campo-sirio/cb5/d4create.c

/* d4create.c   (c)Copyright Sequiter Software Inc., 1990-1994.  All rights reserved. */

#include "d4all.h"
#ifndef S4UNIX
#ifdef __TURBOC__
#pragma hdrstop
#endif  /* __TUROBC__ */
#endif  /* S4UNIX */

#ifndef S4OFF_WRITE

DATA4 *S4FUNCTION d4create( CODE4 *c4, char *name, FIELD4INFO *field_data, TAG4INFO *tag_info )
{
  unsigned n_flds ;
  int      is_memo, i ;
  long     calc_record_len, lheader_len ;
  char     buf[258], buffer[0x800] ;
  FILE4SEQ_WRITE seq_write ;
  DATA4  *d4 ;
  DATA4HEADER_FULL create_header ;
  FIELD4IMAGE   create_field_image ;
  FILE4   file ;
  MEMO4FILE m4file ;
#ifdef S4DEBUG
  int  len, dec ;
#endif  /* S4DEBUG */

#ifdef S4VBASIC
  if ( c4parm_check( c4, 1, E4_D4CREATE ) )
    return 0 ;
#endif  /* S4VBASIC */

  if ( c4 == 0 || name == 0 || field_data == 0 )
#ifdef S4DEBUG
    e4severe( e4parm, E4_D4CREATE ) ;
#else
  return 0 ;
#endif

#ifdef S4DEBUG
  u4name_piece( buf, sizeof( buf ), name, 0, 0 ) ;
  if ( d4data( c4, buf ) )
  {
    e4( c4, e4info, E4_INFO_DAO ) ;
    return 0 ;
  }
#endif

  if ( c4->error_code < 0 )
    return 0 ;

  is_memo = 0 ;
  calc_record_len = 1L ;
  n_flds = 0 ;

  for ( ; field_data[n_flds].name ; n_flds++ )
  {
#ifdef S4DEBUG
    if ( (field_data[n_flds].type > '\116') || (field_data[n_flds].type < '\103') )
      e4( c4, e4field_type, field_data[n_flds].name ) ;
#endif  /* S4DEBUG */
    if ( field_data[n_flds].type == 'M' || field_data[n_flds].type == 'G' || field_data[n_flds].type == 'B' )
      is_memo = 1 ;
    switch( field_data[n_flds].type )
    {
    case 'N':
    case 'F':
    case 'C':
      calc_record_len += field_data[n_flds].len ;
      break ;
    case 'M':
    case 'G':
    case 'B':
#ifdef S4MEMO_OFF
#ifdef S4DEBUG
      e4severe( e4not_memo, E4_D4CREATE ) ;
#endif
#else
      calc_record_len += 10 ;
      break ;
#endif
    case 'D':
      calc_record_len += 8 ;
      break ;
    case 'L':
      calc_record_len += 1 ;
      break ;
    default:
#ifdef S4DEBUG
      e4severe( e4data, E4_DATA_ILL ) ;
#endif
      break ;
    }
  }

  if ( calc_record_len >= USHRT_MAX ) /* Increment for deletion flag. */
  {
    e4( c4, e4record_len, name ) ;
    return 0 ;
  }

  lheader_len = (long)n_flds * 32 + 34 ;
  if ( lheader_len >= USHRT_MAX )
  {
    e4describe( c4, e4create, E4_CREATE_TOO, name, 0 ) ;
    return 0 ;
  }

  u4ncpy( buf, name, sizeof(buf) ) ;
#ifdef S4UNIX
  u4name_ext( buf, sizeof(buf), "dbf", 0 ) ;
#else
  u4name_ext( buf, sizeof(buf), "DBF", 0 ) ;
#endif

  if ( file4create( &file, c4, buf, 1 ) )
    return 0 ;

  file4seq_write_init( &seq_write, &file, 0L, buffer, sizeof(buffer) ) ;

  /* Write the header */
  memset( (void *)&create_header, 0, sizeof(create_header) ) ;
  if ( is_memo )
#ifdef S4MFOX
    create_header.version = (char) 0xF5 ;
#endif  /* S4MFOX */
#ifdef S4MNDX
  create_header.version = (char) 0x83 ;
#endif  /* S4MNDX */
#ifdef S4MMDX
  create_header.version = (char) 0x8B ;
#endif  /* S4MMDX */
  else
    create_header.version = (char) 0x03 ;

  u4yymmdd( &create_header.yy ) ;
  create_header.header_len = (unsigned short) (32*(n_flds+1) + 1) ;
  create_header.record_len = (unsigned short) calc_record_len ;

#ifdef S4BYTE_SWAP
  create_header.num_recs = x4reverse_long( (void *)&create_header.num_recs ) ;
  create_header.header_len = x4reverse_short( (void *)&create_header.header_len ) ;
  create_header.record_len = x4reverse_short( (void *)&create_header.record_len ) ;
#endif  /* S4BYTE_SWAP */

  file4seq_write( &seq_write, (char *) &create_header, sizeof(create_header) ) ;

  for ( i = 0; i < (int) n_flds; i++ )
  {
    memset( (void *)&create_field_image, 0, sizeof(create_field_image) ) ;
    u4ncpy( create_field_image.name, field_data[i].name, sizeof(create_field_image.name));
    c4trim_n( create_field_image.name, sizeof(create_field_image.name) ) ;
    c4upper( create_field_image.name ) ;

    create_field_image.type = (char) field_data[i].type ;
    c4upper( &create_field_image.type ) ;

    switch( create_field_image.type )
    {
    case 'C':
      create_field_image.len = (unsigned char)(field_data[i].len & 0xFF) ;
      create_field_image.dec = (unsigned char)(field_data[i].len>>8) ;
      break ;
#ifndef S4MEMO_OFF
    case 'M':
    case 'G':
    case 'B':
      create_field_image.len = 10 ;
      create_field_image.dec = 0 ;
      break ;
#endif
    case 'D':
      create_field_image.len = 8 ;
      create_field_image.dec = 0 ;
      break ;
    case 'L':
      create_field_image.len = 1 ;
      create_field_image.dec = 0 ;
      break ;
    case 'N':
    case 'F':
      create_field_image.len = (unsigned char) field_data[i].len ;
      create_field_image.dec = (unsigned char) field_data[i].dec ;
#ifdef S4DEBUG
      len = field_data[i].len ;
      dec = field_data[i].dec ;
      if ( ( len > F4MAX_NUMERIC || len < 1 || len <= 2 && dec != 0 || dec < 0 ) ||
          ( dec > len - F4DECIMAL_OFFSET  && dec > 0 ) || ( dec > F4MAX_DECIMAL ) )
        e4severe( e4data, E4_DATA_ILL ) ;
#endif
      break ;
    default:
#ifdef S4DEBUG
      e4severe( e4data, E4_DATA_ILL ) ;
#endif
      break ;
    }

    if ( file4seq_write( &seq_write, &create_field_image, sizeof(create_field_image)) < 0 )  break ;
  }

  file4seq_write( &seq_write, "\015\032", 2 ) ;
  file4seq_write_flush( &seq_write ) ;

  file4close( &file ) ;

#ifndef S4MEMO_OFF
  if ( create_header.version & 0x80 )
  {
#ifdef S4MFOX
#ifdef S4UNIX
    u4name_ext( buf, sizeof(buf), "fpt", 1 ) ;
#else
    u4name_ext( buf, sizeof(buf), "FPT", 1 ) ;
#endif
#else
#ifdef S4UNIX
    u4name_ext( buf, sizeof(buf), "dbt", 1 ) ;
#else
    u4name_ext( buf, sizeof(buf), "DBT", 1 ) ;
#endif
#endif  /* S4MFOX */
    memo4file_create( &m4file, c4, 0, buf) ;
    file4close( &m4file.file ) ;
  }
#endif

#ifdef N4OTHER
  i = c4->auto_open ;
  c4->auto_open = 0 ;   /* don't open the index files */
#endif  /* N4OTHER */
  d4 = d4open( c4, name ) ;
  if ( d4 == 0 )
    return 0 ;
#ifdef N4OTHER
  c4->auto_open = i ;   /* reset the auto_open flag */
#endif  /* N4OTHER */

#ifdef S4INDEX_OFF
#ifdef S4DEBUG
  if ( tag_info )
    e4severe( e4not_index, E4_D4CREATE ) ;
#endif
#else
  if ( tag_info )
  {
#ifdef N4OTHER
    if ( i4create( d4, d4->file.name, tag_info ) == 0 )
#else
      if ( i4create( d4, 0, tag_info ) == 0 )
#endif
      {
        d4close( d4 ) ;
        return 0 ;
      }

#ifdef S4DEBUG
    if ( c4->index_memory == 0 )
      e4severe( e4data, E4_D4CREATE ) ;
#endif  /* S4DEBUG */
  }
#endif
  return d4 ;
}
#endif  /* S4OFF_WRITE */


#ifdef S4VB_DOS

DATA4 *d4create_v ( CODE4 *c4 , char *name, FIELD4INFO *f4, TAG4INFO *t4 )
{
  return d4create( c4, c4str(name), f4, t4 ) ;
}

DATA4 *d4createData ( CODE4 *c4, char *name, FIELD4INFO *f4 )
{
  return d4create( c4, c4str(name), f4, 0 ) ;
}

#endif