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<?php
/**
* Schema-Woven Validation API
*/
require_once WPCF7_PLUGIN_DIR . '/includes/swv/schema-holder.php';
require_once WPCF7_PLUGIN_DIR . '/includes/swv/script-loader.php';
/**
* Returns an associative array of SWV rules.
*/
function wpcf7_swv_available_rules() {
$rules = array(
'required' => 'WPCF7_SWV_RequiredRule',
'requiredfile' => 'WPCF7_SWV_RequiredFileRule',
'email' => 'WPCF7_SWV_EmailRule',
'url' => 'WPCF7_SWV_URLRule',
'tel' => 'WPCF7_SWV_TelRule',
'number' => 'WPCF7_SWV_NumberRule',
'date' => 'WPCF7_SWV_DateRule',
'file' => 'WPCF7_SWV_FileRule',
'minlength' => 'WPCF7_SWV_MinLengthRule',
'maxlength' => 'WPCF7_SWV_MaxLengthRule',
'minnumber' => 'WPCF7_SWV_MinNumberRule',
'maxnumber' => 'WPCF7_SWV_MaxNumberRule',
'mindate' => 'WPCF7_SWV_MinDateRule',
'maxdate' => 'WPCF7_SWV_MaxDateRule',
'maxfilesize' => 'WPCF7_SWV_MaxFileSizeRule',
);
return apply_filters( 'wpcf7_swv_available_rules', $rules );
}
add_action( 'wpcf7_init', 'wpcf7_swv_load_rules', 10, 0 );
/**
* Loads SWV fules.
*/
function wpcf7_swv_load_rules() {
$rules = wpcf7_swv_available_rules();
foreach ( array_keys( $rules ) as $rule ) {
$file = sprintf( '%s.php', $rule );
$path = path_join( WPCF7_PLUGIN_DIR . '/includes/swv/rules', $file );
if ( file_exists( $path ) ) {
include_once $path;
}
}
}
/**
* Creates an SWV rule object.
*
* @param string $rule_name Rule name.
* @param string|array $properties Optional. Rule properties.
* @return WPCF7_SWV_Rule|null The rule object, or null if it failed.
*/
function wpcf7_swv_create_rule( $rule_name, $properties = '' ) {
$rules = wpcf7_swv_available_rules();
if ( isset( $rules[$rule_name] ) ) {
return new $rules[$rule_name]( $properties );
}
}
/**
* Returns an associative array of JSON Schema for Contact Form 7 SWV.
*/
function wpcf7_swv_get_meta_schema() {
return array(
'$schema' => 'https://json-schema.org/draft/2020-12/schema',
'title' => 'Contact Form 7 SWV',
'description' => 'Contact Form 7 SWV meta-schema',
'type' => 'object',
'properties' => array(
'version' => array(
'type' => 'string',
),
'locale' => array(
'type' => 'string',
),
'rules' => array(
'type' => 'array',
'items' => array(
'type' => 'object',
'properties' => array(
'rule' => array(
'type' => 'string',
'enum' => array_keys( wpcf7_swv_available_rules() ),
),
'field' => array(
'type' => 'string',
'pattern' => '^[A-Za-z][-A-Za-z0-9_:]*$',
),
'error' => array(
'type' => 'string',
),
'accept' => array(
'type' => 'array',
'items' => array(
'type' => 'string',
),
),
'threshold' => array(
'type' => 'string',
),
),
'required' => array( 'rule' ),
),
),
),
);
}
/**
* The base class of SWV rules.
*/
abstract class WPCF7_SWV_Rule {
protected $properties = array();
public function __construct( $properties = '' ) {
$this->properties = wp_parse_args( $properties, array() );
}
/**
* Returns true if this rule matches the given context.
*
* @param array $context Context.
*/
public function matches( $context ) {
$field = $this->get_property( 'field' );
if ( ! empty( $context['field'] ) ) {
if ( $field and ! in_array( $field, (array) $context['field'], true ) ) {
return false;
}
}
return true;
}
/**
* Validates with this rule's logic.
*
* @param array $context Context.
*/
public function validate( $context ) {
return true;
}
/**
* Converts the properties to an array.
*
* @return array Array of properties.
*/
public function to_array() {
return (array) $this->properties;
}
/**
* Returns the property value specified by the given property name.
*
* @param string $name Property name.
* @return mixed Property value.
*/
public function get_property( $name ) {
if ( isset( $this->properties[$name] ) ) {
return $this->properties[$name];
}
}
}
/**
* The base class of SWV composite rules.
*/
abstract class WPCF7_SWV_CompositeRule extends WPCF7_SWV_Rule {
protected $rules = array();
/**
* Adds a sub-rule to this composite rule.
*
* @param WPCF7_SWV_Rule $rule Sub-rule to be added.
*/
public function add_rule( $rule ) {
if ( $rule instanceof WPCF7_SWV_Rule ) {
$this->rules[] = $rule;
}
}
/**
* Returns an iterator of sub-rules.
*/
public function rules() {
foreach ( $this->rules as $rule ) {
yield $rule;
}
}
/**
* Returns true if this rule matches the given context.
*
* @param array $context Context.
*/
public function matches( $context ) {
return true;
}
/**
* Validates with this rule's logic.
*
* @param array $context Context.
*/
public function validate( $context ) {
foreach ( $this->rules() as $rule ) {
if ( $rule->matches( $context ) ) {
$result = $rule->validate( $context );
if ( is_wp_error( $result ) ) {
return $result;
}
}
}
return true;
}
/**
* Converts the properties to an array.
*
* @return array Array of properties.
*/
public function to_array() {
$rules_arrays = array_map(
function ( $rule ) {
return $rule->to_array();
},
$this->rules
);
return array_merge(
parent::to_array(),
array(
'rules' => $rules_arrays,
)
);
}
}
/**
* The schema class as a composite rule.
*/
class WPCF7_SWV_Schema extends WPCF7_SWV_CompositeRule {
const version = 'Contact Form 7 SWV Schema 2022-03';
public function __construct( $properties = '' ) {
$this->properties = wp_parse_args( $properties, array(
'version' => self::version,
) );
}
}
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