campo-sirio/cb5/descend1.c

/***********************************************************************\
 *                                                                       *
 *   DESCEND1.C    Copyright (C) 1993 Sequiter Software Inc.             *
 *                                                                       *
 \***********************************************************************/
/* See User's Manual, page 100 */


#ifndef S4UNIX
#include "d4all.h"
#else
#include <conio.h>
#endif

#ifdef __TURBOC__
extern unsigned _stklen = 10000;
#endif

CODE4    code_base;
DATA4    *data_file = 0;
FIELD4   *f_name,*l_name,*address,*age,*birth_date
,*married,*amount,*comment;
TAG4    *name_tag,*address_tag,*age_tag,*date_tag;
TAG4INFO tag_info [] =
{
{"NAME","L_NAME+F_NAME",0,0,r4descending},
{"ADDRESS","ADDRESS",0,0,r4descending},
{"AGE_TAG","AGE",0,0,r4descending},
{"DATE_TAG","BIRTH_DATE",0,0,r4descending},
{0,0,0,0,0},
};

void  open_data_file()
{
  code_base.auto_open = 0;
  code_base.safety = 0;

  data_file = d4open(&code_base,"DATA1.DBF");
  i4create(data_file,NULL,tag_info);

  f_name = d4field(data_file,"F_NAME");
  l_name = d4field(data_file,"L_NAME");
  address = d4field(data_file,"ADDRESS");
  age = d4field(data_file,"AGE");
  birth_date = d4field(data_file,"BIRTH_DATE");
  married = d4field(data_file,"MARRIED");
  amount = d4field(data_file,"AMOUNT");
  comment = d4field(data_file,"COMMENT");

  name_tag = d4tag(data_file,"NAME");
  address_tag = d4tag(data_file,"ADDRESS");
  age_tag = d4tag(data_file,"AGE_TAG");
  date_tag = d4tag(data_file,"DATE_TAG");
}

void print_records()
{
  int      rc,j,age_value;
  double   amount_value;
  char     f_name_str[15],l_name_str[15];
  char     address_str[20];
  char     date_str[9];
  char     married_str[2];
  char     *comment_str;

  for(rc = d4top(data_file);rc == r4success
      ;rc = d4skip(data_file, 1L))
  {
    f4ncpy(f_name,f_name_str,sizeof(f_name_str));
    f4ncpy(l_name,l_name_str,sizeof(l_name_str));
    f4ncpy(address,address_str
           ,sizeof(address_str));
    age_value = f4int(age);
    amount_value = f4double(amount);
    f4ncpy(birth_date,date_str,sizeof(date_str));
    f4ncpy(married,married_str
           ,sizeof(married_str));
    comment_str = f4memo_str(comment);
    printf("-------------------------------\n");
    printf("Name     : %10s %10s\n"
           ,f_name_str,l_name_str);
    printf("Address  : %15s\n",address_str);
    printf("Age : %3d   Married : %1s\n"
           ,age_value,married_str);
    printf("Comment: %s\n",comment_str);
    printf("Amount purchased : $%5.2lf \n"
           ,amount_value);
    printf("\n");
  }
}

void print_record()
{
  int      age_value;
  double   amount_value;
  char     f_name_str[15],l_name_str[15];
  char     address_str[20];
  char     date_str[9];
  char     married_str[2];
  char     *comment_str;
  char     status[15];

  f4ncpy(f_name,f_name_str,sizeof(f_name_str));
  f4ncpy(l_name,l_name_str,sizeof(l_name_str));
  f4ncpy(address,address_str,sizeof(address_str));
  age_value = f4int(age);
  amount_value = f4double(amount);
  f4ncpy(birth_date,date_str,sizeof(date_str));
  f4ncpy(married,married_str,sizeof(married_str));
  comment_str = f4memo_str(comment);
  printf("-------------------------------\n");
  printf("Name     : %10s %10s\n"
         ,f_name_str,l_name_str);
  printf("Address  : %15s\n",address_str);
  printf("Age: %3d BirthDate:%8s Married: %1s\n"
         , age_value,date_str,married_str);
  printf("Comment: %s\n",comment_str);
  printf("Amount purchased : $%5.2lf \n"
         ,amount_value);

  printf("\n");
}

int main()
{
  d4init(&code_base);
  code_base.open_error = 0;
  code_base.safety = 0;

  open_data_file();

  printf("Display records in descendingL_NAME + F_NAME order (Press ENTER)\n");
#ifdef S4UNIX
  getchar() ;
#else
  getch();
#endif
  d4tag_select(data_file,name_tag);
  print_records();

  printf("Display records in descending ADDRESS order (Press ENTER)\n");
#ifdef S4UNIX
  getchar() ;
#else
  getch();
#endif
  d4tag_select(data_file,address_tag);
  print_records();

  printf("Display records in descending AGE order (Press ENTER)\n");
#ifdef S4UNIX
  getchar() ;
#else
  getch();
#endif
  d4tag_select(data_file,age_tag);
  print_records();

  printf("Display records in descending BIRTH_DATE order (Press ENTER)\n");
#ifdef S4UNIX
  getchar() ;
#else
  getch();
#endif
  d4tag_select(data_file,date_tag);
  print_records();

  printf("Seek on L_NAME + F_NAME tag (Press ENTER)\n");
#ifdef S4UNIX
  getchar() ;
#else
  getch();
#endif
  d4tag_select(data_file,name_tag);
  d4seek(data_file,"Krammer   David      ");
  print_record();

  printf("Seek on ADDRESS tag (Press ENTER)\n");
#ifdef S4UNIX
  getchar() ;
#else
  getch();
#endif
  d4tag_select(data_file,address_tag);
  d4seek(data_file,"123 - 45 Ave   ");
  print_record();

  printf("Seek on AGE tag (Press ENTER)\n");
#ifdef S4UNIX
  getchar() ;
#else
  getch();
#endif
  d4tag_select(data_file,age_tag);
  d4seek(data_file,"23");
  print_record();

  printf("Seek on DATE tag (Press ENTER)\n");
#ifdef S4UNIX
  getchar() ;
#else
  getch();
#endif
  d4tag_select(data_file,date_tag);
  d4seek(data_file,"19500101");
  print_record();

  d4close_all(&code_base);
  d4init_undo(&code_base);
  mem4reset() ;
  return 0;
}