120 lines
2.4 KiB
PHP
120 lines
2.4 KiB
PHP
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<?php
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namespace Laravel\Prompts;
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use ReflectionClass;
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use RuntimeException;
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use Symfony\Component\Console\Terminal as SymfonyTerminal;
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class Terminal
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{
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/**
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* The initial TTY mode.
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*/
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protected ?string $initialTtyMode;
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/**
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* The Symfony Terminal instance.
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*/
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protected SymfonyTerminal $terminal;
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/**
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* Create a new Terminal instance.
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*/
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public function __construct()
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{
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$this->terminal = new SymfonyTerminal();
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}
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/**
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* Read a line from the terminal.
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*/
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public function read(): string
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{
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$input = fread(STDIN, 1024);
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return $input !== false ? $input : '';
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}
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/**
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* Set the TTY mode.
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*/
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public function setTty(string $mode): void
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{
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$this->initialTtyMode ??= $this->exec('stty -g');
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$this->exec("stty $mode");
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}
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/**
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* Restore the initial TTY mode.
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*/
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public function restoreTty(): void
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{
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if (isset($this->initialTtyMode)) {
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$this->exec("stty {$this->initialTtyMode}");
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$this->initialTtyMode = null;
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}
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}
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/**
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* Get the number of columns in the terminal.
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*/
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public function cols(): int
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{
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return $this->terminal->getWidth();
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}
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/**
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* Get the number of lines in the terminal.
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*/
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public function lines(): int
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{
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return $this->terminal->getHeight();
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}
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/**
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* (Re)initialize the terminal dimensions.
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*/
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public function initDimensions(): void
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{
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(new ReflectionClass($this->terminal))
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->getMethod('initDimensions')
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->invoke($this->terminal);
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}
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/**
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* Exit the interactive session.
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*/
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public function exit(): void
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{
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exit(1);
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}
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/**
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* Execute the given command and return the output.
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*/
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protected function exec(string $command): string
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{
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$process = proc_open($command, [
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1 => ['pipe', 'w'],
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2 => ['pipe', 'w'],
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], $pipes);
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if (! $process) {
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throw new RuntimeException('Failed to create process.');
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}
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$stdout = stream_get_contents($pipes[1]);
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$stderr = stream_get_contents($pipes[2]);
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$code = proc_close($process);
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if ($code !== 0 || $stdout === false) {
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throw new RuntimeException(trim($stderr ?: "Unknown error (code: $code)"), $code);
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}
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return $stdout;
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}
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}
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