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// $Id: Rtcl.cpp 632 2015-01-11 12:30:03Z mueller $

//

// Copyright 2011-2014 by Walter F.J. Mueller <W.F.J.Mueller@gsi.de>

//

// This program is free software; you may redistribute and/or modify it under

// the terms of the GNU General Public License as published by the Free

// Software Foundation, either version 2, or at your option any later version.

//

// This program is distributed in the hope that it will be useful, but

// WITHOUT ANY WARRANTY, without even the implied warranty of MERCHANTABILITY

// or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License

// for complete details.

// 

// Revision History: 

// Date         Rev Version  Comment

// 2014-08-22   584   1.0.5  use nullptr

// 2013-01-06   473   1.0.4  add NewListIntObj(const uint(8|16)_t, ...)

// 2011-03-13   369   1.0.2  add NewListIntObj(vector<uint8_t>)

// 2011-03-05   366   1.0.1  add AppendResultNewLines()

// 2011-02-26   364   1.0    Initial version

// 2011-02-13   361   0.1    First draft

// ---------------------------------------------------------------------------

/*!

  \file

  \version $Id: Rtcl.cpp 632 2015-01-11 12:30:03Z mueller $

  \brief   Implemenation of Rtcl.

*/

#include "Rtcl.hpp"

using namespace std;

/*!

  \class Retro::Rtcl

  \brief FIXME_docs

*/

// all method definitions in namespace Retro

namespace Retro {

//------------------------------------------+-----------------------------------

//! FIXME_docs

Tcl_Obj* Rtcl::NewLinesObj(const std::string& str)

{

  const char* data = str.data();

  int size         = str.length();

  if (size>0 && data[size-1]=='\n') size -= 1;

  return Tcl_NewStringObj(data, size);

}

//------------------------------------------+-----------------------------------

//! FIXME_docs

Tcl_Obj* Rtcl::NewListIntObj(const uint8_t* data, size_t size)

{

  if (size == 0) return Tcl_NewListObj(0, nullptr);

  vector<Tcl_Obj*> vobj;

  vobj.reserve(size);

  for (size_t i=0; i<size; i++) {

    vobj.push_back(Tcl_NewIntObj((int)data[i]));

  }

  return Tcl_NewListObj(vobj.size(), vobj.data());

}

//------------------------------------------+-----------------------------------

//! FIXME_docs

Tcl_Obj* Rtcl::NewListIntObj(const uint16_t* data, size_t size)

{

  if (size == 0) return Tcl_NewListObj(0, nullptr);

  vector<Tcl_Obj*> vobj;

  vobj.reserve(size);

  for (size_t i=0; i<size; i++) {

    vobj.push_back(Tcl_NewIntObj((int)data[i]));

  }

  return Tcl_NewListObj(vobj.size(), vobj.data());

}

//------------------------------------------+-----------------------------------

//! FIXME_docs

Tcl_Obj* Rtcl::NewListIntObj(const std::vector<uint8_t>& vec)

{

  return NewListIntObj(vec.data(), vec.size());

}

//------------------------------------------+-----------------------------------

//! FIXME_docs

Tcl_Obj* Rtcl::NewListIntObj(const std::vector<uint16_t>& vec)

{

  return NewListIntObj(vec.data(), vec.size());

}

//------------------------------------------+-----------------------------------

//! FIXME_docs

bool Rtcl::SetVar(Tcl_Interp* interp, const std::string& varname, Tcl_Obj* pobj)

{

  Tcl_Obj* pret = nullptr;

  size_t pos_pbeg = varname.find_first_of('(');

  size_t pos_pend = varname.find_first_of(')');

  if (pos_pbeg != string::npos || pos_pend != string::npos) {

    if (pos_pbeg == string::npos || pos_pbeg == 0 ||

        pos_pend == string::npos || pos_pend != varname.length()-1 ||

        pos_pend-pos_pbeg <= 1) {

      Tcl_AppendResult(interp, "illformed array name '", varname.c_str(),

                       "'", nullptr);

      return false;

    }

    string arrname(varname.substr(0,pos_pbeg));

    string elename(varname.substr(pos_pbeg+1, pos_pend-pos_pbeg-1));

    pret = Tcl_SetVar2Ex(interp, arrname.c_str(), elename.c_str(), pobj,

                         TCL_LEAVE_ERR_MSG);

  } else {

    pret = Tcl_SetVar2Ex(interp, varname.c_str(), nullptr, pobj,

                         TCL_LEAVE_ERR_MSG);

  }

  return pret!=0;

}

//------------------------------------------+-----------------------------------

//! FIXME_docs

bool Rtcl::SetVarOrResult(Tcl_Interp* interp, const std::string& varname,

                          Tcl_Obj* pobj)

{

  if (varname != "-") {

    return SetVar(interp, varname, pobj);

  }

  Tcl_SetObjResult(interp, pobj);

  return true;

}

//------------------------------------------+-----------------------------------

//! FIXME_docs

void Rtcl::AppendResultNewLines(Tcl_Interp* interp)

{

  // check whether ObjResult is non-empty, in that case add an '\n'

  // that allows to append output from multiple AppendResultLines properly

  const char* res =  Tcl_GetStringResult(interp);

  if (res && res[0]) {

    Tcl_AppendResult(interp, "\n", nullptr);

  }

  return;

}

//------------------------------------------+-----------------------------------

//! FIXME_docs

void Rtcl::SetResult(Tcl_Interp* interp, const std::string& str)

{

  Tcl_SetObjResult(interp, NewLinesObj(str));

  return;

}

} // end namespace Retro