make max record sizes configurable

git-svn-id: https://svn.apache.org/repos/asf/poi/trunk@1894452 13f79535-47bb-0310-9956-ffa450edef68

16 files changed, 256 insertions, 17 deletions

diff --git a/poi/src/main/java/org/apache/poi/ddf/EscherBSERecord.java b/poi/src/main/java/org/apache/poi/ddf/EscherBSERecord.java
index 08f3a0c694..0d6ad788fa 100644
--- a/poi/src/main/java/org/apache/poi/ddf/EscherBSERecord.java
+++ b/poi/src/main/java/org/apache/poi/ddf/EscherBSERecord.java
@@ -36,7 +36,8 @@ import org.apache.poi.util.LittleEndian;
 public final class EscherBSERecord extends EscherRecord {
 
     //arbitrarily selected; may need to increase
-    private static final int MAX_RECORD_LENGTH = 100_000;
+    private static final int DEFAULT_MAX_RECORD_LENGTH = 100_000;
+    private static int MAX_RECORD_LENGTH = DEFAULT_MAX_RECORD_LENGTH;
 
     public static final short RECORD_ID = EscherRecordTypes.BSE.typeID;
 
@@ -55,6 +56,20 @@ public final class EscherBSERecord extends EscherRecord {
 
     private byte[] _remainingData = new byte[0];
 
+    /**
+     * @param length the max length allowed for EscherBSERecord
+     */
+    public static void setMaxRecordLength(int length) {
+        MAX_RECORD_LENGTH = length;
+    }
+
+    /**
+     * @return the max length allowed for EscherBSERecord
+     */
+    public static int getMaxRecordLength() {
+        return MAX_RECORD_LENGTH;
+    }
+
     public EscherBSERecord() {
         setRecordId(RECORD_ID);
     }
diff --git a/poi/src/main/java/org/apache/poi/ddf/EscherBlipRecord.java b/poi/src/main/java/org/apache/poi/ddf/EscherBlipRecord.java
index c9e6d73e5c..860798b6fe 100644
--- a/poi/src/main/java/org/apache/poi/ddf/EscherBlipRecord.java
+++ b/poi/src/main/java/org/apache/poi/ddf/EscherBlipRecord.java
@@ -27,7 +27,8 @@ import org.apache.poi.util.LittleEndian;
 public class EscherBlipRecord extends EscherRecord {
 
     //arbitrarily selected; may need to increase
-    private static final int MAX_RECORD_LENGTH = 104_857_600;
+    private static final int DEFAULT_MAX_RECORD_LENGTH = 104_857_600;
+    private static int MAX_RECORD_LENGTH = DEFAULT_MAX_RECORD_LENGTH;
 
     public static final short  RECORD_ID_START    = EscherRecordTypes.BLIP_START.typeID;
     public static final short  RECORD_ID_END      = EscherRecordTypes.BLIP_END.typeID;
@@ -36,6 +37,20 @@ public class EscherBlipRecord extends EscherRecord {
 
     private byte[] field_pictureData;
 
+    /**
+     * @param length the max length allowed for EscherBlipRecord
+     */
+    public static void setMaxRecordLength(int length) {
+        MAX_RECORD_LENGTH = length;
+    }
+
+    /**
+     * @return the max length allowed for EscherBlipRecord
+     */
+    public static int getMaxRecordLength() {
+        return MAX_RECORD_LENGTH;
+    }
+
     public EscherBlipRecord() {
     }
 
diff --git a/poi/src/main/java/org/apache/poi/ddf/EscherClientAnchorRecord.java b/poi/src/main/java/org/apache/poi/ddf/EscherClientAnchorRecord.java
index 5d182da247..b684014be5 100644
--- a/poi/src/main/java/org/apache/poi/ddf/EscherClientAnchorRecord.java
+++ b/poi/src/main/java/org/apache/poi/ddf/EscherClientAnchorRecord.java
@@ -36,7 +36,8 @@ import org.apache.poi.util.LittleEndian;
  */
 public class EscherClientAnchorRecord extends EscherRecord {
     //arbitrarily selected; may need to increase
-    private static final int MAX_RECORD_LENGTH = 100_000;
+    private static final int DEFAULT_MAX_RECORD_LENGTH = 100_000;
+    private static int MAX_RECORD_LENGTH = DEFAULT_MAX_RECORD_LENGTH;
 
     public static final short RECORD_ID = EscherRecordTypes.CLIENT_ANCHOR.typeID;
 
@@ -60,6 +61,20 @@ public class EscherClientAnchorRecord extends EscherRecord {
     private byte[] remainingData = new byte[0];
     private boolean shortRecord;
 
+    /**
+     * @param length the max length allowed for EscherClientAnchorRecord
+     */
+    public static void setMaxRecordLength(int length) {
+        MAX_RECORD_LENGTH = length;
+    }
+
+    /**
+     * @return the max length allowed for EscherClientAnchorRecord
+     */
+    public static int getMaxRecordLength() {
+        return MAX_RECORD_LENGTH;
+    }
+
     public EscherClientAnchorRecord() {}
 
     public EscherClientAnchorRecord(EscherClientAnchorRecord other) {
diff --git a/poi/src/main/java/org/apache/poi/ddf/EscherClientDataRecord.java b/poi/src/main/java/org/apache/poi/ddf/EscherClientDataRecord.java
index 80f4f9e7e4..aab9249f8e 100644
--- a/poi/src/main/java/org/apache/poi/ddf/EscherClientDataRecord.java
+++ b/poi/src/main/java/org/apache/poi/ddf/EscherClientDataRecord.java
@@ -34,11 +34,26 @@ public class EscherClientDataRecord extends EscherRecord {
     public static final short RECORD_ID = EscherRecordTypes.CLIENT_DATA.typeID;
 
     //arbitrarily selected; may need to increase
-    private static final int MAX_RECORD_LENGTH = 100_000;
+    private static final int DEFAULT_MAX_RECORD_LENGTH = 100_000;
+    private static int MAX_RECORD_LENGTH = DEFAULT_MAX_RECORD_LENGTH;
     private static final byte[] EMPTY = {};
 
     private byte[] remainingData;
 
+    /**
+     * @param length the max length allowed for EscherClientDataRecord
+     */
+    public static void setMaxRecordLength(int length) {
+        MAX_RECORD_LENGTH = length;
+    }
+
+    /**
+     * @return the max length allowed for EscherClientDataRecord
+     */
+    public static int getMaxRecordLength() {
+        return MAX_RECORD_LENGTH;
+    }
+
     public EscherClientDataRecord() {}
 
     public EscherClientDataRecord(EscherClientDataRecord other) {
diff --git a/poi/src/main/java/org/apache/poi/ddf/EscherMetafileBlip.java b/poi/src/main/java/org/apache/poi/ddf/EscherMetafileBlip.java
index c5fac266e3..bb63ce40f5 100644
--- a/poi/src/main/java/org/apache/poi/ddf/EscherMetafileBlip.java
+++ b/poi/src/main/java/org/apache/poi/ddf/EscherMetafileBlip.java
@@ -41,7 +41,8 @@ import org.apache.poi.util.Removal;
 public final class EscherMetafileBlip extends EscherBlipRecord {
     private static final Logger LOGGER = LogManager.getLogger(EscherMetafileBlip.class);
     //arbitrarily selected; may need to increase
-    private static final int MAX_RECORD_LENGTH = 100_000_000;
+    private static final int DEFAULT_MAX_RECORD_LENGTH = 100_000_000;
+    private static int MAX_RECORD_LENGTH = DEFAULT_MAX_RECORD_LENGTH;
 
     /** @deprecated use EscherRecordTypes.BLIP_EMF.typeID */
     @Deprecated
@@ -77,6 +78,20 @@ public final class EscherMetafileBlip extends EscherBlipRecord {
     private byte[] raw_pictureData;
     private byte[] remainingData;
 
+    /**
+     * @param length the max length allowed for EscherMetafileBlip
+     */
+    public static void setMaxRecordLength(int length) {
+        MAX_RECORD_LENGTH = length;
+    }
+
+    /**
+     * @return the max length allowed for EscherMetafileBlip
+     */
+    public static int getMaxRecordLength() {
+        return MAX_RECORD_LENGTH;
+    }
+
     public EscherMetafileBlip() {}
 
     public EscherMetafileBlip(EscherMetafileBlip other) {
diff --git a/poi/src/main/java/org/apache/poi/ddf/EscherTextboxRecord.java b/poi/src/main/java/org/apache/poi/ddf/EscherTextboxRecord.java
index dced174318..0105bc5c1e 100644
--- a/poi/src/main/java/org/apache/poi/ddf/EscherTextboxRecord.java
+++ b/poi/src/main/java/org/apache/poi/ddf/EscherTextboxRecord.java
@@ -34,15 +34,30 @@ import org.apache.poi.util.RecordFormatException;
 public final class EscherTextboxRecord extends EscherRecord {
 
     //arbitrarily selected; may need to increase
-    private static final int MAX_RECORD_LENGTH = 100_000;
+    private static int DEFAULT_MAX_RECORD_LENGTH = 100_000;
+    private static int MAX_RECORD_LENGTH = DEFAULT_MAX_RECORD_LENGTH;
 
     public static final short RECORD_ID = EscherRecordTypes.CLIENT_TEXTBOX.typeID;
 
     private static final byte[] NO_BYTES = new byte[0];
 
-    /** The data for this record not including the the 8 byte header */
+    /** The data for this record not including the 8 byte header */
     private byte[] thedata = NO_BYTES;
 
+    /**
+     * @param length the max length allowed for EscherTextboxRecord
+     */
+    public static void setMaxRecordLength(int length) {
+        MAX_RECORD_LENGTH = length;
+    }
+
+    /**
+     * @return the max length allowed for EscherTextboxRecord
+     */
+    public static int getMaxRecordLength() {
+        return MAX_RECORD_LENGTH;
+    }
+
     public EscherTextboxRecord() {}
 
     public EscherTextboxRecord(EscherTextboxRecord other) {
diff --git a/poi/src/main/java/org/apache/poi/hpsf/Blob.java b/poi/src/main/java/org/apache/poi/hpsf/Blob.java
index 6c6e17c660..737462c667 100644
--- a/poi/src/main/java/org/apache/poi/hpsf/Blob.java
+++ b/poi/src/main/java/org/apache/poi/hpsf/Blob.java
@@ -24,10 +24,25 @@ import org.apache.poi.util.LittleEndianInput;
 public class Blob {
 
     //arbitrarily selected; may need to increase
-    private static final int MAX_RECORD_LENGTH = 10_000_000;
+    private static final int DEFAULT_MAX_RECORD_LENGTH = 10_000_000;
+    private static int MAX_RECORD_LENGTH = DEFAULT_MAX_RECORD_LENGTH;
 
     private byte[] _value;
 
+    /**
+     * @param length the max length allowed for Blob
+     */
+    public static void setMaxRecordLength(int length) {
+        MAX_RECORD_LENGTH = length;
+    }
+
+    /**
+     * @return the max length allowed for Blob
+     */
+    public static int getMaxRecordLength() {
+        return MAX_RECORD_LENGTH;
+    }
+
     public void read( LittleEndianInput lei ) {
         int size = lei.readInt();
         _value = IOUtils.safelyAllocate(size, MAX_RECORD_LENGTH);
diff --git a/poi/src/main/java/org/apache/poi/hpsf/ClipboardData.java b/poi/src/main/java/org/apache/poi/hpsf/ClipboardData.java
index d92269a785..94e8edd3c2 100644
--- a/poi/src/main/java/org/apache/poi/hpsf/ClipboardData.java
+++ b/poi/src/main/java/org/apache/poi/hpsf/ClipboardData.java
@@ -29,13 +29,28 @@ import static org.apache.logging.log4j.util.Unbox.box;
 @Internal
 public class ClipboardData {
     //arbitrarily selected; may need to increase
-    private static final int MAX_RECORD_LENGTH = 100_000_000;
+    private static final int DEFAULT_MAX_RECORD_LENGTH = 100_000_000;
+    private static int MAX_RECORD_LENGTH = DEFAULT_MAX_RECORD_LENGTH;
 
     private static final Logger LOG = LogManager.getLogger(ClipboardData.class);
 
     private int _format;
     private byte[] _value;
 
+    /**
+     * @param length the max length allowed for ClipboardData
+     */
+    public static void setMaxRecordLength(int length) {
+        MAX_RECORD_LENGTH = length;
+    }
+
+    /**
+     * @return the max length allowed for ClipboardData
+     */
+    public static int getMaxRecordLength() {
+        return MAX_RECORD_LENGTH;
+    }
+
     public void read( LittleEndianByteArrayInputStream lei ) {
         int offset = lei.getReadIndex();
         long size = lei.readInt();
diff --git a/poi/src/main/java/org/apache/poi/hpsf/CodePageString.java b/poi/src/main/java/org/apache/poi/hpsf/CodePageString.java
index 4ba9b0d063..ee2c69487a 100644
--- a/poi/src/main/java/org/apache/poi/hpsf/CodePageString.java
+++ b/poi/src/main/java/org/apache/poi/hpsf/CodePageString.java
@@ -34,12 +34,26 @@ import static org.apache.logging.log4j.util.Unbox.box;
 @Internal
 public class CodePageString {
     //arbitrarily selected; may need to increase
-    private static final int MAX_RECORD_LENGTH = 100_000;
+    private static final int DEFAULT_MAX_RECORD_LENGTH = 100_000;
+    private static int MAX_RECORD_LENGTH = DEFAULT_MAX_RECORD_LENGTH;
 
     private static final Logger LOG = LogManager.getLogger(CodePageString.class);
 
     private byte[] _value;
 
+    /**
+     * @param length the max length allowed for CodePageString
+     */
+    public static void setMaxRecordLength(int length) {
+        MAX_RECORD_LENGTH = length;
+    }
+
+    /**
+     * @return the max length allowed for CodePageString
+     */
+    public static int getMaxRecordLength() {
+        return MAX_RECORD_LENGTH;
+    }
 
     public void read( LittleEndianByteArrayInputStream lei ) {
         int offset = lei.getReadIndex();
diff --git a/poi/src/main/java/org/apache/poi/poifs/crypt/ChunkedCipherInputStream.java b/poi/src/main/java/org/apache/poi/poifs/crypt/ChunkedCipherInputStream.java
index 827ee4c0a7..c0ff0fc2d3 100644
--- a/poi/src/main/java/org/apache/poi/poifs/crypt/ChunkedCipherInputStream.java
+++ b/poi/src/main/java/org/apache/poi/poifs/crypt/ChunkedCipherInputStream.java
@@ -32,7 +32,8 @@ import org.apache.poi.util.LittleEndianInputStream;
 public abstract class ChunkedCipherInputStream extends LittleEndianInputStream {
 
     //arbitrarily selected; may need to increase
-    private static final int MAX_RECORD_LENGTH = 100_000;
+    private static final int DEFAULT_MAX_RECORD_LENGTH = 100_000;
+    private static int MAX_RECORD_LENGTH = DEFAULT_MAX_RECORD_LENGTH;
 
     private final int chunkSize;
     private final int chunkBits;
@@ -45,6 +46,20 @@ public abstract class ChunkedCipherInputStream extends LittleEndianInputStream {
     private long pos;
     private boolean chunkIsValid;
 
+    /**
+     * @param length the max length allowed for ChunkedCipherInputStream
+     */
+    public static void setMaxRecordLength(int length) {
+        MAX_RECORD_LENGTH = length;
+    }
+
+    /**
+     * @return the max length allowed for ChunkedCipherInputStream
+     */
+    public static int getMaxRecordLength() {
+        return MAX_RECORD_LENGTH;
+    }
+
     public ChunkedCipherInputStream(InputStream stream, long size, int chunkSize)
     throws GeneralSecurityException {
         this(stream, size, chunkSize, 0);
diff --git a/poi/src/main/java/org/apache/poi/poifs/crypt/ChunkedCipherOutputStream.java b/poi/src/main/java/org/apache/poi/poifs/crypt/ChunkedCipherOutputStream.java
index 9cd5c224ba..014a60c16d 100644
--- a/poi/src/main/java/org/apache/poi/poifs/crypt/ChunkedCipherOutputStream.java
+++ b/poi/src/main/java/org/apache/poi/poifs/crypt/ChunkedCipherOutputStream.java
@@ -44,7 +44,8 @@ import org.apache.poi.util.TempFile;
 public abstract class ChunkedCipherOutputStream extends FilterOutputStream {
     private static final Logger LOG = LogManager.getLogger(ChunkedCipherOutputStream.class);
     //arbitrarily selected; may need to increase
-    private static final int MAX_RECORD_LENGTH = 100_000;
+    private static final int DEFAULT_MAX_RECORD_LENGTH = 100_000;
+    private static int MAX_RECORD_LENGTH = DEFAULT_MAX_RECORD_LENGTH;
 
     private static final int STREAMING = -1;
 
@@ -65,6 +66,20 @@ public abstract class ChunkedCipherOutputStream extends FilterOutputStream {
     private Cipher cipher;
     private boolean isClosed;
 
+    /**
+     * @param length the max length allowed for ChunkedCipherOutputStream
+     */
+    public static void setMaxRecordLength(int length) {
+        MAX_RECORD_LENGTH = length;
+    }
+
+    /**
+     * @return the max length allowed for ChunkedCipherOutputStream
+     */
+    public static int getMaxRecordLength() {
+        return MAX_RECORD_LENGTH;
+    }
+
     public ChunkedCipherOutputStream(DirectoryNode dir, int chunkSize) throws IOException, GeneralSecurityException {
         super(null);
         this.chunkSize = chunkSize;
diff --git a/poi/src/main/java/org/apache/poi/poifs/crypt/DataSpaceMapUtils.java b/poi/src/main/java/org/apache/poi/poifs/crypt/DataSpaceMapUtils.java
index 09a56e2e81..d83754c6f6 100644
--- a/poi/src/main/java/org/apache/poi/poifs/crypt/DataSpaceMapUtils.java
+++ b/poi/src/main/java/org/apache/poi/poifs/crypt/DataSpaceMapUtils.java
@@ -36,7 +36,22 @@ import org.apache.poi.util.StringUtil;
 public class DataSpaceMapUtils {
 
     //arbitrarily selected; may need to increase
-    private static final int MAX_RECORD_LENGTH = 100_000;
+    private static final int DEFAULT_MAX_RECORD_LENGTH = 100_000;
+    private static int MAX_RECORD_LENGTH = DEFAULT_MAX_RECORD_LENGTH;
+
+    /**
+     * @param length the max length allowed for EscherTextboxRecord
+     */
+    public static void setMaxRecordLength(int length) {
+        MAX_RECORD_LENGTH = length;
+    }
+
+    /**
+     * @return the max length allowed for EscherTextboxRecord
+     */
+    public static int getMaxRecordLength() {
+        return MAX_RECORD_LENGTH;
+    }
 
     public static void addDefaultDataSpace(DirectoryEntry dir) throws IOException {
         DataSpaceMapEntry dsme = new DataSpaceMapEntry(
diff --git a/poi/src/main/java/org/apache/poi/ss/extractor/EmbeddedExtractor.java b/poi/src/main/java/org/apache/poi/ss/extractor/EmbeddedExtractor.java
index 47793a14c1..bfb4caabf5 100644
--- a/poi/src/main/java/org/apache/poi/ss/extractor/EmbeddedExtractor.java
+++ b/poi/src/main/java/org/apache/poi/ss/extractor/EmbeddedExtractor.java
@@ -58,7 +58,8 @@ import org.apache.poi.util.LocaleUtil;
 public class EmbeddedExtractor implements Iterable<EmbeddedExtractor> {
     private static final Logger LOG = LogManager.getLogger(EmbeddedExtractor.class);
     //arbitrarily selected; may need to increase
-    private static final int MAX_RECORD_LENGTH = 1_000_000;
+    private static final int DEFAULT_MAX_RECORD_LENGTH = 1_000_000;
+    private static int MAX_RECORD_LENGTH = DEFAULT_MAX_RECORD_LENGTH;
 
     // contentType
     private static final String CONTENT_TYPE_BYTES = "binary/octet-stream";
@@ -67,6 +68,20 @@ public class EmbeddedExtractor implements Iterable<EmbeddedExtractor> {
     private static final String CONTENT_TYPE_XLS = "application/vnd.ms-excel";
 
     /**
+     * @param length the max length allowed for EmbeddedExtractor
+     */
+    public static void setMaxRecordLength(int length) {
+        MAX_RECORD_LENGTH = length;
+    }
+
+    /**
+     * @return the max length allowed for EmbeddedExtractor
+     */
+    public static int getMaxRecordLength() {
+        return MAX_RECORD_LENGTH;
+    }
+
+    /**
      * @return the list of known extractors, if you provide custom extractors, override this method
      */
     @Override
diff --git a/poi/src/main/java/org/apache/poi/ss/formula/function/FunctionMetadataReader.java b/poi/src/main/java/org/apache/poi/ss/formula/function/FunctionMetadataReader.java
index 236546c3b4..a44379c37a 100644
--- a/poi/src/main/java/org/apache/poi/ss/formula/function/FunctionMetadataReader.java
+++ b/poi/src/main/java/org/apache/poi/ss/formula/function/FunctionMetadataReader.java
@@ -36,7 +36,8 @@ import org.apache.poi.util.IOUtils;
 final class FunctionMetadataReader {
 
     //arbitrarily selected; may need to increase
-    private static final int MAX_RECORD_LENGTH = 100_000;
+    private static final int DEFAULT_MAX_RECORD_LENGTH = 100_000;
+    private static int MAX_RECORD_LENGTH = DEFAULT_MAX_RECORD_LENGTH;
 
     private static final String METADATA_FILE_NAME = "functionMetadata.txt";
     private static final String METADATA_FILE_NAME_CETAB = "functionMetadataCetab.txt";
@@ -55,6 +56,20 @@ final class FunctionMetadataReader {
     };
     private static final Set<String> DIGIT_ENDING_FUNCTION_NAMES_SET = new HashSet<>(Arrays.asList(DIGIT_ENDING_FUNCTION_NAMES));
 
+    /**
+     * @param length the max length allowed for FunctionMetadataReader
+     */
+    public static void setMaxRecordLength(int length) {
+        MAX_RECORD_LENGTH = length;
+    }
+
+    /**
+     * @return the max length allowed for FunctionMetadataReader
+     */
+    public static int getMaxRecordLength() {
+        return MAX_RECORD_LENGTH;
+    }
+
     public static FunctionMetadataRegistry createRegistry() {
         FunctionDataBuilder fdb = new FunctionDataBuilder(800);
         readResourceFile(fdb, METADATA_FILE_NAME);
diff --git a/poi/src/main/java/org/apache/poi/util/LZWDecompresser.java b/poi/src/main/java/org/apache/poi/util/LZWDecompresser.java
index 1a0052e08b..1fc9573ee0 100644
--- a/poi/src/main/java/org/apache/poi/util/LZWDecompresser.java
+++ b/poi/src/main/java/org/apache/poi/util/LZWDecompresser.java
@@ -40,7 +40,8 @@ public abstract class LZWDecompresser {
     public static final int DICT_MASK = 0xFFF;
 
     //arbitrarily selected; may need to increase
-    private static final int MAX_RECORD_LENGTH = 1_000_000;
+    private static final int DEFAULT_MAX_RECORD_LENGTH = 1_000_000;
+    private static int MAX_RECORD_LENGTH = DEFAULT_MAX_RECORD_LENGTH;
 
     /**
      * Does the mask bit mean it's compressed or uncompressed?
@@ -59,6 +60,20 @@ public abstract class LZWDecompresser {
      */
     private final boolean positionIsBigEndian;
 
+    /**
+     * @param length the max length allowed for LZWDecompresser
+     */
+    public static void setMaxRecordLength(int length) {
+        MAX_RECORD_LENGTH = length;
+    }
+
+    /**
+     * @return the max length allowed for LZWDecompresser
+     */
+    public static int getMaxRecordLength() {
+        return MAX_RECORD_LENGTH;
+    }
+
     protected LZWDecompresser(boolean maskMeansCompressed,
                               int codeLengthIncrease, boolean positionIsBigEndian) {
         this.maskMeansCompressed = maskMeansCompressed;
diff --git a/poi/src/main/java/org/apache/poi/util/StringUtil.java b/poi/src/main/java/org/apache/poi/util/StringUtil.java
index c635a536cd..c805dd4517 100644
--- a/poi/src/main/java/org/apache/poi/util/StringUtil.java
+++ b/poi/src/main/java/org/apache/poi/util/StringUtil.java
@@ -29,12 +29,27 @@ import java.util.Locale;
 @Internal
 public final class StringUtil {
     //arbitrarily selected; may need to increase
-    private static final int MAX_RECORD_LENGTH = 10000000;
+    private static final int DEFAULT_MAX_RECORD_LENGTH = 10000000;
+    private static int MAX_RECORD_LENGTH = DEFAULT_MAX_RECORD_LENGTH;
 
     public static final Charset UTF16LE = StandardCharsets.UTF_16LE;
     public static final Charset UTF8 = StandardCharsets.UTF_8;
     public static final Charset WIN_1252 = Charset.forName("cp1252");
 
+    /**
+     * @param length the max length allowed for StringUtil
+     */
+    public static void setMaxRecordLength(int length) {
+        MAX_RECORD_LENGTH = length;
+    }
+
+    /**
+     * @return the max length allowed for StringUtil
+     */
+    public static int getMaxRecordLength() {
+        return MAX_RECORD_LENGTH;
+    }
+
     private StringUtil() {
         // no instances of this class
     }