Fix #16.

src/main/java/info/fetter/logstashforwarder/Event.java

@@ -17,6 +17,7 @@ package info.fetter.logstashforwarder;
  *
  */
 
+import java.io.UnsupportedEncodingException;
 import java.util.HashMap;
 import java.util.Map;
 
@@ -32,7 +33,7 @@ public class Event {
 		}
 	}
 	
-	public Event(Map<String,String> fields) {
+	public Event(Map<String,String> fields) throws UnsupportedEncodingException {
 		for(String key : fields.keySet()) {
 			addField(key, fields.get(key));
 		}
@@ -43,12 +44,12 @@ public class Event {
 		return this;
 	}
 	
-	public Event addField(String key, String value) {
+	public Event addField(String key, String value) throws UnsupportedEncodingException {
 		keyValues.put(key, value.getBytes());
 		return this;
 	}
 	
-	public Event addField(String key, long value) {
+	public Event addField(String key, long value) throws UnsupportedEncodingException {
 		keyValues.put(key, String.valueOf(value).getBytes());
 		return this;
 	}

src/main/java/info/fetter/logstashforwarder/FileReader.java

@@ -44,7 +44,6 @@ public class FileReader extends Reader {
 
 	public int readFiles(Collection<FileState> fileList) throws AdapterException {
 		int eventCount = 0;
-		stringBuilder = new StringBuilder(STRINGBUILDER_INITIAL_CAPACITY);
 		if(logger.isTraceEnabled()) {
 			logger.trace("Reading " + fileList.size() + " file(s)");
 		}
@@ -126,10 +125,10 @@ public class FileReader extends Reader {
 		long pos = state.getPointer();
 		try {
 			reader.seek(pos);
-			String line = readLine(reader);
+			byte[] line = readLine(reader);
 			while (line != null && spaceLeftInSpool > 0) {
 				if(logger.isTraceEnabled()) {
-					logger.trace("-- Read line : " + line);
+					logger.trace("-- Read line : " + new String(line));
 					logger.trace("-- Space left in spool : " + spaceLeftInSpool);
 				}
 				pos = reader.getFilePointer();
@@ -144,23 +143,26 @@ public class FileReader extends Reader {
 		return pos;
 	}
 
-	private String readLine(RandomAccessFile reader) throws IOException {
-		stringBuilder.setLength(0);
+	private byte[] readLine(RandomAccessFile reader) throws IOException {
+		byteBuffer.clear();
 		int ch;
 		boolean seenCR = false;
 		while((ch=reader.read()) != -1) {
 			switch(ch) {
 			case '\n':
-				return stringBuilder.toString();
+				byte[] line = new byte[byteBuffer.position()];
+				byteBuffer.rewind();
+				byteBuffer.get(line);
+				return line;
 			case '\r':
 				seenCR = true;
 				break;
 			default:
 				if (seenCR) {
-					stringBuilder.append('\r');
+					byteBuffer.put((byte) '\r');
 					seenCR = false;
 				}
-				stringBuilder.append((char)ch); // add character, not its ascii value
+				byteBuffer.put((byte)ch);
 			}
 		}
 		return null;

src/main/java/info/fetter/logstashforwarder/InputReader.java

@@ -35,7 +35,6 @@ public class InputReader extends Reader {
 	public InputReader(int spoolSize, InputStream in) {
 		super(spoolSize);
 		reader = new BufferedReader(new InputStreamReader(in));
-		stringBuilder = new StringBuilder(STRINGBUILDER_INITIAL_CAPACITY);
 	}
 	
 	public int readInput() throws AdapterException, IOException {
@@ -54,35 +53,36 @@ public class InputReader extends Reader {
 	
 	private int readLines() throws IOException {
 		int lineCount = 0;
-		String line;
+		byte[] line;
 		while(lineCount < spoolSize && (line = readLine()) != null) {
-			position += line.length();
+			position += line.length;
 			lineCount++;
 			addEvent("stdin", fields, position, line);
 		}
 		return lineCount;
 	}
 	
-	private String readLine() throws IOException {
+	private byte[] readLine() throws IOException {
 		int ch;
 		boolean seenCR = false;
-		String line;
 		while(reader.ready()) {
 			ch=reader.read();
 			switch(ch) {
 			case '\n':
-				line = stringBuilder.toString();
-				stringBuilder.setLength(0);
+				byte[] line = new byte[byteBuffer.position()];
+				byteBuffer.rewind();
+				byteBuffer.get(line);
+				byteBuffer.clear();
 				return line;
 			case '\r':
 				seenCR = true;
 				break;
 			default:
 				if (seenCR) {
-					stringBuilder.append('\r');
+					byteBuffer.put((byte) '\r');
 					seenCR = false;
 				}
-				stringBuilder.append((char)ch); // add character, not its ascii value
+				byteBuffer.put((byte)ch);
 			}
 		}
 		return null;

src/main/java/info/fetter/logstashforwarder/Reader.java

@@ -21,6 +21,7 @@ package info.fetter.logstashforwarder;
 import java.io.IOException;
 import java.net.InetAddress;
 import java.net.UnknownHostException;
+import java.nio.ByteBuffer;
 import java.util.ArrayList;
 import java.util.List;
 
@@ -29,8 +30,8 @@ public abstract class Reader {
 	protected ProtocolAdapter adapter;
 	protected int spoolSize = 0;
 	protected List<Event> eventList;
-	protected final int STRINGBUILDER_INITIAL_CAPACITY = 1000;
-	protected StringBuilder stringBuilder;
+	protected final int BYTEBUFFER_CAPACITY = 1024 * 1024;
+	protected ByteBuffer byteBuffer = ByteBuffer.allocate(BYTEBUFFER_CAPACITY);
 	private String hostname;
 	{
 		try {
@@ -49,6 +50,19 @@ public abstract class Reader {
 		addEvent(state.getFile().getCanonicalPath(), state.getFields(), pos, line);
 	}
 	
+	protected void addEvent(FileState state, long pos, byte[] line) throws IOException {
+		addEvent(state.getFile().getCanonicalPath(), state.getFields(), pos, line);
+	}
+	
+	protected void addEvent(String fileName, Event fields, long pos, byte[] line) throws IOException {
+		Event event = new Event(fields);
+		event.addField("file", fileName)
+		.addField("offset", pos)
+		.addField("line", line)
+		.addField("host", hostname);
+		eventList.add(event);
+	}
+
 	protected void addEvent(String fileName, Event fields, long pos, String line) throws IOException {
 		Event event = new Event(fields);
 		event.addField("file", fileName)