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b7807583de34
teal-src/util/datamapper.tl

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teal-src/util/datamapper.tl @ 11438:b7807583de34

util.datamapper: Add logic for "boolean" tags here the presence means true
author Kim Alvefur <zash@zash.se>
date Sun, 07 Mar 2021 01:41:39 +0100
parent 11437:87a684df4b65
child 11439:9abcdfdcdb01
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1 local st = require "util.stanza";
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2 local js = require "util.jsonschema"
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3
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4 local function toboolean ( s : string ) : boolean
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5 if s == "true" or s == "1" then
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6 return true
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7 elseif s == "false" or s == "0" then
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8 return false
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9 end
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10 end
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11
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12 local function parse_object (schema : js.schema_t, s : st.stanza_t) : table
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13 local out : { string : any } = {}
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14 if schema.properties then
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15 for prop, propschema in pairs(schema.properties) do
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16 -- TODO factor out, if it's generic enough
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17 local name = prop
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18 local namespace = s.attr.xmlns;
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19 local prefix : string = nil
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20 local is_attribute = false
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21 local is_text = false
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22 local name_is_value = false;
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23
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24 local proptype : js.schema_t.type_e
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25 if propschema is js.schema_t then
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26 proptype = propschema.type
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27 elseif propschema is js.schema_t.type_e then
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28 proptype = propschema
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29 end
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30
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31 if propschema is js.schema_t and propschema.xml then
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32 if propschema.xml.name then
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33 name = propschema.xml.name
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34 end
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35 if propschema.xml.namespace then
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36 namespace = propschema.xml.namespace
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37 end
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38 if propschema.xml.prefix then
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39 prefix = propschema.xml.prefix
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40 end
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41 if propschema.xml.attribute then
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42 is_attribute = true
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43 elseif propschema.xml.text then
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44 is_text = true
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45 elseif propschema.xml.x_name_is_value then
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46 name_is_value = true
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47 end
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48 end
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49
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50 if name_is_value then
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51 local c = s:get_child(nil, namespace);
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52 if c and proptype == "string" then
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53 out[prop] = c.name;
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54 elseif proptype == "boolean" and c then
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55 out[prop] = true;
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56 end
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57 elseif is_attribute then
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58 local attr = name
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59 if prefix then
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60 attr = prefix .. ':' .. name
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61 elseif namespace ~= s.attr.xmlns then
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62 attr = namespace .. "\1" .. name
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63 end
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64 if proptype == "string" then
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65 out[prop] = s.attr[attr]
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66 elseif proptype == "integer" or proptype == "number" then
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67 -- TODO floor if integer ?
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68 out[prop] = tonumber(s.attr[attr])
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69 elseif proptype == "boolean" then
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70 out[prop] = toboolean(s.attr[attr])
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71 -- else TODO
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72 end
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73
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74 elseif is_text then
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75 if proptype == "string" then
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76 out[prop] = s:get_text()
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77 elseif proptype == "integer" or proptype == "number" then
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78 out[prop] = tonumber(s:get_text())
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79 end
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80
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81 else
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82
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83 if proptype == "string" then
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84 out[prop] = s:get_child_text(name, namespace)
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85 elseif proptype == "integer" or proptype == "number" then
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86 out[prop] = tonumber(s:get_child_text(name, namespace))
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87 elseif proptype == "object" and propschema is js.schema_t then
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88 local c = s:get_child(name, namespace)
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89 if c then
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90 out[prop] = parse_object(propschema, c);
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91 end
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92 -- else TODO
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93 end
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94 end
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95 end
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96 end
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97
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98 return out
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99 end
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100
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101 local function parse (schema : js.schema_t, s : st.stanza_t) : table
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102 if schema.type == "object" then
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103 return parse_object(schema, s)
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104 end
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105 end
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106
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107 local function unparse ( schema : js.schema_t, t : table, current_name : string, current_ns : string ) : st.stanza_t
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108 if schema.type == "object" then
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109
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110 if schema.xml then
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111 if schema.xml.name then
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112 current_name = schema.xml.name
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113 end
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114 if schema.xml.namespace then
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115 current_ns = schema.xml.namespace
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116 end
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117 -- TODO prefix?
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118 end
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119
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120 local out = st.stanza(current_name, { xmlns = current_ns })
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121
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122 for prop, propschema in pairs(schema.properties) do
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123 local v = t[prop]
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124
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125 if v ~= nil then
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126 local proptype : js.schema_t.type_e
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127 if propschema is js.schema_t then
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128 proptype = propschema.type
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129 elseif propschema is js.schema_t.type_e then
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130 proptype = propschema
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131 end
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132
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133 local name = prop
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134 local namespace = current_ns
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135 local prefix : string = nil
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136 local is_attribute = false
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137 local is_text = false
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87a684df4b65 util.datamapper: Invent extension for using tag name as value
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138 local name_is_value = false;
11436
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139
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140 if propschema is js.schema_t and propschema.xml then
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141
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142 if propschema.xml.name then
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143 name = propschema.xml.name
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144 end
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145 if propschema.xml.namespace then
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146 namespace = propschema.xml.namespace
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147 end
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148
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149 if propschema.xml.prefix then
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150 prefix = propschema.xml.prefix
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151 end
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152
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153 if propschema.xml.attribute then
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154 is_attribute = true
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155 elseif propschema.xml.text then
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156 is_text = true
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157 elseif propschema.xml.x_name_is_value then
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158 name_is_value = true
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159 end
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Kim Alvefur <zash@zash.se>
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160 end
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161
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162 if is_attribute then
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163 local attr = name
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164 if prefix then
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165 attr = prefix .. ':' .. name
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166 elseif namespace ~= current_ns then
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167 attr = namespace .. "\1" .. name
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168 end
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169
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170 if proptype == "string" and v is string then
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171 out.attr[attr] = v
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172 elseif proptype == "number" and v is number then
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173 out.attr[attr] = string.format("%g", v)
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174 elseif proptype == "integer" and v is number then
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175 out.attr[attr] = string.format("%d", v)
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176 elseif proptype == "boolean" then
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177 out.attr[attr] = v and "1" or "0"
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178 end
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179 elseif is_text then
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180 if v is string then
5df9ffc25bb4 util.datamapper: Add 'unparse' for turning tables into XML
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181 out:text(v)
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182 end
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183 else
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184 local propattr : { string : string }
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Kim Alvefur <zash@zash.se>
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185 if namespace ~= current_ns then
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186 propattr = { xmlns = namespace }
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187 end
11438
b7807583de34 util.datamapper: Add logic for "boolean" tags here the presence means true
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diff changeset
188 if name_is_value then
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diff changeset
189 if proptype == "string" and v is string then
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diff changeset
190 out:tag(v, propattr):up();
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diff changeset
191 elseif proptype == "boolean" and v == true then
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diff changeset
192 out:tag(name, propattr):up();
b7807583de34 util.datamapper: Add logic for "boolean" tags here the presence means true
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diff changeset
193 end
11437
87a684df4b65 util.datamapper: Invent extension for using tag name as value
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diff changeset
194 elseif proptype == "string" and v is string then
11436
5df9ffc25bb4 util.datamapper: Add 'unparse' for turning tables into XML
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diff changeset
195 out:text_tag(name, v, propattr)
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diff changeset
196 elseif proptype == "number" and v is number then
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diff changeset
197 out:text_tag(name, string.format("%g", v), propattr)
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diff changeset
198 elseif proptype == "integer" and v is number then
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Kim Alvefur <zash@zash.se>
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diff changeset
199 out:text_tag(name, string.format("%d", v), propattr)
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diff changeset
200 elseif proptype == "boolean" and v is boolean then
5df9ffc25bb4 util.datamapper: Add 'unparse' for turning tables into XML
Kim Alvefur <zash@zash.se>
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diff changeset
201 out:text_tag(name, v and "1" or "0", propattr)
5df9ffc25bb4 util.datamapper: Add 'unparse' for turning tables into XML
Kim Alvefur <zash@zash.se>
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diff changeset
202 elseif proptype == "object" and propschema is js.schema_t and v is table then
5df9ffc25bb4 util.datamapper: Add 'unparse' for turning tables into XML
Kim Alvefur <zash@zash.se>
parents: 11435
diff changeset
203 local c = unparse(propschema, v, name, namespace);
5df9ffc25bb4 util.datamapper: Add 'unparse' for turning tables into XML
Kim Alvefur <zash@zash.se>
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diff changeset
204 if c then
5df9ffc25bb4 util.datamapper: Add 'unparse' for turning tables into XML
Kim Alvefur <zash@zash.se>
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diff changeset
205 out:add_direct_child(c);
5df9ffc25bb4 util.datamapper: Add 'unparse' for turning tables into XML
Kim Alvefur <zash@zash.se>
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diff changeset
206 end
5df9ffc25bb4 util.datamapper: Add 'unparse' for turning tables into XML
Kim Alvefur <zash@zash.se>
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diff changeset
207 -- else TODO
5df9ffc25bb4 util.datamapper: Add 'unparse' for turning tables into XML
Kim Alvefur <zash@zash.se>
parents: 11435
diff changeset
208 end
5df9ffc25bb4 util.datamapper: Add 'unparse' for turning tables into XML
Kim Alvefur <zash@zash.se>
parents: 11435
diff changeset
209 end
5df9ffc25bb4 util.datamapper: Add 'unparse' for turning tables into XML
Kim Alvefur <zash@zash.se>
parents: 11435
diff changeset
210 end
5df9ffc25bb4 util.datamapper: Add 'unparse' for turning tables into XML
Kim Alvefur <zash@zash.se>
parents: 11435
diff changeset
211 end
5df9ffc25bb4 util.datamapper: Add 'unparse' for turning tables into XML
Kim Alvefur <zash@zash.se>
parents: 11435
diff changeset
212 return out;
5df9ffc25bb4 util.datamapper: Add 'unparse' for turning tables into XML
Kim Alvefur <zash@zash.se>
parents: 11435
diff changeset
213
5df9ffc25bb4 util.datamapper: Add 'unparse' for turning tables into XML
Kim Alvefur <zash@zash.se>
parents: 11435
diff changeset
214 end
5df9ffc25bb4 util.datamapper: Add 'unparse' for turning tables into XML
Kim Alvefur <zash@zash.se>
parents: 11435
diff changeset
215 end
5df9ffc25bb4 util.datamapper: Add 'unparse' for turning tables into XML
Kim Alvefur <zash@zash.se>
parents: 11435
diff changeset
216
11435
a1fa6202fa13 util.datamapper: Library for extracting data from stanzas
Kim Alvefur <zash@zash.se>
parents:
diff changeset
217 return {
a1fa6202fa13 util.datamapper: Library for extracting data from stanzas
Kim Alvefur <zash@zash.se>
parents:
diff changeset
218 parse = parse,
11436
5df9ffc25bb4 util.datamapper: Add 'unparse' for turning tables into XML
Kim Alvefur <zash@zash.se>
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diff changeset
219 unparse = unparse,
11435
a1fa6202fa13 util.datamapper: Library for extracting data from stanzas
Kim Alvefur <zash@zash.se>
parents:
diff changeset
220 }