Open and navigate directories

src/text_editor/management.cpp

@@ -172,9 +172,13 @@ String GetCurrentBufferName() {
 }
 
 String GetCurrentBufferDir() {
-    String buffer_name = GetCurrentBufferName();
-    String name        = ChopLastSlash(buffer_name);
-    if (name.len == buffer_name.len) return {};
+    Window *window = GetWindow(ActiveWindow);
+    if (window->is_title_bar) {
+        window = GetWindow(window->title_bar_window);
+    }
+    View   *view   = GetView(window->active_view);
+    Buffer *buffer = GetBuffer(view->active_buffer);
+    String  name   = buffer->is_directory ? buffer->name : ChopLastSlash(buffer->name);
     return name;
 }
 
@@ -196,10 +200,22 @@ Buffer *BufferOpenFile(String path) {
     }
 
     if (!FileExists(path)) {
-        path   = Copy(sys_allocator, path);
+        path   = GetAbsolutePath(sys_allocator, path);
         buffer = CreateBuffer(sys_allocator, path);
+    } else if (IsDir(path)) {
+        path                 = GetAbsolutePath(sys_allocator, path);
+        buffer               = CreateBuffer(sys_allocator, path, 4096 * 2);
+        buffer->is_directory = true;
+
+        int i = 1;
+        for (FileIter it = IterateFiles(scratch, path); IsValid(it); Advance(&it)) {
+            Appendf(buffer, "%.*s", FmtString(it.filename));
+            if ((i % 8) == 0) Append(buffer, L"\n");
+            else Append(buffer, L"  ");
+            i += 1;
+        }
     } else {
-        path          = Copy(sys_allocator, path);
+        path          = GetAbsolutePath(sys_allocator, path);
         String string = ReadFile(scratch, path);
         buffer        = CreateBuffer(sys_allocator, path, string.len * 4);
 

src/text_editor/text_editor.h

@@ -39,6 +39,7 @@ struct Buffer {
     int                 edit_phase;
     bool                no_history;
     bool                dirty;
+    bool                is_directory;
 };
 
 struct View {

src/text_editor/todo.txt

@@ -1,6 +1,4 @@
 - search as a command to execute which is going to be in the title bar
-- each buffer needs a directory even the special ones: C:\a\b\c\+errors?
-- open directories - resulting in buffer with dir listing and proper buffer name
 
 - clean \r\n into \n on trim and load
 - search backwards