public class ZipInputStream extends InflaterInputStream
This class implements an input stream filter for reading files in the ZIP file format. Includes support for both compressed and uncompressed entries.
public static final long LOCSIG
public static final long EXTSIG
public static final long CENSIG
public static final long ENDSIG
public static final int LOCHDR
public static final int EXTHDR
public static final int CENHDR
public static final int ENDHDR
public static final int LOCVER
public static final int LOCFLG
public static final int LOCHOW
public static final int LOCTIM
public static final int LOCCRC
public static final int LOCSIZ
public static final int LOCLEN
public static final int LOCNAM
public static final int LOCEXT
public static final int EXTCRC
public static final int EXTSIZ
public static final int EXTLEN
public static final int CENVEM
public static final int CENVER
public static final int CENFLG
public static final int CENHOW
public static final int CENTIM
public static final int CENCRC
public static final int CENSIZ
public static final int CENLEN
public static final int CENNAM
public static final int CENEXT
public static final int CENCOM
public static final int CENDSK
public static final int CENATT
public static final int CENATX
public static final int CENOFF
public static final int ENDSUB
public static final int ENDTOT
public static final int ENDSIZ
public static final int ENDOFF
public static final int ENDCOM
public ZipInputStream(InputStream in)
Creates a new ZIP input stream.
The UTF-8 charset
is used to decode the entry names.
in
- the actual input streampublic ZipInputStream(InputStream in, Charset charset)
Creates a new ZIP input stream.
in
- the actual input streamcharset
- The charset to be used to decode the ZIP entry name (ignored if the language encoding bit of the ZIP entry's general purpose bit flag is set).public ZipEntry getNextEntry() throws IOException
Reads the next ZIP file entry and positions the stream at the beginning of the entry data.
ZipException
- if a ZIP file error has occurredIOException
- if an I/O error has occurredpublic void closeEntry() throws IOException
Closes the current ZIP entry and positions the stream for reading the next entry.
ZipException
- if a ZIP file error has occurredIOException
- if an I/O error has occurredpublic int available() throws IOException
Returns 0 after EOF has reached for the current entry data, otherwise always return 1.
Programs should not count on this method to return the actual number of bytes that could be read without blocking.
available
in class InflaterInputStream
IOException
- if an I/O error occurs.public int read(byte[] b, int off, int len) throws IOException
Reads from the current ZIP entry into an array of bytes. If len
is not zero, the method blocks until some input is available; otherwise, no bytes are read and 0
is returned.
read
in class InflaterInputStream
b
- the buffer into which the data is readoff
- the start offset in the destination array b
len
- the maximum number of bytes readNullPointerException
- if b
is null
.IndexOutOfBoundsException
- if off
is negative, len
is negative, or len
is greater than b.length - off
ZipException
- if a ZIP file error has occurredIOException
- if an I/O error has occurredFilterInputStream.in
public long skip(long n) throws IOException
Skips specified number of bytes in the current ZIP entry.
skip
in class InflaterInputStream
n
- the number of bytes to skipZipException
- if a ZIP file error has occurredIOException
- if an I/O error has occurredIllegalArgumentException
- if n < 0
public void close() throws IOException
Closes this input stream and releases any system resources associated with the stream.
close
in interface Closeable
close
in interface AutoCloseable
close
in class InflaterInputStream
IOException
- if an I/O error has occurredFilterInputStream.in
protected ZipEntry createZipEntry(String name)
Creates a new ZipEntry
object for the specified entry name.
name
- the ZIP file entry name
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Documentation extracted from Debian's OpenJDK Development Kit package.
Licensed under the GNU General Public License, version 2, with the Classpath Exception.
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