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<?php |
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declare(strict_types=1); |
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namespace AbterPhp\Framework\Template; |
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use AbterPhp\Framework\Html\Attributes; |
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class Template |
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{ |
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public const TYPE_BLOCK = 'block'; |
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protected string $rawContent = ''; |
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/** @var array<string,array<string,ParsedTemplate[]>> */ |
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protected array $parsedTemplates = []; |
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/** @var array<string,string> */ |
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protected array $vars = []; |
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/** @var string[] */ |
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protected array $types = [self::TYPE_BLOCK]; |
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/** |
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* Template constructor. |
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* |
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* @param string $rawContent |
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* @param string[] $vars |
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* @param string[] $types |
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*/ |
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public function __construct(string $rawContent = '', array $vars = [], array $types = [self::TYPE_BLOCK]) |
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{ |
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$this->rawContent = $rawContent; |
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$this->vars = $vars; |
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$this->types = $types; |
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} |
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/** |
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* @param string $rawContent |
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* |
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* @return Template |
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*/ |
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public function setRawContent(string $rawContent): Template |
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{ |
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$this->rawContent = $rawContent; |
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return $this; |
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} |
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/** |
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* @param string[] $vars |
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* |
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* @return Template |
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*/ |
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public function setVars(array $vars): Template |
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{ |
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$this->vars = $vars; |
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return $this; |
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} |
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/** |
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* @param string[] $types |
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* |
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* @return Template |
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*/ |
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public function setTypes(array $types): Template |
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{ |
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$this->types = $types; |
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return $this; |
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} |
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/** |
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* @return ParsedTemplate[][][] |
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*/ |
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public function parse(): array |
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{ |
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if (!$this->rawContent) { |
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return []; |
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} |
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$this->replaceVars(); |
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$this->parsedTemplates = $this->parseTemplates(); |
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return $this->parsedTemplates; |
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} |
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/** |
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* Replaces is {{var/xxx}} occurrences in the content |
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*/ |
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private function replaceVars(): void |
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{ |
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$matches = []; |
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preg_match_all('/{{\s*var\/([\w-]+)\s*}}/', $this->rawContent, $matches); |
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foreach ($matches[1] as $idx => $varName) { |
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$search = $matches[0][$idx]; |
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$replaceWith = ''; |
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if (array_key_exists($varName, $this->vars)) { |
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$replaceWith = $this->vars[$varName]; |
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} |
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$this->rawContent = str_replace($search, $replaceWith, $this->rawContent); |
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} |
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} |
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/** |
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* @return array<string,ParsedTemplate[][]> |
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*/ |
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private function parseTemplates(): array |
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{ |
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$matches = []; |
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$pattern = sprintf('/\{\{\s*(%s)\/([\w-]+)(\s+[^}]*)?\s*\}\}/Ums', implode('|', $this->types)); |
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preg_match_all($pattern, $this->rawContent, $matches); |
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$parsedTemplates = []; |
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foreach ($matches[0] as $idx => $occurrence) { |
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$type = $matches[1][$idx]; |
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$identifier = $matches[2][$idx]; |
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$attributes = $this->parseAttributes($matches[3][$idx]); |
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$this->addOccurrence($parsedTemplates, $type, $identifier, $attributes, $occurrence); |
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} |
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return $parsedTemplates; |
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} |
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/** |
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* @param string $rawAttributes |
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* |
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* @return Attributes|null |
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*/ |
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private function parseAttributes(string $rawAttributes): ?Attributes |
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{ |
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if (trim($rawAttributes) === '') { |
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return null; |
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} |
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$matches = []; |
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$pattern = '/\s*([\w_\-]*)\s*\=\s*\"([^"]*)\"\s*/Ums'; |
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preg_match_all($pattern, $rawAttributes, $matches); |
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$attributes = []; |
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foreach (array_keys($matches[0]) as $idx) { |
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$attributes[$matches[1][$idx]] = $matches[2][$idx]; |
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} |
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return new Attributes($attributes); |
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} |
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/** |
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* @param ParsedTemplate[][][] &$parsedTemplates |
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* @param string $type |
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* @param string $identifier |
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* @param Attributes|null $attributes |
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* @param string $occurrence |
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*/ |
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private function addOccurrence( |
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array &$parsedTemplates, |
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string $type, |
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string $identifier, |
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?Attributes $attributes, |
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string $occurrence |
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): void { |
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if (!isset($parsedTemplates[$type][$identifier])) { |
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$parsedTemplates[$type][$identifier][] = new ParsedTemplate($type, $identifier, $attributes, [$occurrence]); |
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return; |
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} |
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foreach ($parsedTemplates[$type][$identifier] as $parsedTemplate) { |
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// Note: == is used on purpose here! |
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if ($parsedTemplate->getAttributes() != $attributes) { |
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continue; |
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} |
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$parsedTemplate->addOccurrence($occurrence); |
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return; |
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} |
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$parsedTemplates[$type][$identifier][] = new ParsedTemplate($type, $identifier, $attributes, [$occurrence]); |
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} |
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/** |
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* @param string[][] $subTemplateValues |
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* |
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* @return string |
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*/ |
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public function render(array $subTemplateValues): string |
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{ |
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$content = $this->rawContent; |
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foreach ($this->parsedTemplates as $type => $typeTemplates) { |
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if (!array_key_exists($type, $subTemplateValues)) { |
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$subTemplateValues[$type] = []; |
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} |
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foreach ($typeTemplates as $identifier => $identifierTemplates) { |
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$replace = ''; |
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if (array_key_exists($identifier, $subTemplateValues[$type])) { |
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$replace = $subTemplateValues[$type][$identifier]; |
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} |
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foreach ($identifierTemplates as $parsedTemplate) { |
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$content = str_replace($parsedTemplate->getOccurrences(), $replace, $content); |
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} |
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} |
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} |
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return $content; |
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} |
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} |
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