com.jalios.util.diff
Class Diff

java.lang.Object
  com.jalios.util.diff.Diff

public class Diff
extends Object

The Diff class compares two files. It compares also two BufferedReaders or two strings. after the comparison the vector will represents a list of hunk corresponding with blocks of difference.

Field Summary

static int	DELETE
static int	INSERT
static int	MAXLINES
static int	ORIGIN

Constructor Summary

Diff()
Allocates a new diff containing no Hunks.

Diff(String s1, String s2)
Allocates a new diff which contains Hunks corresponding to the difference between the two files passed in arguments.

Method Summary

void	diffBuffer(BufferedReader in, BufferedReader inn) Compares two BufferedReaders and updates the vector of Hunks.
void	diffFile(String s1, String s2) Compares two files and updates the vector of Hunks.
void	diffString(String s1, String s2) Compares two strings and updates the vector of Hunks.
List	getHunk() Returns a vector containing Hunks.
String	iterateHunkBuffer(BufferedReader reader, String stuffBeforeDelete, String stuffAfterDelete, String stuffBeforeAdd, String stuffAfterAdd, String stuffBefore, String stuffAfter, boolean printline, boolean escapeHTML, boolean hunkString) Iterate over a the hunks to print a readable representation.
String	iterateHunkString(String str, String stuffBeforeDelete, String stuffAfterDelete, String stuffBeforeAdd, String stuffAfterAdd, boolean escapeHTML) Iterate over a the hunks to print a readable representation.
static void	main(String[] args)
void	print() Print Hunks with normal format.

Methods inherited from class java.lang.Object

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

Field Detail

MAXLINES

public static final int MAXLINES

See Also:

Constant Field Values

ORIGIN

public static final int ORIGIN

See Also:

Constant Field Values

INSERT

public static final int INSERT

See Also:

Constant Field Values

DELETE

public static final int DELETE

See Also:

Constant Field Values

Constructor Detail

Diff

public Diff()

Allocates a new diff containing no Hunks.

Diff

public Diff(String s1,
            String s2)
     throws IOException

Allocates a new diff which contains Hunks corresponding to the difference between the two files passed in arguments.

Parameters:

s1 - first file to compare.

s2 - second file to compare.

Throws:

IOException

Method Detail

main

public static void main(String[] args)
                 throws Exception

Throws:

Exception

iterateHunkString

public String iterateHunkString(String str,
                                String stuffBeforeDelete,
                                String stuffAfterDelete,
                                String stuffBeforeAdd,
                                String stuffAfterAdd,
                                boolean escapeHTML)
                         throws Exception

Iterate over a the hunks to print a readable representation.

Parameters:

str - The original string to print

stuffBeforeDelete - String to add before deleted hunk.

stuffAfterDelete - String to add after deleted hunk.

stuffBeforeAdd - String to add before added hunk.

stuffAfterAdd - String to add after added hunk.

escapeHTML - should escape html ?

Returns:

The result string

Throws:

Exception

iterateHunkBuffer

public String iterateHunkBuffer(BufferedReader reader,
                                String stuffBeforeDelete,
                                String stuffAfterDelete,
                                String stuffBeforeAdd,
                                String stuffAfterAdd,
                                String stuffBefore,
                                String stuffAfter,
                                boolean printline,
                                boolean escapeHTML,
                                boolean hunkString)
                         throws Exception

Iterate over a the hunks to print a readable representation.

Parameters:

reader - The original buffer to print

stuffBeforeDelete - String to add before deleted hunk.

stuffAfterDelete - String to add after deleted hunk.

stuffBeforeAdd - String to add before added hunk.

stuffAfterAdd - String to add after added hunk.

stuffBefore - String to add before line.

stuffAfter - String to add after line.

printline - should print the line number ?

escapeHTML - should escape html ?

hunkString - should diff each line of hunks ?

Returns:

The result string

Throws:

Exception

getHunk

public List getHunk()

Returns a vector containing Hunks.

diffFile

public void diffFile(String s1,
                     String s2)
              throws IOException

Compares two files and updates the vector of Hunks.

Parameters:

s1 - first file to compare.

s2 - second file to compare.

Throws:

IOException

diffBuffer

public void diffBuffer(BufferedReader in,
                       BufferedReader inn)
                throws IOException

Compares two BufferedReaders and updates the vector of Hunks.

Parameters:

in - first BufferedReader to compare.

inn - second BufferedReader to compare.

Throws:

IOException

diffString

public void diffString(String s1,
                       String s2)
                throws IOException

Compares two strings and updates the vector of Hunks.

Parameters:

s1 - first string to compare.

s2 - second string to compare.

Throws:

IOException

print

public void print()

Print Hunks with normal format.