Java LittleEndian.readInt方法代码示例

import org.apache.poi.util.LittleEndian; //导入方法依赖的package包/类
public HMEFDumper(InputStream inp) throws IOException {
   this.inp = inp;
   
   // Check the signature matches
   long sig = LittleEndian.readInt(inp);
   if(sig != HMEFMessage.HEADER_SIGNATURE) {
      throw new IllegalArgumentException(
            "TNEF signature not detected in file, " +
            "expected " + HMEFMessage.HEADER_SIGNATURE + 
            " but got " + sig
      );
   }
   
   // Skip over the File ID
   LittleEndian.readUShort(inp);
}
 

import org.apache.poi.util.LittleEndian; //导入方法依赖的package包/类
/**
 * Decompresses the whole of the compressed RTF
 *  stream, outputting the resulting RTF bytes.
 * Note - will decompress any padding at the end of
 *  the input, if present, use {@link #getDeCompressedSize()}
 *  if you need to know how much of the result is
 *  real. (Padding may be up to 7 bytes).
 */
public void decompress(InputStream src, OutputStream res) throws IOException {
   // Validate the header on the front of the RTF
   compressedSize = LittleEndian.readInt(src);
   decompressedSize = LittleEndian.readInt(src);
   int compressionType = LittleEndian.readInt(src);
   int dataCRC = LittleEndian.readInt(src);
   
   // TODO - Handle CRC checking on the output side
   
   // Do we need to do anything?
   if(compressionType == UNCOMPRESSED_SIGNATURE_INT) {
      // Nope, nothing fancy to do
      IOUtils.copy(src, res);
   } else if(compressionType == COMPRESSED_SIGNATURE_INT) {
      // We need to decompress it below
   } else {
      throw new IllegalArgumentException("Invalid compression signature " + compressionType);
   }

   // Have it processed
   super.decompress(src, res);
}
 

import org.apache.poi.util.LittleEndian; //导入方法依赖的package包/类
public HMEFMessage(InputStream inp) throws IOException {
   // Check the signature matches
   long sig = LittleEndian.readInt(inp);
   if(sig != HEADER_SIGNATURE) {
      throw new IllegalArgumentException(
            "TNEF signature not detected in file, " +
            "expected " + HEADER_SIGNATURE + " but got " + sig
      );
   }
   
   // Read the File ID
   fileId = LittleEndian.readUShort(inp);
   
   // Now begin processing the contents
   process(inp, 0);
}
 

import org.apache.poi.util.LittleEndian; //导入方法依赖的package包/类
private static int getLength(MAPIType type, InputStream inp) throws IOException {
   if (type.isFixedLength()) {
      return type.getLength();
   }
   if (type == Types.ASCII_STRING ||
       type == Types.UNICODE_STRING ||
       type == Types.DIRECTORY ||
       type == Types.BINARY) {
         // Need to read the length, as it varies
         return LittleEndian.readInt(inp);
   } else {
         throw new IllegalArgumentException("Unknown type " + type);
   }
}
 

import org.apache.poi.util.LittleEndian; //导入方法依赖的package包/类
/**
 * Constructs a single new attribute from the id, type,
 *  and the contents of the stream
 */
protected TNEFAttribute(int id, int type, InputStream inp) throws IOException {
   this.type = type;
   int length = LittleEndian.readInt(inp);
   
   property = TNEFProperty.getBest(id, type);
   data = new byte[length];
   IOUtils.readFully(inp, data);
   
   checksum = LittleEndian.readUShort(inp);
}