Annotate

util/dataforms.lua @ 1044:41a0c76127f4

mod_presence: Fix for local presence subscriptions and probes
author Waqas Hussain <waqas20@gmail.com>
date Thu, 23 Apr 2009 02:48:22 +0500
parent 957:34f8cda285c4
child 1522:569d58d21612
Ignore whitespace changes - Everywhere: Within whitespace: At end of lines:
rev   line source
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1 local setmetatable = setmetatable;
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2 local pairs, ipairs = pairs, ipairs;
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3 local tostring, type = tostring, type;
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4 local t_concat = table.concat;
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5
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6 local st = require "util.stanza";
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7
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8 module "dataforms"
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9
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10 local xmlns_forms = 'jabber:x:data';
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11
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12 local form_t = {};
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13 local form_mt = { __index = form_t };
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14
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15 function new(layout)
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16 return setmetatable(layout, form_mt);
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17 end
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18
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19 function form_t.form(layout, data)
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20 local form = st.stanza("x", { xmlns = xmlns_forms, type = "form" });
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21 if layout.title then
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22 form:tag("title"):text(layout.title):up();
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23 end
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24 if layout.instructions then
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25 form:tag("instructions"):text(layout.instructions):up();
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26 end
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27 for n, field in ipairs(layout) do
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28 local field_type = field.type or "text-single";
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29 -- Add field tag
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30 form:tag("field", { type = field_type, var = field.name, label = field.label });
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31
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32 local value = data[field.name] or field.value;
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33
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34 -- Add value, depending on type
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35 if field_type == "hidden" then
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36 if type(value) == "table" then
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37 -- Assume an XML snippet
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38 form:tag("value")
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39 :add_child(value)
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40 :up();
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41 elseif value then
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42 form:tag("value"):text(tostring(value)):up();
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43 end
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44 elseif field_type == "boolean" then
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45 form:tag("value"):text((value and "1") or "0"):up();
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46 elseif field_type == "fixed" then
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47
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48 elseif field_type == "jid-multi" then
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49 for _, jid in ipairs(value) do
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50 form:tag("value"):text(jid):up();
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51 end
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52 elseif field_type == "jid-single" then
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53 form:tag("value"):text(value):up();
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54 elseif field_type == "text-single" or field_type == "text-private" then
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55 form:tag("value"):text(value):up();
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56 elseif field_type == "text-multi" then
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57 -- Split into multiple <value> tags, one for each line
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58 for line in value:gmatch("([^\r\n]+)\r?\n*") do
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59 form:tag("value"):text(line):up();
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60 end
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61 end
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62
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63 if field.required then
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64 form:tag("required"):up();
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65 end
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66
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67 -- Jump back up to list of fields
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68 form:up();
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69 end
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70 return form;
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71 end
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72
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73 local field_readers = {};
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74
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75 function form_t.data(layout, stanza)
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76 local data = {};
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77
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78 for field_tag in stanza:childtags() do
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79 local field_type = field_tag.attr.type;
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80
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81 local reader = field_readers[field_type];
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82 if reader then
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83 data[field_tag.attr.var] = reader(field_tag);
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84 end
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85
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86 end
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87 return data;
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88 end
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89
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90 field_readers["text-single"] =
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91 function (field_tag)
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92 local value = field_tag:child_with_name("value");
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93 if value then
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94 return value[1];
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95 end
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96 end
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97
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98 field_readers["text-private"] =
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99 field_readers["text-single"];
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100
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101 field_readers["text-multi"] =
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102 function (field_tag)
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103 local result = {};
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104 for value_tag in field_tag:childtags() do
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105 if value_tag.name == "value" then
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106 result[#result+1] = value_tag[1];
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107 end
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108 end
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109 return t_concat(result, "\n");
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110 end
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111
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112 field_readers["boolean"] =
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113 function (field_tag)
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114 local value = field_tag:child_with_name("value");
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115 if value then
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116 if value[1] == "1" or value[1] == "true" then
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117 return true;
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118 else
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119 return false;
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120 end
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121 end
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122 end
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123
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124 field_readers["hidden"] =
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125 function (field_tag)
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126 local value = field_tag:child_with_name("value");
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127 if value then
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128 return value[1];
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129 end
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130 end
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131
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132 return _M;
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133
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134
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135 --[=[
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136
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137 Layout:
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138 {
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139
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140 title = "MUC Configuration",
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141 instructions = [[Use this form to configure options for this MUC room.]],
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142
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143 { name = "FORM_TYPE", type = "hidden", required = true };
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144 { name = "field-name", type = "field-type", required = false };
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145 }
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146
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147
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148 --]=]