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<?php |
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|
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namespace Elementor\Modules\AtomicWidgets\CssConverter\ValueParsers; |
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|
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if ( ! defined( 'ABSPATH' ) ) { |
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exit; // Exit if accessed directly. |
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} |
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|
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/** |
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* Stateless tokenizer shared by the box shorthands and shorthand expanders. Splits a CSS value on |
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* whitespace runs that sit at parenthesis depth 0, so function values such as calc(50% - 10px) or |
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* rgb(0, 0, 0) stay intact as a single token. |
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*/ |
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class Css_Token_Splitter { |
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/** |
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* Split a CSS value on top-level commas (paren-aware), trimming each segment. |
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* |
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* @return string[] |
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*/ |
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public static function split_by_comma( string $value ): array { |
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$tokens = []; |
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$current = ''; |
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$depth = 0; |
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$length = strlen( $value ); |
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|
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for ( $i = 0; $i < $length; $i++ ) { |
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$char = $value[ $i ]; |
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|
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if ( '(' === $char ) { |
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++$depth; |
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} elseif ( ')' === $char ) { |
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$depth = max( 0, $depth - 1 ); |
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} |
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|
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if ( 0 === $depth && ',' === $char ) { |
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$tokens[] = trim( $current ); |
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$current = ''; |
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continue; |
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} |
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|
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$current .= $char; |
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} |
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|
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$last = trim( $current ); |
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|
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if ( '' !== $last ) { |
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$tokens[] = $last; |
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} |
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|
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return $tokens; |
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} |
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|
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/** |
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* @return string[] |
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*/ |
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public static function split_by_whitespace( string $value ): array { |
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$tokens = []; |
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$current = ''; |
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$depth = 0; |
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$length = strlen( $value ); |
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|
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for ( $i = 0; $i < $length; $i++ ) { |
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$char = $value[ $i ]; |
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|
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if ( '(' === $char ) { |
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++$depth; |
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} elseif ( ')' === $char ) { |
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$depth = max( 0, $depth - 1 ); |
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} |
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|
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if ( 0 === $depth && ( ' ' === $char || "\t" === $char || "\n" === $char ) ) { |
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if ( '' !== $current ) { |
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$tokens[] = $current; |
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$current = ''; |
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} |
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|
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continue; |
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} |
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|
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$current .= $char; |
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} |
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|
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if ( '' !== $current ) { |
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$tokens[] = $current; |
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} |
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|
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return $tokens; |
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} |
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} |
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|
