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ZipEntryReader.javaAPI DocAndroid 5.1 API4452Thu Mar 12 22:22:48 GMT 2015android.support.multidex

ZipEntryReader

public class ZipEntryReader extends Object

Fields Summary
static final Charset
UTF_8
private static final int
GPBF_ENCRYPTED_FLAG
General Purpose Bit Flags, Bit 0. If set, indicates that the file is encrypted.
private static final int
GPBF_UNSUPPORTED_MASK
Supported General Purpose Bit Flags Mask. Bit mask of bits not supported. Note: The only bit that we will enforce at this time is the encrypted bit. Although other bits are not supported, we must not enforce them as this could break some legitimate use cases (See http://b/8617715).
private static final long
CENSIG
Constructors Summary
Methods Summary
private static longgetTime(int time, int modDate)

        GregorianCalendar cal = new GregorianCalendar();
        cal.set(Calendar.MILLISECOND, 0);
        cal.set(1980 + ((modDate >> 9) & 0x7f), ((modDate >> 5) & 0xf) - 1,
                modDate & 0x1f, (time >> 11) & 0x1f, (time >> 5) & 0x3f,
                (time & 0x1f) << 1);
        return cal.getTime().getTime();
static java.util.zip.ZipEntryreadEntry(java.nio.ByteBuffer in)


          

        int sig = in.getInt();
        if (sig != CENSIG) {
             throw new ZipException("Central Directory Entry not found");
        }

        in.position(8);
        int gpbf = in.getShort() & 0xffff;

        if ((gpbf & GPBF_UNSUPPORTED_MASK) != 0) {
            throw new ZipException("Invalid General Purpose Bit Flag: " + gpbf);
        }

        int compressionMethod = in.getShort() & 0xffff;
        int time = in.getShort() & 0xffff;
        int modDate = in.getShort() & 0xffff;

        // These are 32-bit values in the file, but 64-bit fields in this object.
        long crc = ((long) in.getInt()) & 0xffffffffL;
        long compressedSize = ((long) in.getInt()) & 0xffffffffL;
        long size = ((long) in.getInt()) & 0xffffffffL;

        int nameLength = in.getShort() & 0xffff;
        int extraLength = in.getShort() & 0xffff;
        int commentByteCount = in.getShort() & 0xffff;

        // This is a 32-bit value in the file, but a 64-bit field in this object.
        in.position(42);
        long localHeaderRelOffset = ((long) in.getInt()) & 0xffffffffL;

        byte[] nameBytes = new byte[nameLength];
        in.get(nameBytes, 0, nameBytes.length);
        String name = new String(nameBytes, 0, nameBytes.length, UTF_8);

        ZipEntry entry = new ZipEntry(name);
        entry.setMethod(compressionMethod);
        entry.setTime(getTime(time, modDate));

        entry.setCrc(crc);
        entry.setCompressedSize(compressedSize);
        entry.setSize(size);

        // The RI has always assumed UTF-8. (If GPBF_UTF8_FLAG isn't set, the encoding is
        // actually IBM-437.)
        if (commentByteCount > 0) {
            byte[] commentBytes = new byte[commentByteCount];
            in.get(commentBytes, 0, commentByteCount);
            entry.setComment(new String(commentBytes, 0, commentBytes.length, UTF_8));
        }

        if (extraLength > 0) {
            byte[] extra = new byte[extraLength];
            in.get(extra, 0, extraLength);
            entry.setExtra(extra);
        }

        return entry;