Package org.eclipse.jgit.diff

Class ContentSource

java.lang.Object

org.eclipse.jgit.diff.ContentSource

Direct Known Subclasses:

ContentSource.ObjectReaderSource, ContentSource.WorkingTreeSource

public abstract class ContentSource
extends java.lang.Object

Supplies the content of a file for DiffFormatter.

A content source is not thread-safe. Sources may contain state, including information about the last ObjectLoader they returned. Callers must be careful to ensure there is no more than one ObjectLoader pending on any source, at any time.

Nested Class Summary

Nested Classes

Modifier and Type	Class	Description
private static class	ContentSource.ObjectReaderSource
static class	ContentSource.Pair	A pair of sources to access the old and new sides of a DiffEntry.
private static class	ContentSource.WorkingTreeSource

Constructor Summary

Constructors

Constructor	Description
ContentSource()

Method Summary

Modifier and Type	Method	Description
static ContentSource	create(ObjectReader reader)	Construct a content source for an ObjectReader.
static ContentSource	create(WorkingTreeIterator iterator)	Construct a content source for a working directory.
abstract ObjectLoader	open(java.lang.String path, ObjectId id)	Open the object.
abstract long	size(java.lang.String path, ObjectId id)	Determine the size of the object.

Methods inherited from class java.lang.Object

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

Constructor Detail

ContentSource

public ContentSource()

Method Detail

create

public static ContentSource create(ObjectReader reader)

Construct a content source for an ObjectReader.

Parameters:

reader - the reader to obtain blobs from.

Returns:

a source wrapping the reader.

create

public static ContentSource create(WorkingTreeIterator iterator)

Construct a content source for a working directory. If the iterator is a FileTreeIterator an optimized version is used that doesn't require seeking through a TreeWalk.

Parameters:

iterator - the iterator to obtain source files through.

Returns:

a content source wrapping the iterator.

size

public abstract long size(java.lang.String path,
                          ObjectId id)
                   throws java.io.IOException

Determine the size of the object.

Parameters:

path - the path of the file, relative to the root of the repository.

id - blob id of the file, if known.

Returns:

the size in bytes.

Throws:

java.io.IOException - the file cannot be accessed.

open

public abstract ObjectLoader open(java.lang.String path,
                                  ObjectId id)
                           throws java.io.IOException

Open the object.

Parameters:

path - the path of the file, relative to the root of the repository.

id - blob id of the file, if known.

Returns:

a loader that can supply the content of the file. The loader must be used before another loader can be obtained from this same source.

Throws:

java.io.IOException - the file cannot be accessed.