/**
* Parses a css selector code and creates a new Selector object
*
* @param string $string The css code
* @return Stylecow\Selector
*/
public static function createFromString($string)
{
$string = trim($string);
if ($string[0] === '@') {
$pieces = Parser::explodeTrim(' ', $string, 2);
return new static($pieces[0], isset($pieces[1]) ? Parser::explodeTrim(',', $pieces[1]) : null);
}
return new static(null, Parser::explodeTrim(',', $string));
}
/**
* Apply the plugin to Css object
*
* @param Stylecow\Css $css The css object
*/
public static function apply(Css $css)
{
$css->executeRecursive(function ($code) {
while (strpos((string) $code->selector, ':matches(') !== false) {
foreach ($code->selector->get() as $key => $selector) {
if (preg_match('/:matches\\(([^\\)]*)\\)/', $selector, $match)) {
$code->selector->delete($key);
foreach (Parser::explodeTrim(',', $match[1]) as $matchSelector) {
$code->selector->add(str_replace($match[0], $matchSelector, $selector));
}
}
}
}
});
}
/**
* Search and replace the css variables with the real value
*
* @param string $value The property value where the variable is placed
* @param array $variables The defined variables
*/
public static function replaceVariables($value, array $variables)
{
if (strpos($value, '$') !== false) {
$value = preg_replace_callback('/\\$([\\w-]+)/', function ($matches) use($variables) {
return isset($variables[$matches[1]]) ? $variables[$matches[1]] : $matches[0];
}, $value);
}
$value = Parser::executeFunctions($value, 'var', function ($params) use($variables) {
if (!isset($params[0])) {
return 'var()';
}
if (isset($variables[$params[0]])) {
return $variables[$params[0]];
}
return isset($params[1]) ? $params[1] : 'var(' . $params[0] . ')';
});
return $value;
}
/**
* Apply the plugin to Css object
*
* @param Stylecow\Css $css The css object
*/
public static function apply(Css $css)
{
$css->executeRecursive(function ($code) {
foreach ($code->getProperties() as $property) {
$property->executeFunction('color', function ($parameters) {
$rgba = Color::toRGBA(array_shift($parameters));
foreach ($parameters as $operation) {
if (strpos($operation, ':') === false) {
if (preg_match('/^[0-9]+$/', $operation)) {
$function = 'tint';
$value = $operation;
} else {
continue;
}
} else {
list($function, $value) = Parser::explodeTrim(':', $operation, 2);
}
switch ($function) {
case 'hue':
case 'saturation':
case 'light':
$rgba = Color::HSLA_RGBA(Color::editChannel(Color::RGBA_HSLA($rgba), $function, $value));
break;
case 'red':
case 'green':
case 'blue':
case 'alpha':
$rgba = Color::editChannel($rgba, $function, $value);
break;
case 'tint':
$rgba = Color::editTint($rgba, $value);
break;
}
}
if ($rgba[3] < 1) {
return 'rgba(' . implode(', ', $rgba) . ')';
}
return '#' . Color::RGBA_HEX($rgba);
});
}
});
}
/**
* @param string $buffer
* @return string
*/
private function optimize($buffer)
{
$plugins = array('Color' => true, 'Grid' => true, 'IeBackgroundAlpha' => true, 'IeClip' => true, 'IeFloat' => true, 'IeInlineBlock' => true, 'IeLinearGradient' => true, 'IeMinHeight' => true, 'IeOpacity' => true, 'Initial' => true, 'Matches' => true, 'Math' => true, 'MediaQuery' => false, 'NestedRules' => false, 'Rem' => true, 'IeTransform' => true, 'Variables' => false, 'VendorPrefixes' => true, 'BaseUrl' => \App::get('home'));
$stylecow = \Stylecow\Parser::parseString($buffer);
$stylecow->applyPlugins($plugins);
return (string) $stylecow;
}
/**
* Generate the old webkit syntax for the linear-gradient
*
* @param Stylecow\Property $property The property object with the standard syntax
*/
public static function webkitLinearGradient(Property $property)
{
$newProperty = clone $property;
$newProperty->executeFunction('linear-gradient', function ($params) {
$point = 'top';
if (preg_match('/(top|bottom|left|right|deg)/', $params[0])) {
$point = array_shift($params);
}
switch ($point) {
case 'to bottom':
$start = 'left top';
$end = 'left bottom';
break;
case 'to top':
$start = 'left bottom';
$end = 'left top';
break;
case 'to right':
$start = 'left top';
$end = 'right top';
break;
case 'to left':
$start = 'right top';
$end = 'left top';
break;
default:
if (preg_match('/^\\ddeg$/', $point)) {
$radius = intval($point);
} else {
$start = 'left top';
$end = 'left bottom';
}
}
$color_stops = array();
$tk = count($params) - 1;
foreach ($params as $k => $param) {
$param = Parser::explode(' ', trim($param));
$color = $param[0];
$stop = isset($param[1]) ? $param[1] : null;
if ($k === 0) {
$text = 'from';
} else {
if ($k === $tk) {
$text = 'to';
} else {
$text = 'color-stop';
}
}
if ($stop) {
$color_stops[] = $text . '(' . $stop . ', ' . $color . ')';
} else {
$color_stops[] = $text . '(' . $color . ')';
}
}
if (isset($radius)) {
return '-webkit-gradient(linear, ' . $radius . 'deg, ' . implode(', ', $color_stops) . ')';
} else {
return '-webkit-gradient(linear, ' . $start . ', ' . $end . ', ' . implode(', ', $color_stops) . ')';
}
});
if ($property->value !== $newProperty->value) {
$newProperty->vendor = 'webkit';
$property->parent->addProperty($newProperty, $property->getPositionInParent());
}
}
/**
* Converts a color declaration in rgba format.
*
* @param string $colors The css color declaration
*
* @return array The rgba color values
*/
public static function resolveColor($colors)
{
$colors = Parser::explodeTrim(' ', $colors);
if (count($colors) === 1) {
return Color::toRGBA($colors[0]);
}
$sumColors = array(0, 0, 0, 0);
foreach ($colors as $k => $color) {
$color = Color::toRGBA($color);
$sumColors[0] += $color[0];
$sumColors[1] += $color[1];
$sumColors[2] += $color[2];
$sumColors[3] += $color[3];
}
$total = count($colors);
$sumColors[0] = round($sumColors[0] / $total);
$sumColors[1] = round($sumColors[1] / $total);
$sumColors[2] = round($sumColors[2] / $total);
$sumColors[3] = round($sumColors[3] / $total);
return $sumColors;
}
/**
* Get Stylecow\Css object from a string.
* @param string $cssString
* @param string $file
*
* @return Stylecow\Css
*/
protected function getCss($cssString, $file)
{
$css = Stylecow\Parser::parseString($cssString);
$this->checkCssImport($css, $file);
return $css;
}
<?php
include 'Stylecow/autoloader.php';
use Stylecow\Parser;
$plugins = array('Color' => array('checked' => false, 'options' => array()), 'Grid' => array('checked' => false, 'options' => array()), 'IeBackgroundAlpha' => array('checked' => false, 'options' => array()), 'IeClip' => array('checked' => false, 'options' => array()), 'IeFloat' => array('checked' => false, 'options' => array()), 'IeInlineBlock' => array('checked' => false, 'options' => array()), 'IeLinearGradient' => array('checked' => false, 'options' => array()), 'IeMinHeight' => array('checked' => false, 'options' => array()), 'IeOpacity' => array('checked' => false, 'options' => array()), 'Initial' => array('checked' => false, 'options' => array()), 'Matches' => array('checked' => true, 'options' => array()), 'Math' => array('checked' => false, 'options' => array()), 'MediaQuery' => array('checked' => false, 'options' => array('width' => array('string', ''), 'type' => array('string', 'all'))), 'NestedRules' => array('checked' => true, 'options' => array()), 'Rem' => array('checked' => true, 'options' => array()), 'IeTransform' => array('checked' => false, 'options' => array()), 'Variables' => array('checked' => true, 'options' => array()), 'VendorPrefixes' => array('checked' => true, 'options' => array()));
$input_code = $output_code = '';
//If the form has been send
if (isset($_POST['send'])) {
//Initialize stylecow
$input_code = $_POST['code'];
$css = Parser::parseString($input_code);
//Load the plugin configuration
$applyPlugins = array();
foreach ($plugins as $plugin => $settings) {
if (isset($_POST['plugin'][$plugin])) {
$applyPlugins[$plugin] = array();
$plugins[$plugin]['checked'] = true;
foreach ($settings['options'] as $name => $value) {
$valuePost = isset($_POST['pluginOptions'][$plugin][$name]) ? $_POST['pluginOptions'][$plugin][$name] : '';
if ($valuePost === '') {
switch ($value[0]) {
case 'bool':
$plugins[$plugin]['options'][$name][1] = false;
break;
default:
$plugins[$plugin]['options'][$name][1] = null;
break;
}
} else {
$plugins[$plugin]['options'][$name][1] = $valuePost;
}
/**
* Fix the different syntaxis for the linear-gradient
*
* @param string $value The value of the property
*
* @return array The linear-gradient code
*/
public static function webkitLinearGradient($value)
{
return Parser::executeFunctions($value, 'linear-gradient', function ($params) {
$point = 'top';
if (preg_match('/(top|bottom|left|right|deg)/', $params[0])) {
$point = array_shift($params);
}
switch ($point) {
case 'center top':
case 'top':
$start = 'left top';
$end = 'left bottom';
break;
case 'center bottom':
case 'bottom':
$start = 'left bottom';
$end = 'left top';
break;
case 'left top':
case 'left':
$start = 'left top';
$end = 'right top';
break;
case 'right top':
case 'right':
$start = 'right top';
$end = 'left top';
break;
default:
$radius = intval($point);
}
$color_stops = array();
$tk = count($params) - 1;
foreach ($params as $k => $param) {
$param = Parser::explode(' ', trim($param));
$color = $param[0];
$stop = isset($param[1]) ? $param[1] : null;
if ($k === 0) {
$text = 'from';
} else {
if ($k === $tk) {
$text = 'to';
} else {
$text = 'color-stop';
}
}
if ($stop) {
$color_stops[] = $text . '(' . $stop . ', ' . $color . ')';
} else {
$color_stops[] = $text . '(' . $color . ')';
}
}
if (isset($radius)) {
return '-webkit-gradient(linear, ' . $radius . 'deg, ' . implode(', ', $color_stops) . ')';
} else {
return '-webkit-gradient(linear, ' . $start . ', ' . $end . ', ' . implode(', ', $color_stops) . ')';
}
});
}
/**
* Execute all css functions found in the css value
*
* @param callable $callback The function to execute with the css functions. If the functions returns a string, it replaces the css code. It's passed two parameters to the function with all arguments of css function and the function name.
*/
public function executeAllFunctions($callback)
{
$this->value = Parser::executeFunctions($this->value, null, $callback, $this);
}
public static function parseMediaQueries(array $selectors)
{
$parsed = array();
foreach ($selectors as $k => $selector) {
$parsed[$k] = array();
foreach (Parser::explodeTrim(' and ', strtolower($selector)) as $rule) {
$expressions = Parser::explodeTrim(' ', $rule);
while ($expressions) {
$expression = array_shift($expressions);
if ($expression[0] === '(' && substr($expression, -1) === ')') {
$expression = trim(substr($expression, 1, -1));
}
if ($expression === 'not') {
$parsed[$k]['not'] = true;
continue;
}
if ($expression === 'only') {
$parsed[$k]['only'] = true;
continue;
}
if ($expression === 'all') {
continue;
}
if (in_array($expression, self::$types)) {
$parsed[$k]['type'] = $expression;
continue;
}
$expression = Parser::explodeTrim(':', $expression, 2);
$name = $expression[0];
$value = isset($expression[1]) ? $expression[1] : true;
if (isset(self::$expressions[$name])) {
$fn = self::$expressions[$name]['value'];
$parsed[$k][$name] = self::$fn($value);
continue;
}
if ((strpos($name, 'min-') === 0 || strpos($name, 'max-') === 0) && ($subname = substr($name, 4)) && isset(self::$expressions[$subname]) && self::$expressions[$subname]['min-max'] === true) {
$fn = self::$expressions[$subname]['value'];
$parsed[$k][$name] = self::$fn($value);
continue;
}
}
}
}
return $parsed;
}
