rss-bridge/lib/validation.php

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PHP
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<?php
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function validateData(&$data, $parameters){
$validateTextValue = function($value, $pattern = null){
if(!is_null($pattern)) {
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$filteredValue = filter_var($value,
FILTER_VALIDATE_REGEXP,
array('options' => array(
'regexp' => '/^' . $pattern . '$/'
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)
));
} else {
$filteredValue = filter_var($value);
}
if($filteredValue === false)
return null;
return $filteredValue;
};
$validateNumberValue = function($value){
$filteredValue = filter_var($value, FILTER_VALIDATE_INT);
if($filteredValue === false && !empty($value))
return null;
return $filteredValue;
};
$validateCheckboxValue = function($value){
$filteredValue = filter_var($value, FILTER_VALIDATE_BOOLEAN, FILTER_NULL_ON_FAILURE);
if(is_null($filteredValue))
return null;
return $filteredValue;
};
$validateListValue = function($value, $expectedValues){
$filteredValue = filter_var($value);
if($filteredValue === false)
return null;
if(!in_array($filteredValue, $expectedValues)) { // Check sub-values?
foreach($expectedValues as $subName => $subValue) {
if(is_array($subValue) && in_array($filteredValue, $subValue))
return $filteredValue;
}
return null;
}
return $filteredValue;
};
if(!is_array($data))
return false;
foreach($data as $name => $value) {
$registered = false;
foreach($parameters as $context => $set) {
if(array_key_exists($name, $set)) {
$registered = true;
if(!isset($set[$name]['type'])) {
$set[$name]['type'] = 'text';
}
switch($set[$name]['type']) {
case 'number':
$data[$name] = $validateNumberValue($value);
break;
case 'checkbox':
$data[$name] = $validateCheckboxValue($value);
break;
case 'list':
$data[$name] = $validateListValue($value, $set[$name]['values']);
break;
default:
case 'text':
if(isset($set[$name]['pattern'])) {
$data[$name] = $validateTextValue($value, $set[$name]['pattern']);
} else {
$data[$name] = $validateTextValue($value);
}
break;
}
if(is_null($data[$name])) {
echo 'Parameter \'' . $name . '\' is invalid!' . PHP_EOL;
return false;
}
}
}
if(!$registered)
return false;
}
return true;
}