org.apache.commons.compress.archivers.zip.ZipShort类的使用及代码示例

x33g5p2x  于2022-02-05 转载在 其他  
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本文整理了Java中org.apache.commons.compress.archivers.zip.ZipShort类的一些代码示例，展示了ZipShort类的具体用法。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。ZipShort类的具体详情如下：
包路径：org.apache.commons.compress.archivers.zip.ZipShort
类名称：ZipShort

ZipShort介绍

[英]Utility class that represents a two byte integer with conversion rules for the little endian byte order of ZIP files.
[中]一个实用程序类，它表示一个两字节的整数，并带有ZIP文件小端字节顺序的转换规则。

代码示例

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

@Override
public ZipShort getCentralDirectoryLength() {
  return new ZipShort((size != null ? DWORD : 0)
            + (compressedSize != null ? DWORD : 0)
            + (relativeHeaderOffset != null ? DWORD : 0)
            + (diskStart != null ? WORD : 0));
}

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

/**
 * Populate data from this array as if it was in local file data.
 *
 * @param data   an array of bytes
 * @param offset the start offset
 * @param length the number of bytes in the array from offset
 * @throws java.util.zip.ZipException on error
 */
@Override
public void parseFromLocalFileData(
    final byte[] data, int offset, final int length
) throws ZipException {
  final int len = offset + length;
  // skip reserved
  offset += 4;
  while (offset + 4 <= len) {
    final ZipShort tag = new ZipShort(data, offset);
    offset += 2;
    if (tag.equals(TIME_ATTR_TAG)) {
      readTimeAttr(data, offset, len - offset);
      break;
    }
    final ZipShort size = new ZipShort(data, offset);
    offset += 2 + size.getValue();
  }
}

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

/**
 * The actual data to put into local file data - without Header-ID
 * or length specifier.
 *
 * @return get the data
 */
@Override
public byte[] getLocalFileDataData() {
  final byte[] data = new byte[getLocalFileDataLength().getValue()];
  int pos = 4;
  System.arraycopy(TIME_ATTR_TAG.getBytes(), 0, data, pos, 2);
  pos += 2;
  System.arraycopy(TIME_ATTR_SIZE.getBytes(), 0, data, pos, 2);
  pos += 2;
  System.arraycopy(modifyTime.getBytes(), 0, data, pos, 8);
  pos += 8;
  System.arraycopy(accessTime.getBytes(), 0, data, pos, 8);
  pos += 8;
  System.arraycopy(createTime.getBytes(), 0, data, pos, 8);
  return data;
}

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

private void readTimeAttr(final byte[] data, int offset, final int length) {
  if (length >= 2 + 3 * 8) {
    final ZipShort tagValueLength = new ZipShort(data, offset);
    if (TIME_ATTR_SIZE.equals(tagValueLength)) {
      offset += 2;
      modifyTime = new ZipEightByteInteger(data, offset);
      offset += 8;
      accessTime = new ZipEightByteInteger(data, offset);
      offset += 8;
      createTime = new ZipEightByteInteger(data, offset);
    }
  }
}

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

/**
 * Create instance from the two bytes starting at offset.
 * @param bytes the bytes to store as a ZipShort
 * @param offset the offset to start
 */
public ZipShort (final byte[] bytes, final int offset) {
  value = ZipShort.getValue(bytes, offset);
}

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

LOOP:
while (start <= data.length - WORD) {
  final ZipShort headerId = new ZipShort(data, start);
  final int length = new ZipShort(data, start + 2).getValue();
  if (start + WORD + length > data.length) {
    switch(onUnparseableData.getKey()) {
        + Integer.toHexString(headerId.getValue())).initCause(aiobe);

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

/**
 * Get value as two bytes in big endian byte order.
 * @param value the Java int to convert to bytes
 * @return the converted int as a byte array in big endian byte order
 */
public static byte[] getBytes(final int value) {
  final byte[] result = new byte[2];
  putShort(value, result, 0);
  return result;
}

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

@Override
public byte[] getCentralDirectoryData() {
  return ZipShort.getBytes(alignment | (allowMethodChange ? ALLOW_METHOD_MESSAGE_CHANGE_FLAG : 0));
}

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

/**
 * Looks up an extra field by its header id.
 *
 * @param type the header id
 * @return null if no such field exists.
 */
public ZipExtraField getExtraField(final ZipShort type) {
  if (extraFields != null) {
    for (final ZipExtraField extraField : extraFields) {
      if (type.equals(extraField.getHeaderId())) {
        return extraField;
      }
    }
  }
  return null;
}

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

/**
 * Override to make two instances with same value equal.
 * @param o an object to compare
 * @return true if the objects are equal
 */
@Override
public boolean equals(final Object o) {
  if (o == null || !(o instanceof ZipShort)) {
    return false;
  }
  return value == ((ZipShort) o).getValue();
}

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

private void readTimeAttr(final byte[] data, int offset, final int length) {
  if (length >= 2 + 3 * 8) {
    final ZipShort tagValueLength = new ZipShort(data, offset);
    if (TIME_ATTR_SIZE.equals(tagValueLength)) {
      offset += 2;
      modifyTime = new ZipEightByteInteger(data, offset);
      offset += 8;
      accessTime = new ZipEightByteInteger(data, offset);
      offset += 8;
      createTime = new ZipEightByteInteger(data, offset);
    }
  }
}

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

@Override
public byte[] getLocalFileDataData() {
  byte[] content = new byte[BASE_SIZE + padding];
  ZipShort.putShort(alignment | (allowMethodChange ? ALLOW_METHOD_MESSAGE_CHANGE_FLAG : 0),
           content, 0);
  return content;
}

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

final byte[] num = ZipShort.getBytes(Math.min(numberOfEntries,
                    ZIP64_MAGIC_SHORT));
writeCounted(num);
writeCounted(ZipShort.getBytes(dataLen));
streamCompressor.writeCounted(data.array(), data.arrayOffset(), dataLen);

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

/**
 * Remove an extra field.
 * @param type the type of extra field to remove
 */
public void removeExtraField(final ZipShort type) {
  if (extraFields == null) {
    throw new java.util.NoSuchElementException();
  }
  final List<ZipExtraField> newResult = new ArrayList<>();
  for (final ZipExtraField extraField : extraFields) {
    if (!type.equals(extraField.getHeaderId())){
      newResult.add( extraField);
    }
  }
  if (extraFields.length == newResult.size()) {
    throw new java.util.NoSuchElementException();
  }
  extraFields = newResult.toArray(new ZipExtraField[newResult.size()]);
  setExtra();
}

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

/**
 * Length of the complete extra field in the local file data.
 *
 * @return The LocalFileDataLength value
 */
@Override
public ZipShort getLocalFileDataLength() {
  return new ZipShort(localFileData == null ? 0 : localFileData.length);
}

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

/**
 * The actual data to put into local file data - without Header-ID
 * or length specifier.
 * @return get the data
 */
@Override
public byte[] getLocalFileDataData() {
  // CRC will be added later
  final byte[] data = new byte[getLocalFileDataLength().getValue() - WORD];
  System.arraycopy(ZipShort.getBytes(getMode()), 0, data, 0, 2);
  final byte[] linkArray = getLinkedFile().getBytes(); // Uses default charset - see class Javadoc
  // CheckStyle:MagicNumber OFF
  System.arraycopy(ZipLong.getBytes(linkArray.length),
           0, data, 2, WORD);
  System.arraycopy(ZipShort.getBytes(getUserId()),
           0, data, 6, 2);
  System.arraycopy(ZipShort.getBytes(getGroupId()),
           0, data, 8, 2);
  System.arraycopy(linkArray, 0, data, 10, linkArray.length);
  // CheckStyle:MagicNumber ON
  crc.reset();
  crc.update(data);
  final long checksum = crc.getValue();
  final byte[] result = new byte[data.length + WORD];
  System.arraycopy(ZipLong.getBytes(checksum), 0, result, 0, WORD);
  System.arraycopy(data, 0, result, WORD, data.length);
  return result;
}

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

/**
 * Helper method to get the value as a java int from a two-byte array
 * @param bytes the array of bytes
 * @return the corresponding java int value
 */
public static int getValue(final byte[] bytes) {
  return getValue(bytes, 0);
}

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

/**
 * Populate data from this array as if it was in local file data.
 *
 * @param data   an array of bytes
 * @param offset the start offset
 * @param length the number of bytes in the array from offset
 * @throws java.util.zip.ZipException on error
 */
@Override
public void parseFromLocalFileData(
    final byte[] data, int offset, final int length
) throws ZipException {
  final int len = offset + length;
  // skip reserved
  offset += 4;
  while (offset + 4 <= len) {
    final ZipShort tag = new ZipShort(data, offset);
    offset += 2;
    if (tag.equals(TIME_ATTR_TAG)) {
      readTimeAttr(data, offset, len - offset);
      break;
    }
    final ZipShort size = new ZipShort(data, offset);
    offset += 2 + size.getValue();
  }
}

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

/**
 * Encodes the set bits in a form suitable for ZIP archives.
 *
 * @param buf the output buffer
 * @param  offset
 *         The offset within the output buffer of the first byte to be written.
 *         must be non-negative and no larger than <tt>buf.length-2</tt>
 */
public void encode(final byte[] buf, final int offset) {
      ZipShort.putShort((dataDescriptorFlag ? DATA_DESCRIPTOR_FLAG : 0)
          |
          (languageEncodingFlag ? UFT8_NAMES_FLAG : 0)
          |
          (encryptionFlag ? ENCRYPTION_FLAG : 0)
          |
          (strongEncryptionFlag ? STRONG_ENCRYPTION_FLAG : 0)
          , buf, offset);
}

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

writeOut(ZipShort.getBytes(ZIP64_MIN_VERSION));
writeOut(ZipShort.getBytes(ZIP64_MIN_VERSION));

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