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-rw-r--r--lib/jinterface/java_src/com/ericsson/otp/erlang/OtpOutputStream.java964
1 files changed, 485 insertions, 479 deletions
diff --git a/lib/jinterface/java_src/com/ericsson/otp/erlang/OtpOutputStream.java b/lib/jinterface/java_src/com/ericsson/otp/erlang/OtpOutputStream.java
index ef60a9f38a..b8493b57ff 100644
--- a/lib/jinterface/java_src/com/ericsson/otp/erlang/OtpOutputStream.java
+++ b/lib/jinterface/java_src/com/ericsson/otp/erlang/OtpOutputStream.java
@@ -1,19 +1,19 @@
/*
* %CopyrightBegin%
- *
+ *
* Copyright Ericsson AB 2000-2013. All Rights Reserved.
- *
+ *
* The contents of this file are subject to the Erlang Public License,
* Version 1.1, (the "License"); you may not use this file except in
* compliance with the License. You should have received a copy of the
* Erlang Public License along with this software. If not, it can be
* retrieved online at http://www.erlang.org/.
- *
+ *
* Software distributed under the License is distributed on an "AS IS"
* basis, WITHOUT WARRANTY OF ANY KIND, either express or implied. See
* the License for the specific language governing rights and limitations
* under the License.
- *
+ *
* %CopyrightEnd%
*/
package com.ericsson.otp.erlang;
@@ -30,17 +30,20 @@ import java.util.zip.Deflater;
/**
* Provides a stream for encoding Erlang terms to external format, for
* transmission or storage.
- *
+ *
* <p>
* Note that this class is not synchronized, if you need synchronization you
* must provide it yourself.
- *
+ *
*/
public class OtpOutputStream extends ByteArrayOutputStream {
/** The default initial size of the stream. * */
public static final int defaultInitialSize = 2048;
- /** The default increment used when growing the stream (increment at least this much). * */
+ /**
+ * The default increment used when growing the stream (increment at least
+ * this much). *
+ */
public static final int defaultIncrement = 2048;
// static formats, used to encode floats and doubles
@@ -57,66 +60,66 @@ public class OtpOutputStream extends ByteArrayOutputStream {
* Create a stream with the default initial size (2048 bytes).
*/
public OtpOutputStream() {
- this(defaultInitialSize);
+ this(defaultInitialSize);
}
/**
* Create a stream with the specified initial size.
*/
public OtpOutputStream(final int size) {
- super(size);
+ super(size);
}
/**
* Create a stream containing the encoded version of the given Erlang term.
*/
public OtpOutputStream(final OtpErlangObject o) {
- this();
- write_any(o);
+ this();
+ write_any(o);
}
// package scope
/*
* Get the contents of the output stream as an input stream instead. This is
* used internally in {@link OtpCconnection} for tracing outgoing packages.
- *
+ *
* @param offset where in the output stream to read data from when creating
* the input stream. The offset is necessary because header contents start 5
* bytes into the header buffer, whereas payload contents start at the
* beginning
- *
+ *
* @return an input stream containing the same raw data.
*/
OtpInputStream getOtpInputStream(final int offset) {
- return new OtpInputStream(super.buf, offset, super.count - offset, 0);
+ return new OtpInputStream(super.buf, offset, super.count - offset, 0);
}
/**
* Get the current position in the stream.
- *
+ *
* @return the current position in the stream.
*/
public int getPos() {
- return super.count;
+ return super.count;
}
/**
* Trims the capacity of this <tt>OtpOutputStream</tt> instance to be the
- * buffer's current size. An application can use this operation to minimize
+ * buffer's current size. An application can use this operation to minimize
* the storage of an <tt>OtpOutputStream</tt> instance.
*/
public void trimToSize() {
- resize(super.count);
+ resize(super.count);
}
- private void resize(int size) {
- if (size < super.buf.length) {
- final byte[] tmp = new byte[size];
- System.arraycopy(super.buf, 0, tmp, 0, size);
- super.buf = tmp;
- } else if (size > super.buf.length) {
- ensureCapacity(size);
- }
+ private void resize(final int size) {
+ if (size < super.buf.length) {
+ final byte[] tmp = new byte[size];
+ System.arraycopy(super.buf, 0, tmp, 0, size);
+ super.buf = tmp;
+ } else if (size > super.buf.length) {
+ ensureCapacity(size);
+ }
}
/**
@@ -124,228 +127,237 @@ public class OtpOutputStream extends ByteArrayOutputStream {
* necessary, to ensure that it can hold at least the number of elements
* specified by the minimum capacity argument.
*
- * @param minCapacity the desired minimum capacity
+ * @param minCapacity
+ * the desired minimum capacity
*/
- public void ensureCapacity(int minCapacity) {
- if (minCapacity > fixedSize) {
- throw new IllegalArgumentException("Trying to increase fixed-size buffer");
- }
- int oldCapacity = super.buf.length;
- if (minCapacity > oldCapacity) {
- int newCapacity = (oldCapacity * 3)/2 + 1;
- if (newCapacity < oldCapacity + defaultIncrement)
- newCapacity = oldCapacity + defaultIncrement;
- if (newCapacity < minCapacity)
- newCapacity = minCapacity;
- newCapacity = Math.min(fixedSize, newCapacity);
- // minCapacity is usually close to size, so this is a win:
- final byte[] tmp = new byte[newCapacity];
- System.arraycopy(super.buf, 0, tmp, 0, super.count);
- super.buf = tmp;
- }
+ public void ensureCapacity(final int minCapacity) {
+ if (minCapacity > fixedSize) {
+ throw new IllegalArgumentException(
+ "Trying to increase fixed-size buffer");
+ }
+ final int oldCapacity = super.buf.length;
+ if (minCapacity > oldCapacity) {
+ int newCapacity = oldCapacity * 3 / 2 + 1;
+ if (newCapacity < oldCapacity + defaultIncrement) {
+ newCapacity = oldCapacity + defaultIncrement;
+ }
+ if (newCapacity < minCapacity) {
+ newCapacity = minCapacity;
+ }
+ newCapacity = Math.min(fixedSize, newCapacity);
+ // minCapacity is usually close to size, so this is a win:
+ final byte[] tmp = new byte[newCapacity];
+ System.arraycopy(super.buf, 0, tmp, 0, super.count);
+ super.buf = tmp;
+ }
}
/**
* Write one byte to the stream.
- *
+ *
* @param b
* the byte to write.
- *
+ *
*/
public void write(final byte b) {
- ensureCapacity(super.count + 1);
- super.buf[super.count++] = b;
+ ensureCapacity(super.count + 1);
+ super.buf[super.count++] = b;
}
- /* (non-Javadoc)
+ /*
+ * (non-Javadoc)
+ *
* @see java.io.ByteArrayOutputStream#write(byte[])
*/
@Override
public void write(final byte[] abuf) {
- // don't assume that super.write(byte[]) calls write(buf, 0, buf.length)
- write(abuf, 0, abuf.length);
+ // don't assume that super.write(byte[]) calls write(buf, 0, buf.length)
+ write(abuf, 0, abuf.length);
}
- /* (non-Javadoc)
+ /*
+ * (non-Javadoc)
+ *
* @see java.io.ByteArrayOutputStream#write(int)
*/
@Override
- public synchronized void write(int b) {
- ensureCapacity(super.count + 1);
- super.buf[super.count] = (byte) b;
- count += 1;
+ public synchronized void write(final int b) {
+ ensureCapacity(super.count + 1);
+ super.buf[super.count] = (byte) b;
+ count += 1;
}
- /* (non-Javadoc)
+ /*
+ * (non-Javadoc)
+ *
* @see java.io.ByteArrayOutputStream#write(byte[], int, int)
*/
@Override
- public synchronized void write(byte[] b, int off, int len) {
- if ((off < 0) || (off > b.length) || (len < 0)
- || ((off + len) - b.length > 0)) {
- throw new IndexOutOfBoundsException();
- }
- ensureCapacity(super.count + len);
- System.arraycopy(b, off, super.buf, super.count, len);
- super.count += len;
+ public synchronized void write(final byte[] b, final int off, final int len) {
+ if (off < 0 || off > b.length || len < 0 || off + len - b.length > 0) {
+ throw new IndexOutOfBoundsException();
+ }
+ ensureCapacity(super.count + len);
+ System.arraycopy(b, off, super.buf, super.count, len);
+ super.count += len;
}
/**
* Write the low byte of a value to the stream.
- *
+ *
* @param n
* the value to use.
- *
+ *
*/
public void write1(final long n) {
- write((byte) (n & 0xff));
+ write((byte) (n & 0xff));
}
/**
* Write an array of bytes to the stream.
- *
+ *
* @param bytes
* the array of bytes to write.
- *
+ *
*/
public void writeN(final byte[] bytes) {
- write(bytes);
+ write(bytes);
}
/**
* Get the current capacity of the stream. As bytes are added the capacity
* of the stream is increased automatically, however this method returns the
* current size.
- *
+ *
* @return the size of the internal buffer used by the stream.
*/
public int length() {
- return super.buf.length;
+ return super.buf.length;
}
/**
* Get the number of bytes in the stream.
- *
+ *
* @return the number of bytes in the stream.
- *
+ *
* @deprecated As of Jinterface 1.4, replaced by super.size().
* @see #size()
*/
@Deprecated
public int count() {
- return count;
+ return count;
}
/**
* Write the low two bytes of a value to the stream in big endian order.
- *
+ *
* @param n
* the value to use.
*/
public void write2BE(final long n) {
- write((byte) ((n & 0xff00) >> 8));
- write((byte) (n & 0xff));
+ write((byte) ((n & 0xff00) >> 8));
+ write((byte) (n & 0xff));
}
/**
* Write the low four bytes of a value to the stream in big endian order.
- *
+ *
* @param n
* the value to use.
*/
public void write4BE(final long n) {
- write((byte) ((n & 0xff000000) >> 24));
- write((byte) ((n & 0xff0000) >> 16));
- write((byte) ((n & 0xff00) >> 8));
- write((byte) (n & 0xff));
+ write((byte) ((n & 0xff000000) >> 24));
+ write((byte) ((n & 0xff0000) >> 16));
+ write((byte) ((n & 0xff00) >> 8));
+ write((byte) (n & 0xff));
}
/**
* Write the low eight (all) bytes of a value to the stream in big endian
* order.
- *
+ *
* @param n
* the value to use.
*/
public void write8BE(final long n) {
- write((byte) (n >> 56 & 0xff));
- write((byte) (n >> 48 & 0xff));
- write((byte) (n >> 40 & 0xff));
- write((byte) (n >> 32 & 0xff));
- write((byte) (n >> 24 & 0xff));
- write((byte) (n >> 16 & 0xff));
- write((byte) (n >> 8 & 0xff));
- write((byte) (n & 0xff));
+ write((byte) (n >> 56 & 0xff));
+ write((byte) (n >> 48 & 0xff));
+ write((byte) (n >> 40 & 0xff));
+ write((byte) (n >> 32 & 0xff));
+ write((byte) (n >> 24 & 0xff));
+ write((byte) (n >> 16 & 0xff));
+ write((byte) (n >> 8 & 0xff));
+ write((byte) (n & 0xff));
}
/**
* Write any number of bytes in little endian format.
- *
+ *
* @param n
* the value to use.
* @param b
* the number of bytes to write from the little end.
*/
public void writeLE(final long n, final int b) {
- long v = n;
- for (int i = 0; i < b; i++) {
- write((byte) (v & 0xff));
- v >>= 8;
- }
+ long v = n;
+ for (int i = 0; i < b; i++) {
+ write((byte) (v & 0xff));
+ v >>= 8;
+ }
}
/**
* Write the low two bytes of a value to the stream in little endian order.
- *
+ *
* @param n
* the value to use.
*/
public void write2LE(final long n) {
- write((byte) (n & 0xff));
- write((byte) ((n & 0xff00) >> 8));
+ write((byte) (n & 0xff));
+ write((byte) ((n & 0xff00) >> 8));
}
/**
* Write the low four bytes of a value to the stream in little endian order.
- *
+ *
* @param n
* the value to use.
*/
public void write4LE(final long n) {
- write((byte) (n & 0xff));
- write((byte) ((n & 0xff00) >> 8));
- write((byte) ((n & 0xff0000) >> 16));
- write((byte) ((n & 0xff000000) >> 24));
+ write((byte) (n & 0xff));
+ write((byte) ((n & 0xff00) >> 8));
+ write((byte) ((n & 0xff0000) >> 16));
+ write((byte) ((n & 0xff000000) >> 24));
}
/**
* Write the low eight bytes of a value to the stream in little endian
* order.
- *
+ *
* @param n
* the value to use.
*/
public void write8LE(final long n) {
- write((byte) (n & 0xff));
- write((byte) (n >> 8 & 0xff));
- write((byte) (n >> 16 & 0xff));
- write((byte) (n >> 24 & 0xff));
- write((byte) (n >> 32 & 0xff));
- write((byte) (n >> 40 & 0xff));
- write((byte) (n >> 48 & 0xff));
- write((byte) (n >> 56 & 0xff));
+ write((byte) (n & 0xff));
+ write((byte) (n >> 8 & 0xff));
+ write((byte) (n >> 16 & 0xff));
+ write((byte) (n >> 24 & 0xff));
+ write((byte) (n >> 32 & 0xff));
+ write((byte) (n >> 40 & 0xff));
+ write((byte) (n >> 48 & 0xff));
+ write((byte) (n >> 56 & 0xff));
}
/**
* Write the low four bytes of a value to the stream in bif endian order, at
* the specified position. If the position specified is beyond the end of
* the stream, this method will have no effect.
- *
+ *
* Normally this method should be used in conjunction with {@link #size()
* size()}, when is is necessary to insert data into the stream before it is
* known what the actual value should be. For example:
- *
+ *
* <pre>
* int pos = s.size();
* s.write4BE(0); // make space for length data,
@@ -354,501 +366,495 @@ public class OtpOutputStream extends ByteArrayOutputStream {
* // later... when we know the length value
* s.poke4BE(pos, length);
* </pre>
- *
- *
+ *
+ *
* @param offset
* the position in the stream.
* @param n
* the value to use.
*/
public void poke4BE(final int offset, final long n) {
- if (offset < super.count) {
- buf[offset + 0] = (byte) ((n & 0xff000000) >> 24);
- buf[offset + 1] = (byte) ((n & 0xff0000) >> 16);
- buf[offset + 2] = (byte) ((n & 0xff00) >> 8);
- buf[offset + 3] = (byte) (n & 0xff);
- }
+ if (offset < super.count) {
+ buf[offset + 0] = (byte) ((n & 0xff000000) >> 24);
+ buf[offset + 1] = (byte) ((n & 0xff0000) >> 16);
+ buf[offset + 2] = (byte) ((n & 0xff00) >> 8);
+ buf[offset + 3] = (byte) (n & 0xff);
+ }
}
/**
* Write a string to the stream as an Erlang atom.
- *
+ *
* @param atom
* the string to write.
*/
public void write_atom(final String atom) {
- String enc_atom;
- byte[] bytes;
- boolean isLatin1 = true;
-
- if (atom.codePointCount(0, atom.length()) <= OtpExternal.maxAtomLength) {
- enc_atom = atom;
- }
- else {
- /*
- * Throwing an exception would be better I think,
- * but truncation seems to be the way it has
- * been done in other parts of OTP...
- */
- enc_atom = new String(OtpErlangString.stringToCodePoints(atom),
- 0, OtpExternal.maxAtomLength);
- }
-
- for (int offset = 0; offset < enc_atom.length();) {
- final int cp = enc_atom.codePointAt(offset);
- if ((cp & ~0xFF) != 0) {
- isLatin1 = false;
- break;
- }
- offset += Character.charCount(cp);
- }
- try {
- if (isLatin1) {
- bytes = enc_atom.getBytes("ISO-8859-1");
- write1(OtpExternal.atomTag);
- write2BE(bytes.length);
- }
- else {
- bytes = enc_atom.getBytes("UTF-8");
- final int length = bytes.length;
- if (length < 256) {
- write1(OtpExternal.smallAtomUtf8Tag);
- write1(length);
- }
- else {
- write1(OtpExternal.atomUtf8Tag);
- write2BE(length);
- }
- }
- writeN(bytes);
- } catch (final java.io.UnsupportedEncodingException e) {
- /*
- * Sigh, why didn't the API designer add an
- * OtpErlangEncodeException to these encoding
- * functions?!? Instead of changing the API we
- * write an invalid atom and let it fail for
- * whoever trying to decode this... Sigh,
- * again...
- */
- write1(OtpExternal.smallAtomUtf8Tag);
- write1(2);
- write2BE(0xffff); /* Invalid UTF-8 */
- }
+ String enc_atom;
+ byte[] bytes;
+ boolean isLatin1 = true;
+
+ if (atom.codePointCount(0, atom.length()) <= OtpExternal.maxAtomLength) {
+ enc_atom = atom;
+ } else {
+ /*
+ * Throwing an exception would be better I think, but truncation
+ * seems to be the way it has been done in other parts of OTP...
+ */
+ enc_atom = new String(OtpErlangString.stringToCodePoints(atom), 0,
+ OtpExternal.maxAtomLength);
+ }
+
+ for (int offset = 0; offset < enc_atom.length();) {
+ final int cp = enc_atom.codePointAt(offset);
+ if ((cp & ~0xFF) != 0) {
+ isLatin1 = false;
+ break;
+ }
+ offset += Character.charCount(cp);
+ }
+ try {
+ if (isLatin1) {
+ bytes = enc_atom.getBytes("ISO-8859-1");
+ write1(OtpExternal.atomTag);
+ write2BE(bytes.length);
+ } else {
+ bytes = enc_atom.getBytes("UTF-8");
+ final int length = bytes.length;
+ if (length < 256) {
+ write1(OtpExternal.smallAtomUtf8Tag);
+ write1(length);
+ } else {
+ write1(OtpExternal.atomUtf8Tag);
+ write2BE(length);
+ }
+ }
+ writeN(bytes);
+ } catch (final java.io.UnsupportedEncodingException e) {
+ /*
+ * Sigh, why didn't the API designer add an OtpErlangEncodeException
+ * to these encoding functions?!? Instead of changing the API we
+ * write an invalid atom and let it fail for whoever trying to
+ * decode this... Sigh, again...
+ */
+ write1(OtpExternal.smallAtomUtf8Tag);
+ write1(2);
+ write2BE(0xffff); /* Invalid UTF-8 */
+ }
}
/**
* Write an array of bytes to the stream as an Erlang binary.
- *
+ *
* @param bin
* the array of bytes to write.
*/
public void write_binary(final byte[] bin) {
- write1(OtpExternal.binTag);
- write4BE(bin.length);
- writeN(bin);
+ write1(OtpExternal.binTag);
+ write4BE(bin.length);
+ writeN(bin);
}
/**
* Write an array of bytes to the stream as an Erlang bitstr.
- *
+ *
* @param bin
* the array of bytes to write.
* @param pad_bits
* the number of zero pad bits at the low end of the last byte
*/
public void write_bitstr(final byte[] bin, final int pad_bits) {
- if (pad_bits == 0) {
- write_binary(bin);
- return;
- }
- write1(OtpExternal.bitBinTag);
- write4BE(bin.length);
- write1(8 - pad_bits);
- writeN(bin);
+ if (pad_bits == 0) {
+ write_binary(bin);
+ return;
+ }
+ write1(OtpExternal.bitBinTag);
+ write4BE(bin.length);
+ write1(8 - pad_bits);
+ writeN(bin);
}
/**
* Write a boolean value to the stream as the Erlang atom 'true' or 'false'.
- *
+ *
* @param b
* the boolean value to write.
*/
public void write_boolean(final boolean b) {
- write_atom(String.valueOf(b));
+ write_atom(String.valueOf(b));
}
/**
* Write a single byte to the stream as an Erlang integer. The byte is
* really an IDL 'octet', that is, unsigned.
- *
+ *
* @param b
* the byte to use.
*/
public void write_byte(final byte b) {
- this.write_long(b & 0xffL, true);
+ this.write_long(b & 0xffL, true);
}
/**
* Write a character to the stream as an Erlang integer. The character may
* be a 16 bit character, kind of IDL 'wchar'. It is up to the Erlang side
* to take care of souch, if they should be used.
- *
+ *
* @param c
* the character to use.
*/
public void write_char(final char c) {
- this.write_long(c & 0xffffL, true);
+ this.write_long(c & 0xffffL, true);
}
/**
* Write a double value to the stream.
- *
+ *
* @param d
* the double to use.
*/
public void write_double(final double d) {
- write1(OtpExternal.newFloatTag);
- write8BE(Double.doubleToLongBits(d));
+ write1(OtpExternal.newFloatTag);
+ write8BE(Double.doubleToLongBits(d));
}
/**
* Write a float value to the stream.
- *
+ *
* @param f
* the float to use.
*/
public void write_float(final float f) {
- write_double(f);
+ write_double(f);
}
public void write_big_integer(final BigInteger v) {
- if (v.bitLength() < 64) {
- this.write_long(v.longValue(), true);
- return;
- }
- final int signum = v.signum();
- BigInteger val = v;
- if (signum < 0) {
- val = val.negate();
- }
- final byte[] magnitude = val.toByteArray();
- final int n = magnitude.length;
- // Reverse the array to make it little endian.
- for (int i = 0, j = n; i < j--; i++) {
- // Swap [i] with [j]
- final byte b = magnitude[i];
- magnitude[i] = magnitude[j];
- magnitude[j] = b;
- }
- if ((n & 0xFF) == n) {
- write1(OtpExternal.smallBigTag);
- write1(n); // length
- } else {
- write1(OtpExternal.largeBigTag);
- write4BE(n); // length
- }
- write1(signum < 0 ? 1 : 0); // sign
- // Write the array
- writeN(magnitude);
+ if (v.bitLength() < 64) {
+ this.write_long(v.longValue(), true);
+ return;
+ }
+ final int signum = v.signum();
+ BigInteger val = v;
+ if (signum < 0) {
+ val = val.negate();
+ }
+ final byte[] magnitude = val.toByteArray();
+ final int n = magnitude.length;
+ // Reverse the array to make it little endian.
+ for (int i = 0, j = n; i < j--; i++) {
+ // Swap [i] with [j]
+ final byte b = magnitude[i];
+ magnitude[i] = magnitude[j];
+ magnitude[j] = b;
+ }
+ if ((n & 0xFF) == n) {
+ write1(OtpExternal.smallBigTag);
+ write1(n); // length
+ } else {
+ write1(OtpExternal.largeBigTag);
+ write4BE(n); // length
+ }
+ write1(signum < 0 ? 1 : 0); // sign
+ // Write the array
+ writeN(magnitude);
}
void write_long(final long v, final boolean unsigned) {
- /*
- * If v<0 and unsigned==true the value
- * java.lang.Long.MAX_VALUE-java.lang.Long.MIN_VALUE+1+v is written, i.e
- * v is regarded as unsigned two's complement.
- */
- if ((v & 0xffL) == v) {
- // will fit in one byte
- write1(OtpExternal.smallIntTag);
- write1(v);
- } else {
- // note that v != 0L
- if (v < 0 && unsigned || v < OtpExternal.erlMin
- || v > OtpExternal.erlMax) {
- // some kind of bignum
- final long abs = unsigned ? v : v < 0 ? -v : v;
- final int sign = unsigned ? 0 : v < 0 ? 1 : 0;
- int n;
- long mask;
- for (mask = 0xFFFFffffL, n = 4; (abs & mask) != abs; n++, mask = mask << 8 | 0xffL) {
- // count nonzero bytes
- }
- write1(OtpExternal.smallBigTag);
- write1(n); // length
- write1(sign); // sign
- writeLE(abs, n); // value. obs! little endian
- } else {
- write1(OtpExternal.intTag);
- write4BE(v);
- }
- }
+ /*
+ * If v<0 and unsigned==true the value
+ * java.lang.Long.MAX_VALUE-java.lang.Long.MIN_VALUE+1+v is written, i.e
+ * v is regarded as unsigned two's complement.
+ */
+ if ((v & 0xffL) == v) {
+ // will fit in one byte
+ write1(OtpExternal.smallIntTag);
+ write1(v);
+ } else {
+ // note that v != 0L
+ if (v < 0 && unsigned || v < OtpExternal.erlMin
+ || v > OtpExternal.erlMax) {
+ // some kind of bignum
+ final long abs = unsigned ? v : v < 0 ? -v : v;
+ final int sign = unsigned ? 0 : v < 0 ? 1 : 0;
+ int n;
+ long mask;
+ for (mask = 0xFFFFffffL, n = 4; (abs & mask) != abs; n++, mask = mask << 8 | 0xffL) {
+ // count nonzero bytes
+ }
+ write1(OtpExternal.smallBigTag);
+ write1(n); // length
+ write1(sign); // sign
+ writeLE(abs, n); // value. obs! little endian
+ } else {
+ write1(OtpExternal.intTag);
+ write4BE(v);
+ }
+ }
}
/**
* Write a long to the stream.
- *
+ *
* @param l
* the long to use.
*/
public void write_long(final long l) {
- this.write_long(l, false);
+ this.write_long(l, false);
}
/**
* Write a positive long to the stream. The long is interpreted as a two's
* complement unsigned long even if it is negative.
- *
+ *
* @param ul
* the long to use.
*/
public void write_ulong(final long ul) {
- this.write_long(ul, true);
+ this.write_long(ul, true);
}
/**
* Write an integer to the stream.
- *
+ *
* @param i
* the integer to use.
*/
public void write_int(final int i) {
- this.write_long(i, false);
+ this.write_long(i, false);
}
/**
* Write a positive integer to the stream. The integer is interpreted as a
* two's complement unsigned integer even if it is negative.
- *
+ *
* @param ui
* the integer to use.
*/
public void write_uint(final int ui) {
- this.write_long(ui & 0xFFFFffffL, true);
+ this.write_long(ui & 0xFFFFffffL, true);
}
/**
* Write a short to the stream.
- *
+ *
* @param s
* the short to use.
*/
public void write_short(final short s) {
- this.write_long(s, false);
+ this.write_long(s, false);
}
/**
* Write a positive short to the stream. The short is interpreted as a two's
* complement unsigned short even if it is negative.
- *
+ *
* @param us
* the short to use.
*/
public void write_ushort(final short us) {
- this.write_long(us & 0xffffL, true);
+ this.write_long(us & 0xffffL, true);
}
/**
* Write an Erlang list header to the stream. After calling this method, you
* must write 'arity' elements to the stream followed by nil, or it will not
* be possible to decode it later.
- *
+ *
* @param arity
* the number of elements in the list.
*/
public void write_list_head(final int arity) {
- if (arity == 0) {
- write_nil();
- } else {
- write1(OtpExternal.listTag);
- write4BE(arity);
- }
+ if (arity == 0) {
+ write_nil();
+ } else {
+ write1(OtpExternal.listTag);
+ write4BE(arity);
+ }
}
/**
* Write an empty Erlang list to the stream.
*/
public void write_nil() {
- write1(OtpExternal.nilTag);
+ write1(OtpExternal.nilTag);
}
/**
* Write an Erlang tuple header to the stream. After calling this method,
* you must write 'arity' elements to the stream or it will not be possible
* to decode it later.
- *
+ *
* @param arity
* the number of elements in the tuple.
*/
public void write_tuple_head(final int arity) {
- if (arity < 0xff) {
- write1(OtpExternal.smallTupleTag);
- write1(arity);
- } else {
- write1(OtpExternal.largeTupleTag);
- write4BE(arity);
- }
+ if (arity < 0xff) {
+ write1(OtpExternal.smallTupleTag);
+ write1(arity);
+ } else {
+ write1(OtpExternal.largeTupleTag);
+ write4BE(arity);
+ }
}
/**
* Write an Erlang PID to the stream.
- *
+ *
* @param node
* the nodename.
- *
+ *
* @param id
* an arbitrary number. Only the low order 15 bits will be used.
- *
+ *
* @param serial
* another arbitrary number. Only the low order 13 bits will be
* used.
- *
+ *
* @param creation
* yet another arbitrary number. Only the low order 2 bits will
* be used.
- *
+ *
*/
public void write_pid(final String node, final int id, final int serial,
- final int creation) {
- write1(OtpExternal.pidTag);
- write_atom(node);
- write4BE(id & 0x7fff); // 15 bits
- write4BE(serial & 0x1fff); // 13 bits
- write1(creation & 0x3); // 2 bits
+ final int creation) {
+ write1(OtpExternal.pidTag);
+ write_atom(node);
+ write4BE(id & 0x7fff); // 15 bits
+ write4BE(serial & 0x1fff); // 13 bits
+ write1(creation & 0x3); // 2 bits
}
/**
* Write an Erlang port to the stream.
- *
+ *
* @param node
* the nodename.
- *
+ *
* @param id
* an arbitrary number. Only the low order 28 bits will be used.
- *
+ *
* @param creation
* another arbitrary number. Only the low order 2 bits will be
* used.
- *
+ *
*/
public void write_port(final String node, final int id, final int creation) {
- write1(OtpExternal.portTag);
- write_atom(node);
- write4BE(id & 0xfffffff); // 28 bits
- write1(creation & 0x3); // 2 bits
+ write1(OtpExternal.portTag);
+ write_atom(node);
+ write4BE(id & 0xfffffff); // 28 bits
+ write1(creation & 0x3); // 2 bits
}
/**
* Write an old style Erlang ref to the stream.
- *
+ *
* @param node
* the nodename.
- *
+ *
* @param id
* an arbitrary number. Only the low order 18 bits will be used.
- *
+ *
* @param creation
* another arbitrary number. Only the low order 2 bits will be
* used.
- *
+ *
*/
public void write_ref(final String node, final int id, final int creation) {
- write1(OtpExternal.refTag);
- write_atom(node);
- write4BE(id & 0x3ffff); // 18 bits
- write1(creation & 0x3); // 2 bits
+ write1(OtpExternal.refTag);
+ write_atom(node);
+ write4BE(id & 0x3ffff); // 18 bits
+ write1(creation & 0x3); // 2 bits
}
/**
* Write a new style (R6 and later) Erlang ref to the stream.
- *
+ *
* @param node
* the nodename.
- *
+ *
* @param ids
* an array of arbitrary numbers. Only the low order 18 bits of
* the first number will be used. If the array contains only one
* number, an old style ref will be written instead. At most
* three numbers will be read from the array.
- *
+ *
* @param creation
* another arbitrary number. Only the low order 2 bits will be
* used.
- *
+ *
*/
public void write_ref(final String node, final int[] ids, final int creation) {
- int arity = ids.length;
- if (arity > 3) {
- arity = 3; // max 3 words in ref
- }
+ int arity = ids.length;
+ if (arity > 3) {
+ arity = 3; // max 3 words in ref
+ }
- if (arity == 1) {
- // use old method
- this.write_ref(node, ids[0], creation);
- } else {
- // r6 ref
- write1(OtpExternal.newRefTag);
+ if (arity == 1) {
+ // use old method
+ this.write_ref(node, ids[0], creation);
+ } else {
+ // r6 ref
+ write1(OtpExternal.newRefTag);
- // how many id values
- write2BE(arity);
+ // how many id values
+ write2BE(arity);
- write_atom(node);
+ write_atom(node);
- // note: creation BEFORE id in r6 ref
- write1(creation & 0x3); // 2 bits
+ // note: creation BEFORE id in r6 ref
+ write1(creation & 0x3); // 2 bits
- // first int gets truncated to 18 bits
- write4BE(ids[0] & 0x3ffff);
+ // first int gets truncated to 18 bits
+ write4BE(ids[0] & 0x3ffff);
- // remaining ones are left as is
- for (int i = 1; i < arity; i++) {
- write4BE(ids[i]);
- }
- }
+ // remaining ones are left as is
+ for (int i = 1; i < arity; i++) {
+ write4BE(ids[i]);
+ }
+ }
}
/**
* Write a string to the stream.
- *
+ *
* @param s
* the string to write.
*/
public void write_string(final String s) {
- final int len = s.length();
-
- switch (len) {
- case 0:
- write_nil();
- break;
- default:
- if (len <= 65535 && is8bitString(s)) { // 8-bit string
- try {
- final byte[] bytebuf = s.getBytes("ISO-8859-1");
- write1(OtpExternal.stringTag);
- write2BE(len);
- writeN(bytebuf);
- } catch (final UnsupportedEncodingException e) {
- write_nil(); // it should never ever get here...
- }
- } else { // unicode or longer, must code as list
- final int[] codePoints = OtpErlangString.stringToCodePoints(s);
- write_list_head(codePoints.length);
- for (final int codePoint : codePoints) {
- write_int(codePoint);
- }
- write_nil();
- }
- }
+ final int len = s.length();
+
+ switch (len) {
+ case 0:
+ write_nil();
+ break;
+ default:
+ if (len <= 65535 && is8bitString(s)) { // 8-bit string
+ try {
+ final byte[] bytebuf = s.getBytes("ISO-8859-1");
+ write1(OtpExternal.stringTag);
+ write2BE(len);
+ writeN(bytebuf);
+ } catch (final UnsupportedEncodingException e) {
+ write_nil(); // it should never ever get here...
+ }
+ } else { // unicode or longer, must code as list
+ final int[] codePoints = OtpErlangString.stringToCodePoints(s);
+ write_list_head(codePoints.length);
+ for (final int codePoint : codePoints) {
+ write_int(codePoint);
+ }
+ write_nil();
+ }
+ }
}
private boolean is8bitString(final String s) {
- for (int i = 0; i < s.length(); ++i) {
- final char c = s.charAt(i);
- if (c < 0 || c > 255) {
- return false;
- }
- }
- return true;
+ for (int i = 0; i < s.length(); ++i) {
+ final char c = s.charAt(i);
+ if (c < 0 || c > 255) {
+ return false;
+ }
+ }
+ return true;
}
/**
@@ -858,7 +864,7 @@ public class OtpOutputStream extends ByteArrayOutputStream {
* the Erlang term to write.
*/
public void write_compressed(final OtpErlangObject o) {
- write_compressed(o, Deflater.DEFAULT_COMPRESSION);
+ write_compressed(o, Deflater.DEFAULT_COMPRESSION);
}
/**
@@ -869,119 +875,119 @@ public class OtpOutputStream extends ByteArrayOutputStream {
* @param level
* the compression level (<tt>0..9</tt>)
*/
- public void write_compressed(final OtpErlangObject o, int level) {
- @SuppressWarnings("resource")
- final OtpOutputStream oos = new OtpOutputStream(o);
- /*
- * similar to erts_term_to_binary() in external.c:
- * We don't want to compress if compression actually increases the size.
- * Since compression uses 5 extra bytes (COMPRESSED tag + size), don't
- * compress if the original term is smaller.
- */
- if (oos.size() < 5) {
- // fast path for small terms
- try {
- oos.writeTo(this);
- // if the term is written as a compressed term, the output
- // stream is closed, so we do this here, too
- this.close();
- } catch (IOException e) {
- throw new java.lang.IllegalArgumentException(
- "Intermediate stream failed for Erlang object " + o);
- }
- } else {
- int startCount = super.count;
- // we need destCount bytes for an uncompressed term
- // -> if compression uses more, use the uncompressed term!
- int destCount = startCount + oos.size();
- this.fixedSize = destCount;
- Deflater def = new Deflater(level);
- final java.util.zip.DeflaterOutputStream dos = new java.util.zip.DeflaterOutputStream(
- this, def);
- try {
- write1(OtpExternal.compressedTag);
- write4BE(oos.size());
- oos.writeTo(dos);
- dos.close(); // note: closes this, too!
- } catch (final IllegalArgumentException e) {
- // discard further un-compressed data
- // -> if not called, there may be memory leaks!
- def.end();
- // could not make the value smaller than originally
- // -> reset to starting count, write uncompressed
- super.count = startCount;
- try {
- oos.writeTo(this);
- // if the term is written as a compressed term, the output
- // stream is closed, so we do this here, too
- this.close();
- } catch (IOException e2) {
- throw new java.lang.IllegalArgumentException(
- "Intermediate stream failed for Erlang object " + o);
- }
- } catch (final IOException e) {
- throw new java.lang.IllegalArgumentException(
- "Intermediate stream failed for Erlang object " + o);
- } finally {
- this.fixedSize = Integer.MAX_VALUE;
- try {
- dos.close();
- } catch (IOException e) {
- // ignore
+ public void write_compressed(final OtpErlangObject o, final int level) {
+ @SuppressWarnings("resource")
+ final OtpOutputStream oos = new OtpOutputStream(o);
+ /*
+ * similar to erts_term_to_binary() in external.c: We don't want to
+ * compress if compression actually increases the size. Since
+ * compression uses 5 extra bytes (COMPRESSED tag + size), don't
+ * compress if the original term is smaller.
+ */
+ if (oos.size() < 5) {
+ // fast path for small terms
+ try {
+ oos.writeTo(this);
+ // if the term is written as a compressed term, the output
+ // stream is closed, so we do this here, too
+ close();
+ } catch (final IOException e) {
+ throw new java.lang.IllegalArgumentException(
+ "Intermediate stream failed for Erlang object " + o);
+ }
+ } else {
+ final int startCount = super.count;
+ // we need destCount bytes for an uncompressed term
+ // -> if compression uses more, use the uncompressed term!
+ final int destCount = startCount + oos.size();
+ fixedSize = destCount;
+ final Deflater def = new Deflater(level);
+ final java.util.zip.DeflaterOutputStream dos = new java.util.zip.DeflaterOutputStream(
+ this, def);
+ try {
+ write1(OtpExternal.compressedTag);
+ write4BE(oos.size());
+ oos.writeTo(dos);
+ dos.close(); // note: closes this, too!
+ } catch (final IllegalArgumentException e) {
+ // discard further un-compressed data
+ // -> if not called, there may be memory leaks!
+ def.end();
+ // could not make the value smaller than originally
+ // -> reset to starting count, write uncompressed
+ super.count = startCount;
+ try {
+ oos.writeTo(this);
+ // if the term is written as a compressed term, the output
+ // stream is closed, so we do this here, too
+ close();
+ } catch (final IOException e2) {
+ throw new java.lang.IllegalArgumentException(
+ "Intermediate stream failed for Erlang object " + o);
+ }
+ } catch (final IOException e) {
+ throw new java.lang.IllegalArgumentException(
+ "Intermediate stream failed for Erlang object " + o);
+ } finally {
+ fixedSize = Integer.MAX_VALUE;
+ try {
+ dos.close();
+ } catch (final IOException e) {
+ // ignore
+ }
+ }
}
- }
- }
}
/**
* Write an arbitrary Erlang term to the stream.
- *
+ *
* @param o
* the Erlang term to write.
*/
public void write_any(final OtpErlangObject o) {
- // calls one of the above functions, depending on o
- o.encode(this);
+ // calls one of the above functions, depending on o
+ o.encode(this);
}
public void write_fun(final OtpErlangPid pid, final String module,
- final long old_index, final int arity, final byte[] md5,
- final long index, final long uniq, final OtpErlangObject[] freeVars) {
- if (arity == -1) {
- write1(OtpExternal.funTag);
- write4BE(freeVars.length);
- pid.encode(this);
- write_atom(module);
- write_long(index);
- write_long(uniq);
- for (final OtpErlangObject fv : freeVars) {
- fv.encode(this);
- }
- } else {
- write1(OtpExternal.newFunTag);
- final int saveSizePos = getPos();
- write4BE(0); // this is where we patch in the size
- write1(arity);
- writeN(md5);
- write4BE(index);
- write4BE(freeVars.length);
- write_atom(module);
- write_long(old_index);
- write_long(uniq);
- pid.encode(this);
- for (final OtpErlangObject fv : freeVars) {
- fv.encode(this);
- }
- poke4BE(saveSizePos, getPos() - saveSizePos);
- }
+ final long old_index, final int arity, final byte[] md5,
+ final long index, final long uniq, final OtpErlangObject[] freeVars) {
+ if (arity == -1) {
+ write1(OtpExternal.funTag);
+ write4BE(freeVars.length);
+ pid.encode(this);
+ write_atom(module);
+ write_long(index);
+ write_long(uniq);
+ for (final OtpErlangObject fv : freeVars) {
+ fv.encode(this);
+ }
+ } else {
+ write1(OtpExternal.newFunTag);
+ final int saveSizePos = getPos();
+ write4BE(0); // this is where we patch in the size
+ write1(arity);
+ writeN(md5);
+ write4BE(index);
+ write4BE(freeVars.length);
+ write_atom(module);
+ write_long(old_index);
+ write_long(uniq);
+ pid.encode(this);
+ for (final OtpErlangObject fv : freeVars) {
+ fv.encode(this);
+ }
+ poke4BE(saveSizePos, getPos() - saveSizePos);
+ }
}
public void write_external_fun(final String module, final String function,
- final int arity) {
- write1(OtpExternal.externalFunTag);
- write_atom(module);
- write_atom(function);
- write_long(arity);
+ final int arity) {
+ write1(OtpExternal.externalFunTag);
+ write_atom(module);
+ write_atom(function);
+ write_long(arity);
}
public void write_map_head(final int arity) {
generated by cgit v1.2.3 (git 2.25.1) at 2024-07-02 21:31:01 +0000