campo-sirio/include/files.cpp

#include <stdio.h>

#include <applicat.h>
#include <expr.h>
#include <files.h>
#include <utility.h>
#include <config.h>

#include <extcdecl.h>
#include <lffiles.h>

#define BLOCKLEN 512
#define INVFLD    255

HIDDEN char _files_tmp_string[256];

TFile::TFile (int lenrec, int base)
{
  _file = new SecDef;
  _file->IOR = NOERR;
  _len = lenrec;
  _base = base;
  _file->LockMode = _manulock;
  _file->lpos = -1;
  _file->name[0] = '\0';
}

TFile::~TFile ()
{
  delete _file;
}

// @doc EXTERNAL

// @mfunc Apre il file specificato
void TFile::open (
  const char *name,   // @parm Nome del file da aprire
  TFilelock lockmode) // @parm Tipo di lock da attivare durante l'apertura del file
  //       (default _manulock)
{
  COpen (_file, (char *) name, _len, _base, lockmode);
}

bool TFile::verify (const char *name)

{
  CVerify (_file, (char *) name);
  return _file->IOR == NOERR;
}

// @doc EXTERNAL

// @mfunc Crea il file specificato
void TFile::create (
  const char *name,   // @parm Nome del file da creare
  TRecnotype nrecord) // @parm Numero di recird che deve avere il file al momento
  //              della creazione (default 0)
  
  // @comm Il file creato avra' dimensioni sufficienti a contenere <p nrecord> record

{
  CCreate (_file, (char *) name, _len, _base, (nrecord * _len) / BLOCKLEN + 1);
}

void TFile::chsize (const char *name, TRecnotype nrecord)

{
  CChsize (_file, (char *) name, _len, _base, (nrecord * _len) / BLOCKLEN + 1);
}

void TFile::close ()

{
  CClose (_file);
}

void TFile::unlink (const char *name)

{
  CDelete (_file, (char *) name);
}

// @doc EXTERNAL

// @mfunc Legge un record dal file
void TFile::read (
  char *record,      // @parm Record letto
  TRecnotype recnum, // @parm Numero del record da leggere
  TReclock lock)     // @parm Tipo di blocco da attivare durante la letture (default _nolock)

{
  _file->LenRec = _len;
  _file->BaseFil = _base;
  CRead (_file, record, recnum, lock);
}

// @doc EXTERNAL

// @mfunc Scrive un record sul file
void TFile::write (
  char *record,      // @parm Record da scrivere
  TRecnotype recnum, // @parm Numero del record da scrivere
  TReclock lock)     // @parm Tipo di blocco da attivare durante la letture (default _nolock)

{
  _file->LenRec = _len;
  _file->BaseFil = _base;
  CWrite (_file, record, recnum, lock);
}

int TFile::status () const

{
  return _file->IOR;
}

TDir::TDir () : _num(-1), _com(FALSE)

{
  _dir = new FileDes;
  if (_dir == NULL)
    fatal_box ("Can't allocate dir");
  zero ();
}

TDir::TDir(const TDir & d) 
{             
  _dir = new FileDes;
  *_dir = *d._dir;
  _num = d._num;
  _com = d._com;  
}

TDir::~TDir ()
{
  delete _dir;
}

const char *TDir::name () const
{ 
  return _dir->SysName;
}

const char *TDir::filename () const
{ 
  strcpy(_files_tmp_string, CAddPref(_dir->SysName)); 
  for (int i=strlen(_files_tmp_string); i>0; i--)
  {
    const char c = _files_tmp_string[i-1];
    if (c == '\\' || c == '/')
    {
      strcat(_files_tmp_string, ".dbf");
      break;
    }
    else
      if (c == '.') 
        break;
  }
  return _files_tmp_string;
}

void TDir::set_name (const char * name)
{                       
  CHECK(name != NULL, "NULL Filename");     
  CHECK(strlen(name) < 42, "Name too long");

  for (int i=strlen(name); i>0; i--)
  {
    char c = name[i-1];
    if (c == '\\' || c == '/')
      break;
    else
      if (c == '.') 
        c = '\0';
        break;
  }

  strncpy(_dir->SysName, name, 42);
  _dir->SysName[41] = '\0';
}

const char *TDir::des () const
{           
  return _dir->Des;
}

const char* TDir::tab_des(const char* tab)
{                                         
  const char* t = tab; if (t[0] == '$' || t[0] == '%') t++;

  TString& tmp = get_tmp_string();          
  tmp << DESCDIR << "/d" << t << ".des";  

  TConfig cnf(tmp, DESCTAB);
  tmp = cnf.get("Description", NULL, -1, tab);
  
  return tmp;
}


const char *TDir::expr () const
{
  return _dir->FCalc;
}

TRecnotype & TDir::eod () const

{
  return _dir->EOD;
}

TRecnotype & TDir::eox () const

{
  return _dir->EOX;
}

long& TDir::flags () const

{
  return _dir->Flags;
}

word & TDir::len () const

{
  return (word &) _dir->LenR;
}

int TDir::status (TDirtype dirop) const

{
  return fdir[dirop].IOR;
}

void TDir::set_len (const UINT16 len)
{
  _dir->LenR = len;
}

void TDir::set_eox (const RecNoType eox)
{
  _dir->EOX = eox;
}

void TDir::set_eod (const RecNoType eod)
{
  _dir->EOD = eod;
}

void TDir::set (const char *name, const RecNoType eod, const RecNoType flag, const char *des, const char *calc)
{
  strncpy (_dir->SysName, name, sizeof (_dir->SysName));
  _dir->EOD = eod;
  _dir->Flags = flag;
  strncpy (_dir->Des, des, sizeof (_dir->Des));
  strncpy (_dir->FCalc, calc, sizeof (_dir->FCalc));
}

// @doc EXTERNAL

// @mfunc Aggiorna l'oggetto TDir con i parametri del file  
void TDir::get (
  int nfile,         // @parm Numero del file con cui aggiornare l'oggetto
  TReclock lock,     // @parm Tipo di blocco (default _nolock)
  TDirtype dirtype,  // @parm Direttorio nella quale e' contenuto il file (default _nordir)
  TDirop op)         // @parm Tipo di operazioni effettuabili sul file (default _nordirop)

{
  int whichdir = (dirtype == _nordir ? NORDIR : COMDIR);

  if (op == _nordirop)
    COpenFile (nfile, _dir, int(lock), whichdir);
  else
    CGetFile (nfile, _dir, int(lock), whichdir);
  _num = nfile;
  _com = _dir->SysName[0] != '$';
}

// @doc EXTERNAL

// @mfunc Aggiorna il file indicato con i parametri passati
void TDir::put (
  int nfile,         // @parm Numero del file da aggiornare
  TDirtype dirtype,  // @parm Direttorio nella quale e' contenuto il file (default _nordir)
  TDirop op)         // @parm Tipo di operazioni effettuabili sul file (default _nordirop)
{
  CHECKD(nfile > 0, "Bad file number ", nfile);

  const int whichdir = (dirtype == _nordir ? NORDIR : COMDIR);

  if (op == _nordirop)
    CCloseFile (nfile, _dir, whichdir);
  else
    CPutFile (nfile, _dir, whichdir);
}

void TDir::zero ()

{
  zerofdes (_dir);
}

void TDir::print_on (ostream & out) const

{
  CHECK(_dir,"Can't print a NULL _dir");
  out << _num << '\n';
  out << (int)_com << '\n';
  out << _dir->SysName << '|';
  out << _dir->EOD << '|';
  out << _dir->EOX << '|';
  out << _dir->LenR << '|';
  out << _dir->Flags << '|';
  out << _dir->Des << '|';
  out << _dir->FCalc << '|';
  out << _dir->GenPrompt << '|' << '\n';
}

void TDir::read_from (istream & in)

{
  CHECK(_dir,"Can't read into a NULL _dir");
  in.getline (_files_tmp_string, sizeof (_files_tmp_string), '\n');
  _num = atoi(_files_tmp_string);
  in.getline (_files_tmp_string, sizeof (_files_tmp_string), '\n');
  _com = atoi(_files_tmp_string) != 0;
  in.getline (_files_tmp_string, sizeof (_files_tmp_string), '\n');
  TToken_string line(_files_tmp_string,'|');
  line.restart();
  strcpy(_dir->SysName,line.get());
  _dir->EOD = line.get_long();
  _dir->EOX = line.get_long();
  _dir->LenR = line.get_int();
  _dir->Flags = line.get_long();
  strcpy(_dir->Des,line.get());
  strcpy(_dir->FCalc,line.get());
  strcpy(_dir->GenPrompt,line.get());
}

// @doc EXTERNAL

// @mfunc Ritorna il numero di file presenti nella directory <p dirtype>
//
// @rdesc Ritorna il numero di file presenti
int TDir::items (
    TDirtype dirtype) const  // @parm Directory della quale contare i file

{
  FileDes f;
  int _whichdir = (dirtype == _nordir ? NORDIR : COMDIR);

  CGetFile (1, &f, _nolock, _whichdir);
  return (int) f.EOD;
}

TTrec::TTrec ()
     : _des(NULL), _tab("")

{
  _rec = new RecDes;
  zero ();
  _num = -1;
}

TTrec::TTrec(const TTrec & r)
     : _des(NULL), _tab("")
{             
  _rec = new RecDes;
  *_rec = *r._rec;
  _num = r._num;
}

TTrec::~TTrec ()

{
  delete _rec;
}

int TTrec::compare(const TSortable & a) const
{
  const TTrec & r = (const TTrec &) a;
  int res = 0;
  
  if (_rec->NFields != r._rec->NFields || _rec->NKeys != r._rec->NKeys)  // Confronta prima il numero dei campi o il numero delle chiavi
    res = 1;
  else
  {
    const int nkeys = _rec->NKeys;
    for (int i=0; i<nkeys && res==0; i++) // scorre la lista delle chiavi (sono meno del numero di campi)
    {
      const KeyDes& k1 = _rec->Ky[i];
      const KeyDes& k2 = r._rec->Ky[i];
      if (k1.DupKeys != k2.DupKeys || k1.NkFields != k2.NkFields)
        res = 1;
      else
        for (int j=0; j<k1.NkFields && res==0; j++)
          if (k1.FieldSeq[j] != k2.FieldSeq[j] || k1.FromCh[j] != k2.FromCh[j]
              || (k1.FromCh[j] != INVFLD && k1.ToCh[j] != k2.ToCh[j]))
              res = 1;
    }
    
    if (res == 0) // se sono ancora uguali confronta tutti i campi
    {
      const int nflds = _rec->NFields;
      for (int n=0; n<nflds && res==0; n++)
      {
        const RecFieldDes& r1 = _rec->Fd[n];
        const RecFieldDes& r2 = r._rec->Fd[n];
        if (r1.TypeF != r2.TypeF || r1.Len != r2.Len || r1.Dec != r2.Dec)
          res = 1;
        else
          if (strcmp(r1.Name,r2.Name) != 0) 
            res = 1;
      }
    }
  }
  return res; 
}

void TTrec::rehash()
{
  int  pos, tmppos, nf, i;
  
  for (i = 0; i < MaxFields; i++) _rec->SortFd[i] = INVFLD; 
  if (_rec->NFields)
  {
    if (_rec->NFields> MaxFields)
      fatal_box("Troppi campi in questo tracciato") ;
    for (i = 0; i < _rec->NFields; i++) 
    { 
      nf = i; 
      pos = hashfun(_rec->Fd[nf].Name);
      while (TRUE)
      { 
        if (_rec->SortFd[pos] == INVFLD) 
        { 
          _rec->SortFd[pos] = (byte) nf; 
          break; 
        } 
        else 
        { 
          if (strcmp(_rec->Fd[_rec->SortFd[pos]].Name, _rec->Fd[nf].Name) <= 0) 
          { 
            pos++;
            if (pos >= MaxFields)
              pos = 0; 
          } 
          else 
          { 
            tmppos = _rec->SortFd[pos]; 
            _rec->SortFd[pos] = (byte) nf; 
            nf = tmppos; 
          } 
        } 
      } 
    }
    _rec->Fd[0].RecOff = 1; 
    for (i = 1; i < _rec->NFields; i++) 
      _rec->Fd[i].RecOff = _rec->Fd[i - 1].RecOff + _rec->Fd[i - 1].Len; 
  }
}

TTrec & TTrec::operator = (const TTrec & b)
{
  _num = b._num;
  memcpy (_rec, b._rec, sizeof (*_rec));
  return *this;
}

// @doc EXTERNAL

// @mfunc Assegna all'oggetto TTrec il tracciato record del file indicato
void TTrec::get (
  int nfile,        // @parm Numero del file da cui estrarre il tracciato record
  TDirtype dirtype) // @parm Direttorio nella quale e' contenuto il file (default _nordir)

{
  int _whichdir = (dirtype == _nordir ? NORDIR : COMDIR);

  CGetRec (nfile, _rec, _whichdir);
  _num = nfile;
}

// @doc EXTERNAL

// @mfunc Setta il file indicato con il tracciato record dell'oggetto                                
void TTrec::put (
  int nfile,        // @parm Numero del file di cui settare il tracciato record
  TDirtype dirtype) // @parm Direttorio nella quale e' contenuto il file (default _nordir)

{
  int _whichdir = (dirtype == _nordir ? NORDIR : COMDIR);

  if (nfile <= 0)
    fatal_box ("Bad file number %d", nfile);
  CPutRec (nfile, _rec, _whichdir);
}

void TTrec::zero ()

{
  _rec->NFields = 0; 
  for (int i = 0; i < MaxFields; i++) 
  { 
    strcpy(_rec->Fd[i].Name, ""); 
    _rec->Fd[i].TypeF = _nullfld;
    _rec->Fd[i].Len = 0; 
    _rec->Fd[i].Dec = 0; 
    _rec->Fd[i].RecOff = 0;
    _rec->SortFd[i] = INVFLD; 
  } 
  _rec->NKeys = 0; 
  for (i = 1; i < MaxKeys; i++) 
  { 
    _rec->Ky[i].DupKeys = FALSE; 
    _rec->Ky[i].NkFields = 0; 
    for (int j = 0; j < MKFields; j++)
    {
      _rec->Ky[i].FieldSeq[j] = INVFLD; 
      _rec->Ky[i].FromCh[j] = INVFLD; 
      _rec->Ky[i].ToCh[j] = INVFLD; 
    }
  } 
}

int TTrec::status (TDirtype dirop) const

{
  return rdir[dirop].IOR;
}

int TTrec ::field (const char *name) const

{
  return findfld (_rec, (char *) name);

}

const char *TTrec ::fielddef (int fld) const

{
  sprintf (_files_tmp_string, "%s|%d|%d|%d", _rec->Fd[fld].Name,
           (int) _rec->Fd[fld].TypeF, (int) _rec->Fd[fld].Len,
           (int) _rec->Fd[fld].Dec);
  return _files_tmp_string;
}

const char *TTrec ::keydef (int key) const

{
  TFixed_string s (_files_tmp_string, 128);

  s = "";
  for (int j = 0; j < _rec->Ky[key].NkFields; j++)
  {
    const bool upper = _rec->Ky[key].FieldSeq[j] > MaxFields;
    const int nfld = _rec->Ky[key].FieldSeq[j] - (upper ? MaxFields : 0);

    if (j)
      s << "+";
    if (upper)
      s << "UPPER(";
    s << _rec->Fd[nfld].Name;
    if (_rec->Ky[key].FromCh[j] < INVFLD)
      s << format ("[%d,%d]", _rec->Ky[key].FromCh[j] + 1,
                   _rec->Ky[key].ToCh[j] + 1);
    if (upper)
      s << ")";
  }
  s << (_rec->Ky[key].DupKeys ? "|X" : "| ");
  return (const char *) s;
}


#ifndef FOXPRO

bool TDir::is_active () const
{
  const int module = abs((int)flags());
  return main_app().has_module(module, CHK_DONGLE);
}

void TTrec::update_fielddef (int nfld, const char *desc)

{
  TToken_string s (desc);
  strcpy (_rec->Fd[nfld].Name, s.get ());
  _rec->Fd[nfld].TypeF = s.get_int ();
  _rec->Fd[nfld].Len = s.get_int ();
  _rec->Fd[nfld].Dec = s.get_int ();
}

void TTrec::update_keydef (int key, const char *desc)

{
  TExpression expr ("", _strexpr);
  TToken_string s (desc);
  TString ke (s.get ());

  if (expr.set ((const char *) ke, _strexpr))
  {                          
    const char * dup = s.get();
    _rec->Ky[key].DupKeys = (dup && *dup != ' ');
    TCodearray & c = expr.code ();
    c.begin ();
    int n = 0;
    while (!c.end ())
    {
      TCode & inst = c.step ();
      TCodesym sym = inst.getsym ();

      if (sym == _variable)
      {
        const char *s = inst.string ();

        for (int i = 0; i < _rec->NFields; i++)
          if (strcmp (_rec->Fd[i].Name, s) == 0)
            break;

        _rec->Ky[key].FieldSeq[n] = i;
        _rec->Ky[key].FromCh[n] = INVFLD;
        _rec->Ky[key].ToCh[n]   = INVFLD;
        inst = c.step ();
        sym = inst.getsym ();
        if (sym == _upper)
          _rec->Ky[key].FieldSeq[n] += MaxFields;
        else if (sym == _number)
        {
          _rec->Ky[key].FromCh[n] = (int)inst.number().integer() - 1;
          inst = c.step ();
          _rec->Ky[key].ToCh[n] = _rec->Ky[key].FromCh[n] + (int)inst.number ().integer () - 1;
          inst = c.step ();
        }
        else
          c.backtrace ();
        n++;
      }
    }
    _rec->Ky[key].NkFields = n;
  }
}

void TTrec::print_on (ostream & out) const

{
  const int n = num();
  out << n;
  if (_des && n>=LF_TABGEN && n<=LF_TAB && _tab.not_empty()) // Solo se e' una tabella...
    out << "|" << _tab;
  out << '\n';
  const int nfields = fields ();
  TToken_string s (80);

  out << nfields << '\n';
  for (int i = 0; i < nfields; i++)
  {
    s = fielddef (i);
    out << s ;
    if (_des)
      out << "|" << _des->get(_rec->Fd[i].Name);
    out << '\n';
  }
  const int nkeys = keys ();

  out << nkeys << '\n';
  for (i = 0; i < nkeys; i++)
  {
    s = keydef (i);
    out << s << '\n';
  }
}

void TTrec::read_from (istream & in)

{
  const int n = num();

  in.getline (_files_tmp_string, sizeof (_files_tmp_string), '\n');
  if (_des && n>=LF_TABGEN && n<=LF_TAB)
  {
    const TFixed_string t(_files_tmp_string);
    if (t.find('|') >= 0) 
    {
      const TString4 tabname(t.right(3));
      strcpy(_files_tmp_string,t.left(t.len()-4)); // Toglie il nome della tabella
      if (_tab != tabname && !yesno_box("Descrizione relativa alla tabella %s.\n Continuo ?",(const char*) tabname))
        return;
    }
  }
  const int ln = atoi (_files_tmp_string);
  if (n > 0 && ln != n && !yesno_box ("Descrizione relativa al file n.ro %d.\n Continuo ?", ln))
    return;

  in.getline (_files_tmp_string, sizeof (_files_tmp_string), '\n');
  const int nfields = atoi (_files_tmp_string);
  set_fields (nfields);
  TToken_string t;
  for (int i = 0; i < nfields; i++)
  {
    in.getline (_files_tmp_string, sizeof (_files_tmp_string), '\n');
    t = _files_tmp_string;
    const int itms = t.items();
    
    update_fielddef (i, _files_tmp_string);
    if (_des && itms == 5) // La descrizione viene caricata solo se esiste
      _des->set(_rec->Fd[i].Name, t.get(itms-1));
  }
  int nkeys;

  in.getline (_files_tmp_string, sizeof (_files_tmp_string), '\n');
  nkeys = atoi (_files_tmp_string);
  set_keys (nkeys);
  for (i = 0; i < nkeys; i++)
  {
    in.getline (_files_tmp_string, sizeof (_files_tmp_string), '\n');
    update_keydef (i, _files_tmp_string);
  }
  rehash ();
  _des = NULL;
  _tab = "";
}

#endif // FOXPRO