Code Coverage |
||||||||||
Classes and Traits |
Functions and Methods |
Lines |
||||||||
| Total | |
0.00% |
0 / 1 |
|
0.00% |
0 / 4 |
CRAP | |
0.00% |
0 / 29 |
| Termios | |
0.00% |
0 / 1 |
|
0.00% |
0 / 4 |
56 | |
0.00% |
0 / 29 |
| __construct | |
0.00% |
0 / 1 |
6 | |
0.00% |
0 / 6 |
|||
| enableRawMode | |
0.00% |
0 / 1 |
6 | |
0.00% |
0 / 14 |
|||
| disableRawMode | |
0.00% |
0 / 1 |
2 | |
0.00% |
0 / 6 |
|||
| getInstance | |
0.00% |
0 / 1 |
6 | |
0.00% |
0 / 3 |
|||
| 1 | <?php declare(strict_types=1); |
| 2 | |
| 3 | namespace Aviat\Kilo; |
| 4 | |
| 5 | use FFI; |
| 6 | use FFI\CData; |
| 7 | |
| 8 | use Aviat\Kilo\Enum\C; |
| 9 | |
| 10 | /** |
| 11 | * An implicit singleton wrapper around terminal settings to simplify enabling/disabling raw mode |
| 12 | */ |
| 13 | class Termios { |
| 14 | private CData $originalTermios; |
| 15 | |
| 16 | private function __construct() |
| 17 | { |
| 18 | $ffi = get_ffi(); |
| 19 | $termios = $ffi->new('struct termios'); |
| 20 | $res = $ffi->tcgetattr(C::STDIN_FILENO, FFI::addr($termios)); |
| 21 | |
| 22 | if ($res === -1) |
| 23 | { |
| 24 | throw new TermiosException('Failed to get existing terminal settings'); |
| 25 | } |
| 26 | |
| 27 | $this->originalTermios = $termios; |
| 28 | } |
| 29 | |
| 30 | /** |
| 31 | * Put the current terminal into raw input mode |
| 32 | * |
| 33 | * Returns TRUE if successful. Will return NULL if run more than once, as |
| 34 | * raw mode is pretty binary...there's no point in reapplying raw mode! |
| 35 | * |
| 36 | * @return bool|null |
| 37 | */ |
| 38 | public static function enableRawMode(): ?bool |
| 39 | { |
| 40 | static $run = FALSE; |
| 41 | |
| 42 | // Don't run this more than once! |
| 43 | if ($run === TRUE) |
| 44 | { |
| 45 | return NULL; |
| 46 | } |
| 47 | |
| 48 | $run = TRUE; |
| 49 | |
| 50 | $instance = self::getInstance(); |
| 51 | |
| 52 | // Make sure to restore normal mode on exit/die/crash |
| 53 | register_shutdown_function([static::class, 'disableRawMode']); |
| 54 | |
| 55 | $termios = clone $instance->originalTermios; |
| 56 | // $termios->c_iflag &= ~(C::BRKINT | C::ICRNL | C::INPCK | C::ISTRIP | C::IXON); |
| 57 | // $termios->c_oflag &= ~(C::OPOST); |
| 58 | $termios->c_iflag = 0; |
| 59 | $termios->c_oflag = 0; |
| 60 | $termios->c_cflag |= (C::CS8); |
| 61 | $termios->c_lflag &= ~( C::ECHO | C::ICANON | C::IEXTEN | C::ISIG ); |
| 62 | $termios->c_cc[C::VMIN] = 0; |
| 63 | $termios->c_cc[C::VTIME] = 1; |
| 64 | |
| 65 | // Turn on raw mode |
| 66 | $res = get_ffi()->tcsetattr(C::STDIN_FILENO, C::TCSAFLUSH, FFI::addr($termios)); |
| 67 | |
| 68 | return $res !== -1; |
| 69 | } |
| 70 | |
| 71 | /** |
| 72 | * Restores terminal settings that were changed when going into raw mode. |
| 73 | * |
| 74 | * Returns TRUE if settings are applied successfully. If raw mode was not |
| 75 | * enabled, this will output a line of escape codes and a new line. |
| 76 | * |
| 77 | * @return bool |
| 78 | */ |
| 79 | public static function disableRawMode(): bool |
| 80 | { |
| 81 | $instance = self::getInstance(); |
| 82 | |
| 83 | // Cleanup |
| 84 | write_stdout(ANSI::CLEAR_SCREEN); |
| 85 | write_stdout(ANSI::RESET_CURSOR); |
| 86 | write_stdout("\n"); // New line, please |
| 87 | |
| 88 | $res = get_ffi()->tcsetattr(C::STDIN_FILENO, C::TCSAFLUSH, FFI::addr($instance->originalTermios)); |
| 89 | |
| 90 | return $res !== -1; |
| 91 | } |
| 92 | |
| 93 | private static function getInstance(): self |
| 94 | { |
| 95 | static $instance; |
| 96 | |
| 97 | if ($instance === NULL) |
| 98 | { |
| 99 | $instance = new self(); |
| 100 | } |
| 101 | |
| 102 | return $instance; |
| 103 | } |
| 104 | } |