org.jeditor.diff

Class DiffBase

java.lang.Object

org.jeditor.diff.DiffBase

Direct Known Subclasses:

GUIPrint

public abstract class DiffBase
extends java.lang.Object

Represents the result of a Diff.

Since:

1.2.8

Field Summary

Fields

Modifier and Type	Field and Description
protected java.util.List<Change>	changes
protected int	deletes
protected java.lang.Object[]	file0
protected java.lang.Object[]	file1
protected int	first0
protected int	first1
protected UnaryPredicate	ignore
protected int	inserts
protected int	last0
protected int	last1

Constructor Summary

Constructors

Modifier	Constructor and Description
protected	DiffBase(java.lang.Object[] a, java.lang.Object[] b)
protected	DiffBase(java.lang.String a, java.lang.String b)

Method Summary

Modifier and Type	Method and Description
protected void	analyze_hunk(Diff.change hunk) Look at a hunk of edit script and report the range of lines in each file that it applies to.
char	change_letter(int inserts, int deletes)
java.util.List<Change>	getChanges() Return the list of Changes.
protected Diff.change	hunkfun(Diff.change hunk) Called with the tail of the script and returns the last link that belongs together with the start of the tail.
boolean	isChanged() Return true if there are changes between the two scripts.
protected void	print_number_range(char sepchar, int a, int b) Print a pair of line numbers with sepchar, translated for file FILE.
protected abstract Change	printHunk(Diff.change hunk) Print a Diff change hunk.
void	printScript(Diff.change script) Divide SCRIPT into pieces by calling hunkfun(org.jeditor.diff.Diff.change) and print each piece with printHunk(org.jeditor.diff.Diff.change).

Methods inherited from class java.lang.Object

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

Field Detail

ignore

protected UnaryPredicate ignore

file0

protected java.lang.Object[] file0

file1

protected java.lang.Object[] file1

first0

protected int first0

last0

protected int last0

first1

protected int first1

last1

protected int last1

deletes

protected int deletes

inserts

protected int inserts

changes

protected java.util.List<Change> changes

Constructor Detail

DiffBase

protected DiffBase(java.lang.Object[] a,
                   java.lang.Object[] b)

DiffBase

protected DiffBase(java.lang.String a,
                   java.lang.String b)

Method Detail

isChanged

public boolean isChanged()

Return true if there are changes between the two scripts.

Returns:

true if there are changes between the two scripts

getChanges

public java.util.List<Change> getChanges()

Return the list of Changes.

Returns:

the list of Changes

printScript

public void printScript(Diff.change script)

Divide SCRIPT into pieces by calling hunkfun(org.jeditor.diff.Diff.change) and print each piece with printHunk(org.jeditor.diff.Diff.change). Both functions take one arg, an edit script. printHunk(org.jeditor.diff.Diff.change) takes a subscript which belongs together (with a null link at the end) and prints it.

Parameters:

script - the change script

hunkfun

protected Diff.change hunkfun(Diff.change hunk)

Called with the tail of the script and returns the last link that belongs together with the start of the tail.

Parameters:

hunk - the hunk

Returns:

the change

analyze_hunk

protected void analyze_hunk(Diff.change hunk)

Look at a hunk of edit script and report the range of lines in each file that it applies to. hunk is the start of the hunk, which is a chain of `struct change'. The first and last line numbers of file 0 are stored in *FIRST0 and *LAST0, and likewise for file 1 in *FIRST1 and *LAST1. Note that these are internal line numbers that count from 0. If no lines from file 0 are deleted, then FIRST0 is LAST0+1. Also set *DELETES nonzero if any lines of file 0 are deleted and set *INSERTS nonzero if any lines of file 1 are inserted. If only ignorable lines are inserted or deleted, both are set to 0.

Parameters:

hunk - the change hunk

printHunk

protected abstract Change printHunk(Diff.change hunk)

Print a Diff change hunk.

Parameters:

hunk - the change hunk

Returns:

the Change

print_number_range

protected void print_number_range(char sepchar,
                                  int a,
                                  int b)

Print a pair of line numbers with sepchar, translated for file FILE. If the two numbers are identical, print just one number. Args A and B are internal line numbers. We print the translated (real) line numbers.

Parameters:

sepchar - the separator character

a - the first line

b - the second line

change_letter

public char change_letter(int inserts,
                          int deletes)