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66d4067bdfb2
util/jsonschema.lua

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util/jsonschema.lua @ 11434:66d4067bdfb2

util.jsonschema: Library for JSON Schema validation
author Kim Alvefur <zash@zash.se>
date Sat, 06 Mar 2021 21:07:53 +0100
child 11440:d5288c99bb5a
Ignore whitespace changes - Everywhere: Within whitespace: At end of lines:
rev   line source
11434
66d4067bdfb2 util.jsonschema: Library for JSON Schema validation
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1 local schema_t = {xml_t = {}}
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2
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3 local type_e = schema_t.type_e
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4
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5 local type_validators = {}
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6
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7 local function simple_validate(schema, data)
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8 if schema == "object" and type(data) == "table" then
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9 return type(data) == "table" and (next(data) == nil or type((next(data, nil))) == "string")
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10 elseif schema == "array" and type(data) == "table" then
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11 return type(data) == "table" and (next(data) == nil or type((next(data, nil))) == "number")
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12 elseif schema == "integer" then
66d4067bdfb2 util.jsonschema: Library for JSON Schema validation
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13 return math.type(data) == schema
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14 else
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15 return type(data) == schema
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16 end
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17 end
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18
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19 type_validators.string = function(schema, data)
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20
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21 if type(data) == "string" then
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22 if schema.maxLength and #data > schema.maxLength then
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23 return false
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24 end
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25 if schema.minLength and #data < schema.minLength then
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26 return false
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27 end
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28 return true
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29 end
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30 return false
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31 end
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32
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33 type_validators.number = function(schema, data)
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34 if schema.multipleOf and data % schema.multipleOf ~= 0 then
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35 return false
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36 end
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37
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38 if schema.maximum and not (data <= schema.maximum) then
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39 return false
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40 end
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41
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42 if schema.exclusiveMaximum and not (data < schema.exclusiveMaximum) then
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43 return false
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44 end
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45
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46 if schema.minimum and not (data >= schema.minimum) then
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47 return false
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48 end
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49
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50 if schema.exclusiveMinimum and not (data > schema.exclusiveMinimum) then
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51 return false
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52 end
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53
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54 return true
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55 end
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56
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57 type_validators.integer = type_validators.number
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58
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59 local function validate(schema, data)
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60 if type(schema) == "string" then
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61 return simple_validate(schema, data)
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62 end
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63 if type(schema) == "table" then
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64 if schema.allOf then
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65 for _, sub in ipairs(schema.allOf) do
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66 if not validate(sub, data) then
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67 return false
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68 end
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69 end
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70 return true
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71 end
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72
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73 if schema.oneOf then
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74 local valid = 0
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75 for _, sub in ipairs(schema.oneOf) do
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76 if validate(sub, data) then
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77 valid = valid + 1
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78 end
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79 end
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80 return valid == 1
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81 end
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82
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83 if schema.anyOf then
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84 for _, sub in ipairs(schema.anyOf) do
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85 if validate(sub, data) then
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86 return true
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87 end
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88 end
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89 return false
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90 end
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91
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92 if schema["not"] then
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93 if validate(schema["not"], data) then
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94 return false
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95 end
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96 end
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97
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98 if schema["if"] then
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99 if validate(schema["if"], data) then
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100 if schema["then"] then
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101 return validate(schema["then"], data)
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102 end
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103 else
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104 if schema["else"] then
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105 return validate(schema["else"], data)
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106 end
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107 end
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108 end
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109
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110 if not simple_validate(schema.type, data) then
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111 return false
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112 end
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113
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114 if schema.const ~= nil and schema.const ~= data then
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115 return false
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116 end
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117
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118 if schema.enum ~= nil then
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119 for _, v in ipairs(schema.enum) do
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120 if v == data then
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121 return true
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122 end
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123 end
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124 return false
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125 end
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126
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127 local validator = type_validators[schema.type]
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128 if not validator then
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129 return true
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130 end
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131
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132 return validator(schema, data)
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133 end
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134 end
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135
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136 type_validators.table = function(schema, data)
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137 if type(data) == "table" then
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138
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139 if schema.maxItems and #data > schema.maxItems then
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140 return false
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141 end
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142
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143 if schema.minItems and #data < schema.minItems then
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144 return false
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145 end
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146
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147 if schema.required then
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148 for _, k in ipairs(schema.required) do
66d4067bdfb2 util.jsonschema: Library for JSON Schema validation
Kim Alvefur <zash@zash.se>
parents:
diff changeset
149 if data[k] == nil then
66d4067bdfb2 util.jsonschema: Library for JSON Schema validation
Kim Alvefur <zash@zash.se>
parents:
diff changeset
150 return false
66d4067bdfb2 util.jsonschema: Library for JSON Schema validation
Kim Alvefur <zash@zash.se>
parents:
diff changeset
151 end
66d4067bdfb2 util.jsonschema: Library for JSON Schema validation
Kim Alvefur <zash@zash.se>
parents:
diff changeset
152 end
66d4067bdfb2 util.jsonschema: Library for JSON Schema validation
Kim Alvefur <zash@zash.se>
parents:
diff changeset
153 end
66d4067bdfb2 util.jsonschema: Library for JSON Schema validation
Kim Alvefur <zash@zash.se>
parents:
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154
66d4067bdfb2 util.jsonschema: Library for JSON Schema validation
Kim Alvefur <zash@zash.se>
parents:
diff changeset
155 if schema.properties then
66d4067bdfb2 util.jsonschema: Library for JSON Schema validation
Kim Alvefur <zash@zash.se>
parents:
diff changeset
156 for k, s in pairs(schema.properties) do
66d4067bdfb2 util.jsonschema: Library for JSON Schema validation
Kim Alvefur <zash@zash.se>
parents:
diff changeset
157 if data[k] ~= nil then
66d4067bdfb2 util.jsonschema: Library for JSON Schema validation
Kim Alvefur <zash@zash.se>
parents:
diff changeset
158 if not validate(s, data[k]) then
66d4067bdfb2 util.jsonschema: Library for JSON Schema validation
Kim Alvefur <zash@zash.se>
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diff changeset
159 return false
66d4067bdfb2 util.jsonschema: Library for JSON Schema validation
Kim Alvefur <zash@zash.se>
parents:
diff changeset
160 end
66d4067bdfb2 util.jsonschema: Library for JSON Schema validation
Kim Alvefur <zash@zash.se>
parents:
diff changeset
161 end
66d4067bdfb2 util.jsonschema: Library for JSON Schema validation
Kim Alvefur <zash@zash.se>
parents:
diff changeset
162 end
66d4067bdfb2 util.jsonschema: Library for JSON Schema validation
Kim Alvefur <zash@zash.se>
parents:
diff changeset
163 end
66d4067bdfb2 util.jsonschema: Library for JSON Schema validation
Kim Alvefur <zash@zash.se>
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164
66d4067bdfb2 util.jsonschema: Library for JSON Schema validation
Kim Alvefur <zash@zash.se>
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165 if schema.additionalProperties then
66d4067bdfb2 util.jsonschema: Library for JSON Schema validation
Kim Alvefur <zash@zash.se>
parents:
diff changeset
166 for k, v in pairs(data) do
66d4067bdfb2 util.jsonschema: Library for JSON Schema validation
Kim Alvefur <zash@zash.se>
parents:
diff changeset
167 if type(k) == "string" then
66d4067bdfb2 util.jsonschema: Library for JSON Schema validation
Kim Alvefur <zash@zash.se>
parents:
diff changeset
168 if not (schema.properties and schema.properties[k]) then
66d4067bdfb2 util.jsonschema: Library for JSON Schema validation
Kim Alvefur <zash@zash.se>
parents:
diff changeset
169 if not validate(schema.additionalProperties, v) then
66d4067bdfb2 util.jsonschema: Library for JSON Schema validation
Kim Alvefur <zash@zash.se>
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170 return false
66d4067bdfb2 util.jsonschema: Library for JSON Schema validation
Kim Alvefur <zash@zash.se>
parents:
diff changeset
171 end
66d4067bdfb2 util.jsonschema: Library for JSON Schema validation
Kim Alvefur <zash@zash.se>
parents:
diff changeset
172 end
66d4067bdfb2 util.jsonschema: Library for JSON Schema validation
Kim Alvefur <zash@zash.se>
parents:
diff changeset
173 end
66d4067bdfb2 util.jsonschema: Library for JSON Schema validation
Kim Alvefur <zash@zash.se>
parents:
diff changeset
174 end
66d4067bdfb2 util.jsonschema: Library for JSON Schema validation
Kim Alvefur <zash@zash.se>
parents:
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175 elseif schema.properties then
66d4067bdfb2 util.jsonschema: Library for JSON Schema validation
Kim Alvefur <zash@zash.se>
parents:
diff changeset
176 for k in pairs(data) do
66d4067bdfb2 util.jsonschema: Library for JSON Schema validation
Kim Alvefur <zash@zash.se>
parents:
diff changeset
177 if type(k) == "string" then
66d4067bdfb2 util.jsonschema: Library for JSON Schema validation
Kim Alvefur <zash@zash.se>
parents:
diff changeset
178 if schema.properties[k] == nil then
66d4067bdfb2 util.jsonschema: Library for JSON Schema validation
Kim Alvefur <zash@zash.se>
parents:
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179 return false
66d4067bdfb2 util.jsonschema: Library for JSON Schema validation
Kim Alvefur <zash@zash.se>
parents:
diff changeset
180 end
66d4067bdfb2 util.jsonschema: Library for JSON Schema validation
Kim Alvefur <zash@zash.se>
parents:
diff changeset
181 end
66d4067bdfb2 util.jsonschema: Library for JSON Schema validation
Kim Alvefur <zash@zash.se>
parents:
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182 end
66d4067bdfb2 util.jsonschema: Library for JSON Schema validation
Kim Alvefur <zash@zash.se>
parents:
diff changeset
183 end
66d4067bdfb2 util.jsonschema: Library for JSON Schema validation
Kim Alvefur <zash@zash.se>
parents:
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184
66d4067bdfb2 util.jsonschema: Library for JSON Schema validation
Kim Alvefur <zash@zash.se>
parents:
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185 if schema.uniqueItems then
66d4067bdfb2 util.jsonschema: Library for JSON Schema validation
Kim Alvefur <zash@zash.se>
parents:
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186
66d4067bdfb2 util.jsonschema: Library for JSON Schema validation
Kim Alvefur <zash@zash.se>
parents:
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187 local values = {}
66d4067bdfb2 util.jsonschema: Library for JSON Schema validation
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parents:
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188 for _, v in pairs(data) do
66d4067bdfb2 util.jsonschema: Library for JSON Schema validation
Kim Alvefur <zash@zash.se>
parents:
diff changeset
189 if values[v] then
66d4067bdfb2 util.jsonschema: Library for JSON Schema validation
Kim Alvefur <zash@zash.se>
parents:
diff changeset
190 return false
66d4067bdfb2 util.jsonschema: Library for JSON Schema validation
Kim Alvefur <zash@zash.se>
parents:
diff changeset
191 end
66d4067bdfb2 util.jsonschema: Library for JSON Schema validation
Kim Alvefur <zash@zash.se>
parents:
diff changeset
192 values[v] = true
66d4067bdfb2 util.jsonschema: Library for JSON Schema validation
Kim Alvefur <zash@zash.se>
parents:
diff changeset
193 end
66d4067bdfb2 util.jsonschema: Library for JSON Schema validation
Kim Alvefur <zash@zash.se>
parents:
diff changeset
194 return true
66d4067bdfb2 util.jsonschema: Library for JSON Schema validation
Kim Alvefur <zash@zash.se>
parents:
diff changeset
195 end
66d4067bdfb2 util.jsonschema: Library for JSON Schema validation
Kim Alvefur <zash@zash.se>
parents:
diff changeset
196
66d4067bdfb2 util.jsonschema: Library for JSON Schema validation
Kim Alvefur <zash@zash.se>
parents:
diff changeset
197 local item_schemas = schema.items
66d4067bdfb2 util.jsonschema: Library for JSON Schema validation
Kim Alvefur <zash@zash.se>
parents:
diff changeset
198 if item_schemas and item_schemas[1] == nil then
66d4067bdfb2 util.jsonschema: Library for JSON Schema validation
Kim Alvefur <zash@zash.se>
parents:
diff changeset
199 local item_schema = item_schemas
66d4067bdfb2 util.jsonschema: Library for JSON Schema validation
Kim Alvefur <zash@zash.se>
parents:
diff changeset
200 for i, v in pairs(data) do
66d4067bdfb2 util.jsonschema: Library for JSON Schema validation
Kim Alvefur <zash@zash.se>
parents:
diff changeset
201 if type(i) == "number" then
66d4067bdfb2 util.jsonschema: Library for JSON Schema validation
Kim Alvefur <zash@zash.se>
parents:
diff changeset
202 if not validate(item_schema, v) then
66d4067bdfb2 util.jsonschema: Library for JSON Schema validation
Kim Alvefur <zash@zash.se>
parents:
diff changeset
203 return false
66d4067bdfb2 util.jsonschema: Library for JSON Schema validation
Kim Alvefur <zash@zash.se>
parents:
diff changeset
204 end
66d4067bdfb2 util.jsonschema: Library for JSON Schema validation
Kim Alvefur <zash@zash.se>
parents:
diff changeset
205 end
66d4067bdfb2 util.jsonschema: Library for JSON Schema validation
Kim Alvefur <zash@zash.se>
parents:
diff changeset
206 end
66d4067bdfb2 util.jsonschema: Library for JSON Schema validation
Kim Alvefur <zash@zash.se>
parents:
diff changeset
207 elseif item_schemas and item_schemas[1] ~= nil then
66d4067bdfb2 util.jsonschema: Library for JSON Schema validation
Kim Alvefur <zash@zash.se>
parents:
diff changeset
208 for i, s in ipairs(item_schemas) do
66d4067bdfb2 util.jsonschema: Library for JSON Schema validation
Kim Alvefur <zash@zash.se>
parents:
diff changeset
209 validate(s, data[i])
66d4067bdfb2 util.jsonschema: Library for JSON Schema validation
Kim Alvefur <zash@zash.se>
parents:
diff changeset
210 end
66d4067bdfb2 util.jsonschema: Library for JSON Schema validation
Kim Alvefur <zash@zash.se>
parents:
diff changeset
211 end
66d4067bdfb2 util.jsonschema: Library for JSON Schema validation
Kim Alvefur <zash@zash.se>
parents:
diff changeset
212
66d4067bdfb2 util.jsonschema: Library for JSON Schema validation
Kim Alvefur <zash@zash.se>
parents:
diff changeset
213 return true
66d4067bdfb2 util.jsonschema: Library for JSON Schema validation
Kim Alvefur <zash@zash.se>
parents:
diff changeset
214 end
66d4067bdfb2 util.jsonschema: Library for JSON Schema validation
Kim Alvefur <zash@zash.se>
parents:
diff changeset
215 return false
66d4067bdfb2 util.jsonschema: Library for JSON Schema validation
Kim Alvefur <zash@zash.se>
parents:
diff changeset
216 end
66d4067bdfb2 util.jsonschema: Library for JSON Schema validation
Kim Alvefur <zash@zash.se>
parents:
diff changeset
217
66d4067bdfb2 util.jsonschema: Library for JSON Schema validation
Kim Alvefur <zash@zash.se>
parents:
diff changeset
218 type_validators.object = function(schema, data)
66d4067bdfb2 util.jsonschema: Library for JSON Schema validation
Kim Alvefur <zash@zash.se>
parents:
diff changeset
219 if type(data) == "table" then
66d4067bdfb2 util.jsonschema: Library for JSON Schema validation
Kim Alvefur <zash@zash.se>
parents:
diff changeset
220 for k in pairs(data) do
66d4067bdfb2 util.jsonschema: Library for JSON Schema validation
Kim Alvefur <zash@zash.se>
parents:
diff changeset
221 if not (type(k) == "string") then
66d4067bdfb2 util.jsonschema: Library for JSON Schema validation
Kim Alvefur <zash@zash.se>
parents:
diff changeset
222 return false
66d4067bdfb2 util.jsonschema: Library for JSON Schema validation
Kim Alvefur <zash@zash.se>
parents:
diff changeset
223 end
66d4067bdfb2 util.jsonschema: Library for JSON Schema validation
Kim Alvefur <zash@zash.se>
parents:
diff changeset
224 end
66d4067bdfb2 util.jsonschema: Library for JSON Schema validation
Kim Alvefur <zash@zash.se>
parents:
diff changeset
225
66d4067bdfb2 util.jsonschema: Library for JSON Schema validation
Kim Alvefur <zash@zash.se>
parents:
diff changeset
226 return type_validators.table(schema, data)
66d4067bdfb2 util.jsonschema: Library for JSON Schema validation
Kim Alvefur <zash@zash.se>
parents:
diff changeset
227 end
66d4067bdfb2 util.jsonschema: Library for JSON Schema validation
Kim Alvefur <zash@zash.se>
parents:
diff changeset
228 return false
66d4067bdfb2 util.jsonschema: Library for JSON Schema validation
Kim Alvefur <zash@zash.se>
parents:
diff changeset
229 end
66d4067bdfb2 util.jsonschema: Library for JSON Schema validation
Kim Alvefur <zash@zash.se>
parents:
diff changeset
230
66d4067bdfb2 util.jsonschema: Library for JSON Schema validation
Kim Alvefur <zash@zash.se>
parents:
diff changeset
231 type_validators.array = function(schema, data)
66d4067bdfb2 util.jsonschema: Library for JSON Schema validation
Kim Alvefur <zash@zash.se>
parents:
diff changeset
232 if type(data) == "table" then
66d4067bdfb2 util.jsonschema: Library for JSON Schema validation
Kim Alvefur <zash@zash.se>
parents:
diff changeset
233
66d4067bdfb2 util.jsonschema: Library for JSON Schema validation
Kim Alvefur <zash@zash.se>
parents:
diff changeset
234 for i in pairs(data) do
66d4067bdfb2 util.jsonschema: Library for JSON Schema validation
Kim Alvefur <zash@zash.se>
parents:
diff changeset
235 if not (type(i) == "number") then
66d4067bdfb2 util.jsonschema: Library for JSON Schema validation
Kim Alvefur <zash@zash.se>
parents:
diff changeset
236 return false
66d4067bdfb2 util.jsonschema: Library for JSON Schema validation
Kim Alvefur <zash@zash.se>
parents:
diff changeset
237 end
66d4067bdfb2 util.jsonschema: Library for JSON Schema validation
Kim Alvefur <zash@zash.se>
parents:
diff changeset
238 end
66d4067bdfb2 util.jsonschema: Library for JSON Schema validation
Kim Alvefur <zash@zash.se>
parents:
diff changeset
239
66d4067bdfb2 util.jsonschema: Library for JSON Schema validation
Kim Alvefur <zash@zash.se>
parents:
diff changeset
240 return type_validators.table(schema, data)
66d4067bdfb2 util.jsonschema: Library for JSON Schema validation
Kim Alvefur <zash@zash.se>
parents:
diff changeset
241 end
66d4067bdfb2 util.jsonschema: Library for JSON Schema validation
Kim Alvefur <zash@zash.se>
parents:
diff changeset
242 return false
66d4067bdfb2 util.jsonschema: Library for JSON Schema validation
Kim Alvefur <zash@zash.se>
parents:
diff changeset
243 end
66d4067bdfb2 util.jsonschema: Library for JSON Schema validation
Kim Alvefur <zash@zash.se>
parents:
diff changeset
244
66d4067bdfb2 util.jsonschema: Library for JSON Schema validation
Kim Alvefur <zash@zash.se>
parents:
diff changeset
245 return {validate = validate; schema_t = schema_t}