124 lines
2.8 KiB
PHP
124 lines
2.8 KiB
PHP
<?php
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/*
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* This file is part of the Symfony package.
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*
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* (c) Fabien Potencier <fabien@symfony.com>
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*
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* For the full copyright and license information, please view the LICENSE
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* file that was distributed with this source code.
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*/
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namespace Symfony\Component\Console\Formatter;
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use Symfony\Component\Console\Exception\InvalidArgumentException;
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/**
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* @author Jean-François Simon <contact@jfsimon.fr>
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*/
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class OutputFormatterStyleStack
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{
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/**
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* @var OutputFormatterStyleInterface[]
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*/
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private $styles;
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/**
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* @var OutputFormatterStyleInterface
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*/
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private $emptyStyle;
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/**
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* Constructor.
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*
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* @param OutputFormatterStyleInterface|null $emptyStyle
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*/
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public function __construct(OutputFormatterStyleInterface $emptyStyle = null)
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{
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$this->emptyStyle = $emptyStyle ?: new OutputFormatterStyle();
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$this->reset();
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}
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/**
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* Resets stack (ie. empty internal arrays).
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*/
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public function reset()
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{
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$this->styles = array();
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}
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/**
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* Pushes a style in the stack.
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*
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* @param OutputFormatterStyleInterface $style
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*/
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public function push(OutputFormatterStyleInterface $style)
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{
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$this->styles[] = $style;
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}
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/**
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* Pops a style from the stack.
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*
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* @param OutputFormatterStyleInterface|null $style
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*
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* @return OutputFormatterStyleInterface
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*
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* @throws InvalidArgumentException When style tags incorrectly nested
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*/
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public function pop(OutputFormatterStyleInterface $style = null)
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{
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if (empty($this->styles)) {
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return $this->emptyStyle;
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}
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if (null === $style) {
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return array_pop($this->styles);
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}
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foreach (array_reverse($this->styles, true) as $index => $stackedStyle) {
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if ($style->apply('') === $stackedStyle->apply('')) {
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$this->styles = array_slice($this->styles, 0, $index);
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return $stackedStyle;
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}
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}
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throw new InvalidArgumentException('Incorrectly nested style tag found.');
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}
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/**
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* Computes current style with stacks top codes.
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*
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* @return OutputFormatterStyle
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*/
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public function getCurrent()
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{
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if (empty($this->styles)) {
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return $this->emptyStyle;
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}
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return $this->styles[count($this->styles) - 1];
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}
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/**
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* @param OutputFormatterStyleInterface $emptyStyle
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*
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* @return OutputFormatterStyleStack
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*/
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public function setEmptyStyle(OutputFormatterStyleInterface $emptyStyle)
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{
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$this->emptyStyle = $emptyStyle;
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return $this;
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}
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/**
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* @return OutputFormatterStyleInterface
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*/
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public function getEmptyStyle()
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{
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return $this->emptyStyle;
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}
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}
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