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1408 lines
42 KiB
1408 lines
42 KiB
<?php
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/**
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* CSSTidy Parsing PHP Class
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*
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* @package TablePress
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* @subpackage CSS
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* @author Florian Schmitz, Brett Zamir, Nikolay Matsievsky, Cedric Morin, Christopher Finke, Mark Scherer, Tobias Bäthge
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* @since 1.0.0
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*/
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// Prohibit direct script loading.
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defined( 'ABSPATH' ) || die( 'No direct script access allowed!' );
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/**
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* Load the class for printing CSS code.
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*
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* @since 1.0.0
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*/
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require __DIR__ . '/class.csstidy_print.php';
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/**
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* Load the class for optimising CSS code.
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*
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* @since 1.0.0
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*/
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require __DIR__ . '/class.csstidy_optimise.php';
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/**
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* CSS Parser class
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*
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* This class represents a CSS parser which reads CSS code and saves it in an array.
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* In opposite to most other CSS parsers, it does not use regular expressions and
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* thus has full CSS2 support and a higher reliability.
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* Additionally to that, it applies some optimizations and fixes to the CSS code.
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*
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* @package CSSTidy
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* @since 1.0.0
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*/
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class TablePress_CSSTidy {
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/**
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* Defines constants.
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*
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* @since 1.0.0
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*/
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const AT_START = 1;
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const AT_END = 2;
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const SEL_START = 3;
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const SEL_END = 4;
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const PROPERTY = 5;
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const VALUE = 6;
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const COMMENT = 7;
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const IMPORTANT_COMMENT = 8;
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const DEFAULT_AT = 41;
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/**
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* The parsed CSS.
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*
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* This array is empty if preserve_css is on.
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*
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* @since 1.0.0
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* @var array
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*/
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public $css = array();
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/**
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* The raw parsed CSS.
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*
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* @since 1.0.0
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* @var array
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*/
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public $tokens = array();
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/**
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* Instance of the CSS Printer class.
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*
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* @since 1.0.0
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* @var TablePress_CSSTidy_Print
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*/
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public $print;
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/**
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* Instance of the CSS Optimiser class.
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*
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* @since 1.0.0
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* @var TablePress_CSSTidy_Optimise
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*/
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public $optimise;
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/**
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* The CSS charset.
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*
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* @since 1.0.0
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* @var string
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*/
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public $charset = '';
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/**
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* All @import URLs.
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*
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* @since 1.0.0
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* @var array
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*/
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public $import = array();
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/**
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* The namespace.
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*
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* @since 1.0.0
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* @var string
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*/
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public $namespace = '';
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/**
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* The settings.
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*
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* @since 1.0.0
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* @var array
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*/
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protected $settings = array();
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/**
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* The parser-status.
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*
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* Possible values:
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* - is = in selector
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* - ip = in property
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* - iv = in value
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* - instr = in string (started at " or ' or ( )
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* - ic = in comment (ignore everything)
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* - at = in @-block
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*
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* @since 1.0.0
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* @var string
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*/
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protected $status = 'is';
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/**
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* The current at rule (@media).
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*
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* @since 1.0.0
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* @var string
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*/
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public $at = '';
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/**
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* The at rule for next selector (during @font-face or other @).
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*
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* @since 1.0.0
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* @var string|int
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*/
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protected $next_selector_at = '';
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/**
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* The current selector.
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*
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* @since 1.0.0
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* @var string
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*/
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public $selector = '';
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/**
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* The current property.
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*
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* @since 1.0.0
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* @var string
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*/
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public $property = '';
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/**
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* The position of , in selectors.
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*
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* @since 1.0.0
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* @var array
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*/
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protected $sel_separate = array();
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/**
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* The current value.
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*
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* @since 1.0.0
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* @var string
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*/
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public $value = '';
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/**
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* The current sub-value.
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*
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* Example for a sub-value: In the CSS rule
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* background: url(foo.png) red no-repeat;
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* "url(foo.png)", "red", and "no-repeat" are sub-values,
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* separated by whitespace.
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*
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* @since 1.0.0
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* @var string
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*/
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public $sub_value = '';
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/**
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* All sub-values for a property.
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*
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* @since 1.0.0
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* @var array
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*/
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protected $sub_value_arr = array();
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/**
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* The stack of characters that opened the current strings.
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*
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* @since 1.0.0
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* @var array
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*/
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public $str_char = array();
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/**
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* [$cur_string description]
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*
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* @since 1.0.0
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* @var array
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*/
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public $cur_string = array();
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/**
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* Status from which the parser switched to ic or instr
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*
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* @since 1.0.0
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* @var array
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*/
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protected $from = array();
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/**
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* True if in invalid at-rule.
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*
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* @since 1.0.0
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* @var bool
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*/
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protected $invalid_at = false;
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/**
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* True if something has been added to the current selector.
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*
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* @since 1.0.0
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* @var bool
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*/
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protected $added = false;
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/**
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* The message log.
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*
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* @since 1.0.0
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* @var array
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*/
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public $log = array();
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/**
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* The line number.
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*
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* @since 1.0.0
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* @var int
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*/
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protected $line = 1;
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/**
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* Marks if we need to leave quotes for a string.
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*
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* @since 1.0.0
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* @var array
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*/
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protected $quoted_string = array();
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/**
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* List of tokens.
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*
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* @since 1.0.0
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* @var string
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*/
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protected $tokens_list = '';
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/**
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* Various CSS Data for CSSTidy.
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*
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* @since 1.0.0
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* @var array
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*/
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public $data = array();
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/**
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* The output templates.
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*
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* @since 1.0.0
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* @var array
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*/
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public $template = array();
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/**
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* Loads standard template and sets default settings.
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*
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* @since 1.0.0
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*/
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public function __construct() {
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$this->data = require __DIR__ . '/data.inc.php';
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$this->settings['remove_bslash'] = true;
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$this->settings['compress_colors'] = true;
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$this->settings['compress_font-weight'] = true;
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$this->settings['lowercase_s'] = false;
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/*
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* 1 common shorthands optimization
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* 2 + font property optimization
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* 3 + background property optimization
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*/
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$this->settings['optimise_shorthands'] = 1;
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$this->settings['remove_last_;'] = true;
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// Rewrite all properties with lower case, better for later gzipping.
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$this->settings['case_properties'] = 1;
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/*
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* Sort properties in alphabetic order, better for later gzipping,
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* but can cause trouble in case of overriding same properties or using hacks.
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*/
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$this->settings['sort_properties'] = false;
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/*
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* 1, 3, 5, etc -- Enable sorting selectors inside @media: a{}b{}c{}.
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* 2, 5, 8, etc -- Enable sorting selectors inside one CSS declaration: a,b,c{}.
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* Preserve order by default cause it can break functionality.
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*/
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$this->settings['sort_selectors'] = 0;
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// Is dangerous to be used: CSS is broken sometimes.
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$this->settings['merge_selectors'] = 0;
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// Whether to preserve browser hacks.
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$this->settings['discard_invalid_selectors'] = false;
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$this->settings['discard_invalid_properties'] = false;
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$this->settings['css_level'] = 'CSS3.0';
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$this->settings['preserve_css'] = false;
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$this->settings['timestamp'] = false;
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$this->settings['template'] = ''; // say that property exists.
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$this->set_cfg( 'template', 'default' ); // Call load_template.
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$this->print = new TablePress_CSSTidy_Print( $this );
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$this->optimise = new TablePress_CSSTidy_Optimise( $this );
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$this->tokens_list = &$this->data['csstidy']['tokens'];
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}
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/**
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* Gets the value of a setting.
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*
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* @since 1.0.0
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*
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* @param string $setting Setting to get.
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* @return string|int|bool Value of the setting.
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*/
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public function get_cfg( string $setting ) /* : string|int|bool */ {
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if ( isset( $this->settings[ $setting ] ) ) {
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return $this->settings[ $setting ];
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}
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return false;
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}
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/**
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* Sets the value of a setting.
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*
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* @since 1.0.0
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*
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* @param string $setting Setting.
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* @param string|int|bool|null $value Optional. Value of the setting.
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* @return bool Whether the setting was set.
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*/
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public function set_cfg( string $setting, $value = null ): bool {
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if ( isset( $this->settings[ $setting ] ) && '' !== $value ) {
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$this->settings[ $setting ] = $value;
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if ( 'template' === $setting ) {
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$this->load_template( $this->settings['template'] );
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}
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return true;
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}
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return false;
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}
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/**
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* Adds a token to $this->tokens.
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*
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* @since 1.0.0
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*
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* @param mixed $type Type.
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* @param string $data Data.
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* @param bool $force Optional. Add a token even if preserve_css is off.
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*/
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public function _add_token( $type, string $data, bool $force = false ): void {
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if ( $this->get_cfg( 'preserve_css' ) || $force ) {
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// nested @...: if opening a new part we just closed, remove the previous closing instead of adding opening.
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if ( self::AT_START === $type
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&& count( $this->tokens )
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&& ( $last = end( $this->tokens ) ) // phpcs:ignore Generic.CodeAnalysis.AssignmentInCondition.Found,Squiz.PHP.DisallowMultipleAssignments.FoundInControlStructure
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&& self::AT_END === $last[0]
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&& trim( $data ) === $last[1] ) {
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array_pop( $this->tokens );
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} else {
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$this->tokens[] = array( $type, ( self::COMMENT === $type || self::IMPORTANT_COMMENT === $type ) ? $data : trim( $data ) );
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}
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}
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}
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/**
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* Adds a message to the message log.
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*
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* @since 1.0.0
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*
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* @param string $message Message.
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* @param string $type Type.
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* @param int $line Optional. Line number. -1 will use the current line.
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*/
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public function log( string $message, string $type, int $line = -1 ): void {
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if ( -1 === $line ) {
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$line = $this->line;
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}
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$line = (int) $line;
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$add = array(
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'm' => $message,
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't' => $type,
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);
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if ( ! isset( $this->log[ $line ] ) || ! in_array( $add, $this->log[ $line ], true ) ) {
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$this->log[ $line ][] = $add;
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}
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}
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/**
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* Parses Unicode notations and find a replacement character.
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*
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* @since 1.0.0
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*
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* @param string $a_string String.
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* @param int $i i.
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* @return string [return value]
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*/
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public function _unicode( string &$a_string, int &$i ): string {
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++$i;
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$add = '';
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$replaced = false;
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while ( $i < strlen( $a_string ) && ( ctype_xdigit( $a_string[ $i ] ) || ctype_space( $a_string[ $i ] ) ) && strlen( $add ) < 6 ) { // phpcs:ignore Squiz.PHP.DisallowSizeFunctionsInLoops.Found
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$add .= $a_string[ $i ];
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if ( ctype_space( $a_string[ $i ] ) ) {
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break;
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}
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++$i;
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}
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if ( hexdec( $add ) > 47 && hexdec( $add ) < 58 || hexdec( $add ) > 64 && hexdec( $add ) < 91 || hexdec( $add ) > 96 && hexdec( $add ) < 123 ) {
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$this->log( 'Replaced unicode notation: Changed \\' . $add . ' to ' . chr( hexdec( $add ) ), 'Information' );
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$add = chr( hexdec( $add ) );
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$replaced = true;
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} else {
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$add = trim( '\\' . $add );
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}
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if ( @ctype_xdigit( $a_string[ $i + 1 ] ) && ctype_space( $a_string[ $i ] ) && ! $replaced || ! ctype_space( $a_string[ $i ] ) ) { // phpcs:ignore WordPress.PHP.NoSilencedErrors.Discouraged
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--$i;
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}
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if ( '\\' !== $add || ! $this->get_cfg( 'remove_bslash' ) || str_contains( $this->tokens_list, $a_string[ $i + 1 ] ) ) {
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return $add;
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}
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if ( '\\' === $add ) {
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$this->log( 'Removed unnecessary backslash', 'Information' );
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}
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return '';
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}
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/**
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* Writes formatted output to a file.
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*
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* @since 1.0.0
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*
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* @param string $filename File name.
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*/
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public function write_page( string $filename ): void {
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$this->write( $filename, true );
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}
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/**
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* Writes plain output to a file.
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*
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* @since 1.0.0
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*
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* @param string $filename File name.
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* @param bool $formatted Optional. Whether to print formatted or not.
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* @param string $doctype Optional. When printing formatted, is a shorthand for the document type.
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* @param bool $externalcss Optional. When printing formatted, indicates whether styles to be attached internally or as an external stylesheet.
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* @param string $title Optional. When printing formatted, is the title to be added in the head of the document.
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* @param string $lang Optional. When printing formatted, gives a two-letter language code to be added to the output.
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*/
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public function write( string $filename, bool $formatted = false, string $doctype = 'xhtml1.1', bool $externalcss = true, string $title = '', string $lang = 'en' ): void {
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$filename .= ( $formatted ) ? '.xhtml' : '.css';
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if ( ! is_dir( 'temp' ) ) {
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$madedir = mkdir( 'temp' );
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if ( ! $madedir ) {
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print 'Could not make directory "temp" in ' . __DIR__;
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exit;
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}
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}
|
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$handle = fopen( 'temp/' . $filename, 'w' );
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if ( $handle ) {
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if ( ! $formatted ) {
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fwrite( $handle, $this->print->plain() );
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} else {
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fwrite( $handle, $this->print->formatted_page( $doctype, $externalcss, $title, $lang ) );
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}
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}
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fclose( $handle );
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}
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|
|
/**
|
|
* Loads a new template.
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|
*
|
|
* @since 1.0.0
|
|
*
|
|
* @link https://csstidy.sourceforge.net/templates.php
|
|
*
|
|
* @param string $content Either file name (if $from_file is true), content of a template file, "default", "low", high", or "highest".
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* @param bool $from_file Optional. Uses $content as filename if true.
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*/
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protected function load_template( string $content, bool $from_file = true ): void {
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if ( in_array( $content, array( 'default', 'low', 'high', 'highest' ), true ) ) {
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$this->template = $this->data['csstidy']['predefined_templates'][ $content ];
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return;
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}
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if ( $from_file ) {
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$content = strip_tags( file_get_contents( $content ), '<span>' );
|
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}
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|
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// Unify newlines (because the output also only uses \n).
|
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$content = str_replace( "\r\n", "\n", $content );
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$this->template = explode( '|', $content );
|
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}
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|
|
/**
|
|
* Starts parsing from URL.
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|
*
|
|
* @since 1.0.0
|
|
*
|
|
* @param string $url URL.
|
|
* @return bool Whether the CSS code could be parsed successfully.
|
|
*/
|
|
protected function parse_from_url( string $url ): bool {
|
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$data = file_get_contents( $url );
|
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if ( false === $data ) {
|
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return false;
|
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}
|
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return $this->parse( $data );
|
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}
|
|
|
|
/**
|
|
* Checks if there is a token at the current position.
|
|
*
|
|
* @since 1.0.0
|
|
*
|
|
* @param string $a_string String.
|
|
* @param int $i i.
|
|
* @return bool [return value]
|
|
*/
|
|
protected function is_token( string &$a_string, int $i ): bool {
|
|
return ( str_contains( $this->tokens_list, $a_string[ $i ] ) && ! $this->escaped( $a_string, $i ) );
|
|
}
|
|
|
|
/**
|
|
* Parses CSS in a string. The output is saved as an array in $this->css.
|
|
*
|
|
* @since 1.0.0
|
|
*
|
|
* @param string $a_string The CSS code.
|
|
* @return bool Whether the CSS code could be parsed successfully.
|
|
*/
|
|
public function parse( string $a_string ): bool {
|
|
// Temporarily set locale to en_US in order to handle floats properly.
|
|
$old = @setlocale( LC_ALL, 0 ); // phpcs:ignore WordPress.PHP.NoSilencedErrors.Discouraged
|
|
@setlocale( LC_ALL, 'C' ); // phpcs:ignore WordPress.PHP.NoSilencedErrors.Discouraged
|
|
|
|
$at_rules = &$this->data['csstidy']['at_rules'];
|
|
$quoted_string_properties = &$this->data['csstidy']['quoted_string_properties'];
|
|
|
|
$this->css = array();
|
|
$this->print->input_css = $a_string;
|
|
$a_string = str_replace( "\r\n", "\n", $a_string ) . ' ';
|
|
$cur_comment = '';
|
|
$cur_at = '';
|
|
|
|
for ( $i = 0, $size = strlen( $a_string ); $i < $size; $i++ ) {
|
|
if ( "\n" === $a_string[ $i ] || "\r" === $a_string[ $i ] ) {
|
|
++$this->line;
|
|
}
|
|
|
|
switch ( $this->status ) {
|
|
/* Case in at-block */
|
|
case 'at':
|
|
if ( $this->is_token( $a_string, $i ) ) {
|
|
if ( '/' === $a_string[ $i ] && '*' === @$a_string[ $i + 1 ] ) { // phpcs:ignore WordPress.PHP.NoSilencedErrors.Discouraged
|
|
$this->status = 'ic';
|
|
++$i;
|
|
$this->from[] = 'at';
|
|
} elseif ( '{' === $a_string[ $i ] ) {
|
|
$this->status = 'is';
|
|
$this->at = $this->css_new_media_section( $this->at, $cur_at );
|
|
$this->_add_token( self::AT_START, $this->at );
|
|
} elseif ( ',' === $a_string[ $i ] ) {
|
|
$cur_at = trim( $cur_at ) . ',';
|
|
} elseif ( '\\' === $a_string[ $i ] ) {
|
|
$cur_at .= $this->_unicode( $a_string, $i );
|
|
} elseif ( in_array( $a_string[ $i ], array( '(', ')', ':', '.', '/' ), true ) ) {
|
|
// Fix for complicated media, i.e @media screen and (-webkit-min-device-pixel-ratio:1.5).
|
|
// '/' is included for ratios in Opera: (-o-min-device-pixel-ratio: 3/2).
|
|
$cur_at .= $a_string[ $i ];
|
|
}
|
|
} else {
|
|
$lastpos = strlen( $cur_at ) - 1;
|
|
if ( ! ( ( ctype_space( $cur_at[ $lastpos ] ) || $this->is_token( $cur_at, $lastpos ) && ',' === $cur_at[ $lastpos ] ) && ctype_space( $a_string[ $i ] ) ) ) {
|
|
$cur_at .= $a_string[ $i ];
|
|
}
|
|
}
|
|
break;
|
|
/* Case in-selector */
|
|
case 'is':
|
|
if ( $this->is_token( $a_string, $i ) ) {
|
|
if ( '/' === $a_string[ $i ] && '*' === @$a_string[ $i + 1 ] && '' === trim( $this->selector ) ) { // phpcs:ignore WordPress.PHP.NoSilencedErrors.Discouraged
|
|
$this->status = 'ic';
|
|
++$i;
|
|
$this->from[] = 'is';
|
|
} elseif ( '@' === $a_string[ $i ] && '' === trim( $this->selector ) ) { // phpcs:ignore WordPress.PHP.NoSilencedErrors.Discouraged
|
|
// Check for at-rule.
|
|
$this->invalid_at = true;
|
|
foreach ( $at_rules as $name => $type ) {
|
|
if ( ! strcasecmp( substr( $a_string, $i + 1, strlen( $name ) ), $name ) ) {
|
|
if ( 'at' === $type ) {
|
|
$cur_at = '@' . $name;
|
|
} else {
|
|
$this->selector = '@' . $name;
|
|
}
|
|
if ( 'atis' === $type ) {
|
|
$this->next_selector_at = ( $this->next_selector_at ? $this->next_selector_at : ( $this->at ? $this->at : self::DEFAULT_AT ) );
|
|
$this->at = $this->css_new_media_section( $this->at, ' ', true );
|
|
$type = 'is';
|
|
}
|
|
$this->status = $type;
|
|
$i += strlen( $name );
|
|
$this->invalid_at = false;
|
|
break;
|
|
}
|
|
}
|
|
|
|
if ( $this->invalid_at ) {
|
|
$this->selector = '@';
|
|
$invalid_at_name = '';
|
|
for ( $j = $i + 1; $j < $size; ++$j ) {
|
|
if ( ! ctype_alpha( $a_string[ $j ] ) ) {
|
|
break;
|
|
}
|
|
$invalid_at_name .= $a_string[ $j ];
|
|
}
|
|
$this->log( 'Invalid @-rule: ' . $invalid_at_name . ' (removed)', 'Warning' );
|
|
}
|
|
} elseif ( ( '"' === $a_string[ $i ] || "'" === $a_string[ $i ] ) ) {
|
|
$this->cur_string[] = $a_string[ $i ];
|
|
$this->status = 'instr';
|
|
$this->str_char[] = $a_string[ $i ];
|
|
$this->from[] = 'is';
|
|
/* Fixing CSS3 attribute selectors, i.e. a[href$=".mp3" */
|
|
$this->quoted_string[] = ( '=' === $a_string[ $i - 1 ] );
|
|
} elseif ( $this->invalid_at && ';' === $a_string[ $i ] ) {
|
|
$this->invalid_at = false;
|
|
$this->status = 'is';
|
|
if ( $this->next_selector_at ) {
|
|
$this->at = $this->css_close_media_section( $this->at );
|
|
$this->at = $this->css_new_media_section( $this->at, $this->next_selector_at );
|
|
$this->next_selector_at = '';
|
|
}
|
|
} elseif ( '{' === $a_string[ $i ] ) {
|
|
$this->status = 'ip';
|
|
if ( '' === $this->at ) {
|
|
$this->at = $this->css_new_media_section( $this->at, self::DEFAULT_AT );
|
|
}
|
|
$this->selector = $this->css_new_selector( $this->at, $this->selector );
|
|
$this->_add_token( self::SEL_START, $this->selector );
|
|
$this->added = false;
|
|
} elseif ( '}' === $a_string[ $i ] ) {
|
|
$this->_add_token( self::AT_END, $this->at );
|
|
$this->at = $this->css_close_media_section( $this->at );
|
|
$this->selector = '';
|
|
$this->sel_separate = array();
|
|
} elseif ( ',' === $a_string[ $i ] ) {
|
|
$this->selector = trim( $this->selector ) . ',';
|
|
$this->sel_separate[] = strlen( $this->selector );
|
|
} elseif ( '\\' === $a_string[ $i ] ) {
|
|
$this->selector .= $this->_unicode( $a_string, $i );
|
|
} elseif ( '*' === $a_string[ $i ] && @in_array( $a_string[ $i + 1 ], array( '.', '#', '[', ':' ), true ) && ( 0 === $i || '/' !== $a_string[ $i - 1 ] ) ) { // phpcs:ignore WordPress.PHP.NoSilencedErrors.Discouraged,Generic.CodeAnalysis.EmptyStatement.DetectedElseif
|
|
// Remove unnecessary universal selector, FS#147, but not comment in selector.
|
|
} else {
|
|
$this->selector .= $a_string[ $i ];
|
|
}
|
|
} else {
|
|
$lastpos = strlen( $this->selector ) - 1;
|
|
if ( -1 === $lastpos || ! ( ( ctype_space( $this->selector[ $lastpos ] ) || $this->is_token( $this->selector, $lastpos ) && ',' === $this->selector[ $lastpos ] ) && ctype_space( $a_string[ $i ] ) ) ) {
|
|
$this->selector .= $a_string[ $i ];
|
|
}
|
|
}
|
|
break;
|
|
/* Case in-property */
|
|
case 'ip':
|
|
if ( $this->is_token( $a_string, $i ) ) {
|
|
if ( ( ':' === $a_string[ $i ] || '=' === $a_string[ $i ] ) && '' !== $this->property ) {
|
|
$this->status = 'iv';
|
|
if ( ! $this->get_cfg( 'discard_invalid_properties' ) || $this->property_is_valid( $this->property ) ) {
|
|
$this->property = $this->css_new_property( $this->at, $this->selector, $this->property );
|
|
$this->property = strtolower( $this->property );
|
|
$this->_add_token( self::PROPERTY, $this->property );
|
|
}
|
|
} elseif ( '/' === $a_string[ $i ] && '*' === @$a_string[ $i + 1 ] && '' === $this->property ) { // phpcs:ignore WordPress.PHP.NoSilencedErrors.Discouraged
|
|
$this->status = 'ic';
|
|
++$i;
|
|
$this->from[] = 'ip';
|
|
} elseif ( '}' === $a_string[ $i ] ) {
|
|
$this->explode_selectors();
|
|
$this->status = 'is';
|
|
$this->invalid_at = false;
|
|
$this->_add_token( self::SEL_END, $this->selector );
|
|
$this->selector = '';
|
|
$this->property = '';
|
|
if ( $this->next_selector_at ) {
|
|
$this->at = $this->css_close_media_section( $this->at );
|
|
$this->at = $this->css_new_media_section( $this->at, $this->next_selector_at );
|
|
$this->next_selector_at = '';
|
|
}
|
|
} elseif ( ';' === $a_string[ $i ] ) {
|
|
$this->property = '';
|
|
} elseif ( '\\' === $a_string[ $i ] ) {
|
|
$this->property .= $this->_unicode( $a_string, $i );
|
|
} elseif ( ( '' === $this->property && ! ctype_space( $a_string[ $i ] ) ) || ( '/' === $this->property || '/' === $a_string[ $i ] ) ) {
|
|
// else this is dumb IE a hack, keep it.
|
|
// including /.
|
|
$this->property .= $a_string[ $i ];
|
|
}
|
|
} elseif ( ! ctype_space( $a_string[ $i ] ) ) {
|
|
$this->property .= $a_string[ $i ];
|
|
}
|
|
break;
|
|
/* Case in-value */
|
|
case 'iv':
|
|
$pn = ( ( "\n" === $a_string[ $i ] || "\r" === $a_string[ $i ] ) && $this->property_is_next( $a_string, $i + 1 ) || ( strlen( $a_string ) - 1 ) === $i );
|
|
if ( ( $this->is_token( $a_string, $i ) || $pn ) && ( ! ( ',' === $a_string[ $i ] && ! ctype_space( $a_string[ $i + 1 ] ) ) ) ) {
|
|
if ( '/' === $a_string[ $i ] && '*' === @$a_string[ $i + 1 ] ) { // phpcs:ignore WordPress.PHP.NoSilencedErrors.Discouraged
|
|
$this->status = 'ic';
|
|
++$i;
|
|
$this->from[] = 'iv';
|
|
} elseif ( ( '"' === $a_string[ $i ] || "'" === $a_string[ $i ] || '(' === $a_string[ $i ] ) ) {
|
|
$this->cur_string[] = $a_string[ $i ];
|
|
$this->str_char[] = ( '(' === $a_string[ $i ] ) ? ')' : $a_string[ $i ];
|
|
$this->status = 'instr';
|
|
$this->from[] = 'iv';
|
|
$this->quoted_string[] = in_array( strtolower( $this->property ), $quoted_string_properties, true );
|
|
} elseif ( ',' === $a_string[ $i ] ) {
|
|
$this->sub_value = trim( $this->sub_value ) . ',';
|
|
} elseif ( '\\' === $a_string[ $i ] ) {
|
|
$this->sub_value .= $this->_unicode( $a_string, $i );
|
|
} elseif ( ';' === $a_string[ $i ] || $pn ) {
|
|
if ( '@' === $this->selector[0] && isset( $at_rules[ substr( $this->selector, 1 ) ] ) && 'iv' === $at_rules[ substr( $this->selector, 1 ) ] ) {
|
|
$this->status = 'is';
|
|
|
|
switch ( $this->selector ) {
|
|
case '@charset':
|
|
// Add quotes to charset.
|
|
$this->sub_value_arr[] = '"' . trim( $this->sub_value ) . '"';
|
|
$this->charset = $this->sub_value_arr[0];
|
|
break;
|
|
case '@namespace':
|
|
// Add quotes to namespace.
|
|
$this->sub_value_arr[] = '"' . trim( $this->sub_value ) . '"';
|
|
$this->namespace = implode( ' ', $this->sub_value_arr );
|
|
break;
|
|
case '@import':
|
|
$this->sub_value = trim( $this->sub_value );
|
|
|
|
if ( empty( $this->sub_value_arr ) ) {
|
|
// Quote URLs in imports only if they're not already inside url() and not already quoted.
|
|
if ( ! str_starts_with( $this->sub_value, 'url(' ) ) {
|
|
if ( ! str_ends_with( $this->sub_value, $this->sub_value[0] ) && in_array( $this->sub_value[0], array( "'", '"' ), true ) ) {
|
|
$this->sub_value = '"' . $this->sub_value . '"';
|
|
}
|
|
}
|
|
}
|
|
|
|
$this->sub_value_arr[] = $this->sub_value;
|
|
$this->import[] = implode( ' ', $this->sub_value_arr );
|
|
break;
|
|
}
|
|
|
|
$this->sub_value_arr = array();
|
|
$this->sub_value = '';
|
|
$this->selector = '';
|
|
$this->sel_separate = array();
|
|
} else {
|
|
$this->status = 'ip';
|
|
}
|
|
} elseif ( '}' !== $a_string[ $i ] ) {
|
|
$this->sub_value .= $a_string[ $i ];
|
|
}
|
|
if ( ( '}' === $a_string[ $i ] || ';' === $a_string[ $i ] || $pn ) && ! empty( $this->selector ) ) {
|
|
if ( '' === $this->at ) {
|
|
$this->at = $this->css_new_media_section( $this->at, self::DEFAULT_AT );
|
|
}
|
|
|
|
// Case settings.
|
|
if ( $this->get_cfg( 'lowercase_s' ) ) {
|
|
$this->selector = strtolower( $this->selector );
|
|
}
|
|
$this->property = strtolower( $this->property );
|
|
|
|
$this->optimise->subvalue();
|
|
if ( '' !== $this->sub_value ) {
|
|
$this->sub_value_arr[] = $this->sub_value;
|
|
$this->sub_value = '';
|
|
}
|
|
|
|
$this->value = '';
|
|
while ( count( $this->sub_value_arr ) ) { // phpcs:ignore Squiz.PHP.DisallowSizeFunctionsInLoops.Found
|
|
$sub = array_shift( $this->sub_value_arr );
|
|
if ( strstr( $this->selector, 'font-face' ) ) {
|
|
$sub = $this->quote_font_format( $sub );
|
|
}
|
|
|
|
if ( '' !== $sub ) {
|
|
if ( strlen( $this->value ) && ( ! str_ends_with( $this->value, ',' ) || $this->get_cfg( 'preserve_css' ) ) ) {
|
|
$this->value .= ' ';
|
|
}
|
|
$this->value .= $sub;
|
|
}
|
|
}
|
|
|
|
$this->optimise->value();
|
|
|
|
$valid = $this->property_is_valid( $this->property );
|
|
if ( ( ! $this->invalid_at || $this->get_cfg( 'preserve_css' ) ) && ( ! $this->get_cfg( 'discard_invalid_properties' ) || $valid ) ) {
|
|
$this->css_add_property( $this->at, $this->selector, $this->property, $this->value );
|
|
$this->_add_token( self::VALUE, $this->value );
|
|
$this->optimise->shorthands();
|
|
}
|
|
if ( ! $valid ) {
|
|
if ( $this->get_cfg( 'discard_invalid_properties' ) ) {
|
|
$this->log( 'Removed invalid property: ' . $this->property, 'Warning' );
|
|
} else {
|
|
$this->log( 'Invalid property in ' . strtoupper( $this->get_cfg( 'css_level' ) ) . ': ' . $this->property, 'Warning' );
|
|
}
|
|
}
|
|
|
|
$this->property = '';
|
|
$this->sub_value_arr = array();
|
|
$this->value = '';
|
|
}
|
|
if ( '}' === $a_string[ $i ] ) {
|
|
$this->explode_selectors();
|
|
$this->_add_token( self::SEL_END, $this->selector );
|
|
$this->status = 'is';
|
|
$this->invalid_at = false;
|
|
$this->selector = '';
|
|
if ( $this->next_selector_at ) {
|
|
$this->at = $this->css_close_media_section( $this->at );
|
|
$this->at = $this->css_new_media_section( $this->at, $this->next_selector_at );
|
|
$this->next_selector_at = '';
|
|
}
|
|
}
|
|
} elseif ( ! $pn ) {
|
|
$this->sub_value .= $a_string[ $i ];
|
|
|
|
if ( ctype_space( $a_string[ $i ] ) || ',' === $a_string[ $i ] ) {
|
|
$this->optimise->subvalue();
|
|
if ( '' !== $this->sub_value ) {
|
|
$this->sub_value_arr[] = $this->sub_value;
|
|
$this->sub_value = '';
|
|
}
|
|
}
|
|
}
|
|
break;
|
|
/* Case in string */
|
|
case 'instr':
|
|
$_str_char = $this->str_char[ count( $this->str_char ) - 1 ];
|
|
$_cur_string = $this->cur_string[ count( $this->cur_string ) - 1 ];
|
|
$_quoted_string = $this->quoted_string[ count( $this->quoted_string ) - 1 ];
|
|
$temp_add = $a_string[ $i ];
|
|
|
|
// Add another string to the stack. Strings can't be nested inside of quotes, only parentheses,
|
|
// but parentheticals can be nested more than once.
|
|
if ( ')' === $_str_char && ( '(' === $a_string[ $i ] || '"' === $a_string[ $i ] || '\\' === $a_string[ $i ] ) && ! $this->escaped( $a_string, $i ) ) {
|
|
$this->cur_string[] = $a_string[ $i ];
|
|
$this->str_char[] = ( '(' === $a_string[ $i ] ) ? ')' : $a_string[ $i ];
|
|
$this->from[] = 'instr';
|
|
$this->quoted_string[] = ( ')' === $_str_char && '(' !== $a_string[ $i ] && '(' === trim( $_cur_string ) ) ? $_quoted_string : ( '(' !== $a_string[ $i ] );
|
|
continue 2;
|
|
}
|
|
|
|
if ( ')' !== $_str_char && ( "\n" === $a_string[ $i ] || "\r" === $a_string[ $i ] ) && ! ( '\\' === $a_string[ $i - 1 ] && ! $this->escaped( $a_string, $i - 1 ) ) ) {
|
|
$temp_add = '\\A';
|
|
$this->log( 'Fixed incorrect newline in string', 'Warning' );
|
|
}
|
|
|
|
$_cur_string .= $temp_add;
|
|
|
|
if ( $a_string[ $i ] === $_str_char && ! $this->escaped( $a_string, $i ) ) {
|
|
$this->status = array_pop( $this->from );
|
|
|
|
if ( ! preg_match( '|[' . implode( '', $this->data['csstidy']['whitespace'] ) . ']|uis', $_cur_string ) && 'content' !== $this->property ) {
|
|
if ( ! $_quoted_string ) {
|
|
if ( ')' !== $_str_char ) {
|
|
/*
|
|
* Convert properties like
|
|
* font-family: 'Arial';
|
|
* to
|
|
* font-family: Arial;
|
|
* or
|
|
* url("abc")
|
|
* to
|
|
* url(abc)
|
|
*/
|
|
$_cur_string = substr( $_cur_string, 1, -1 );
|
|
}
|
|
} else {
|
|
$_quoted_string = false;
|
|
}
|
|
}
|
|
|
|
array_pop( $this->cur_string );
|
|
array_pop( $this->quoted_string );
|
|
array_pop( $this->str_char );
|
|
|
|
if ( ')' === $_str_char ) {
|
|
$_cur_string = '(' . trim( substr( $_cur_string, 1, -1 ) ) . ')';
|
|
}
|
|
|
|
if ( 'iv' === $this->status ) {
|
|
if ( ! $_quoted_string ) {
|
|
if ( str_contains( $_cur_string, ',' ) ) {
|
|
// We can on only remove space next to ','.
|
|
$_cur_string = implode( ',', array_map( 'trim', explode( ',', $_cur_string ) ) );
|
|
}
|
|
// and multiple spaces (too expensive).
|
|
if ( str_contains( $_cur_string, ' ' ) ) {
|
|
$_cur_string = preg_replace( ',\s+,', ' ', $_cur_string );
|
|
}
|
|
}
|
|
$this->sub_value .= $_cur_string;
|
|
} elseif ( 'is' === $this->status ) {
|
|
$this->selector .= $_cur_string;
|
|
} elseif ( 'instr' === $this->status ) {
|
|
$this->cur_string[ count( $this->cur_string ) - 1 ] .= $_cur_string;
|
|
}
|
|
} else {
|
|
$this->cur_string[ count( $this->cur_string ) - 1 ] = $_cur_string;
|
|
}
|
|
break;
|
|
/* Case in-comment */
|
|
case 'ic':
|
|
if ( '*' === $a_string[ $i ] && '/' === $a_string[ $i + 1 ] ) {
|
|
$this->status = array_pop( $this->from );
|
|
++$i;
|
|
if ( strlen( $cur_comment ) > 1 && str_starts_with( $cur_comment, '!' ) ) {
|
|
$this->_add_token( self::IMPORTANT_COMMENT, $cur_comment );
|
|
$this->css_add_important_comment( $cur_comment );
|
|
} else {
|
|
$this->_add_token( self::COMMENT, $cur_comment );
|
|
}
|
|
$cur_comment = '';
|
|
} else {
|
|
$cur_comment .= $a_string[ $i ];
|
|
}
|
|
break;
|
|
}
|
|
}
|
|
|
|
$this->optimise->postparse();
|
|
$this->print->_reset();
|
|
|
|
// Set locale back to original setting.
|
|
@setlocale( LC_ALL, $old ); // phpcs:ignore WordPress.PHP.NoSilencedErrors.Discouraged
|
|
|
|
return ! ( empty( $this->css ) && empty( $this->import ) && empty( $this->charset ) && empty( $this->tokens ) && empty( $this->namespace ) );
|
|
}
|
|
|
|
/**
|
|
* Quoting: format() in font-face needs quoted values for some browser (FF at least).
|
|
*
|
|
* @since 1.0.0
|
|
*
|
|
* @param string $value Value.
|
|
* @return string String.
|
|
*/
|
|
protected function quote_font_format( string $value ): string {
|
|
if ( str_starts_with( $value, 'format' ) ) {
|
|
$p = strpos( $value, ')', 7 );
|
|
$end = substr( $value, $p );
|
|
$format_strings = $this->parse_string_list( substr( $value, 7, $p - 7 ) );
|
|
if ( ! $format_strings ) {
|
|
$value = '';
|
|
} else {
|
|
$value = 'format(';
|
|
foreach ( $format_strings as $format_string ) {
|
|
$value .= '"' . str_replace( '"', '\\"', $format_string ) . '",';
|
|
}
|
|
$value = substr( $value, 0, -1 ) . $end;
|
|
}
|
|
}
|
|
return $value;
|
|
}
|
|
|
|
/**
|
|
* Explodes selectors.
|
|
*
|
|
* @since 1.0.0
|
|
*/
|
|
protected function explode_selectors(): void {
|
|
// Explode multiple selectors.
|
|
if ( 1 === $this->get_cfg( 'merge_selectors' ) ) {
|
|
$new_sels = array();
|
|
$lastpos = 0;
|
|
$this->sel_separate[] = strlen( $this->selector );
|
|
foreach ( $this->sel_separate as $num => $pos ) {
|
|
if ( ( count( $this->sel_separate ) - 1 ) === $num ) {
|
|
++$pos;
|
|
}
|
|
|
|
$new_sels[] = substr( $this->selector, $lastpos, $pos - $lastpos - 1 );
|
|
$lastpos = $pos;
|
|
}
|
|
|
|
if ( count( $new_sels ) > 1 ) {
|
|
foreach ( $new_sels as $selector ) {
|
|
if ( isset( $this->css[ $this->at ][ $this->selector ] ) ) {
|
|
$this->merge_css_blocks( $this->at, $selector, $this->css[ $this->at ][ $this->selector ] );
|
|
}
|
|
}
|
|
unset( $this->css[ $this->at ][ $this->selector ] );
|
|
}
|
|
}
|
|
$this->sel_separate = array();
|
|
}
|
|
|
|
/**
|
|
* Checks if a character is escaped.
|
|
*
|
|
* @since 1.0.0
|
|
*
|
|
* @param string $a_string String.
|
|
* @param int $pos Position.
|
|
* @return bool Whether a character is escaped.
|
|
*/
|
|
public function escaped( string &$a_string, int $pos ): bool {
|
|
return $pos ? ! ( @( '\\' !== $a_string[ $pos - 1 ] ) || $this->escaped( $a_string, $pos - 1 ) ) : false; // phpcs:ignore WordPress.PHP.NoSilencedErrors.Discouraged
|
|
}
|
|
|
|
/**
|
|
* Adds an important comment to the CSS code (one we want to keep when minifying).
|
|
*
|
|
* @since 1.10.0
|
|
*
|
|
* @param string $comment CSS Comment.
|
|
*/
|
|
protected function css_add_important_comment( string $comment ): void {
|
|
if ( $this->get_cfg( 'preserve_css' ) || '' === trim( $comment ) ) {
|
|
return;
|
|
}
|
|
if ( ! isset( $this->css['!'] ) ) {
|
|
$this->css['!'] = '';
|
|
} else {
|
|
$this->css['!'] .= "\n";
|
|
}
|
|
$this->css['!'] .= $comment;
|
|
}
|
|
|
|
/**
|
|
* Adds a property with value to the existing CSS code.
|
|
*
|
|
* @since 1.0.0
|
|
*
|
|
* @param string $media Media.
|
|
* @param string $selector Selector.
|
|
* @param string $property Property.
|
|
* @param string $new_val New value.
|
|
*/
|
|
protected function css_add_property( string $media, string $selector, string $property, string $new_val ): void {
|
|
if ( $this->get_cfg( 'preserve_css' ) || '' === trim( $new_val ) ) {
|
|
return;
|
|
}
|
|
|
|
$this->added = true;
|
|
if ( isset( $this->css[ $media ][ $selector ][ $property ] ) ) {
|
|
if ( ( $this->is_important( $this->css[ $media ][ $selector ][ $property ] ) && $this->is_important( $new_val ) ) || ! $this->is_important( $this->css[ $media ][ $selector ][ $property ] ) ) {
|
|
$this->css[ $media ][ $selector ][ $property ] = trim( $new_val );
|
|
}
|
|
} else {
|
|
$this->css[ $media ][ $selector ][ $property ] = trim( $new_val );
|
|
}
|
|
}
|
|
|
|
/**
|
|
* Checks if a current media section is the continuation of the last one.
|
|
* If not increase the name of the media section to avoid a merging.
|
|
*
|
|
* @since 1.10.0
|
|
*
|
|
* @param int|string $media Media.
|
|
* @return int|string [return value]
|
|
*/
|
|
protected function css_check_last_media_section_or_inc( $media ) /* : int|string */ {
|
|
// Are we starting?
|
|
if ( empty( $this->css ) || ! is_array( $this->css ) ) {
|
|
return $media;
|
|
}
|
|
// If the last @media is the same as this, keep it.
|
|
$at = array_key_last( $this->css );
|
|
if ( $at === $media ) {
|
|
return $media;
|
|
}
|
|
// Otherwise increase the section in the array.
|
|
while ( isset( $this->css[ $media ] ) ) {
|
|
if ( is_numeric( $media ) ) {
|
|
++$media;
|
|
} else {
|
|
$media .= ' ';
|
|
}
|
|
}
|
|
return $media;
|
|
}
|
|
|
|
/**
|
|
* Starts a new media section.
|
|
*
|
|
* Check if the media is not already known, else rename it with extra spaces to avoid merging.
|
|
*
|
|
* @since 1.0.0
|
|
*
|
|
* @param string|int $current_media Media.
|
|
* @param string $new_media Media.
|
|
* @param bool $at_root Optional. Default false.
|
|
* @return int|string [return value]
|
|
*/
|
|
protected function css_new_media_section( $current_media, string $new_media, bool $at_root = false ) /* : int|string */ {
|
|
if ( $this->get_cfg( 'preserve_css' ) ) {
|
|
return $new_media;
|
|
}
|
|
// If we already are in a media and CSS level is 3, manage nested medias.
|
|
if ( $current_media
|
|
&& ! $at_root
|
|
// Numeric $current_media means self::DEFAULT_AT or inc.
|
|
&& ! is_numeric( $current_media )
|
|
&& str_starts_with( $this->get_cfg( 'css_level' ), 'CSS3' ) ) {
|
|
$new_media = rtrim( $current_media ) . '{' . rtrim( $new_media );
|
|
}
|
|
return $this->css_check_last_media_section_or_inc( $new_media );
|
|
}
|
|
|
|
/**
|
|
* Closes a media section.
|
|
*
|
|
* Finds the parent media we were in before or the root.
|
|
*
|
|
* @since 1.10.0
|
|
*
|
|
* @param string $current_media Current Media.
|
|
* @return string [return value]
|
|
*/
|
|
protected function css_close_media_section( string $current_media ): string {
|
|
if ( $this->get_cfg( 'preserve_css' ) ) {
|
|
return '';
|
|
}
|
|
if ( str_contains( $current_media, '{' ) ) {
|
|
$current_media = explode( '{', $current_media );
|
|
array_pop( $current_media );
|
|
$current_media = implode( '{', $current_media );
|
|
return $current_media;
|
|
}
|
|
|
|
return '';
|
|
}
|
|
|
|
/**
|
|
* Starts a new selector.
|
|
*
|
|
* If already referenced in this media section, rename it with extra space to avoid merging,
|
|
* except if merging is required, or last selector is the same (merge siblings).
|
|
* Never merge @font-face.
|
|
*
|
|
* @since 1.0.0
|
|
*
|
|
* @param string $media Media.
|
|
* @param string $selector Selector.
|
|
* @return string [return value]
|
|
*/
|
|
protected function css_new_selector( string $media, string $selector ): string {
|
|
if ( $this->get_cfg( 'preserve_css' ) ) {
|
|
return $selector;
|
|
}
|
|
$selector = trim( $selector );
|
|
if ( ! str_starts_with( $selector, '@font-face' ) ) {
|
|
if ( false !== $this->settings['merge_selectors'] ) {
|
|
return $selector;
|
|
}
|
|
|
|
if ( empty( $this->css ) || ! isset( $this->css[ $media ] ) || ! $this->css[ $media ] ) {
|
|
return $selector;
|
|
}
|
|
|
|
// If last is the same, keep it.
|
|
$sel = array_key_last( $this->css[ $media ] );
|
|
if ( $sel === $selector ) {
|
|
return $selector;
|
|
}
|
|
}
|
|
|
|
while ( isset( $this->css[ $media ][ $selector ] ) ) {
|
|
$selector .= ' ';
|
|
}
|
|
return $selector;
|
|
}
|
|
|
|
/**
|
|
* Starts a new property.
|
|
*
|
|
* If already referenced in this selector, rename it with extra space to avoid override.
|
|
*
|
|
* @since 1.0.0
|
|
*
|
|
* @param string $media Media.
|
|
* @param string $selector Selector.
|
|
* @param string $property Property.
|
|
* @return string [return value]
|
|
*/
|
|
protected function css_new_property( string $media, string $selector, string $property ): string {
|
|
if ( $this->get_cfg( 'preserve_css' ) ) {
|
|
return $property;
|
|
}
|
|
if ( empty( $this->css ) || ! isset( $this->css[ $media ][ $selector ] ) || ! $this->css[ $media ][ $selector ] ) {
|
|
return $property;
|
|
}
|
|
|
|
while ( isset( $this->css[ $media ][ $selector ][ $property ] ) ) {
|
|
$property .= ' ';
|
|
}
|
|
|
|
return $property;
|
|
}
|
|
|
|
/**
|
|
* Adds CSS to an existing media/selector.
|
|
*
|
|
* @since 1.0.0
|
|
*
|
|
* @param string $media Media.
|
|
* @param string $selector Selector.
|
|
* @param array<string, string> $css_add Additional CSS.
|
|
*/
|
|
public function merge_css_blocks( string $media, string $selector, array $css_add ): void {
|
|
foreach ( $css_add as $property => $value ) {
|
|
$this->css_add_property( $media, $selector, $property, $value );
|
|
}
|
|
}
|
|
|
|
/**
|
|
* Checks if $value is !important.
|
|
*
|
|
* @since 1.0.0
|
|
*
|
|
* @param string $value Value.
|
|
* @return bool Whether the value has the !important keyword.
|
|
*/
|
|
public function is_important( string &$value ): bool {
|
|
return (
|
|
str_contains( $value, '!' ) // Quick test.
|
|
&& ! strcasecmp( substr( str_replace( $this->data['csstidy']['whitespace'], '', $value ), -10, 10 ), '!important' ) );
|
|
}
|
|
|
|
/**
|
|
* Returns a value without !important.
|
|
*
|
|
* @since 1.0.0
|
|
*
|
|
* @param string $value Value.
|
|
* @return string Value without the !important;
|
|
*/
|
|
public function gvw_important( string $value ): string {
|
|
if ( $this->is_important( $value ) ) {
|
|
$value = trim( $value );
|
|
$value = substr( $value, 0, -9 );
|
|
$value = trim( $value );
|
|
$value = substr( $value, 0, -1 );
|
|
$value = trim( $value );
|
|
return $value;
|
|
}
|
|
return $value;
|
|
}
|
|
|
|
/**
|
|
* Checks if the next word in a string from pos is a CSS property.
|
|
*
|
|
* @since 1.0.0
|
|
*
|
|
* @param string $istring String.
|
|
* @param int $pos Position.
|
|
* @return bool [return value]
|
|
*/
|
|
protected function property_is_next( string $istring, int $pos ): bool {
|
|
$all_properties = &$this->data['csstidy']['all_properties'];
|
|
$istring = substr( $istring, $pos, strlen( $istring ) - $pos );
|
|
$pos = strpos( $istring, ':' );
|
|
if ( false === $pos ) {
|
|
return false;
|
|
}
|
|
$istring = strtolower( trim( substr( $istring, 0, $pos ) ) );
|
|
if ( isset( $all_properties[ $istring ] ) ) {
|
|
$this->log( 'Added semicolon to the end of declaration', 'Warning' );
|
|
return true;
|
|
}
|
|
return false;
|
|
}
|
|
|
|
/**
|
|
* Checks if a property is valid.
|
|
*
|
|
* @since 1.0.0
|
|
*
|
|
* @param string $property Property.
|
|
* @return bool Whether the property is valid.
|
|
*/
|
|
public function property_is_valid( string $property ): bool {
|
|
$property = strtolower( $property );
|
|
if ( str_starts_with( $property, '--' ) ) {
|
|
$property = '--custom'; // Replace custom properties with a temporary placeholder that is marked as valid in the list of properties.
|
|
} elseif ( in_array( trim( $property ), $this->data['csstidy']['multiple_properties'], true ) ) {
|
|
$property = trim( $property );
|
|
}
|
|
$all_properties = &$this->data['csstidy']['all_properties'];
|
|
return isset( $all_properties[ $property ] ) && str_contains( $all_properties[ $property ], strtoupper( $this->get_cfg( 'css_level' ) ) );
|
|
}
|
|
|
|
/**
|
|
* Accepts a list of strings (e.g. the argument to format() in a @font-face src property)
|
|
* and returns a list of the strings. Converts things like:
|
|
* format(abc) => format("abc")
|
|
* format(abc def) => format("abc","def")
|
|
* format(abc "def") => format("abc","def")
|
|
* format(abc, def, ghi) => format("abc","def","ghi")
|
|
* format("abc",'def') => format("abc","def")
|
|
* format("abc, def, ghi") => format("abc, def, ghi")
|
|
*
|
|
* @since 1.0.0
|
|
*
|
|
* @param string $value [description].
|
|
* @return string[] [description]
|
|
*/
|
|
public function parse_string_list( string $value ): array {
|
|
$value = trim( $value );
|
|
|
|
// Case: empty.
|
|
if ( ! $value ) {
|
|
return array();
|
|
}
|
|
|
|
$a_strings = array();
|
|
|
|
$in_str = false;
|
|
$current_string = '';
|
|
|
|
for ( $i = 0, $_len = strlen( $value ); $i < $_len; $i++ ) {
|
|
if ( ( ',' === $value[ $i ] || ' ' === $value[ $i ] ) && true === $in_str ) {
|
|
$in_str = false;
|
|
$a_strings[] = $current_string;
|
|
$current_string = '';
|
|
} elseif ( '"' === $value[ $i ] || "'" === $value[ $i ] ) {
|
|
if ( $in_str === $value[ $i ] ) {
|
|
$a_strings[] = $current_string;
|
|
$in_str = false;
|
|
$current_string = '';
|
|
continue;
|
|
} elseif ( ! $in_str ) {
|
|
$in_str = $value[ $i ];
|
|
}
|
|
} else { // phpcs:ignore Universal.ControlStructures.DisallowLonelyIf.Found
|
|
if ( $in_str ) {
|
|
$current_string .= $value[ $i ];
|
|
} else { // phpcs:ignore Universal.ControlStructures.DisallowLonelyIf.Found
|
|
if ( ! preg_match( '/[\s,]/', $value[ $i ] ) ) {
|
|
$in_str = true;
|
|
$current_string = $value[ $i ];
|
|
}
|
|
}
|
|
}
|
|
}
|
|
|
|
if ( $current_string ) {
|
|
$a_strings[] = $current_string;
|
|
}
|
|
|
|
return $a_strings;
|
|
}
|
|
|
|
} // class TablePress_CSSTidy
|