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org.apache.commons.compress.archivers.zip.ZipFile.skipBytes()方法的使用及代码示例

转载 作者:知者 更新时间:2024-03-16 20:32:40 25 4
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本文整理了Java中org.apache.commons.compress.archivers.zip.ZipFile.skipBytes()方法的一些代码示例,展示了ZipFile.skipBytes()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。ZipFile.skipBytes()方法的具体详情如下:
包路径:org.apache.commons.compress.archivers.zip.ZipFile
类名称:ZipFile
方法名:skipBytes

ZipFile.skipBytes介绍

[英]Skips the given number of bytes or throws an EOFException if skipping failed.
[中]跳过给定的字节数,如果跳过失败,则抛出EOFEException。

代码示例

代码示例来源:origin: org.apache.commons/commons-compress

/**
 * Parses the "End of central dir record" and positions
 * the stream at the first central directory record.
 *
 * Expects stream to be positioned at the beginning of the
 * "End of central dir record".
 */
private void positionAtCentralDirectory32()
  throws IOException {
  skipBytes(CFD_LOCATOR_OFFSET);
  wordBbuf.rewind();
  IOUtils.readFully(archive, wordBbuf);
  archive.position(ZipLong.getValue(wordBuf));
}

代码示例来源:origin: org.apache.commons/commons-compress

/**
 * Parses the "Zip64 end of central directory locator",
 * finds the "Zip64 end of central directory record" using the
 * parsed information, parses that and positions the stream at the
 * first central directory record.
 *
 * Expects stream to be positioned right behind the "Zip64
 * end of central directory locator"'s signature.
 */
private void positionAtCentralDirectory64()
  throws IOException {
  skipBytes(ZIP64_EOCDL_LOCATOR_OFFSET
       - WORD /* signature has already been read */);
  dwordBbuf.rewind();
  IOUtils.readFully(archive, dwordBbuf);
  archive.position(ZipEightByteInteger.getLongValue(dwordBuf));
  wordBbuf.rewind();
  IOUtils.readFully(archive, wordBbuf);
  if (!Arrays.equals(wordBuf, ZipArchiveOutputStream.ZIP64_EOCD_SIG)) {
    throw new ZipException("archive's ZIP64 end of central "
                + "directory locator is corrupt.");
  }
  skipBytes(ZIP64_EOCD_CFD_LOCATOR_OFFSET
       - WORD /* signature has already been read */);
  dwordBbuf.rewind();
  IOUtils.readFully(archive, dwordBbuf);
  archive.position(ZipEightByteInteger.getLongValue(dwordBuf));
}

代码示例来源:origin: org.apache.commons/commons-compress

wordBbuf.get(shortBuf);
final int extraFieldLen = ZipShort.getValue(shortBuf);
skipBytes(fileNameLen);
final byte[] localExtraData = new byte[extraFieldLen];
IOUtils.readFully(archive, ByteBuffer.wrap(localExtraData));

代码示例来源:origin: org.apache.commons/commons-compress

/**
 * Searches for either the "Zip64 end of central directory
 * locator" or the "End of central dir record", parses
 * it and positions the stream at the first central directory
 * record.
 */
private void positionAtCentralDirectory()
  throws IOException {
  positionAtEndOfCentralDirectoryRecord();
  boolean found = false;
  final boolean searchedForZip64EOCD =
    archive.position() > ZIP64_EOCDL_LENGTH;
  if (searchedForZip64EOCD) {
    archive.position(archive.position() - ZIP64_EOCDL_LENGTH);
    wordBbuf.rewind();
    IOUtils.readFully(archive, wordBbuf);
    found = Arrays.equals(ZipArchiveOutputStream.ZIP64_EOCD_LOC_SIG,
               wordBuf);
  }
  if (!found) {
    // not a ZIP64 archive
    if (searchedForZip64EOCD) {
      skipBytes(ZIP64_EOCDL_LENGTH - WORD);
    }
    positionAtCentralDirectory32();
  } else {
    positionAtCentralDirectory64();
  }
}

代码示例来源:origin: com.impetus.fabric/fabric-jdbc-driver-shaded

/**
 * Parses the "End of central dir record" and positions
 * the stream at the first central directory record.
 *
 * Expects stream to be positioned at the beginning of the
 * "End of central dir record".
 */
private void positionAtCentralDirectory32()
  throws IOException {
  skipBytes(CFD_LOCATOR_OFFSET);
  wordBbuf.rewind();
  IOUtils.readFully(archive, wordBbuf);
  archive.position(ZipLong.getValue(wordBuf));
}

代码示例来源:origin: com.impetus.fabric/fabric-jdbc-driver-shaded

/**
 * Parses the "Zip64 end of central directory locator",
 * finds the "Zip64 end of central directory record" using the
 * parsed information, parses that and positions the stream at the
 * first central directory record.
 *
 * Expects stream to be positioned right behind the "Zip64
 * end of central directory locator"'s signature.
 */
private void positionAtCentralDirectory64()
  throws IOException {
  skipBytes(ZIP64_EOCDL_LOCATOR_OFFSET
       - WORD /* signature has already been read */);
  dwordBbuf.rewind();
  IOUtils.readFully(archive, dwordBbuf);
  archive.position(ZipEightByteInteger.getLongValue(dwordBuf));
  wordBbuf.rewind();
  IOUtils.readFully(archive, wordBbuf);
  if (!Arrays.equals(wordBuf, ZipArchiveOutputStream.ZIP64_EOCD_SIG)) {
    throw new ZipException("archive's ZIP64 end of central "
                + "directory locator is corrupt.");
  }
  skipBytes(ZIP64_EOCD_CFD_LOCATOR_OFFSET
       - WORD /* signature has already been read */);
  dwordBbuf.rewind();
  IOUtils.readFully(archive, dwordBbuf);
  archive.position(ZipEightByteInteger.getLongValue(dwordBuf));
}

代码示例来源:origin: com.impetus.fabric/fabric-jdbc-driver-shaded

wordBbuf.get(shortBuf);
final int extraFieldLen = ZipShort.getValue(shortBuf);
skipBytes(fileNameLen);
final byte[] localExtraData = new byte[extraFieldLen];
IOUtils.readFully(archive, ByteBuffer.wrap(localExtraData));

代码示例来源:origin: com.impetus.fabric/fabric-jdbc-driver-shaded

/**
 * Searches for either the "Zip64 end of central directory
 * locator" or the "End of central dir record", parses
 * it and positions the stream at the first central directory
 * record.
 */
private void positionAtCentralDirectory()
  throws IOException {
  positionAtEndOfCentralDirectoryRecord();
  boolean found = false;
  final boolean searchedForZip64EOCD =
    archive.position() > ZIP64_EOCDL_LENGTH;
  if (searchedForZip64EOCD) {
    archive.position(archive.position() - ZIP64_EOCDL_LENGTH);
    wordBbuf.rewind();
    IOUtils.readFully(archive, wordBbuf);
    found = Arrays.equals(ZipArchiveOutputStream.ZIP64_EOCD_LOC_SIG,
               wordBuf);
  }
  if (!found) {
    // not a ZIP64 archive
    if (searchedForZip64EOCD) {
      skipBytes(ZIP64_EOCDL_LENGTH - WORD);
    }
    positionAtCentralDirectory32();
  } else {
    positionAtCentralDirectory64();
  }
}

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