1.1 --- /dev/null Thu Jan 01 00:00:00 1970 +0000
1.2 +++ b/src/share/classes/com/sun/tools/javap/BasicWriter.java Tue Jun 03 13:26:47 2008 -0700
1.3 @@ -0,0 +1,131 @@
1.4 +/*
1.5 + * Copyright 2007 Sun Microsystems, Inc. All Rights Reserved.
1.6 + * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
1.7 + *
1.8 + * This code is free software; you can redistribute it and/or modify it
1.9 + * under the terms of the GNU General Public License version 2 only, as
1.10 + * published by the Free Software Foundation. Sun designates this
1.11 + * particular file as subject to the "Classpath" exception as provided
1.12 + * by Sun in the LICENSE file that accompanied this code.
1.13 + *
1.14 + * This code is distributed in the hope that it will be useful, but WITHOUT
1.15 + * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
1.16 + * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
1.17 + * version 2 for more details (a copy is included in the LICENSE file that
1.18 + * accompanied this code).
1.19 + *
1.20 + * You should have received a copy of the GNU General Public License version
1.21 + * 2 along with this work; if not, write to the Free Software Foundation,
1.22 + * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
1.23 + *
1.24 + * Please contact Sun Microsystems, Inc., 4150 Network Circle, Santa Clara,
1.25 + * CA 95054 USA or visit www.sun.com if you need additional information or
1.26 + * have any questions.
1.27 + */
1.28 +
1.29 +package com.sun.tools.javap;
1.30 +
1.31 +import java.io.PrintWriter;
1.32 +
1.33 +import com.sun.tools.classfile.AttributeException;
1.34 +import com.sun.tools.classfile.ConstantPoolException;
1.35 +import com.sun.tools.classfile.DescriptorException;
1.36 +
1.37 +/*
1.38 + * A writer similar to a PrintWriter but which does not hide exceptions.
1.39 + * The standard print calls are line-buffered; report calls write messages directly.
1.40 + *
1.41 + * <p><b>This is NOT part of any API supported by Sun Microsystems. If
1.42 + * you write code that depends on this, you do so at your own risk.
1.43 + * This code and its internal interfaces are subject to change or
1.44 + * deletion without notice.</b>
1.45 + */
1.46 +public class BasicWriter {
1.47 + protected BasicWriter(Context context) {
1.48 + lineWriter = LineWriter.instance(context);
1.49 + out = context.get(PrintWriter.class);
1.50 + }
1.51 +
1.52 + protected void print(String s) {
1.53 + lineWriter.print(s);
1.54 + }
1.55 +
1.56 + protected void print(Object o) {
1.57 + lineWriter.print(o == null ? null : o.toString());
1.58 + }
1.59 +
1.60 + protected void println() {
1.61 + lineWriter.println();
1.62 + }
1.63 +
1.64 + protected void println(String s) {
1.65 + lineWriter.print(s);
1.66 + lineWriter.println();
1.67 + }
1.68 +
1.69 + protected void println(Object o) {
1.70 + lineWriter.print(o == null ? null : o.toString());
1.71 + lineWriter.println();
1.72 + }
1.73 +
1.74 + protected String report(AttributeException e) {
1.75 + out.println("Error: " + e.getMessage()); // i18n?
1.76 + return "???";
1.77 + }
1.78 +
1.79 + protected String report(ConstantPoolException e) {
1.80 + out.println("Error: " + e.getMessage()); // i18n?
1.81 + return "???";
1.82 + }
1.83 +
1.84 + protected String report(DescriptorException e) {
1.85 + out.println("Error: " + e.getMessage()); // i18n?
1.86 + return "???";
1.87 + }
1.88 +
1.89 + protected String report(String msg) {
1.90 + out.println("Error: " + msg); // i18n?
1.91 + return "???";
1.92 + }
1.93 +
1.94 + private LineWriter lineWriter;
1.95 + private PrintWriter out;
1.96 +
1.97 + private static class LineWriter {
1.98 + static LineWriter instance(Context context) {
1.99 + LineWriter instance = context.get(LineWriter.class);
1.100 + if (instance == null)
1.101 + instance = new LineWriter(context);
1.102 + return instance;
1.103 + }
1.104 +
1.105 + protected LineWriter(Context context) {
1.106 + context.put(LineWriter.class, this);
1.107 + out = context.get(PrintWriter.class);
1.108 + buffer = new StringBuilder();
1.109 + }
1.110 +
1.111 + protected void print(String s) {
1.112 + if (s == null)
1.113 + s = "null";
1.114 + for (int i = 0; i < s.length(); i++) {
1.115 + char c = s.charAt(i);
1.116 + if (c == '\n') {
1.117 + println();
1.118 + } else {
1.119 + buffer.append(c);
1.120 + }
1.121 + }
1.122 +
1.123 + }
1.124 +
1.125 + protected void println() {
1.126 + out.println(buffer);
1.127 + buffer.setLength(0);
1.128 + }
1.129 +
1.130 + private PrintWriter out;
1.131 + private StringBuilder buffer;
1.132 + }
1.133 +}
1.134 +
