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SafePrintWriter.java
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197 lines (164 loc) · 4.73 KB
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import java.io.*;
public class SafePrintWriter extends Writer {
protected Writer out;
private boolean autoFlush = false;
private String lineSeparator;
private boolean closed = false;
public SafePrintWriter(Writer out, String lineSeparator) {
this(out, false, lineSeparator);
}
public SafePrintWriter(Writer out, char lineSeparator) {
this(out, false, String.valueOf(lineSeparator));
}
public SafePrintWriter(Writer out, boolean autoFlush, String lineSeparator) {
super(out);
this.out = out;
this.autoFlush = autoFlush;
if (lineSeparator == null) {
throw new NullPointerException("Null line separator");
}
this.lineSeparator = lineSeparator;
}
public SafePrintWriter(OutputStream out, boolean autoFlush,
String encoding, String lineSeparator)
throws UnsupportedEncodingException {
this(new OutputStreamWriter(out, encoding), autoFlush, lineSeparator);
}
public void flush() throws IOException {
synchronized (lock) {
if (closed) throw new IOException("Stream closed");
out.flush();
}
}
public void close() throws IOException {
try {
this.flush();
} catch (IOException ex) {
}
synchronized (lock) {
out.close();
this.closed = true;
}
}
public void write(int c) throws IOException {
synchronized (lock) {
if (closed) throw new IOException("Stream closed");
out.write(c);
}
}
public void write(char[] text, int offset, int length) throws IOException {
synchronized (lock) {
if (closed) throw new IOException("Stream closed");
out.write(text, offset, length);
}
}
public void write(char[] text) throws IOException {
synchronized (lock) {
if (closed) throw new IOException("Stream closed");
out.write(text, 0, text.length);
}
}
public void write(String s, int offset, int length) throws IOException {
synchronized (lock) {
if (closed) throw new IOException("Stream closed");
out.write(s, offset, length);
}
}
public void print(boolean b) throws IOException {
if (b) this.write("true");
else this.write("false");
}
public void println(boolean b) throws IOException {
synchronized(lock) {
this.print(b);
this.write(lineSeparator);
}
if (autoFlush) out.flush();
}
public void print(char c) throws IOException {
this.write(String.valueOf(c));
}
public void println(char c) throws IOException {
synchronized(lock) {
this.print(c);
this.write(lineSeparator);
}
if (autoFlush) out.flush();
}
public void print(int i) throws IOException {
this.write(String.valueOf(i));
}
public void println(int i) throws IOException {
synchronized(lock) {
this.print(i);
this.write(lineSeparator);
}
if (autoFlush) out.flush();
}
public void print(long l) throws IOException {
this.write(String.valueOf(l));
}
public void println(long l) throws IOException {
synchronized(lock) {
this.print(l);
this.write(lineSeparator);
}
if (autoFlush) out.flush();
}
public void print(float f) throws IOException {
this.write(String.valueOf(f));
}
public void println(float f) throws IOException {
synchronized(lock) {
this.print(f);
this.write(lineSeparator);
}
if (autoFlush) out.flush();
}
public void print(double d) throws IOException {
this.write(String.valueOf(d));
}
public void println(double d) throws IOException {
synchronized(lock) {
this.print(d);
this.write(lineSeparator);
}
if (autoFlush) out.flush();
}
public void print(char[] text) throws IOException {
this.write(text);
}
public void println(char[] text) throws IOException {
synchronized(lock) {
this.print(text);
this.write(lineSeparator);
}
if (autoFlush) out.flush();
}
public void print(String s) throws IOException {
if (s == null) this.write("null");
else this.write(s);
}
public void println(String s) throws IOException {
synchronized(lock) {
this.print(s);
this.write(lineSeparator);
}
if (autoFlush) out.flush();
}
public void print(Object o) throws IOException {
if (o == null) this.write("null");
else this.write(o.toString());
}
public void println(Object o) throws IOException {
synchronized(lock) {
this.print(o);
this.write(lineSeparator);
}
if (autoFlush) out.flush();
}
public void println() throws IOException {
this.write(lineSeparator);
if (autoFlush) out.flush();
}
}