1 files changed, 94 insertions, 0 deletions
diff --git a/src/com/softsynth/util/IndentingWriter.java b/src/com/softsynth/util/IndentingWriter.java
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+++ b/src/com/softsynth/util/IndentingWriter.java
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+/*
+ * Copyright 2000 Phil Burk, Mobileer Inc
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ * 
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ * 
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package com.softsynth.util;
+
+import java.io.OutputStream;
+import java.io.PrintWriter;
+import java.io.Writer;
+
+/**
+ * Write to a file with indentation at the beginning of a line. One advantage of using a PrintWriter
+ * is that it automatically handles line terminators properly on different hosts.
+ * 
+ * @author Phil Burk, (C) 2000 SoftSynth.com All Rights Reserved
+ */
+
+public class IndentingWriter extends PrintWriter {
+    int spacesPerIndentation = 4;
+    int indentation = 0;
+    int position = 0;
+
+    public IndentingWriter(OutputStream stream) {
+        super(stream, true);
+    }
+
+    public IndentingWriter(Writer outputStreamWriter) {
+        super(outputStreamWriter, true);
+    }
+
+    public void setIndentation(int level) {
+        indentation = level;
+    }
+
+    public int getIndentation() {
+        return indentation;
+    }
+
+    /**
+     * Increase level of indentation by one.
+     */
+    public void indent() {
+        indentation++;
+    }
+
+    /**
+     * Decrease level of indentation by one. Don't let level go below zero.
+     */
+    public void undent() {
+        indentation--;
+        if (indentation < 0)
+            indentation = 0;
+    }
+
+    /**
+     * Print string. If at left margin, add spaces for current level of indentation.
+     */
+    @Override
+    public void print(String s) {
+        if (position == 0) {
+            int numSpaces = indentation * spacesPerIndentation;
+            for (int i = 0; i < numSpaces; i++)
+                print(' ');
+            position += numSpaces;
+        }
+        super.print(s);
+        // System.out.print(s);
+        position += s.length();
+    }
+
+    @Override
+    public void println() {
+        super.println();
+        position = 0;
+    }
+
+    @Override
+    public void println(String s) {
+        print(s);
+        println();
+    }
+}