Add -version option to print program version

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

2 files changed, 12 insertions, 1 deletions

diff --git a/man/xwininfo.man b/man/xwininfo.man
index 6da7139..66418c6 100644
--- a/man/xwininfo.man
+++ b/man/xwininfo.man
@@ -32,7 +32,7 @@ xwininfo \- window information utility for X
 [\-children] [\-tree] [\-stats] [\-bits] [\-events] [\-size] [\-wm] [\-shape]
 [\-frame] [\-all]
 [\-english] [\-metric]
-[\-display \fIdisplay\fP]
+[\-display \fIdisplay\fP] [\-version]
 .SH DESCRIPTION
 .PP
 .I Xwininfo
@@ -154,6 +154,12 @@ This option is a quick way to ask for all information possible.
 .TP 8
 .B \-display \fIdisplay\fP
 This option allows you to specify the server to connect to; see \fIX(__miscmansuffix__)\fP.
+PP
+.TP 8
+.B \-version
+This option indicates that
+.I xwininfo
+should print its version information and exit.
 .SH EXAMPLE
 .PP
 The following is a sample summary taken with no options specified:
diff --git a/xwininfo.c b/xwininfo.c
index 3f80b94..520719b 100644
--- a/xwininfo.c
+++ b/xwininfo.c
@@ -286,6 +286,7 @@ usage (void)
 	     "usage:  %s [-options ...]\n\n"
 	     "where options include:\n"
 	     "    -help                print this message\n"
+	     "    -version             print version message\n"
 	     "    -display host:dpy    X server to contact\n"
 	     "    -root                use the root window\n"
 	     "    -id windowid         use the window with the specified id\n"
@@ -537,6 +538,10 @@ main (int argc, char **argv)
 	    tree = stats = bits = events = wm = size = shape = 1;
 	    continue;
 	}
+	if (!strcmp(argv[i], "-version")) {
+	    puts(PACKAGE_STRING);
+	    exit(0);
+	}
 	fprintf (stderr, "%s: unrecognized argument %s\n\n",
 		 program_name, argv[i]);
 	usage ();