author | amenkov |
Mon, 28 Feb 2011 18:36:33 +0300 | |
changeset 8525 | 08f98f5a11df |
parent 5506 | 202f599c92aa |
child 18215 | b2afd66ce6db |
permissions | -rw-r--r-- |
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/* |
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* Copyright (c) 2007, Oracle and/or its affiliates. All rights reserved. |
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* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. |
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* |
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* This code is free software; you can redistribute it and/or modify it |
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* under the terms of the GNU General Public License version 2 only, as |
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* published by the Free Software Foundation. Oracle designates this |
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* particular file as subject to the "Classpath" exception as provided |
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* by Oracle in the LICENSE file that accompanied this code. |
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* |
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* This code is distributed in the hope that it will be useful, but WITHOUT |
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* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or |
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* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License |
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* version 2 for more details (a copy is included in the LICENSE file that |
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* accompanied this code). |
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* |
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* You should have received a copy of the GNU General Public License version |
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* 2 along with this work; if not, write to the Free Software Foundation, |
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* Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. |
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* |
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* Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA |
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* or visit www.oracle.com if you need additional information or have any |
|
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* questions. |
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*/ |
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package com.sun.media.sound; |
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|
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import java.io.EOFException; |
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import java.io.IOException; |
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import java.io.InputStream; |
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/** |
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* Resource Interchange File Format (RIFF) stream decoder. |
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* |
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* @author Karl Helgason |
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*/ |
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public class RIFFReader extends InputStream { |
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private RIFFReader root; |
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private long filepointer = 0; |
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private String fourcc; |
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private String riff_type = null; |
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private long ckSize = 0; |
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private InputStream stream; |
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private long avail; |
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private RIFFReader lastiterator = null; |
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public RIFFReader(InputStream stream) throws IOException { |
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if (stream instanceof RIFFReader) |
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root = ((RIFFReader)stream).root; |
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else |
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root = this; |
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this.stream = stream; |
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avail = Integer.MAX_VALUE; |
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ckSize = Integer.MAX_VALUE; |
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// Check for RIFF null paddings, |
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int b; |
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while (true) { |
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b = read(); |
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if (b == -1) { |
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fourcc = ""; // don't put null value into fourcc, |
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// because it is expected to |
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// always contain a string value |
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riff_type = null; |
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avail = 0; |
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return; |
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} |
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if (b != 0) |
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break; |
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} |
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byte[] fourcc = new byte[4]; |
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fourcc[0] = (byte) b; |
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readFully(fourcc, 1, 3); |
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this.fourcc = new String(fourcc, "ascii"); |
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ckSize = readUnsignedInt(); |
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avail = this.ckSize; |
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if (getFormat().equals("RIFF") || getFormat().equals("LIST")) { |
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byte[] format = new byte[4]; |
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readFully(format); |
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this.riff_type = new String(format, "ascii"); |
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} |
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} |
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public long getFilePointer() throws IOException { |
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return root.filepointer; |
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} |
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public boolean hasNextChunk() throws IOException { |
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if (lastiterator != null) |
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lastiterator.finish(); |
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return avail != 0; |
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} |
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public RIFFReader nextChunk() throws IOException { |
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if (lastiterator != null) |
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lastiterator.finish(); |
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if (avail == 0) |
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return null; |
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lastiterator = new RIFFReader(this); |
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return lastiterator; |
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} |
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public String getFormat() { |
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return fourcc; |
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} |
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public String getType() { |
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return riff_type; |
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} |
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public long getSize() { |
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return ckSize; |
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} |
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public int read() throws IOException { |
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if (avail == 0) |
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return -1; |
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int b = stream.read(); |
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if (b == -1) |
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return -1; |
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avail--; |
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filepointer++; |
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return b; |
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} |
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public int read(byte[] b, int offset, int len) throws IOException { |
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if (avail == 0) |
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return -1; |
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if (len > avail) { |
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int rlen = stream.read(b, offset, (int)avail); |
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if (rlen != -1) |
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137 |
filepointer += rlen; |
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|
138 |
avail = 0; |
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|
139 |
return rlen; |
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|
140 |
} else { |
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141 |
int ret = stream.read(b, offset, len); |
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|
142 |
if (ret == -1) |
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|
143 |
return -1; |
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|
144 |
avail -= ret; |
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|
145 |
filepointer += ret; |
4a53d636e2f4
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|
146 |
return ret; |
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|
147 |
} |
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|
148 |
} |
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|
149 |
|
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150 |
public final void readFully(byte b[]) throws IOException { |
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151 |
readFully(b, 0, b.length); |
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|
152 |
} |
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|
153 |
|
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|
154 |
public final void readFully(byte b[], int off, int len) throws IOException { |
4a53d636e2f4
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|
155 |
if (len < 0) |
4a53d636e2f4
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|
156 |
throw new IndexOutOfBoundsException(); |
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amenkov
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|
157 |
while (len > 0) { |
4a53d636e2f4
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|
158 |
int s = read(b, off, len); |
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|
159 |
if (s < 0) |
4a53d636e2f4
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|
160 |
throw new EOFException(); |
4a53d636e2f4
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amenkov
parents:
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|
161 |
if (s == 0) |
4a53d636e2f4
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amenkov
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|
162 |
Thread.yield(); |
4a53d636e2f4
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|
163 |
off += s; |
4a53d636e2f4
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|
164 |
len -= s; |
4a53d636e2f4
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amenkov
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diff
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|
165 |
} |
4a53d636e2f4
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amenkov
parents:
diff
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|
166 |
} |
4a53d636e2f4
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amenkov
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|
167 |
|
4a53d636e2f4
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|
168 |
public final long skipBytes(long n) throws IOException { |
4a53d636e2f4
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|
169 |
if (n < 0) |
4a53d636e2f4
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|
170 |
return 0; |
4a53d636e2f4
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diff
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|
171 |
long skipped = 0; |
4a53d636e2f4
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amenkov
parents:
diff
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|
172 |
while (skipped != n) { |
4a53d636e2f4
6702956: OpenJDK: replace encumbered code (software synthesizer)
amenkov
parents:
diff
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|
173 |
long s = skip(n - skipped); |
4a53d636e2f4
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amenkov
parents:
diff
changeset
|
174 |
if (s < 0) |
4a53d636e2f4
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amenkov
parents:
diff
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|
175 |
break; |
4a53d636e2f4
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amenkov
parents:
diff
changeset
|
176 |
if (s == 0) |
4a53d636e2f4
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|
177 |
Thread.yield(); |
4a53d636e2f4
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amenkov
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|
178 |
skipped += s; |
4a53d636e2f4
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amenkov
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diff
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|
179 |
} |
4a53d636e2f4
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|
180 |
return skipped; |
4a53d636e2f4
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amenkov
parents:
diff
changeset
|
181 |
} |
4a53d636e2f4
6702956: OpenJDK: replace encumbered code (software synthesizer)
amenkov
parents:
diff
changeset
|
182 |
|
4a53d636e2f4
6702956: OpenJDK: replace encumbered code (software synthesizer)
amenkov
parents:
diff
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|
183 |
public long skip(long n) throws IOException { |
4a53d636e2f4
6702956: OpenJDK: replace encumbered code (software synthesizer)
amenkov
parents:
diff
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|
184 |
if (avail == 0) |
4a53d636e2f4
6702956: OpenJDK: replace encumbered code (software synthesizer)
amenkov
parents:
diff
changeset
|
185 |
return -1; |
4a53d636e2f4
6702956: OpenJDK: replace encumbered code (software synthesizer)
amenkov
parents:
diff
changeset
|
186 |
if (n > avail) { |
4a53d636e2f4
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amenkov
parents:
diff
changeset
|
187 |
long len = stream.skip(avail); |
4a53d636e2f4
6702956: OpenJDK: replace encumbered code (software synthesizer)
amenkov
parents:
diff
changeset
|
188 |
if (len != -1) |
4a53d636e2f4
6702956: OpenJDK: replace encumbered code (software synthesizer)
amenkov
parents:
diff
changeset
|
189 |
filepointer += len; |
4a53d636e2f4
6702956: OpenJDK: replace encumbered code (software synthesizer)
amenkov
parents:
diff
changeset
|
190 |
avail = 0; |
4a53d636e2f4
6702956: OpenJDK: replace encumbered code (software synthesizer)
amenkov
parents:
diff
changeset
|
191 |
return len; |
4a53d636e2f4
6702956: OpenJDK: replace encumbered code (software synthesizer)
amenkov
parents:
diff
changeset
|
192 |
} else { |
4a53d636e2f4
6702956: OpenJDK: replace encumbered code (software synthesizer)
amenkov
parents:
diff
changeset
|
193 |
long ret = stream.skip(n); |
4a53d636e2f4
6702956: OpenJDK: replace encumbered code (software synthesizer)
amenkov
parents:
diff
changeset
|
194 |
if (ret == -1) |
4a53d636e2f4
6702956: OpenJDK: replace encumbered code (software synthesizer)
amenkov
parents:
diff
changeset
|
195 |
return -1; |
4a53d636e2f4
6702956: OpenJDK: replace encumbered code (software synthesizer)
amenkov
parents:
diff
changeset
|
196 |
avail -= ret; |
4a53d636e2f4
6702956: OpenJDK: replace encumbered code (software synthesizer)
amenkov
parents:
diff
changeset
|
197 |
filepointer += ret; |
4a53d636e2f4
6702956: OpenJDK: replace encumbered code (software synthesizer)
amenkov
parents:
diff
changeset
|
198 |
return ret; |
4a53d636e2f4
6702956: OpenJDK: replace encumbered code (software synthesizer)
amenkov
parents:
diff
changeset
|
199 |
} |
4a53d636e2f4
6702956: OpenJDK: replace encumbered code (software synthesizer)
amenkov
parents:
diff
changeset
|
200 |
} |
4a53d636e2f4
6702956: OpenJDK: replace encumbered code (software synthesizer)
amenkov
parents:
diff
changeset
|
201 |
|
4a53d636e2f4
6702956: OpenJDK: replace encumbered code (software synthesizer)
amenkov
parents:
diff
changeset
|
202 |
public int available() { |
4a53d636e2f4
6702956: OpenJDK: replace encumbered code (software synthesizer)
amenkov
parents:
diff
changeset
|
203 |
return (int)avail; |
4a53d636e2f4
6702956: OpenJDK: replace encumbered code (software synthesizer)
amenkov
parents:
diff
changeset
|
204 |
} |
4a53d636e2f4
6702956: OpenJDK: replace encumbered code (software synthesizer)
amenkov
parents:
diff
changeset
|
205 |
|
4a53d636e2f4
6702956: OpenJDK: replace encumbered code (software synthesizer)
amenkov
parents:
diff
changeset
|
206 |
public void finish() throws IOException { |
4a53d636e2f4
6702956: OpenJDK: replace encumbered code (software synthesizer)
amenkov
parents:
diff
changeset
|
207 |
if (avail != 0) { |
4a53d636e2f4
6702956: OpenJDK: replace encumbered code (software synthesizer)
amenkov
parents:
diff
changeset
|
208 |
skipBytes(avail); |
4a53d636e2f4
6702956: OpenJDK: replace encumbered code (software synthesizer)
amenkov
parents:
diff
changeset
|
209 |
} |
4a53d636e2f4
6702956: OpenJDK: replace encumbered code (software synthesizer)
amenkov
parents:
diff
changeset
|
210 |
} |
4a53d636e2f4
6702956: OpenJDK: replace encumbered code (software synthesizer)
amenkov
parents:
diff
changeset
|
211 |
|
4a53d636e2f4
6702956: OpenJDK: replace encumbered code (software synthesizer)
amenkov
parents:
diff
changeset
|
212 |
// Read ASCII chars from stream |
4a53d636e2f4
6702956: OpenJDK: replace encumbered code (software synthesizer)
amenkov
parents:
diff
changeset
|
213 |
public String readString(int len) throws IOException { |
4a53d636e2f4
6702956: OpenJDK: replace encumbered code (software synthesizer)
amenkov
parents:
diff
changeset
|
214 |
byte[] buff = new byte[len]; |
4a53d636e2f4
6702956: OpenJDK: replace encumbered code (software synthesizer)
amenkov
parents:
diff
changeset
|
215 |
readFully(buff); |
4a53d636e2f4
6702956: OpenJDK: replace encumbered code (software synthesizer)
amenkov
parents:
diff
changeset
|
216 |
for (int i = 0; i < buff.length; i++) { |
4a53d636e2f4
6702956: OpenJDK: replace encumbered code (software synthesizer)
amenkov
parents:
diff
changeset
|
217 |
if (buff[i] == 0) { |
4a53d636e2f4
6702956: OpenJDK: replace encumbered code (software synthesizer)
amenkov
parents:
diff
changeset
|
218 |
return new String(buff, 0, i, "ascii"); |
4a53d636e2f4
6702956: OpenJDK: replace encumbered code (software synthesizer)
amenkov
parents:
diff
changeset
|
219 |
} |
4a53d636e2f4
6702956: OpenJDK: replace encumbered code (software synthesizer)
amenkov
parents:
diff
changeset
|
220 |
} |
4a53d636e2f4
6702956: OpenJDK: replace encumbered code (software synthesizer)
amenkov
parents:
diff
changeset
|
221 |
return new String(buff, "ascii"); |
4a53d636e2f4
6702956: OpenJDK: replace encumbered code (software synthesizer)
amenkov
parents:
diff
changeset
|
222 |
} |
4a53d636e2f4
6702956: OpenJDK: replace encumbered code (software synthesizer)
amenkov
parents:
diff
changeset
|
223 |
|
4a53d636e2f4
6702956: OpenJDK: replace encumbered code (software synthesizer)
amenkov
parents:
diff
changeset
|
224 |
// Read 8 bit signed integer from stream |
4a53d636e2f4
6702956: OpenJDK: replace encumbered code (software synthesizer)
amenkov
parents:
diff
changeset
|
225 |
public byte readByte() throws IOException { |
4a53d636e2f4
6702956: OpenJDK: replace encumbered code (software synthesizer)
amenkov
parents:
diff
changeset
|
226 |
int ch = read(); |
4a53d636e2f4
6702956: OpenJDK: replace encumbered code (software synthesizer)
amenkov
parents:
diff
changeset
|
227 |
if (ch < 0) |
4a53d636e2f4
6702956: OpenJDK: replace encumbered code (software synthesizer)
amenkov
parents:
diff
changeset
|
228 |
throw new EOFException(); |
4a53d636e2f4
6702956: OpenJDK: replace encumbered code (software synthesizer)
amenkov
parents:
diff
changeset
|
229 |
return (byte) ch; |
4a53d636e2f4
6702956: OpenJDK: replace encumbered code (software synthesizer)
amenkov
parents:
diff
changeset
|
230 |
} |
4a53d636e2f4
6702956: OpenJDK: replace encumbered code (software synthesizer)
amenkov
parents:
diff
changeset
|
231 |
|
4a53d636e2f4
6702956: OpenJDK: replace encumbered code (software synthesizer)
amenkov
parents:
diff
changeset
|
232 |
// Read 16 bit signed integer from stream |
4a53d636e2f4
6702956: OpenJDK: replace encumbered code (software synthesizer)
amenkov
parents:
diff
changeset
|
233 |
public short readShort() throws IOException { |
4a53d636e2f4
6702956: OpenJDK: replace encumbered code (software synthesizer)
amenkov
parents:
diff
changeset
|
234 |
int ch1 = read(); |
4a53d636e2f4
6702956: OpenJDK: replace encumbered code (software synthesizer)
amenkov
parents:
diff
changeset
|
235 |
int ch2 = read(); |
4a53d636e2f4
6702956: OpenJDK: replace encumbered code (software synthesizer)
amenkov
parents:
diff
changeset
|
236 |
if (ch1 < 0) |
4a53d636e2f4
6702956: OpenJDK: replace encumbered code (software synthesizer)
amenkov
parents:
diff
changeset
|
237 |
throw new EOFException(); |
4a53d636e2f4
6702956: OpenJDK: replace encumbered code (software synthesizer)
amenkov
parents:
diff
changeset
|
238 |
if (ch2 < 0) |
4a53d636e2f4
6702956: OpenJDK: replace encumbered code (software synthesizer)
amenkov
parents:
diff
changeset
|
239 |
throw new EOFException(); |
4a53d636e2f4
6702956: OpenJDK: replace encumbered code (software synthesizer)
amenkov
parents:
diff
changeset
|
240 |
return (short)(ch1 | (ch2 << 8)); |
4a53d636e2f4
6702956: OpenJDK: replace encumbered code (software synthesizer)
amenkov
parents:
diff
changeset
|
241 |
} |
4a53d636e2f4
6702956: OpenJDK: replace encumbered code (software synthesizer)
amenkov
parents:
diff
changeset
|
242 |
|
4a53d636e2f4
6702956: OpenJDK: replace encumbered code (software synthesizer)
amenkov
parents:
diff
changeset
|
243 |
// Read 32 bit signed integer from stream |
4a53d636e2f4
6702956: OpenJDK: replace encumbered code (software synthesizer)
amenkov
parents:
diff
changeset
|
244 |
public int readInt() throws IOException { |
4a53d636e2f4
6702956: OpenJDK: replace encumbered code (software synthesizer)
amenkov
parents:
diff
changeset
|
245 |
int ch1 = read(); |
4a53d636e2f4
6702956: OpenJDK: replace encumbered code (software synthesizer)
amenkov
parents:
diff
changeset
|
246 |
int ch2 = read(); |
4a53d636e2f4
6702956: OpenJDK: replace encumbered code (software synthesizer)
amenkov
parents:
diff
changeset
|
247 |
int ch3 = read(); |
4a53d636e2f4
6702956: OpenJDK: replace encumbered code (software synthesizer)
amenkov
parents:
diff
changeset
|
248 |
int ch4 = read(); |
4a53d636e2f4
6702956: OpenJDK: replace encumbered code (software synthesizer)
amenkov
parents:
diff
changeset
|
249 |
if (ch1 < 0) |
4a53d636e2f4
6702956: OpenJDK: replace encumbered code (software synthesizer)
amenkov
parents:
diff
changeset
|
250 |
throw new EOFException(); |
4a53d636e2f4
6702956: OpenJDK: replace encumbered code (software synthesizer)
amenkov
parents:
diff
changeset
|
251 |
if (ch2 < 0) |
4a53d636e2f4
6702956: OpenJDK: replace encumbered code (software synthesizer)
amenkov
parents:
diff
changeset
|
252 |
throw new EOFException(); |
4a53d636e2f4
6702956: OpenJDK: replace encumbered code (software synthesizer)
amenkov
parents:
diff
changeset
|
253 |
if (ch3 < 0) |
4a53d636e2f4
6702956: OpenJDK: replace encumbered code (software synthesizer)
amenkov
parents:
diff
changeset
|
254 |
throw new EOFException(); |
4a53d636e2f4
6702956: OpenJDK: replace encumbered code (software synthesizer)
amenkov
parents:
diff
changeset
|
255 |
if (ch4 < 0) |
4a53d636e2f4
6702956: OpenJDK: replace encumbered code (software synthesizer)
amenkov
parents:
diff
changeset
|
256 |
throw new EOFException(); |
4a53d636e2f4
6702956: OpenJDK: replace encumbered code (software synthesizer)
amenkov
parents:
diff
changeset
|
257 |
return ch1 + (ch2 << 8) | (ch3 << 16) | (ch4 << 24); |
4a53d636e2f4
6702956: OpenJDK: replace encumbered code (software synthesizer)
amenkov
parents:
diff
changeset
|
258 |
} |
4a53d636e2f4
6702956: OpenJDK: replace encumbered code (software synthesizer)
amenkov
parents:
diff
changeset
|
259 |
|
4a53d636e2f4
6702956: OpenJDK: replace encumbered code (software synthesizer)
amenkov
parents:
diff
changeset
|
260 |
// Read 64 bit signed integer from stream |
4a53d636e2f4
6702956: OpenJDK: replace encumbered code (software synthesizer)
amenkov
parents:
diff
changeset
|
261 |
public long readLong() throws IOException { |
4a53d636e2f4
6702956: OpenJDK: replace encumbered code (software synthesizer)
amenkov
parents:
diff
changeset
|
262 |
long ch1 = read(); |
4a53d636e2f4
6702956: OpenJDK: replace encumbered code (software synthesizer)
amenkov
parents:
diff
changeset
|
263 |
long ch2 = read(); |
4a53d636e2f4
6702956: OpenJDK: replace encumbered code (software synthesizer)
amenkov
parents:
diff
changeset
|
264 |
long ch3 = read(); |
4a53d636e2f4
6702956: OpenJDK: replace encumbered code (software synthesizer)
amenkov
parents:
diff
changeset
|
265 |
long ch4 = read(); |
4a53d636e2f4
6702956: OpenJDK: replace encumbered code (software synthesizer)
amenkov
parents:
diff
changeset
|
266 |
long ch5 = read(); |
4a53d636e2f4
6702956: OpenJDK: replace encumbered code (software synthesizer)
amenkov
parents:
diff
changeset
|
267 |
long ch6 = read(); |
4a53d636e2f4
6702956: OpenJDK: replace encumbered code (software synthesizer)
amenkov
parents:
diff
changeset
|
268 |
long ch7 = read(); |
4a53d636e2f4
6702956: OpenJDK: replace encumbered code (software synthesizer)
amenkov
parents:
diff
changeset
|
269 |
long ch8 = read(); |
4a53d636e2f4
6702956: OpenJDK: replace encumbered code (software synthesizer)
amenkov
parents:
diff
changeset
|
270 |
if (ch1 < 0) |
4a53d636e2f4
6702956: OpenJDK: replace encumbered code (software synthesizer)
amenkov
parents:
diff
changeset
|
271 |
throw new EOFException(); |
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if (ch2 < 0) |
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throw new EOFException(); |
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if (ch3 < 0) |
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throw new EOFException(); |
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if (ch4 < 0) |
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throw new EOFException(); |
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if (ch5 < 0) |
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throw new EOFException(); |
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if (ch6 < 0) |
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throw new EOFException(); |
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if (ch7 < 0) |
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throw new EOFException(); |
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if (ch8 < 0) |
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throw new EOFException(); |
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return ch1 | (ch2 << 8) | (ch3 << 16) | (ch4 << 24) |
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| (ch5 << 32) | (ch6 << 40) | (ch7 << 48) | (ch8 << 56); |
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} |
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|
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// Read 8 bit unsigned integer from stream |
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public int readUnsignedByte() throws IOException { |
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int ch = read(); |
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if (ch < 0) |
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throw new EOFException(); |
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return ch; |
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} |
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|
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// Read 16 bit unsigned integer from stream |
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public int readUnsignedShort() throws IOException { |
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int ch1 = read(); |
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int ch2 = read(); |
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if (ch1 < 0) |
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throw new EOFException(); |
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if (ch2 < 0) |
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throw new EOFException(); |
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return ch1 | (ch2 << 8); |
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} |
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308 |
|
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// Read 32 bit unsigned integer from stream |
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public long readUnsignedInt() throws IOException { |
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long ch1 = read(); |
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long ch2 = read(); |
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long ch3 = read(); |
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long ch4 = read(); |
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if (ch1 < 0) |
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316 |
throw new EOFException(); |
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if (ch2 < 0) |
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throw new EOFException(); |
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319 |
if (ch3 < 0) |
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320 |
throw new EOFException(); |
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321 |
if (ch4 < 0) |
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322 |
throw new EOFException(); |
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323 |
return ch1 + (ch2 << 8) | (ch3 << 16) | (ch4 << 24); |
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324 |
} |
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325 |
|
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public void close() throws IOException { |
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finish(); |
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328 |
if (this == root) |
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329 |
stream.close(); |
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330 |
stream = null; |
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331 |
} |
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332 |
} |