prosody
d1243b321c45
util/stanza.lua

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util/stanza.lua @ 1666:d1243b321c45

net.httpserver: Allow overriding default request handler
author Matthew Wild <mwild1@gmail.com>
date Tue, 11 Aug 2009 20:49:19 +0100
parent 1523:841d61be198f
child 1874:262ea889016f
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1 -- Prosody IM
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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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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 s_find = string.find;
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28 local os = os;
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29
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30 local do_pretty_printing = not os.getenv("WINDIR");
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31 local getstyle, getstring = require "util.termcolours".getstyle, require "util.termcolours".getstring;
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32
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33 local log = require "util.logger".init("stanza");
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34
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35 module "stanza"
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36
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37 stanza_mt = {};
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38 stanza_mt.__index = stanza_mt;
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39
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40 function stanza(name, attr)
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41 local stanza = { name = name, attr = attr or {}, tags = {}, last_add = {}};
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42 return setmetatable(stanza, stanza_mt);
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43 end
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44
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45 function stanza_mt:query(xmlns)
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46 return self:tag("query", { xmlns = xmlns });
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47 end
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48
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49 function stanza_mt:body(text, attr)
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50 return self:tag("body", attr):text(text);
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51 end
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52
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53 function stanza_mt:tag(name, attrs)
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54 local s = stanza(name, attrs);
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55 (self.last_add[#self.last_add] or self):add_direct_child(s);
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56 t_insert(self.last_add, s);
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57 return self;
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58 end
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59
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60 function stanza_mt:text(text)
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61 (self.last_add[#self.last_add] or self):add_direct_child(text);
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62 return self;
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63 end
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64
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65 function stanza_mt:up()
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66 t_remove(self.last_add);
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67 return self;
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68 end
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69
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70 function stanza_mt:reset()
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71 local last_add = self.last_add;
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72 for i = 1,#last_add do
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73 last_add[i] = nil;
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74 end
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75 return self;
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76 end
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77
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78 function stanza_mt:add_direct_child(child)
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79 if type(child) == "table" then
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80 t_insert(self.tags, child);
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81 end
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82 t_insert(self, child);
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83 end
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84
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85 function stanza_mt:add_child(child)
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86 (self.last_add[#self.last_add] or self):add_direct_child(child);
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87 return self;
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88 end
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89
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90 function stanza_mt:child_with_name(name)
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91 for _, child in ipairs(self.tags) do
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92 if child.name == name then return child; end
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93 end
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94 end
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95
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96 function stanza_mt:child_with_ns(ns)
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97 for _, child in ipairs(self.tags) do
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98 if child.attr.xmlns == ns then return child; end
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99 end
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100 end
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101
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102 function stanza_mt:children()
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103 local i = 0;
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104 return function (a)
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105 i = i + 1
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106 local v = a[i]
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107 if v then return v; end
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108 end, self, i;
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109
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110 end
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111 function stanza_mt:childtags()
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112 local i = 0;
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113 return function (a)
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114 i = i + 1
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115 local v = self.tags[i]
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116 if v then return v; end
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117 end, self.tags[1], i;
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118
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119 end
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120
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121 local xml_escape = (function()
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122 local escape_table = { ["'"] = "&apos;", ["\""] = "&quot;", ["<"] = "&lt;", [">"] = "&gt;", ["&"] = "&amp;" };
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123 return function(str) return (s_gsub(str, "['&<>\"]", escape_table)); end
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124 end)();
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125 local function _dostring(t, buf, self, xml_escape)
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126 local nsid = 0;
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127 local name = t.name
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128 t_insert(buf, "<"..name);
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129 for k, v in pairs(t.attr) do
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130 if s_find(k, "|", 1, true) then
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131 local ns, attrk = s_match(k, "^([^|]+)|(.+)$");
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132 nsid = nsid + 1;
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133 t_insert(buf, " xmlns:ns"..nsid.."='"..xml_escape(ns).."' ".."ns"..nsid..":"..attrk.."='"..xml_escape(v).."'");
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134 else
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135 t_insert(buf, " "..k.."='"..xml_escape(v).."'");
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136 end
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137 end
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138 local len = #t;
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139 if len == 0 then
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140 t_insert(buf, "/>");
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141 else
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142 t_insert(buf, ">");
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143 for n=1,len do
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144 local child = t[n];
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diff changeset
145 if child.name then
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146 self(child, buf, self, xml_escape);
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147 else
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148 t_insert(buf, xml_escape(child));
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149 end
4
09c3845ed442 Presence unavailable on disconnect
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parents: 2
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150 end
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151 t_insert(buf, "</"..name..">");
0
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152 end
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153 end
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parents: 519
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154 function stanza_mt.__tostring(t)
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parents: 519
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155 local buf = {};
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156 _dostring(t, buf, _dostring, xml_escape);
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157 return t_concat(buf);
0
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158 end
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159
242
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parents: 209
diff changeset
160 function stanza_mt.top_tag(t)
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parents: 209
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161 local attr_string = "";
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parents: 209
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162 if t.attr then
338
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parents: 262
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163 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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164 end
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parents: 209
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165 return s_format("<%s%s>", t.name, attr_string);
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166 end
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parents: 209
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167
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parents: 1416
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168 function stanza_mt.get_text(t)
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169 if #t.tags == 0 then
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parents: 1416
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170 return t_concat(t);
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parents: 1416
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171 end
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parents: 1416
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172 end
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173
0
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174 function stanza_mt.__add(s1, s2)
180
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parents: 145
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175 return s1:add_direct_child(s2);
0
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176 end
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177
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178
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179 do
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180 local id = 0;
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181 function new_id()
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182 id = id + 1;
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183 return "lx"..id;
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184 end
0
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185 end
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186
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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187 function preserialize(stanza)
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parents: 70
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188 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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189 for _, child in ipairs(stanza) do
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parents: 70
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190 if type(child) == "table" then
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parents: 70
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191 t_insert(s, preserialize(child));
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parents: 70
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192 else
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parents: 70
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193 t_insert(s, child);
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parents: 70
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194 end
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parents: 70
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195 end
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parents: 70
diff changeset
196 return s;
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parents: 70
diff changeset
197 end
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parents: 70
diff changeset
198
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 function deserialize(stanza)
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parents: 70
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200 -- Set metatable
91
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parents: 90
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201 if stanza then
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202 local attr = stanza.attr;
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parents: 1151
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203 for i=1,#attr do attr[i] = nil; end
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parents: 90
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204 setmetatable(stanza, stanza_mt);
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parents: 70
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205 for _, child in ipairs(stanza) do
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parents: 70
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206 if type(child) == "table" then
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207 deserialize(child);
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parents: 70
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208 end
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parents: 70
diff changeset
209 end
91
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210 if not stanza.tags then
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211 -- Rebuild tags
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212 local tags = {};
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213 for _, child in ipairs(stanza) do
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214 if type(child) == "table" then
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215 t_insert(tags, child);
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216 end
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parents: 90
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217 end
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218 stanza.tags = tags;
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parents: 627
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219 if not stanza.last_add then
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220 stanza.last_add = {};
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parents: 627
diff changeset
221 end
91
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222 end
90
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parents: 70
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223 end
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parents: 70
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224
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225 return stanza;
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parents: 70
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226 end
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227
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228 function clone(stanza)
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229 local lookup_table = {};
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230 local function _copy(object)
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231 if type(object) ~= "table" then
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232 return object;
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233 elseif lookup_table[object] then
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234 return lookup_table[object];
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235 end
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236 local new_table = {};
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237 lookup_table[object] = new_table;
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238 for index, value in pairs(object) do
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239 new_table[_copy(index)] = _copy(value);
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diff changeset
240 end
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241 return setmetatable(new_table, getmetatable(object));
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diff changeset
242 end
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parents: 1431
diff changeset
243
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244 return _copy(stanza)
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245 end
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246
0
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diff changeset
247 function message(attr, body)
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248 if not body then
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249 return stanza("message", attr);
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250 else
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251 return stanza("message", attr):tag("body"):text(body);
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252 end
3e3171b59028 First commit, where do you want to go tomorrow?
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253 end
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254 function iq(attr)
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255 if attr and not attr.id then attr.id = new_id(); end
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256 return stanza("iq", attr or { id = new_id() });
3e3171b59028 First commit, where do you want to go tomorrow?
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257 end
3e3171b59028 First commit, where do you want to go tomorrow?
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258
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259 function reply(orig)
209
e9de0803676d Part one of internal component support
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260 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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261 end
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262
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parents: 964
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263 function error_reply(orig, type, condition, message)
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parents: 62
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264 local t = reply(orig);
60
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parents: 30
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265 t.attr.type = "error";
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parents: 30
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266 t:tag("error", {type = type})
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parents: 30
diff changeset
267 :tag(condition, {xmlns = "urn:ietf:params:xml:ns:xmpp-stanzas"}):up();
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parents: 30
diff changeset
268 if (message) then t:tag("text"):text(message):up(); end
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parents: 30
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269 return t; -- stanza ready for adding app-specific errors
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270 end
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parents: 30
diff changeset
271
0
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272 function presence(attr)
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273 return stanza("presence", attr);
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274 end
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275
262
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parents: 251
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276 if do_pretty_printing then
8c73fb2ff4a2 A treat for Linux users ;)
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parents: 251
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277 local style_attrk = getstyle("yellow");
8c73fb2ff4a2 A treat for Linux users ;)
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parents: 251
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278 local style_attrv = getstyle("red");
8c73fb2ff4a2 A treat for Linux users ;)
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parents: 251
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279 local style_tagname = getstyle("red");
8c73fb2ff4a2 A treat for Linux users ;)
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parents: 251
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280 local style_punc = getstyle("magenta");
8c73fb2ff4a2 A treat for Linux users ;)
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parents: 251
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281
8c73fb2ff4a2 A treat for Linux users ;)
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parents: 251
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282 local attr_format = " "..getstring(style_attrk, "%s")..getstring(style_punc, "=")..getstring(style_attrv, "'%s'");
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283 local top_tag_format = getstring(style_punc, "<")..getstring(style_tagname, "%s").."%s"..getstring(style_punc, ">");
8c73fb2ff4a2 A treat for Linux users ;)
Matthew Wild <mwild1@gmail.com>
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284 --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, ">");
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285 local tag_format = top_tag_format.."%s"..getstring(style_punc, "</")..getstring(style_tagname, "%s")..getstring(style_punc, ">");
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286 function stanza_mt.pretty_print(t)
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287 local children_text = "";
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288 for n, child in ipairs(t) do
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289 if type(child) == "string" then
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290 children_text = children_text .. xml_escape(child);
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291 else
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292 children_text = children_text .. child:pretty_print();
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293 end
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294 end
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295
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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(tag_format, t.name, attr_string, children_text, t.name);
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301 end
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302
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303 function stanza_mt.pretty_top_tag(t)
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304 local attr_string = "";
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305 if t.attr then
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306 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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307 end
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308 return s_format(top_tag_format, t.name, attr_string);
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309 end
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310 else
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311 -- Sorry, fresh out of colours for you guys ;)
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312 stanza_mt.pretty_print = stanza_mt.__tostring;
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313 stanza_mt.pretty_top_tag = stanza_mt.top_tag;
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314 end
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315
90
da468ed49a7b Stanza preserialize/deserialize helpers, to strip and restore stanzas respectively. Fixed mod_vcard to use these.
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316 return _M;