View.php

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<?php
 
namespace SteeveDroz\NanoFramework;
 
class View
{
    public function parseFile(string $source, array $variables = [], array $rawVariables = []): string
    {
        return rtrim($this->parse(file_get_contents($source), $variables, $rawVariables), PHP_EOL);
    }
 
    public function parse(string $content, array $variables = [], array $rawVariables = []): string
    {
        $content = preg_replace_callback('#\{\s*if\s*(\w+)\s*\}(.*)(?:\{\s*else\s*\}(.*))?\{\s*endif\s*\}#Ums', function ($matches) use ($variables, $rawVariables) {
            $condition = $variables[$matches[1]] ?? $rawVariables[$matches[1]] ?? false;
            if ($condition) {
                return $this->parse($matches[2], $variables, $rawVariables);
            }
            if (count($matches) > 3) {
                return $this->parse($matches[3], $variables, $rawVariables);
            }
 
            return '';
        }, $content);
        foreach ($variables as $key => $value) {
            if (is_array($value)) {
                $content = preg_replace_callback('#\{\s*' . $key . '\s*\}((?:.|[\n\r])*)\{/\s*' . $key . '\s*\}#Um', function (array $matches) use ($value, $variables, $rawVariables) {
                    $innerContent = '';
                    foreach ($value as $innerElement => $attributes) {
                        $innerContent .= $this->parse($matches[1], array_merge($variables, $attributes), $rawVariables);
                    }
 
                    return $innerContent;
                }, $content);
            } else {
                $content = preg_replace('#\{' . $key . '\}#', htmlspecialchars($value), $content);
            }
        }
 
        foreach ($rawVariables as $key => $value) {
            if (is_array($value)) {
                $content = preg_replace_callback('#\{\s*' . $key . '\s*\}((?:.|[\n\r])*)\{/\s*' . $key . '\s*\}#Um', function (array $matches) use ($value, $variables, $rawVariables) {
                    $innerContent = '';
                    foreach ($value as $innerElement => $attributes) {
                        $innerContent .= $this->parse($matches[1], $variables, array_merge($rawVariables, $attributes));
                    }
 
                    return $innerContent;
                }, $content);
            } else {
                $content = preg_replace('#\{' . $key . '\}#', $value, $content);
            }
        }
 
        return $content;
    }
}