| /* ==================================================================== |
| Licensed to the Apache Software Foundation (ASF) under one or more |
| contributor license agreements. See the NOTICE file distributed with |
| this work for additional information regarding copyright ownership. |
| The ASF licenses this file to You under the Apache License, Version 2.0 |
| (the "License"); you may not use this file except in compliance with |
| the License. You may obtain a copy of the License at |
| |
| http://www.apache.org/licenses/LICENSE-2.0 |
| |
| Unless required by applicable law or agreed to in writing, software |
| distributed under the License is distributed on an "AS IS" BASIS, |
| WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
| See the License for the specific language governing permissions and |
| limitations under the License. |
| ==================================================================== */ |
| |
| package org.apache.poi.hssf.record; |
| |
| import org.apache.poi.hssf.util.RKUtil; |
| import org.apache.poi.util.LittleEndianOutput; |
| |
| /** |
| * Title: RK Record (0x027E)<p> |
| * Description: An internal 32 bit number with the two most significant bits |
| * storing the type. This is part of a bizarre scheme to save disk |
| * space and memory (gee look at all the other whole records that |
| * are in the file just "cause"..,far better to waste processor |
| * cycles on this then leave on of those "valuable" records out).<p> |
| * We support this in READ-ONLY mode. HSSF converts these to NUMBER records<p> |
| * |
| * REFERENCE: PG 376 Microsoft Excel 97 Developer's Kit (ISBN: 1-57231-498-2) |
| * |
| * @see org.apache.poi.hssf.record.NumberRecord |
| */ |
| public final class RKRecord extends CellRecord { |
| public final static short sid = 0x027E; |
| public final static short RK_IEEE_NUMBER = 0; |
| public final static short RK_IEEE_NUMBER_TIMES_100 = 1; |
| public final static short RK_INTEGER = 2; |
| public final static short RK_INTEGER_TIMES_100 = 3; |
| private int field_4_rk_number; |
| |
| private RKRecord() { |
| // fields uninitialised |
| } |
| |
| public RKRecord(RecordInputStream in) { |
| super(in); |
| field_4_rk_number = in.readInt(); |
| } |
| |
| /** |
| * Extract the value of the number |
| * <P> |
| * The mechanism for determining the value is dependent on the two |
| * low order bits of the raw number. If bit 1 is set, the number |
| * is an integer and can be cast directly as a double, otherwise, |
| * it's apparently the exponent and mantissa of a double (and the |
| * remaining low-order bits of the double's mantissa are 0's). |
| * <P> |
| * If bit 0 is set, the result of the conversion to a double is |
| * divided by 100; otherwise, the value is left alone. |
| * <P> |
| * [insert picture of Screwy Squirrel in full Napoleonic regalia] |
| * |
| * @return the value as a proper double (hey, it <B>could</B> |
| * happen) |
| */ |
| public double getRKNumber() { |
| return RKUtil.decodeNumber(field_4_rk_number); |
| } |
| |
| @Override |
| protected String getRecordName() { |
| return "RK"; |
| } |
| |
| @Override |
| protected void appendValueText(StringBuilder sb) { |
| sb.append(" .value= ").append(getRKNumber()); |
| } |
| |
| @Override |
| protected void serializeValue(LittleEndianOutput out) { |
| out.writeInt(field_4_rk_number); |
| } |
| |
| @Override |
| protected int getValueDataSize() { |
| return 4; |
| } |
| |
| @Override |
| public short getSid() { |
| return sid; |
| } |
| |
| @Override |
| public Object clone() { |
| RKRecord rec = new RKRecord(); |
| copyBaseFields(rec); |
| rec.field_4_rk_number = field_4_rk_number; |
| return rec; |
| } |
| } |