#include "TSystem.h"
#include "TString.h"

namespace SetACLiC
{
  // This adds --enable-cxx11 so that C++11 warnings
  // are not shown when building libs and exes.
  static const TString stdform = "-std=c++11";
  
  Bool_t SetCXX11(Bool_t set = kTRUE)
  {
    //const TString compiler = gSystem->GetBuildCompiler();
    const TString compiler = "clang++-mp-3.2";
    TString options_sl, options_exe;
    options_sl = TString(gSystem->GetMakeSharedLib());
    options_exe = TString(gSystem->GetMakeExe());
    
    Bool_t already_cxx11_sl = options_sl.Contains(stdform);
    Bool_t already_cxx11_exe = options_exe.Contains(stdform);
    
    const Int_t len = stdform.Length();
    if(set)
      {
	if(!already_cxx11_sl)
	  {
	    //options_sl = options_sl.ReplaceAll(" -c ", " "+stdform+" -c ");
	    options_sl = options_sl.ReplaceAll(compiler,
					       compiler+" "+stdform);
	    gSystem->SetMakeSharedLib(options_sl.Data());
	  }
	if(!already_cxx11_exe)
	  {
	    //options_exe = options_exe.ReplaceAll(" -c ", " "+stdform+" -c ");
	    options_exe = options_exe.ReplaceAll(compiler,
						 compiler+" "+stdform);
	    gSystem->SetMakeExe(options_exe.Data());
	  }     
      }
    else // This means unset
      {
	while(options_sl.Contains(stdform))
	  {
	    Int_t where = options_sl.Index(stdform);
	    options_sl = options_sl.Remove(where,len);
	    gSystem->SetMakeSharedLib(options_sl.Data());
	  }
	while(options_exe.Contains(stdform))
	  {
	    Int_t where = options_exe.Index(stdform);
	    options_exe = options_exe.Remove(where,len);
	    gSystem->SetMakeExe(options_exe.Data());
	  }
      }
    return options_sl.Contains(stdform) && options_exe.Contains(stdform);
  }

  Bool_t SetVerbose(Bool_t set = kTRUE)
  {
    const TString compiler = gSystem->GetBuildCompiler();
    const TString verbose_switch = " -v ";
    const Int_t vs_length = verbose_switch.Length();
    
    TString options_sl = gSystem->GetMakeSharedLib();
    TString options_exe = gSystem->GetMakeExe();

    Bool_t verbose_sl = options_sl.Contains(verbose_switch);
    Bool_t verbose_exe = options_exe.Contains(verbose_switch);
    if(set)
      {
	if(!verbose_sl)
	  {
	    options_sl = options_sl.ReplaceAll(compiler,
					       compiler+verbose_switch);
	    gSystem->SetMakeSharedLib(options_sl.Data());
	  }
	if(!verbose_exe)
	  {
	    options_exe = options_exe.ReplaceAll(compiler,
						 compiler+verbose_switch);
	    gSystem->SetMakeExe(options_exe.Data());
	  }
      }
    else // If unset
      {
	while(options_sl.Contains(verbose_switch))
	  {
	    Int_t where = options_sl.Index(verbose_switch);
	    options_sl = options_sl.Remove(where,vs_length);
	    gSystem->SetMakeSharedLib(options_sl.Data());
	  }
	while(options_exe.Contains(verbose_switch))
	  {
	    Int_t where = options_exe.Index(verbose_switch);
	    options_exe = options_exe.Remove(where,vs_length);
	    gSystem->SetMakeExe(options_exe.Data());
	  }
      }
    return options_sl.Contains(verbose_switch) && options_exe.Contains(verbose_switch);
  }
  
} // Namespace SetACLiC