1 files changed, 33 insertions, 1 deletions
diff --git a/src/option.cc b/src/option.cc
index 552d83f..2cae4ef 100644
--- a/src/option.cc
+++ b/src/option.cc
@@ -5,6 +5,7 @@
 
 #include "global.h"
 #include "util/io.h"
+#include "util/prompt.h"
 
 using namespace std;
 
@@ -27,6 +28,37 @@ void v(string s)
     }
     LOG << "-v: invalid value" << endl;
 }
-    
+
+void p(string s)
+{
+    if (s == "" || s == "true" || s == "1")
+    {
+        ov4::emit_prompt = true;
+        LOG << "emit_prompt = true" << endl;
+        return;
+    }
+    if (s == "false" || s == "0")
+    {
+        ov4::emit_prompt = false;
+        LOG << "emit_prompt = flase" << endl;
+        return;
+    }
+    LOG << "-p: invalid value" << endl;
+}
+
+
+/*
+ * usage - print a help message
+ */
+void h([[maybe_unused]] string s)
+{
+    cout << "\
+Usage: ccshell [-hvp] \n\
+    -h                  print this message \n\
+    -v(=<bool>)         print additional diagnostic information \n\
+    -p(=<bool>)         do not emit a command prompt \
+" << endl;
+    exit(1);
 }
 
+}