From 4c7f6340d6b5aebe02bcd61bb8b966c388ff71cc Mon Sep 17 00:00:00 2001
From: Krzosa Karol <krzosa.karol@gmail.com>
Date: Fri, 2 Aug 2024 21:52:44 +0200
Subject: [PATCH] Add Trim trailing whitespace

---
 src/text_editor/commands_window.cpp | 32 ++++++++++++++++++++++++++++-
 src/text_editor/todo.txt            |  3 ++-
 2 files changed, 33 insertions(+), 2 deletions(-)

diff --git a/src/text_editor/commands_window.cpp b/src/text_editor/commands_window.cpp
index f8e6e58..35777b9 100644
--- a/src/text_editor/commands_window.cpp
+++ b/src/text_editor/commands_window.cpp
@@ -85,6 +85,32 @@ void Command_IndentSelectedLines(View *view, bool shift = false) {
     view->update_scroll = false;
 }
 
+void Command_TrimTrailingWhitespace(View *view) {
+    Scratch scratch;
+    Buffer *buffer = GetBuffer(view->active_buffer);
+
+    BeforeEdit(buffer, view->carets);
+    MergeCarets(view);
+
+    Array<Edit> edits = {scratch};
+    for (Int i = 0; i < buffer->line_starts.len; i += 1) {
+        Range range          = GetLineRangeWithoutNL(*buffer, i);
+        Int   whitespace_end = range.max;
+        for (; whitespace_end > range.min; whitespace_end -= 1) {
+            U16  w             = buffer->data[whitespace_end - 1];
+            bool is_whitespace = w == ' ' || w == '\t' || w == '\v' || w == '\r';
+            if (!is_whitespace) break;
+        }
+
+        Range whitespace_range = {whitespace_end, range.max};
+        AddEdit(&edits, whitespace_range, L"");
+    }
+
+    ApplyEdits(buffer, edits);
+    AfterEdit(buffer, &edits, &view->carets, !KILL_SELECTION);
+    view->update_scroll = false;
+}
+
 bool SHIFT_PRESSED = true;
 void Command_MoveCursorsByPageSize(Window *window, int direction, bool shift = false) {
     Assert(direction == DIR_UP || direction == DIR_DOWN);
@@ -420,6 +446,10 @@ void WindowCommand(Event event, Window *window, View *view) {
         search = true;
     }
 
+    if (Ctrl(SDLK_W)) {
+        Command_TrimTrailingWhitespace(view);
+    }
+
     if (Ctrl(SDLK_BACKSPACE)) {
         Command_Delete(view, DIR_LEFT, CTRL_PRESSED);
         search = true;
@@ -572,7 +602,7 @@ void WindowCommand(Event event, Window *window, View *view) {
                 *c       = ChangeFront(*c, p);
             } else if (mouse_in_document && Mouse(LEFT) && event.mouse_double_click) {
                 Caret *c = &view->carets[0];
-                if (InBounds({c->range.min - 1, c->range.max + 1}, p)) {
+                if (InBounds({c->range.min, c->range.max + 1}, p)) {
                     c->range               = EncloseWord(*buffer, p);
                     view->selection_anchor = c->range;
                 }
diff --git a/src/text_editor/todo.txt b/src/text_editor/todo.txt
index 68d133d..7284360 100644
--- a/src/text_editor/todo.txt
+++ b/src/text_editor/todo.txt
@@ -2,7 +2,7 @@
     - scrolling in fullscreen is busted because no space outside of window
     - scrolling when clicking on scroller is busted
     - page up and down should also scroll and leave you in exactly same scroll
-    - Shift + click is not selecting!!!
+    - something about mouse stuff is busted and it randomly does big selections and stuff like that
 
 - underline the word which can be loaded / executed
 - search as a command to execute which is going to be in the title bar
@@ -13,6 +13,7 @@
     - Ctrl + G should select the line number in bar
     - How to make search into bar?
     - command window should close on esacpe but make it more coherent
+    - auto register commands
 
 - simulation:
     - make the editor replayable, store events and then replay