| /* |
| * Copyright 2016, Google Inc. |
| * All rights reserved. |
| * |
| * Redistribution and use in source and binary forms, with or without |
| * modification, are permitted provided that the following conditions are |
| * met: |
| * |
| * Redistributions of source code must retain the above copyright |
| * notice, this list of conditions and the following disclaimer. |
| * Redistributions in binary form must reproduce the above |
| * copyright notice, this list of conditions and the following disclaimer |
| * in the documentation and/or other materials provided with the |
| * distribution. |
| * Neither the name of Google Inc. nor the names of its |
| * contributors may be used to endorse or promote products derived from |
| * this software without specific prior written permission. |
| * |
| * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS |
| * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT |
| * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR |
| * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT |
| * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, |
| * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT |
| * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, |
| * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY |
| * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT |
| * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE |
| * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. |
| */ |
| |
| package org.jf.util; |
| |
| import com.google.common.collect.Lists; |
| |
| import java.io.FilterWriter; |
| import java.io.IOException; |
| import java.io.Writer; |
| import java.util.List; |
| |
| public class WrappedIndentingWriter extends FilterWriter { |
| |
| private final int maxIndent; |
| private final int maxWidth; |
| |
| private int currentIndent = 0; |
| private final StringBuilder line = new StringBuilder(); |
| |
| public WrappedIndentingWriter(Writer out, int maxIndent, int maxWidth) { |
| super(out); |
| this.maxIndent = maxIndent; |
| this.maxWidth = maxWidth; |
| } |
| |
| private void writeIndent() throws IOException { |
| for (int i=0; i<getIndent(); i++) { |
| write(' '); |
| } |
| } |
| |
| private int getIndent() { |
| if (currentIndent < 0) { |
| return 0; |
| } |
| if (currentIndent > maxIndent) { |
| return maxIndent; |
| } |
| return currentIndent; |
| } |
| |
| public void indent(int indent) { |
| currentIndent += indent; |
| } |
| |
| public void deindent(int indent) { |
| currentIndent -= indent; |
| } |
| |
| private void wrapLine() throws IOException { |
| List<String> wrapped = Lists.newArrayList(StringWrapper.wrapStringOnBreaks(line.toString(), maxWidth)); |
| out.write(wrapped.get(0), 0, wrapped.get(0).length()); |
| out.write('\n'); |
| |
| line.replace(0, line.length(), ""); |
| writeIndent(); |
| for (int i=1; i<wrapped.size(); i++) { |
| if (i > 1) { |
| write('\n'); |
| } |
| write(wrapped.get(i)); |
| } |
| } |
| |
| @Override public void write(int c) throws IOException { |
| if (c == '\n') { |
| out.write(line.toString()); |
| out.write(c); |
| line.replace(0, line.length(), ""); |
| writeIndent(); |
| } else { |
| line.append((char)c); |
| if (line.length() > maxWidth) { |
| wrapLine(); |
| } |
| } |
| } |
| |
| @Override public void write(char[] cbuf, int off, int len) throws IOException { |
| for (int i=0; i<len; i++) { |
| write(cbuf[i+off]); |
| } |
| } |
| |
| @Override public void write(String str, int off, int len) throws IOException { |
| for (int i=0; i<len; i++) { |
| write(str.charAt(i+off)); |
| } |
| } |
| |
| @Override public void flush() throws IOException { |
| out.write(line.toString()); |
| line.replace(0, line.length(), ""); |
| } |
| } |