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<?php |
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|
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/* |
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* This file is part of the Assetic package, an OpenSky project. |
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* |
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* (c) 2010-2014 OpenSky Project Inc |
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* |
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* For the full copyright and license information, please view the LICENSE |
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* file that was distributed with this source code. |
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*/ |
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|
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namespace Assetic\Util; |
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|
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/** |
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* Variable utilities. |
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* |
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* @author Johannes M. Schmitt <[email protected]> |
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*/ |
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abstract class VarUtils |
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{ |
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/** |
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* Resolves variable placeholders. |
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* |
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* @param string $template A template string |
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* @param array $vars Variable names |
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* @param array $values Variable values |
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* |
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* @return string The resolved string |
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* |
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* @throws \InvalidArgumentException If there is a variable with no value |
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*/ |
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public static function resolve($template, array $vars, array $values) |
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{ |
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$map = array(); |
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foreach ($vars as $var) { |
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if (false === strpos($template, '{'.$var.'}')) { |
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continue; |
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} |
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|
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if (!isset($values[$var])) { |
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throw new \InvalidArgumentException(sprintf('The template "%s" contains the variable "%s", but was not given any value for it.', $template, $var)); |
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} |
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|
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$map['{'.$var.'}'] = $values[$var]; |
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} |
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|
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return strtr($template, $map); |
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} |
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|
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public static function getCombinations(array $vars, array $values) |
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{ |
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if (!$vars) { |
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return array(array()); |
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} |
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|
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$combinations = array(); |
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$nbValues = array(); |
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foreach ($values as $var => $vals) { |
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if (!in_array($var, $vars, true)) { |
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continue; |
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} |
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|
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$nbValues[$var] = count($vals); |
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} |
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|
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for ($i = array_product($nbValues), $c = $i * 2; $i < $c; $i++) { |
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$k = $i; |
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$combination = array(); |
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|
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foreach ($vars as $var) { |
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$combination[$var] = $values[$var][$k % $nbValues[$var]]; |
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$k = intval($k / $nbValues[$var]); |
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} |
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|
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$combinations[] = $combination; |
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} |
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|
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return $combinations; |
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} |
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|
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final private function __construct() |
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{ |
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} |
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} |
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|
