Better Rename

src/text_editor/commands.cpp

@@ -709,7 +709,48 @@ void AddHook(Array<CommandData> *arr, String name, String binding, Function *fun
     Add(arr, n);
 }
 
-// @todo: rename to temp buffer? but there is already a thing like that...
+void Coro_Rename(mco_coro *co) {
+    BSet main = GetBSet(LastActiveLayoutWindowID);
+    Buffer *buffer = main.buffer;
+    JumpTempBuffer(&main);
+    NextActiveWindowID = main.window->id;
+    RawAppendf(main.buffer, "Rename and click enter to submit: [%S]\n        :Rename :Cancel", buffer->name);
+
+    main.view->carets[0] = FindNext(main.buffer, u"]", MakeCaret(0));
+    main.view->carets[0].range.max = main.view->carets[0].range.min;
+    AddHook(&main.view->hooks, "Rename", "enter", [](){BSet active = GetBSet(ActiveWindowID); active.view->hook_cmd = "Rename";});
+    AddHook(&main.view->hooks, "Cancel", "escape", [](){BSet active = GetBSet(ActiveWindowID); active.view->hook_cmd = "Cancel";});
+    String result = "Cancel";
+    for (;;) {
+        if (main.window->active_view != main.view->id || (main.window->id != LastActiveLayoutWindowID && main.window->id != ActiveWindowID) || main.window->close) {
+            break;
+        }
+
+        if (main.view->hook_cmd != "") {
+            result = main.view->hook_cmd;
+            break;
+        }
+
+        CoYield(co);
+    }
+    Close(main.buffer->id);
+
+    if (result == "Rename") {
+        Caret a = FindNext(main.buffer, u"[", MakeCaret(-1));
+        Caret b = FindNext(main.buffer, u"]", MakeCaret(-1));
+        if (a.range.min == -1 || b.range.max == -1) {
+            ReportErrorf("Failed to extract the name for the Rename operation from the buffer");
+            return;
+        }
+        String16 string16 = GetString(main.buffer, {a.range.max + 1, b.range.max});
+        String string = ToString(CoCurr->arena, string16);
+        buffer->name = Intern(&GlobalInternTable, string);
+    }
+}
+void Command_Rename() {
+    CoAdd(Coro_Rename);
+} RegisterCommand(Command_Rename, "");
+
 String Coro_YesNoCancel(mco_coro *co, BSet main, String question) {
     JumpTempBuffer(&main);
     NextActiveWindowID = main.window->id;