Repo init

src/difflib/Chunk.java

@@ -0,0 +1,130 @@
+package difflib;
+
+import java.util.*;
+
+/**
+ * Holds the information about the part of text involved in the diff process
+ * 
+ * <p>Text is represented as <code>Object[]</code> because
+ * the diff engine is capable of handling more than plain ascci. In fact,
+ * arrays or lists of any type that implements
+ * {@link java.lang.Object#hashCode hashCode()} and
+ * {@link java.lang.Object#equals equals()}
+ * correctly can be subject to differencing using this
+ * library.</p>
+ * 
+ * @author <a href="dm.naumenko@gmail.com>Dmitry Naumenko</a>
+ */
+public class Chunk {
+	private int position;
+	private int size;
+	private List<?> lines;
+	
+	/**
+	 * Creates a chunk and saves a copy of affected lines
+	 * 
+	 * @param position the start position
+	 * @param size the size of a Chunk
+	 * @param lines the affected lines  
+	 */
+	public Chunk(int position, int size, List<?> lines) {
+		this.position = position;
+		this.size = size;
+		this.lines = lines;
+	}
+	
+	/**
+	 * Creates a chunk and saves a copy of affected lines
+	 * 
+	 * @param position the start position
+	 * @param size the size of a Chunk
+	 * @param lines the affected lines  
+	 */
+	public Chunk(int position, int size, Object[] lines) {
+		this.position = position;
+		this.size = size;
+		this.lines = Arrays.asList(lines);
+	}
+	
+	/**
+	 * @return the start position of chunk in the text  
+	 */
+	public int getPosition() {
+		return position;
+	}
+	/**
+	 * @param position the start position to set
+	 */
+	public void setPosition(int position) {
+		this.position = position;
+	}
+	
+	/**
+	 * @return the size of Chunk (size of affected lines)
+	 */
+	public int getSize() {
+		return size;
+	}
+	/**
+	 * @param size the size of affected lines to set
+	 */
+	public void setSize(int size) {
+		this.size = size;
+	}
+	
+	/**
+	 * @return the affected lines
+	 */
+	public List<?> getLines() {
+		return lines;
+	}
+	/**
+	 * @param lines the affected lines to set
+	 */
+	public void setLines(List<?> lines) {
+		this.lines = lines;
+	}
+
+	/* (non-Javadoc)
+	 * @see java.lang.Object#hashCode()
+	 */
+	@Override
+	public int hashCode() {
+		final int prime = 31;
+		int result = 1;
+		result = prime * result + ((lines == null) ? 0 : lines.hashCode());
+		result = prime * result + position;
+		result = prime * result + size;
+		return result;
+	}
+
+	/* (non-Javadoc)
+	 * @see java.lang.Object#equals(java.lang.Object)
+	 */
+	@Override
+	public boolean equals(Object obj) {
+		if (this == obj)
+			return true;
+		if (obj == null)
+			return false;
+		if (getClass() != obj.getClass())
+			return false;
+		Chunk other = (Chunk) obj;
+		if (lines == null) {
+			if (other.lines != null)
+				return false;
+		} else if (!lines.equals(other.lines))
+			return false;
+		if (position != other.position)
+			return false;
+		if (size != other.size)
+			return false;
+		return true;
+	}
+	
+	@Override
+	public String toString() {
+		return "[position: " + position + ", size: " + size + ", lines: " + lines + "]";
+	}
+	
+}