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<?php |
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/** |
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* Platine Template |
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* |
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* Platine Template is a template engine that has taken a lot of inspiration from Django. |
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* |
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* This content is released under the MIT License (MIT) |
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* |
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* Copyright (c) 2020 Platine Template |
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* Copyright (c) 2014 Guz Alexander, http://guzalexander.com |
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* Copyright (c) 2011, 2012 Harald Hanek, http://www.delacap.com |
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* Copyright (c) 2006 Mateo Murphy |
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* |
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* Permission is hereby granted, free of charge, to any person obtaining a copy |
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* of this software and associated documentation files (the "Software"), to deal |
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* in the Software without restriction, including without limitation the rights |
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* to use, copy, modify, merge, publish, distribute, sublicense, and/or sell |
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* copies of the Software, and to permit persons to whom the Software is |
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* furnished to do so, subject to the following conditions: |
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* |
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* The above copyright notice and this permission notice shall be included in all |
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* copies or substantial portions of the Software. |
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* |
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* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR |
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* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, |
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* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE |
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* AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER |
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* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, |
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* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE |
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* SOFTWARE. |
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*/ |
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/** |
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* @file Variable.php |
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* |
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* The Template Variable class |
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* |
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* @package Platine\Template\Parser |
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* @author Platine Developers Team |
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* @copyright Copyright (c) 2020 |
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* @license http://opensource.org/licenses/MIT MIT License |
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* @link http://www.iacademy.cf |
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* @version 1.0.0 |
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* @filesource |
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*/ |
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declare(strict_types=1); |
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namespace Platine\Template\Parser; |
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use Platine\Template\Util\Helper; |
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/** |
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* Class Variable |
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* @package Platine\Template\Parser |
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*/ |
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class Variable |
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{ |
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/** |
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* The variable markup |
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* @var string |
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*/ |
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protected string $markup; |
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/** |
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* The filters to execute on the variable |
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* @var array<int, array<int, mixed>|string> |
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*/ |
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protected array $filters = []; |
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/** |
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* The name of the variable |
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* @var string |
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*/ |
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protected string $name; |
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/** |
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* The parser instance |
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* @var Parser |
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*/ |
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protected Parser $parser; |
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/** |
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* Create new instance |
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* @param string $markup |
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* @param Parser $parser |
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*/ |
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public function __construct(string $markup, Parser $parser) |
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{ |
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$this->markup = $markup; |
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$this->parser = $parser; |
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$filterSeparatorRegex = '/' |
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. Token::FILTER_SEPARATOR |
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. '\s*(.*)/m'; |
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$syntaxRegex = '/(' |
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. Token::QUOTED_FRAGMENT |
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. ')(.*)/m'; |
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$filterRegex = '/(?:\s+|' |
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. Token::QUOTED_FRAGMENT |
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. '|' |
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. Token::FILTER_METHOD_ARGS_SEPARATOR |
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. ')+/'; |
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$filterArgumentsRegex = '/(?:' |
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. Token::FILTER_NAME_ARG_SEPARATOR |
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. '|' |
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. Token::FILTER_METHOD_ARGS_SEPARATOR |
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. ')\s*((?:\w+\s*\:\s*)?' |
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. Token::QUOTED_FRAGMENT |
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. ')/'; |
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$lexerFilterSeparator = new Lexer($filterSeparatorRegex); |
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$lexerSyntax = new Lexer($syntaxRegex); |
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$lexerFilter = new Lexer($filterRegex); |
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$lexerFilterArguments = new Lexer($filterArgumentsRegex); |
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$this->filters = []; |
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if ($lexerSyntax->match($markup)) { |
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$nameMarkup = $lexerSyntax->getStringMatch(1); |
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$this->name = $nameMarkup; |
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$filterMarkup = $lexerSyntax->getStringMatch(2); |
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if ($lexerFilterSeparator->match($filterMarkup)) { |
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$lexerFilter->matchAll($lexerFilterSeparator->getStringMatch(1)); |
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foreach ($lexerFilter->getArrayMatch(0) as $filter) { |
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$filter = trim($filter); |
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$matches = []; |
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if (preg_match('/\w+/', $filter, $matches)) { |
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$filterName = $matches[0]; |
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$lexerFilterArguments->matchAll($filter); |
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$matches = Helper::arrayFlatten($lexerFilterArguments->getArrayMatch(1)); |
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$this->filters[] = $this->parseFilterExpressions($filterName, $matches); |
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} |
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} |
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} |
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} |
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if ($this->parser->getConfig()->isAutoEscape()) { |
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// if auto_escape is enabled, and |
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// - there's no raw filter, and |
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// - no escape filter |
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// - no other standard html-adding filter |
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// then |
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// - add a mandatory escape filter |
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$addEscapeFilter = true; |
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foreach ($this->filters as $filter) { |
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// with empty filters set we would just move along |
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if (in_array($filter[0], ['escape', 'raw', 'nl2br', 'escape_once'])) { |
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// if we have any raw-like filter, stop |
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$addEscapeFilter = false; |
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break; |
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} |
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} |
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if ($addEscapeFilter) { |
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$this->filters[] = ['escape', []]; |
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} |
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} |
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} |
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/** |
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* Return the name of variable |
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* @return string |
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*/ |
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public function getName(): string |
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{ |
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return $this->name; |
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} |
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/** |
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* Return the list of filter |
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* @return array<int, array<int, mixed>|string> |
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*/ |
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public function getFilters(): array |
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{ |
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return $this->filters; |
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} |
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/** |
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* Renders the variable with the data in the context |
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* @param Context $context |
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* @return mixed |
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*/ |
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public function render(Context $context) |
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{ |
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$output = $context->get($this->name); |
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foreach ($this->filters as $filter) { |
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list($filterName, $filterArgKeys) = $filter; |
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$filterArgValues = []; |
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$keywordArgValues = []; |
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foreach ($filterArgKeys as $argKey) { |
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if (is_array($argKey)) { |
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foreach ($argKey as $keywordArgName => $keywordArgKey) { |
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$keywordArgValues[$keywordArgName] = $context->get($keywordArgKey); |
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} |
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$filterArgValues[] = $keywordArgValues; |
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} else { |
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$filterArgValues[] = $context->get($argKey); |
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} |
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} |
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$output = $context->invokeFilter( |
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$filterName, |
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$output, |
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$filterArgValues |
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); |
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} |
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return $output; |
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} |
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/** |
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* Parse filter expression |
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* @param string $filterName |
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* @param array<int, mixed> $args |
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* @return array<int, array<int, mixed>|string> |
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*/ |
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protected function parseFilterExpressions(string $filterName, array $args): array |
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{ |
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$filterArgts = []; |
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$keywordArgs = []; |
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$lexerTagAtt = new Lexer( |
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'/\A' |
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. trim(Token::TAG_ATTRIBUTES, '/') |
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. '\z/' |
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); |
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foreach ($args as $arg) { |
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if ($lexerTagAtt->match($arg)) { |
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$keywordArgs[$lexerTagAtt->getStringMatch(1)] = $lexerTagAtt->getStringMatch(2); |
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} else { |
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$filterArgts[] = $arg; |
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} |
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} |
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if (count($keywordArgs) > 0) { |
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$filterArgts[] = $keywordArgs; |
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} |
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return [$filterName, $filterArgts]; |
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} |
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} |
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