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Editing: json-schema.php
<?php /** * JSON Schema API: shared functions for working with JSON Schema. * * @package WordPress * @subpackage JSON_Schema * @since 7.1.0 */ /** * Gets the JSON Schema keywords allowed for a given schema profile. * * Use this when preparing a schema that will be consumed outside of * WordPress's server-side validation, such as by REST clients, frontend code, * or AI providers. * * The 'rest-api' profile returns the subset of JSON Schema draft-04 keywords * that the REST API has historically exposed. The 'draft-04' profile preserves * the larger draft-04 vocabulary used by clients that can consume standalone * schemas. * * Allowing a keyword to be exposed does not make WordPress validate or * sanitize values against it. * * @since 7.1.0 * * @param string $schema_profile Optional. Name of the schema profile to get keywords for. * Accepts 'rest-api' or 'draft-04'. Any other value falls * back to the 'rest-api' profile. Default 'rest-api'. * @return string[] Allowed JSON Schema keywords. */ function wp_get_json_schema_allowed_keywords( string $schema_profile = 'rest-api' ): array { $rest_keywords = rest_get_allowed_schema_keywords(); $keywords_by_profile = array( 'rest-api' => $rest_keywords, 'draft-04' => array_merge( array( '$schema', 'id', '$ref', ), $rest_keywords, array( 'required', 'allOf', 'not', 'definitions', 'dependencies', 'additionalItems', ) ), ); $allowed_keywords = $keywords_by_profile[ $schema_profile ] ?? $rest_keywords; /** * Filters the JSON Schema keywords allowed for a given schema profile. * * Use this to decide which keywords may be exposed to clients for a profile. * It does not make WordPress validate or sanitize values against the keyword. * * @since 7.1.0 * * @param string[] $allowed_keywords Allowed JSON Schema keywords. * @param string $schema_profile The schema profile the keywords are for. */ return apply_filters( 'wp_json_schema_allowed_keywords', $allowed_keywords, $schema_profile ); } /** * Prepares a JSON Schema for clients. * * Use this before exposing a schema outside of WordPress's server-side * validation, for example in REST responses, Ability metadata, or AI provider * requests. The prepared schema uses forms that JSON Schema draft-04 clients * can understand. * * WordPress-internal schema conveniences are converted or removed only where * needed to keep the exposed schema valid for the selected profile. * * @since 7.1.0 * * @param array<string, mixed> $schema The schema array. * @param string $schema_profile Optional. Name of the schema profile * whose keywords should be preserved. * Default 'draft-04'. * @return array<string, mixed> The prepared schema. */ function wp_prepare_json_schema_for_client( array $schema, string $schema_profile = 'draft-04' ): array { $allowed_keywords = array_fill_keys( wp_get_json_schema_allowed_keywords( $schema_profile ), true ); return _wp_prepare_json_schema_for_client_with_allowed_keywords( $schema, $allowed_keywords ); } /** * Prepares a JSON Schema for clients using a given keyword lookup. * * @since 7.1.0 * @access private * * @param array<string, mixed> $schema The schema array. * @param array<string, true> $allowed_keywords Lookup map of allowed JSON Schema keywords. * @return array<string, mixed> The prepared schema. */ function _wp_prepare_json_schema_for_client_with_allowed_keywords( array $schema, array $allowed_keywords ): array { if ( isset( $schema['type'] ) && 'object' === $schema['type'] && isset( $schema['default'] ) ) { $default = $schema['default']; if ( is_array( $default ) && empty( $default ) ) { $schema['default'] = (object) $default; } } $schema = array_intersect_key( $schema, $allowed_keywords ); /* * Collect draft-03 per-property `required: true` flags into a draft-04 * `required` array of property names on the parent object schema. * * This mirrors rest_validate_object_value_from_schema(), where a draft-04 * `required` array takes precedence: when one is present, per-property * booleans are ignored during validation. They are therefore left out of * the array here as well (but still stripped from the output) so the * published schema describes exactly what gets enforced. */ if ( isset( $schema['properties'] ) && is_array( $schema['properties'] ) ) { $has_required_array = isset( $schema['required'] ) && is_array( $schema['required'] ); $required = array(); foreach ( $schema['properties'] as $property => &$property_schema ) { if ( is_array( $property_schema ) && ! wp_is_numeric_array( $property_schema ) && isset( $property_schema['required'] ) && is_bool( $property_schema['required'] ) ) { if ( ! $has_required_array && true === $property_schema['required'] ) { $required[] = (string) $property; } unset( $property_schema['required'] ); } } unset( $property_schema ); /* * Property keys are unique, so the collected list needs no deduplication. * When a draft-04 array is already present, leave it untouched. */ if ( ! $has_required_array && count( $required ) > 0 ) { $schema['required'] = $required; } } /* * A boolean `required` outside of an object's property list has no draft-04 * equivalent, so drop it rather than emit an invalid keyword. */ if ( isset( $schema['required'] ) && is_bool( $schema['required'] ) ) { unset( $schema['required'] ); } /* * Sub-schema maps: keys are user-defined, values are sub-schemas. * Note: 'dependencies' values can also be property-dependency arrays * (numeric arrays of strings) which are skipped via wp_is_numeric_array(). */ foreach ( array( 'properties', 'patternProperties', 'definitions', 'dependencies' ) as $keyword ) { if ( isset( $schema[ $keyword ] ) && is_array( $schema[ $keyword ] ) ) { foreach ( $schema[ $keyword ] as $key => $child_schema ) { if ( is_array( $child_schema ) && ! wp_is_numeric_array( $child_schema ) ) { $schema[ $keyword ][ $key ] = _wp_prepare_json_schema_for_client_with_allowed_keywords( $child_schema, $allowed_keywords ); } } } } // Single sub-schema keywords. foreach ( array( 'not', 'additionalProperties', 'additionalItems' ) as $keyword ) { if ( isset( $schema[ $keyword ] ) && is_array( $schema[ $keyword ] ) && ! wp_is_numeric_array( $schema[ $keyword ] ) ) { $schema[ $keyword ] = _wp_prepare_json_schema_for_client_with_allowed_keywords( $schema[ $keyword ], $allowed_keywords ); } } // Items: single schema or tuple array of schemas. if ( isset( $schema['items'] ) && is_array( $schema['items'] ) ) { if ( ! wp_is_numeric_array( $schema['items'] ) ) { $schema['items'] = _wp_prepare_json_schema_for_client_with_allowed_keywords( $schema['items'], $allowed_keywords ); } else { foreach ( $schema['items'] as $index => $item_schema ) { if ( is_array( $item_schema ) && ! wp_is_numeric_array( $item_schema ) ) { $schema['items'][ $index ] = _wp_prepare_json_schema_for_client_with_allowed_keywords( $item_schema, $allowed_keywords ); } } } } // Array-of-schemas keywords. foreach ( array( 'anyOf', 'oneOf', 'allOf' ) as $keyword ) { if ( isset( $schema[ $keyword ] ) && is_array( $schema[ $keyword ] ) ) { foreach ( $schema[ $keyword ] as $index => $sub_schema ) { if ( is_array( $sub_schema ) && ! wp_is_numeric_array( $sub_schema ) ) { $schema[ $keyword ][ $index ] = _wp_prepare_json_schema_for_client_with_allowed_keywords( $sub_schema, $allowed_keywords ); } } } } return $schema; }
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