174 lines
5.6 KiB
Java
174 lines
5.6 KiB
Java
/* ====================================================================
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Licensed to the Apache Software Foundation (ASF) under one or more
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contributor license agreements. See the NOTICE file distributed with
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this work for additional information regarding copyright ownership.
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The ASF licenses this file to You under the Apache License, Version 2.0
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(the "License"); you may not use this file except in compliance with
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the License. You may obtain a copy of the License at
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http://www.apache.org/licenses/LICENSE-2.0
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Unless required by applicable law or agreed to in writing, software
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distributed under the License is distributed on an "AS IS" BASIS,
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WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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See the License for the specific language governing permissions and
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limitations under the License.
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==================================================================== */
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package org.apache.poi.hssf.record;
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import org.apache.poi.hssf.util.RKUtil;
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import org.apache.poi.util.HexDump;
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import org.apache.poi.util.LittleEndianOutput;
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/**
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* Title: RK Record (0x027E)<p/>
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* Description: An internal 32 bit number with the two most significant bits
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* storing the type. This is part of a bizarre scheme to save disk
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* space and memory (gee look at all the other whole records that
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* are in the file just "cause"..,far better to waste processor
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* cycles on this then leave on of those "valuable" records out).<p/>
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* We support this in READ-ONLY mode. HSSF converts these to NUMBER records<p/>
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*
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*
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*
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* REFERENCE: PG 376 Microsoft Excel 97 Developer's Kit (ISBN: 1-57231-498-2)<P>
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* @author Andrew C. Oliver (acoliver at apache dot org)
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* @author Jason Height (jheight at chariot dot net dot au)
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* @see org.apache.poi.hssf.record.NumberRecord
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*/
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public final class RKRecord extends StandardRecord implements CellValueRecordInterface {
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public final static short sid = 0x027E;
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public final static short RK_IEEE_NUMBER = 0;
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public final static short RK_IEEE_NUMBER_TIMES_100 = 1;
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public final static short RK_INTEGER = 2;
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public final static short RK_INTEGER_TIMES_100 = 3;
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private int field_1_row;
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private int field_2_col;
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private int field_3_xf_index;
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private int field_4_rk_number;
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private RKRecord()
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{
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}
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public RKRecord(RecordInputStream in)
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{
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field_1_row = in.readUShort();
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field_2_col = in.readUShort();
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field_3_xf_index = in.readUShort();
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field_4_rk_number = in.readInt();
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}
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public int getRow()
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{
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return field_1_row;
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}
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public short getColumn()
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{
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return (short) field_2_col;
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}
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public short getXFIndex()
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{
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return (short) field_3_xf_index;
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}
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public int getRKField()
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{
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return field_4_rk_number;
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}
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/**
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* Get the type of the number
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*
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* @return one of these values:
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* <OL START="0">
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* <LI>RK_IEEE_NUMBER</LI>
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* <LI>RK_IEEE_NUMBER_TIMES_100</LI>
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* <LI>RK_INTEGER</LI>
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* <LI>RK_INTEGER_TIMES_100</LI>
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* </OL>
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*/
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public short getRKType()
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{
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return ( short ) (field_4_rk_number & 3);
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}
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/**
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* Extract the value of the number
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* <P>
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* The mechanism for determining the value is dependent on the two
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* low order bits of the raw number. If bit 1 is set, the number
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* is an integer and can be cast directly as a double, otherwise,
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* it's apparently the exponent and mantissa of a double (and the
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* remaining low-order bits of the double's mantissa are 0's).
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* <P>
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* If bit 0 is set, the result of the conversion to a double is
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* divided by 100; otherwise, the value is left alone.
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* <P>
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* [insert picture of Screwy Squirrel in full Napoleonic regalia]
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*
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* @return the value as a proper double (hey, it <B>could</B>
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* happen)
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*/
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public double getRKNumber()
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{
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return RKUtil.decodeNumber(field_4_rk_number);
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}
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public String toString()
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{
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StringBuffer sb = new StringBuffer();
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sb.append("[RK]\n");
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sb.append(" .row = ").append(HexDump.shortToHex(getRow())).append("\n");
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sb.append(" .col = ").append(HexDump.shortToHex(getColumn())).append("\n");
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sb.append(" .xfindex = ").append(HexDump.shortToHex(getXFIndex())).append("\n");
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sb.append(" .rknumber = ").append(HexDump.intToHex(getRKField())).append("\n");
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sb.append(" .rktype = ").append(HexDump.byteToHex(getRKType())).append("\n");
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sb.append(" .rknumber= ").append(getRKNumber()).append("\n");
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sb.append("[/RK]\n");
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return sb.toString();
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}
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public void serialize(LittleEndianOutput out) {
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throw new RecordFormatException( "Sorry, you can't serialize RK in this release");
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}
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protected int getDataSize() {
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throw new RecordFormatException( "Sorry, you can't serialize RK in this release");
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}
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public short getSid()
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{
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return sid;
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}
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public void setColumn(short col)
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{
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}
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public void setRow(int row)
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{
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}
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/**
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* NO OP!
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*/
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public void setXFIndex(short xf)
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{
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}
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public Object clone() {
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RKRecord rec = new RKRecord();
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rec.field_1_row = field_1_row;
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rec.field_2_col = field_2_col;
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rec.field_3_xf_index = field_3_xf_index;
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rec.field_4_rk_number = field_4_rk_number;
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return rec;
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}
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}
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