continue;

[4000] Fix | Delete

}

[4001] Fix | Delete

[4002] Fix | Delete

$at = $next_dash_at + 1;

[4003] Fix | Delete

}

[4004] Fix | Delete

[4005] Fix | Delete

// If nothing has been added it means there are no dash-letter pairs; return the name as-is.

[4006] Fix | Delete

return '' === $custom_name

[4007] Fix | Delete

? strtolower( substr( $html_attribute_name, 5 ) )

[4008] Fix | Delete

: ( $custom_name . strtolower( substr( $html_attribute_name, $was_at ) ) );

[4009] Fix | Delete

}

[4010] Fix | Delete

[4011] Fix | Delete

/**

[4012] Fix | Delete

* Returns a corresponding HTML attribute name for the given name,

[4013] Fix | Delete

* if that name were found in a JS element’s `dataset` property.

[4014] Fix | Delete

*

[4015] Fix | Delete

* Example:

[4016] Fix | Delete

*

[4017] Fix | Delete

* 'data-post-id' === wp_html_custom_data_attribute_name( 'postId' );

[4018] Fix | Delete

* 'data--before' === wp_html_custom_data_attribute_name( 'Before' );

[4019] Fix | Delete

* 'data---one---two---' === wp_html_custom_data_attribute_name( '-One--Two---' );

[4020] Fix | Delete

*

[4021] Fix | Delete

* // Not every attribute name will be interpreted as a custom data attribute.

[4022] Fix | Delete

* null === wp_html_custom_data_attribute_name( '/not-an-attribute/' );

[4023] Fix | Delete

* null === wp_html_custom_data_attribute_name( 'no spaces' );

[4024] Fix | Delete

*

[4025] Fix | Delete

* // Some very surprising names will; for example, a property whose name is the empty string.

[4026] Fix | Delete

* 'data-' === wp_html_custom_data_attribute_name( '' );

[4027] Fix | Delete

*

[4028] Fix | Delete

* @since 6.9.0

[4029] Fix | Delete

*

[4030] Fix | Delete

* @see https://html.spec.whatwg.org/#concept-domstringmap-pairs

[4031] Fix | Delete

* @see \wp_js_dataset_name()

[4032] Fix | Delete

*

[4033] Fix | Delete

* @param string $js_dataset_name Name of JS `dataset` property to transform.

[4034] Fix | Delete

* @return string|null Corresponding name of an HTML custom data attribute for the given dataset name,

[4035] Fix | Delete

* if possible to represent in HTML, otherwise `null`.

[4036] Fix | Delete

*/

[4037] Fix | Delete

function wp_html_custom_data_attribute_name( string $js_dataset_name ): ?string {

[4038] Fix | Delete

$end = strlen( $js_dataset_name );

[4039] Fix | Delete

if ( 0 === $end ) {

[4040] Fix | Delete

return 'data-';

[4041] Fix | Delete

}

[4042] Fix | Delete

[4043] Fix | Delete

/*

[4044] Fix | Delete

* If it contains characters which would end the attribute name parsing then

[4045] Fix | Delete

* something it’s not possible to represent this in HTML.

[4046] Fix | Delete

*/

[4047] Fix | Delete

if ( strcspn( $js_dataset_name, "=/> \t\f\r\n" ) !== $end ) {

[4048] Fix | Delete

return null;

[4049] Fix | Delete

}

[4050] Fix | Delete

[4051] Fix | Delete

$html_name = 'data-';

[4052] Fix | Delete

$at = 0;

[4053] Fix | Delete

$was_at = $at;

[4054] Fix | Delete

[4055] Fix | Delete

while ( $at < $end ) {

[4056] Fix | Delete

$next_upper_after = strcspn( $js_dataset_name, 'ABCDEFGHIJKLMNOPQRSTUVWXYZ', $at );

[4057] Fix | Delete

$next_upper_at = $at + $next_upper_after;

[4058] Fix | Delete

if ( $next_upper_at >= $end ) {

[4059] Fix | Delete

break;

[4060] Fix | Delete

}

[4061] Fix | Delete

[4062] Fix | Delete

$prefix = substr( $js_dataset_name, $was_at, $next_upper_at - $was_at );

[4063] Fix | Delete

$html_name .= strtolower( $prefix );

[4064] Fix | Delete

$html_name .= '-' . strtolower( $js_dataset_name[ $next_upper_at ] );

[4065] Fix | Delete

$at = $next_upper_at + 1;

[4066] Fix | Delete

$was_at = $at;

[4067] Fix | Delete

}

[4068] Fix | Delete

[4069] Fix | Delete

if ( $was_at < $end ) {

[4070] Fix | Delete

$html_name .= strtolower( substr( $js_dataset_name, $was_at ) );

[4071] Fix | Delete

}

[4072] Fix | Delete

[4073] Fix | Delete

return $html_name;

[4074] Fix | Delete

}

[4075] Fix | Delete

[4076] Fix | Delete