Ordinarily this method stores characters from the given array into
* this stream's buffer, flushing the buffer to the underlying stream as
* needed. If the requested length is at least as large as the buffer,
* however, then this method will flush the buffer and write the characters
* directly to the underlying stream. Thus redundant
* DiscardableBufferedWriters will not copy data unnecessarily.
*
* @param cbuf A character array
* @param off Offset from which to start reading characters
* @param len Number of characters to write
*
*/
public void write(char cbuf[], int off, int len)
throws IOException
{
synchronized (lock) {
ensureOpen();
if (bufferSize == 0) {
initOut();
out.write(cbuf, off, len);
return;
}
if ((off < 0) || (off > cbuf.length) || (len < 0) ||
((off + len) > cbuf.length) || ((off + len) < 0)) {
throw new IndexOutOfBoundsException();
} else if (len == 0) {
return;
}
if (len >= bufferSize) {
/* If the request length exceeds the size of the output buffer,
flush the buffer and then write the data directly. In this
way buffered streams will cascade harmlessly. */
if (autoFlush)
flushBuffer();
else
bufferOverflow();
initOut();
out.write(cbuf, off, len);
return;
}
int b = off, t = off + len;
while (b < t) {
int d = min(bufferSize - nextChar, t - b);
System.arraycopy(cbuf, b, cb, nextChar, d);
b += d;
nextChar += d;
if (nextChar >= bufferSize)
if (autoFlush)
flushBuffer();
else
bufferOverflow();
}
}
}
/**
* Write an array of characters. This method cannot be inherited from the
* Writer class because it must suppress I/O exceptions.
*/
public void write(char buf[]) throws IOException {
write(buf, 0, buf.length);
}
/**
* Write a portion of a String.
*
* @param s String to be written
* @param off Offset from which to start reading characters
* @param len Number of characters to be written
*
*/
public void write(String s, int off, int len) throws IOException {
synchronized (lock) {
ensureOpen();
if (bufferSize == 0) {
initOut();
out.write(s, off, len);
return;
}
int b = off, t = off + len;
while (b < t) {
int d = min(bufferSize - nextChar, t - b);
s.getChars(b, b + d, cb, nextChar);
b += d;
nextChar += d;
if (nextChar >= bufferSize)
if (autoFlush)
flushBuffer();
else
bufferOverflow();
}
}
}
/**
* Write a string. This method cannot be inherited from the Writer class
* because it must suppress I/O exceptions.
*/
public void write(String s) throws IOException {
write(s, 0, s.length());
}
static String lineSeparator = System.getProperty("line.separator");
/**
* Write a line separator. The line separator string is defined by the
* system property line.separator, and is not necessarily a single
* newline ('\n') character.
*
* @exception IOException If an I/O error occurs
*/
public void newLine() throws IOException {
synchronized (lock) {
write(lineSeparator);
}
}
/* Methods that do not terminate lines */
/**
* Print a boolean value. The string produced by {@link
* java.lang.String#valueOf(boolean)} is translated into bytes
* according to the platform's default character encoding, and these bytes
* are written in exactly the manner of the {@link
* #write(int)} method.
*
* @param b The boolean to be printed
*/
public void print(boolean b) throws IOException {
write(b ? "true" : "false");
}
/**
* Print a character. The character is translated into one or more bytes
* according to the platform's default character encoding, and these bytes
* are written in exactly the manner of the {@link
* #write(int)} method.
*
* @param c The char to be printed
*/
public void print(char c) throws IOException {
write(String.valueOf(c));
}
/**
* Print an integer. The string produced by {@link
* java.lang.String#valueOf(int)} is translated into bytes according
* to the platform's default character encoding, and these bytes are
* written in exactly the manner of the {@link #write(int)}
* method.
*
* @param i The int to be printed
* @see java.lang.Integer#toString(int)
*/
public void print(int i) throws IOException {
write(String.valueOf(i));
}
/**
* Print a long integer. The string produced by {@link
* java.lang.String#valueOf(long)} is translated into bytes
* according to the platform's default character encoding, and these bytes
* are written in exactly the manner of the {@link #write(int)}
* method.
*
* @param l The long to be printed
* @see java.lang.Long#toString(long)
*/
public void print(long l) throws IOException {
write(String.valueOf(l));
}
/**
* Print a floating-point number. The string produced by {@link
* java.lang.String#valueOf(float)} is translated into bytes
* according to the platform's default character encoding, and these bytes
* are written in exactly the manner of the {@link #write(int)}
* method.
*
* @param f The float to be printed
* @see java.lang.Float#toString(float)
*/
public void print(float f) throws IOException {
write(String.valueOf(f));
}
/**
* Print a double-precision floating-point number. The string produced by
* {@link java.lang.String#valueOf(double)} is translated into
* bytes according to the platform's default character encoding, and these
* bytes are written in exactly the manner of the {@link
* #write(int)} method.
*
* @param d The double to be printed
* @see java.lang.Double#toString(double)
*/
public void print(double d) throws IOException {
write(String.valueOf(d));
}
/**
* Print an array of characters. The characters are converted into bytes
* according to the platform's default character encoding, and these bytes
* are written in exactly the manner of the {@link #write(int)}
* method.
*
* @param s The array of chars to be printed
*
* @throws NullPointerException If s is null
*/
public void print(char s[]) throws IOException {
write(s);
}
/**
* Print a string. If the argument is null then the string
* "null" is printed. Otherwise, the string's characters are
* converted into bytes according to the platform's default character
* encoding, and these bytes are written in exactly the manner of the
* {@link #write(int)} method.
*
* @param s The String to be printed
*/
public void print(String s) throws IOException {
if (s == null) {
s = "null";
}
write(s);
}
/**
* Print an object. The string produced by the {@link
* java.lang.String#valueOf(Object)} method is translated into bytes
* according to the platform's default character encoding, and these bytes
* are written in exactly the manner of the {@link #write(int)}
* method.
*
* @param obj The Object to be printed
* @see java.lang.Object#toString()
*/
public void print(Object obj) throws IOException {
write(String.valueOf(obj));
}
/* Methods that do terminate lines */
/**
* Terminate the current line by writing the line separator string. The
* line separator string is defined by the system property
* line.separator, and is not necessarily a single newline
* character ('\n').
*
* Need to change this from PrintWriter because the default
* println() writes to the sink directly instead of through the
* write method...
*/
public void println() throws IOException {
newLine();
}
/**
* Print a boolean value and then terminate the line. This method behaves
* as though it invokes {@link #print(boolean)} and then
* {@link #println()}.
*/
public void println(boolean x) throws IOException {
synchronized (lock) {
print(x);
println();
}
}
/**
* Print a character and then terminate the line. This method behaves as
* though it invokes {@link #print(char)} and then {@link
* #println()}.
*/
public void println(char x) throws IOException {
synchronized (lock) {
print(x);
println();
}
}
/**
* Print an integer and then terminate the line. This method behaves as
* though it invokes {@link #print(int)} and then {@link
* #println()}.
*/
public void println(int x) throws IOException {
synchronized (lock) {
print(x);
println();
}
}
/**
* Print a long integer and then terminate the line. This method behaves
* as though it invokes {@link #print(long)} and then
* {@link #println()}.
*/
public void println(long x) throws IOException {
synchronized (lock) {
print(x);
println();
}
}
/**
* Print a floating-point number and then terminate the line. This method
* behaves as though it invokes {@link #print(float)} and then
* {@link #println()}.
*/
public void println(float x) throws IOException {
synchronized (lock) {
print(x);
println();
}
}
/**
* Print a double-precision floating-point number and then terminate the
* line. This method behaves as though it invokes {@link
* #print(double)} and then {@link #println()}.
*/
public void println(double x) throws IOException {
synchronized (lock) {
print(x);
println();
}
}
/**
* Print an array of characters and then terminate the line. This method
* behaves as though it invokes {@link #print(char[])} and then
* {@link #println()}.
*/
public void println(char x[]) throws IOException {
synchronized (lock) {
print(x);
println();
}
}
/**
* Print a String and then terminate the line. This method behaves as
* though it invokes {@link #print(String)} and then
* {@link #println()}.
*/
public void println(String x) throws IOException {
synchronized (lock) {
print(x);
println();
}
}
/**
* Print an Object and then terminate the line. This method behaves as
* though it invokes {@link #print(Object)} and then
* {@link #println()}.
*/
public void println(Object x) throws IOException {
synchronized (lock) {
print(x);
println();
}
}
/** Package-level access.
*/
void recycle() {
flushed = false;
nextChar = 0;
}
}