vis: add insfrastructure to support global key mappings

Except for insert/replace mode keys get translated before any
key bindings are evaluated.

This is useful for non-english/latin keyboard layouts.

1 files changed, 12 insertions, 0 deletions

diff --git a/vis.c b/vis.c
index 848180f..35516de 100644
--- a/vis.c
+++ b/vis.c
@@ -341,6 +341,8 @@ Vis *vis_new(Ui *ui, VisEvent *event) {
 		goto err;
 	if (!(vis->search_file = file_new_internal(vis, NULL)))
 		goto err;
+	if (!(vis->keymap = map_new()))
+		goto err;
 	vis->mode_prev = vis->mode = &vis_modes[VIS_MODE_NORMAL];
 	vis->event = event;
 	if (event && event->vis_start)
@@ -371,6 +373,7 @@ void vis_free(Vis *vis) {
 	map_free(vis->cmds);
 	map_free(vis->options);
 	map_free(vis->actions);
+	map_free(vis->keymap);
 	buffer_release(&vis->input_queue);
 	for (int i = 0; i < VIS_MODE_INVALID; i++)
 		map_free(vis_modes[i].bindings);
@@ -422,6 +425,10 @@ bool vis_action_register(Vis *vis, const KeyAction *action) {
 	return map_put(vis->actions, action->name, action);
 }
 
+bool vis_keymap_add(Vis *vis, const char *key, const char *mapping) {
+	return map_put(vis->keymap, key, mapping);
+}
+
 static void window_jumplist_add(Win *win, size_t pos) {
 	Mark mark = text_mark_set(win->file->text, pos);
 	if (mark && win->jumplist)
@@ -763,6 +770,11 @@ static const char *getkey(Vis *vis) {
 	if (!key)
 		return NULL;
 	vis_info_hide(vis);
+	if (!vis->mode->input) {
+		const char *mapped = map_get(vis->keymap, key);
+		if (mapped)
+			return mapped;
+	}
 	return key;
 }