Complete step 164

kilo

@@ -12,6 +12,7 @@ define('KILO_QUIT_TIMES', 3);
 
 // Set up autoloading
 require_once __DIR__ . '/src/functions.php';
+require_once __DIR__ . '/src/hldb.php';
 spl_autoload_register(static function ($class) {
 	$parts = explode('\\', $class);
 	$file = __DIR__ . DIRECTORY_SEPARATOR . 'src' . DIRECTORY_SEPARATOR . $parts[1] . '.php';

src/Editor.php

@@ -23,11 +23,13 @@ class Editor {
 	 */
 	protected array $rows = [];
 
-	protected int $dirty = 0;
+	public int $dirty = 0;
 	protected string $filename = '';
 	protected string $statusMsg = '';
 	protected int $statusMsgTime;
 
+	public ?Syntax $syntax;
+
 	public static function new(): Editor
 	{
 		return new self();
@@ -97,6 +99,42 @@ class Editor {
 		}
 	}
 
+	protected function selectSyntaxHighlight(): void
+	{
+		$this->syntax = NULL;
+		if (empty($this->filename))
+		{
+			return;
+		}
+
+		// In PHP, `strchr` and `strstr` are the same function
+		$ext = (string)strstr($this->filename, '.');
+
+		foreach (get_hldb() as $syntax)
+		{
+			$i = 0;
+			while ($syntax->filematch[$i])
+			{
+				$is_ext = ($syntax->filematch[$i][0] === '.');
+				if (
+					($is_ext && ( ! strcmp($ext, $syntax->filematch[$i]))) ||
+					(( ! $is_ext) && strpos($this->filename, $syntax->filematch{$i}) !== FALSE)
+				) {
+					$this->syntax = $syntax;
+
+					for ($i = 0; $i < $this->numRows; $i++)
+					{
+						$this->rows[$i]->update();
+					}
+
+					return;
+				}
+
+				$i++;
+			}
+		}
+	}
+
 	// ------------------------------------------------------------------------
 	// ! Row Operations
 	// ------------------------------------------------------------------------
@@ -143,7 +181,7 @@ class Editor {
 			return;
 		}
 
-		$row = Row::new($s);
+		$row = Row::new($this, $s);
 
 		if ($at === $this->numRows)
 		{
@@ -179,38 +217,6 @@ class Editor {
 		$this->dirty++;
 	}
 
-	protected function rowInsertChar(Row $row, int $at, string $c): void
-	{
-		if ($at < 0 || $at > $row->size)
-		{
-			$at = $row->size;
-		}
-
-		// Safely insert into arbitrary position in the existing string
-		$row->chars = substr($row->chars, 0, $at) . $c . substr($row->chars, $at);
-		$row->update();
-		$this->dirty++;
-	}
-
-	protected function rowAppendString(Row $row, string $s): void
-	{
-		$row->chars .= $s;
-		$row->update();
-		$this->dirty++;
-	}
-
-	protected function rowDeleteChar(Row $row, int $at): void
-	{
-		if ($at < 0 || $at >= $row->size)
-		{
-			return;
-		}
-
-		$row->chars = substr_replace($row->chars, '', $at, 1);
-		$row->update();
-		$this->dirty++;
-	}
-
 	// ------------------------------------------------------------------------
 	// ! Editor Operations
 	// ------------------------------------------------------------------------
@@ -221,7 +227,7 @@ class Editor {
 		{
 			$this->insertRow($this->numRows, '');
 		}
-		$this->rowInsertChar($this->rows[$this->cursorY], $this->cursorX, $c);
+		$this->rows[$this->cursorY]->insertChar($this->cursorX, $c);
 		$this->cursorX++;
 	}
 
@@ -257,13 +263,13 @@ class Editor {
 		$row = $this->rows[$this->cursorY];
 		if ($this->cursorX > 0)
 		{
-			$this->rowDeleteChar($row, $this->cursorX - 1);
+			$row->deleteChar($this->cursorX - 1);
 			$this->cursorX--;
 		}
 		else
 		{
 			$this->cursorX = $this->rows[$this->cursorY - 1]->size;
-			$this->rowAppendString($this->rows[$this->cursorY -1], $row->chars);
+			$this->rows[$this->cursorY -1]->appendString($row->chars);
 			$this->deleteRow($this->cursorY);
 			$this->cursorY--;
 		}
@@ -289,12 +295,7 @@ class Editor {
 		// Copy filename for display
 		$this->filename = $filename;
 
-		// Determine the full path to the file
-		/* $baseFile = basename($filename);
-		$basePath = str_replace($baseFile, '', $filename);
-		$path = (is_dir($basePath)) ? $basePath : getcwd();
-
-		$fullname = $path . '/' . $baseFile; */
+		$this->selectSyntaxHighlight();
 
 		// #TODO gracefully handle issues with loading a file
 		$handle = fopen($filename, 'rb');
@@ -302,7 +303,7 @@ class Editor {
 		{
 			write_stdout("\x1b[2J"); // Clear the screen
 			write_stdout("\x1b[H"); // Reposition cursor to top-left
-			disableRawMode();
+			disable_raw_mode();
 			print_r(error_get_last());
 			die();
 		}
@@ -330,6 +331,7 @@ class Editor {
 			}
 
 			$this->filename = $newFilename;
+			$this->selectSyntaxHighlight();
 		}
 
 		$contents = $this->rowsToString();
@@ -565,9 +567,10 @@ class Editor {
 		$this->ab .= "\x1b[7m";
 
 		$statusFilename = $this->filename !== '' ? $this->filename : '[No Name]';
+		$syntaxType = ($this->syntax !== NULL) ? $this->syntax->filetype : 'no ft';
 		$isDirty = ($this->dirty > 0) ? '(modified)' : '';
 		$status = sprintf('%.20s - %d lines %s', $statusFilename, $this->numRows, $isDirty);
-		$rstatus = sprintf('%d/%d', $this->cursorY + 1, $this->numRows);
+		$rstatus = sprintf('%s | %d/%d', $syntaxType, $this->cursorY + 1, $this->numRows);
 		$len = strlen($status);
 		$rlen = strlen($rstatus);
 		if ($len > $this->screenCols)

src/Row.php

@@ -12,17 +12,21 @@ class Row {
 	public string $chars = '';
 	public string $render = '';
 
+	// This feels dirty...
+	private Editor $parent;
+
 	public array $hl = [];
 
-	public static function new(string $chars): self
+	public static function new(Editor $parent, string $chars): self
 	{
-		return new self($chars);
+		$self = new self();
+		$self->chars = $chars;
+		$self->parent = $parent;
+
+		return $self;
 	}
 
-	private function __construct($chars)
-	{
-		$this->chars = $chars;
-	}
+	private function __construct() {}
 
 	public function __get(string $name)
 	{
@@ -44,6 +48,41 @@ class Row {
 		return $this->chars . "\n";
 	}
 
+	public function insertChar(int $at, string $c): void
+	{
+		if ($at < 0 || $at > $this->size)
+		{
+			$at = $this->size;
+		}
+
+		// Safely insert into arbitrary position in the existing string
+		$this->chars = substr($this->chars, 0, $at) . $c . substr($this->chars, $at);
+		$this->update();
+
+		$this->parent->dirty++;
+	}
+
+	public function appendString(string $s): void
+	{
+		$this->chars .= $s;
+		$this->update();
+
+		$this->parent->dirty++;
+	}
+
+	public function deleteChar(int $at): void
+	{
+		if ($at < 0 || $at >= $this->size)
+		{
+			return;
+		}
+
+		$this->chars = substr_replace($this->chars, '', $at, 1);
+		$this->update();
+
+		$this->parent->dirty++;
+	}
+
 	public function update(): void
 	{
 		$idx = 0;
@@ -84,6 +123,13 @@ class Row {
 			$char = $this->render[$i];
 			$prevHl = ($i > 0) ? $this->hl[$i - 1] : Highlight::NORMAL;
 
+			if ($this->parent->syntax === NULL)
+			{
+				return;
+			}
+
+			if ($this->parent->syntax->flags & Syntax::HIGHLIGHT_NUMBERS)
+			{
 				// Numbers, including decimal points
 				if (
 					($char === '.' && $prevHl === Highlight::NUMBER) ||
@@ -95,6 +141,7 @@ class Row {
 					$prevSep = FALSE;
 					continue;
 				}
+			}
 
 			$prevSep = is_separator($char);
 			$i++;

src/hldb.php

@@ -0,0 +1,21 @@
+<?php declare(strict_types=1);
+
+namespace Kilo;
+
+function get_hldb(): array
+{
+	static $db = [];
+
+	if (count($db) === 0)
+	{
+		$db = [
+			Syntax::new(
+				'c',
+				['.c', '.h', '.cpp'],
+				Syntax::HIGHLIGHT_NUMBERS,
+			),
+		];
+	}
+
+	return $db;
+}