/*
 * testlibpq.c
 *
 * Test the C version of libpq, the PostgreSQL frontend
 * library.
 */
#include <stdio.h>
#include "/usr/include/pgsql/libpq-fe.h"
void
exit_nicely(PGconn *conn)
{
    PQfinish(conn);
    exit(1);
}
main()
{
    char       a[100];
    char       *pghost,
               *pgport,
	       *pguser,
	       *pgpw,
               *pgoptions,
               *pgtty;
    char       *dbName;
    int         nFields;
    int         i,
                j;
    /* FILE *debug; */
    PGconn     *conn;
    PGresult   *res;
    /*
     * begin, by setting the parameters for a backend connection if the
     * parameters are null, then the system will try to use reasonable
     * defaults by looking up environment variables or, failing that,
     * using hardwired constants
     */
    printf("Podaj nazwe hosta ");
    scanf("%s",a);
    
    pghost = a;              /* host name of the backend server */
    pgport = "5432";              /* port of the backend server */
    pgoptions = NULL;           /* special options to start up the backend
                                 * server */
    pguser="cez";
    pgpw =" ";
    pgtty = NULL;               /* debugging tty for the backend server */
    dbName = "ala";
    /* make a connection to the database */
    conn = PQsetdbLogin(pghost, pgport, pgoptions, pgtty, dbName,pguser,pgpw);
    /*
     * check to see that the backend connection was successfully made
     */
    if (PQstatus(conn) == CONNECTION_BAD)
    {
        fprintf(stderr, "Connection to database '%s' failed.\n", dbName);
        fprintf(stderr, "%s", PQerrorMessage(conn));
        exit_nicely(conn);
    }
    else 
     { 
      printf("Polaczenie z baza ok\n");
     }	
    /* debug = fopen("/tmp/trace.out","w"); */
    /* PQtrace(conn, debug);  */
    /* start a transaction block */
    /*
     * fetch rows from the pg_database, the system catalog of
     * databases
     */
    res = PQexec(conn, "select * from ala1;");
    if (!res || PQresultStatus(res) != PGRES_TUPLES_OK)
    {
        fprintf(stderr, "Nie udalo sie\n");
        PQclear(res);
        exit_nicely(conn);
    }
    /* first, print out the attribute names */
    nFields = PQnfields(res);
    for (i = 0; i < nFields; i++)
        printf("%-15s", PQfname(res, i));
    printf("\n\n");
    /* next, print out the rows */
    for (i = 0; i < PQntuples(res); i++)
    {
        for (j = 0; j < nFields; j++)
            printf("%-15s", PQgetvalue(res, i, j));
        printf("\n");
    }
    /* close the connection to the database and cleanup */
    PQfinish(conn);
    /* fclose(debug); */
    return 0;
}