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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 java.io.UnsupportedEncodingException;
- import java.util.Map;
- import java.util.function.Supplier;
-
- import org.apache.poi.common.usermodel.GenericRecord;
- import org.apache.poi.hpsf.Property;
- import org.apache.poi.util.CodePageUtil;
- import org.apache.poi.util.GenericRecordJsonWriter;
- import org.apache.poi.util.GenericRecordUtil;
- import org.apache.poi.util.IOUtils;
-
-
- /**
- * Biff2 - Biff 4 Label Record (0x0007 / 0x0207) - read only support for
- * formula string results.
- */
- public final class OldStringRecord implements GenericRecord {
-
- //arbitrarily selected; may need to increase
- private static final int MAX_RECORD_LENGTH = 100_000;
-
- public static final short biff2_sid = 0x0007;
- public static final short biff345_sid = 0x0207;
-
- private short sid;
- private short field_1_string_len;
- private byte[] field_2_bytes;
- private CodepageRecord codepage;
-
- /**
- * @param in the RecordInputstream to read the record from
- */
- public OldStringRecord(RecordInputStream in) {
- sid = in.getSid();
-
- if (in.getSid() == biff2_sid) {
- field_1_string_len = (short)in.readUByte();
- } else {
- field_1_string_len = in.readShort();
- }
-
- // Can only decode properly later when you know the codepage
- field_2_bytes = IOUtils.safelyAllocate(field_1_string_len, MAX_RECORD_LENGTH);
- in.read(field_2_bytes, 0, field_1_string_len);
- }
-
- public boolean isBiff2() {
- return sid == biff2_sid;
- }
-
- public short getSid() {
- return sid;
- }
-
- public void setCodePage(CodepageRecord codepage) {
- this.codepage = codepage;
- }
-
- /**
- * @return The string represented by this record.
- */
- public String getString()
- {
- return getString(field_2_bytes, codepage);
- }
-
- protected static String getString(byte[] data, CodepageRecord codepage) {
- int cp = Property.DEFAULT_CODEPAGE;
- if (codepage != null) {
- cp = codepage.getCodepage() & 0xffff;
- }
- try {
- return CodePageUtil.getStringFromCodePage(data, cp);
- } catch (UnsupportedEncodingException uee) {
- throw new IllegalArgumentException("Unsupported codepage requested", uee);
- }
- }
-
- @Override
- public HSSFRecordTypes getGenericRecordType() {
- return HSSFRecordTypes.STRING;
- }
-
- @Override
- public Map<String, Supplier<?>> getGenericProperties() {
- return GenericRecordUtil.getGenericProperties("string", this::getString);
- }
-
- public String toString() {
- return GenericRecordJsonWriter.marshal(this);
- }
- }
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