126 lines
4.8 KiB
Java
126 lines
4.8 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.ss.formula.ptg.*;
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import org.apache.poi.hssf.util.CellRangeAddress8Bit;
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import org.apache.poi.ss.formula.Formula;
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import org.apache.poi.ss.SpreadsheetVersion;
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import org.apache.poi.ss.formula.SharedFormula;
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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: SHAREDFMLA (0x04BC) SharedFormulaRecord
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* Description: Primarily used as an excel optimization so that multiple similar formulas
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* are not written out too many times. We should recognize this record and
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* serialize as is since this is used when reading templates.
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* <p>
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* Note: the documentation says that the SID is BC where biffviewer reports 4BC. The hex dump shows
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* that the two byte sid representation to be 'BC 04' that is consistent with the other high byte
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* record types.
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* @author Danny Mui at apache dot org
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*/
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public final class SharedFormulaRecord extends SharedValueRecordBase {
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public final static short sid = 0x04BC;
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private int field_5_reserved;
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private Formula field_7_parsed_expr;
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// for testing only
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public SharedFormulaRecord() {
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this(new CellRangeAddress8Bit(0,0,0,0));
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}
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private SharedFormulaRecord(CellRangeAddress8Bit range) {
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super(range);
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field_7_parsed_expr = Formula.create(Ptg.EMPTY_PTG_ARRAY);
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}
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/**
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* @param in the RecordInputstream to read the record from
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*/
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public SharedFormulaRecord(RecordInputStream in) {
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super(in);
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field_5_reserved = in.readShort();
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int field_6_expression_len = in.readShort();
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int nAvailableBytes = in.available();
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field_7_parsed_expr = Formula.read(field_6_expression_len, in, nAvailableBytes);
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}
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protected void serializeExtraData(LittleEndianOutput out) {
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out.writeShort(field_5_reserved);
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field_7_parsed_expr.serialize(out);
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}
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protected int getExtraDataSize() {
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return 2 + field_7_parsed_expr.getEncodedSize();
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}
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/**
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* print a sort of string representation ([SHARED FORMULA RECORD] id = x [/SHARED FORMULA RECORD])
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*/
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public String toString()
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{
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StringBuffer buffer = new StringBuffer();
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buffer.append("[SHARED FORMULA (").append(HexDump.intToHex(sid)).append("]\n");
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buffer.append(" .range = ").append(getRange().toString()).append("\n");
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buffer.append(" .reserved = ").append(HexDump.shortToHex(field_5_reserved)).append("\n");
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Ptg[] ptgs = field_7_parsed_expr.getTokens();
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for (int k = 0; k < ptgs.length; k++ ) {
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buffer.append("Formula[").append(k).append("]");
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Ptg ptg = ptgs[k];
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buffer.append(ptg.toString()).append(ptg.getRVAType()).append("\n");
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}
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buffer.append("[/SHARED FORMULA]\n");
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return buffer.toString();
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}
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public short getSid() {
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return sid;
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}
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/**
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* @return the equivalent {@link Ptg} array that the formula would have, were it not shared.
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*/
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public Ptg[] getFormulaTokens(FormulaRecord formula) {
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int formulaRow = formula.getRow();
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int formulaColumn = formula.getColumn();
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//Sanity checks
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if (!isInRange(formulaRow, formulaColumn)) {
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throw new RuntimeException("Shared Formula Conversion: Coding Error");
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}
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SharedFormula sf = new SharedFormula(SpreadsheetVersion.EXCEL97);
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return sf.convertSharedFormulas(field_7_parsed_expr.getTokens(), formulaRow, formulaColumn);
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}
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public Object clone() {
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SharedFormulaRecord result = new SharedFormulaRecord(getRange());
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result.field_5_reserved = field_5_reserved;
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result.field_7_parsed_expr = field_7_parsed_expr.copy();
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return result;
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}
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public boolean isFormulaSame(SharedFormulaRecord other) {
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return field_7_parsed_expr.isSame(other.field_7_parsed_expr);
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}
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}
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