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local schema_t = {xml_t = {}}
local type_e = schema_t.type_e
local type_validators = {}
local function simple_validate(schema, data)
if schema == "object" and type(data) == "table" then
return type(data) == "table" and (next(data) == nil or type((next(data, nil))) == "string")
elseif schema == "array" and type(data) == "table" then
return type(data) == "table" and (next(data) == nil or type((next(data, nil))) == "number")
elseif schema == "integer" then
return math.type(data) == schema
else
return type(data) == schema
end
end
type_validators.string = function(schema, data)
if type(data) == "string" then
if schema.maxLength and #data > schema.maxLength then
return false
end
if schema.minLength and #data < schema.minLength then
return false
end
return true
end
return false
end
type_validators.number = function(schema, data)
if schema.multipleOf and data % schema.multipleOf ~= 0 then
return false
end
if schema.maximum and not (data <= schema.maximum) then
return false
end
if schema.exclusiveMaximum and not (data < schema.exclusiveMaximum) then
return false
end
if schema.minimum and not (data >= schema.minimum) then
return false
end
if schema.exclusiveMinimum and not (data > schema.exclusiveMinimum) then
return false
end
return true
end
type_validators.integer = type_validators.number
local function validate(schema, data)
if type(schema) == "boolean" then
return schema
end
if type(schema) == "string" then
return simple_validate(schema, data)
end
if type(schema) == "table" then
if schema.allOf then
for _, sub in ipairs(schema.allOf) do
if not validate(sub, data) then
return false
end
end
return true
end
if schema.oneOf then
local valid = 0
for _, sub in ipairs(schema.oneOf) do
if validate(sub, data) then
valid = valid + 1
end
end
return valid == 1
end
if schema.anyOf then
for _, sub in ipairs(schema.anyOf) do
if validate(sub, data) then
return true
end
end
return false
end
if schema["not"] then
if validate(schema["not"], data) then
return false
end
end
if schema["if"] then
if validate(schema["if"], data) then
if schema["then"] then
return validate(schema["then"], data)
end
else
if schema["else"] then
return validate(schema["else"], data)
end
end
end
if not simple_validate(schema.type, data) then
return false
end
if schema.const ~= nil and schema.const ~= data then
return false
end
if schema.enum ~= nil then
for _, v in ipairs(schema.enum) do
if v == data then
return true
end
end
return false
end
local validator = type_validators[schema.type]
if not validator then
return true
end
return validator(schema, data)
end
end
type_validators.table = function(schema, data)
if type(data) == "table" then
if schema.maxItems and #data > schema.maxItems then
return false
end
if schema.minItems and #data < schema.minItems then
return false
end
if schema.required then
for _, k in ipairs(schema.required) do
if data[k] == nil then
return false
end
end
end
if schema.properties then
for k, s in pairs(schema.properties) do
if data[k] ~= nil then
if not validate(s, data[k]) then
return false
end
end
end
end
if schema.additionalProperties then
for k, v in pairs(data) do
if type(k) == "string" then
if not (schema.properties and schema.properties[k]) then
if not validate(schema.additionalProperties, v) then
return false
end
end
end
end
elseif schema.properties then
for k in pairs(data) do
if type(k) == "string" then
if schema.properties[k] == nil then
return false
end
end
end
end
if schema.uniqueItems then
local values = {}
for _, v in pairs(data) do
if values[v] then
return false
end
values[v] = true
end
return true
end
local p = 0
if schema.prefixItems then
for i, s in ipairs(schema.prefixItems) do
if validate(s, data[i]) then
p = i
else
return false
end
end
end
if schema.items then
for i = p + 1, #data do
if not validate(schema.items, data[i]) then
return false
end
end
end
if schema.contains then
local found = false
for i = 1, #data do
if validate(schema.contains, data[i]) then
found = true
break
end
end
if not found then
return false
end
end
return true
end
return false
end
type_validators.object = function(schema, data)
if type(data) == "table" then
for k in pairs(data) do
if not (type(k) == "string") then
return false
end
end
return type_validators.table(schema, data)
end
return false
end
type_validators.array = function(schema, data)
if type(data) == "table" then
for i in pairs(data) do
if not (type(i) == "number") then
return false
end
end
return type_validators.table(schema, data)
end
return false
end
return {validate = validate; schema_t = schema_t}
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