prosody
acc37e221940
util/dataforms.lua

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util/dataforms.lua @ 4398:acc37e221940

mod_register: Add support for additional registration fields
author Florian Zeitz <florob@babelmonkeys.de>
date Fri, 12 Aug 2011 00:01:35 +0200
parent 4397:1378e3c79c34
child 4434:51a7c85751b9
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rev   line source
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1 -- Prosody IM
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2 -- Copyright (C) 2008-2010 Matthew Wild
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3 -- Copyright (C) 2008-2010 Waqas Hussain
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4 --
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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 local setmetatable = setmetatable;
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10 local pairs, ipairs = pairs, ipairs;
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11 local tostring, type, next = tostring, type, next;
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12 local t_concat = table.concat;
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13 local st = require "util.stanza";
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14 local jid_prep = require "util.jid".prep;
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15
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16 module "dataforms"
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17
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18 local xmlns_forms = 'jabber:x:data';
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19
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20 local form_t = {};
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21 local form_mt = { __index = form_t };
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22
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23 function new(layout)
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24 return setmetatable(layout, form_mt);
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25 end
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26
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27 function form_t.form(layout, data, formtype)
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28 local form = st.stanza("x", { xmlns = xmlns_forms, type = formtype or "form" });
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29 if layout.title then
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30 form:tag("title"):text(layout.title):up();
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31 end
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32 if layout.instructions then
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33 form:tag("instructions"):text(layout.instructions):up();
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34 end
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35 for n, field in ipairs(layout) do
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36 local field_type = field.type or "text-single";
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37 -- Add field tag
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38 form:tag("field", { type = field_type, var = field.name, label = field.label });
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39
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40 local value = (data and data[field.name]) or field.value;
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41
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42 if value then
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43 -- Add value, depending on type
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44 if field_type == "hidden" then
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45 if type(value) == "table" then
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46 -- Assume an XML snippet
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47 form:tag("value")
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48 :add_child(value)
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49 :up();
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50 else
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51 form:tag("value"):text(tostring(value)):up();
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52 end
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53 elseif field_type == "boolean" then
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54 form:tag("value"):text((value and "1") or "0"):up();
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55 elseif field_type == "fixed" then
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56
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57 elseif field_type == "jid-multi" then
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58 for _, jid in ipairs(value) do
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59 form:tag("value"):text(jid):up();
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60 end
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61 elseif field_type == "jid-single" then
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62 form:tag("value"):text(value):up();
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63 elseif field_type == "text-single" or field_type == "text-private" then
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64 form:tag("value"):text(value):up();
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65 elseif field_type == "text-multi" then
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66 -- Split into multiple <value> tags, one for each line
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67 for line in value:gmatch("([^\r\n]+)\r?\n*") do
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68 form:tag("value"):text(line):up();
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69 end
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70 elseif field_type == "list-single" then
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71 local has_default = false;
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72 for _, val in ipairs(value) do
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73 if type(val) == "table" then
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74 form:tag("option", { label = val.label }):tag("value"):text(val.value):up():up();
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75 if val.default and (not has_default) then
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76 form:tag("value"):text(val.value):up();
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77 has_default = true;
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78 end
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79 else
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80 form:tag("option", { label= val }):tag("value"):text(tostring(val)):up():up();
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81 end
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82 end
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83 elseif field_type == "list-multi" then
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84 for _, val in ipairs(value) do
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85 if type(val) == "table" then
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86 form:tag("option", { label = val.label }):tag("value"):text(val.value):up():up();
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87 if val.default then
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88 form:tag("value"):text(val.value):up();
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89 end
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90 else
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91 form:tag("option", { label= val }):tag("value"):text(tostring(val)):up():up();
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92 end
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93 end
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94 end
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95 end
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96
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97 if field.required then
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98 form:tag("required"):up();
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99 end
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100
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101 -- Jump back up to list of fields
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102 form:up();
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103 end
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104 return form;
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105 end
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106
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107 local field_readers = {};
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108 local field_verifiers = {};
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109
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110 function form_t.data(layout, stanza)
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111 local data = {};
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112 local errors = {};
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113
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114 for _, field in ipairs(layout) do
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115 local tag;
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116 for field_tag in stanza:childtags() do
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117 if field.name == field_tag.attr.var then
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118 tag = field_tag;
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119 break;
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120 end
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121 end
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122
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123 local reader = field_readers[field.type];
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124 local verifier = field.verifier or field_verifiers[field.type];
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125 if reader then
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126 data[field.name] = reader(tag);
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127 if verifier then
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128 errors[field.name] = verifier(data[field.name], tag, field.required);
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129 end
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130 end
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131 end
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132 if next(errors) then
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133 return data, errors;
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134 end
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135 return data;
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136 end
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137
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138 field_readers["text-single"] =
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139 function (field_tag)
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140 local value = field_tag:child_with_name("value");
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141 if value then
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142 return value[1];
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143 end
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144 end
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145
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146 field_verifiers["text-single"] =
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147 function (data, field_tag, required)
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148 if ((not data) or (#data == 0)) and required then
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149 return "Required value missing";
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150 end
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151 end
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152
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153 field_readers["text-private"] =
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154 field_readers["text-single"];
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155
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156 field_verifiers["text-private"] =
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157 field_verifiers["text-single"];
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158
1944
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159 field_readers["jid-single"] =
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160 field_readers["text-single"];
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161
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162 field_verifiers["jid-single"] =
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163 function (data, field_tag, required)
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164 if #data == 0 and required then
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165 return "Required value missing";
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166 end
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167 if not jid_prep(data) then
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168 return "Invalid JID";
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169 end
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170 end
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171
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172 field_readers["jid-multi"] =
2070
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173 function (field_tag)
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174 local result = {};
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175 for value_tag in field_tag:childtags() do
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176 if value_tag.name == "value" then
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177 result[#result+1] = value_tag[1];
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178 end
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179 end
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180 return result;
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181 end
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182
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183 field_verifiers["jid-multi"] =
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184 function (data, field_tag, required)
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185 if #data == 0 and required then
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186 return "Required value missing";
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187 end
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188
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189 for _, jid in ipairs(data) do
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190 if not jid_prep(jid) then
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191 return "Invalid JID";
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192 end
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193 end
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194 end
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195
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196 field_readers["text-multi"] =
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197 function (field_tag)
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198 local result = {};
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199 for value_tag in field_tag:childtags() do
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200 if value_tag.name == "value" then
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201 result[#result+1] = value_tag[1];
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202 end
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203 end
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204 return t_concat(result, "\n");
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205 end
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206
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207 field_verifiers["text-multi"] =
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208 field_verifiers["text-single"];
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209
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diff changeset
210 field_readers["list-single"] =
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diff changeset
211 field_readers["text-single"];
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diff changeset
212
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213 field_verifiers["list-single"] =
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214 field_verifiers["text-single"];
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215
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216 field_readers["list-multi"] =
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217 function (field_tag)
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218 local result = {};
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219 for value_tag in field_tag:childtags() do
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220 if value_tag.name == "value" then
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221 result[#result+1] = value_tag[1];
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diff changeset
222 end
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223 end
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224 return result;
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diff changeset
225 end
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226
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227 field_verifiers["list-multi"] =
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228 function (data, field_tag, required)
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229 if #data == 0 and required then
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230 return "Required value missing";
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diff changeset
231 end
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232 end
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233
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234 field_readers["boolean"] =
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diff changeset
235 function (field_tag)
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236 local value = field_tag:child_with_name("value");
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diff changeset
237 if value then
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diff changeset
238 if value[1] == "1" or value[1] == "true" then
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diff changeset
239 return true;
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diff changeset
240 else
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diff changeset
241 return false;
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diff changeset
242 end
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243 end
955
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diff changeset
244 end
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245
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246 field_verifiers["boolean"] =
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247 function (data, field_tag, required)
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248 data = field_readers["text-single"](field_tag);
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diff changeset
249 if #data == 0 and required then
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250 return "Required value missing";
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diff changeset
251 end
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diff changeset
252 if data ~= "1" and data ~= "true" and data ~= "0" and data ~= "false" then
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diff changeset
253 return "Invalid boolean representation";
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diff changeset
254 end
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255 end
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diff changeset
256
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diff changeset
257 field_readers["hidden"] =
955
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diff changeset
258 function (field_tag)
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diff changeset
259 local value = field_tag:child_with_name("value");
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diff changeset
260 if value then
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diff changeset
261 return value[1];
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diff changeset
262 end
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parents: 954
diff changeset
263 end
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264
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265 field_verifiers["hidden"] =
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diff changeset
266 function (data, field_tag, required)
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267 return nil;
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diff changeset
268 end
955
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diff changeset
269
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diff changeset
270 return _M;
845
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parents:
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271
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272
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diff changeset
273 --[=[
845
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parents:
diff changeset
274
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diff changeset
275 Layout:
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parents:
diff changeset
276 {
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diff changeset
277
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278 title = "MUC Configuration",
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279 instructions = [[Use this form to configure options for this MUC room.]],
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280
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281 { name = "FORM_TYPE", type = "hidden", required = true };
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282 { name = "field-name", type = "field-type", required = false };
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283 }
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parents:
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284
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285
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286 --]=]