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util/stanza.lua @ 2501:f521e89539da
Merge with trunk.
author | Waqas Hussain <waqas20@gmail.com> |
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date | Tue, 26 Jan 2010 02:10:25 +0500 |
parent | 2482:a1570e371258 |
child | 2526:401ff68413a1 |
rev | line source |
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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 -- |
758 | 5 -- This project is MIT/X11 licensed. Please see the |
6 -- COPYING file in the source package for more information. | |
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7 -- |
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8 |
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9 |
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10 local t_insert = table.insert; |
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11 local t_concat = table.concat; |
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12 local t_remove = table.remove; |
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13 local t_concat = table.concat; |
23 | 14 local s_format = string.format; |
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15 local s_match = string.match; |
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16 local tostring = tostring; |
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17 local setmetatable = setmetatable; |
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18 local getmetatable = getmetatable; |
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19 local pairs = pairs; |
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20 local ipairs = ipairs; |
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21 local type = type; |
145 | 22 local next = next; |
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23 local print = print; |
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24 local unpack = unpack; |
4 | 25 local s_gsub = string.gsub; |
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26 local s_char = string.char; |
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27 local s_find = string.find; |
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28 local os = os; |
145 | 29 |
262 | 30 local do_pretty_printing = not os.getenv("WINDIR"); |
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31 local getstyle, getstring; |
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32 if do_pretty_printing then |
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33 local ok, termcolours = pcall(require, "util.termcolours"); |
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34 if ok then |
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35 getstyle, getstring = termcolours.getstyle, termcolours.getstring; |
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36 else |
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37 do_pretty_printing = nil; |
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38 end |
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39 end |
262 | 40 |
0 | 41 module "stanza" |
42 | |
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43 stanza_mt = { __type = "stanza" }; |
0 | 44 stanza_mt.__index = stanza_mt; |
45 | |
46 function stanza(name, attr) | |
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47 local stanza = { name = name, attr = attr or {}, tags = {}, last_add = {}}; |
0 | 48 return setmetatable(stanza, stanza_mt); |
49 end | |
50 | |
51 function stanza_mt:query(xmlns) | |
52 return self:tag("query", { xmlns = xmlns }); | |
53 end | |
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54 |
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55 function stanza_mt:body(text, attr) |
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56 return self:tag("body", attr):text(text); |
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57 end |
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58 |
0 | 59 function stanza_mt:tag(name, attrs) |
60 local s = stanza(name, attrs); | |
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61 (self.last_add[#self.last_add] or self):add_direct_child(s); |
0 | 62 t_insert(self.last_add, s); |
63 return self; | |
64 end | |
65 | |
66 function stanza_mt:text(text) | |
180
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67 (self.last_add[#self.last_add] or self):add_direct_child(text); |
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68 return self; |
0 | 69 end |
70 | |
71 function stanza_mt:up() | |
72 t_remove(self.last_add); | |
73 return self; | |
74 end | |
75 | |
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76 function stanza_mt:reset() |
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77 local last_add = self.last_add; |
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78 for i = 1,#last_add do |
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79 last_add[i] = nil; |
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80 end |
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81 return self; |
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82 end |
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83 |
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84 function stanza_mt:add_direct_child(child) |
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85 if type(child) == "table" then |
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86 t_insert(self.tags, child); |
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87 end |
0 | 88 t_insert(self, child); |
89 end | |
90 | |
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91 function stanza_mt:add_child(child) |
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92 (self.last_add[#self.last_add] or self):add_direct_child(child); |
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93 return self; |
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94 end |
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95 |
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96 function stanza_mt:get_child(name, xmlns) |
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97 for _, child in ipairs(self.tags) do |
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98 if (not name or child.name == name) |
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99 and ((not xmlns and self.attr.xmlns == child.attr.xmlns) |
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100 or child.attr.xmlns == xmlns) then |
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101 |
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102 return child; |
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103 end |
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104 end |
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105 end |
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106 |
0 | 107 function stanza_mt:child_with_name(name) |
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108 for _, child in ipairs(self.tags) do |
0 | 109 if child.name == name then return child; end |
110 end | |
111 end | |
112 | |
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113 function stanza_mt:child_with_ns(ns) |
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114 for _, child in ipairs(self.tags) do |
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115 if child.attr.xmlns == ns then return child; end |
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116 end |
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117 end |
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118 |
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119 function stanza_mt:children() |
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120 local i = 0; |
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121 return function (a) |
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122 i = i + 1 |
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123 local v = a[i] |
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124 if v then return v; end |
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125 end, self, i; |
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126 end |
2 | 127 function stanza_mt:childtags() |
128 local i = 0; | |
129 return function (a) | |
130 i = i + 1 | |
131 local v = self.tags[i] | |
132 if v then return v; end | |
133 end, self.tags[1], i; | |
134 end | |
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135 |
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136 local xml_escape |
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137 do |
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138 local escape_table = { ["'"] = "'", ["\""] = """, ["<"] = "<", [">"] = ">", ["&"] = "&" }; |
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139 function xml_escape(str) return (s_gsub(str, "['&<>\"]", escape_table)); end |
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140 _M.xml_escape = xml_escape; |
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141 end |
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142 |
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143 local function _dostring(t, buf, self, xml_escape, parentns) |
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144 local nsid = 0; |
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145 local name = t.name |
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146 t_insert(buf, "<"..name); |
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147 for k, v in pairs(t.attr) do |
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148 if s_find(k, "\1", 1, true) then |
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149 local ns, attrk = s_match(k, "^([^\1]*)\1?(.*)$"); |
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150 nsid = nsid + 1; |
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151 t_insert(buf, " xmlns:ns"..nsid.."='"..xml_escape(ns).."' ".."ns"..nsid..":"..attrk.."='"..xml_escape(v).."'"); |
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152 elseif not(k == "xmlns" and v == parentns) then |
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153 t_insert(buf, " "..k.."='"..xml_escape(v).."'"); |
776
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util.stanza: Temporary fix for serializing attributes with namespaces
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parents:
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diff
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|
154 end |
1416
f916f0ff90e5
util.stanza: Rewrote stanza_mt.__tostring. 20-30% faster stanza serialization. - #optimization
Waqas Hussain <waqas20@gmail.com>
parents:
1415
diff
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|
155 end |
1431
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|
156 local len = #t; |
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|
157 if len == 0 then |
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|
158 t_insert(buf, "/>"); |
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|
159 else |
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diff
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|
160 t_insert(buf, ">"); |
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diff
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|
161 for n=1,len do |
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|
162 local child = t[n]; |
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|
163 if child.name then |
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diff
changeset
|
164 self(child, buf, self, xml_escape, t.attr.xmlns); |
1431
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|
165 else |
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|
166 t_insert(buf, xml_escape(child)); |
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parents:
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diff
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|
167 end |
4 | 168 end |
1431
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|
169 t_insert(buf, "</"..name..">"); |
0 | 170 end |
626
cf1d26fd4d6f
Optimized stanza_mt.__tostring (called when doing tostring(stanza))
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parents:
519
diff
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|
171 end |
cf1d26fd4d6f
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parents:
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|
172 function stanza_mt.__tostring(t) |
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parents:
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|
173 local buf = {}; |
2077
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diff
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|
174 _dostring(t, buf, _dostring, xml_escape, nil); |
626
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|
175 return t_concat(buf); |
0 | 176 end |
177 | |
242
f15afbcbc55c
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parents:
209
diff
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178 function stanza_mt.top_tag(t) |
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diff
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|
179 local attr_string = ""; |
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parents:
209
diff
changeset
|
180 if t.attr then |
338
804f5e62a41f
Don't forget to escape XML in attributes. Thanks to the Postgres Q&A room on conference.jabber.org :)
Matthew Wild <mwild1@gmail.com>
parents:
262
diff
changeset
|
181 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
f15afbcbc55c
Add new top_tag() method to stanzas
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parents:
209
diff
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|
182 end |
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diff
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|
183 return s_format("<%s%s>", t.name, attr_string); |
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209
diff
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|
184 end |
f15afbcbc55c
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parents:
209
diff
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|
185 |
1420
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util.stanza: Add stanza:get_text() to retrieve all child text nodes #api
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diff
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|
186 function stanza_mt.get_text(t) |
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parents:
1416
diff
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|
187 if #t.tags == 0 then |
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util.stanza: Add stanza:get_text() to retrieve all child text nodes #api
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parents:
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diff
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|
188 return t_concat(t); |
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parents:
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diff
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|
189 end |
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util.stanza: Add stanza:get_text() to retrieve all child text nodes #api
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parents:
1416
diff
changeset
|
190 end |
1576a5aa52f8
util.stanza: Add stanza:get_text() to retrieve all child text nodes #api
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parents:
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diff
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|
191 |
0 | 192 function stanza_mt.__add(s1, s2) |
180
d8b9a19d70eb
Make add_child() behave as expected. Old add_child() is now add_direct_child()
Matthew Wild <mwild1@gmail.com>
parents:
145
diff
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|
193 return s1:add_direct_child(s2); |
0 | 194 end |
195 | |
196 | |
197 do | |
1517
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|
198 local id = 0; |
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|
199 function new_id() |
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diff
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|
200 id = id + 1; |
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changeset
|
201 return "lx"..id; |
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parents:
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diff
changeset
|
202 end |
0 | 203 end |
204 | |
90
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
|
205 function preserialize(stanza) |
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parents:
70
diff
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|
206 local s = { name = stanza.name, attr = stanza.attr }; |
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parents:
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diff
changeset
|
207 for _, child in ipairs(stanza) do |
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parents:
70
diff
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|
208 if type(child) == "table" then |
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parents:
70
diff
changeset
|
209 t_insert(s, preserialize(child)); |
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parents:
70
diff
changeset
|
210 else |
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parents:
70
diff
changeset
|
211 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
diff
changeset
|
212 end |
da468ed49a7b
Stanza preserialize/deserialize helpers, to strip and restore stanzas respectively. Fixed mod_vcard to use these.
Matthew Wild <mwild1@gmail.com>
parents:
70
diff
changeset
|
213 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
|
214 return s; |
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parents:
70
diff
changeset
|
215 end |
da468ed49a7b
Stanza preserialize/deserialize helpers, to strip and restore stanzas respectively. Fixed mod_vcard to use these.
Matthew Wild <mwild1@gmail.com>
parents:
70
diff
changeset
|
216 |
da468ed49a7b
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parents:
70
diff
changeset
|
217 function deserialize(stanza) |
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parents:
70
diff
changeset
|
218 -- Set metatable |
91
6d66eb6b24cb
Fixed: util.stanza.deserialize now handles nil stanzas
Waqas Hussain <waqas20@gmail.com>
parents:
90
diff
changeset
|
219 if stanza then |
1415
957a81b72cb2
util.stanza: Remove numeric attributes while deserializing
Waqas Hussain <waqas20@gmail.com>
parents:
1151
diff
changeset
|
220 local attr = stanza.attr; |
957a81b72cb2
util.stanza: Remove numeric attributes while deserializing
Waqas Hussain <waqas20@gmail.com>
parents:
1151
diff
changeset
|
221 for i=1,#attr do attr[i] = nil; end |
2077
e33658f6052c
Changed separator between attribute names and prefixes from '|' to '\1' (optimization and cleanup).
Waqas Hussain <waqas20@gmail.com>
parents:
1984
diff
changeset
|
222 local attrx = {}; |
e33658f6052c
Changed separator between attribute names and prefixes from '|' to '\1' (optimization and cleanup).
Waqas Hussain <waqas20@gmail.com>
parents:
1984
diff
changeset
|
223 for att in pairs(attr) do |
e33658f6052c
Changed separator between attribute names and prefixes from '|' to '\1' (optimization and cleanup).
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parents:
1984
diff
changeset
|
224 if s_find(att, "|", 1, true) and not s_find(k, "\1", 1, true) then |
e33658f6052c
Changed separator between attribute names and prefixes from '|' to '\1' (optimization and cleanup).
Waqas Hussain <waqas20@gmail.com>
parents:
1984
diff
changeset
|
225 local ns,na = s_match(k, "^([^|]+)|(.+)$"); |
e33658f6052c
Changed separator between attribute names and prefixes from '|' to '\1' (optimization and cleanup).
Waqas Hussain <waqas20@gmail.com>
parents:
1984
diff
changeset
|
226 attrx[ns.."\1"..na] = attr[att]; |
e33658f6052c
Changed separator between attribute names and prefixes from '|' to '\1' (optimization and cleanup).
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parents:
1984
diff
changeset
|
227 attr[att] = nil; |
e33658f6052c
Changed separator between attribute names and prefixes from '|' to '\1' (optimization and cleanup).
Waqas Hussain <waqas20@gmail.com>
parents:
1984
diff
changeset
|
228 end |
e33658f6052c
Changed separator between attribute names and prefixes from '|' to '\1' (optimization and cleanup).
Waqas Hussain <waqas20@gmail.com>
parents:
1984
diff
changeset
|
229 end |
e33658f6052c
Changed separator between attribute names and prefixes from '|' to '\1' (optimization and cleanup).
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parents:
1984
diff
changeset
|
230 for a,v in pairs(attrx) do |
e33658f6052c
Changed separator between attribute names and prefixes from '|' to '\1' (optimization and cleanup).
Waqas Hussain <waqas20@gmail.com>
parents:
1984
diff
changeset
|
231 attr[x] = v; |
e33658f6052c
Changed separator between attribute names and prefixes from '|' to '\1' (optimization and cleanup).
Waqas Hussain <waqas20@gmail.com>
parents:
1984
diff
changeset
|
232 end |
91
6d66eb6b24cb
Fixed: util.stanza.deserialize now handles nil stanzas
Waqas Hussain <waqas20@gmail.com>
parents:
90
diff
changeset
|
233 setmetatable(stanza, stanza_mt); |
90
da468ed49a7b
Stanza preserialize/deserialize helpers, to strip and restore stanzas respectively. Fixed mod_vcard to use these.
Matthew Wild <mwild1@gmail.com>
parents:
70
diff
changeset
|
234 for _, child in ipairs(stanza) do |
da468ed49a7b
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parents:
70
diff
changeset
|
235 if type(child) == "table" then |
91
6d66eb6b24cb
Fixed: util.stanza.deserialize now handles nil stanzas
Waqas Hussain <waqas20@gmail.com>
parents:
90
diff
changeset
|
236 deserialize(child); |
90
da468ed49a7b
Stanza preserialize/deserialize helpers, to strip and restore stanzas respectively. Fixed mod_vcard to use these.
Matthew Wild <mwild1@gmail.com>
parents:
70
diff
changeset
|
237 end |
da468ed49a7b
Stanza preserialize/deserialize helpers, to strip and restore stanzas respectively. Fixed mod_vcard to use these.
Matthew Wild <mwild1@gmail.com>
parents:
70
diff
changeset
|
238 end |
91
6d66eb6b24cb
Fixed: util.stanza.deserialize now handles nil stanzas
Waqas Hussain <waqas20@gmail.com>
parents:
90
diff
changeset
|
239 if not stanza.tags then |
6d66eb6b24cb
Fixed: util.stanza.deserialize now handles nil stanzas
Waqas Hussain <waqas20@gmail.com>
parents:
90
diff
changeset
|
240 -- Rebuild tags |
6d66eb6b24cb
Fixed: util.stanza.deserialize now handles nil stanzas
Waqas Hussain <waqas20@gmail.com>
parents:
90
diff
changeset
|
241 local tags = {}; |
6d66eb6b24cb
Fixed: util.stanza.deserialize now handles nil stanzas
Waqas Hussain <waqas20@gmail.com>
parents:
90
diff
changeset
|
242 for _, child in ipairs(stanza) do |
6d66eb6b24cb
Fixed: util.stanza.deserialize now handles nil stanzas
Waqas Hussain <waqas20@gmail.com>
parents:
90
diff
changeset
|
243 if type(child) == "table" then |
6d66eb6b24cb
Fixed: util.stanza.deserialize now handles nil stanzas
Waqas Hussain <waqas20@gmail.com>
parents:
90
diff
changeset
|
244 t_insert(tags, child); |
6d66eb6b24cb
Fixed: util.stanza.deserialize now handles nil stanzas
Waqas Hussain <waqas20@gmail.com>
parents:
90
diff
changeset
|
245 end |
6d66eb6b24cb
Fixed: util.stanza.deserialize now handles nil stanzas
Waqas Hussain <waqas20@gmail.com>
parents:
90
diff
changeset
|
246 end |
6d66eb6b24cb
Fixed: util.stanza.deserialize now handles nil stanzas
Waqas Hussain <waqas20@gmail.com>
parents:
90
diff
changeset
|
247 stanza.tags = tags; |
680
734994b61907
Restore fix for missing last_add on deserialized stanzas. Thanks to tsing for discovering.
Matthew Wild <mwild1@gmail.com>
parents:
627
diff
changeset
|
248 if not stanza.last_add then |
734994b61907
Restore fix for missing last_add on deserialized stanzas. Thanks to tsing for discovering.
Matthew Wild <mwild1@gmail.com>
parents:
627
diff
changeset
|
249 stanza.last_add = {}; |
734994b61907
Restore fix for missing last_add on deserialized stanzas. Thanks to tsing for discovering.
Matthew Wild <mwild1@gmail.com>
parents:
627
diff
changeset
|
250 end |
91
6d66eb6b24cb
Fixed: util.stanza.deserialize now handles nil stanzas
Waqas Hussain <waqas20@gmail.com>
parents:
90
diff
changeset
|
251 end |
90
da468ed49a7b
Stanza preserialize/deserialize helpers, to strip and restore stanzas respectively. Fixed mod_vcard to use these.
Matthew Wild <mwild1@gmail.com>
parents:
70
diff
changeset
|
252 end |
da468ed49a7b
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parents:
70
diff
changeset
|
253 |
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
|
254 return stanza; |
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
|
255 end |
da468ed49a7b
Stanza preserialize/deserialize helpers, to strip and restore stanzas respectively. Fixed mod_vcard to use these.
Matthew Wild <mwild1@gmail.com>
parents:
70
diff
changeset
|
256 |
829
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Waqas Hussain <waqas20@gmail.com>
parents:
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diff
changeset
|
257 function clone(stanza) |
1517
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diff
changeset
|
258 local lookup_table = {}; |
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diff
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|
259 local function _copy(object) |
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diff
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|
260 if type(object) ~= "table" then |
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diff
changeset
|
261 return object; |
22be7637a64d
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parents:
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diff
changeset
|
262 elseif lookup_table[object] then |
22be7637a64d
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parents:
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diff
changeset
|
263 return lookup_table[object]; |
22be7637a64d
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parents:
1431
diff
changeset
|
264 end |
22be7637a64d
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parents:
1431
diff
changeset
|
265 local new_table = {}; |
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diff
changeset
|
266 lookup_table[object] = new_table; |
22be7637a64d
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1431
diff
changeset
|
267 for index, value in pairs(object) do |
22be7637a64d
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diff
changeset
|
268 new_table[_copy(index)] = _copy(value); |
22be7637a64d
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1431
diff
changeset
|
269 end |
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1431
diff
changeset
|
270 return setmetatable(new_table, getmetatable(object)); |
22be7637a64d
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1431
diff
changeset
|
271 end |
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diff
changeset
|
272 |
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diff
changeset
|
273 return _copy(stanza) |
829
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util/stanza: Added clone function
Waqas Hussain <waqas20@gmail.com>
parents:
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274 end |
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275 |
0 | 276 function message(attr, body) |
277 if not body then | |
278 return stanza("message", attr); | |
279 else | |
280 return stanza("message", attr):tag("body"):text(body); | |
281 end | |
282 end | |
283 function iq(attr) | |
284 if attr and not attr.id then attr.id = new_id(); end | |
285 return stanza("iq", attr or { id = new_id() }); | |
286 end | |
287 | |
288 function reply(orig) | |
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289 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 | 290 end |
291 | |
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292 function error_reply(orig, type, condition, message) |
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293 local t = reply(orig); |
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294 t.attr.type = "error"; |
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295 t:tag("error", {type = type}) |
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296 :tag(condition, {xmlns = "urn:ietf:params:xml:ns:xmpp-stanzas"}):up(); |
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297 if (message) then t:tag("text"):text(message):up(); end |
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298 return t; -- stanza ready for adding app-specific errors |
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299 end |
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300 |
0 | 301 function presence(attr) |
302 return stanza("presence", attr); | |
303 end | |
304 | |
262 | 305 if do_pretty_printing then |
306 local style_attrk = getstyle("yellow"); | |
307 local style_attrv = getstyle("red"); | |
308 local style_tagname = getstyle("red"); | |
309 local style_punc = getstyle("magenta"); | |
310 | |
311 local attr_format = " "..getstring(style_attrk, "%s")..getstring(style_punc, "=")..getstring(style_attrv, "'%s'"); | |
312 local top_tag_format = getstring(style_punc, "<")..getstring(style_tagname, "%s").."%s"..getstring(style_punc, ">"); | |
313 --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, ">"); | |
314 local tag_format = top_tag_format.."%s"..getstring(style_punc, "</")..getstring(style_tagname, "%s")..getstring(style_punc, ">"); | |
315 function stanza_mt.pretty_print(t) | |
316 local children_text = ""; | |
317 for n, child in ipairs(t) do | |
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318 if type(child) == "string" then |
262 | 319 children_text = children_text .. xml_escape(child); |
320 else | |
321 children_text = children_text .. child:pretty_print(); | |
322 end | |
323 end | |
324 | |
325 local attr_string = ""; | |
326 if t.attr then | |
327 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 | |
328 end | |
329 return s_format(tag_format, t.name, attr_string, children_text, t.name); | |
330 end | |
331 | |
332 function stanza_mt.pretty_top_tag(t) | |
333 local attr_string = ""; | |
334 if t.attr then | |
335 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 | |
336 end | |
337 return s_format(top_tag_format, t.name, attr_string); | |
338 end | |
339 else | |
340 -- Sorry, fresh out of colours for you guys ;) | |
341 stanza_mt.pretty_print = stanza_mt.__tostring; | |
342 stanza_mt.pretty_top_tag = stanza_mt.top_tag; | |
343 end | |
344 | |
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345 return _M; |