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148 lars 1 
<?php declare(strict_types=1);
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/*
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 * This file is part of phpunit/php-text-template.
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 *
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 * (c) Sebastian Bergmann <sebastian@phpunit.de>
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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 SebastianBergmann\Template;
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use function array_merge;
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use function file_exists;
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use function file_get_contents;
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use function file_put_contents;
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use function sprintf;
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use function str_replace;
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final class Template
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{
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    /**
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     * @var string
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     */
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    private $template = '';
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    /**
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     * @var string
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     */
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    private $openDelimiter;
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    /**
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     * @var string
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     */
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    private $closeDelimiter;
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    /**
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     * @var array
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     */
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    private $values = [];
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    /**
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     * @throws InvalidArgumentException
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     */
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    public function __construct(string $file = '', string $openDelimiter = '{', string $closeDelimiter = '}')
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    {
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        $this->setFile($file);
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        $this->openDelimiter  = $openDelimiter;
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        $this->closeDelimiter = $closeDelimiter;
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    }
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    /**
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     * @throws InvalidArgumentException
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     */
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    public function setFile(string $file): void
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    {
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        $distFile = $file . '.dist';
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        if (file_exists($file)) {
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            $this->template = file_get_contents($file);
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        } elseif (file_exists($distFile)) {
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            $this->template = file_get_contents($distFile);
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        } else {
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            throw new InvalidArgumentException(
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                sprintf(
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                    'Failed to load template "%s"',
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                    $file
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                )
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            );
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        }
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    }
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    public function setVar(array $values, bool $merge = true): void
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    {
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        if (!$merge || empty($this->values)) {
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            $this->values = $values;
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        } else {
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            $this->values = array_merge($this->values, $values);
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        }
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    }
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    public function render(): string
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    {
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        $keys = [];
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        foreach ($this->values as $key => $value) {
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            $keys[] = $this->openDelimiter . $key . $this->closeDelimiter;
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        }
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        return str_replace($keys, $this->values, $this->template);
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    }
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    /**
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     * @codeCoverageIgnore
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     */
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    public function renderTo(string $target): void
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    {
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        if (!file_put_contents($target, $this->render())) {
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            throw new RuntimeException(
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                sprintf(
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                    'Writing rendered result to "%s" failed',
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                    $target
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                )
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            );
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        }
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    }
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}