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<?php |
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/** |
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* CMS Pico - Create websites using Pico CMS for Nextcloud. |
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* |
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* @copyright Copyright (c) 2019, Daniel Rudolf (<[email protected]>) |
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* |
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* @license GNU AGPL version 3 or any later version |
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* |
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* This program is free software: you can redistribute it and/or modify |
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* it under the terms of the GNU Affero General Public License as |
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* published by the Free Software Foundation, either version 3 of the |
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* License, or (at your option) any later version. |
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* |
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* This program is distributed in the hope that it will be useful, |
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* but WITHOUT ANY WARRANTY; without even the implied warranty of |
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
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* GNU Affero General Public License for more details. |
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* |
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* You should have received a copy of the GNU Affero General Public License |
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* along with this program. If not, see <http://www.gnu.org/licenses/>. |
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*/ |
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declare(strict_types=1); |
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namespace OCA\CMSPico\Files\Glob; |
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class GlobPattern |
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{ |
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/** @var int */ |
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const TYPE_NONE = 0; |
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/** @var int */ |
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const TYPE_STATIC = 1; |
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/** @var int */ |
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const TYPE_REGEX = 2; |
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/** @var string */ |
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protected $delimiter = '~'; |
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/** @var string[] */ |
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protected $functionChars = [ '*', '?', '[' ]; |
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/** @var string[] */ |
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protected $specialChars = [ '*', '?', '[', ']', '-', '\\' ]; |
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/** @var string[] */ |
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protected $escapeChars = [ '.', '+', '^', '$', '(', ')', '{', '}', '=', '!', '<', '>', '|', ':', '#', '~' ]; |
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/** @var string */ |
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protected $pattern; |
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/** @var int */ |
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protected $patternLength; |
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/** @var int */ |
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protected $patternPos = 0; |
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/** @var string */ |
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protected $current = ''; |
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/** @var array */ |
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protected $context = []; |
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/** @var array */ |
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protected $components = []; |
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/** |
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* GlobPattern constructor. |
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* |
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* @param string $pattern |
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*/ |
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public function __construct(string $pattern) |
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{ |
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$this->pattern = $pattern; |
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$this->patternLength = strlen($pattern); |
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} |
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/** |
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* @param int $depth |
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* @param string $fileName |
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* |
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* @return bool |
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*/ |
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public function compare(int $depth, string $fileName): bool |
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{ |
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/** @var int $componentType */ |
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/** @var string $componentPattern */ |
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list($componentType, $componentPattern) = $this->getComponent($depth); |
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if ($componentType === self::TYPE_STATIC) { |
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return ($fileName === $componentPattern); |
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} elseif ($componentType === self::TYPE_REGEX) { |
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return (bool) preg_match($componentPattern, $fileName); |
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} |
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return false; |
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} |
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/** |
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* @param int $depth |
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* |
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* @return array |
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*/ |
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private function getComponent(int $depth): array |
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{ |
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while (!isset($this->components[$depth])) { |
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if ($this->patternPos === $this->patternLength) { |
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return [ self::TYPE_NONE, '' ]; |
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} |
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$this->evaluateComponent(); |
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} |
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return $this->components[$depth]; |
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} |
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/** |
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* @return void |
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*/ |
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private function evaluateComponent() |
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{ |
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$this->resetComponent(); |
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for (; $this->patternPos < $this->patternLength; $this->patternPos++) { |
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$char = $this->pattern[$this->patternPos]; |
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if ($char === '/') { |
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$this->patternPos++; |
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break; |
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} |
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if ($this->context['isStatic']) { |
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if (!in_array($char, $this->functionChars, true)) { |
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$this->current .= $char; |
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continue; |
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} |
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$this->current = preg_quote($this->current, $this->delimiter); |
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$this->context['isStatic'] = false; |
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} |
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$this->evaluateComponentChar($char); |
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} |
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$this->commitComponent(); |
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} |
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/** |
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* @param string $char |
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*/ |
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private function evaluateComponentChar(string $char) |
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{ |
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$i = &$this->patternPos; |
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switch ($char) { |
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case '*': |
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$this->current .= $this->context['inGroup'] ? '\\*' : '[^/]*'; |
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break; |
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case '?': |
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$this->current .= $this->context['inGroup'] ? '\\?' : '.'; |
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break; |
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case '[': |
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if ($this->context['inGroup']) { |
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$this->current .= '\\['; |
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break; |
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} |
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$this->current .= '['; |
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$this->context['inGroup'] = true; |
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if (isset($this->pattern[$i + 1]) && ($this->pattern[$i + 1] === '!')) { |
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$this->current .= '^'; |
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$i++; |
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} |
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break; |
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case ']': |
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$this->current .= $this->context['inGroup'] ? ']' : '\\]'; |
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$this->context['inGroup'] = false; |
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break; |
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case '-': |
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$this->current .= $this->context['inGroup'] ? '-' : '\\-'; |
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break; |
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case '\\': |
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if (isset($this->pattern[$i + 1]) && in_array($this->pattern[$i + 1], $this->specialChars, true)) { |
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$this->current .= '\\' . $this->pattern[$i + 1]; |
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$i++; |
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} else { |
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$this->current .= '\\\\'; |
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} |
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break; |
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default: |
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$this->current .= in_array($char, $this->escapeChars, true) ? '\\' . $char : $char; |
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break; |
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} |
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} |
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/** |
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* @return void |
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*/ |
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private function commitComponent() |
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{ |
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if ($this->context['inGroup']) { |
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throw new \InvalidArgumentException('Invalid glob: Missing "]": ' . $this->pattern); |
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} |
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if ($this->context['isStatic']) { |
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$this->components[] = [ self::TYPE_STATIC, $this->current ]; |
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} else { |
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$regex = $this->delimiter . '^' . $this->current . '$' . $this->delimiter; |
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$this->components[] = [ self::TYPE_REGEX, $regex ]; |
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} |
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} |
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/** |
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* @return void |
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*/ |
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private function resetComponent() |
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{ |
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$this->current = ''; |
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$this->context = [ |
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'isStatic' => true, |
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'inGroup' => false |
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]; |
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} |
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} |
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nextcloud /
cms_pico
