From d6b0c28b252a1312aea692f89a1ff0300c7ec9c9 Mon Sep 17 00:00:00 2001
From: Martin Willi <martin@revosec.ch>
Date: Mon, 22 Apr 2013 11:20:58 +0200
Subject: charon-cmd: support multi-line help text for each option in usage

---
 src/charon-cmd/charon-cmd.c      | 10 +++++++++-
 src/charon-cmd/cmd/cmd_options.h |  4 +++-
 2 files changed, 12 insertions(+), 2 deletions(-)

(limited to 'src')

diff --git a/src/charon-cmd/charon-cmd.c b/src/charon-cmd/charon-cmd.c
index a493b17c7..5f27255a9 100644
--- a/src/charon-cmd/charon-cmd.c
+++ b/src/charon-cmd/charon-cmd.c
@@ -199,7 +199,7 @@ static void segv_handler(int signal)
  */
 static void usage(FILE *out, char *msg, char *binary)
 {
-	int i, pre, post, padto = 0, spacing = 2;
+	int i, line, pre, post, padto = 0, spacing = 2;
 
 	for (i = 0; i < CMD_OPT_COUNT; i++)
 	{
@@ -235,6 +235,14 @@ static void usage(FILE *out, char *msg, char *binary)
 			pre, cmd_options[i].arg, post,
 			padto - strlen(cmd_options[i].name) - strlen(cmd_options[i].arg), "",
 			cmd_options[i].desc);
+		for (line = 0; line < countof(cmd_options[i].lines); line++)
+		{
+			if (cmd_options[i].lines[line])
+			{
+				fprintf(out, "%-*s        %s\n",
+						padto, "", cmd_options[i].lines[line]);
+			}
+		}
 	}
 }
 
diff --git a/src/charon-cmd/cmd/cmd_options.h b/src/charon-cmd/cmd/cmd_options.h
index 3756225bf..6fa3fade4 100644
--- a/src/charon-cmd/cmd/cmd_options.h
+++ b/src/charon-cmd/cmd/cmd_options.h
@@ -52,8 +52,10 @@ struct cmd_option_t {
 	int has_arg;
 	/** decription of argument */
 	const char *arg;
-	/** description to option */
+	/** short description to option */
 	const char *desc;
+	/** additional description lines */
+	const char *lines[8];
 };
 
 /**
-- 
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