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HTML API: Simplify the class_list loop #8076

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HTML API: Simplify the class_list loop #8076

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16 changes: 3 additions & 13 deletions src/wp-includes/html-api/class-wp-html-tag-processor.php
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Original file line number Diff line number Diff line change
Expand Up @@ -1183,25 +1183,15 @@ public function class_list() {

$is_quirks = self::QUIRKS_MODE === $this->compat_mode;

$at = 0;
$at = strspn( $class, " \t\f\r\n" );
while ( $at < strlen( $class ) ) {
// Skip past any initial boundary characters.
$at += strspn( $class, " \t\f\r\n", $at );
if ( $at >= strlen( $class ) ) {
return;
}

// Find the byte length until the next boundary.
$length = strcspn( $class, " \t\f\r\n", $at );
if ( 0 === $length ) {
return;
}

$name = str_replace( "\x00", "\u{FFFD}", substr( $class, $at, $length ) );
$name = str_replace( "\x00", "\u{FFFD}", substr( $class, $at, $length ) );
if ( $is_quirks ) {
$name = strtolower( $name );
}
$at += $length;
$at += $length + strspn( $class, " \t\f\r\n", $at + $length );

/*
* It's expected that the number of class names for a given tag is relatively small.
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