Object-Oriented Programming In C

/* --------------------- PHLIST2.H --------------------- */
#include "pinlist.h"

typedef struct phone_entry {
   char last_name[21], first_name[11], phone_no[14];

} PHONE_ENTRY;

#define PHONE_LIST_CLASS PINNACLE_LIST_CLASS \
            PHONE_ENTRY pe; \
            DBCOL last, first, phone, lastfirst;

typedef struct phone_list {
   PHONE_LIST_CLASS
} PHONE_LIST;

PHONE_LIST *new_phone_list();
void destroy_phone_list(PHONE_LIST *);
/* ---------------- PHLIST2.C ------------------------ */
#include "phlist2.h"
#include <string.h>
#include <conio.h>
#include <stdlib.h>

static void phone_list_memory_error(char *fun) {
fprintf{stderr,
"\nMemory Error in Function %s <Press a Key>\n", fun);
getch(); exit(1);
}

static unsigned find(PHONE_LIST *this, char *srch_l_name) {
DBSEARCH sobj; unsigned found;

sobj = DB_SearchObject(this->db, String, srch_l_name, "==");

found = DB_FindNext(this->last,sobj,DBNEXT);
DB_Free(sobj);
return(found);
}

static display(PHONE_LIST *this) {
   strcpy(this->pe.last_name,DB_GetString(this->last));
   strcpy(this->pe.first_name,DB_GetString(this->first));
   strcpy(this->pe.phone_no,DB_GetString(this->phone));
   printf("%-20s, %-10s - %-13s\n",this->pe.last_name,
   this->pe.first_name, this->pe.phone_no);
}

static void add_member(PHONE_LIST *this, PHONE_ENTRY *pe) {
   DB_AddRow)(this->table);
   DB_PutString(this->last,pe->last_name);
   DB_PutString(this->first,pe->first_name);
   DB_PutString(this->phone,pe->phone_no);
}

static void replace_member(PHONE_LIST *this,
PHONE_ENTRY *pe) {
   DB_PutString(this->last,pe->last_name);
   DB_PutString(this->first,pe->first_name);
   DB_PutString(this->phone,pe->phone_no);
}

static PHONE_ENTRY *current(PHONE_LIST *this) {
   strcpy(this->pe.last_name,DB_GetString(this->last));
   strcpy(this->pe.first_name,DB_GetString(this->first));
   strcpy(this->pe.phone_no,DB_GetString(this->phone));
   return(&(this->pe));
}

PHONE_LIST *new_phone_list() {
PINNACLE_LIST *pl; PHONE_LIST *this;

pl = new_pinnacle_list("fonelist.db","PhoneList");
if (pl == NULL)

   return(NULL);

this = calloc(1,sizeof(PHONE_LIST));
if (this == NULL) {
   destroy_pinnacle_list(pl);
   return(NULL);
}

memmove(this,pl,sizeof(PINNACLE_LIST));
free(pl);

this->last = DB_Column(this->table,"Last");
this->first = DB_Column(this->table,"First");
this->phone = DB_Column(this->table,"Phone");
this->lastfirst = DB_Column(this->table,"LastFirst");
DB_OrderBy(this->lastfirst);
this->find = find; this->display = display;
this->add_member = add_member;
this->replace_member = replace_member;
this->current = current;
return(this);
}

void destroy_phone_list(PHONE_LIST *this) {
   destroy_pinnacle_list(this);
}