/*
    test case
*/
#include <windows.h>

#include <sql.h>
#include <sqlext.h>
#include <stdio.h>
#include <string.h>
#include <stdlib.h>


void CheckRC(SQLRETURN rc, char* msg, char* filename, int lineno);
#define CHECKRC(FUNCSHN,MSG) CheckRC(FUNCSHN, MSG, __FILE__, __LINE__)

SQLHENV     hEnv = SQL_NULL_HENV;
SQLHDBC     hDbc = SQL_NULL_HDBC;
SQLHSTMT    hStmt = SQL_NULL_HSTMT;
SQLCHAR*    connString;
SQLCHAR     connOut[255]; /* buffer for connection output */
SQLSMALLINT szConnOut; /* num bytes returned in connOut */
SQLINTEGER Version = SQL_OV_ODBC3;

void doTest()
{
    char filename[64];
    char filedata[65535];
    SQLINTEGER len1;
    SQLINTEGER len2;
    SQLRETURN   retcode;
    FILE *fd;
    int readbytes;
    SQLUSMALLINT RowStatusArray;
    SQLRETURN rc;

    printf("Test....\n");


    CHECKRC( SQLAllocStmt(hDbc, &hStmt), "SQLAllocStmt()" );
    CHECKRC( SQLExecDirect(hStmt, (SQLCHAR*)"USE TEST", SQL_NTS), "SQLExecDirect()" );

    SQLSetStmtAttr(hStmt, SQL_ATTR_CURSOR_TYPE, SQL_CURSOR_KEYSET_DRIVEN, 0);
    SQLSetStmtAttr(hStmt, SQL_ATTR_ROW_BIND_TYPE, SQL_BIND_BY_COLUMN, 0);
    SQLSetStmtAttr(hStmt, SQL_ATTR_ROW_ARRAY_SIZE, 1, 0);
    SQLSetStmtAttr(hStmt, SQL_ATTR_ROW_STATUS_PTR, RowStatusArray, 0);

    CHECKRC( SQLAllocStmt(hDbc, &hStmt), "SQLAllocStmt()" );
    retcode = SQLExecDirect(hStmt, "SELECT filename, filedata FROM file_table;", SQL_NTS); //WHERE filename = ''
    if (retcode == SQL_SUCCESS || retcode == SQL_SUCCESS_WITH_INFO) 
    {
       /* Bind columns 1 and 2 */
       CHECKRC( SQLBindCol(hStmt, 1, SQL_C_CHAR, &filename, 64, &len1), "SQLBindCol(1)" );
       CHECKRC( SQLBindCol(hStmt, 2, SQL_C_CHAR, &filedata, 65535, &len2), "SQLBindCol(2)");
       
       CHECKRC( rc = SQLFetchScroll(hStmt, SQL_FETCH_NEXT, 0), "SQLFetchScroll()");

       printf("Old row values %s and %s....\n",filename, filedata);

       strcpy(filename,"testfile.dat");
       printf("Open new.rtf....\n");
       fd = fopen(".\\new.rtf", "r");
       if (fd != 0)
       {
         printf("Load new.rtf....\n");
         readbytes = fread(&filedata,sizeof(char),(size_t)65535,fd);
         printf("Loaded %i bytes....\n",readbytes);
         printf("Close new.rtf....\n");
         fclose(fd);
       } 
     
       printf("sql update....\n");
       CHECKRC( SQLSetPos(hStmt, 0, SQL_UPDATE, SQL_LOCK_NO_CHANGE), "SQLSetPos()" );

      
    }
    

    CHECKRC( SQLFreeStmt(hStmt, SQL_DROP), "SQLFreeStmt()" );
}

int main(int argc, char** argv)
{
    int nPrompt = SQL_DRIVER_NOPROMPT;

    if (argc < 2 || strlen(argv[1]) == 0)
    {
        connString = (SQLCHAR *)"DRIVER=MySQL ODBC 3.51 Driver;";
    }
    else
        connString = (SQLCHAR *)argv[1];

    if (SQLAllocEnv(&hEnv) != SQL_SUCCESS)
    {
        fprintf(stderr, "Unable to allocate SQLHENV\n");
        return(1);
    }

    printf("Connect....\n");
    SQLAllocEnv(&hEnv);
    CHECKRC( SQLSetEnvAttr(hEnv,SQL_ATTR_ODBC_VERSION,Version,0 ), "SQLSetEnvAttr()" );
    CHECKRC( SQLAllocConnect(hEnv, &hDbc), "SQLAllocConnect()" );
    CHECKRC( SQLDriverConnect(hDbc, (HWND)0, connString, SQL_NTS, connOut, 255, &szConnOut, nPrompt), "SQLDriverConnect()" );

    doTest();

    printf("Disconnect....\n");
    CHECKRC( SQLDisconnect(hDbc), "SQLDisconnect()" );
    CHECKRC( SQLFreeConnect(hDbc), "SQLFreeConnect()" );
    CHECKRC( SQLFreeEnv(hEnv), "SQLFreeEnv()" );

    return 0;
}

void CheckRC(SQLRETURN rc, char* msg, char* filename, int lineno)
{
#define MSG_LNG 512

    SQLCHAR     szSqlState[MSG_LNG];
    SQLINTEGER  pfNativeError;
    SQLCHAR     szErrorMsg[MSG_LNG];
    SQLSMALLINT pcbErrorMsg;
    SQLRETURN   ret = SQL_SUCCESS;

    int error = 0;

    if (rc != SQL_SUCCESS && rc != SQL_NO_DATA_FOUND)
    {
        if (rc != SQL_SUCCESS_WITH_INFO)
        {
            fprintf(stderr, "\nERROR (%s:%d): %s\n",
                    filename, lineno, msg);
            error = 1;
        }

        while (ret == SQL_SUCCESS || ret == SQL_SUCCESS_WITH_INFO)
        {
            ret = SQLError(hEnv, hDbc, hStmt,
                           szSqlState, &pfNativeError,
                           szErrorMsg, MSG_LNG,
                           &pcbErrorMsg);
            switch (ret)
            {
                case SQL_SUCCESS:  
                    if (rc == SQL_SUCCESS_WITH_INFO)
                    {
                        fprintf(stderr, "\nINFO: (%s:%d): %s\n",
                                filename, lineno, msg);
                    }
                    fprintf(stderr, 
                            "*** %s\n*** ODBC Code: %s, "
                            "Driver Code: %ld\n\n",
                            szErrorMsg, szSqlState, pfNativeError);
                    break;
                case SQL_NO_DATA_FOUND:
                    break;
                default:
                    fprintf(stderr,
                            "*** SQLError() failed with code=%d\n\n", ret);
                    break;
            }
        }
    }
    if (error) exit(1);
}