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- /* ====================================================================
- 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.util.HexDump;
- import org.apache.poi.util.LittleEndianOutput;
-
- /**
- * Title: DBCell Record (0x00D7)<p/>
- * Description: Used by Excel and other MS apps to quickly find rows in the sheets.<P>
- * REFERENCE: PG 299/440 Microsoft Excel 97 Developer's Kit (ISBN: 1-57231-498-2)<P>
- * @author Andrew C. Oliver (acoliver at apache dot org)
- * @author Jason Height
- */
- public final class DBCellRecord extends StandardRecord {
- public final static short sid = 0x00D7;
- public final static int BLOCK_SIZE = 32;
-
- public static final class Builder {
- private short[] _cellOffsets;
- private int _nCellOffsets;
- public Builder() {
- _cellOffsets = new short[4];
- }
-
- public void addCellOffset(int cellRefOffset) {
- if (_cellOffsets.length <= _nCellOffsets) {
- short[] temp = new short[_nCellOffsets * 2];
- System.arraycopy(_cellOffsets, 0, temp, 0, _nCellOffsets);
- _cellOffsets = temp;
- }
- _cellOffsets[_nCellOffsets] = (short) cellRefOffset;
- _nCellOffsets++;
- }
-
- public DBCellRecord build(int rowOffset) {
- short[] cellOffsets = new short[_nCellOffsets];
- System.arraycopy(_cellOffsets, 0, cellOffsets, 0, _nCellOffsets);
- return new DBCellRecord(rowOffset, cellOffsets);
- }
- }
- /**
- * offset from the start of this DBCellRecord to the start of the first cell in
- * the next DBCell block.
- */
- private final int field_1_row_offset;
- private final short[] field_2_cell_offsets;
-
- DBCellRecord(int rowOffset, short[]cellOffsets) {
- field_1_row_offset = rowOffset;
- field_2_cell_offsets = cellOffsets;
- }
-
- public DBCellRecord(RecordInputStream in) {
- field_1_row_offset = in.readUShort();
- int size = in.remaining();
- field_2_cell_offsets = new short[ size / 2 ];
-
- for (int i=0;i<field_2_cell_offsets.length;i++)
- {
- field_2_cell_offsets[ i ] = in.readShort();
- }
- }
-
-
- public String toString() {
- StringBuffer buffer = new StringBuffer();
-
- buffer.append("[DBCELL]\n");
- buffer.append(" .rowoffset = ").append(HexDump.intToHex(field_1_row_offset)).append("\n");
- for (int k = 0; k < field_2_cell_offsets.length; k++) {
- buffer.append(" .cell_").append(k).append(" = ")
- .append(HexDump.shortToHex(field_2_cell_offsets[ k ])).append("\n");
- }
- buffer.append("[/DBCELL]\n");
- return buffer.toString();
- }
-
- public void serialize(LittleEndianOutput out) {
- out.writeInt(field_1_row_offset);
- for (int k = 0; k < field_2_cell_offsets.length; k++) {
- out.writeShort(field_2_cell_offsets[ k ]);
- }
- }
- protected int getDataSize() {
- return 4 + field_2_cell_offsets.length * 2;
- }
-
- /**
- * @return the size of the group of <tt>DBCellRecord</tt>s needed to encode
- * the specified number of blocks and rows
- */
- public static int calculateSizeOfRecords(int nBlocks, int nRows) {
- // One DBCell per block.
- // 8 bytes per DBCell (non variable section)
- // 2 bytes per row reference
- return nBlocks * 8 + nRows * 2;
- }
-
- public short getSid() {
- return sid;
- }
-
- public Object clone() {
- // safe because immutable
- return this;
- }
- }
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