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author | Tom Tromey <tromey@redhat.com> | 2005-07-16 01:27:14 +0000 |
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committer | Tom Tromey <tromey@gcc.gnu.org> | 2005-07-16 01:27:14 +0000 |
commit | b0fa81eea9a270f23d6ad67ca7a6d25c18d20da1 (patch) | |
tree | 8762d1f992e2f725a6bde1ff966ed6f1e5f4f823 /libjava/java/io/CharArrayReader.java | |
parent | ea54b29342c8506acb4f858c68340c44b72e3532 (diff) | |
download | gcc-b0fa81eea9a270f23d6ad67ca7a6d25c18d20da1.zip gcc-b0fa81eea9a270f23d6ad67ca7a6d25c18d20da1.tar.gz gcc-b0fa81eea9a270f23d6ad67ca7a6d25c18d20da1.tar.bz2 |
Major merge with Classpath.
Removed many duplicate files.
* HACKING: Updated.x
* classpath: Imported new directory.
* standard.omit: New file.
* Makefile.in, aclocal.m4, configure: Rebuilt.
* sources.am: New file.
* configure.ac: Run Classpath configure script. Moved code around
to support. Disable xlib AWT peers (temporarily).
* Makefile.am (SUBDIRS): Added 'classpath'
(JAVAC): Removed.
(AM_CPPFLAGS): Added more -I options.
(BOOTCLASSPATH): Simplified.
Completely redid how sources are built.
Include sources.am.
* include/Makefile.am (tool_include__HEADERS): Removed jni.h.
* include/jni.h: Removed (in Classpath).
* scripts/classes.pl: Updated to look at built classes.
* scripts/makemake.tcl: New file.
* testsuite/libjava.jni/jni.exp (gcj_jni_compile_c_to_so): Added
-I options.
(gcj_jni_invocation_compile_c_to_binary): Likewise.
From-SVN: r102082
Diffstat (limited to 'libjava/java/io/CharArrayReader.java')
-rw-r--r-- | libjava/java/io/CharArrayReader.java | 305 |
1 files changed, 0 insertions, 305 deletions
diff --git a/libjava/java/io/CharArrayReader.java b/libjava/java/io/CharArrayReader.java deleted file mode 100644 index c14fa07..0000000 --- a/libjava/java/io/CharArrayReader.java +++ /dev/null @@ -1,305 +0,0 @@ -/* CharArrayReader.java -- Read an array of characters as a stream - Copyright (C) 1998, 2001, 2005 Free Software Foundation, Inc. - -This file is part of GNU Classpath. - -GNU Classpath is free software; you can redistribute it and/or modify -it under the terms of the GNU General Public License as published by -the Free Software Foundation; either version 2, or (at your option) -any later version. - -GNU Classpath is distributed in the hope that it will be useful, but -WITHOUT ANY WARRANTY; without even the implied warranty of -MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU -General Public License for more details. - -You should have received a copy of the GNU General Public License -along with GNU Classpath; see the file COPYING. If not, write to the -Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA -02110-1301 USA. - -Linking this library statically or dynamically with other modules is -making a combined work based on this library. Thus, the terms and -conditions of the GNU General Public License cover the whole -combination. - -As a special exception, the copyright holders of this library give you -permission to link this library with independent modules to produce an -executable, regardless of the license terms of these independent -modules, and to copy and distribute the resulting executable under -terms of your choice, provided that you also meet, for each linked -independent module, the terms and conditions of the license of that -module. An independent module is a module which is not derived from -or based on this library. If you modify this library, you may extend -this exception to your version of the library, but you are not -obligated to do so. If you do not wish to do so, delete this -exception statement from your version. */ - - -package java.io; - -/** - * This class permits an array of chars to be read as an input stream. - * - * @author Aaron M. Renn (arenn@urbanophile.com) - * @author Warren Levy (warrenl@cygnus.com) - */ -public class CharArrayReader extends Reader -{ - /** - * The array that contains the data supplied during read operations - */ - protected char[] buf; - - /** - * The array index of the next char to be read from the buffer - * <code>buf</code> - */ - protected int pos; - - /** - * The currently marked position in the stream. This defaults to 0, so a - * reset operation on the stream resets it to read from array index 0 in - * the buffer - even if the stream was initially created with an offset - * greater than 0 - */ - protected int markedPos; - - /** - * This indicates the maximum number of chars that can be read from this - * stream. It is the array index of the position after the last valid - * char in the buffer <code>buf</code> - */ - protected int count; - - /** - * Create a new CharArrayReader that will read chars from the passed - * in char array. This stream will read from the beginning to the end - * of the array. It is identical to calling an overloaded constructor - * as <code>CharArrayReader(buf, 0, buf.length)</code>. - * <p> - * Note that this array is not copied. If its contents are changed - * while this stream is being read, those changes will be reflected in the - * chars supplied to the reader. Please use caution in changing the - * contents of the buffer while this stream is open. - * - * @param buffer The char array buffer this stream will read from. - */ - public CharArrayReader(char[] buffer) - { - this(buffer, 0, buffer.length); - } - - /** - * Create a new CharArrayReader that will read chars from the passed - * in char array. This stream will read from position - * <code>offset</code> in the array for a length of - * <code>length</code> chars past <code>offset</code>. If the - * stream is reset to a position before <code>offset</code> then - * more than <code>length</code> chars can be read from the stream. - * The <code>length</code> value should be viewed as the array index - * one greater than the last position in the buffer to read. - * <p> - * Note that this array is not copied. If its contents are changed - * while this stream is being read, those changes will be reflected in the - * chars supplied to the reader. Please use caution in changing the - * contents of the buffer while this stream is open. - * - * @param buffer The char array buffer this stream will read from. - * @param offset The index into the buffer to start reading chars from - * @param length The number of chars to read from the buffer - */ - public CharArrayReader(char[] buffer, int offset, int length) - { - super(); - if (offset < 0 || length < 0 || offset > buffer.length) - throw new IllegalArgumentException(); - - buf = buffer; - - count = offset + length; - if (count > buf.length) - count = buf.length; - - pos = offset; - markedPos = pos; - } - - /** - * This method closes the stream. - */ - public void close() - { - synchronized (lock) - { - buf = null; - } - } - - /** - * This method sets the mark position in this stream to the current - * position. Note that the <code>readlimit</code> parameter in this - * method does nothing as this stream is always capable of - * remembering all the chars int it. - * <p> - * Note that in this class the mark position is set by default to - * position 0 in the stream. This is in constrast to some other - * stream types where there is no default mark position. - * - * @param readAheadLimit The number of chars this stream must - * remember. This parameter is ignored. - * - * @exception IOException If an error occurs - */ - public void mark(int readAheadLimit) throws IOException - { - synchronized (lock) - { - if (buf == null) - throw new IOException("Stream closed"); - // readAheadLimit is ignored per Java Class Lib. book, p. 318. - markedPos = pos; - } - } - - /** - * This method overrides the <code>markSupported</code> method in - * <code>Reader</code> in order to return <code>true</code> - - * indicating that this stream class supports mark/reset - * functionality. - * - * @return <code>true</code> to indicate that this class supports - * mark/reset. - */ - public boolean markSupported() - { - return true; - } - - /** - * This method reads one char from the stream. The <code>pos</code> - * counter is advanced to the next char to be read. The char read - * is returned as an int in the range of 0-65535. If the stream - * position is already at the end of the buffer, no char is read and - * a -1 is returned in order to indicate the end of the stream. - * - * @return The char read, or -1 if end of stream - */ - public int read() throws IOException - { - synchronized (lock) - { - if (buf == null) - throw new IOException("Stream closed"); - - if (pos < 0) - throw new ArrayIndexOutOfBoundsException(pos); - - if (pos < count) - return ((int) buf[pos++]) & 0xFFFF; - return -1; - } - } - - /** - * This method reads chars from the stream and stores them into a - * caller supplied buffer. It starts storing the data at index - * <code>offset</code> into the buffer and attempts to read - * <code>len</code> chars. This method can return before reading - * the number of chars requested if the end of the stream is - * encountered first. The actual number of chars read is returned. - * If no chars can be read because the stream is already at the end - * of stream position, a -1 is returned. - * <p> - * This method does not block. - * - * @param b The array into which the chars read should be stored. - * @param off The offset into the array to start storing chars - * @param len The requested number of chars to read - * - * @return The actual number of chars read, or -1 if end of stream. - */ - public int read(char[] b, int off, int len) throws IOException - { - synchronized (lock) - { - if (buf == null) - throw new IOException("Stream closed"); - - /* Don't need to check pos value, arraycopy will check it. */ - if (off < 0 || len < 0 || off + len > b.length) - throw new IndexOutOfBoundsException(); - - if (pos >= count) - return -1; - - int numChars = Math.min(count - pos, len); - System.arraycopy(buf, pos, b, off, numChars); - pos += numChars; - return numChars; - } - } - - /** - * Return true if more characters are available to be read. - * - * @return <code>true</code> to indicate that this stream is ready - * to be read. - * - * @specnote The JDK 1.3 API docs are wrong here. This method will - * return false if there are no more characters available. - */ - public boolean ready() throws IOException - { - if (buf == null) - throw new IOException("Stream closed"); - - return (pos < count); - } - - /** - * This method sets the read position in the stream to the mark - * point by setting the <code>pos</code> variable equal to the - * <code>mark</code> variable. Since a mark can be set anywhere in - * the array, the mark/reset methods int this class can be used to - * provide random search capabilities for this type of stream. - */ - public void reset() throws IOException - { - synchronized (lock) - { - if (buf == null) - throw new IOException("Stream closed"); - - pos = markedPos; - } - } - - /** - * This method attempts to skip the requested number of chars in the - * input stream. It does this by advancing the <code>pos</code> value by the - * specified number of chars. It this would exceed the length of the - * buffer, then only enough chars are skipped to position the stream at - * the end of the buffer. The actual number of chars skipped is returned. - * - * @param n The requested number of chars to skip - * - * @return The actual number of chars skipped. - */ - public long skip(long n) throws IOException - { - synchronized (lock) - { - if (buf == null) - throw new IOException("Stream closed"); - - // Even though the var numChars is a long, in reality it can never - // be larger than an int since the result of subtracting 2 positive - // ints will always fit in an int. Since we have to return a long - // anyway, numChars might as well just be a long. - long numChars = Math.min((long) (count - pos), n < 0 ? 0L : n); - pos += numChars; - return numChars; - } - } -} |