Java RandomAccessData.getSubsection方法代码示例

import org.springframework.boot.loader.data.RandomAccessData; //导入方法依赖的package包/类
private RandomAccessData getArchiveData(CentralDirectoryEndRecord endRecord,
		RandomAccessData data) {
	long offset = endRecord.getStartOfArchive(data);
	if (offset == 0) {
		return data;
	}
	return data.getSubsection(offset, data.getSize() - offset);
}
 

import org.springframework.boot.loader.data.RandomAccessData; //导入方法依赖的package包/类
private RandomAccessData getEntryData(FileHeader entry) throws IOException {
	// aspectjrt-1.7.4.jar has a different ext bytes length in the
	// local directory to the central directory. We need to re-read
	// here to skip them
	RandomAccessData data = this.jarFile.getData();
	byte[] localHeader = Bytes.get(
			data.getSubsection(entry.getLocalHeaderOffset(), LOCAL_FILE_HEADER_SIZE));
	long nameLength = Bytes.littleEndianValue(localHeader, 26, 2);
	long extraLength = Bytes.littleEndianValue(localHeader, 28, 2);
	return data.getSubsection(entry.getLocalHeaderOffset() + LOCAL_FILE_HEADER_SIZE
			+ nameLength + extraLength, entry.getCompressedSize());
}
 

import org.springframework.boot.loader.data.RandomAccessData; //导入方法依赖的package包/类
/**
 * Return the bytes of the "Central directory" based on the offset indicated in this
 * record.
 * @param data the source data
 * @return the central directory data
 */
public RandomAccessData getCentralDirectory(RandomAccessData data) {
	long offset = Bytes.littleEndianValue(this.block, this.offset + 16, 4);
	long length = Bytes.littleEndianValue(this.block, this.offset + 12, 4);
	return data.getSubsection(offset, length);
}