author | Kim Alvefur <zash@zash.se> |
Tue, 23 Mar 2021 23:55:33 +0100 | |
changeset 11483 | 377a9eaf7bef |
parent 11480 | 83e127eb91f9 |
child 11485 | b2f9782497dd |
permissions | -rw-r--r-- |
11439
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util.datamapper: Library for extracting data from stanzas
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1 |
local st = require("util.stanza"); |
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util.datamapper: Fix arrays nesting one level too deep
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local schema_t = {} |
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util.datamapper: Library for extracting data from stanzas
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5 |
local function toboolean(s) |
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util.datamapper: Library for extracting data from stanzas
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if s == "true" or s == "1" then |
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util.datamapper: Library for extracting data from stanzas
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return true |
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elseif s == "false" or s == "0" then |
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return false |
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util.datamapper: Separate extraction of xml from coercion to target type
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elseif s then |
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util.datamapper: Separate extraction of xml from coercion to target type
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return true |
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util.datamapper: Separate extraction of xml from coercion to target type
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end |
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util.datamapper: Separate extraction of xml from coercion to target type
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13 |
end |
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|
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local function totype(t, s) |
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util.datamapper: Fix error on attempt to coerce nil to something
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if not s then |
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return nil |
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18 |
end |
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util.datamapper: Separate extraction of xml from coercion to target type
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if t == "string" then |
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return s |
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elseif t == "boolean" then |
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22 |
return toboolean(s) |
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elseif t == "number" or t == "integer" then |
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return tonumber(s) |
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util.datamapper: Library for extracting data from stanzas
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25 |
end |
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util.datamapper: Library for extracting data from stanzas
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end |
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util.datamapper: Library for extracting data from stanzas
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|
11458
1d9c1893cc5e
util.datamapper: Use enum instead of mutually exclusive booleans
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local value_goes = {} |
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local function unpack_propschema(propschema, propname, current_ns) |
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local proptype = "string" |
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local value_where = propname and "in_text_tag" or "in_text" |
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local name = propname |
11480
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util.datamapper: Deal with locally built stanzas missing xmlns
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local namespace |
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local prefix |
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local single_attribute |
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local enums |
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|
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if type(propschema) == "table" then |
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proptype = propschema.type |
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util.datamapper: Factor out common schema unpacking
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42 |
elseif type(propschema) == "string" then |
4e376a43fe40
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parents:
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proptype = propschema |
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parents:
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44 |
end |
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45 |
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util.datamapper: Add initial support for parsing arrays
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parents:
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if proptype == "object" or proptype == "array" then |
6a51749af7f4
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parents:
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47 |
value_where = "in_children" |
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48 |
end |
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|
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parents:
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50 |
if type(propschema) == "table" then |
4e376a43fe40
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parents:
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51 |
local xml = propschema.xml |
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52 |
if xml then |
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53 |
if xml.name then |
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54 |
name = xml.name |
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55 |
end |
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parents:
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56 |
if xml.namespace and xml.namespace ~= current_ns then |
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namespace = xml.namespace |
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58 |
end |
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if xml.prefix then |
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prefix = xml.prefix |
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61 |
end |
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util.datamapper: Add initial support for parsing arrays
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parents:
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62 |
if proptype == "array" and xml.wrapped then |
6a51749af7f4
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value_where = "in_wrapper" |
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64 |
elseif xml.attribute then |
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65 |
value_where = "in_attribute" |
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66 |
elseif xml.text then |
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value_where = "in_text" |
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68 |
elseif xml.x_name_is_value then |
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value_where = "in_tag_name" |
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elseif xml.x_single_attribute then |
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single_attribute = xml.x_single_attribute |
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value_where = "in_single_attribute" |
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73 |
end |
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74 |
end |
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75 |
if propschema["const"] then |
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enums = {propschema["const"]} |
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elseif propschema["enum"] then |
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78 |
enums = propschema["enum"] |
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79 |
end |
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80 |
end |
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81 |
|
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82 |
return proptype, value_where, name, namespace, prefix, single_attribute, enums |
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83 |
end |
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84 |
|
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85 |
local parse_object |
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86 |
local parse_array |
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87 |
|
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88 |
local function extract_value(s, value_where, proptype, name, namespace, prefix, single_attribute, enums) |
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89 |
if value_where == "in_tag_name" then |
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90 |
local c |
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91 |
if proptype == "boolean" then |
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92 |
c = s:get_child(name, namespace); |
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93 |
elseif enums and proptype == "string" then |
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94 |
|
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95 |
for i = 1, #enums do |
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96 |
c = s:get_child(enums[i], namespace); |
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97 |
if c then |
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|
98 |
break |
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99 |
end |
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100 |
end |
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101 |
else |
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102 |
c = s:get_child(nil, namespace); |
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103 |
end |
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104 |
if c then |
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105 |
return c.name |
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106 |
end |
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107 |
elseif value_where == "in_attribute" then |
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108 |
local attr = name |
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109 |
if prefix then |
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110 |
attr = prefix .. ":" .. name |
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parents:
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111 |
elseif namespace and namespace ~= s.attr.xmlns then |
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112 |
attr = namespace .. "\1" .. name |
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113 |
end |
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114 |
return s.attr[attr] |
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115 |
|
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|
116 |
elseif value_where == "in_text" then |
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117 |
return s:get_text() |
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118 |
|
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119 |
elseif value_where == "in_single_attribute" then |
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120 |
local c = s:get_child(name, namespace) |
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121 |
return c and c.attr[single_attribute] |
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122 |
elseif value_where == "in_text_tag" then |
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123 |
return s:get_child_text(name, namespace) |
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124 |
end |
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125 |
end |
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126 |
|
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127 |
function parse_object(schema, s) |
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128 |
local out = {} |
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129 |
if type(schema) == "table" and schema.properties then |
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for prop, propschema in pairs(schema.properties) do |
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131 |
|
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132 |
local proptype, value_where, name, namespace, prefix, single_attribute, enums = unpack_propschema(propschema, prop, s.attr.xmlns) |
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133 |
|
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134 |
if value_where == "in_children" and type(propschema) == "table" then |
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135 |
if proptype == "object" then |
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136 |
local c = s:get_child(name, namespace) |
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|
137 |
if c then |
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|
138 |
out[prop] = parse_object(propschema, c); |
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139 |
end |
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140 |
elseif proptype == "array" then |
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|
141 |
out[prop] = parse_array(propschema, s); |
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|
142 |
else |
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|
143 |
error("unreachable") |
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144 |
end |
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145 |
elseif value_where == "in_wrapper" and type(propschema) == "table" and proptype == "array" then |
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|
146 |
local wrapper = s:get_child(name, namespace); |
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|
147 |
if wrapper then |
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|
148 |
out[prop] = parse_array(propschema, wrapper); |
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|
149 |
end |
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|
150 |
else |
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|
151 |
local value = extract_value(s, value_where, proptype, name, namespace, prefix, single_attribute, enums) |
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|
152 |
|
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|
153 |
out[prop] = totype(proptype, value) |
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|
154 |
end |
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|
155 |
end |
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|
156 |
end |
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diff
changeset
|
157 |
|
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diff
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|
158 |
return out |
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|
159 |
end |
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|
160 |
|
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|
161 |
function parse_array(schema, s) |
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|
162 |
local itemschema = schema.items; |
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|
163 |
local proptype, value_where, child_name, namespace, prefix, single_attribute, enums = unpack_propschema(itemschema, nil, s.attr.xmlns) |
11470
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|
164 |
local attr_name |
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|
165 |
if value_where == "in_single_attribute" then |
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|
166 |
value_where = "in_attribute"; |
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|
167 |
attr_name = single_attribute; |
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changeset
|
168 |
end |
11461
6a51749af7f4
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changeset
|
169 |
local out = {} |
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|
170 |
|
11475
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changeset
|
171 |
if proptype == "object" then |
ab03de8e503e
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changeset
|
172 |
if type(itemschema) == "table" then |
ab03de8e503e
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parents:
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diff
changeset
|
173 |
for c in s:childtags(child_name, namespace) do |
ab03de8e503e
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parents:
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diff
changeset
|
174 |
table.insert(out, parse_object(itemschema, c)); |
ab03de8e503e
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diff
changeset
|
175 |
end |
ab03de8e503e
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parents:
11474
diff
changeset
|
176 |
else |
ab03de8e503e
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parents:
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diff
changeset
|
177 |
error("array items must be schema object") |
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diff
changeset
|
178 |
end |
ab03de8e503e
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Kim Alvefur <zash@zash.se>
parents:
11474
diff
changeset
|
179 |
elseif proptype == "array" then |
ab03de8e503e
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Kim Alvefur <zash@zash.se>
parents:
11474
diff
changeset
|
180 |
if type(itemschema) == "table" then |
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parents:
11474
diff
changeset
|
181 |
for c in s:childtags(child_name, namespace) do |
ab03de8e503e
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Kim Alvefur <zash@zash.se>
parents:
11474
diff
changeset
|
182 |
table.insert(out, parse_array(itemschema, c)); |
ab03de8e503e
util.datamapper: Handle nested arrays or objects in arrays
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parents:
11474
diff
changeset
|
183 |
end |
ab03de8e503e
util.datamapper: Handle nested arrays or objects in arrays
Kim Alvefur <zash@zash.se>
parents:
11474
diff
changeset
|
184 |
end |
ab03de8e503e
util.datamapper: Handle nested arrays or objects in arrays
Kim Alvefur <zash@zash.se>
parents:
11474
diff
changeset
|
185 |
else |
ab03de8e503e
util.datamapper: Handle nested arrays or objects in arrays
Kim Alvefur <zash@zash.se>
parents:
11474
diff
changeset
|
186 |
for c in s:childtags(child_name, namespace) do |
ab03de8e503e
util.datamapper: Handle nested arrays or objects in arrays
Kim Alvefur <zash@zash.se>
parents:
11474
diff
changeset
|
187 |
local value = extract_value(c, value_where, proptype, attr_name or child_name, namespace, prefix, single_attribute, enums) |
ab03de8e503e
util.datamapper: Handle nested arrays or objects in arrays
Kim Alvefur <zash@zash.se>
parents:
11474
diff
changeset
|
188 |
|
ab03de8e503e
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Kim Alvefur <zash@zash.se>
parents:
11474
diff
changeset
|
189 |
table.insert(out, totype(proptype, value)); |
ab03de8e503e
util.datamapper: Handle nested arrays or objects in arrays
Kim Alvefur <zash@zash.se>
parents:
11474
diff
changeset
|
190 |
end |
11461
6a51749af7f4
util.datamapper: Add initial support for parsing arrays
Kim Alvefur <zash@zash.se>
parents:
11460
diff
changeset
|
191 |
end |
6a51749af7f4
util.datamapper: Add initial support for parsing arrays
Kim Alvefur <zash@zash.se>
parents:
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diff
changeset
|
192 |
return out |
6a51749af7f4
util.datamapper: Add initial support for parsing arrays
Kim Alvefur <zash@zash.se>
parents:
11460
diff
changeset
|
193 |
end |
6a51749af7f4
util.datamapper: Add initial support for parsing arrays
Kim Alvefur <zash@zash.se>
parents:
11460
diff
changeset
|
194 |
|
11439
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Kim Alvefur <zash@zash.se>
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diff
changeset
|
195 |
local function parse(schema, s) |
a1fa6202fa13
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Kim Alvefur <zash@zash.se>
parents:
diff
changeset
|
196 |
if schema.type == "object" then |
a1fa6202fa13
util.datamapper: Library for extracting data from stanzas
Kim Alvefur <zash@zash.se>
parents:
diff
changeset
|
197 |
return parse_object(schema, s) |
11461
6a51749af7f4
util.datamapper: Add initial support for parsing arrays
Kim Alvefur <zash@zash.se>
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diff
changeset
|
198 |
elseif schema.type == "array" then |
6a51749af7f4
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Kim Alvefur <zash@zash.se>
parents:
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diff
changeset
|
199 |
return parse_array(schema, s) |
6a51749af7f4
util.datamapper: Add initial support for parsing arrays
Kim Alvefur <zash@zash.se>
parents:
11460
diff
changeset
|
200 |
else |
6a51749af7f4
util.datamapper: Add initial support for parsing arrays
Kim Alvefur <zash@zash.se>
parents:
11460
diff
changeset
|
201 |
error("top-level scalars unsupported") |
11439
a1fa6202fa13
util.datamapper: Library for extracting data from stanzas
Kim Alvefur <zash@zash.se>
parents:
diff
changeset
|
202 |
end |
a1fa6202fa13
util.datamapper: Library for extracting data from stanzas
Kim Alvefur <zash@zash.se>
parents:
diff
changeset
|
203 |
end |
a1fa6202fa13
util.datamapper: Library for extracting data from stanzas
Kim Alvefur <zash@zash.se>
parents:
diff
changeset
|
204 |
|
11479
9bd36e871f05
util.datamapper: Factor out conversion from any value to XML string
Kim Alvefur <zash@zash.se>
parents:
11475
diff
changeset
|
205 |
local function toxmlstring(proptype, v) |
9bd36e871f05
util.datamapper: Factor out conversion from any value to XML string
Kim Alvefur <zash@zash.se>
parents:
11475
diff
changeset
|
206 |
if proptype == "string" and type(v) == "string" then |
9bd36e871f05
util.datamapper: Factor out conversion from any value to XML string
Kim Alvefur <zash@zash.se>
parents:
11475
diff
changeset
|
207 |
return v |
9bd36e871f05
util.datamapper: Factor out conversion from any value to XML string
Kim Alvefur <zash@zash.se>
parents:
11475
diff
changeset
|
208 |
elseif proptype == "number" and type(v) == "number" then |
9bd36e871f05
util.datamapper: Factor out conversion from any value to XML string
Kim Alvefur <zash@zash.se>
parents:
11475
diff
changeset
|
209 |
return string.format("%g", v) |
9bd36e871f05
util.datamapper: Factor out conversion from any value to XML string
Kim Alvefur <zash@zash.se>
parents:
11475
diff
changeset
|
210 |
elseif proptype == "integer" and type(v) == "number" then |
9bd36e871f05
util.datamapper: Factor out conversion from any value to XML string
Kim Alvefur <zash@zash.se>
parents:
11475
diff
changeset
|
211 |
return string.format("%d", v) |
9bd36e871f05
util.datamapper: Factor out conversion from any value to XML string
Kim Alvefur <zash@zash.se>
parents:
11475
diff
changeset
|
212 |
elseif proptype == "boolean" then |
9bd36e871f05
util.datamapper: Factor out conversion from any value to XML string
Kim Alvefur <zash@zash.se>
parents:
11475
diff
changeset
|
213 |
return v and "1" or "0" |
9bd36e871f05
util.datamapper: Factor out conversion from any value to XML string
Kim Alvefur <zash@zash.se>
parents:
11475
diff
changeset
|
214 |
end |
9bd36e871f05
util.datamapper: Factor out conversion from any value to XML string
Kim Alvefur <zash@zash.se>
parents:
11475
diff
changeset
|
215 |
end |
9bd36e871f05
util.datamapper: Factor out conversion from any value to XML string
Kim Alvefur <zash@zash.se>
parents:
11475
diff
changeset
|
216 |
|
11471
88792dd2bee9
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Kim Alvefur <zash@zash.se>
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11470
diff
changeset
|
217 |
local unparse |
88792dd2bee9
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diff
changeset
|
218 |
|
88792dd2bee9
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Kim Alvefur <zash@zash.se>
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diff
changeset
|
219 |
local function unparse_property(out, v, proptype, propschema, value_where, name, namespace, current_ns, prefix, single_attribute) |
88792dd2bee9
util.datamapper: Factor out handling of object properties for array reuse
Kim Alvefur <zash@zash.se>
parents:
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diff
changeset
|
220 |
if value_where == "in_attribute" then |
88792dd2bee9
util.datamapper: Factor out handling of object properties for array reuse
Kim Alvefur <zash@zash.se>
parents:
11470
diff
changeset
|
221 |
local attr = name |
88792dd2bee9
util.datamapper: Factor out handling of object properties for array reuse
Kim Alvefur <zash@zash.se>
parents:
11470
diff
changeset
|
222 |
if prefix then |
88792dd2bee9
util.datamapper: Factor out handling of object properties for array reuse
Kim Alvefur <zash@zash.se>
parents:
11470
diff
changeset
|
223 |
attr = prefix .. ":" .. name |
11480
83e127eb91f9
util.datamapper: Deal with locally built stanzas missing xmlns
Kim Alvefur <zash@zash.se>
parents:
11479
diff
changeset
|
224 |
elseif namespace and namespace ~= current_ns then |
11471
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225 |
attr = namespace .. "\1" .. name |
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226 |
end |
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227 |
|
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out.attr[attr] = toxmlstring(proptype, v) |
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229 |
elseif value_where == "in_text" then |
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230 |
out:text(toxmlstring(proptype, v)) |
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elseif value_where == "in_single_attribute" then |
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232 |
assert(single_attribute) |
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233 |
local propattr = {} |
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234 |
|
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|
235 |
if namespace and namespace ~= current_ns then |
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propattr.xmlns = namespace |
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237 |
end |
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|
238 |
|
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239 |
propattr[single_attribute] = toxmlstring(proptype, v) |
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|
240 |
out:tag(name, propattr):up(); |
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|
241 |
|
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|
242 |
else |
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|
243 |
local propattr |
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|
244 |
if namespace ~= current_ns then |
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|
245 |
propattr = {xmlns = namespace} |
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|
246 |
end |
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|
247 |
if value_where == "in_tag_name" then |
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|
248 |
if proptype == "string" and type(v) == "string" then |
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|
249 |
out:tag(v, propattr):up(); |
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|
250 |
elseif proptype == "boolean" and v == true then |
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changeset
|
251 |
out:tag(name, propattr):up(); |
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|
252 |
end |
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|
253 |
elseif proptype == "object" and type(propschema) == "table" and type(v) == "table" then |
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|
254 |
local c = unparse(propschema, v, name, namespace); |
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|
255 |
if c then |
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|
256 |
out:add_direct_child(c); |
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changeset
|
257 |
end |
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changeset
|
258 |
elseif proptype == "array" and type(propschema) == "table" and type(v) == "table" then |
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changeset
|
259 |
if value_where == "in_wrapper" then |
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diff
changeset
|
260 |
local c = unparse(propschema, v, name, namespace); |
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changeset
|
261 |
if c then |
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parents:
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changeset
|
262 |
out:add_direct_child(c); |
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parents:
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diff
changeset
|
263 |
end |
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Kim Alvefur <zash@zash.se>
parents:
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diff
changeset
|
264 |
else |
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parents:
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diff
changeset
|
265 |
unparse(propschema, v, name, namespace, out); |
88792dd2bee9
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parents:
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diff
changeset
|
266 |
end |
11479
9bd36e871f05
util.datamapper: Factor out conversion from any value to XML string
Kim Alvefur <zash@zash.se>
parents:
11475
diff
changeset
|
267 |
else |
9bd36e871f05
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Kim Alvefur <zash@zash.se>
parents:
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diff
changeset
|
268 |
out:text_tag(name, toxmlstring(proptype, v), propattr) |
11471
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diff
changeset
|
269 |
end |
88792dd2bee9
util.datamapper: Factor out handling of object properties for array reuse
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parents:
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diff
changeset
|
270 |
end |
88792dd2bee9
util.datamapper: Factor out handling of object properties for array reuse
Kim Alvefur <zash@zash.se>
parents:
11470
diff
changeset
|
271 |
end |
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parents:
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diff
changeset
|
272 |
|
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diff
changeset
|
273 |
function unparse(schema, t, current_name, current_ns, ctx) |
11440
5df9ffc25bb4
util.datamapper: Add 'unparse' for turning tables into XML
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diff
changeset
|
274 |
|
11462
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diff
changeset
|
275 |
if schema.xml then |
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parents:
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diff
changeset
|
276 |
if schema.xml.name then |
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parents:
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diff
changeset
|
277 |
current_name = schema.xml.name |
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diff
changeset
|
278 |
end |
0e00fa518688
util.datamapper: Limited support for unparsing simple arrays of strings
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parents:
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diff
changeset
|
279 |
if schema.xml.namespace then |
0e00fa518688
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parents:
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diff
changeset
|
280 |
current_ns = schema.xml.namespace |
11440
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diff
changeset
|
281 |
end |
5df9ffc25bb4
util.datamapper: Add 'unparse' for turning tables into XML
Kim Alvefur <zash@zash.se>
parents:
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diff
changeset
|
282 |
|
11462
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parents:
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diff
changeset
|
283 |
end |
0e00fa518688
util.datamapper: Limited support for unparsing simple arrays of strings
Kim Alvefur <zash@zash.se>
parents:
11461
diff
changeset
|
284 |
|
11466
d1982b7eb00d
util.datamapper: Fix arrays nesting one level too deep
Kim Alvefur <zash@zash.se>
parents:
11465
diff
changeset
|
285 |
local out = ctx or st.stanza(current_name, {xmlns = current_ns}) |
11462
0e00fa518688
util.datamapper: Limited support for unparsing simple arrays of strings
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parents:
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diff
changeset
|
286 |
|
0e00fa518688
util.datamapper: Limited support for unparsing simple arrays of strings
Kim Alvefur <zash@zash.se>
parents:
11461
diff
changeset
|
287 |
if schema.type == "object" then |
11440
5df9ffc25bb4
util.datamapper: Add 'unparse' for turning tables into XML
Kim Alvefur <zash@zash.se>
parents:
11439
diff
changeset
|
288 |
|
5df9ffc25bb4
util.datamapper: Add 'unparse' for turning tables into XML
Kim Alvefur <zash@zash.se>
parents:
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diff
changeset
|
289 |
for prop, propschema in pairs(schema.properties) do |
5df9ffc25bb4
util.datamapper: Add 'unparse' for turning tables into XML
Kim Alvefur <zash@zash.se>
parents:
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diff
changeset
|
290 |
local v = t[prop] |
5df9ffc25bb4
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parents:
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diff
changeset
|
291 |
|
5df9ffc25bb4
util.datamapper: Add 'unparse' for turning tables into XML
Kim Alvefur <zash@zash.se>
parents:
11439
diff
changeset
|
292 |
if v ~= nil then |
11460
4e376a43fe40
util.datamapper: Factor out common schema unpacking
Kim Alvefur <zash@zash.se>
parents:
11459
diff
changeset
|
293 |
local proptype, value_where, name, namespace, prefix, single_attribute = unpack_propschema(propschema, prop, current_ns) |
11471
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diff
changeset
|
294 |
unparse_property(out, v, proptype, propschema, value_where, name, namespace, current_ns, prefix, single_attribute) |
11440
5df9ffc25bb4
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parents:
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diff
changeset
|
295 |
end |
5df9ffc25bb4
util.datamapper: Add 'unparse' for turning tables into XML
Kim Alvefur <zash@zash.se>
parents:
11439
diff
changeset
|
296 |
end |
5df9ffc25bb4
util.datamapper: Add 'unparse' for turning tables into XML
Kim Alvefur <zash@zash.se>
parents:
11439
diff
changeset
|
297 |
return out |
5df9ffc25bb4
util.datamapper: Add 'unparse' for turning tables into XML
Kim Alvefur <zash@zash.se>
parents:
11439
diff
changeset
|
298 |
|
11462
0e00fa518688
util.datamapper: Limited support for unparsing simple arrays of strings
Kim Alvefur <zash@zash.se>
parents:
11461
diff
changeset
|
299 |
elseif schema.type == "array" then |
11472
348b191cd850
util.datamapper: Complete array building support
Kim Alvefur <zash@zash.se>
parents:
11471
diff
changeset
|
300 |
local proptype, value_where, name, namespace, prefix, single_attribute = unpack_propschema(schema.items, current_name, current_ns) |
348b191cd850
util.datamapper: Complete array building support
Kim Alvefur <zash@zash.se>
parents:
11471
diff
changeset
|
301 |
for _, item in ipairs(t) do |
348b191cd850
util.datamapper: Complete array building support
Kim Alvefur <zash@zash.se>
parents:
11471
diff
changeset
|
302 |
unparse_property(out, item, proptype, schema.items, value_where, name, namespace, current_ns, prefix, single_attribute) |
11462
0e00fa518688
util.datamapper: Limited support for unparsing simple arrays of strings
Kim Alvefur <zash@zash.se>
parents:
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diff
changeset
|
303 |
end |
0e00fa518688
util.datamapper: Limited support for unparsing simple arrays of strings
Kim Alvefur <zash@zash.se>
parents:
11461
diff
changeset
|
304 |
return out |
11440
5df9ffc25bb4
util.datamapper: Add 'unparse' for turning tables into XML
Kim Alvefur <zash@zash.se>
parents:
11439
diff
changeset
|
305 |
end |
5df9ffc25bb4
util.datamapper: Add 'unparse' for turning tables into XML
Kim Alvefur <zash@zash.se>
parents:
11439
diff
changeset
|
306 |
end |
5df9ffc25bb4
util.datamapper: Add 'unparse' for turning tables into XML
Kim Alvefur <zash@zash.se>
parents:
11439
diff
changeset
|
307 |
|
5df9ffc25bb4
util.datamapper: Add 'unparse' for turning tables into XML
Kim Alvefur <zash@zash.se>
parents:
11439
diff
changeset
|
308 |
return {parse = parse; unparse = unparse} |