/*
* Copyright 2007-2008 Sun Microsystems, Inc. All Rights Reserved.
* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
*
* This code is free software; you can redistribute it and/or modify it
* under the terms of the GNU General Public License version 2 only, as
* published by the Free Software Foundation. Sun designates this
* particular file as subject to the "Classpath" exception as provided
* by Sun in the LICENSE file that accompanied this code.
*
* This code 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
* version 2 for more details (a copy is included in the LICENSE file that
* accompanied this code).
*
* You should have received a copy of the GNU General Public License version
* 2 along with this work; if not, write to the Free Software Foundation,
* Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
*
* Please contact Sun Microsystems, Inc., 4150 Network Circle, Santa Clara,
* CA 95054 USA or visit www.sun.com if you need additional information or
* have any questions.
*/
package com.sun.tools.javap;
import java.io.PrintWriter;
import com.sun.tools.classfile.AttributeException;
import com.sun.tools.classfile.ConstantPoolException;
import com.sun.tools.classfile.DescriptorException;
/*
* A writer similar to a PrintWriter but which does not hide exceptions.
* The standard print calls are line-buffered; report calls write messages directly.
*
* <p><b>This is NOT part of any API supported by Sun Microsystems. If
* you write code that depends on this, you do so at your own risk.
* This code and its internal interfaces are subject to change or
* deletion without notice.</b>
*/
public class BasicWriter {
protected BasicWriter(Context context) {
lineWriter = LineWriter.instance(context);
out = context.get(PrintWriter.class);
messages = context.get(Messages.class);
if (messages == null)
throw new AssertionError();
}
protected void print(String s) {
lineWriter.print(s);
}
protected void print(Object o) {
lineWriter.print(o == null ? null : o.toString());
}
protected void println() {
lineWriter.println();
}
protected void println(String s) {
lineWriter.print(s);
lineWriter.println();
}
protected void println(Object o) {
lineWriter.print(o == null ? null : o.toString());
lineWriter.println();
}
protected String report(AttributeException e) {
out.println("Error: " + e.getMessage()); // i18n?
return "???";
}
protected String report(ConstantPoolException e) {
out.println("Error: " + e.getMessage()); // i18n?
return "???";
}
protected String report(DescriptorException e) {
out.println("Error: " + e.getMessage()); // i18n?
return "???";
}
protected String report(String msg) {
out.println("Error: " + msg); // i18n?
return "???";
}
protected String space(int w) {
if (w < spaces.length && spaces[w] != null)
return spaces[w];
StringBuilder sb = new StringBuilder();
for (int i = 0; i < w; i++)
sb.append(" ");
String s = sb.toString();
if (w < spaces.length)
spaces[w] = s;
return s;
}
private String[] spaces = new String[80];
private LineWriter lineWriter;
private PrintWriter out;
protected Messages messages;
private static class LineWriter {
static LineWriter instance(Context context) {
LineWriter instance = context.get(LineWriter.class);
if (instance == null)
instance = new LineWriter(context);
return instance;
}
protected LineWriter(Context context) {
context.put(LineWriter.class, this);
out = context.get(PrintWriter.class);
buffer = new StringBuilder();
}
protected void print(String s) {
if (s == null)
s = "null";
for (int i = 0; i < s.length(); i++) {
char c = s.charAt(i);
if (c == '\n') {
println();
} else {
buffer.append(c);
}
}
}
protected void println() {
out.println(buffer);
buffer.setLength(0);
}
private PrintWriter out;
private StringBuilder buffer;
}
}