DBFWriteAttribute()

static int DBFWriteAttribute ( DBFHandle  psDBF, int  hEntity, int  iField, void *  pValue  )

static

Definition at line 1325 of file dbfopen.c.

{
    int         i, j, nRetResult = TRUE;
    unsigned char       *pabyRec;
    char        szSField[XBASE_FLD_MAX_WIDTH+1], szFormat[20];
 
/* -------------------------------------------------------------------- */
/*      Is this a valid record?                                         */
/* -------------------------------------------------------------------- */
    if( hEntity < 0 || hEntity > psDBF->nRecords )
        return( FALSE );
 
    if( psDBF->bNoHeader )
        DBFWriteHeader(psDBF);
 
/* -------------------------------------------------------------------- */
/*      Is this a brand new record?                                     */
/* -------------------------------------------------------------------- */
    if( hEntity == psDBF->nRecords )
    {
        if( !DBFFlushRecord( psDBF ) )
            return FALSE;
 
        psDBF->nRecords++;
        for( i = 0; i < psDBF->nRecordLength; i++ )
            psDBF->pszCurrentRecord[i] = ' ';
 
        psDBF->nCurrentRecord = hEntity;
    }
 
/* -------------------------------------------------------------------- */
/*      Is this an existing record, but different than the last one     */
/*      we accessed?                                                    */
/* -------------------------------------------------------------------- */
    if( !DBFLoadRecord( psDBF, hEntity ) )
        return FALSE;
 
    pabyRec = REINTERPRET_CAST(unsigned char *,psDBF->pszCurrentRecord);
 
    psDBF->bCurrentRecordModified = TRUE;
    psDBF->bUpdated = TRUE;
 
/* -------------------------------------------------------------------- */
/*      Translate NULL value to valid DBF file representation.          */
/*                                                                      */
/*      Contributed by Jim Matthews.                                    */
/* -------------------------------------------------------------------- */
    if( pValue == SHPLIB_NULLPTR )
    {
        memset( pabyRec+psDBF->panFieldOffset[iField],
                DBFGetNullCharacter(psDBF->pachFieldType[iField]),
                psDBF->panFieldSize[iField] );
        return TRUE;
    }
 
/* -------------------------------------------------------------------- */
/*      Assign all the record fields.                                   */
/* -------------------------------------------------------------------- */
    switch( psDBF->pachFieldType[iField] )
    {
      case 'D':
      case 'N':
      case 'F':
      {
        int             nWidth = psDBF->panFieldSize[iField];
 
        if( STATIC_CAST(int,sizeof(szSField))-2 < nWidth )
            nWidth = sizeof(szSField)-2;
 
        snprintf( szFormat, sizeof(szFormat), "%%%d.%df",
                    nWidth, psDBF->panFieldDecimals[iField] );
        CPLsnprintf(szSField, sizeof(szSField), szFormat, *STATIC_CAST(double *, pValue) );
        szSField[sizeof(szSField)-1] = '\0';
        if( STATIC_CAST(int,strlen(szSField)) > psDBF->panFieldSize[iField] )
        {
            szSField[psDBF->panFieldSize[iField]] = '\0';
            nRetResult = FALSE;
        }
        memcpy(REINTERPRET_CAST(char *, pabyRec+psDBF->panFieldOffset[iField]),
            szSField, strlen(szSField) );
        break;
      }
 
      case 'L':
        if (psDBF->panFieldSize[iField] >= 1  &&
            (*STATIC_CAST(char*,pValue) == 'F' || *STATIC_CAST(char*,pValue) == 'T'))
            *(pabyRec+psDBF->panFieldOffset[iField]) = *STATIC_CAST(char*,pValue);
        break;
 
      default:
        if( STATIC_CAST(int, strlen(STATIC_CAST(char *,pValue))) > psDBF->panFieldSize[iField] )
        {
            j = psDBF->panFieldSize[iField];
            nRetResult = FALSE;
        }
        else
        {
            memset( pabyRec+psDBF->panFieldOffset[iField], ' ',
                    psDBF->panFieldSize[iField] );
            j = STATIC_CAST(int, strlen(STATIC_CAST(char *,pValue)));
        }
 
        strncpy(REINTERPRET_CAST(char *, pabyRec+psDBF->panFieldOffset[iField]),
                STATIC_CAST(const char *, pValue), j );
        break;
    }
 
    return( nRetResult );
}

References DBFInfo::bCurrentRecordModified, DBFInfo::bNoHeader, DBFInfo::bUpdated, CPLsnprintf, DBFFlushRecord(), DBFGetNullCharacter(), DBFLoadRecord(), DBFWriteHeader(), FALSE, DBFInfo::nCurrentRecord, DBFInfo::nRecordLength, DBFInfo::nRecords, DBFInfo::pachFieldType, DBFInfo::panFieldDecimals, DBFInfo::panFieldOffset, DBFInfo::panFieldSize, DBFInfo::pszCurrentRecord, REINTERPRET_CAST, SHPLIB_NULLPTR, STATIC_CAST, TRUE, and XBASE_FLD_MAX_WIDTH.

Referenced by DBFWriteDoubleAttribute(), DBFWriteIntegerAttribute(), DBFWriteLogicalAttribute(), DBFWriteNULLAttribute(), and DBFWriteStringAttribute().

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