git.gag.com Git - debian/openrocket/blob - src/net/sf/openrocket/logging/StackTraceWriter.java

   1 package net.sf.openrocket.logging;
   2
   3 import java.io.IOException;
   4 import java.io.Writer;
   5
   6 public class StackTraceWriter extends Writer {
   7
   8         public static final String PREFIX = "   > ";
   9
  10         private final StringBuilder buffer = new StringBuilder();
  11         private boolean addPrefix = true;
  12
  13         @Override
  14         public void write(char[] cbuf, int off, int len) throws IOException {
  15                 for (int i=0; i<len; i++) {
  16                         if (addPrefix) {
  17                                 buffer.append(PREFIX);
  18                                 addPrefix = false;
  19                         }
  20                         char c = cbuf[off+i];
  21                         buffer.append(c);
  22                         if (c == '\n')
  23                                 addPrefix = true;
  24                 }
  25         }
  26
  27
  28         @Override
  29         public String toString() {
  30                 if (addPrefix && buffer.length() > 0) {
  31                         return buffer.substring(0, buffer.length()-1);
  32                 } else {
  33                         return buffer.toString();
  34                 }
  35         }
  36
  37
  38         @Override
  39         public void close() throws IOException {
  40                 // no-op
  41         }
  42
  43         @Override
  44         public void flush() throws IOException {
  45                 // no-op
  46         }
  47
  48 }