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<?php |
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declare(strict_types=1); |
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namespace AlecRabbit\Snake\Core; |
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use AlecRabbit\Snake\Contracts\Color; |
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class Driver |
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{ |
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public const HIDE_CURSOR_SEQ = "\033[?25l"; |
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public const SHOW_CURSOR_SEQ = "\033[?25h"; |
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/** @var false|resource */ |
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private $stream = STDERR; |
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/** @var int */ |
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private $colorLevel; |
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public function __construct(int $colorLevel) |
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{ |
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$this->setColorLevel($colorLevel); |
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1 |
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} |
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/** |
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* @param int $colorLevel |
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*/ |
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public function setColorLevel(int $colorLevel): void |
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{ |
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if (!in_array($colorLevel, Color::ALLOWED, true)) { |
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throw new \InvalidArgumentException('Unknown color level.'); |
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} |
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$this->colorLevel = $colorLevel; |
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} |
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public function moveBackSequence(): string |
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{ |
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return "\033[1D"; |
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} |
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public function eraseSequence(): string |
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{ |
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return "\033[1X"; |
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} |
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public function frameSequence(int $fg, string $char): string |
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{ |
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if (Color::COLOR_256 === $this->colorLevel) { |
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return "\033[38;5;{$fg}m{$char}\033[0m"; |
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} |
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if (Color::COLOR_16 === $this->colorLevel) { |
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return "\033[96m{$char}\033[0m"; |
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} |
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return $char; |
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} |
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public function hideCursor(): void |
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{ |
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$this->write(self::HIDE_CURSOR_SEQ); |
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} |
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/** |
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* @codeCoverageIgnore |
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* |
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* @param string ...$text |
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*/ |
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public function write(string ...$text): void |
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{ |
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foreach ($text as $s) { |
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if (false === $this->stream) { |
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echo $s; |
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} elseif (false === @fwrite($this->stream, $s)) { |
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// should never happen |
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throw new \RuntimeException('Unable to write stream.'); |
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} |
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} |
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if (false !== $this->stream) { |
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fflush($this->stream); |
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} |
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} |
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public function showCursor(): void |
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{ |
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$this->write(self::SHOW_CURSOR_SEQ); |
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} |
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/** |
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* @codeCoverageIgnore |
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*/ |
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public function useStdOut(): void |
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{ |
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$this->stream = STDOUT; |
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} |
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} |
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alecrabbit /
php-cli-snake
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