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util/stanza.lua @ 442:722f63c70a77
Makefile now works on windows with Microsoft's compiler
| author | Waqas Hussain <waqas20@gmail.com> |
|---|---|
| date | Thu, 27 Nov 2008 21:49:31 +0500 |
| parent | 373:dd0345edeaf4 |
| child | 519:cccd610a0ef9 |
| rev | line source |
|---|---|
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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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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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Waqas Hussain <waqas20@gmail.com>
parents:
30
diff
changeset
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196 return t; -- stanza ready for adding app-specific errors |
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44800be871f5
User registration, etc (jabber:iq:register)
Waqas Hussain <waqas20@gmail.com>
parents:
30
diff
changeset
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197 end |
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44800be871f5
User registration, etc (jabber:iq:register)
Waqas Hussain <waqas20@gmail.com>
parents:
30
diff
changeset
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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 | |
|
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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; |