ucar.unidata.io.RandomAccessFile.readLong()方法的使用及代码示例

x33g5p2x  于2022-01-29 转载在 其他  
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本文整理了Java中ucar.unidata.io.RandomAccessFile.readLong方法的一些代码示例，展示了RandomAccessFile.readLong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。RandomAccessFile.readLong方法的具体详情如下：
包路径：ucar.unidata.io.RandomAccessFile
类名称：RandomAccessFile
方法名：readLong

RandomAccessFile.readLong介绍

[英]Reads a signed 64-bit integer from this file. This method reads eight bytes from the file. If the bytes read, in order, are b1, b2, b3, b4, b5, b6, b7, and b8, where:

0 <= b1, b2, b3, b4, b5, b6, b7, b8 <=255,

then the result is equal to:

((long)b1 << 56) + ((long)b2 << 48) 
+ ((long)b3 << 40) + ((long)b4 << 32) 
+ ((long)b5 << 24) + ((long)b6 << 16) 
+ ((long)b7 << 8) + b8

This method blocks until the eight bytes are read, the end of the stream is detected, or an exception is thrown.
[中]从该文件中读取带符号的64位整数。此方法从文件中读取八个字节。如果按顺序读取的字节为b1、b2、b3、b4、b5、b6、b7和b8,，其中：
0 <= b1, b2, b3, b4, b5, b6, b7, b8 <=255,
那么结果等于：

((long)b1 << 56) + ((long)b2 << 48) 
+ ((long)b3 << 40) + ((long)b4 << 32) 
+ ((long)b5 << 24) + ((long)b6 << 16) 
+ ((long)b7 << 8) + b8

此方法会一直阻塞，直到读取了八个字节、检测到流结束或引发异常为止。

代码示例

代码示例来源：origin: edu.ucar/netcdf

/**
 * Read an array of longs
 *
 * @param pa    read into this array
 * @param start starting at pa[start]
 * @param n     read this many elements
 * @throws IOException on read error
 */
public final void readLong(long[] pa, int start, int n) throws IOException {
 for (int i = 0; i < n; i++) {
  pa[start + i] = readLong();
 }
}

代码示例来源：origin: edu.ucar/cdm

/**
 * Read an array of longs
 *
 * @param pa    read into this array
 * @param start starting at pa[start]
 * @param n     read this many elements
 * @throws IOException on read error
 */
public final void readLong(long[] pa, int start, int n) throws IOException {
 for (int i = 0; i < n; i++) {
  pa[start + i] = readLong();
 }
}

代码示例来源：origin: Unidata/thredds

/**
 * Read an array of longs
 *
 * @param pa    read into this array
 * @param start starting at pa[start]
 * @param n     read this many elements
 * @throws IOException on read error
 */
public final void readLong(long[] pa, int start, int n) throws IOException {
 for (int i = 0; i < n; i++) {
  pa[start + i] = readLong();
 }
}

代码示例来源：origin: edu.ucar/unidataCommon

/**
 * Read an array of longs
 *
 * @param pa    read into this array
 * @param start starting at pa[start]
 * @param n     read this many elements
 * @throws IOException on read error
 */
public final void readLong(long[] pa, int start, int n) throws IOException {
 for (int i = 0; i < n; i++) {
  pa[start + i] = readLong();
 }
}

代码示例来源：origin: edu.ucar/cdm

/**
 * Read an array of doubles
 *
 * @param pa    read into this array
 * @param start starting at pa[start]
 * @param n     read this many elements
 * @throws IOException on read error
 */
public final void readDouble(double[] pa, int start, int n) throws IOException {
 for (int i = 0; i < n; i++) {
  pa[start + i] = Double.longBitsToDouble(readLong());
 }
}

代码示例来源：origin: Unidata/thredds

/**
 * Read an array of doubles
 *
 * @param pa    read into this array
 * @param start starting at pa[start]
 * @param n     read this many elements
 * @throws IOException on read error
 */
public final void readDouble(double[] pa, int start, int n) throws IOException {
 for (int i = 0; i < n; i++) {
  pa[start + i] = Double.longBitsToDouble(readLong());
 }
}

代码示例来源：origin: edu.ucar/unidataCommon

/**
 * Read an array of doubles
 *
 * @param pa    read into this array
 * @param start starting at pa[start]
 * @param n     read this many elements
 * @throws IOException on read error
 */
public final void readDouble(double[] pa, int start, int n) throws IOException {
 for (int i = 0; i < n; i++) {
   pa[start + i] = Double.longBitsToDouble(readLong());
 }
}

代码示例来源：origin: edu.ucar/netcdf

/**
 * Read an array of doubles
 *
 * @param pa    read into this array
 * @param start starting at pa[start]
 * @param n     read this many elements
 * @throws IOException on read error
 */
public final void readDouble(double[] pa, int start, int n) throws IOException {
 for (int i = 0; i < n; i++) {
  pa[start + i] = Double.longBitsToDouble(readLong());
 }
}

代码示例来源：origin: edu.ucar/netcdf

long readLength() throws IOException {
 return isLengthLong ? raf.readLong() : (long) raf.readInt();
}

代码示例来源：origin: edu.ucar/cdm

long readLength() throws IOException {
 return isLengthLong ? raf.readLong() : (long) raf.readInt();
}

代码示例来源：origin: edu.ucar/cdm

long readOffset() throws IOException {
 return isOffsetLong ? raf.readLong() : (long) raf.readInt();
}

代码示例来源：origin: Unidata/thredds

long readLength() throws IOException {
 return isLengthLong ? raf.readLong() : (long) raf.readInt();
}

代码示例来源：origin: Unidata/thredds

Record6() throws IOException {
  creationOrder = raf.readLong();
  raf.readFully(heapId);
  if (debugBtree2)
   debugOut.println("  record6 creationOrder=" + creationOrder + " heapId=" + Misc.showBytes(heapId));
 }
}

代码示例来源：origin: edu.ucar/netcdf

Record6() throws IOException {
  creationOrder = raf.readLong();
  raf.read(heapId);
  if (debugBtree2)
   debugOut.println("  record6 creationOrder=" + creationOrder + " heapId=" + Misc.showBytes(heapId));
 }
}

代码示例来源：origin: edu.ucar/cdm

Record6() throws IOException {
  creationOrder = raf.readLong();
  raf.readFully(heapId);
  if (debugBtree2)
   debugOut.println("  record6 creationOrder=" + creationOrder + " heapId=" + Misc.showBytes(heapId));
 }
}

代码示例来源：origin: edu.ucar/cdm

void read() throws IOException {
 if (debugPos) debugOut.println("   *MessageGroupNew start pos= " + raf.getFilePointer());
 byte version = raf.readByte();
 byte flags = raf.readByte();
 if ((flags & 1) != 0) {
  maxCreationIndex = raf.readLong();
 }
 fractalHeapAddress = readOffset();
 v2BtreeAddress = readOffset(); // aka name index
 if ((flags & 2) != 0) {
  v2BtreeAddressCreationOrder = readOffset();
 }
 if (debug1) debugOut.println("   MessageGroupNew version= " + version + " flags = " + flags + this);
}

代码示例来源：origin: edu.ucar/netcdf

void read() throws IOException {
 if (debugPos) debugOut.println("   *MessageGroupNew start pos= " + raf.getFilePointer());
 byte version = raf.readByte();
 byte flags = raf.readByte();
 if ((flags & 1) != 0) {
  maxCreationIndex = raf.readLong();
 }
 fractalHeapAddress = readOffset();
 v2BtreeAddress = readOffset(); // aka name index
 if ((flags & 2) != 0) {
  v2BtreeAddressCreationOrder = readOffset();
 }
 if (debug1) debugOut.println("   MessageGroupNew version= " + version + " flags = " + flags + this);
}

代码示例来源：origin: Unidata/thredds

DataChunk(int ndim, boolean last) throws IOException {
 this.size = h5.raf.readInt();
 this.filterMask = h5.raf.readInt();
 offset = new int[ndim];
 for (int i = 0; i < ndim; i++) {
  long loffset = h5.raf.readLong();
  assert loffset < Integer.MAX_VALUE;
  offset[i] = (int) loffset;
 }
 this.filePos = last ? -1 : h5.readAddress(); //
 if (memTracker != null) memTracker.addByLen("Chunked Data (" + owner + ")", filePos, size);
}

代码示例来源：origin: edu.ucar/netcdf

DataChunk(int ndim, boolean last) throws IOException {
 this.size = raf.readInt();
 this.filterMask = raf.readInt();
 offset = new int[ndim];
 for (int i = 0; i < ndim; i++) {
  long loffset = raf.readLong();
  assert loffset < Integer.MAX_VALUE;
  offset[i] = (int) loffset;
 }
 this.filePos = last ? -1 : h5.readAddress(); //
 if (memTracker != null) memTracker.addByLen("Chunked Data (" + owner + ")", filePos, size);
}

代码示例来源：origin: edu.ucar/cdm

DataChunk(int ndim, boolean last) throws IOException {
 this.size = raf.readInt();
 this.filterMask = raf.readInt();
 offset = new int[ndim];
 for (int i = 0; i < ndim; i++) {
  long loffset = raf.readLong();
  assert loffset < Integer.MAX_VALUE;
  offset[i] = (int) loffset;
 }
 this.filePos = last ? -1 : h5.readAddress(); //
 if (memTracker != null) memTracker.addByLen("Chunked Data (" + owner + ")", filePos, size);
}

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