff changeset
218
829
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219 function clone(stanza)
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220 local lookup_table = {};
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221 local function _copy(object)
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parents: 776
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222 if type(object) ~= "table" then
b01fd698495e util/stanza: Added clone function
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223 return object;
b01fd698495e util/stanza: Added clone function
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parents: 776
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224 elseif lookup_table[object] then
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225 return lookup_table[object];
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226 end
b01fd698495e util/stanza: Added clone function
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227 local new_table = {};
b01fd698495e util/stanza: Added clone function
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228 lookup_table[object] = new_table;
b01fd698495e util/stanza: Added clone function
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229 for index, value in pairs(object) do
b01fd698495e util/stanza: Added clone function
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230 new_table[_copy(index)] = _copy(value);
b01fd698495e util/stanza: Added clone function
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231 end
b01fd698495e util/stanza: Added clone function
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232 return setmetatable(new_table, getmetatable(object));
b01fd698495e util/stanza: Added clone function
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233 end
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parents: 776
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234 return _copy(stanza)
b01fd698495e util/stanza: Added clone function
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235 end
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236
0
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237 function message(attr, body)
3e3171b59028 First commit, where do you want to go tomorrow?
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238 if not body then
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239 return stanza("message", attr);
3e3171b59028 First commit, where do you want to go tomorrow?
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240 else
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241 return stanza("message", attr):tag("body"):text(body);
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242 end
3e3171b59028 First commit, where do you want to go tomorrow?
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243 end
3e3171b59028 First commit, where do you want to go tomorrow?
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244 function iq(attr)
3e3171b59028 First commit, where do you want to go tomorrow?
matthew
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245 if attr and not attr.id then attr.id = new_id(); end
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246 return stanza("iq", attr or { id = new_id() });
3e3171b59028 First commit, where do you want to go tomorrow?
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247 end
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248
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249 function reply(orig)
209
e9de0803676d Part one of internal component support
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parents: 181
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250 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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251 end
3e3171b59028 First commit, where do you want to go tomorrow?
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252
60
44800be871f5 User registration, etc (jabber:iq:register)
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parents: 30
diff changeset
253 function error_reply(orig, type, condition, message, clone)
70
a6c00467a3f8 Fixed typo in variable name
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parents: 62
diff changeset
254 local t = reply(orig);
60
44800be871f5 User registration, etc (jabber:iq:register)
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parents: 30
diff changeset
255 t.attr.type = "error";
44800be871f5 User registration, etc (jabber:iq:register)
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parents: 30
diff changeset
256 -- TODO use clone
44800be871f5 User registration, etc (jabber:iq:register)
Waqas Hussain <waqas20@gmail.com>
parents: 30
diff changeset
257 t:tag("error", {type = type})
44800be871f5 User registration, etc (jabber:iq:register)
Waqas Hussain <waqas20@gmail.com>
parents: 30
diff changeset
258 :tag(condition, {xmlns = "urn:ietf:params:xml:ns:xmpp-stanzas"}):up();
44800be871f5 User registration, etc (jabber:iq:register)
Waqas Hussain <waqas20@gmail.com>
parents: 30
diff changeset
259 if (message) then t:tag("text"):text(message):up(); end
44800be871f5 User registration, etc (jabber:iq:register)
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parents: 30
diff changeset
260 return t; -- stanza ready for adding app-specific errors
44800be871f5 User registration, etc (jabber:iq:register)
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parents: 30
diff changeset
261 end
44800be871f5 User registration, etc (jabber:iq:register)
Waqas Hussain <waqas20@gmail.com>
parents: 30
diff changeset
262
0
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diff changeset
263 function presence(attr)
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264 return stanza("presence", attr);
3e3171b59028 First commit, where do you want to go tomorrow?
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265 end
3e3171b59028 First commit, where do you want to go tomorrow?
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266
262
8c73fb2ff4a2 A treat for Linux users ;)
Matthew Wild <mwild1@gmail.com>
parents: 251
diff changeset
267 if do_pretty_printing then
8c73fb2ff4a2 A treat for Linux users ;)
Matthew Wild <mwild1@gmail.com>
parents: 251
diff changeset
268 local style_attrk = getstyle("yellow");
8c73fb2ff4a2 A treat for Linux users ;)
Matthew Wild <mwild1@gmail.com>
parents: 251
diff changeset
269 local style_attrv = getstyle("red");
8c73fb2ff4a2 A treat for Linux users ;)
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parents: 251
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270 local style_tagname = getstyle("red");
8c73fb2ff4a2 A treat for Linux users ;)
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parents: 251
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271 local style_punc = getstyle("magenta");
8c73fb2ff4a2 A treat for Linux users ;)
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parents: 251
diff changeset
272
8c73fb2ff4a2 A treat for Linux users ;)
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parents: 251
diff changeset
273 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
274 local top_tag_format = getstring(style_punc, "<")..getstring(style_tagname, "%s").."%s"..getstring(style_punc, ">");
8c73fb2ff4a2 A treat for Linux users ;)
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parents: 251
diff changeset
275 --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 ;)
Matthew Wild <mwild1@gmail.com>
parents: 251
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276 local tag_format = top_tag_format.."%s"..getstring(style_punc, "</")..getstring(style_tagname, "%s")..getstring(style_punc, ">");
8c73fb2ff4a2 A treat for Linux users ;)
Matthew Wild <mwild1@gmail.com>
parents: 251
diff changeset
277 function stanza_mt.pretty_print(t)
8c73fb2ff4a2 A treat for Linux users ;)
Matthew Wild <mwild1@gmail.com>
parents: 251
diff changeset
278 local children_text = "";
8c73fb2ff4a2 A treat for Linux users ;)
Matthew Wild <mwild1@gmail.com>
parents: 251
diff changeset
279 for n, child in ipairs(t) do
8c73fb2ff4a2 A treat for Linux users ;)
Matthew Wild <mwild1@gmail.com>
parents: 251
diff changeset
280 if type(child) == "string" then
8c73fb2ff4a2 A treat for Linux users ;)
Matthew Wild <mwild1@gmail.com>
parents: 251
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281 children_text = children_text .. xml_escape(child);
8c73fb2ff4a2 A treat for Linux users ;)
Matthew Wild <mwild1@gmail.com>
parents: 251
diff changeset
282 else
8c73fb2ff4a2 A treat for Linux users ;)
Matthew Wild <mwild1@gmail.com>
parents: 251
diff changeset
283 children_text = children_text .. child:pretty_print();
8c73fb2ff4a2 A treat for Linux users ;)
Matthew Wild <mwild1@gmail.com>
parents: 251
diff changeset
284 end
8c73fb2ff4a2 A treat for Linux users ;)
Matthew Wild <mwild1@gmail.com>
parents: 251
diff changeset
285 end
8c73fb2ff4a2 A treat for Linux users ;)
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parents: 251
diff changeset
286
8c73fb2ff4a2 A treat for Linux users ;)
Matthew Wild <mwild1@gmail.com>
parents: 251
diff changeset
287 local attr_string = "";
8c73fb2ff4a2 A treat for Linux users ;)
Matthew Wild <mwild1@gmail.com>
parents: 251
diff changeset
288 if t.attr then
8c73fb2ff4a2 A treat for Linux users ;)
Matthew Wild <mwild1@gmail.com>
parents: 251
diff changeset
289 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
8c73fb2ff4a2 A treat for Linux users ;)
Matthew Wild <mwild1@gmail.com>
parents: 251
diff changeset
290 end
8c73fb2ff4a2 A treat for Linux users ;)
Matthew Wild <mwild1@gmail.com>
parents: 251
diff changeset
291 return s_format(tag_format, t.name, attr_string, children_text, t.name);
8c73fb2ff4a2 A treat for Linux users ;)
Matthew Wild <mwild1@gmail.com>
parents: 251
diff changeset
292 end
8c73fb2ff4a2 A treat for Linux users ;)
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parents: 251
diff changeset
293
8c73fb2ff4a2 A treat for Linux users ;)
Matthew Wild <mwild1@gmail.com>
parents: 251
diff changeset
294 function stanza_mt.pretty_top_tag(t)
8c73fb2ff4a2 A treat for Linux users ;)
Matthew Wild <mwild1@gmail.com>
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295 local attr_string = "";
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296 if t.attr then
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297 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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298 end
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299 return s_format(top_tag_format, t.name, attr_string);
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300 end
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301 else
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302 -- Sorry, fresh out of colours for you guys ;)
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303 stanza_mt.pretty_print = stanza_mt.__tostring;
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304 stanza_mt.pretty_top_tag = stanza_mt.top_tag;
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305 end
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306
90
da468ed49a7b Stanza preserialize/deserialize helpers, to strip and restore stanzas respectively. Fixed mod_vcard to use these.
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307 return _M;