org.jline.utils

Class DiffHelper

java.lang.Object

org.jline.utils.DiffHelper

public class DiffHelper
extends Object

Class containing the diff method. This diff is ANSI aware and will correctly handle text attributes so that any text in a Diff object is a valid ansi string.

Nested Class Summary

Nested Classes

Modifier and Type	Class and Description
static class	DiffHelper.Diff Class representing one diff operation.
static class	DiffHelper.Operation The data structure representing a diff is a Linked list of Diff objects: {Diff(Operation.DELETE, "Hello"), Diff(Operation.INSERT, "Goodbye"), Diff(Operation.EQUAL, " world.")} which means: delete "Hello", add "Goodbye" and keep " world."

Constructor Summary

Constructors

Constructor and Description
DiffHelper()

Method Summary

Modifier and Type	Method and Description
static List<DiffHelper.Diff>	diff(AttributedString text1, AttributedString text2) Compute a list of difference between two lines.

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Constructor Detail

DiffHelper

public DiffHelper()

Method Detail

diff

public static List<DiffHelper.Diff> diff(AttributedString text1,
                                         AttributedString text2)

Compute a list of difference between two lines. The result will contain at most 4 Diff objects, as the method aims to return the common prefix, inserted text, deleted text and common suffix. The computation is done on characters and their attributes expressed as ansi sequences.

Parameters:

text1 - the old line

text2 - the new line

Returns:

a list of Diff