122 lines
2.1 KiB
PHP
122 lines
2.1 KiB
PHP
<?php declare(strict_types=1);
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namespace Aviat\Kilo;
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use Aviat\Kilo\Type\TerminalSize;
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class Terminal {
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/**
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* Get the size of the current terminal window
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*
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* @codeCoverageIgnore
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* @return TerminalSize
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*/
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public static function size(): TerminalSize
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{
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return new TerminalSize(...self::getWindowSize());
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}
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/**
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* Get the size of the current terminal window
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*
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* @codeCoverageIgnore
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* @return array
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*/
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public static function getWindowSize(): array
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{
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$ffiSize = Termios::getWindowSize();
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if ($ffiSize !== NULL)
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{
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return $ffiSize;
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}
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// Try using tput
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if (self::has_tput())
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{
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$rows = (int)trim((string)shell_exec('tput lines'));
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$cols = (int)trim((string)shell_exec('tput cols'));
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if ($rows > 0 && $cols > 0)
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{
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return [$rows, $cols];
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}
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}
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// Worst-case, return an arbitrary 'standard' size
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return [25, 80];
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}
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/**
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* Clear the screen and reset the cursor position
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*/
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public static function clear(): void
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{
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self::write(ANSI::CLEAR_SCREEN . ANSI::RESET_CURSOR);
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}
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/**
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* Pull input from the stdin stream.
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*
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* @codeCoverageIgnore
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* @param int $len
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* @return string
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*/
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public static function read(int $len = 128): string
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{
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$handle = fopen('php://stdin', 'rb');
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if ($handle === false)
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{
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return '';
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}
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$input = fread($handle, $len);
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fclose($handle);
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return (is_string($input)) ? $input : '';
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}
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/**
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* Write to the stdout stream
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*
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* @codeCoverageIgnore
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* @param string $str
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* @param int|NULL $len
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* @return int|false
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*/
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public static function write(string $str, int $len = NULL): int|false
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{
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$handle = fopen('php://stdout', 'ab');
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if ($handle === false)
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{
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return false;
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}
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$res = (is_int($len))
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? fwrite($handle, $str, $len)
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: fwrite($handle, $str);
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fflush($handle);
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fclose($handle);
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return $res;
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}
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/**
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* See if tput exists for fallback terminal size detection
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*
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* @return bool
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* @codeCoverageIgnore
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*/
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private static function has_tput(): bool
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{
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$cmd = shell_exec('type tput');
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if ( ! is_string($cmd))
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{
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return FALSE;
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}
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return str_contains($cmd, ' is ');
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}
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}
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