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<?php |
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/* |
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* This file is part of StringTemplate. |
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* |
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* (c) 2013 Nicolò Martini |
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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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namespace StringTemplate; |
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/** |
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* Class Engine |
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* |
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* Replace placeholder in strings with nested (array) values, allowing an optional |
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* sprintf-like parameter after the placeholder name. |
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* |
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* Example: |
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* <code> |
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* $engine->render('This is {a} and these are {c.0%E} and {c.1}', ['a' => 'b', 'c' => [1, 'e']]); |
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* //Prints "This is b and these are d and 1.000000E+0" |
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* </code> |
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*/ |
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class SprintfEngine extends Engine |
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{ |
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/** |
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* {@inheritdoc} |
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*/ |
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public function render($template, $value) |
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{ |
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//Performance: if there are no '%' fallback to Engine |
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if (strstr($template, '%') == false) { |
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return parent::render($template, $value); |
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} |
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$result = $template; |
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if (!is_array($value)) |
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$value = array('' => $value); |
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foreach (new NestedKeyIterator(new RecursiveArrayOnlyIterator($value)) as $key => $value) { |
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$pattern = "/" . $this->left . $key . "(%[^" . $this->right . "]+)?" . $this->right . "/"; |
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preg_match_all($pattern, $template, $matches); |
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$substs = array_map(function ($match) use ($value) { |
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return $match !== '' ? sprintf($match, $value) : $value; |
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}, $matches[1]); |
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$result = str_replace($matches[0], $substs, $result); |
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} |
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return $result; |
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} |
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} |