本文整理汇总了Java中java.nio.channels.SeekableByteChannel.position方法的典型用法代码示例。如果您正苦于以下问题：Java SeekableByteChannel.position方法的具体用法？Java SeekableByteChannel.position怎么用？Java SeekableByteChannel.position使用的例子？那么恭喜您, 这里精选的方法代码示例或许可以为您提供帮助。您也可以进一步了解该方法所在类java.nio.channels.SeekableByteChannel的用法示例。
在下文中一共展示了SeekableByteChannel.position方法的5个代码示例，这些例子默认根据受欢迎程度排序。您可以为喜欢或者感觉有用的代码点赞，您的评价将有助于系统推荐出更棒的Java代码示例。
示例1: LineReader
import java.nio.channels.SeekableByteChannel; //导入方法依赖的package包/类
public LineReader(final ReadableByteChannel channel)
throws IOException {
buf = ByteBuffer.allocate(BUF_SIZE);
buf.flip();
boolean removeLine = false;
// If we are not at the beginning of a line, we should ignore the current line.
if (channel instanceof SeekableByteChannel) {
SeekableByteChannel seekChannel = (SeekableByteChannel) channel;
if (seekChannel.position() > 0) {
// Start from one character back and read till we find a new line.
seekChannel.position(seekChannel.position() - 1);
removeLine = true;
}
nextLineStart = seekChannel.position();
}
this.channel = channel;
if (removeLine) {
nextLineStart += readNextLine(new ByteArrayOutputStream());
}
}
示例2: xorFiles
import java.nio.channels.SeekableByteChannel; //导入方法依赖的package包/类
public static void xorFiles(SeekableByteChannel inputA, SeekableByteChannel inputB,
SeekableByteChannel outputChannel, long limit) throws IOException {
ByteBuffer aBuffer = ByteBuffer.allocateDirect(BUFFER_SIZE);
ByteBuffer bBuffer = ByteBuffer.allocateDirect(BUFFER_SIZE);
ByteBuffer outBuffer = ByteBuffer.allocateDirect(BUFFER_SIZE);
do {
if (inputA.position() == inputA.size()) inputA.position(0);
if (inputB.position() == inputB.size()) inputB.position(0);
inputA.read(aBuffer);
inputB.read(bBuffer);
aBuffer.flip();
bBuffer.flip();
int cap = min(aBuffer.remaining(), bBuffer.remaining(), outBuffer.remaining());
for (int i = 0; i < cap; i += 8) {
long a = aBuffer.getLong();
long b = bBuffer.getLong();
outBuffer.putLong(a ^ b);
}
aBuffer.compact();
bBuffer.compact();
outBuffer.flip();
long bytesRequired = limit - outputChannel.size();
if (outBuffer.limit() > bytesRequired) outBuffer.limit((int) bytesRequired);
outputChannel.write(outBuffer);
outBuffer.compact();
} while (outputChannel.size() < limit);
}
示例3: openStream
import java.nio.channels.SeekableByteChannel; //导入方法依赖的package包/类
@Override
public InputStream openStream() throws IOException {
parseDatHeader();
SeekableByteChannel channel = Files.newByteChannel(datFile);
channel.position(Math.abs(position) + headerLen);
return new CountingStream(Channels.newInputStream(channel), dataLen);
}
示例4: main
import java.nio.channels.SeekableByteChannel; //导入方法依赖的package包/类
public static void main(String[] args) throws Exception {
AuthTimeWithHash a1 = new AuthTimeWithHash(client, server, time(0), 0,
"1111111111111111");
AuthTimeWithHash a2 = new AuthTimeWithHash(client, server, time(0), 0,
"2222222222222222");
KerberosTime now = new KerberosTime(time(0)*1000L);
// When all new styles, must exact match
ReplayCache cache = ReplayCache.getInstance("dfl:./c1");
cache.checkAndStore(now, a1);
cache.checkAndStore(now, a2);
// When only old style in cache, partial match
cache = ReplayCache.getInstance("dfl:./c2");
cache.checkAndStore(now, a1);
// A small surgery to remove the new style from the cache file
SeekableByteChannel ch = Files.newByteChannel(Paths.get("c2"),
StandardOpenOption.WRITE,
StandardOpenOption.READ);
ch.position(6);
ch.write(ByteBuffer.wrap(a1.encode(false)));
ch.truncate(ch.position());
ch.close();
try {
cache.checkAndStore(now, a2);
throw new Exception();
} catch (KrbException ke) {
// Correct
System.out.println(ke);
}
}
示例5: main
import java.nio.channels.SeekableByteChannel; //导入方法依赖的package包/类
public static void main(String[] args) throws Exception {
AuthTimeWithHash a1 = new AuthTimeWithHash(client, server, time(0), 0,
"HASH", "1111111111111111");
AuthTimeWithHash a2 = new AuthTimeWithHash(client, server, time(0), 0,
"HASH", "2222222222222222");
KerberosTime now = new KerberosTime(time(0)*1000L);
// When all new styles, must exact match
ReplayCache cache = ReplayCache.getInstance("dfl:./c1");
cache.checkAndStore(now, a1);
cache.checkAndStore(now, a2);
// When only old style in cache, partial match
cache = ReplayCache.getInstance("dfl:./c2");
cache.checkAndStore(now, a1);
// A small surgery to remove the new style from the cache file
SeekableByteChannel ch = Files.newByteChannel(Paths.get("c2"),
StandardOpenOption.WRITE,
StandardOpenOption.READ);
ch.position(6);
ch.write(ByteBuffer.wrap(a1.encode(false)));
ch.truncate(ch.position());
ch.close();
try {
cache.checkAndStore(now, a2);
throw new Exception();
} catch (KrbException ke) {
// Correct
System.out.println(ke);
}
}