Move the IndentingWriter class to the util project

git-svn-id: https://smali.googlecode.com/svn/trunk@788 55b6fa8a-2a1e-11de-a435-ffa8d773f76a

util/src/main/java/org/jf/util/IndentingWriter.java

@@ -0,0 +1,188 @@
+/*
+ * [The "BSD licence"]
+ * Copyright (c) 2010 Ben Gruver
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. 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.
+ * 3. The name of the author may not be used to endorse or promote products
+ *    derived from this software without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``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 AUTHOR 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 java.io.IOException;
+import java.io.Writer;
+
+public class IndentingWriter extends Writer {
+    private final Writer writer;
+    private final char[] buffer = new char[16];
+    private int indentLevel = 0;
+    private boolean beginningOfLine;
+    private static final String newLine = System.getProperty("line.separator");
+
+    public IndentingWriter(Writer writer) {
+        this.writer = writer;
+    }
+
+    @Override
+    public void write(int chr) throws IOException {
+        //synchronized(lock) {
+            if (chr == '\n') {
+                writer.write(newLine);
+                beginningOfLine = true;
+            } else {
+                if (beginningOfLine) {
+                    for (int i=0; i<indentLevel; i++) {
+                       writer.write(' ');
+                    }
+                }
+                beginningOfLine = false;
+                writer.write(chr);
+            }
+        //}
+    }
+
+    @Override
+    public void write(char[] chars) throws IOException {
+        //synchronized(lock) {
+            for (char chr: chars) {
+                write(chr);
+            }
+        //}
+    }
+
+    @Override
+    public void write(char[] chars, int start, int len) throws IOException {
+        //synchronized(lock) {
+            len = start+len;
+            while (start < len) {
+                write(chars[start++]);
+            }
+        //}
+    }
+
+    @Override
+    public void write(String s) throws IOException {
+        //synchronized (lock) {
+            for (int i=0; i<s.length(); i++) {
+                write(s.charAt(i));
+            }
+        //}
+    }
+
+    @Override
+    public void write(String str, int start, int len) throws IOException {
+        //synchronized(lock) {
+            len = start+len;
+            while (start < len) {
+                write(str.charAt(start++));
+            }
+        //}
+    }
+
+    @Override
+    public Writer append(CharSequence charSequence) throws IOException {
+        write(charSequence.toString());
+        return this;
+    }
+
+    @Override
+    public Writer append(CharSequence charSequence, int start, int len) throws IOException {
+        write(charSequence.subSequence(start, len).toString());
+        return this;
+    }
+
+    @Override
+    public Writer append(char c) throws IOException {
+        write(c);
+        return this;
+    }
+
+    @Override
+    public void flush() throws IOException {
+        //synchronized(lock) {
+            writer.flush();
+        //}
+    }
+
+    @Override
+    public void close() throws IOException {
+        //synchronized(lock) {
+            writer.close();
+        //}
+    }
+
+    public void indent(int indentAmount) {
+        //synchronized(lock) {
+            this.indentLevel += indentAmount;
+            if (indentLevel < 0) {
+                indentLevel = 0;
+            }
+        //}
+    }
+
+    public void deindent(int indentAmount) {
+        //synchronized(lock) {
+            this.indentLevel -= indentAmount;
+            if (indentLevel < 0) {
+                indentLevel = 0;
+            }
+        //}
+    }
+
+    public void printLongAsHex(long value) throws IOException {
+        int bufferIndex = 0;
+        do {
+            int digit = (int)(value & 15);
+            if (digit < 10) {
+                buffer[bufferIndex++] = (char)(digit + '0');
+            } else {
+                buffer[bufferIndex++] = (char)((digit - 10) + 'a');
+            }
+
+            value >>>= 4;
+        } while (value != 0);
+
+        while (bufferIndex>0) {
+            write(buffer[--bufferIndex]);
+        }
+    }
+
+    public void printIntAsDec(int value) throws IOException {
+        int bufferIndex = 0;
+        boolean negative = value < 0;
+
+        do {
+            int digit = value % 10;
+            buffer[bufferIndex++] = (char)(digit + '0');
+
+            value = value / 10;
+        } while (value != 0);
+
+        if (negative) {
+            write('-');
+        }
+
+        while (bufferIndex>0) {
+            write(buffer[--bufferIndex]);
+        }
+    }
+}