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Remerge with Classpath (changes by Bryce McKinlay <bryce@albatross.co.nz>)

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Remerge with Classpath
    (changes by Bryce McKinlay  <bryce@albatross.co.nz>)
    * java/io/DataInputStream.java (readBoolean): Use convertToBoolean().
    (readByte): Use convertToByte().
    (readChar): Use convertToChar().
    (readInt): Use convertToInt().
    (readLong): Use convertToLong().
    (readShort): Use convertToShort().
    (readUnsignedByte): Use convertToUnsignedByte().
    (readUnsignedShort): Use convertToUnsignedShort().
    (readUTF): Use convertToUTF().

    (convertToBoolean): Resurrected.
    (convertToByte): Ditto.
    (convertToChar): Ditto.
    (convertToInt): Ditto.
    (convertToLong): Ditto.
    (convertToShort): Ditto.
    (convertToUnsignedByte): Ditto.
    (convertToUnsignedShort): Ditto.
    (convertToUTF): Ditto.

From-SVN: r39800
This commit is contained in:
Mark Wielaard 2001-02-17 15:09:46 +00:00 • committed by Mark Wielaard
parent a7e96ed41a
commit 3f57b973f3
2 changed files with 135 additions and 80 deletions
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24
libjava/ChangeLog
View file

@ -1,3 +1,27 @@
2001-02-17 Mark Wielaard <mark@klomp.org>
Remerge with Classpath
(changes by Bryce McKinlay <bryce@albatross.co.nz>)
* java/io/DataInputStream.java (readBoolean): Use convertToBoolean().
(readByte): Use convertToByte().
(readChar): Use convertToChar().
(readInt): Use convertToInt().
(readLong): Use convertToLong().
(readShort): Use convertToShort().
(readUnsignedByte): Use convertToUnsignedByte().
(readUnsignedShort): Use convertToUnsignedShort().
(readUTF): Use convertToUTF().
(convertToBoolean): Resurrected.
(convertToByte): Ditto.
(convertToChar): Ditto.
(convertToInt): Ditto.
(convertToLong): Ditto.
(convertToShort): Ditto.
(convertToUnsignedByte): Ditto.
(convertToUnsignedShort): Ditto.
(convertToUTF): Ditto.
2001-02-17 Mark Wielaard <mark@klomp.org>
* HACKING: new file

191
libjava/java/io/DataInputStream.java
View file

@ -51,6 +51,9 @@ public class DataInputStream extends FilterInputStream implements DataInput
// handled correctly. If set, readLine() will ignore the first char it sees
// if that char is a '\n'
boolean ignoreInitialNewline = false;
// Byte buffer, used to make primitive read calls more efficient.
byte[] buf = new byte[8];
/**
* This constructor initializes a new <code>DataInputStream</code>
@ -120,10 +123,7 @@ public class DataInputStream extends FilterInputStream implements DataInput
*/
public final boolean readBoolean() throws IOException
{
int b = in.read();
if (b < 0)
throw new EOFException();
return (b != 0);
return convertToBoolean(in.read());
}
/**
@ -143,11 +143,7 @@ public class DataInputStream extends FilterInputStream implements DataInput
*/
public final byte readByte() throws IOException
{
int i = in.read();
if (i < 0)
throw new EOFException();
return (byte) i;
return convertToByte(in.read());
}
/**
@ -177,11 +173,10 @@ public class DataInputStream extends FilterInputStream implements DataInput
*/
public final char readChar() throws IOException
{
int a = in.read();
int b = in.read();
if (b < 0)
int count = in.read (buf, 0, 2);
if (count < 2)
throw new EOFException();
return (char) ((a << 8) | (b & 0xff));
return convertToChar(buf);
}
/**
@ -308,15 +303,10 @@ public class DataInputStream extends FilterInputStream implements DataInput
*/
public final int readInt() throws IOException
{
int a = in.read();
int b = in.read();
int c = in.read();
int d = in.read();
if (d < 0)
int count = in.read (buf, 0, 4);
if (count < 4)
throw new EOFException();
return (((a & 0xff) << 24) | ((b & 0xff) << 16) |
((c & 0xff) << 8) | (d & 0xff));
return convertToInt(buf);
}
/**
@ -463,25 +453,10 @@ public class DataInputStream extends FilterInputStream implements DataInput
*/
public final long readLong() throws IOException
{
int a = in.read();
int b = in.read();
int c = in.read();
int d = in.read();
int e = in.read();
int f = in.read();
int g = in.read();
int h = in.read();
if (h < 0)
int count = in.read(buf, 0, 8);
if (count < 8)
throw new EOFException();
return (((long)(a & 0xff) << 56) |
((long)(b & 0xff) << 48) |
((long)(c & 0xff) << 40) |
((long)(d & 0xff) << 32) |
((long)(e & 0xff) << 24) |
((long)(f & 0xff) << 16) |
((long)(g & 0xff) << 8) |
((long)(h & 0xff)));
return convertToLong(buf);
}
/**
@ -513,11 +488,10 @@ public class DataInputStream extends FilterInputStream implements DataInput
*/
public final short readShort() throws IOException
{
int a = in.read();
int b = in.read();
if (b < 0)
int count = in.read(buf, 0, 2);
if (count < 2)
throw new EOFException();
return (short) ((a << 8) | (b & 0xff));
return convertToShort(buf);
}
/**
@ -538,11 +512,7 @@ public class DataInputStream extends FilterInputStream implements DataInput
*/
public final int readUnsignedByte() throws IOException
{
int i = in.read();
if (i < 0)
throw new EOFException();
return (i & 0xFF);
return convertToUnsignedByte(in.read());
}
/**
@ -572,11 +542,10 @@ public class DataInputStream extends FilterInputStream implements DataInput
*/
public final int readUnsignedShort() throws IOException
{
int a = in.read();
int b = in.read();
if (b < 0)
int count = in.read(buf, 0, 2);
if (count < 2)
throw new EOFException();
return (((a & 0xff) << 8) | (b & 0xff));
return convertToUnsignedShort(buf);
}
/**
@ -668,41 +637,14 @@ public class DataInputStream extends FilterInputStream implements DataInput
{
final int UTFlen = in.readUnsignedShort();
byte[] buf = new byte[UTFlen];
StringBuffer strbuf = new StringBuffer();
// This blocks until the entire string is available rather than
// doing partial processing on the bytes that are available and then
// blocking. An advantage of the latter is that Exceptions
// could be thrown earlier. The former is a bit cleaner.
in.readFully(buf, 0, UTFlen);
for (int i = 0; i < UTFlen; )
{
if ((buf[i] & 0x80) == 0) // bit pattern 0xxxxxxx
strbuf.append((char) (buf[i++] & 0xFF));
else if ((buf[i] & 0xE0) == 0xC0) // bit pattern 110xxxxx
{
if (i + 1 >= UTFlen || (buf[i+1] & 0xC0) != 0x80)
throw new UTFDataFormatException();
strbuf.append((char) (((buf[i++] & 0x1F) << 6) |
(buf[i++] & 0x3F)));
}
else if ((buf[i] & 0xF0) == 0xE0) // bit pattern 1110xxxx
{
if (i + 2 >= UTFlen ||
(buf[i+1] & 0xC0) != 0x80 || (buf[i+2] & 0xC0) != 0x80)
throw new UTFDataFormatException();
strbuf.append((char) (((buf[i++] & 0x0F) << 12) |
((buf[i++] & 0x3F) << 6) |
(buf[i++] & 0x3F)));
}
else // must be ((buf[i] & 0xF0) == 0xF0 || (buf[i] & 0xC0) == 0x80)
throw new UTFDataFormatException(); // bit patterns 1111xxxx or
// 10xxxxxx
}
return strbuf.toString();
return convertFromUTF(buf);
}
/**
@ -733,4 +675,93 @@ public class DataInputStream extends FilterInputStream implements DataInput
}
return n;
}
static boolean convertToBoolean(int b) throws EOFException
{
if (b < 0)
throw new EOFException();
return (b != 0);
}
static byte convertToByte(int i) throws EOFException
{
if (i < 0)
throw new EOFException();
return (byte) i;
}
static int convertToUnsignedByte(int i) throws EOFException
{
if (i < 0)
throw new EOFException();
return (i & 0xFF);
}
static char convertToChar(byte[] buf)
{
return (char) ((buf[0] << 8) | (buf[1] & 0xff));
}
static short convertToShort(byte[] buf)
{
return (short) ((buf[0] << 8) | (buf[1] & 0xff));
}
static int convertToUnsignedShort(byte[] buf)
{
return (((buf[0] & 0xff) << 8) | (buf[1] & 0xff));
}
static int convertToInt(byte[] buf)
{
return (((buf[0] & 0xff) << 24) | ((buf[1] & 0xff) << 16) |
((buf[2] & 0xff) << 8) | (buf[3] & 0xff));
}
static long convertToLong(byte[] buf)
{
return (((long)(buf[0] & 0xff) << 56) |
((long)(buf[1] & 0xff) << 48) |
((long)(buf[2] & 0xff) << 40) |
((long)(buf[3] & 0xff) << 32) |
((long)(buf[4] & 0xff) << 24) |
((long)(buf[5] & 0xff) << 16) |
((long)(buf[6] & 0xff) << 8) |
((long)(buf[7] & 0xff)));
}
static String convertFromUTF(byte[] buf)
throws EOFException, UTFDataFormatException
{
StringBuffer strbuf = new StringBuffer();
for (int i = 0; i < buf.length; )
{
if ((buf[i] & 0x80) == 0) // bit pattern 0xxxxxxx
strbuf.append((char) (buf[i++] & 0xFF));
else if ((buf[i] & 0xE0) == 0xC0) // bit pattern 110xxxxx
{
if (i + 1 >= buf.length || (buf[i+1] & 0xC0) != 0x80)
throw new UTFDataFormatException();
strbuf.append((char) (((buf[i++] & 0x1F) << 6) |
(buf[i++] & 0x3F)));
}
else if ((buf[i] & 0xF0) == 0xE0) // bit pattern 1110xxxx
{
if (i + 2 >= buf.length ||
(buf[i+1] & 0xC0) != 0x80 || (buf[i+2] & 0xC0) != 0x80)
throw new UTFDataFormatException();
strbuf.append((char) (((buf[i++] & 0x0F) << 12) |
((buf[i++] & 0x3F) << 6) |
(buf[i++] & 0x3F)));
}
else // must be ((buf[i] & 0xF0) == 0xF0 || (buf[i] & 0xC0) == 0x80)
throw new UTFDataFormatException(); // bit patterns 1111xxxx or
// 10xxxxxx
}
return strbuf.toString();
}
}