Fix CTRL method

.gitignore

@@ -169,5 +169,6 @@ tags
 # End of https://www.gitignore.io/api/vim,emacs,composer,jetbrains+all
 
 kilo.log
+kilo.exception.log
 .phpunit.result.cache
 coverage/

kilo

@@ -31,16 +31,31 @@ return (static function (int $argc, array $argv): int {
 
 	$editor->setStatusMessage('HELP: Ctrl-S = save | Ctrl-Q = quit | Ctrl-F = find');
 
-	// Input Loop
-	while (true)
+	try
 	{
-		$editor->refreshScreen();
-		$char = $editor->processKeypress();
-		if ($char === NULL)
+		// Input Loop
+		while (true)
 		{
-			break;
+			$editor->refreshScreen();
+			$char = $editor->processKeypress();
+			if ($char === NULL)
+			{
+				break;
+			}
 		}
 	}
+	catch (\Throwable $e)
+	{
+		$msg = print_r([
+			'code' => $e->getCode(),
+			'message' => $e->getMessage(),
+			'file' => $e->getFile(),
+			'line' => $e->getLine(),
+			'trace' => $e->getTraceAsString(),
+		], TRUE);
+		file_put_contents('kilo.exception.log', $msg, FILE_APPEND);
+	}
 
 	return 0;
 })($argc, $argv);
+

src/Editor.php

@@ -88,42 +88,38 @@ class Editor {
 	{
 		$c = read_stdin();
 
-		$simpleMap = [
+		$map = [
+			// Unambiguous mappings
 			KeyCode::ARROW_DOWN => KeyType::ARROW_DOWN,
 			KeyCode::ARROW_LEFT => KeyType::ARROW_LEFT,
 			KeyCode::ARROW_RIGHT => KeyType::ARROW_RIGHT,
 			KeyCode::ARROW_UP => KeyType::ARROW_UP,
-			KeyCode::BACKSPACE => KeyType::BACKSPACE,
 			KeyCode::DEL_KEY => KeyType::DEL_KEY,
 			KeyCode::ENTER => KeyType::ENTER,
 			KeyCode::ESCAPE => KeyType::ESCAPE,
 			KeyCode::PAGE_DOWN => KeyType::PAGE_DOWN,
 			KeyCode::PAGE_UP => KeyType::PAGE_UP,
-		];
 
-		$multiMap = [
+			// Backspace
+			KeyCode::CTRL('h') => KeyType::BACKSPACE,
+			KeyCode::BACKSPACE => KeyType::BACKSPACE,
+
+			// Home Key
 			"\eOH" => KeyType::HOME_KEY,
 			"\e[1~" => KeyType::HOME_KEY,
 			"\e[7~" => KeyType::HOME_KEY,
 			ANSI::RESET_CURSOR => KeyType::HOME_KEY,
 
+			// End Key
 			"\eOF" => KeyType::END_KEY,
 			"\e[4~" => KeyType::END_KEY,
 			"\e[8~" => KeyType::END_KEY,
 			"\e[F" => KeyType::END_KEY,
 		];
 
-		if (array_key_exists($c, $simpleMap))
-		{
-			return $simpleMap[$c];
-		}
-
-		if (array_key_exists($c, $multiMap))
-		{
-			return $multiMap[$c];
-		}
-
-		return $c;
+		return (array_key_exists($c, $map))
+			? $map[$c]
+			: $c;
 	}
 
 	protected function selectSyntaxHighlight(): void
@@ -448,18 +444,20 @@ class Editor {
 				$current = 0;
 			}
 
-			$match = strpos($this->rows[$current]->render, $query);
+			$row =& $this->rows[$current];
+
+			$match = strpos($row->render, $query);
 			if ($match !== FALSE)
 			{
 				$lastMatch = $current;
 				$this->cursorY = $current;
-				$this->cursorX = $this->rowRxToCx($this->rows[$current], $match);
+				$this->cursorX = $this->rowRxToCx($row, $match);
 				$this->rowOffset = $this->numRows;
 
 				$savedHlLine = $current;
-				$savedHl = $this->rows[$current]->hl;
+				$savedHl = $row->hl;
 				// Update the highlight array of the relevant row with the 'MATCH' type
-				array_replace_range($this->rows[$current]->hl, $match, strlen($query), Highlight::MATCH);
+				array_replace_range($row->hl, $match, strlen($query), Highlight::MATCH);
 
 				break;
 			}
@@ -710,6 +708,7 @@ class Editor {
 			$this->refreshScreen();
 
 			$c = $this->readKey();
+			$isModifier = in_array($c, $modifiers, TRUE);
 
 			if ($c === KeyType::ESCAPE || ($c === KeyType::ENTER && $buffer !== ''))
 			{
@@ -721,11 +720,11 @@ class Editor {
 				return '';
 			}
 
-			if ($c === KeyType::DEL_KEY  || $c === KeyType::BACKSPACE || KeyType::CTRL('h'))
+			if ($c === KeyType::DEL_KEY || $c === KeyType::BACKSPACE)
 			{
 				$buffer = substr($buffer, 0, -1);
 			}
-			else if (is_ascii($c) && ( ! is_ctrl($c)) && ! in_array($c, $modifiers, TRUE))
+			else if (is_ascii($c) && ( ! (is_ctrl($c) || $isModifier)))
 			{
 				$buffer .= $c;
 			}
@@ -811,7 +810,7 @@ class Editor {
 				$this->insertNewline();
 			break;
 
-			case KeyType::CTRL('q'):
+			case KeyCode::CTRL('q'):
 				if ($this->dirty > 0 && $quit_times > 0)
 				{
 					$this->setStatusMessage('WARNING!!! File has unsaved changes.' .
@@ -824,7 +823,7 @@ class Editor {
 				return NULL;
 			break;
 
-			case KeyType::CTRL('s'):
+			case KeyCode::CTRL('s'):
 				$this->save();
 			break;
 
@@ -839,12 +838,11 @@ class Editor {
 				}
 			break;
 
-			case KeyType::CTRL('f'):
+			case KeyCode::CTRL('f'):
 				$this->find();
 			break;
 
 			case KeyType::BACKSPACE:
-			case KeyType::CTRL('h'):
 			case KeyType::DEL_KEY:
 				if ($c === KeyType::DEL_KEY)
 				{
@@ -865,7 +863,7 @@ class Editor {
 				$this->moveCursor($c);
 			break;
 
-			case KeyType::CTRL('l'):
+			case KeyCode::CTRL('l'):
 			case KeyType::ESCAPE:
 				// Do nothing
 			break;

src/Enum/KeyCode.php

@@ -3,6 +3,7 @@
 namespace Aviat\Kilo\Enum;
 
 use Aviat\Kilo\Traits;
+use function Aviat\Kilo\ctrl_key;
 
 /**
  * 'Raw' input from stdin
@@ -28,4 +29,28 @@ class KeyCode {
 	public const SPACE = ' ';
 	public const TAB = "\t";
 	public const VERTICAL_TAB = "\v";
+
+	/**
+	 * Returns the ascii character for the specified
+	 * ctrl + letter combo
+	 *
+	 * @param string $char
+	 * @return string
+	 */
+	public static function CTRL(string $char): ?string
+	{
+		$char = strtolower($char);
+		$ord = ord($char);
+
+		// a = 0x61
+		// z = 0x7a
+		// So, 0x60 < $ord < 0x7b
+		if ($ord > 0x60 && $ord < 0x7b)
+		{
+			return chr(ctrl_key($char));
+		}
+
+		// Invalid input, not an ascii letter
+		return NULL;
+	}
 }

src/Enum/KeyType.php

@@ -3,7 +3,6 @@
 namespace Aviat\Kilo\Enum;
 
 use Aviat\Kilo\Traits;
-use function Aviat\Kilo\ctrl_key;
 
 /**
  * Constants representing various control keys
@@ -23,28 +22,4 @@ class KeyType {
 	public const HOME_KEY = 'HOME';
 	public const PAGE_DOWN = 'PAGE_DOWN';
 	public const PAGE_UP = 'PAGE_UP';
-
-	/**
-	 * Returns the ascii character for the specified
-	 * ctrl + letter combo
-	 *
-	 * @param string $char
-	 * @return string
-	 */
-	public static function CTRL(string $char): ?string
-	{
-		$char = strtolower($char);
-		$ord = ord($char);
-
-		// a = 0x61
-		// z = 0x7a
-		// So, 0x60 < $ord < 0x7b
-		if ($ord > 0x60 && $ord < 0x7b)
-		{
-			return chr(ctrl_key($char));
-		}
-
-		// Invalid input, not an ascii letter
-		return NULL;
-	}
 }

tests/Enum/KeyCodeTest.php

@@ -2,10 +2,12 @@
 
 namespace Aviat\Kilo\Tests\Enum;
 
-use Aviat\Kilo\Enum\KeyType;
+use function Aviat\Kilo\ctrl_key;
+
+use Aviat\Kilo\Enum\KeyCode;
 use PHPUnit\Framework\TestCase;
 
-class KeyTypeTest extends TestCase {
+class KeyCodeTest extends TestCase {
 	public function testSanityCheck(): void
 	{
 		for ($i = 1; $i < 27; $i++)
@@ -14,21 +16,22 @@ class KeyTypeTest extends TestCase {
 			$ord = $i;
 			$expected = chr($ord);
 
-			$actual = KeyType::CTRL($char);
+			$actual = KeyCode::CTRL($char);
 
-			$this->assertEquals($expected, $actual, "CTRL + '{$char}' should return chr($ord)");
+			$this->assertEquals(ctrl_key($char), $ord, "chr(ctrl_key) !== CTRL");
+			$this->assertEquals($expected, $actual, "CTRL+'{$char}' should return chr($ord)");
 		}
 	}
 
 	public function testNullOnInvalidChar(): void
 	{
-		$this->assertNull(KeyType::CTRL("\t"));
+		$this->assertNull(KeyCode::CTRL("\t"));
 	}
 
 	public function testSameOutputOnUpperOrLower(): void
 	{
-		$lower = KeyType::CTRL('v');
-		$upper = KeyType::CTRL('V');
+		$lower = KeyCode::CTRL('v');
+		$upper = KeyCode::CTRL('V');
 
 		$this->assertEquals($lower, $upper);
 	}