com.borland.primetime.util
Class Diff.DiffEntry
java.lang.Object
|
+--com.borland.primetime.util.Diff.DiffEntry
- Enclosing class:
- Diff
- public class Diff.DiffEntry
- extends java.lang.Object
A DiffEntry is used to describe a region of lines that are
changed from an ORIGINAL file to a NEW file. A diff between
two files consists of a number of DiffEntries
All line numbers are 1-based.
A DiffEntry basically consists of two parts:
1. A startLine and count field that show which lines have to
be deleted from the ORIGINAL file, and where to add the
newLines from the NEW file
2. An array of Strings containing the lines from the NEW
file that either replace lines in the ORIGINAL file, or
are added outright.
We use a type field to quickly distinguish between three
scenarios:
ADD: Several lines are added to the ORIGINAL file
startLine = line in the ORIGINAL after which the lines get added
count = 0
newLines = the lines that get added
CHANGE: Lines are changed between the files
startLine = first line in the ORIGINAL that gets changed
count = number of lines that change
count == newLines.length
newLines = the lines that replace the original lines
DELETE: Lines are deleted from the original file
startLine = first line in the ORIGINAL that gets deleted
count = number of lines that get deleted
newLines = emptyLines
Field Summary |
static int |
ADD
the allowed values for the type |
static int |
CHANGE
|
int |
count
the number of lines in the ORIGINAL file that get changed |
static int |
DELETE
|
java.lang.String[] |
newLines
the lines from the NEW file that replace
[startLine...startLine+length[
in the ORIGINAL file |
int |
startLine
the start line in the ORIGINAL file |
int |
type
the type of the diff |
Constructor Summary |
Diff.DiffEntry(int type,
int start,
int count,
java.lang.String[] lines)
Create a DiffEntry object. |
Methods inherited from class java.lang.Object |
clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait |
ADD
public static final int ADD
- the allowed values for the type
CHANGE
public static final int CHANGE
DELETE
public static final int DELETE
type
public int type
- the type of the diff
startLine
public int startLine
- the start line in the ORIGINAL file
count
public int count
- the number of lines in the ORIGINAL file that get changed
newLines
public java.lang.String[] newLines
- the lines from the NEW file that replace
[startLine...startLine+length[
in the ORIGINAL file
Diff.DiffEntry
public Diff.DiffEntry(int type,
int start,
int count,
java.lang.String[] lines)
- Create a DiffEntry object.
- Parameters:
type
- the type as in ADD | CHANGE | DELETEstart
- where does the modification startcount
- how many lines deleted, added, or changed.
if added or changed, this should be the
size of the lines array.lines
- the array of lines to be added when
the type is ADD or CHANGE. This parameter
should be null for DELETE types.