Add -version option to print program version

Signed-off-by: Alan Coopersmith <alan.coopersmith@oracle.com>

2 files changed, 15 insertions, 2 deletions

diff --git a/man/xwud.man b/man/xwud.man
index 0ca7d95..fa2bd1d 100644
--- a/man/xwud.man
+++ b/man/xwud.man
@@ -30,7 +30,7 @@ xwud - image displayer for X
 [\-in \fIfile\fP] [\-noclick] [\-geometry \fIgeom\fP] [\-display \fIdisplay\fP]
 [\-new] [\-std <maptype>] [\-raw] [\-vis <vis-type-or-id>] [\-scale]
 [\-help] [\-rv] [\-plane \fInumber\fP] [\-fg \fIcolor\fP] [\-bg \fIcolor\fP]
-[\-dumpheader]
+[\-dumpheader] [\-version]
 .SH DESCRIPTION
 .PP
 .I Xwud
@@ -122,6 +122,12 @@ Typical types are "best", "default", and "gray".  See \fIxstdcmap(__appmansuffix
 for one way of creating Standard Colormaps.
 .PP
 .TP 8
+.B "\-version"
+This option causes
+.I xwd
+to print its version information and exit.
+.PP
+.TP 8
 .B "\-vis \fIvis-type-or-id\fP"
 This option allows you to specify a particular visual or visual class.
 The default is to pick the "best" one.  A particular class can be
diff --git a/xwud.c b/xwud.c
index 161d976..1de9c10 100644
--- a/xwud.c
+++ b/xwud.c
@@ -28,6 +28,9 @@ from The Open Group.
 
 /* xwud - marginally useful raster image undumper */
 
+#ifdef HAVE_CONFIG_H
+#include "config.h"
+#endif
 
 #include <X11/Xos.h>
 #include <X11/Xlib.h>
@@ -85,7 +88,7 @@ usage(const char *errmsg)
             " [-in <file>] [-noclick] [-geometry <geom>] [-display <display>]\n"
  "            [-new] [-std <maptype>] [-raw] [-vis <vis-type-or-id>]\n"
  "            [-help] [-rv] [-plane <number>] [-fg <color>] [-bg <color>]\n"
- "            [-scale]\n"
+ "            [-scale] [-dumpheader] [-version]\n"
         );
     exit(1);
 }
@@ -236,6 +239,10 @@ main(int argc, char *argv[])
 	    vis = argv[i];
 	    continue;
 	}
+	if (strcmp(argv[i], "-version") == 0) {
+	    puts(PACKAGE_STRING);
+	    exit(0);
+	}
 	fprintf (stderr, "%s: unrecognized argument '%s'\n\n",
 		 progname, argv[i]);
 	usage(NULL);