112 lines
3.4 KiB
PHP
112 lines
3.4 KiB
PHP
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<?php
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/**
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* This program is free software; you can redistribute it and/or
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* modify it under the terms of the GNU General Public License
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* as published by the Free Software Foundation; under version 2
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* of the License (non-upgradable).
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software
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* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
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*
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* Copyright (c) 2013 (original work) Open Assessment Technologies SA (under the project TAO-PRODUCT);
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*
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*
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*/
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namespace oat\tao\helpers;
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class CssHandler
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{
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/**
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* Convert incoming CSS to CSS array
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* This CSS must have the format generated by the online editor
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*
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* @param $css
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* @return mixed
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*/
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public static function cssToArray($css)
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{
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if (!$css) {
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return [];
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}
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$css = str_replace(' /* Do not edit */', '', $css);
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$oldCssArr = explode("\n", $css);
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$newCssArr = [];
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foreach ($oldCssArr as $line) {
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if (false === strpos($line, '{')) {
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continue;
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}
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preg_match('~(?P<selector>[^{]+)(\{)(?P<rules>[^}]+)\}~', $line, $matches);
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foreach ($matches as $key => &$match) {
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if (is_numeric($key)) {
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continue;
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}
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$match = trim($match);
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if ($key === 'rules') {
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$ruleSet = array_filter(array_map('trim', explode(';', $match)));
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$match = [];
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foreach ($ruleSet as $rule) {
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$rule = array_map('trim', explode(':', $rule));
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$match[$rule[0]] = $rule[1];
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}
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}
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}
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$newCssArr[$matches['selector']] = $matches['rules'];
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}
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return $newCssArr;
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}
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/**
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* Convert incoming CSS array to proper CSS
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*
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* @param $array
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* @param $compressed boolean add break lines or not
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* @return string
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*/
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public static function arrayToCss($array, $compressed = true)
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{
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$css = '';
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$break = '';
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$space = '';
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if (!$compressed) {
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$break = "\n\t";
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$space = " ";
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}
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// rebuild CSS
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foreach ($array as $key1 => $value1) {
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$css .= $key1 . $space . '{';
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foreach ($value1 as $key2 => $value2) {
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// in the case that the code is embedded in a media query
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if (is_array($value2)) {
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foreach ($value2 as $value3) {
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$css .= $break . $key2 . $space . '{';
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foreach ($value3 as $mProp) {
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$css .= $break . $mProp . ':' . $value3 . ';';
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}
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$css .= ($compressed) ? '}' : "\n}\n";
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}
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}
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// regular selectors
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else {
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$css .= $break . $key2 . ':' . $value2 . ';';
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}
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}
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$css .= ($compressed) ? '}' : "\n}\n";
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}
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return $css;
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}
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}
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