From 6f436fe1021f801f29cee16af7f75358673374bc Mon Sep 17 00:00:00 2001
From: Martin Mares <mj@ucw.cz>
Date: Fri, 31 Dec 2010 16:38:25 +0100
Subject: [PATCH] Implemented --version

---
 Makefile | 7 +++----
 nwho.c   | 6 ++++++
 nwho.h   | 3 +++
 nwhod.c  | 6 ++++++
 4 files changed, 18 insertions(+), 4 deletions(-)

diff --git a/Makefile b/Makefile
index 98a6d54..4ad4601 100644
--- a/Makefile
+++ b/Makefile
@@ -1,18 +1,17 @@
 # Makefile for the nwho toolkit
 
-CFLAGS=-O2 -Wall -Wno-parentheses
+VERSION=1.12
+CFLAGS=-O2 -Wall -Wno-parentheses -DVERSION=$(VERSION)
 LDFLAGS=-s
 ROOT=/
-REL=nwho-1.12
+REL=nwho-$(VERSION)
 
 all: nwhod nwho
 
 nwhod: nwhod.o
-
 nwhod.o: nwhod.c nwho.h
 
 nwho: nwho.o
-
 nwho.o: nwho.c nwho.h
 
 clean:
diff --git a/nwho.c b/nwho.c
index 3376803..6dfa7ab 100644
--- a/nwho.c
+++ b/nwho.c
@@ -136,6 +136,12 @@ scan(void)
 int
 main(int argc, char **argv)
 {
+  if (argc == 2 && !strcmp(argv[1], "--version"))
+    {
+      printf("nwho " STRINGIFY(VERSION) "\n");
+      return 0;
+    }
+
   if (strstr(argv[0], "uptime"))
     is_uptime = 1;
   if (argc != 1)
diff --git a/nwho.h b/nwho.h
index 23fdf30..1c22c54 100644
--- a/nwho.h
+++ b/nwho.h
@@ -37,3 +37,6 @@ struct nwho_pkt {
 #define DEFAULT_PRUNE_TIME 30
 #define DEFAULT_DOWN_TIME 120
 #define DEFAULT_DEAD_TIME 4*86400
+
+#define STRINGIFY(x) STRINGIFY2(x)
+#define STRINGIFY2(x) #x
diff --git a/nwhod.c b/nwhod.c
index 188bd6d..b5fc22d 100644
--- a/nwhod.c
+++ b/nwhod.c
@@ -368,6 +368,12 @@ client(char *serv)
 int
 main(int argc, char **argv)
 {
+  if (argc == 2 && !strcmp(argv[1], "--version"))
+    {
+      printf("nwho " STRINGIFY(VERSION) "\n");
+      return 0;
+    }
+
   if (argc == 2)
     client(argv[1]);
   else if (argc == 1)
-- 
2.39.2