From 04241ab731432f9d13c3cfa160c39f98f1d36ba2 Mon Sep 17 00:00:00 2001
From: rcombs <rcombs@rcombs.me>
Date: Fri, 16 Dec 2022 15:01:54 -0600
Subject: [PATCH] player/command: add "del" command

---
 DOCS/man/input.rst |  3 +++
 player/command.c   | 24 ++++++++++++++++++++++++
 2 files changed, 27 insertions(+)

diff --git a/DOCS/man/input.rst b/DOCS/man/input.rst
index e11beae92c..280e30cc8c 100644
--- a/DOCS/man/input.rst
+++ b/DOCS/man/input.rst
@@ -334,6 +334,9 @@ Remember to quote string arguments in input.conf (see `Flat command syntax`_).
 ``set <name> <value>``
     Set the given property or option to the given value.
 
+``del <name>``
+    Delete the given property. Most properties cannot be deleted.
+
 ``add <name> [<value>]``
     Add the given value to the property or option. On overflow or underflow,
     clamp the property to the maximum. If ``<value>`` is omitted, assume ``1``.
diff --git a/player/command.c b/player/command.c
index c3a6729805..f6a0c9d33f 100644
--- a/player/command.c
+++ b/player/command.c
@@ -4882,6 +4882,29 @@ static void cmd_set(void *p)
                         M_PROPERTY_SET_STRING, cmd->args[1].v.s);
 }
 
+static void cmd_del(void *p)
+{
+    struct mp_cmd_ctx *cmd = p;
+    struct MPContext *mpctx = cmd->mpctx;
+    const char *name = cmd->args[0].v.s;
+    int osdl = cmd->msg_osd ? 1 : OSD_LEVEL_INVISIBLE;
+    int osd_duration = mpctx->opts->osd_duration;
+
+    int r = mp_property_do(name, M_PROPERTY_DELETE, NULL, mpctx);
+
+    if (r == M_PROPERTY_OK) {
+        set_osd_msg(mpctx, osdl, osd_duration, "Deleted property: '%s'", name);
+        cmd->success = true;
+    } else if (r == M_PROPERTY_UNKNOWN) {
+        set_osd_msg(mpctx, osdl, osd_duration, "Unknown property: '%s'", name);
+        cmd->success = false;
+    } else if (r <= 0) {
+        set_osd_msg(mpctx, osdl, osd_duration, "Failed to set property '%s'",
+                    name);
+        cmd->success = false;
+    }
+}
+
 static void cmd_change_list(void *p)
 {
     struct mp_cmd_ctx *cmd = p;
@@ -6310,6 +6333,7 @@ const struct mp_cmd_def mp_cmds[] = {
     },
 
     { "set", cmd_set, {{"name", OPT_STRING(v.s)}, {"value", OPT_STRING(v.s)}}},
+    { "del", cmd_del, {{"name", OPT_STRING(v.s)}}},
     { "change-list", cmd_change_list, { {"name", OPT_STRING(v.s)},
                                         {"operation", OPT_STRING(v.s)},
                                         {"value", OPT_STRING(v.s)} }},