144 lines
4.1 KiB
PHP
144 lines
4.1 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\Output;
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use Symfony\Component\Console\Formatter\OutputFormatterInterface;
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use Symfony\Component\Console\Helper\Helper;
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use Symfony\Component\Console\Terminal;
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/**
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* @author Pierre du Plessis <pdples@gmail.com>
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* @author Gabriel Ostrolucký <gabriel.ostrolucky@gmail.com>
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*/
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class ConsoleSectionOutput extends StreamOutput
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{
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private $content = [];
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private $lines = 0;
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private $sections;
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private $terminal;
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/**
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* @param resource $stream
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* @param ConsoleSectionOutput[] $sections
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*/
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public function __construct($stream, array &$sections, int $verbosity, bool $decorated, OutputFormatterInterface $formatter)
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{
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parent::__construct($stream, $verbosity, $decorated, $formatter);
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array_unshift($sections, $this);
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$this->sections = &$sections;
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$this->terminal = new Terminal();
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}
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/**
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* Clears previous output for this section.
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*
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* @param int $lines Number of lines to clear. If null, then the entire output of this section is cleared
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*/
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public function clear(?int $lines = null)
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{
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if (empty($this->content) || !$this->isDecorated()) {
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return;
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}
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if ($lines) {
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array_splice($this->content, -($lines * 2)); // Multiply lines by 2 to cater for each new line added between content
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} else {
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$lines = $this->lines;
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$this->content = [];
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}
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$this->lines -= $lines;
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parent::doWrite($this->popStreamContentUntilCurrentSection($lines), false);
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}
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/**
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* Overwrites the previous output with a new message.
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*
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* @param array|string $message
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*/
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public function overwrite($message)
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{
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$this->clear();
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$this->writeln($message);
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}
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public function getContent(): string
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{
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return implode('', $this->content);
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}
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/**
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* @internal
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*/
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public function addContent(string $input)
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{
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foreach (explode(\PHP_EOL, $input) as $lineContent) {
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$this->lines += ceil($this->getDisplayLength($lineContent) / $this->terminal->getWidth()) ?: 1;
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$this->content[] = $lineContent;
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$this->content[] = \PHP_EOL;
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}
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}
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/**
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* {@inheritdoc}
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*/
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protected function doWrite(string $message, bool $newline)
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{
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if (!$this->isDecorated()) {
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parent::doWrite($message, $newline);
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return;
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}
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$erasedContent = $this->popStreamContentUntilCurrentSection();
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$this->addContent($message);
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parent::doWrite($message, true);
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parent::doWrite($erasedContent, false);
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}
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/**
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* At initial stage, cursor is at the end of stream output. This method makes cursor crawl upwards until it hits
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* current section. Then it erases content it crawled through. Optionally, it erases part of current section too.
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*/
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private function popStreamContentUntilCurrentSection(int $numberOfLinesToClearFromCurrentSection = 0): string
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{
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$numberOfLinesToClear = $numberOfLinesToClearFromCurrentSection;
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$erasedContent = [];
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foreach ($this->sections as $section) {
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if ($section === $this) {
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break;
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}
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$numberOfLinesToClear += $section->lines;
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$erasedContent[] = $section->getContent();
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}
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if ($numberOfLinesToClear > 0) {
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// move cursor up n lines
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parent::doWrite(sprintf("\x1b[%dA", $numberOfLinesToClear), false);
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// erase to end of screen
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parent::doWrite("\x1b[0J", false);
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}
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return implode('', array_reverse($erasedContent));
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}
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private function getDisplayLength(string $text): int
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{
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return Helper::width(Helper::removeDecoration($this->getFormatter(), str_replace("\t", ' ', $text)));
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}
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}
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