String Lengths

[Chris Hall]

I have written some code to load some data into the handheld for testing
purposes.  I am trying to mimic a situation where I will be reading in a
fixed record and writing the data as strings  into individual database
fields.  When I watch this process thru the emulator, I am confused at the
string lengths it is telling me that I have for each field.

For example, the CustNo should be a string with length of 5..... the
emulator says it has length 73.  What have I missed here?  And is there a
better way to do this?

Thanks so much
   Chris



//----------------------------------------------------------
// Customer Database Structure
//----------------------------------------------------------
typedef struct customerDB {
  Char CustNo [5];
  Char CustLoc[5];
  Char CustName[30];
  Char Addr[30];
  Char AuthF[1];
  Char PriceNo[2];
  float DiscPcnt; //4.2
  Char Route[3];
  Char CallDay[7];
  Char DelvDay[7];

} customerDB;

Boolean UpdateCustomerDB(Char rec[])
{
    extern DmOpenRef gcustomerDB;

    Err error;
    UInt16 index = 0;
    MemHandle h;
    customerDB r;  // this is the database record
    Char *strPcnt;
    Int32 iPcnt;
   UInt16 len;

    // fill the record with data
 if (rec[0] == 'A')
 {
    rec += 1;
    StrNCopy(r.CustNo,rec,5);
             r.CustNo[5]    = chrNull;
    rec += 5;
    StrNCopy(r.CustLoc,rec,5);
             r.CustLoc[5]   = chrNull;
    rec += 5;
    StrNCopy(r.CustName,rec,30);
             r.CustName[30] = chrNull;
    rec += 30;
    StrNCopy(r.Addr,rec,30);
             r.Addr[30] = chrNull;
    rec += 30;
    StrNCopy(r.AuthF,rec,1);
             r.AuthF[1]     = chrNull;
    rec += 1;
    StrNCopy(r.PriceNo,rec,2);
       r.PriceNo[2]   = chrNull;
    rec += 2;
     StrNCopy(strPcnt,rec,4);
    strPcnt[4]   = chrNull;
    iPcnt = StrAToI(strPcnt);
    r.DiscPcnt = iPcnt * .01;
    *r.Route = chrNull;
    *r.CallDay = chrNull;
    *r.DelvDay = chrNull;

 }

    h = DmNewRecord(gcustomerDB, &index, sizeof(r));
    if (h)
    { // could fail due to insufficient memory!
  MemPtr p = MemHandleLock(h);
        error = DmWrite(p, 0, &r, sizeof(r));
        MemPtrUnlock(p);
        DmReleaseRecord(gcustomerDB, index, true);
    }
 else
     error = DmGetLastErr();

 len = StrLen(r.CustNo) ;                // ----------------->>>>>    Len =
73 in emulator
 len = StrLen(r.CustLoc) ;               // ----------------->>>>>    Len =
68 in emulator
 len = StrLen(r.CustName) ;           // ----------------->>>>>     Len = 63
in emulator
 len = StrLen(r.Addr) ;                   // ----------------->>>>>     Len
= 33 in emulator
 len = StrLen(r.AuthF) ;                  // ----------------->>>>>     Len
=  3 in emulator
 len = StrLen(r.PriceNo) ;              // ----------------->>>>>      Len =
2 in emulator
 len = StrLen(r.Route);                   // ----------------->>>>>      Len
=  0 in emulator
 len = StrLen(r.CallDay);                // ----------------->>>>>      Len
=  0 in emulator
 len = StrLen(r.DelvDay);               // ----------------->>>>>      Len =
0 in emulator
 return error;
}
void LoadCustomerFile()
{
 int i;
 extern DmOpenRef gcustomerDB;
 Char rec[5][78] =
 {
  {"A358034932 RITE AID #4932  E.LEHIGH AVE. 260 WEST LEHIGH AVENUE
Y030250"},
     {"A358032564 RITE AID #2564 WYOMING AV     113-131 WEST WYOMING AVENUE
Y030300"},
     {"A360031282 CVS # 1282 GREENFIELD AVENUE  44 GREENFIELD AVENUE
Y080000"},
     {"A358031758 RITE AID #1758 CLIFTON HGTS   113 E BALTIMORE AVENUE
Y030000"},
     {"D358030174 RITE AID #0174  16TH&CHESTNUT 1628-36 CHESTNUT STREET
Y030000"}
 };

 for (i = 0; i < 5; i++) {
  UpdateCustomerDB(rec[i]);
 }




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