Add -version option

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

2 files changed, 21 insertions, 0 deletions

diff --git a/main.c b/main.c
index 691f4f9..64cf9ed 100644
--- a/main.c
+++ b/main.c
@@ -151,6 +151,23 @@ main(int argc, char **argv)
 
     XtSetLanguageProc(NULL, (XtLanguageProc) NULL, NULL);
 
+    /* Handle args that don't require opening a display */
+    for (int i = 1; i < argc; i++) {
+        const char *arg = argv[i];
+        /* accept single or double dash for -help & -version */
+        if (arg[0] == '-' && arg[1] == '-') {
+            arg++;
+        }
+        if (strcmp(arg, "-help") == 0) {
+            ArgError(0, NULL);
+            exit(0);
+        }
+        if (strcmp(arg, "-version") == 0) {
+            puts(PACKAGE_STRING);
+            exit(0);
+        }
+    }
+
     initial_widget = XtAppInitialize(&app_con, "Xman", xman_options,
                                      XtNumber(xman_options), &argc, argv,
                                      fallback_resources, NULL, ZERO);
diff --git a/man/xman.man b/man/xman.man
index d18e7f0..62baad9 100644
--- a/man/xman.man
+++ b/man/xman.man
@@ -40,6 +40,10 @@ Starts without the Top Menu with the three buttons in it.
 Sets the size and location of the Top Menu with the three buttons in it.
 .IP "\fB\-pagesize\fP \fIWxH+X+Y\fP"
 Sets the size and location of all the Manual Pages.
+.IP "\fB\-help\fP"
+Print a usage message and exit.
+.IP "\fB\-version\fP"
+Print the program version and exit.
 .SH "CUSTOMIZING XMAN"
 .PP
 .I Xman