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<?php |
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declare(strict_types=1); |
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namespace AlecRabbit\Snake; |
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use AlecRabbit\Snake\Contracts\Color; |
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use AlecRabbit\Snake\Contracts\SpinnerInterface; |
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use AlecRabbit\Snake\Core\Driver; |
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class Spinner implements SpinnerInterface |
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{ |
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private const CHARS = ['⠏', '⠛', '⠹', '⢸', '⣰', '⣤', '⣆', '⡇']; |
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private const COLORS = [ |
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196, |
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196, |
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202, |
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202, |
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208, |
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208, |
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214, |
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214, |
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220, |
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220, |
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226, |
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226, |
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190, |
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190, |
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154, |
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154, |
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118, |
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118, |
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82, |
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82, |
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46, |
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46, |
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47, |
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33, |
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33, |
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27, |
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27, |
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57, |
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93, |
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93, |
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129, |
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129, |
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165, |
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165, |
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201, |
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201, |
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200, |
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200, |
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199, |
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197, |
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197, |
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]; |
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/** @var Driver */ |
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private $driver; |
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/** @var int */ |
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private $currentCharIdx = 0; |
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/** @var int */ |
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private $currentColorIdx = 0; |
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/** @var int */ |
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private $framesCount; |
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/** @var int */ |
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private $colorCount; |
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/** @var string|null */ |
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3 |
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protected $message; |
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/** @var int */ |
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3 |
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protected $terminalCols; |
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1 |
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/** @var float */ |
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1 |
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protected $lastFrameTimestamp = 0; |
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1 |
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public function __construct(int $colorLevel = Color::COLOR_256) |
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{ |
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$this->driver = new Driver($colorLevel); |
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$this->framesCount = count(self::CHARS); |
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$this->colorCount = count(self::COLORS); |
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$this->terminalCols = (int) (exec('tput cols') ?? 80); |
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1 |
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} |
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1 |
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public function spin(): void |
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1 |
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{ |
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$message = is_string($this->message) && !empty($this->message) |
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? ' ' . $this->message |
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: ''; |
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1 |
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$output = |
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$this->driver->eraseSequence() |
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1 |
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. $this->driver->frameSequence( |
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1 |
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self::COLORS[$this->currentColorIdx], |
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self::CHARS[$this->currentCharIdx] |
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1 |
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) |
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. $message; |
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1 |
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$spaces = $this->terminalCols - mb_strlen($output); |
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$output = $output . str_repeat(' ', max(0, $spaces)); |
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$this->driver->write( |
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$output, |
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"\r" |
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1 |
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); |
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$this->update(); |
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1 |
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} |
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private function update(): void |
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1 |
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{ |
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/** @var float $now */ |
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$now = microtime(true); |
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if ($now >= $this->lastFrameTimestamp + $this->interval()) { |
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$this->lastFrameTimestamp = $now; |
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1 |
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if (++$this->currentCharIdx === $this->framesCount) { |
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$this->currentCharIdx = 0; |
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} |
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if (++$this->currentColorIdx === $this->colorCount) { |
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$this->currentColorIdx = 0; |
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1 |
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} |
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} |
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1 |
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} |
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1 |
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142
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/** @inheritDoc */ |
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1 |
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public function interval(): float |
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144
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{ |
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return 0.1; |
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} |
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147
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public function begin(): void |
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{ |
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$this->driver->hideCursor(); |
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} |
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public function end(): void |
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{ |
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$this->erase(); |
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$this->driver->showCursor(); |
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} |
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public function erase(): void |
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{ |
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$this->driver->write( |
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$this->driver->eraseSequence() |
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); |
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} |
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166
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public function useStdOut(): void |
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167
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{ |
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$this->driver->useStdOut(); |
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} |
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/** @inheritDoc */ |
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public function setMessage(?string $message): void |
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173
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{ |
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if ($message === null) { |
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$this->message = null; |
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return; |
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} |
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$message = mb_substr($message, 0, $this->terminalCols - 10); |
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$breakPosition = mb_strpos($message, "\n"); |
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if ($breakPosition !== false) { |
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$message = mb_substr($message, 0, $breakPosition); |
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} |
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$this->message = trim($message); |
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187
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} |
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188
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} |
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189
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|
alecrabbit /
php-cli-snake
