BufferedReader.java, [...]: Merged from classpath.
2003-03-18 Michael Koch <konqueror@gmx.de> * java/io/BufferedReader.java, java/io/BufferedWriter.java, java/io/ByteArrayOutputStream.java, java/io/FileFilter.java, java/io/FilePermission.java, java/io/FileReader.java, java/io/FileWriter.java, java/io/FilenameFilter.java, java/io/FilterInputStream.java, java/io/FilterOutputStream.java, java/io/FilterReader.java, java/io/FilterWriter.java, java/io/ObjectInput.java, java/io/ObjectInputValidation.java, java/io/ObjectOutput.java, java/io/ObjectStreamField.java, java/io/PipedInputStream.java, java/io/PipedReader.java, java/io/PrintWriter.java, java/io/PushbackReader.java, java/io/Reader.java, java/io/SerializablePermission.java, java/io/StringReader.java, java/io/Writer.java: Merged from classpath. From-SVN: r64525
This commit is contained in:
Michael Koch
Michael Koch
parent
61f1ed592c
commit
f4f5d1d621
25 changed files with 1138 additions and 1104 deletions
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@ -1,5 +1,5 @@
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/* Writer.java -- Base class for character output streams
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Copyright (C) 1998, 1999, 2001 Free Software Foundation, Inc.
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Copyright (C) 1998, 1999, 2001, 2003 Free Software Foundation, Inc.
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This file is part of GNU Classpath.
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@ -55,168 +55,161 @@ package java.io;
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*/
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public abstract class Writer
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{
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/**
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* This is the object used to synchronize criticial code sections for
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* thread safety. Subclasses should use this field instead of using
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* synchronized methods or explicity synchronizations on <code>this</code>
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*/
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protected Object lock;
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/*************************************************************************/
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/*************************************************************************/
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/**
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* This is the object used to synchronize criticial code sections for
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* thread safety. Subclasses should use this field instead of using
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* synchronized methods or explicity synchronizations on <code>this</code>
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*/
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protected Object lock;
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/*
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* Constructors
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*/
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/*************************************************************************/
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/**
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* This is the default no-argument constructor for this class. This method
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* will set up the class to synchronize criticial sections on itself.
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*/
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protected Writer()
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{
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lock = this;
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}
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/*
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* Constructors
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*/
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/*************************************************************************/
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/**
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* This is the default no-argument constructor for this class. This method
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* will set up the class to synchronize criticial sections on itself.
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*/
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protected
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Writer()
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{
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lock = this;
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}
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/**
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* This method initializes a <code>Writer</code> that will synchronize
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* on the specified <code>Object</code>.
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*
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* @param obj The <code>Object</code> to use for synchronizing critical
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* sections
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*/
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protected Writer(Object lock)
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{
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this.lock = lock;
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}
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/*************************************************************************/
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/*************************************************************************/
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/**
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* This method initializes a <code>Writer</code> that will synchronize
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* on the specified <code>Object</code>.
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*
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* @param obj The <code>Object</code> to use for synchronizing critical
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* sections
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*/
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protected
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Writer(Object lock)
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{
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this.lock = lock;
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}
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/*
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* Instance Methods
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*/
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/*************************************************************************/
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/**
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* This method forces any data that may have been buffered to be written
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* to the underlying output device. Please note that the host environment
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* might perform its own buffering unbeknowst to Java. In that case, a
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* write made (for example, to a disk drive) might be cached in OS
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* buffers instead of actually being written to disk.
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*
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* @exception IOException If an error occurs
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*/
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public abstract void flush() throws IOException;
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/*
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* Instance Methods
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*/
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/*************************************************************************/
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/**
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* This method forces any data that may have been buffered to be written
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* to the underlying output device. Please note that the host environment
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* might perform its own buffering unbeknowst to Java. In that case, a
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* write made (for example, to a disk drive) might be cached in OS
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* buffers instead of actually being written to disk.
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*
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* @exception IOException If an error occurs
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*/
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public abstract void
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flush() throws IOException;
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/**
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* This method closes the stream. Any internal or native resources
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* associated
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* with this stream are freed. Any subsequent attempt to access the stream
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* might throw an exception.
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* <p>
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* This method in this class does nothing.
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*
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* @exception IOException If an error occurs
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*/
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public abstract void close() throws IOException;
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/*************************************************************************/
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/*************************************************************************/
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/**
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* This method closes the stream. Any internal or native resources associated
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* with this stream are freed. Any subsequent attempt to access the stream
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* might throw an exception.
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* <p>
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* This method in this class does nothing.
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*
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* @exception IOException If an error occurs
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*/
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public abstract void
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close() throws IOException;
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/**
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* This method writes a single char to the output stream.
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*
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* @param b The char to be written to the output stream, passed as an int
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*
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* @exception IOException If an error occurs
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*/
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public void write(int b) throws IOException
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{
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char[] buf = new char[1];
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/*************************************************************************/
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buf[0] = (char)b;
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write(buf, 0, buf.length);
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}
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/**
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* This method writes a single char to the output stream.
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*
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* @param b The char to be written to the output stream, passed as an int
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*
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* @exception IOException If an error occurs
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*/
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public void
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write(int b) throws IOException
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{
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char[] buf = new char[1];
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/*************************************************************************/
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buf[0] = (char)b;
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write(buf, 0, buf.length);
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}
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/**
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* This method all the writes char from the passed array to the output
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* stream. This method is equivalent to
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* <code>write(buf, 0, buf.length)</code> which
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* is exactly how it is implemented in this class.
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*
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* @param buf The array of char to write
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*
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* @exception IOException If an error occurs
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*/
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public void write(char[] buf) throws IOException
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{
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write(buf, 0, buf.length);
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}
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/*************************************************************************/
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/*************************************************************************/
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/**
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* This method all the writes char from the passed array to the output stream.
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* This method is equivalent to <code>write(buf, 0, buf.length)</code> which
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* is exactly how it is implemented in this class.
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*
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* @param buf The array of char to write
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*
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* @exception IOException If an error occurs
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*/
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public void
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write(char[] buf) throws IOException
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{
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write(buf, 0, buf.length);
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}
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/**
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* This method writes <code>len</code> char from the specified array
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* <code>buf</code> starting at index <code>offset</code> into the array.
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* <p>
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* Subclasses must provide an implementation of this abstract method.
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*
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* @param buf The array of char to write from
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* @param offset The index into the array to start writing from
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* @param len The number of char to write
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*
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* @exception IOException If an error occurs
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*/
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public abstract void write(char[] buf, int offset, int len)
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throws IOException;
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/*************************************************************************/
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/*************************************************************************/
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/**
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* This method writes <code>len</code> char from the specified array
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* <code>buf</code> starting at index <code>offset</code> into the array.
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* <p>
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* Subclasses must provide an implementation of this abstract method.
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*
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* @param buf The array of char to write from
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* @param offset The index into the array to start writing from
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* @param len The number of char to write
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*
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* @exception IOException If an error occurs
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*/
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public abstract void
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write(char[] buf, int offset, int len) throws IOException;
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/**
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* This method writes all the characters in a <code>String</code> to the
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* output.
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*
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* @param str The <code>String</code> whose chars are to be written.
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*
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* @param IOException If an error occurs
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*/
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public void write(String str) throws IOException
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{
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write(str, 0, str.length());
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}
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/*************************************************************************/
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/*************************************************************************/
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/**
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* This method writes all the characters in a <code>String</code> to the
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* output.
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*
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* @param str The <code>String</code> whose chars are to be written.
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*
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* @param IOException If an error occurs
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*/
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public void
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write(String str) throws IOException
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{
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write(str, 0, str.length());
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}
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/**
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* This method writes <code>len</code> chars from the <code>String</code>
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* starting at position <code>offset</code>.
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*
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* @param str The <code>String</code> that is to be written
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* @param offset The character offset into the <code>String</code> to start
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* writing from
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* @param len The number of chars to write
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*
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* @exception IOException If an error occurs
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*/
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public void write(String str, int offset, int len) throws IOException
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{
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// FIXME - for libgcj re-write using native code to not require
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// copied buffer.
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char[] buf = new char[len];
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/*************************************************************************/
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/**
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* This method writes <code>len</code> chars from the <code>String</code>
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* starting at position <code>offset</code>.
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*
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* @param str The <code>String</code> that is to be written
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* @param offset The character offset into the <code>String</code> to start
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* writing from
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* @param len The number of chars to write
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*
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* @exception IOException If an error occurs
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*/
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public void
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write(String str, int offset, int len) throws IOException
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{
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// FIXME - for libgcj re-write using native code to not require copied buffer.
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char[] buf = new char[len];
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str.getChars(offset, offset + len, buf, 0);
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write(buf, 0, len);
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}
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str.getChars(offset, offset + len, buf, 0);
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write(buf, 0, len);
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}
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} // class Writer
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