本文整理了Java中org.apache.poi.util.IOUtils.safelyAllocate()方法的一些代码示例，展示了IOUtils.safelyAllocate()的具体用法。这些代码示例主要来源于Github/Stackoverflow/Maven等平台，是从一些精选项目中提取出来的代码，具有较强的参考意义，能在一定程度帮忙到你。IOUtils.safelyAllocate()方法的具体详情如下：
包路径：org.apache.poi.util.IOUtils
类名称：IOUtils
方法名：safelyAllocate

IOUtils.safelyAllocate介绍

暂无

代码示例

代码示例来源：origin: org.apache.poi/poi

public ChunkedCipherInputStream(InputStream stream, long size, int chunkSize, int initialPos)
throws GeneralSecurityException {
  super(stream);
  this.size = size;
  this.pos = initialPos;
  this.chunkSize = chunkSize;
  int cs = chunkSize == -1 ? 4096 : chunkSize;
  this.chunk = IOUtils.safelyAllocate(cs, MAX_RECORD_LENGTH);
  this.plain = IOUtils.safelyAllocate(cs, MAX_RECORD_LENGTH);
  this.chunkBits = Integer.bitCount(chunk.length-1);
  this.lastIndex = (int)(pos >> chunkBits);
  this.cipher = initCipherForBlock(null, lastIndex);
}

代码示例来源：origin: org.apache.poi/poi

private static byte[] getBlockX(byte[] hash, int size, byte fill) {
  if (hash.length == size) return hash;
  
  byte[] result = IOUtils.safelyAllocate(size, MAX_RECORD_LENGTH);
  Arrays.fill(result, fill);
  System.arraycopy(hash, 0, result, 0, Math.min(result.length, hash.length));
  return result;
}

代码示例来源：origin: org.apache.poi/poi

public UnknownSubRecord(LittleEndianInput in, int sid, int size) {
  _sid = sid;
  byte[] buf = IOUtils.safelyAllocate(size, MAX_RECORD_LENGTH);
  in.readFully(buf);
  _data = buf;
}
@Override

代码示例来源：origin: org.apache.poi/poi

@Override
public int fillFields(byte[] data, int offset, EscherRecordFactory recordFactory) {
  int bytesRemaining = readHeader( data, offset );
  // Save the data, ready for the calling code to do something
  //  useful with it
  thedata = IOUtils.safelyAllocate(bytesRemaining, MAX_RECORD_LENGTH);
  System.arraycopy( data, offset + 8, thedata, 0, bytesRemaining );
  return bytesRemaining + 8;
}

代码示例来源：origin: org.apache.poi/poi

@Override
public int fillFields(byte[] data, int offset, EscherRecordFactory recordFactory) {
  int bytesRemaining = readHeader( data, offset );
  int pos            = offset + 8;
  remainingData = IOUtils.safelyAllocate(bytesRemaining, MAX_RECORD_LENGTH);
  System.arraycopy( data, pos, remainingData, 0, bytesRemaining );
  return 8 + bytesRemaining;
}

代码示例来源：origin: org.apache.poi/poi

private static byte[] readRawData(LittleEndianInput in, int size) {
  if (size < 0) {
    throw new IllegalArgumentException("Negative size (" + size + ")");
  }
  if (size == 0) {
    return EMPTY_BYTE_ARRAY;
  }
  byte[] result = IOUtils.safelyAllocate(size, MAX_RECORD_LENGTH);
  in.readFully(result);
  return result;
}

代码示例来源：origin: org.apache.poi/poi

public static String readCompressedUnicode(LittleEndianInput in, int nChars) {
  byte[] buf = IOUtils.safelyAllocate(nChars, MAX_RECORD_LENGTH);
  in.readFully(buf);
  return new String(buf, ISO_8859_1);
}

代码示例来源：origin: org.apache.poi/poi

@Override
public int fillFields(byte[] data, int offset, EscherRecordFactory recordFactory) {
  int bytesAfterHeader = readHeader( data, offset );
  int pos              = offset + HEADER_SIZE;
  field_pictureData = IOUtils.safelyAllocate(bytesAfterHeader, MAX_RECORD_LENGTH);
  System.arraycopy(data, pos, field_pictureData, 0, bytesAfterHeader);
  return bytesAfterHeader + 8;
}

代码示例来源：origin: org.apache.poi/poi

private String readUnicodeString(RLEDecompressingInputStream in, int unicodeNameRecordLength) throws IOException {
  byte[] buffer = IOUtils.safelyAllocate(unicodeNameRecordLength, MAX_STRING_LENGTH);
  int bytesRead = IOUtils.readFully(in, buffer);
  if (bytesRead != unicodeNameRecordLength) {
    throw new EOFException();
  }
  return new String(buffer, StringUtil.UTF16LE);
}

代码示例来源：origin: org.apache.poi/poi

public GroupMarkerSubRecord(LittleEndianInput in, int size) {
  byte[] buf = IOUtils.safelyAllocate(size, MAX_RECORD_LENGTH);
  in.readFully(buf);
  reserved = buf;
}

代码示例来源：origin: org.apache.poi/poi

public static void dump(POIFSFileSystem fs, int startBlock, String name, File parent) throws IOException {
    File file = new File(parent, name);
    try (FileOutputStream out = new FileOutputStream(file)) {
      POIFSStream stream = new POIFSStream(fs, startBlock);

      byte[] b = IOUtils.safelyAllocate(fs.getBigBlockSize(), MAX_RECORD_LENGTH);
      for (ByteBuffer bb : stream) {
        int len = bb.remaining();
        bb.get(b);
        out.write(b, 0, len);
      }
    }
  }
}

代码示例来源：origin: org.apache.poi/poi

public ChunkedCipherOutputStream(DirectoryNode dir, int chunkSize) throws IOException, GeneralSecurityException {
  super(null);
  this.chunkSize = chunkSize;
  int cs = chunkSize == STREAMING ? 4096 : chunkSize;
  this.chunk = IOUtils.safelyAllocate(cs, MAX_RECORD_LENGTH);
  this.plainByteFlags = new BitSet(cs);
  this.chunkBits = Integer.bitCount(cs-1);
  this.fileOut = TempFile.createTempFile("encrypted_package", "crypt");
  this.fileOut.deleteOnExit();
  this.out = new FileOutputStream(fileOut);
  this.dir = dir;
  this.cipher = initCipherForBlock(null, 0, false);
}

代码示例来源：origin: org.apache.poi/poi

public void read( LittleEndianInput lei ) {
    int size = lei.readInt();
    _value = IOUtils.safelyAllocate(size, MAX_RECORD_LENGTH);
    if ( size > 0 ) {
      lei.readFully(_value);
    }
  }
}

代码示例来源：origin: org.apache.poi/poi

public FtCblsSubRecord(LittleEndianInput in, int size) {
  if (size != ENCODED_SIZE) {
    throw new RecordFormatException("Unexpected size (" + size + ")");
  }
  //just grab the raw data
  byte[] buf = IOUtils.safelyAllocate(size, ENCODED_SIZE);
  in.readFully(buf);
  reserved = buf;
}

代码示例来源：origin: org.apache.poi/poi

public byte[] getElement(int index) {
  int actualSize = getActualSizeOfElements(getSizeOfElements());
  byte[] result = IOUtils.safelyAllocate(actualSize, MAX_RECORD_LENGTH);
  System.arraycopy(getComplexData(), FIXED_SIZE + index * actualSize, result, 0, result.length );
  return result;
}

代码示例来源：origin: org.apache.poi/poi

private void setDefaults() {
  futureHeader = new FtrHeader();
  futureHeader.setRecordType(sid);
  
  ext_formatting_length = 0;
  ext_formatting_data = new byte[4];
  
  formula_scale = Formula.create(Ptg.EMPTY_PTG_ARRAY);
  
  ext_opts = 0;
  priority = 0;
  template_type = getConditionType();
  template_param_length = 16;
  template_params = IOUtils.safelyAllocate(template_param_length, MAX_RECORD_LENGTH);
}

代码示例来源：origin: org.apache.poi/poi

public void setNumberOfElementsInMemory(int numberOfElements) {
  int expectedArraySize = numberOfElements * getActualSizeOfElements(getSizeOfElements()) + FIXED_SIZE;
  if (expectedArraySize != getComplexData().length) {
    byte[] newArray = IOUtils.safelyAllocate(expectedArraySize, MAX_RECORD_LENGTH);
    System.arraycopy(getComplexData(), 0, newArray, 0, expectedArraySize);
    setComplexData(newArray);
  }
  LittleEndian.putShort(getComplexData(), 2, (short) numberOfElements);
}

代码示例来源：origin: org.apache.poi/poi

public OldSheetRecord(RecordInputStream in) {
  field_1_position_of_BOF = in.readInt();
  field_2_visibility = in.readUByte();
  field_3_type = in.readUByte();
  int field_4_sheetname_length = in.readUByte();
  field_5_sheetname = IOUtils.safelyAllocate(field_4_sheetname_length, MAX_RECORD_LENGTH);
  in.read(field_5_sheetname, 0, field_4_sheetname_length);
}

代码示例来源：origin: org.apache.poi/poi

public void setNumberOfElementsInArray(int numberOfElements) {
  int expectedArraySize = numberOfElements * getActualSizeOfElements(getSizeOfElements()) + FIXED_SIZE;
  if (expectedArraySize != getComplexData().length) {
    byte[] newArray = IOUtils.safelyAllocate(expectedArraySize, MAX_RECORD_LENGTH);
    System.arraycopy(getComplexData(), 0, newArray, 0, getComplexData().length);
    setComplexData(newArray);
  }
  LittleEndian.putShort(getComplexData(), 0, (short) numberOfElements);
}

代码示例来源：origin: org.apache.poi/poi

public void setSizeOfElements(int sizeOfElements) {
  LittleEndian.putShort( getComplexData(), 4, (short) sizeOfElements );
  int expectedArraySize = getNumberOfElementsInArray() * getActualSizeOfElements(getSizeOfElements()) + FIXED_SIZE;
  if (expectedArraySize != getComplexData().length) {
    // Keep just the first 6 bytes.  The rest is no good to us anyway.
    byte[] newArray = IOUtils.safelyAllocate(expectedArraySize, MAX_RECORD_LENGTH);
    System.arraycopy( getComplexData(), 0, newArray, 0, 6 );
    setComplexData(newArray);
  }
}