From: Takashi Sakamoto <o-takashi@sakamocchi.jp>
Date: Fri, 7 Dec 2018 09:41:02 +0000 (+0900)
Subject: axfer: print help text of command entry
X-Git-Tag: v1.1.8~16
X-Git-Url: https://git.alsa-project.org/?a=commitdiff_plain;h=a4782feac32e01a5bd10bdb266a891a920715716;p=alsa-utils.git

axfer: print help text of command entry

This commit adds help text of command entry. This is printed when
help subcommand is given, or a valid subcommand or a valid direction
are not given.

Unfortunately, at present, execution of alias (aplay/arecord) with help
options prints the added help text. It should print help options in
transfer subcommand. This bug will fixed in future commits.

Signed-off-by: Takashi Sakamoto <o-takashi@sakamocchi.jp>
Signed-off-by: Takashi Iwai <tiwai@suse.de>
---

diff --git a/axfer/main.c b/axfer/main.c
index f9ee44e..21d3b4a 100644
--- a/axfer/main.c
+++ b/axfer/main.c
@@ -67,7 +67,17 @@ static void print_version(const char *const cmdname)
 
 static void print_help(void)
 {
-	printf("help\n");
+	printf(
+"Usage:\n"
+"  axfer transfer DIRECTION OPTIONS\n"
+"  axfer list DIRECTION OPTIONS\n"
+"  axfer version\n"
+"  axfer help\n"
+"\n"
+"  where:\n"
+"    DIRECTION = capture | playback\n"
+"    OPTIONS = -h | --help | (subcommand specific)\n"
+	);
 }
 
 // Backward compatibility to aplay(1).