Wed, 26 Nov 2008 23:12:05 +0000
Fix to make a global configmanager instance
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1 | local t_insert = table.insert; |
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2 | local t_remove = table.remove; |
23 | 3 | local s_format = string.format; |
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4 | local tostring = tostring; |
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5 | local setmetatable = setmetatable; |
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6 | local pairs = pairs; |
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7 | local ipairs = ipairs; |
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8 | local type = type; |
145 | 9 | local next = next; |
10 | local print = print; | |
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Stanza preserialize/deserialize helpers, to strip and restore stanzas respectively. Fixed mod_vcard to use these.
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11 | local unpack = unpack; |
4 | 12 | local s_gsub = string.gsub; |
262 | 13 | local os = os; |
145 | 14 | |
262 | 15 | local do_pretty_printing = not os.getenv("WINDIR"); |
16 | local getstyle, getstring = require "util.termcolours".getstyle, require "util.termcolours".getstring; | |
17 | ||
145 | 18 | local log = require "util.logger".init("stanza"); |
19 | ||
0 | 20 | module "stanza" |
21 | ||
22 | stanza_mt = {}; | |
23 | stanza_mt.__index = stanza_mt; | |
24 | ||
25 | function stanza(name, attr) | |
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26 | local stanza = { name = name, attr = attr or {}, tags = {}, last_add = {}}; |
0 | 27 | return setmetatable(stanza, stanza_mt); |
28 | end | |
29 | ||
30 | function stanza_mt:query(xmlns) | |
31 | return self:tag("query", { xmlns = xmlns }); | |
32 | end | |
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33 | |
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34 | function stanza_mt:body(text, attr) |
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35 | return self:tag("body", attr):text(text); |
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36 | end |
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37 | |
0 | 38 | function stanza_mt:tag(name, attrs) |
39 | local s = stanza(name, attrs); | |
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40 | (self.last_add[#self.last_add] or self):add_direct_child(s); |
0 | 41 | t_insert(self.last_add, s); |
42 | return self; | |
43 | end | |
44 | ||
45 | function stanza_mt:text(text) | |
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46 | (self.last_add[#self.last_add] or self):add_direct_child(text); |
0 | 47 | return self; |
48 | end | |
49 | ||
50 | function stanza_mt:up() | |
51 | t_remove(self.last_add); | |
52 | return self; | |
53 | end | |
54 | ||
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55 | function stanza_mt:add_direct_child(child) |
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56 | if type(child) == "table" then |
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57 | t_insert(self.tags, child); |
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58 | end |
0 | 59 | t_insert(self, child); |
60 | end | |
61 | ||
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62 | function stanza_mt:add_child(child) |
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63 | (self.last_add[#self.last_add] or self):add_direct_child(child); |
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64 | return self; |
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65 | end |
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66 | |
0 | 67 | function stanza_mt:child_with_name(name) |
68 | for _, child in ipairs(self) do | |
69 | if child.name == name then return child; end | |
70 | end | |
71 | end | |
72 | ||
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73 | function stanza_mt:children() |
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74 | local i = 0; |
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75 | return function (a) |
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76 | i = i + 1 |
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77 | local v = a[i] |
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78 | if v then return v; end |
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79 | end, self, i; |
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80 | |
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81 | end |
2 | 82 | function stanza_mt:childtags() |
83 | local i = 0; | |
84 | return function (a) | |
85 | i = i + 1 | |
86 | local v = self.tags[i] | |
87 | if v then return v; end | |
88 | end, self.tags[1], i; | |
89 | ||
90 | end | |
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91 | |
4 | 92 | do |
93 | local xml_entities = { ["'"] = "'", ["\""] = """, ["<"] = "<", [">"] = ">", ["&"] = "&" }; | |
94 | function xml_escape(s) return s_gsub(s, "['&<>\"]", xml_entities); end | |
95 | end | |
96 | ||
97 | local xml_escape = xml_escape; | |
98 | ||
0 | 99 | function stanza_mt.__tostring(t) |
100 | local children_text = ""; | |
101 | for n, child in ipairs(t) do | |
4 | 102 | if type(child) == "string" then |
103 | children_text = children_text .. xml_escape(child); | |
104 | else | |
105 | children_text = children_text .. tostring(child); | |
106 | end | |
0 | 107 | end |
108 | ||
109 | local attr_string = ""; | |
110 | if t.attr then | |
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111 | 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 |
0 | 112 | end |
23 | 113 | return s_format("<%s%s>%s</%s>", t.name, attr_string, children_text, t.name); |
0 | 114 | end |
115 | ||
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116 | function stanza_mt.top_tag(t) |
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117 | local attr_string = ""; |
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118 | if t.attr then |
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119 | 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 |
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120 | end |
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121 | return s_format("<%s%s>", t.name, attr_string); |
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122 | end |
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123 | |
0 | 124 | function stanza_mt.__add(s1, s2) |
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125 | return s1:add_direct_child(s2); |
0 | 126 | end |
127 | ||
128 | ||
129 | do | |
130 | local id = 0; | |
131 | function new_id() | |
132 | id = id + 1; | |
133 | return "lx"..id; | |
134 | end | |
135 | end | |
136 | ||
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137 | function preserialize(stanza) |
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138 | local s = { name = stanza.name, attr = stanza.attr }; |
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139 | for _, child in ipairs(stanza) do |
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140 | if type(child) == "table" then |
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141 | t_insert(s, preserialize(child)); |
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142 | else |
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143 | t_insert(s, child); |
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144 | end |
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145 | end |
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146 | return s; |
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147 | end |
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148 | |
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149 | function deserialize(stanza) |
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150 | -- Set metatable |
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151 | if stanza then |
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152 | setmetatable(stanza, stanza_mt); |
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153 | for _, child in ipairs(stanza) do |
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154 | if type(child) == "table" then |
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155 | deserialize(child); |
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156 | end |
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157 | end |
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158 | if not stanza.tags then |
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159 | -- Rebuild tags |
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160 | local tags = {}; |
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161 | for _, child in ipairs(stanza) do |
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162 | if type(child) == "table" then |
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163 | t_insert(tags, child); |
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164 | end |
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165 | end |
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166 | stanza.tags = tags; |
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167 | end |
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168 | end |
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169 | |
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170 | return stanza; |
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171 | end |
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172 | |
0 | 173 | function message(attr, body) |
174 | if not body then | |
175 | return stanza("message", attr); | |
176 | else | |
177 | return stanza("message", attr):tag("body"):text(body); | |
178 | end | |
179 | end | |
180 | function iq(attr) | |
181 | if attr and not attr.id then attr.id = new_id(); end | |
182 | return stanza("iq", attr or { id = new_id() }); | |
183 | end | |
184 | ||
185 | function reply(orig) | |
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186 | 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 | 187 | end |
188 | ||
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189 | function error_reply(orig, type, condition, message, clone) |
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190 | local t = reply(orig); |
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191 | t.attr.type = "error"; |
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192 | -- TODO use clone |
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193 | t:tag("error", {type = type}) |
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194 | :tag(condition, {xmlns = "urn:ietf:params:xml:ns:xmpp-stanzas"}):up(); |
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195 | if (message) then t:tag("text"):text(message):up(); end |
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196 | return t; -- stanza ready for adding app-specific errors |
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197 | end |
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198 | |
0 | 199 | function presence(attr) |
200 | return stanza("presence", attr); | |
201 | end | |
202 | ||
262 | 203 | if do_pretty_printing then |
204 | local style_attrk = getstyle("yellow"); | |
205 | local style_attrv = getstyle("red"); | |
206 | local style_tagname = getstyle("red"); | |
207 | local style_punc = getstyle("magenta"); | |
208 | ||
209 | local attr_format = " "..getstring(style_attrk, "%s")..getstring(style_punc, "=")..getstring(style_attrv, "'%s'"); | |
210 | local top_tag_format = getstring(style_punc, "<")..getstring(style_tagname, "%s").."%s"..getstring(style_punc, ">"); | |
211 | --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, ">"); | |
212 | local tag_format = top_tag_format.."%s"..getstring(style_punc, "</")..getstring(style_tagname, "%s")..getstring(style_punc, ">"); | |
213 | function stanza_mt.pretty_print(t) | |
214 | local children_text = ""; | |
215 | for n, child in ipairs(t) do | |
216 | if type(child) == "string" then | |
217 | children_text = children_text .. xml_escape(child); | |
218 | else | |
219 | children_text = children_text .. child:pretty_print(); | |
220 | end | |
221 | end | |
222 | ||
223 | local attr_string = ""; | |
224 | if t.attr then | |
225 | 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 | |
226 | end | |
227 | return s_format(tag_format, t.name, attr_string, children_text, t.name); | |
228 | end | |
229 | ||
230 | function stanza_mt.pretty_top_tag(t) | |
231 | local attr_string = ""; | |
232 | if t.attr then | |
233 | 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 | |
234 | end | |
235 | return s_format(top_tag_format, t.name, attr_string); | |
236 | end | |
237 | else | |
238 | -- Sorry, fresh out of colours for you guys ;) | |
239 | stanza_mt.pretty_print = stanza_mt.__tostring; | |
240 | stanza_mt.pretty_top_tag = stanza_mt.top_tag; | |
241 | end | |
242 | ||
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
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243 | return _M; |