From: Arnaldo Carvalho de Melo <acme@redhat.com>
Date: Tue, 8 Apr 2025 20:17:10 +0000 (-0300)
Subject: perf ui browser: Add key_name() helper
X-Git-Tag: v6.16-rc1~57^2~200
X-Git-Url: http://git.ipfire.org/?a=commitdiff_plain;h=f16552393191f0e0801d8640f2030fe2103912b9;p=thirdparty%2Flinux.git

perf ui browser: Add key_name() helper

We'll use it to show unhandled keys in the various TUI browsers.

Suggested-by: Ingo Molnar <mingo@kernel.org>
Tested-by: Ingo Molnar <mingo@kernel.org>
Cc: Adrian Hunter <adrian.hunter@intel.com>
Cc: Ian Rogers <irogers@google.com>
Cc: James Clark <james.clark@linaro.org>
Cc: Jiri Olsa <jolsa@kernel.org>
Cc: Kan Liang <kan.liang@linux.intel.com>
Cc: Namhyung Kim <namhyung@kernel.org>
Link: https://lore.kernel.org/r/Z_TYux5fUg2pW-pF@gmail.com
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
---

diff --git a/tools/perf/ui/Build b/tools/perf/ui/Build
index d2ecd92906009..6005f813c9e39 100644
--- a/tools/perf/ui/Build
+++ b/tools/perf/ui/Build
@@ -8,5 +8,6 @@ perf-ui-y += stdio/hist.o
 CFLAGS_setup.o += -DLIBDIR="BUILD_STR($(LIBDIR))"
 
 perf-ui-$(CONFIG_SLANG) += browser.o
+perf-ui-$(CONFIG_SLANG) += keysyms.o
 perf-ui-$(CONFIG_SLANG) += browsers/
 perf-ui-$(CONFIG_SLANG) += tui/
diff --git a/tools/perf/ui/keysyms.c b/tools/perf/ui/keysyms.c
new file mode 100644
index 0000000000000..b64564b07f2f7
--- /dev/null
+++ b/tools/perf/ui/keysyms.c
@@ -0,0 +1,44 @@
+/* SPDX-License-Identifier: GPL-2.0 */
+
+#include "keysyms.h"
+#include <linux/ctype.h>
+#include <linux/kernel.h>
+
+const char *key_name(int key, char *bf, size_t size)
+{
+	if (isprint(key)) {
+		scnprintf(bf, size, "%c", key); 
+	} else if (key < 32) {
+		scnprintf(bf, size, "Ctrl+%c", key + '@'); 
+	} else {
+		const char *name = NULL;
+
+		switch (key) {
+		case K_DOWN:	name = "Down";	    break;
+		case K_END:	name = "End";	    break;
+		case K_ENTER:	name = "Enter";	    break;
+		case K_ESC:	name = "ESC";	    break;
+		case K_F1:	name = "F1";	    break;
+		case K_HOME:	name = "Home";	    break;
+		case K_LEFT:	name = "Left";	    break;
+		case K_PGDN:	name = "PgDown";    break;
+		case K_PGUP:	name = "PgUp";	    break;
+		case K_RIGHT:	name = "Right";	    break;
+		case K_TAB:	name = "Tab";	    break;
+		case K_UNTAB:	name = "Untab";	    break;
+		case K_UP:	name = "Up";	    break;
+		case K_BKSPC:	name = "Backspace"; break;
+		case K_DEL:	name = "Del";	    break;
+		default:
+			if (key >= SL_KEY_F(1) && key <= SL_KEY_F(63))
+				scnprintf(bf, size, "F%d", key - SL_KEY_F(0));
+			else
+				scnprintf(bf, size, "Unknown (%d)", key);
+		}
+
+		if (name)
+			scnprintf(bf, size, "%s", name);
+	}
+
+	return bf;
+}
diff --git a/tools/perf/ui/keysyms.h b/tools/perf/ui/keysyms.h
index 04cc4e5c031fa..969060edc3624 100644
--- a/tools/perf/ui/keysyms.h
+++ b/tools/perf/ui/keysyms.h
@@ -27,4 +27,6 @@
 #define K_SWITCH_INPUT_DATA -4
 #define K_RELOAD -5
 
+const char *key_name(int key, char *bf, size_t size);
+
 #endif /* _PERF_KEYSYMS_H_ */