release 0.9.6

[debian/openrocket] / src / net / sf / openrocket / logging / StackTraceWriter.java

diff --git a/src/net/sf/openrocket/logging/StackTraceWriter.java b/src/net/sf/openrocket/logging/StackTraceWriter.java
new file mode 100644 (file)
index 0000000..dbe2c5a
--- /dev/null
+++ b/src/net/sf/openrocket/logging/StackTraceWriter.java
@@ -0,0 +1,48 @@
+package net.sf.openrocket.logging;
+
+import java.io.IOException;
+import java.io.Writer;
+
+public class StackTraceWriter extends Writer {
+       
+       public static final String PREFIX = "   > ";
+       
+       private final StringBuilder buffer = new StringBuilder();
+       private boolean addPrefix = true;
+
+       @Override
+       public void write(char[] cbuf, int off, int len) throws IOException {
+               for (int i=0; i<len; i++) {
+                       if (addPrefix) {
+                               buffer.append(PREFIX);
+                               addPrefix = false;
+                       }
+                       char c = cbuf[off+i];
+                       buffer.append(c);
+                       if (c == '\n')
+                               addPrefix = true;
+               }
+       }
+
+       
+       @Override
+       public String toString() {
+               if (addPrefix && buffer.length() > 0) {
+                       return buffer.substring(0, buffer.length()-1);
+               } else {
+                       return buffer.toString();
+               }
+       }
+
+       
+       @Override
+       public void close() throws IOException {
+               // no-op
+       }
+
+       @Override
+       public void flush() throws IOException {
+               // no-op
+       }
+
+}