Misc tweaks, add Javascript highlighting

src/editor.rs

@@ -133,7 +133,7 @@ pub struct Editor {
 
 /// Keycode mapping enum
 #[derive(Copy, Clone, Debug, PartialEq)]
-pub enum KeyCode<T> {
+pub enum KeyCode<T = char> {
     Enter,
     Escape,
     Backspace,
@@ -437,7 +437,6 @@ impl Editor {
         let row = &mut rows[index];
         let render_len = row.render.len();
 
-
         // Reset the highlighting of the row
         row.highlight = vec![Highlight::Normal; render_len];
 
@@ -477,11 +476,7 @@ impl Editor {
                 let range = get_slice_range(i, scs.len(), render_len);
                 if &row.render[range] == scs {
                     // Pretty simple, highlight from the match to the end of the line
-                    highlight_range(
+                    highlight_range(&mut row.highlight, i..render_len, Highlight::LineComment);
-                        &mut row.highlight,
-                        i..render_len,
-                        Highlight::LineComment,
-                    );
                     break;
                 }
             }
@@ -634,14 +629,14 @@ impl Editor {
         use Highlight::*;
 
         match syntax_type {
-            Keyword1 => 33,    // Yellow
+            Keyword1 => 33,         // Yellow
-            Keyword2 => 32,    // Green
+            Keyword2 => 32,         // Green
-            LineComment => 36, // Cyan
+            LineComment => 36,      // Cyan
-            MultiLineComment => 34, // Blue
+            MultiLineComment => 90, // Bright Black
-            Normal => 37,   // White
+            Normal => 37,           // White
-            Number => 31,      // Red
+            Number => 31,           // Red
-            SearchMatch => 7, // Reverse!
+            SearchMatch => 7,       // Reverse!
-            String => 35,      // Magenta
+            String => 35,           // Magenta
         }
     }
 
@@ -1069,7 +1064,7 @@ impl Editor {
         // Move cursor to state position
         let y = self.cursor_y - self.row_offset + 1;
         let x = self.render_x - self.col_offset + 1;
-        let cursor_code = format!("\x1b[{y};{x}H", y = y, x = x);
+        let cursor_code = format!("\x1b[{y};{x}f", y = y, x = x);
         self.append_out(&cursor_code);
 
         // Show cursor
@@ -1438,7 +1433,7 @@ impl Editor {
 fn get_syntax_db() -> Vec<Syntax> {
     vec![
         Syntax::new(
-            "c",
+            "C/C++",
             vec![".c", ".h", ".cpp"],
             vec![
                 "continue", "typedef", "switch", "return", "static", "while", "break", "struct",
@@ -1454,7 +1449,7 @@ fn get_syntax_db() -> Vec<Syntax> {
             SyntaxFlags::HIGHLIGHT_NUMBERS | SyntaxFlags::HIGHLIGHT_STRINGS,
         ),
         Syntax::new(
-            "rust",
+            "Rust",
             vec![".rs"],
             vec![
                 "continue", "return", "static", "struct", "unsafe", "break", "const", "crate",
@@ -1526,6 +1521,52 @@ fn get_syntax_db() -> Vec<Syntax> {
             "*/",
             SyntaxFlags::HIGHLIGHT_NUMBERS | SyntaxFlags::HIGHLIGHT_STRINGS,
         ),
+        Syntax::new(
+            "JavaScript",
+            vec![".js", ".mjs", ".jsx", ".ts", ".tsx"],
+            vec![
+                "instanceof",
+                "continue",
+                "debugger",
+                "function",
+                "default",
+                "extends",
+                "finally",
+                "delete",
+                "export",
+                "import",
+                "return",
+                "switch",
+                "typeof",
+                "break",
+                "catch",
+                "class",
+                "const",
+                "super",
+                "throw",
+                "while",
+                "yield",
+                "case",
+                "else",
+                "this",
+                "void",
+                "with",
+                "from",
+                "for",
+                "new",
+                "try",
+                "var",
+                "do",
+                "if",
+                "in",
+                "as",
+            ],
+            vec!["=>", "Number", "String", "Object", "Math", "JSON", "Boolean"],
+            "//",
+            "/*",
+            "*/",
+            SyntaxFlags::HIGHLIGHT_NUMBERS | SyntaxFlags::HIGHLIGHT_STRINGS,
+        ),
     ]
 }
 
@@ -1592,8 +1633,7 @@ where
     match res {
         Ok(value) => value,
         Err(e) => {
-            print!("\x1b[2J");
+            print!("\x1bc");
-            print!("\x1b[H");
             disable_raw_mode();
             panic!("{:?}", e);
         }
@@ -1623,8 +1663,13 @@ mod tests {
         }
 
         // Check each whitespace character
-        for ch in " \t\n\x0c".chars() {
+        for ch in " \t\n\r\x0c".chars() {
-            assert_eq!(is_separator(ch), true, "Character {:#} should be a separator", ch as u8);
+            assert_eq!(
+                is_separator(ch),
+                true,
+                "Character {:#} should be a separator",
+                ch as u8
+            );
         }
 
         // Letters are not separators!

src/main.rs

@@ -4,8 +4,8 @@ extern crate bitflags;
 #[macro_use]
 extern crate lazy_static;
 
-mod editor;
+pub mod editor;
-mod terminal_helpers;
+pub mod terminal_helpers;
 
 use crate::editor::Editor;
 use crate::terminal_helpers::*;

src/terminal_helpers.rs

@@ -66,6 +66,10 @@ pub fn disable_raw_mode() {
     let mutex = Arc::clone(&super::ORIGINAL_TERMIOS);
     let termios = mutex.lock().unwrap();
 
+    // First attempt to reset terminal settings via a terminal code
+    print!("\x1bc");
+
+    // Restore previous terminal settings
     termios::tcsetattr(STDIN_FILENO, termios::SetArg::TCSAFLUSH, &termios).unwrap();
 }