Added check if a given command exists.

src/base/cmd/cmd.h

@@ -52,6 +52,7 @@ extern void        Cmd_Init( Abc_Frame_t * pAbc );
 extern void        Cmd_End( Abc_Frame_t * pAbc );
 /*=== cmdApi.c ========================================================*/
 typedef int (*Cmd_CommandFuncType)(Abc_Frame_t*, int, char**);
+extern int         Cmd_CommandIsDefined( Abc_Frame_t * pAbc, const char * sName );
 extern void        Cmd_CommandAdd( Abc_Frame_t * pAbc, const char * sGroup, const char * sName, Cmd_CommandFuncType pFunc, int fChanges );
 extern ABC_DLL int Cmd_CommandExecute( Abc_Frame_t * pAbc, const char * sCommand );
 /*=== cmdFlag.c ========================================================*/

src/base/cmd/cmdApi.c

@@ -44,6 +44,22 @@ ABC_NAMESPACE_IMPL_START
   SeeAlso     []
 
 ***********************************************************************/
+int Cmd_CommandIsDefined( Abc_Frame_t * pAbc, const char * sName )
+{
+    return st__is_member( pAbc->tCommands, sName );
+}
+
+/**Function*************************************************************
+
+  Synopsis    []
+
+  Description []
+               
+  SideEffects []
+
+  SeeAlso     []
+
+***********************************************************************/
 void Cmd_CommandAdd( Abc_Frame_t * pAbc, const char * sGroup, const char * sName, Cmd_CommandFuncType pFunc, int fChanges )
 {
     const char * key;