| commit | author | age | ||
| 15e03a | 1 | <?php |
| F | 2 | |
| 3 | namespace Framework; | |
| 4 | ||
| 5 | class MVCTemplateViewer implements TemplateViewerInterface { | |
| 6 | public function render(string $template, array $data = []): string { | |
| 7 | ||
| 8 | $views_dir = dirname(__DIR__, 2) . "/views/"; | |
| 9 | ||
| 10 | $code = file_get_contents($views_dir . $template); | |
| 11 | ||
| 12 | if(preg_match('#^{% extends "(?<template>.*)" %}#', $code, $matches) === 1) { | |
| 13 | $base = file_get_contents($views_dir . $matches["template"]); | |
| 14 | $blocks = $this->getBlocks($code); | |
| 15 | $code = $this->replaceYields($base, $blocks); | |
| 16 | } | |
| 17 | ||
| 18 | $code = $this->loadIncludes($views_dir, $code); | |
| 19 | ||
| 20 | $code = $this->replaceVariables($code); | |
| 21 | ||
| 22 | $code = $this->replacePHP($code); | |
| 23 | ||
| 24 | extract($data, EXTR_SKIP); | |
| 25 | ||
| 26 | ob_start(); | |
| 27 | eval("?>$code"); | |
| 28 | ||
| 29 | return ob_get_clean(); | |
| 30 | ||
| 31 | } | |
| 32 | ||
| 33 | public function replaceVariables(string $code) : string { | |
| 34 | return preg_replace("#{{\s*(\S+)\s*}}#", "<?= htmlspecialchars(\$$1 ?? \"\") ?>", $code); | |
| 35 | } | |
| 36 | ||
| 37 | public function replacePHP(string $code) : string { | |
| 38 | return preg_replace("#{%\s*(.+)\s*%}#", "<?php $1 ?>", $code); | |
| 39 | } | |
| 40 | ||
| 41 | private function getBlocks(string $code) : array { | |
| 42 | preg_match_all("#{% block (?<name>\w+) %}(?<content>.*?){% endblock %}#s" , $code, $matches, PREG_SET_ORDER); | |
| 43 | ||
| 44 | $blocks = []; | |
| 45 | ||
| 46 | foreach($matches as $match) { | |
| 47 | $blocks[$match["name"]] = $match["content"]; | |
| 48 | } | |
| 49 | ||
| 50 | return $blocks; | |
| 51 | ||
| 52 | } | |
| 53 | ||
| 54 | private function replaceYields(string $code, array $blocks): string { | |
| 55 | preg_match_all("#{% yield (?<name>\w+) %}#", $code, $matches, PREG_SET_ORDER); | |
| 56 | ||
| 57 | foreach($matches as $match) { | |
| 58 | $name = $match["name"]; | |
| 59 | $block = $blocks[$name]; | |
| 60 | ||
| 61 | $code = preg_replace("#{% yield $name %}#", $block, $code); | |
| 62 | } | |
| 63 | return $code; | |
| 64 | } | |
| 65 | ||
| 66 | private function loadIncludes(string $dir, string $code): string { | |
| 67 | preg_match_all('#{% include "(?<template>.*?)" %}#', $code, $matches, PREG_SET_ORDER); | |
| 68 | foreach($matches as $match) { | |
| 69 | $template = $match['template']; | |
| 70 | ||
| 71 | $contents = file_get_contents($dir . $template); | |
| 72 | ||
| 73 | $code = preg_replace("#{% include \"$template\" %}#", $contents, $code); | |
| 74 | } | |
| 75 | ||
| 76 | return $code; | |
| 77 | } | |
| 78 | } | |
