13 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
14 * version 2 for more details (a copy is included in the LICENSE file that
15 * accompanied this code).
16 *
17 * You should have received a copy of the GNU General Public License version
18 * 2 along with this work; if not, write to the Free Software Foundation,
19 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
20 *
21 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
22 * or visit www.oracle.com if you need additional information or have any
23 * questions.
24 */
25
26 package java.util.zip;
27
28 import java.io.InputStream;
29 import java.io.IOException;
30 import java.io.EOFException;
31 import java.io.PushbackInputStream;
32 import java.nio.charset.Charset;
33 import java.nio.charset.StandardCharsets;
34 import static java.util.zip.ZipConstants64.*;
35 import static java.util.zip.ZipUtils.*;
36
37 /**
38 * This class implements an input stream filter for reading files in the
39 * ZIP file format. Includes support for both compressed and uncompressed
40 * entries.
41 *
42 * @author David Connelly
43 * @since 1.1
44 */
45 public
46 class ZipInputStream extends InflaterInputStream implements ZipConstants {
47 private ZipEntry entry;
48 private int flag;
49 private CRC32 crc = new CRC32();
50 private long remaining;
51 private byte[] tmpbuf = new byte[512];
52
53 private static final int STORED = ZipEntry.STORED;
54 private static final int DEFLATED = ZipEntry.DEFLATED;
55
56 private boolean closed = false;
61 private ZipCoder zc;
62
63 /**
64 * Check to make sure that this stream has not been closed
65 */
66 private void ensureOpen() throws IOException {
67 if (closed) {
68 throw new IOException("Stream closed");
69 }
70 }
71
72 /**
73 * Creates a new ZIP input stream.
74 *
75 * <p>The UTF-8 {@link java.nio.charset.Charset charset} is used to
76 * decode the entry names.
77 *
78 * @param in the actual input stream
79 */
80 public ZipInputStream(InputStream in) {
81 this(in, StandardCharsets.UTF_8);
82 }
83
84 /**
85 * Creates a new ZIP input stream.
86 *
87 * @param in the actual input stream
88 *
89 * @param charset
90 * The {@linkplain java.nio.charset.Charset charset} to be
91 * used to decode the ZIP entry name (ignored if the
92 * <a href="package-summary.html#lang_encoding"> language
93 * encoding bit</a> of the ZIP entry's general purpose bit
94 * flag is set).
95 *
96 * @since 1.7
97 */
98 public ZipInputStream(InputStream in, Charset charset) {
99 super(new PushbackInputStream(in, 512), new Inflater(true), 512);
100 usesDefaultInflater = true;
101 if(in == null) {
|
13 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
14 * version 2 for more details (a copy is included in the LICENSE file that
15 * accompanied this code).
16 *
17 * You should have received a copy of the GNU General Public License version
18 * 2 along with this work; if not, write to the Free Software Foundation,
19 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
20 *
21 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
22 * or visit www.oracle.com if you need additional information or have any
23 * questions.
24 */
25
26 package java.util.zip;
27
28 import java.io.InputStream;
29 import java.io.IOException;
30 import java.io.EOFException;
31 import java.io.PushbackInputStream;
32 import java.nio.charset.Charset;
33 import static java.util.zip.ZipConstants64.*;
34 import static java.util.zip.ZipUtils.*;
35
36 import sun.nio.cs.UTF_8;
37
38 /**
39 * This class implements an input stream filter for reading files in the
40 * ZIP file format. Includes support for both compressed and uncompressed
41 * entries.
42 *
43 * @author David Connelly
44 * @since 1.1
45 */
46 public
47 class ZipInputStream extends InflaterInputStream implements ZipConstants {
48 private ZipEntry entry;
49 private int flag;
50 private CRC32 crc = new CRC32();
51 private long remaining;
52 private byte[] tmpbuf = new byte[512];
53
54 private static final int STORED = ZipEntry.STORED;
55 private static final int DEFLATED = ZipEntry.DEFLATED;
56
57 private boolean closed = false;
62 private ZipCoder zc;
63
64 /**
65 * Check to make sure that this stream has not been closed
66 */
67 private void ensureOpen() throws IOException {
68 if (closed) {
69 throw new IOException("Stream closed");
70 }
71 }
72
73 /**
74 * Creates a new ZIP input stream.
75 *
76 * <p>The UTF-8 {@link java.nio.charset.Charset charset} is used to
77 * decode the entry names.
78 *
79 * @param in the actual input stream
80 */
81 public ZipInputStream(InputStream in) {
82 this(in, UTF_8.INSTANCE);
83 }
84
85 /**
86 * Creates a new ZIP input stream.
87 *
88 * @param in the actual input stream
89 *
90 * @param charset
91 * The {@linkplain java.nio.charset.Charset charset} to be
92 * used to decode the ZIP entry name (ignored if the
93 * <a href="package-summary.html#lang_encoding"> language
94 * encoding bit</a> of the ZIP entry's general purpose bit
95 * flag is set).
96 *
97 * @since 1.7
98 */
99 public ZipInputStream(InputStream in, Charset charset) {
100 super(new PushbackInputStream(in, 512), new Inflater(true), 512);
101 usesDefaultInflater = true;
102 if(in == null) {
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