File: dbfxtrct.cpp

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/* 
    Xbase64 project source code

    This program extracts data from a dbf data file and puts it in
    a comma delimited output file,  suitable for input into an awk or
    perl script

    This program excludes all memo fields

    Copyright (C) 1997,2003  Gary A. Kunkel   

    This program is free software; you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
    the Free Software Foundation; either version 2 of the License, 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 more details.

    You should have received a copy of the GNU General Public License
    along with this program; if not, write to the Free Software
    Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA

    Contact:
    
     Email:
    
      xbase64-devel@lists.sourceforge.net
      xbase64-users@lists.sourceforge.net
      
      
     Regular Mail:
     
       XBase Support
       149C South Main St
       Keller Texas, 76248     
       USA

*/

#include <xbase64/xbase64.h>

/*************************************************************************/
void Usage();
void Usage()
{
  std::cout << "\nUsage: dbfxtrct -iDATABASE.DBF -sINDEX.N[TD]X -f -F -dMM/DD/YY\n";
  std::cout << "\nWhere DATABASE.DBF is the name of the database file to dump\n";
  std::cout << "INDEX.NTX or .NDX is an optional index sort parameter\n";
  std::cout << "-f  optional field name list in first record\n";
  std::cout << "-F  optional field name and attributes in first record\n";
  std::cout << "MM/DD/YY is an optional output date format for any date fields\n";
  std::cout << "\nThis program creates output suitable for awk and perl scripts\n";
  std::cout << "\nThis program does not support memo fields (yet).\n";
}
/*************************************************************************/
int main(int ac,char** av)
{
   xbXBase x;
   xbDbf d( &x );
   xbShort rc, FieldOption = 0;
   xbIndex *ix = 0;
   xbNdx z(&d);

   char *dbfname = NULL;
   char *ixname  = NULL;
   char *p;
   char buf[200];
   xbExpn exp( &x );

/*  Get the input parameters  

    -i  input datafile name
    -s  optional sort index name
    -f  optional field names in record one
    -F  optional field names and attributes in record one
    -d  date format  
*/
  for( int i = 1; i < ac; i++ )
  {
    p = av[i];
    if( *p != '-' ){
      std::cout << "Invalid parameter " << *p << std::endl;
      Usage();
      return 1;
    }
    p++;
    if( *p == 'i' )
     dbfname = ++p;
    else if( *p == 's' )
     ixname = ++p;
    else if( *p == 'f' )
      FieldOption = 1;
    else if( *p == 'F' )
      FieldOption = 2;
    else if( *p == 'd' )
      x.SetDefaultDateFormat( ++p );
    else{
      std::cout << "Invalid parameter " << *p << std::endl;
      Usage();
      return 1;
    }
  }

/* if missing params, display a usage message and exit */
  
  if( !dbfname ){
     Usage();
     return 1;
   }

/*  open the database file */

   if(( rc = d.OpenDatabase( dbfname )) != XB_NO_ERROR )
   {
      std::cout << "\nCould not open file " << dbfname << " rc = " << rc
                << "\n";
      return 2;
   }

/*  if an index was specified, open the index file */

   if( ixname ){

#ifdef XB_INDEX_NTX
     if( strstr( ixname, "NTX" ))
       ix = new xbNtx( &d );
#endif

#ifdef XB_INDEX_NDX
     if( strstr( ixname, "NDX" ))
       ix = new xbNdx( &d );
#endif
     if( !ix ){
       std::cout << "Unknown index type. .NTX and .NDX index file support only\n";
       return 3;
     }
     if(( rc = ix->OpenIndex( ixname )) != XB_NO_ERROR )
     {
       std::cout << "\nCould not open index " << ixname << " rc = " << rc
                 << "\n";
       return 4;
     }
   }


/*  if -f or -F parameter, dump the header information */
  if( FieldOption ){
    for( xbLong l = 0; l < d.FieldCount(); l++ ){
      if( l ) std::cout << ",";
      std::cout << d.GetFieldName(l);
      if( FieldOption == 2 ){
        std::cout << "|" << d.GetFieldType(l) << "|" << d.GetFieldLen(l);
	std::cout << "|" << d.GetFieldDecimal(l);
      }
    }
    std::cout << std::endl;
  }

/*  if an index used, then loop thru each record, based on index, else
    dump in dbf sort order */
  if( ixname )
    rc = ix->GetFirstKey();
  else
    rc = d.GetFirstRecord();
    
  while( rc == XB_NO_ERROR ){
    for( xbLong l = 0; l < d.FieldCount(); l++ ){
      if( l ) std::cout << ",";
      strcpy( buf, exp.LTRIM( d.GetStringField( l )));
      if( d.GetFieldType( l ) == 'D' )
        std::cout << exp.DTOC( buf );
      else
        std::cout << exp.TRIM( buf );
    }
    if( ixname )
      rc = ix->GetNextKey();
    else
      rc = d.GetNextRecord();
    std::cout << std::endl;
  }

/*  close everything */
   d.CloseDatabase();
   return 0;
}