add: syntax highlight & save file popup in pasm editor

Server/Menu.cs

@@ -29,7 +29,7 @@ namespace Server
         public static int localport;
         public static void ServerStart()
         {
-            localip = Dns.GetHostEntry(Dns.GetHostName()).AddressList.FirstOrDefault(ip => ip.AddressFamily == System.Net.Sockets.AddressFamily.InterNetwork).ToString();
+            localip = "192.168.1.20";//Dns.GetHostEntry(Dns.GetHostName()).AddressList.FirstOrDefault(ip => ip.AddressFamily == System.Net.Sockets.AddressFamily.InterNetwork).ToString();
             localport = 4444;
             server = new TcpListener(System.Net.IPAddress.Parse(localip), localport);
             server.Start();

Server/PasmEditor.cs

@@ -14,6 +14,7 @@ using static System.Windows.Forms.VisualStyles.VisualStyleElement;
 using System.Runtime.InteropServices;
 using System.Text.RegularExpressions;
 using System.Xml;
+using static System.Net.Mime.MediaTypeNames;
 
 namespace Server
 {
@@ -21,6 +22,13 @@ namespace Server
     {
         private static string filepath = "";
         private static bool is_executing = false;
+        List<string> instructions = new List<string> {
+            "add", "sub", "mul", "div", "mov",
+            "cmp", "je", "jne", "jb", "jnb",
+            "ja", "jna", "jmp", "ret", "pop",
+            "push", "call", "sqrt", "neg",
+            "and", "xor", "end"
+        };
         public PasmEditor(bool is_from_right_click)
         {
             InitializeComponent();
@@ -28,8 +36,26 @@ namespace Server
             richTextBox1.DragDrop += new DragEventHandler(richTextBox1_DragDrop);
         }
 
+        private bool SpawnSaveDialog()
+        {
+            if (this.Text.Contains("*") || (filepath != "" && this.Text.Contains("*")))
+            {
+                DialogResult messageResult = MessageBox.Show("Save this file?", "Save", MessageBoxButtons.YesNoCancel);
+                if (messageResult == DialogResult.Yes)
+                {
+                    saveToolStripMenuItem_Click(null, null);
+                }
+                else if (messageResult == DialogResult.Cancel)
+                {
+                    return true;
+                }
+            }
+            return false;
+        }
         private void newCTRLNToolStripMenuItem_Click(object sender, EventArgs e)
         {
+            if (SpawnSaveDialog())
+                return;
             richTextBox1.Text = "";
             filepath = "";
             this.Text = "pasm editor - New File";
@@ -37,6 +63,9 @@ namespace Server
 
         private void openToolStripMenuItem_Click(object sender, EventArgs e)
         {
+            if (SpawnSaveDialog())
+                return;
+
             OpenFileDialog openFileDialog = new OpenFileDialog
             {
                 Filter = "PASM source files (*.pasm)|*.pasm",
@@ -85,6 +114,9 @@ namespace Server
 
         private void closeCTRLToolStripMenuItem_Click(object sender, EventArgs e)
         {
+            if (SpawnSaveDialog())
+                return;
+
             richTextBox1.Text = "";
             filepath = "";
             this.Text = "pasm editor - New File";
@@ -184,6 +216,69 @@ namespace Server
             {
                 this.Text += "*";
             }
+
+            // took from https://codingvision.net/c-simple-syntax-highlighting
+            Regex semicolonRegex = new Regex(@";.*");
+            Regex numberRegex = new Regex(@"\b\d+\b");
+            Regex labelsRegex = new Regex(@"(?:\n|\A)\w+:");
+
+            // saving the original caret position + forecolor
+            int originalIndex = richTextBox1.SelectionStart;
+            int originalLength = richTextBox1.SelectionLength;
+            Color originalColor = Color.Black;
+
+            // MANDATORY - focuses a label before highlighting (avoids blinking)
+            splitter1.Focus();
+
+            // removes any previous highlighting (so modified words won't remain highlighted)
+            richTextBox1.SelectionStart = 0;
+            richTextBox1.SelectionLength = richTextBox1.Text.Length;
+            richTextBox1.SelectionColor = originalColor;
+
+            // scanning...
+            foreach(Match match in semicolonRegex.Matches(richTextBox1.Text))
+            {
+                richTextBox1.SelectionStart = match.Index;
+                richTextBox1.SelectionLength = match.Length;
+                richTextBox1.SelectionColor = Color.Green;
+            }
+
+            foreach (Match match in numberRegex.Matches(richTextBox1.Text))
+            {
+                richTextBox1.SelectionStart = match.Index;
+                richTextBox1.SelectionLength = match.Length;
+                if (richTextBox1.SelectionColor == Color.Black)
+                    richTextBox1.SelectionColor = Color.Blue;
+            }
+
+            foreach (Match match in labelsRegex.Matches(richTextBox1.Text))
+            {
+                richTextBox1.SelectionStart = match.Index;
+                richTextBox1.SelectionLength = match.Length;
+                if (richTextBox1.SelectionColor == Color.Black)
+                    richTextBox1.SelectionColor = Color.DarkOrange;
+            }
+
+            foreach (string ins in instructions)
+            {
+                string pattern = @"\b" + Regex.Escape(ins) + @"\b";
+                Regex regex = new Regex(pattern);
+
+                foreach (Match match in regex.Matches(richTextBox1.Text))
+                {
+                    richTextBox1.SelectionStart = match.Index;
+                    richTextBox1.SelectionLength = match.Length;
+                    if (richTextBox1.SelectionColor == Color.Black)
+                        richTextBox1.SelectionColor = Color.DarkRed;
+                }
+            }
+
+            // restoring the original colors, for further writing
+            richTextBox1.SelectionStart = originalIndex;
+            richTextBox1.SelectionLength = originalLength;
+            richTextBox1.SelectionColor = originalColor;
+
+            richTextBox1.Focus();
         }
     }
 }