input: allow input.conf bindings to be declared as builtin

This might be helpful if we ever want cascading config files. Also, we
will probably need it if we change the default input.conf bindings, and
want to provide compatibility input.conf files.

2 files changed, 14 insertions, 0 deletions

diff --git a/etc/input.conf b/etc/input.conf
index fa0db45e28..943050eb75 100644
--- a/etc/input.conf
+++ b/etc/input.conf
@@ -39,6 +39,9 @@
 # file, if unedited, doesn't define any bindings).
 # Lines that have a space after the '#' are always ignored as real comments.
 
+# If this is enabled, treat all the following bindings as default.
+#default-bindings start
+
 #MOUSE_BTN0 ignore                      # don't do anything
 #MOUSE_BTN0_DBL cycle fullscreen        # toggle fullscreen on/off
 #MOUSE_BTN2 cycle pause                 # toggle pause on/off
diff --git a/input/input.c b/input/input.c
index 9061f2008a..cc36020af7 100644
--- a/input/input.c
+++ b/input/input.c
@@ -1386,6 +1386,17 @@ static int parse_config(struct input_ctx *ictx, bool builtin, bstr data,
         line = bstr_lstrip(line);
         if (line.len == 0 || bstr_startswith0(line, "#"))
             continue;
+        if (bstr_eatstart0(&line, "default-bindings ")) {
+            bstr orig = line;
+            bstr_split_tok(line, "#", &line, &(bstr){0});
+            line = bstr_strip(line);
+            if (bstr_equals0(line, "start")) {
+                builtin = true;
+            } else {
+                MP_ERR(ictx, "Broken line: %.*s at %s\n", BSTR_P(orig), cur_loc);
+            }
+            continue;
+        }
         struct bstr command;
         // Find the key name starting a line
         struct bstr keyname = bstr_split(line, WHITESPACE, &command);