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<?php
/**
* CSS Generator
* Write css programatically using PHP.
*
* @author Luiz Bills <luizpbills@gmail.comm>
* @copyright 2018 Luiz Bills
* @license MIT
*/
namespace luizbills\CSS_Generator;
use MatthiasMullie\Minify;
class Generator {
const VERSION = '3.1.0';
protected $raw = '';
protected $block_level = 0;
protected $linebreak = "\n";
protected $minified = null; // for cache
protected $options = null;
protected $default_options = [
'indentation' => ' ', // 4 spaces
];
public function __construct ( $options = [] ) {
$this->options = array_merge( $this->default_options, $options );
}
public function get_output ( $compress = false ) {
$this->close_blocks();
if ( $compress ) {
return $this->minify();
}
return $this->raw;
}
protected function minify () {
if ( ! is_null( $this->minified ) ) {
return $this->minified;
}
$minifier = new Minify\CSS( $this->raw );
$this->minified = $minifier->minify();
return $this->minified;
}
public function add_raw ( $string ) {
$this->raw .= $string;
$this->clear_cache();
}
public function add_rule ( $selectors, $declarations_array ) {
$declarations = [];
$selector_indentation = str_repeat( $this->options['indentation'], $this->block_level );
$declaration_indentation = str_repeat( $this->options['indentation'], $this->block_level + 1 );
if ( ! is_array( $selectors ) ) {
$selectors = [ $selectors ];
}
foreach ( $selectors as $key => $value ) {
$selectors[ $key ] = $selector_indentation . trim( $value );
}
foreach ( $declarations_array as $key => $value ) {
$declarations[] = $declaration_indentation . trim( $key ) . ': ' . trim( $value ) . ';' . $this->linebreak;
}
$this->raw .= implode( ',' . $this->linebreak, $selectors ) . ' {';
$this->raw .= $this->linebreak . implode( '', $declarations );
$this->raw .= $selector_indentation . '}' . $this->linebreak;
$this->clear_cache();
}
public function open_block ( $type, $props = '' ) {
$block_indentation = str_repeat( $this->options['indentation'], $this->block_level );
$this->raw .= $block_indentation . '@' . $type . ' ' . trim( $props ) . ' {' . $this->linebreak;
$this->block_level++;
$this->clear_cache();
}
public function close_block () {
if ( $this->block_level > 0 ) {
$this->block_level--;
$block_indentation = str_repeat( $this->options['indentation'], $this->block_level );
$this->raw .= $block_indentation . '}' . $this->linebreak;
$this->clear_cache();
}
}
public function close_blocks () {
while ( $this->block_level > 0 ) {
$this->close_block();
}
}
protected function clear_cache() {
$this->minified = null;
}
}
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