[gtksourceview/wip/chergert/vim] add upcase/downcase commands

[Christian Hergert <chergert src gnome org>]

commit 17df0b67ebe520343779e1823ea9faa1e36b9961
Author: Christian Hergert <chergert redhat com>
Date:   Tue Nov 2 13:51:01 2021 -0700

    add upcase/downcase commands
    
    these are the name they have in vim (which is what?) so we don't use the
    : prefix on them.

 gtksourceview/vim/gtk-source-vim-command.c | 35 ++++++++++++++++++++++++++++++
 1 file changed, 35 insertions(+)
---
diff --git a/gtksourceview/vim/gtk-source-vim-command.c b/gtksourceview/vim/gtk-source-vim-command.c
index 1abaa222..6b133445 100644
--- a/gtksourceview/vim/gtk-source-vim-command.c
+++ b/gtksourceview/vim/gtk-source-vim-command.c
@@ -280,6 +280,39 @@ gtk_source_vim_command_toggle_case (GtkSourceVimCommand *self)
        self->ignore_mark = TRUE;
 }
 
+static void
+gtk_source_vim_command_change_case (GtkSourceVimCommand     *self,
+                                    GtkSourceChangeCaseType  case_type)
+{
+       GtkSourceBuffer *buffer;
+       GtkTextIter iter;
+       GtkTextIter selection;
+
+       buffer = gtk_source_vim_state_get_buffer (GTK_SOURCE_VIM_STATE (self), &iter, &selection);
+
+       gtk_text_iter_order (&iter, &selection);
+
+       gtk_source_vim_state_begin_user_action (GTK_SOURCE_VIM_STATE (self));
+       gtk_source_buffer_change_case (buffer, case_type, &iter, &selection);
+       gtk_source_vim_state_end_user_action (GTK_SOURCE_VIM_STATE (self));
+
+       gtk_source_vim_state_select (GTK_SOURCE_VIM_STATE (self), &iter, &iter);
+
+       self->ignore_mark = TRUE;
+}
+
+static void
+gtk_source_vim_command_upcase (GtkSourceVimCommand *self)
+{
+       return gtk_source_vim_command_change_case (self, GTK_SOURCE_CHANGE_CASE_UPPER);
+}
+
+static void
+gtk_source_vim_command_downcase (GtkSourceVimCommand *self)
+{
+       return gtk_source_vim_command_change_case (self, GTK_SOURCE_CHANGE_CASE_LOWER);
+}
+
 static void
 gtk_source_vim_command_undo (GtkSourceVimCommand *self)
 {
@@ -519,6 +552,8 @@ gtk_source_vim_command_class_init (GtkSourceVimCommandClass *klass)
        ADD_COMMAND ("paste-after",    gtk_source_vim_command_paste_after);
        ADD_COMMAND ("paste-before",   gtk_source_vim_command_paste_before);
        ADD_COMMAND ("toggle-case",    gtk_source_vim_command_toggle_case);
+       ADD_COMMAND ("upcase",         gtk_source_vim_command_upcase);
+       ADD_COMMAND ("downcase",       gtk_source_vim_command_downcase);
 #undef ADD_COMMAND
 }