Add -version option

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

2 files changed, 14 insertions, 1 deletions

diff --git a/man/xcalc.man b/man/xcalc.man
index 8e58d01..e286692 100644
--- a/man/xcalc.man
+++ b/man/xcalc.man
@@ -65,6 +65,9 @@ displays improves the appearance.
 This option indicates that Reverse Polish Notation should be used.  In this
 mode the calculator will look and behave like an HP-10C.  Without this flag,
 it will emulate a TI-30.
+.TP 8
+.B \-version
+This option indicates that \fIxcalc\fP should print its version and exit.
 .SH OPERATION
 .PP
 .I Pointer Usage:
diff --git a/xcalc.c b/xcalc.c
index f3ca18f..e188439 100644
--- a/xcalc.c
+++ b/xcalc.c
@@ -88,13 +88,15 @@ static unsigned char check_bits[] = {
 /*	command line options specific to the application */
 static XrmOptionDescRec Options[] = {
 {"-rpn",	"rpn",		XrmoptionNoArg,		(XtPointer)"on"},
-{"-stipple",	"stipple",	XrmoptionNoArg,		(XtPointer)"on"}
+{"-stipple",	"stipple",	XrmoptionNoArg,		(XtPointer)"on"},
+{"-version",	"version",	XrmoptionNoArg,		(XtPointer)"on"}
 };
 
 /*	resources specific to the application */
 static struct resources {
     Boolean	rpn;		/* reverse polish notation (HP mode) */
     Boolean	stipple;	/* background stipple */
+    Boolean	version;	/* print version */
     Cursor	cursor;
 } appResources;
 
@@ -104,6 +106,8 @@ static XtResource Resources[] = {
      offset(rpn),	XtRImmediate,	(XtPointer) False},
 {"stipple",	"Stipple",	XtRBoolean,	sizeof(Boolean),
      offset(stipple),	XtRImmediate,	(XtPointer) False},
+{"version",	"Version",	XtRBoolean,	sizeof(Boolean),
+     offset(version),	XtRImmediate,	(XtPointer) False},
 {"cursor",	"Cursor",	XtRCursor,	sizeof(Cursor),
      offset(cursor),	XtRCursor,	(XtPointer)NULL}
 };
@@ -127,6 +131,12 @@ main(int argc, char **argv)
     XtGetApplicationResources(toplevel, (XtPointer)&appResources, Resources,
 			      XtNumber(Resources), (ArgList) NULL, ZERO);
 
+    if (appResources.version)
+    {
+        puts(PACKAGE_STRING);
+        exit(0);
+    }
+
     create_calculator(toplevel);
 
     XtAppAddActions(xtcontext, Actions, ActionsCount);