shell.h

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#pragma once
#include <memory>
#include <stdio.h>
#include <cobj.h>
#include <cstr.h>
#include <vector>
#include <string>
class CShellObj;
class CShellCmd{
  friend  class CShellObj;
  str16 _name;
  virtual int vOnMain( const std::vector< str16 >& tokens )=0;
protected:
  CShellObj* _pShellObj = nullptr;
  bool  ShowHelp( const std::vector< str16 >& tokens , const char* help );
public:
  int   Main( const std::vector< str16 >& tokens ){
    return  vOnMain( tokens );
  }
  CShellCmd( const char* name_ );
  virtual ~CShellCmd(){}
};
 
class CHelpShellCmd;
class ImplCShellObj;
class CShellObj : public CObj {
  friend  class CHelpShellCmd;
  ImplCShellObj* _impl;
  bool  _no_history_registration = false;
  void  vOnStep() override;
  int   _Parse();
  void  _SetLineBuff( const char* sz );
public:
  void  Prompt();
  std::vector< str16 >  GetAvailableCommands();
  void  Register( CShellCmd* cmd_ );
  void  Input( u32 keycode_ );
  void  ExecShellScript( std::shared_ptr< std::string > script_ );
  CShellObj();
  ~CShellObj();
};