source: Sophya/trunk/SophyaLib/SysTools/commander.cc@ 2520

#include "commander.h"
#include <stdio.h>
#include <stdlib.h>
#include <unistd.h>
#include <ctype.h>
#include <math.h>

#include "strutil.h"
#include "strutilxx.h"
#include "cexpre.h"
#include "rpneval.h"
#include "srandgen.h"


namespace SOPHYA {

// Differents code de retour specifiques 
#define CMD_RETURN_RC  99900
#define CMD_BREAK_RC   99990
#define CMD_BREAKEXE_RC 99999

// ------------------------------------------------------------
//         Bloc de commandes (Foreach, ...)    
//               Classe  CommanderBloc    
// ------------------------------------------------------------
/*!
  \class SOPHYA::CommanderBloc
  \ingroup SysTools 
  Class for internal use by SOPHYA::Commander to handle loops
*/
class CommanderBloc {
public:
  enum BType { BT_None, BT_ForeachList, BT_ForeachInt, BT_ForeachFloat, 
               BT_ForeachLineInFile };

  CommanderBloc(Commander* piac, CommanderBloc* par, string& kw, vector<string>& args); 
  ~CommanderBloc();
  inline CommanderBloc*   Parent() { return(parent); }
  inline bool   CheckOK() { return blkok; }
  inline void   AddLine(string& line)  
    { lines.push_back(line); bloclineid.push_back(lines.size()); }
  void          AddLine(string& line, string& kw);  
  inline void   AddBloc(CommanderBloc* blk)  
    { blocs.push_back(blk); bloclineid.push_back(-blocs.size()); }

  // Execution complete du bloc (boucle)
  int           Execute();
  // Execution pour un element de bloc 
  int           ExecuteOnce(string& lvv);

  inline int&   TestLevel()  { return testlevel; }
  inline int&   LoopLevel()  { return looplevel; }
  inline bool   CheckBloc() 
    { return ((testlevel == 0)&&(looplevel == 0)&&(!scrdef)); }
  
protected:
  Commander* _commander;
  CommanderBloc* parent;
  bool blkok;        // true -> block OK
  BType typ;         // foreach , integer loop, float loop, test 
  string varname;
  string filename;   // forinfile bloc
  vector<string> strlist;
  vector<string> lines;
  vector<CommanderBloc *> blocs;
  vector<int> bloclineid;
  int i1,i2,di;
  float f1,f2,df;
  int testlevel;   // niveau d'imbrication des if 
  int looplevel;   // niveau d'imbrication des for/foreach 
  bool scrdef;     // true -> commande defscript ds for/foreach 
};

/* --Methode-- */
CommanderBloc::CommanderBloc(Commander* piac, CommanderBloc* par, string& kw, vector<string>& args)
{
_commander = piac;
parent = par;
blkok = false;
typ = BT_None;
i1 = 0;  i2 = -1;  di = 1;
f1 = 0.; f2 = -1.; df = 1.;
testlevel = looplevel = 0;
scrdef = false;

if ((args.size() < 2) ||  !isalpha((int)args[0][0]) )  return; 
if ((kw != "foreach") && (kw != "for") && (kw != "forinfile"))  return;
if (!piac->CheckVarName(args[0])) return;
varname = args[0];  

//if (isalpha((int)args[1][0]) ) {  This is a foreach bloc with string list
if (kw == "forinfile") {
  filename = args[1];
  typ = BT_ForeachLineInFile;
  blkok = true;
}
else if (kw == "foreach" ) { // This is a foreach bloc with string list
  if ( (args[1] == "(") && (args[args.size()-1] == ")") ) {
    // foreach varname ( w1 w2 w3 ... ) 
    for(int kk=2; kk<args.size()-1; kk++) strlist.push_back(args[kk]);
  }
  else {
    // foreach varname WordVectorName 
    if (!piac->GetVar(args[1], strlist))  return;
  }
  if (strlist.size() < 1)  return;
  typ = BT_ForeachList;
  blkok = true;
}
else { // This is an integer or float loop
  size_t l = args[1].length();
  size_t p = args[1].find(':');
  size_t pp = args[1].find('.');
  bool fl = (pp < l) ? true : false;  // Float loop or integer loop
  if (p >= l) return;  // Syntaxe error
  string a1 = args[1].substr(0, p);
  string aa = args[1].substr(p+1);
  p = aa.find(':');
  string a2, a3;
  bool hasa3 = false;
  if (p < aa.length() ) { 
    a2 = aa.substr(0,p);
    a3 = aa.substr(p+1);
    hasa3 = true;
    }
  else  a2 = aa; 
  if (fl) { 
    typ = BT_ForeachFloat;
    blkok = true;
    f1 = atof(a1.c_str());
    f2 = atof(a2.c_str());
    if (hasa3)  df = atof(a3.c_str());
    else df = 1.;
    }
  else { 
    typ = BT_ForeachInt;
    blkok = true;
    i1 = atoi(a1.c_str());
    i2 = atoi(a2.c_str());
    if (hasa3)  di = atoi(a3.c_str());
    else di = 1;
    }
  }
}

/* --Methode-- */
CommanderBloc::~CommanderBloc()
{
for(int k=0; k<blocs.size(); k++) delete blocs[k];
}

/* --Methode-- */
void CommanderBloc::AddLine(string& line, string& kw)
{
  AddLine(line);
  if (kw == "if")  testlevel++;
  else if (kw == "endif")  testlevel--; 
  else if ((kw == "for") || (kw == "foreach"))  looplevel++;
  else if (kw == "end")  looplevel--; 
  else if (kw == "defscript")  scrdef = true; 
}

/* --Methode-- */
int CommanderBloc::Execute()
{
int k=0;
char buff[32];
int rcc = 0;

int mxloop = _commander->GetMaxLoopLimit();

if (typ == BT_ForeachLineInFile) {  // foreach line in file loop
  ifstream is(filename.c_str());
  char buff[256];
  string line;
  while (!is.eof()) {
    rcc = 0;
    is.clear(); 
    is.getline(buff, 256);
    line += buff;  
    if (is.good()) { 
      rcc = ExecuteOnce(line);
      line = "";
    }
    if (rcc == CMD_BREAKEXE_RC)  return rcc;
    else if (rcc == CMD_BREAK_RC)  break;
  }
}
else if (typ == BT_ForeachList) {  // foreach string loop
  for(k=0; k<strlist.size(); k++) {
    rcc = ExecuteOnce(strlist[k]);
    if (rcc == CMD_BREAKEXE_RC)  return rcc;
    else if (rcc == CMD_BREAK_RC)  break; 
  }  
}
else if (typ == BT_ForeachInt)  { // Integer loop
  for(int i=i1; i<i2; i+=di) {
    k++;
    if ((mxloop>0) && (k > mxloop)) {
      cout << ">>> Maximum CommanderBloc loop limit ("<< mxloop << ") -> break " << endl;
      break;
      }
    sprintf(buff, "%d", i);
    string lvv = buff;
    rcc = ExecuteOnce(lvv);
    if (rcc == CMD_BREAKEXE_RC)  return rcc;
    else if (rcc == CMD_BREAK_RC)  break; 
  }
}
else if (typ == BT_ForeachFloat)  { // float loop
  for(double f=f1; f<f2; f+=df) {
    k++;
    if ((mxloop>0) && (k > mxloop)) {
      cout << ">>> Maximum CommanderBloc loop limit ("<< mxloop << ") -> break " << endl;
      break;
      }
    sprintf(buff, "%g", f);
    string lvv = buff;
    rcc = ExecuteOnce(lvv);
    if (rcc == CMD_BREAKEXE_RC)  return rcc;
    else if (rcc == CMD_BREAK_RC)  break; 
  }
}
return(rcc); 
}

/* --Methode-- */
int CommanderBloc::ExecuteOnce(string& lvv)
{
  int kj=0;
  int kk=0;
  int rcc = 0;
  _commander->SetVar(varname, lvv);
  for(kj=0; kj<bloclineid.size(); kj++) {
    rcc = 0;
    kk = bloclineid[kj]; 
    if (kk > 0)   
      rcc = _commander->Interpret(lines[kk-1]);
    else 
      rcc = blocs[-kk-1]->Execute();
    if (rcc == CMD_BREAKEXE_RC)  return (rcc);
    if (rcc == CMD_BREAK_RC)  break;    
  }
  return rcc;
}

// ---------------------------------------------------------------
//                  Classe CommanderScript 
//   Definition et execution d'un script de Commander
//   script : Une liste de commande Commander - Lors de l'execution, 
//   les variables-argument $# $0 $1 sont definies. 
// ---------------------------------------------------------------

/*!
  \class SOPHYA::CommanderScript
  \ingroup SysTools 
  Class for internal use by SOPHYA::Commander to handle functions
  or scripts
*/

class CommanderScript {
public:
  CommanderScript(Commander* piac, string const& name, string const& comm);
  virtual ~CommanderScript();

  void          AddLine(string& line, string& kw);  
  virtual int   Execute(vector<string>& args);

  inline string& Name() { return mName; }
  inline string& Comment() { return mComm; }
  inline int&   TestLevel()  { return testlevel; }
  inline int&   LoopLevel()  { return looplevel; }
  inline bool   CheckScript() 
    { return ((testlevel == 0)&&(looplevel == 0)&&(!scrdef)&&fgok); }

protected:
  Commander* _commander;
  string mName;
  string mComm;
  vector<string> lines;
  int testlevel;   // niveau d'imbrication des if 
  int looplevel;   // niveau d'imbrication des for/foreach 
  bool scrdef;     // true -> commande defscript ds for/foreach 
  bool fgok;       // Script name OK
  
};

/* --Methode-- */
CommanderScript::CommanderScript(Commander* piac, string const& name, 
                           string const& comm)
{
_commander = piac;
testlevel = looplevel = 0;
scrdef = false;
mName = name;
if (!isalpha(name[0]))  fgok = false;
else fgok = true;
mComm = comm;
}

/* --Methode-- */
CommanderScript::~CommanderScript()
{
}

/* --Methode-- */
void CommanderScript::AddLine(string& line, string& kw)
{
  if (kw == "if")  testlevel++;
  else if (kw == "endif")  testlevel--; 
  else if ((kw == "for") || (kw == "foreach"))  looplevel++;
  else if (kw == "end")  looplevel--; 
  else if (kw == "defscript")  scrdef = true; 
  lines.push_back(line);
}

/* --Methode-- */
int CommanderScript::Execute(vector<string>& args)
{
  int rcc;
  if (!CheckScript()) return(-1);
  cout << " CommanderScript::Execute() - Executing script " << Name() << endl;
  for(int k=0; k<lines.size(); k++) {
    rcc = _commander->Interpret(lines[k]);
    if ( (rcc == CMD_BREAKEXE_RC) || (rcc == CMD_RETURN_RC) ) break; 
  }
  return(rcc);
}

// ------------------------------------------------------------
//         Classe Commander
// ------------------------------------------------------------
typedef void (* DlModuleInitEndFunction) ();

/*!
  \class SOPHYA::Commander
  \ingroup SysTools
  Simple command interpreter with c-shell like syntax and dynamic 
  load capabilities. Can be used to add scripting capabilities
  to applications
*/

#define _MAGENTA_ 1

static Commander* cur_commander = NULL;
/* --Methode-- */
Commander::Commander()
{
system("cp history.pic hisold.pic");
hist.open("history.pic");
histon = true;
trace = false;   timing = false;
gltimer = NULL;
felevel = 0;

mulinecmd = "";
mulinefg = false;
spromptmul = "Cmd> ";
SetCurrentPrompt(spromptmul);
SetDefaultPrompt(spromptmul);
curscript = NULL;

_xstatus = 0;
 _retstr = "";

// Controle du flot d'execution 
 fgexebrk = false;

CmdBlks.push(NULL);
list<char> xtx;
TestsStack.push(xtx);
curtestresult = true;

// Numero de help-groupe courant - Le premier groupe ajoute aura un gid = 1
// gid = 0 n'existe pas : c'est le groupe de toutes les commandes
cmdgrpid = 0;

string grp = "Commander";
string gdesc = "Basic (generic) interpreter (class SOPHYA::Commander) builtin commands";
AddHelpGroup(grp, gdesc);

string kw = "Commander";
string usage;
usage = ">>> (Commander) Interpreter's keywords : \n";
usage += "  > set varname string   # To set a variable, $varname \n";
usage += "  > unset varname          # clear variable definition \n";
usage += "  > rpneval varname RPNExpression  # Reverse Polish Notation evaluation \n";
usage += "  > varname = ArithmeticExpression # C-like Expression evaluation   \n"; 
usage += "  > varname = 'String'     # Set variable vname  \n"; 
usage += "  > var2words varname wordvarname [sep]    # to break varname into words  \n"; 
usage += "  > echo string            # output string \n"; 
usage += "  > echo2file filename string # Append the string to the specified file \n"; 
usage += "  > alias name string      # define a command alias \n"; 
usage += "  > foreach varname ( string-list ) # Loop \n";  
usage += "  > for varname i1:i2[:di]      # Integer loop  \n";  
usage += "  > for varname f1:f2[:df]      # Float loop  \n";
usage += "  > forinfile varname FileName  # Loop over lines in file \n";
usage += "  > end                         # end loops \n"; 
usage += "  > if ( test ) then  # Conditional test : a == != < > <= >= b \n";
usage += "  > else          # Conditional  \n";
usage += "  > endif         # End of conditional if bloc \n"; 
usage += "  > break         # Delete (clears) all test and loop blocs \n";
usage += "  > return        # Stops command execution from a file \n";
usage += "  > defscript endscript # Command script definition \n";
usage += "  > listvars      # List of variable names and values \n";
usage += "  > listalias     # List of alias names and values \n";
usage += "  > listcommands  # List of all known commands \n";
usage += "  > listscripts   # List of all known scripts \n";
usage += "  > clearcript    # Clear a script definition \n";
usage += "  > exec filename # Execute commands from file \n";
usage += "  > help <command_name>  # <command_name> usage info \n";   
usage += "  > sleep nsec  # sleep nsec seconds \n";   
usage += "  > readstdin varname      # reads a line from stdin into $varname \n"; 
usage += "  > timingon  timingoff traceon  traceoff \n";
RegisterHelp(kw, usage, grp);

kw = "RPNEvaluator";
usage = " Reverse Polish Notation (HP calculator like) expression evaluation \n";
usage += "  >> Stack: \n";
usage += "     ... (4) (3) z=(2) y=(1) x=(0)=Stack.Top() \n";
usage += "  >> Examples:  \n";
usage += "  - sin(PI/6): pi 6 / sin \n";
usage += "  - 1*2*...*5: 1 2 3 4 5 product \n";
usage += "  - x=x+y: x = $x $y * \n";
usage += "  >>> Stack operations : \n";
usage += "      print x<>y pop push (duplicate x) \n";
usage += "  >>> Constants (Cst pushed to stack): \n";
usage += "      pi e \n";
usage += "  >>> Arithmetic operators (x,y) --> x@y \n";
usage += "      + - * / % ( (int)y % (int)x )\n";
usage += "  >>> F(X): x --> F(x) \n";
usage += "      chs sqrt sq log log10 exp  \n"; 
usage += "      fabs  floor ceil \n"; 
usage += "      cos sin tan acos asin atan deg2rad rad2deg \n"; 
usage += "  >>> F(X,Y): (x,y) --> F(x,y) \n";
usage += "      pow atan2 \n"; 
usage += "  >>> F(): random number generators \n";
usage += "      rand (flat 0..1) norand (normal/gaussian) \n"; 
usage += "  >>> Stack sum/product/mean/sigma/sigma^2 \n";
usage += "      sum product mean sigma sigma2 sigmean (y->sigma x->mean) \n"; 
RegisterHelp(kw, usage, grp);

kw = "autoiniranf";
usage  = "> Automatic random number generator initialisation\n";
usage += "   by Auto_Ini_Ranf(int lp) \n";
usage += "   Usage: autoiniranf";
RegisterCommand(kw, usage, NULL, grp);

kw = "shell execute";
usage  = "> shell  command_string  # Execute  shell command\n";
usage += "> cshell command_string  # Execute cshell command\n";
usage += "---Examples:\n";
usage += "  > shell ls\n";
usage += "  > cshell echo '$LD_LIBRARY_PATH'; map2cl -h; ls\n";
usage += "  > shell myfile.csh [arg1] [arg2] [...]\n";
usage += "    (where the first line of \"myfile.csh\" is \"#!/bin/csh\")\n";
RegisterCommand(kw, usage, NULL, grp);


AddInterpreter(this);
curcmdi = this;
}

/* --Methode-- */
Commander::~Commander()
{
hist.close();
if (gltimer) { delete gltimer;  gltimer = NULL; }
Modmap::iterator it;
for(it = modmap.begin(); it != modmap.end(); it++) {
  string name = (*it).first + "_end";
  DlModuleInitEndFunction fend = (*it).second->GetFunction(name);
  if (fend) fend();
  delete (*it).second;
  }

for(ScriptList::iterator sit = mScripts.begin();
    sit != mScripts.end(); sit++) delete (*sit).second; 
 
if (cur_commander == this)  cur_commander = NULL;
}

/* --Methode-- */
Commander* Commander::GetInterpreter()
{
return(cur_commander);
}

/* --Methode-- */
string Commander::Name()
{
return("Commander");
}

/* --Methode-- */
void Commander::AddHelpGroup(string& grp, string& desc)
{
  int gid; 
  CheckHelpGrp(grp, gid, desc);
}

/* --Methode-- */
void Commander::RegisterCommand(string& keyw, string& usage, CmdExecutor * ce, string& grp)
{
if (!ce) { 
  RegisterHelp(keyw, usage, grp);
  return;
  }
int gid;
CheckHelpGrp(grp,gid);
cmdex cme;
cme.group = gid;
cme.us = usage;
cme.cex = ce;
cmdexmap[keyw] = cme;
}

/* --Methode-- */
void Commander::RegisterHelp(string& keyw, string& usage, string& grp)
{
int gid;
CheckHelpGrp(grp,gid);
cmdex cme;
cme.group = gid;
cme.us = usage;
cme.cex = NULL;
helpexmap[keyw] = cme;
}

/* --Methode-- */
bool Commander::CheckHelpGrp(string& grp, int& gid, string& desc)
{
gid = 0;
CmdHGroup::iterator it = cmdhgrp.find(grp);
if (it == cmdhgrp.end()) {
  cmdgrpid++;  gid = cmdgrpid;
  hgrpst hgs;  hgs.gid = gid;  hgs.desc = desc;
  cmdhgrp[grp] = hgs;
  return true;
  }
else { 
  if (desc.length() > 0)  (*it).second.desc = desc; 
  gid = (*it).second.gid;
  return false;
}
}


/* --Methode-- */
void Commander::LoadModule(string& fnameso, string& name)
{
PDynLinkMgr * dynlink = new PDynLinkMgr(fnameso, false);
if (dynlink == NULL) {
  cerr << "Commander/LoadModule_Error: Pb opening SO " << fnameso << endl;
  return;
  }
string fname = name + "_init";
DlModuleInitEndFunction finit = dynlink->GetFunction(fname);
if (!finit) {
  cerr << "Commander/LoadModule_Error: Pb linking " << fname << endl;
  return;
  }
cout << "Commander/LoadModule_Info: Initialisation module" << name 
     << "  " << fname << "() ..." << endl;
finit();
modmap[name] = dynlink;
return;
}

/* --Methode-- */
void Commander::AddInterpreter(CmdInterpreter * cl)
{
if (!cl) return;
interpmap[cl->Name()] = cl;}

/* --Methode-- */
void Commander::SelInterpreter(string& name)
{
InterpMap::iterator it = interpmap.find(name);
if (it == interpmap.end())   return;
curcmdi = (*it).second;
}



/* Fonction */
static string GetStringFrStdin(Commander* piac)
{
char buff[128];
fgets(buff, 128, stdin);
buff[127] = '\0';
return((string)buff);
}

/* --Methode-- */
int Commander::Interpret(string& s)
{
int rc = 0;
ScriptList::iterator sit;

// On saute de commandes vides
size_t l;
l = s.length();
if (!mulinefg && (l < 1))  return(0);

// On enregistre les commandes 
if (histon) hist << s << endl;   

if (s[0] == '#') return(0); // si c'est un commentaire

// Logique de gestion des lignes suite
// un \ en derniere position indique la presence d'une ligne suite
size_t lnb = s.find_last_not_of(' ');
if (s[lnb] == '\\' ) { // Lignes suite ...
  mulinecmd += s.substr(0,lnb);
  if (!mulinefg) {
    spromptmul = GetCurrentPrompt();
    SetCurrentPrompt("...? ");
    mulinefg = true;
  }
  return(0);
}

if (mulinefg) {  // Il y avait des lignes suite
  s = mulinecmd + s;
  l = s.length();
  mulinecmd = "";
  mulinefg = false;
  SetCurrentPrompt(spromptmul);
}

// Removing leading blanks
size_t p,q;

// On enleve le dernier caractere, si celui-ci est \n 
if (s[l-1] == '\n') s[l-1] = '\0';
p=s.find_first_not_of(" \t");
if (p < l) s = s.substr(p);
// >>>> Substitution d'alias (1er mot)
CmdStrList::iterator it;
p = 0;
q = s.find_first_of(" \t");
l = s.length();
string w1 =  (q < l) ? s.substr(p,q-p) : s.substr(p);
it = mAliases.find(w1);
if (it != mAliases.end())  { 
  s =  (q < l) ? ((*it).second + s.substr(q)) : (*it).second ;
  l = s.length();
  p=s.find_first_not_of(" \t");
  if (p < l) s = s.substr(p);
  p = 0;
  q = s.find_first_of(" ");
  }

// >>>> Separating keyword 
string toks,kw;
if (q < l)
  {  kw = s.substr(p,q-p);  toks = s.substr(q, l-q); }
else { kw = s.substr(p,l-p);  toks = ""; }

// les mot-cle end else endif doivent etre le seul mot de la ligne
if ( (kw == "end") || (kw == "else") || (kw == "endif") || (kw == "endscript") ) {
  size_t ltk = toks.length();
  if (toks.find_first_not_of(" \t") < ltk) {
    cerr << "Commander::Interpret()/syntax error near end else endif endscript \n"
         << "line: " << s << endl;
    _xstatus = 91;
    return(91);
  }
}

// On verifie si on est en train de definir un script
if (curscript) {
  if (kw == "endscript") {
    if (curscript->CheckScript()) {
      sit = mScripts.find(curscript->Name());
      if (sit != mScripts.end()) {
        cout << "Commander::Interpret() replacing script " 
             << curscript->Name() << endl;
        CommanderScript* scr = mScripts[curscript->Name()];
        mScripts.erase(sit);
        delete scr;
      }
      cout << "Commander::Interpret() Script " << curscript->Name() 
           << " defined successfully" << endl;
      mScripts[curscript->Name()] = curscript;
      SetCurrentPrompt("Cmd> ");
      curscript = NULL;
      _xstatus = 0;
      return(0);
    }
    else {
      cout << "Commander::Interpret() Error in Script " << curscript->Name() 
           << " definition " << endl;
      SetCurrentPrompt("Cmd> ");
      curscript = NULL;
      _xstatus = 92;
      return(92);
    }
  }
  else curscript->AddLine(s, kw);
  _xstatus = 0;
  return(0);
}
// On verifie si nous sommes dans un bloc (for , foreach)
if (CmdBlks.top() != NULL)  { // On est dans un bloc
  if ( (kw == "for") || (kw == "foreach")) felevel++;
  else if (kw == "end") felevel--;
  if (felevel == 0) { // Il faut executer le bloc
    CommanderBloc* curb = CmdBlks.top();
    CmdBlks.top() = curb->Parent();
    SetCurrentPrompt("Cmd> ");
    if (!curb->CheckBloc()) {
      cerr << "Commander::Interpret()/syntax error - unbalenced if ... endif"
           << " within for/foreach bloc ! " << endl;
      delete curb;
      _xstatus = 93;
      return(93);  
    }
       //       cout << " *DBG* Executing bloc " << endl;
    bool ohv = histon;
    histon = false;
    if (curtestresult) { 
      // We push also CommanderBloc and testresult on the stack
      CmdBlks.push(NULL);
      list<char> xtx;
      TestsStack.push(xtx);
      curb->Execute();
      // And CommanderBloc and TestResult from the corresponding stacks
      PopStack(false);
    }
    SetCurrentPrompt(defprompt);
    delete curb;
    histon = ohv;
  }
  else CmdBlks.top()->AddLine(s, kw); 
  _xstatus = 0;
  return(0);
}
else if (kw == "end") {
  cerr << "Commander::Interpret()/syntax error - end outside for/foreach bloc \n"
       << "line: " << s << endl;
  _xstatus = 94;
  return(94);  
}

// Sommes-nous dans un bloc de test if then else 
if (TestsStack.top().size() > 0) {  // Nous sommes ds un bloc if 
  if (kw == "else") {
    if ((*tresit) & 2) {
      cerr << "Commander::Interpret()/syntax error - multiple else in if bloc \n"
           << "line: " << s << endl;
      _xstatus = 95;
      return(95);
    }
    else { 
      const char * npr = ((*tresit)&1) ? "else-F> " : "else-T> ";
      if ((*tresit)&1)  curtestresult = false;
      SetCurrentPrompt(npr);
      (*tresit) |= 2;
      _xstatus = 0;
      return(0);
    }
  }
  else if (kw == "endif") {
    list<char>::iterator dbit = tresit;
    tresit--;
    TestsStack.top().erase(dbit);
    const char * npr = "Cmd> ";
    if (TestsStack.top().size() > 1) {
      curtestresult = true;
      list<char>::iterator it;
      for(it=TestsStack.top().begin(); it!=TestsStack.top().end(); it++) {
        // Si on n'est pas ds le else et le if est faux
        if ( !((*it)&2) && !((*it)&1) ) curtestresult = false;
        // Si on est ds else et le if etait vrai !
        if ( ((*it)&2) && ((*it)&1) )  curtestresult = false;
        if (!curtestresult)  break;
      }
      
      if (!((*tresit)&2)) 
        npr = ((*tresit)&1) ? "if-T> " : "if-F> ";
      else 
        npr = ((*tresit)&1) ? "else-F> " : "else-T> ";
    }
    else curtestresult = true;
    SetCurrentPrompt(npr);
    _xstatus = 0;
    return(0);
  }
} 
else if ((kw == "else") || (kw == "endif")) {
  cerr << "Commander::Interpret()/syntax error - else,endif outside if bloc \n"
       << "line: " << s << endl;
  _xstatus = 91;
  return(91);  
}

bool fgcont = true;
if (TestsStack.top().size() > 0) { // Resultat de if ou else
  list<char>::iterator it;
  for(it=TestsStack.top().begin(); it!=TestsStack.top().end(); it++) {
    // Si on n'est pas ds le else et le if est faux
    if ( !((*it)&2) && !((*it)&1) )  fgcont = false;
    // Si on est ds else et le if etait vrai !
    if ( ((*it)&2) && ((*it)&1) )  fgcont = false;
    if (!fgcont)  break;
  }
} 

if ((!fgcont) && (kw != "if"))  { 
  _xstatus = 0;
  return(0);
}


// Les mots cles break et return peuvent de sortir de boucles/scripts/execfile
if (kw == "break") return CMD_BREAK_RC;
else if (kw == "return")  { 
  _retstr = toks; 
  return CMD_RETURN_RC;
}

// Nous ne sommes donc pas dans un bloc ....  Substitution de variables
string s2;
int rcs ;

rcs = SubstituteVars(s, s2);
if (rcs) { 
  cerr << "Commander::Interpret()/syntax error in SubstituteVars() \n"
       << "line: " << s << endl;
  _xstatus = 99;
  return(99);
}
// >>>> Separating keyword and tokens 
vector<string> tokens;
vector<bool> qottoks;
/* decoupage en mots */
LineToWords(s2, kw, tokens, qottoks, toks, true);

// Si c'est un for/foreach, on cree un nouveau bloc
if ((kw == "foreach") || (kw == "for") || (kw == "forinfile") ) {
  //     cout << " *DBG* We got a foreach... " << endl;
  CommanderBloc* bloc = new CommanderBloc(this, CmdBlks.top(), kw, tokens);
  if (!bloc->CheckOK()) {
    cerr << "Commander::Interpret() for/foreach syntax Error ! " << endl;
    delete bloc;
    _xstatus = 91;
    return(91);
    }
  felevel++;
  if (CmdBlks.top())  CmdBlks.top()->AddBloc(bloc);
  else  SetCurrentPrompt("for...> ");
  CmdBlks.top() = bloc;
  //  cout << " *DBG* New Bloc created ... " << endl;
  return(0);
  }
else if (kw == "if") {  // Un test if
  bool restst = true;
  int rct = EvaluateTest(tokens, s, restst);
  if (rct) {
    cerr << "Commander::Interpret() if syntax Error ! " << "line: " << s << endl;
    _xstatus = 91;
    return(91);
  }
  char res_tst = (restst) ? 1 : 0;
  TestsStack.top().push_back(res_tst);
  if (TestsStack.top().size() == 1) tresit = TestsStack.top().begin();
  else tresit++;
  const char * npr = (restst) ? "if-T> " : "if-F> ";
  SetCurrentPrompt(npr);
}
else if ((tokens.size() > 0) && (tokens[0] == "=")) {  
  // x = Expression 
  if (qottoks[1]) {  // decodage sous forme de chaine 
    SetVariable(kw, tokens[1]);    
  }
  else {
    try {
      double res = 0.;
      if (tokens.size() > 2) {
        string sex = tokens[1];
        for(int js=2; js<tokens.size(); js++)  sex += tokens[js];
        CExpressionEvaluator cex(sex);
        res = cex.Value();
      }
      else {
        CExpressionEvaluator cex(tokens[1]);
        res = cex.Value();
      }
      char cbuff[64];
      sprintf(cbuff,"%g",res);
      string vv = cbuff;
      SetVariable(kw, vv);
    }
    catch (CExprException& cexerr) {
      cerr << "Commander::Interpret() evaluation Error : \n " << "line: " << s 
           << " \n Msg=" << cexerr.Msg()  << endl;
      _xstatus = 98;
      return(98);
    }
  }
}
else if (kw == "defscript") {  // definition de script
  if (tokens.size() > 0) {
    if (tokens.size() < 2)  tokens.push_back("");
    curscript = new CommanderScript(this, tokens[0], tokens[1]);
    SetCurrentPrompt("Script...> ");
    return(0);
  }
  else {
    cerr << "Commander::Interpret() No script name in defscript" << "line: " << s << endl;
    _xstatus = 91;
    return(91);
  }
}
else {
  //  Si c'est le nom d'un script 
  sit = mScripts.find(kw);
  if (sit != mScripts.end()) {
    bool ohv = histon;
    histon = false; 
    tokens.insert(tokens.begin(), kw);
    PushStack(tokens);
    (*sit).second->Execute(tokens);
    PopStack(true);
    histon = ohv;
  }
  //  Execution de commandes 
  else rc = ExecuteCommandLine(kw, tokens, toks);
  _xstatus = rc;
  return(rc);
}  
// cout << "Commander::Do() DBG  KeyW= " << kw << " NbArgs= " << tokens.size() << endl;
//  for(int ii=0; ii<tokens.size(); ii++)
//  cout << "arg[ " << ii << " ] : " << tokens[ii] << endl;

return(0);
}


/* --Methode-- */
int Commander::LineToWords(string& line, string& kw, vector<string>& tokens, 
                           vector<bool>& qottoks, string& toks, bool uq)
{
if (line.length() < 1)  return(0);
int nw = 1;
size_t p = line.find_first_not_of(" ");
line = line.substr(p);
p = 0;
size_t q = line.find_first_of(" ");
size_t l = line.length();

if (q < l)
  {  kw = line.substr(p,q-p);  toks = line.substr(q, l-q); }
else { kw = line.substr(p,l-p);  toks = ""; }

q = 0;
while (q < l)  {
  bool swq = false;  // true -> chaine delimite par ' ou " 
  p = toks.find_first_not_of(" \t",q+1); // au debut d'un token
  if (p>=l) break;
  if ( uq && ((toks[p] == '\'') || (toks[p] == '"')) ) {
    q = toks.find(toks[p],p+1);
    if (q>=l)  { 
      cerr << "Commander::LineToWords/Syntax Error - Unbalenced quotes " << toks[p] << '.' << endl;
      return(-1);
    }
    p++;  swq = true;  
  }
  else {
    q = toks.find_first_of(" \t",p); // la fin du token;
  }
  string token = toks.substr(p,q-p);
  tokens.push_back(token); 
  qottoks.push_back(swq);
  nw++;
  }

return(nw);
}

/* --Methode-- */
int Commander::SubstituteVars(string & s, string & s2)
//  Variable substitution  
{

int iarr = -1;  // index d'element de tableau
size_t p,q,q2,q3,l;

s2="";
p = 0;
l = s.length();
string vn, vv;
while (p < l) {
  iarr = -1;
  q = s.find('$',p);
  if (q > l) break;
  q2 = s.find('\'',p);
  if ((q2 < l) && (q2 < q)) {  // On saute la chaine delimitee par ' '
    q2 = s.find('\'',q2+1);
    if (q2 >= l) {
      cerr << " Syntax error - Unbalenced  quotes !!! " << endl;
      return(1);
      }
    s2 += s.substr(p, q2-p+1);
    p = q2+1;  continue;  
  }
  //  cout << "DBG: " << s2 << " p= " << p << " q= " << q << " L= " << l << endl;
  if ((q>0) && (s[q-1] == '\\')) {   // Escape character \$
     s2 += (s.substr(p,q-1-p) + '$') ; p = q+1;
     continue;
     }
  if (q >= l-1) {
      cerr << " Syntax error - line ending with $ !!! " << endl;
      return(2);
      }
  vn = "";
  if ( s[q+1] == '{' ) {  // Variable in the form ${name}
    q2 = s.find('}',q+1);
    if (q2 >= l) {
      cerr << " Syntax error -  Unbalenced  brace {} !!! " << endl;
      return(3);
      }
    vn = s.substr(q+2,q2-q-2);
    q2++;
  }
  else if ( s[q+1] == '(' ) {  // Variable in the form $(name)
    q2 = s.find(')',q+1);
    if (q2 >= l) {
      cerr << " Syntax error -  Unbalenced  parenthesis () !!! " << endl;
      return(3);
      }
    vn = s.substr(q+2,q2-q-2);
    q2++;
  }
  else if ( s[q+1] == '[' ) {  // Variable in the form $[varname]  -> This is $$varname
    q2 = s.find(']',q+1);
    if (q2 >= l) {
      cerr << " Syntax error - Unbalenced  brace [] !!! " << endl;
      return(4);
      }
    vn = s.substr(q+2,q2-q-2);
    if (!Var2Str(vn, vv)) return(5);
    vn = vv;
    q2++;
    }
  else { 
    q2 = s.find_first_of(" .:+-*/,[](){}&|!$\"'",q+1); 
    if (q2 > l) q2 = l;
    q3 = q2;
    vn = s.substr(q+1, q2-q-1); 
    // Si variable de type $varname[index] : element de tableau
    if ((q2 < l) && (s[q2] == '[') ) {
      q3 = s.find_first_of("]",q2+1);
      string sia = s.substr(q2+1, q3-q2-1);
      if (sia.length() < 1) {
        cerr << " Syntax error - in $varname[index] : $"  
             << vn << "[" << sia <<"]" << endl;
        return(4);
      }
      if (isalpha(sia[0])) {
        string sia2;
        if (!Var2Str(sia, sia2) || (sia2.length() < 1)) {
          cerr << " Syntax error - in $varname[index] : $"  
               << vn << "[" << sia <<"]" << endl;
        return(4);        
        }
        sia = sia2;
      }
      int rcdia = ctoi(sia.c_str(), &iarr);
      if (rcdia < 0) {
        cerr << " Syntax error - in $varname[iarr] : $" 
             << vn << "[" << sia <<"]" << endl;
        return(4);
      }
    }
  }
  if (iarr < 0) {
    if (!Var2Str(vn, vv)) return(5);
    s2 += (s.substr(p, q-p) + vv);
    p = q2;
  }
  else {
    if (! Var2Str(vn, iarr, vv) ) { 
      cerr << " Substitution error - word index out of range in "
           << "$varname[iarr] : $" << vn << "[" << iarr <<"]" << endl;
      return(4);
    }
    else s2 += (s.substr(p, q-p) + vv);
    p = q3+1;
  }
} 
if (p < l) s2 += s.substr(p);

p = s2.find_first_not_of(" \t");
if (p < l) s2 = s2.substr(p);

return(0);
}

/* --Methode-- */
bool Commander::Var2Str(string const & vn, string & vv)
{
if (vn.length() < 1) {
  cerr << " Commander::Var2Str/Error: length(varname=" << vn << ")<1 !" << endl;
  vv = "";    return(false);
}
// Variable de type $# $0 $1 ... (argument de .pic ou de script)
int ka = 0;
char buff[32];
  
if (vn == "#") {
  if (ArgsStack.empty()) {
    cerr << " Commander::Var2Str/Error: ArgsStack empty ! " 
         << " ($" << vn << ")" << endl;
    vv = "";  return(false);
  }
  char buff[32];
  long an = ArgsStack.top().size();
  if (an > 0) an--;  // Pour se conformer a l'usage de csh : Nb args sans le $0 
  sprintf(buff,"%ld", an);
  vv = buff;  return(true);
}
else if (vn == "*") {
  if (ArgsStack.empty()) {
    cerr << " Commander::Var2Str/Error: ArgsStack empty ! " 
         << " ($" << vn << ")" << endl;
    vv = "";  return(false);
  }
  vv = ArgsStack.top()[0];
  for(int ssk=1; ssk<ArgsStack.top().size(); ssk++)  vv += ArgsStack.top()[ssk];
  return(true);
}
else if (ctoi(vn.c_str(), &ka) > 0) {  // $0 $1 $2 ...
  if (ArgsStack.empty()) {
    cerr << " Commander::Var2Str/Error: ArgsStack empty ! " 
         << " ($" << vn << ")" << endl;
    vv = ""; return(false);
  }
  if ( (ka < 0) || (ka >= ArgsStack.top().size()) ) {
    cerr << " Commander::Var2Str/Error: ArgsStack index <0 or >=args.size()  ! " 
         << " ($" << vn << ")" << endl;
    vv = ""; return(false);
  }
  vv = ArgsStack.top()[ka];  return(true);
}
else if (vn[0] == '#') {  // Variable de type $#vname --> size(vname) 
  CmdVarList::iterator it = variables.find(vn.substr(1));
  if (it == variables.end()) {
    cerr << " Commander::Var2Str/Error #vname Undefined variable " 
         << vn << " ! " << endl;
    vv = "";  return(false);
  }
  sprintf(buff,"%d", (int)(*it).second.size());
  vv = buff; return(true);
} 
else if (vn == "status") {
  sprintf(buff,"%d", _xstatus);
  vv = buff;
  return true;
}
else if ((vn == "retstr") || (vn == "retval")) {
  vv = _retstr;
  return true;
}
else {  // Variable de l'interpreteur, ou de l'environnement application , env. global
  if (GetVar(vn, vv))  return true;
  else if (GetVarApp(vn, vv))  return true;
  else if (GetVarEnv(vn, vv))  return true;
  else { 
    cerr << " Commander::Var2Str/Error  Undefined variable " 
         << vn << " ! " << endl;
    vv = "";  return false;
  }
}

return false;
}

/* --Methode-- */
bool Commander::SetVariable(string const & vn, string const & vv)
{
  // On verifie si le nom est de type vname[idx]
  size_t p,q,l;
  l = vn.length();
  p = vn.find('[');
  if (p < l) {
    q = vn.find(']');
    if (q != (l-1)) {
      cout << "Commander::Str2Var/SetVar() - Bad varname with []: " 
           << vn << endl;
      return false;
    }
    string vna = vn.substr(0, p);
    string sia = vn.substr(p+1, q-(p+1));
    if (isalpha(sia[0])) {
      string sia2;
      if (!Var2Str(sia, sia2) || (sia2.length() < 1)) {
        cerr << "Commander::Str2Var/SetVar() Syntax error- varname[index]:"  
             << vn << endl;
        return false;     
      }
      sia = sia2;
    }
    int iarr;
    int rcdia = ctoi(sia.c_str(), &iarr);
    if (rcdia < 0) {
      cerr << "Commander::Str2Var/SetVar() Syntax error- varname[iarr]: " 
           << vn << endl;
      return false;
    }
    return SetVar(vna, iarr, vv);
  }
  else { 
    if (vn == "status") { 
      _xstatus = atoi(vv.c_str());
      return true;
    }
    else if (vn == "retstr") { 
      _retstr = vv;
      return true;
    }
    else return SetVar(vn, vv);
  }
}

/* --Methode-- */
bool Commander::GetVar(string const & vn, string & vv)
{
  CmdVarList::iterator it = variables.find(vn);
  if (it == variables.end()) {
    vv = "";
    return false;
  }
  vv = (*it).second[0]; 
  if ((*it).second.size() > 1) {   
    for(int k=1; k<(*it).second.size(); k++) {
      vv += ' ';  vv += (*it).second[k];
    }
  }
  return true;
}

/* --Methode-- */
bool Commander::GetVar(string const & vn, int idx, string & vv)
{
  vv = "";
  CmdVarList::iterator it = variables.find(vn);
  if (it == variables.end())  return false;
  if ((idx < 0) || (idx > (*it).second.size()-1))
    return false;
  vv = (*it).second[idx];
  return true;
}

/* --Methode-- */
bool Commander::GetVar(string const & vn, vector<string> & vv)
{
  vv.clear();
  //  vv.erase(vv.begin(),vv.end());
  CmdVarList::iterator it = variables.find(vn);
  if (it == variables.end())  return false;
  vv = (*it).second;
  return true;
}

/* --Methode-- */
bool Commander::SetVar(string const & vn, string const & val)
{
  if ( !CheckVarName(vn) )  {
    cerr << "Commander::SetVar( " << vn << " ...) Bad VarName " << endl;
    return(false);
  }
  bool fg = false;
  vector<string> nouv;
  nouv.push_back(val);
  CmdVarList::iterator it = variables.find(vn);
  if (it == variables.end())  variables[vn] = nouv;
  else { 
    (*it).second = nouv;
    fg = true;
  }
  return fg;
}

/* --Methode-- */
bool Commander::SetVar(string const & vn, int idx, string const & val)
{
  if ( !CheckVarName(vn) )  {
    cerr << "Commander::SetVar( " << vn << " ,idx, ...) Bad VarName " << endl;
    return(false);
  }
  if ((vn == "status") || (vn == "retstr")) {
    cerr << "Commander::SetVar(vn,idx,val) ERROR - special var status/retstr " 
         << endl;
    return(false);
  }
  if (idx < 0) {
    cout << "Commander::SetVar(vn," << idx << ",...) Error idx < 0" << endl;
    return(false);
  }
  bool fg = false;
  CmdVarList::iterator it = variables.find(vn);
  if (it == variables.end()) {
    vector<string> nouv;
    for(int j=0; j<idx; j++)  nouv.push_back("");
    nouv.push_back(val);
    variables[vn] = nouv;
  }
  else { 
    if (idx >= (*it).second.size())
      for(int j=(*it).second.size(); j<=idx; j++)  (*it).second.push_back("");
    (*it).second[idx] = val;
    fg = true;
  }
  return fg;
}

/* --Methode-- */
bool Commander::SetVar(string const & vn, vector<string> const & val)
{
  if ( !CheckVarName(vn) )  {
    cerr << "Commander::SetVar( " << vn << " ...) Bad VarName " << endl;
    return(false);
  }
  if ((vn == "status") || (vn == "retstr")) {
    cerr << "Commander::SetVar(vn, vector<string>) ERROR - special var status/retstr " 
         << endl;
    return(false);
  }
  bool fg = false;
  CmdVarList::iterator it = variables.find(vn);
  if (it == variables.end())  variables[vn] = val;
  else { 
    (*it).second = val;
    fg = true;
  }
  return fg;
}

/* --Methode-- */
bool Commander::CheckVarName(string const & vn)
{
  size_t l,k;
  l = vn.length();
  if (l < 1)  return false;
  if (!isalpha(vn[0]))  return false;
  for(k=1; k<l; k++) 
    if ((!isalnum(vn[k])) && (vn[k] != '_'))  return false;
  return true;  
}

/* --Methode-- */
bool Commander::DeleteVar(string const & vn)
{
  CmdVarList::iterator it = variables.find(vn);
  if (it == variables.end())  { 
    cerr << "Commander::DeleteVar() Var " << vn << " undefined!" << endl;
    return false;
  }
  variables.erase(it);
  return true;
}

/* --Methode-- */
void Commander::ListVar()
{
  cout << " ---- Commander::ListVar() List of defined variables ---- " 
       << endl;
  CmdVarList::iterator it;
  for(it = variables.begin(); it != variables.end(); it++) {
    string vn = (*it).first;  
    int vs = (*it).second.size();
    cout << vn << " -> Size= " << vs  << endl;
  }
  cout << "---------------------------------------------------------- " 
       << endl;
}

/* --Methode-- */
bool Commander::GetVarApp(string const & vn, string & vv)
{
  vv = "";
  //  cout << " Commander::GetVarApp() Not available ! " << endl;
  return false;
}

/* --Methode-- */
bool Commander::SetVarApp(string const & vn, string const & vv)
{
  //  cout << " Commander::SetVarApp() Not available ! " << endl;
  return false;  
}

/* --Methode-- */
bool Commander::DeleteVarApp(string const & vn)
{
  //  cout << " Commander::DeleteVarApp() Not available ! " << endl;
  return false;  
}

/* --Methode-- */
void Commander::ListVarApp()
{
  //  cout << " Commander::ListVarApp() Not available ! " << endl;
  return;  
}


/* --Methode-- */
bool Commander::GetVarEnv(string const & vn, string & vv)
{
  char* vev = getenv(vn.c_str());
  if (vev) {
    vv = vev;
    return true;
  }
  else { 
    vv = "";
    return false;
  }
}

/* --Methode-- */
bool Commander::SetVarEnv(string const & vn, string const & vv)
{
  string pev = vn;
  pev += '=';
  pev += vv;
  if (putenv(pev.c_str()) == 0)  return true;
  else return false;  
}

/* --Methode-- */
bool Commander::DeleteVarEnv(string const & vn)
{
  //  cout << " Commander::DeleteVarEnv() Not available ! " << endl;
  return false;  
}

/* --Methode-- */
void Commander::ListVarEnv()
{
  cout << " Commander::ListVarEnv() Not available ! " << endl;
  return;  
}


/* --Methode-- */
string Commander::GetTmpDir()
{
  return("/tmp");
}

/* --Methode-- */
void Commander::SetCurrentPrompt(const char* pr)
{
  curprompt = pr;
}

/* --Methode-- */
void Commander::ShowMessage(const char * msg, int att)
{
  cout << msg ;
}



/* --Methode-- */
int Commander::EvaluateTest(vector<string> & args, string & line, bool & res)
{
  res = true;
  if ((args.size() != 6) || (args[5] != "then") || 
      (args[0] != "(") || (args[4] != ")") ) return(1);
  if (args[2] == "==") res = (args[1] == args[3]);
  else if (args[2] == "!=") res = (args[1] != args[3]);
  else if (args[2] == "<") 
    res = (atof(args[1].c_str()) < atof(args[3].c_str()));
  else if (args[2] == ">") 
    res = (atof(args[1].c_str()) > atof(args[3].c_str()));
  else if (args[2] == "<=") 
    res = (atof(args[1].c_str()) <= atof(args[3].c_str()));
  else if (args[2] == ">=") 
    res = (atof(args[1].c_str()) >= atof(args[3].c_str()));
  else return(2);
  return(0);
}

  
/* --Methode-- */
int Commander::EvalRPNExpr(vector<string> & args, string & line)
{
  // A virer - Reza 15/03/2004 
  return(0);
}

/* --Methode-- */
void Commander::PushStack(vector<string>& args)
{
  // We push the argument list (args) on the stack
  ArgsStack.push(args);
  // We push also CommanderBloc and testresult on the stack
  CmdBlks.push(NULL);
  list<char> xtx;
  TestsStack.push(xtx);

}

/* --Methode-- */
void Commander::PopStack(bool psta)
{
  // We remove the argument list (args) from the stack
  if (psta) ArgsStack.pop();
  // And CommanderBloc and TestResult from the corresponding stacks
  CommanderBloc* curb = CmdBlks.top();
  while (curb != NULL) {
    CommanderBloc* parb = curb->Parent();
    delete curb;  curb = parb;
  }
  CmdBlks.pop();
  TestsStack.pop();
}

/* --Methode-- */
int Commander::ExecuteCommandLine(string & kw, vector<string> & tokens, string & toks)
{
int rc = 0;

// >>>>>>>>>>> Commande d'interpreteur
if (kw == "help") {
  if (tokens.size() > 0) cout << GetUsage(tokens[0]) << endl;
  else {  
    string kwh = "Commander";
    cout << GetUsage(kwh) << endl;
    }
  }
else if (kw == "sleep") {
  if (tokens.size() < 1) { 
    cout << "Commander::Interpret() Usage: sleep nsec " << endl;  
    return(1); 
  }
  int nsec = atoi(tokens[0].c_str());
  cout << "Commander::Interpret() sleep " << nsec << " seconds" << endl;
  sleep(nsec);
}

else if (kw == "set") {
  if (tokens.size() < 2) { 
    cout << "Commander::Interpret() Usage: set varname value or set vecvar ( w1 w2 ... ) " << endl;  
    return(1); 
  }
  
  if (tokens.size() == 2) 
    SetVariable(tokens[0], tokens[1]);
  else {
    if ( (tokens[1] != "(") || (tokens[tokens.size()-1] != ")") ) {
    cout << "Commander::Interpret() Usage: set vecvar ( w1 w2 ... ) " << endl;  
    return(1); 
    }
    string vname = tokens[0];
    vector<string>::iterator vit;
    vit = tokens.begin(); tokens.erase(vit);
    vit = tokens.begin(); tokens.erase(vit);
    tokens.pop_back();
    SetVar(vname, tokens);
  }
  return 0;
}
else if (kw == "var2words") {
  if (tokens.size() < 2) { 
    cout << "Commander::Interpret() Usage: var2words varname wordvarname [sep]" << endl;  
    return(1); 
  }
  char sep = ' ';
  if (tokens.size() > 2) sep = tokens[2][0];
  string vv;
  if (!GetVar(tokens[0], vv)) {
    cout << "Commander::Interpret() var2words/Error No variable with name " << tokens[0] << endl;  
    return 2;
  }
  vector<string> vs;
  FillVStringFrString(vv, vs, sep);
  SetVar(tokens[1], vs); 
}
else if (kw == "alias") {
  if (tokens.size() < 2) { cout << "Commander::Interpret() Usage: alias aliasname string" << endl;  return(0); }
  if ((tokens[0].length() < 1) || !isalpha((int)tokens[0][0]) ) {
    cerr << "Commander::Interpret()/Error alias name should start with alphabetic" << endl;
    return(1);
  }
  string xx = tokens[1];
  for (int kk=2; kk<tokens.size(); kk++)  xx += (' ' + tokens[kk]);
  mAliases[tokens[0]] = xx;
}

else if ( (kw == "unset") || (kw == "clearvar") ) {
  if (tokens.size() < 1) { 
    cout << "Commander::Interpret() Usage: unset/clearvar varname" << endl;  
    return(1); 
  }
  else DeleteVar(tokens[0]);
}
// Evaluation d'expression en notation polonaise inverse
else if (kw == "rpneval") {
  try {
    RPNExpressionEvaluator rpn(tokens, 1);
    double res = rpn.Value();
    char cbuff[64];
    sprintf(cbuff,"%g",res);
    string vv = cbuff;
    SetVariable(tokens[0],vv);
    return 0;
  }
  catch (RPNExprException& rpnerr) {
    cerr << " rpneval: Syntax error - Msg=" << rpnerr.Msg() 
         << " \n Line=" << toks << endl;
    return 98;
  }
}
else if (kw == "echo") {
  for (int ii=0; ii<tokens.size(); ii++)
    cout << tokens[ii] << " " ;
  cout << endl;
 }
else if (kw == "echo2file") {
  if (tokens.size() < 1) {
    cout << "Commander::Interpret() Usage: echo2file filename [string ] " << endl;  
    return(1);
  }
  ofstream ofs(tokens[0].c_str(), ios::app);
  for (int ii=1; ii<tokens.size(); ii++)
    ofs << tokens[ii] << " " ;
  ofs << endl;
 }
else if (kw == "readstdin") {
  if (tokens.size() < 1) { cout << "Commander::Interpret() Usage: readstdin varname" << endl;  return(0); }
  if ((tokens[0].length() < 1) || !isalpha((int)tokens[0][0]) ) {
    cerr << "Commander::Interpret()/Error Variable name should start with alphabetic" << endl;
    return(0);
    }
  ShowMessage(">>> Reading From StdIn \n", _MAGENTA_);
  cout << tokens[0] << " ? " << endl;
  SetVar(tokens[0], GetStringFrStdin(this) );
  }

else if (kw == "listvar") ListVar();
else if (kw == "listalias") {
  cout << "Commander::Interpret()  Alias List , AliasName = Value \n";
  CmdStrList::iterator it;
  for(it = mAliases.begin(); it != mAliases.end(); it++)  
    cout << (*it).first << " = " <<  (*it).second << "\n";
  cout << endl;
  }
else if (kw == "listcommands") {
  cout << "---- Commander::Interpret() Command List ----- \n";
  CmdExmap::iterator it;
  int kc = 0;
  for(it = cmdexmap.begin(); it != cmdexmap.end(); it++) {
    cout << (*it).first << "  ";
    kc++;
    if (kc >= 5) { cout << "\n"; kc = 0; }
    }
  cout << endl;
  }
else if (kw == "listscripts") {
  cout << "---- Commander::Interpret() Script List ----- \n";
  for(ScriptList::iterator sit = mScripts.begin(); 
      sit != mScripts.end(); sit++)
    cout << " Script: " << (*sit).second->Name() << " - " 
         << (*sit).second->Comment() << endl;
}
else if (kw == "clearscript") {
  if (tokens.size() < 1) { 
    cout << "Commander::Interpret() Usage: clearscript scriptname" << endl;  
    return(0); 
  }
  ScriptList::iterator sit = mScripts.find(tokens[0]);
  if (sit == mScripts.end()) {
    cout << "Commander::Interpret() No script with name" << tokens[0] << endl;
    return(0);
  }
  else {
    delete (*sit).second;
    mScripts.erase(sit);
    cout << "Commander::Interpret() script " << tokens[0] << " cleared" << endl;
    return(0);
  }
}
else if (kw == "traceon")  { cout << "Commander::Interpret()  -> Trace ON mode " << endl; trace = true; }
else if (kw == "traceoff") { cout << "Commander::Interpret()  -> Trace OFF mode " << endl; trace = false; }
else if (kw == "timingon") { 
  cout << "Commander::Interpret()  -> Timing ON mode " << endl; 
  if (gltimer)   delete gltimer;   gltimer = new Timer("PIA-CmdInterpreter ");   timing = true; 
  }
else if (kw == "timingoff") { 
  cout << "Commander::Interpret()  -> Timing OFF mode " << endl; 
  if (gltimer)  delete gltimer;  gltimer = NULL;  timing = false; 
  }
else if (kw == "exec") {
  if (tokens.size() < 1) { cout << "Commander::Interpret() Usage: exec filename" << endl;  return(0); }
  ExecFile(tokens[0], tokens);
  }
else if (kw == "autoiniranf") { 
  Auto_Ini_Ranf(1);
  return(0);
}
else if (kw == "shell") {
  if (tokens.size() < 1) { cout << "Commander::Interpret() Usage: shell cmdline" << endl;  return(0); }
  string cmd;
  for (int ii=0; ii<tokens.size(); ii++)
    cmd += (tokens[ii] + ' ');
  system(cmd.c_str());
  }
else if (kw == "cshell") {
  if(tokens.size()<1) {cout<<"Commander::Interpret() Usage: cshell cmdline"<<endl; return(0);}
  string cmd="";
  for(int ii=0;ii<tokens.size();ii++) cmd+=(tokens[ii]+' ');
  CShellExecute(cmd);
  }

//  Execution d'une commande enregistree
else rc = ExecuteCommand(kw, tokens, toks);

if (timing)  gltimer->Split();
return(rc);
}

/* --Methode-- */
int Commander::ParseLineExecute(string& line, bool qw)
  // Si qw == true, on decoupe entre '' ou "" ou espaces
{
vector<string> tokens;
vector<bool> qottoks;
string kw, toks;
if (line.length() < 1)  return(0);
LineToWords(line, kw, tokens, qottoks, toks, qw);
return(ExecuteCommand(kw, tokens, toks));  
}

/* --Methode-- */
int Commander::ExecuteCommand(string& keyw, vector<string>& args, string& toks)
{
  int rc = -1;
  CmdExmap::iterator it = cmdexmap.find(keyw);
  if (it == cmdexmap.end())  cout << "No such command : " << keyw << " ! " << endl;
  else { 
    if ((*it).second.cex) rc = (*it).second.cex->Execute(keyw, args, toks);
    else cout << "Dont know how to execute " << keyw << " ? " << endl;
    }
  return(rc);
}

/* --Methode-- */
int Commander::ExecFile(string& file, vector<string>& args)
{
char line_buff[512];
FILE *fip;
int rcc = 0;
if ( (fip = fopen(file.c_str(),"r")) == NULL ) {
  if (file.find('.') >= file.length()) {
    cout << "Commander::Exec(): Error opening file " << file << endl;
    file += ".pic";
    cout << "                Trying file " << file << endl;
    fip = fopen(file.c_str(),"r");
    }
  }

if(fip == NULL) {
  cerr << "Commander::Exec() Error opening file " << file << endl;
  hist << "##! Commander::Exec() Error opening file " << file << endl;
  return(0);
  }

// hist << "### Executing commands from " << file << endl;
PushStack(args);
if (trace) { 
  ShowMessage("### Executing commands from ", _MAGENTA_);
  ShowMessage(file.c_str(), _MAGENTA_);
  ShowMessage("\n", _MAGENTA_);
  }

bool ohv = histon;
histon = false; 
while (fgets(line_buff,511,fip) != NULL)
  {
  if (trace) ShowMessage(line_buff, _MAGENTA_);
  line_buff[strlen(line_buff)-1] = '\0';   /*  LF/CR de la fin */
  string line(line_buff);
  rcc = Interpret(line);
  if ((rcc == CMD_RETURN_RC) || (rcc == CMD_BREAKEXE_RC)) break;
  }
histon = ohv; 

// hist << "### End of Exec( " << file << " ) " << endl;
if (trace) { 
  ShowMessage("### End of Exec( ", _MAGENTA_);
  ShowMessage(file.c_str(), _MAGENTA_);
  ShowMessage(" ) \n", _MAGENTA_);
  }

PopStack(true);

return(0);
}

/* --Methode-- */
int Commander::CShellExecute(string cmd)
{
 if(cmd.size()<=0) return -1;

 string fname = GetTmpDir(); fname += "cshell_exec_pia.csh";

 string cmdrm = "rm -f " + fname;
 system(cmdrm.c_str());

 FILE *fip = fopen(fname.c_str(),"w");
 if(fip==NULL)   { 
   cout << "Commander/CShellExecute_Error: fopen("<<fname<<") failed"<<endl; 
   return -2; 
 }
 fprintf(fip,"#!/bin/csh\n\n");
 fprintf(fip,"%s\n",cmd.c_str());
 fprintf(fip,"\nexit 0\n");
 fclose(fip);

 cmd = "csh "; cmd += fname;
 system(cmd.c_str());

 system(cmdrm.c_str());

 return 0;
}

static string* videstr = NULL;
/* --Methode-- */
string& Commander::GetUsage(const string& kw)
{
bool fndok = false;
CmdExmap::iterator it = cmdexmap.find(kw);
if (it == cmdexmap.end()) {
  it = helpexmap.find(kw);
  if (it != helpexmap.end())  fndok = true;
  }
  else  fndok = true; 
if (fndok)   return( (*it).second.us ); 
// Keyword pas trouve
if (videstr == NULL) videstr = new string("");
*videstr =  "Nothing known about " + kw + " ?? ";
return(*videstr);
 
}


/*  Les definitions suivantes doivent se trouver ds l'en-tete du fichier LaTeX 
  \newcommand{\piacommand}[1]{
    \framebox{\bf \Large #1 } \index{#1} % (Command) 
  }

  \newcommand{\piahelpitem}[1]{
    \framebox{\bf \Large #1 } \index{#1} (Help item)
  }

  \newcommand{\myppageref}[1]{ (p. \pageref{#1} ) }
*/

// Fonction qui remplace tout caractere non alphanumerique en Z
static void check_latex_reflabel(string & prl)
{
  for(int k=0; k<prl.length(); k++) 
    if (! isalnum(prl[k]) )  prl[k] = 'Z';
}

// Fonction qui remplace _ en \_
static string check_latex_underscore(string const & mot)
{
  string rs;
  for(int k=0; k<mot.length(); k++) {
    if (mot[k] == '_')  rs += "\\_"; 
    else rs += mot[k];
  }
  return rs;
}

/* --Methode-- */
void Commander::HelptoLaTeX(string const & fname)
{
FILE *fip;
if ((fip = fopen(fname.c_str(), "w")) == NULL)   { 
  cout << "Commander::HelptoLaTex_Error: fopen( " << fname << endl; 
  return;
  }

fputs("% ----- Liste des groupes de Help ----- \n",fip);
fputs("List of {\\bf piapp} on-line Help groups: \n", fip);
fputs("\\begin{itemize} \n",fip);
string prl;
string mol;
CmdHGroup::iterator it;
for(it = cmdhgrp.begin(); it != cmdhgrp.end(); it++) {
  if ((*it).first == "All") continue;
  prl = (*it).first;  check_latex_reflabel(prl);
  mol = check_latex_underscore((*it).first);
  fprintf(fip,"\\item {\\bf %s }  (p. \\pageref{%s}) \n", 
          mol.c_str(), prl.c_str());
}

fputs("\\end{itemize} \n",fip);

fputs("\\vspace*{10mm} \n",fip);

CmdExmap::iterator ite;
fputs("% ----- Liste de toutes les commandes et help item ----- \n",fip);
fputs("\\vspace{5mm} \n",fip);
// fputs("\\begin{table}[h!] \n", fip);
fputs("\\begin{center} \n ", fip);
fputs("\\rule{2cm}{1mm} List of {\\bf piapp} Help items \\rule{2cm}{1mm} \\\\ \n", fip);
fputs("\\vspace{3mm} \n",fip);
fputs("\\begin{tabular}{llllll}  \n", fip);
int kt = 0;
for(ite = helpexmap.begin(); ite != helpexmap.end(); ite++) {
  prl = (*ite).first;  check_latex_reflabel(prl);
  mol = check_latex_underscore((*ite).first);
  fprintf(fip,"%s & p. \\pageref{%s} ", mol.c_str(),  prl.c_str() );
  kt++;
  if (kt < 3) fputs(" & ", fip);
  else  { fputs(" \\\\  \n", fip);  kt = 0; }
  }
if (kt == 1) fputs("  &  &  &   \\\\  \n", fip);
else if (kt == 2)  fputs("  &   \\\\  \n", fip);
fputs("\\end{tabular} \n", fip);
fputs("\\end{center} \n", fip);
//fputs("\\end{table} \n", fip);
fputs("\\newpage  \n",fip);

int gid;
for(it = cmdhgrp.begin(); it != cmdhgrp.end(); it++) {
  gid = (*it).second.gid;
  if (gid == 0)  continue;
  //  fputs("\\begin{table}[h!] \n",fip);
  fputs("\\vspace{6mm} \n",fip);
  fputs("\\begin{center} \n ", fip);
  fprintf(fip, "\\rule{2cm}{0.5mm} \\makebox[60mm]{{ \\bf %s } help group} \\rule{2cm}{0.5mm} \\\\ \n", 
          (*it).first.c_str());
  fputs("\\vspace{3mm} \n",fip);
  fputs("\\begin{tabular}{llllll} \n", fip);
  kt = 0;
  for(ite = helpexmap.begin(); ite != helpexmap.end(); ite++) {
    if ((*ite).second.group != gid)  continue;
    prl = (*ite).first;  check_latex_reflabel(prl);
    mol = check_latex_underscore((*ite).first);
    fprintf(fip,"%s & p. \\pageref{%s} ", mol.c_str(),  prl.c_str() );
    kt++;
    if (kt < 3) fputs(" & ", fip);
    else  { fputs(" \\\\  \n", fip);  kt = 0; }
  }
  for(ite = cmdexmap.begin(); ite != cmdexmap.end(); ite++) {
    if ((*ite).second.group != gid)  continue;
    prl = (*ite).first;  check_latex_reflabel(prl);
    mol = check_latex_underscore((*ite).first);
    fprintf(fip,"%s & p. \\pageref{%s} ", mol.c_str(),  prl.c_str() );
    kt++;
    if (kt < 3) fputs(" & ", fip);
    else  { fputs(" \\\\  \n", fip);  kt = 0; }
  }
  if (kt == 1) fputs("  &  &  &   \\\\  \n", fip);
  else if (kt == 2)  fputs("  &   \\\\  \n", fip);
  fputs("\\end{tabular} \n", fip);
  fputs("\\end{center} \n", fip);
  //  fputs("\\end{table} \n",fip);
  //  fputs("\\vspace{5mm} \n",fip);
}
// fputs("\\newline \n",fip);

fputs("% ----- Liste des commandes dans chaque groupe ----- \n",fip);
fputs("\\newpage \n",fip);

for(it = cmdhgrp.begin(); it != cmdhgrp.end(); it++) {
  gid = (*it).second.gid;
  if (gid == 0)  continue;
  prl = (*it).first;  check_latex_reflabel(prl);
  fprintf(fip,"\\subsection{%s} \\label{%s} \n", 
          (*it).first.c_str(), prl.c_str());
  if ((*it).second.desc.length() > 0) 
    fprintf(fip,"%s \n \\\\[2mm]  ", (*it).second.desc.c_str());
  fprintf(fip,"\\noindent \n");
  for(ite = helpexmap.begin(); ite != helpexmap.end(); ite++) {
    if ((*ite).second.group != gid)  continue;
    prl = (*ite).first;  check_latex_reflabel(prl);
    mol = check_latex_underscore((*ite).first);
    fprintf(fip,"\\piahelpitem{%s} \\label{%s} \n", 
            mol.c_str(), prl.c_str());
    fputs("\\begin{verbatim} \n",fip);
    fprintf(fip,"%s\n", (*ite).second.us.c_str());
    fputs("\\end{verbatim} \n",fip);
    }
  for(ite = cmdexmap.begin(); ite != cmdexmap.end(); ite++) {
    if ((*ite).second.group != gid)  continue;
    prl = (*ite).first;  check_latex_reflabel(prl);
    mol = check_latex_underscore((*ite).first);
    fprintf(fip,"\\piacommand{%s} \\label{%s} \n", 
            mol.c_str(), prl.c_str());
    fputs("\\begin{verbatim} \n",fip);
    fprintf(fip,"%s\n", (*ite).second.us.c_str());
    fputs("\\end{verbatim} \n",fip);
    }
}

fclose(fip);
cout << " Commander::HelptoLaTeX() - LaTeX format help written to file " <<  fname << endl;
 
return;
}


}  // End of namespace SOPHYA