Attributes MacroExpander implements macros used in git attributes. This
is implemented inside the TreeWalk using a lazy created MacroExpander.
In addition, the macro expander caches the global and info attributes
node in order to provide fast merge of attributes.

Change-Id: I2e69c9fc84e9d7fb8df0a05817d688fc456d8f00
Signed-off-by: Ivan Motsch <ivan.motsch@bsiag.com>

2262a794b4 removed throws CorruptObjectException, but was not
compiled under Eclipse and did not see errors generated by Eclipse.
Maven build silently ignored the unnecessary code.

Change-Id: I6e9014adcc604588e10e5963d13d0c6ef0e1c617

2262a794b4 removed throws CorruptObjectException, but was not
compiled under Eclipse and did not see errors generated by Eclipse.
Maven build silently ignored the unnecessary code.

Change-Id: I6e9014adcc604588e10e5963d13d0c6ef0e1c617

Attributes represents a semantic collector of Attribute(s) and replaces
the anonymous Map<String,Attribute>. This class will be returned by
TreeWalk.getAttributes(). It offers convenient access to the attributes
wrapped in the Attributes object. Adds preparations for a future
Attribute Macro Expansion

Change-Id: I8348c8c457a2a7f1f0c48050e10399b0fa1cdbe1
Signed-off-by: Ivan Motsch <ivan.motsch@bsiag.com>

Adds the getAttributes feature to the tree walk. The computation of
attributes needs to be done by the TreeWalk since it needs both a
WorkingTreeIterator and a DirCacheIterator.

Bug: 342372
CQ: 9120
Change-Id: I5e33257fd8c9895869a128bad3fd1e720409d361
Signed-off-by: Arthur Daussy <arthur.daussy@obeo.fr>
Signed-off-by: Christian Halstrick <christian.halstrick@sap.com>

Core classes to parse and process .gitattributes files including
support for reading attributes in WorkingTreeIterator and the
dirCacheIterator.

The implementation follows the git ignore implementation. It supports
lazy reading attributes while walking the working tree.

Bug: 342372
CQ: 9078
Change-Id: I05f3ce1861fbf9896b1bcb7816ba78af35f3ad3d
Also-by: Marc Strapetz <marc.strapetz@syntevo.com>
Also-by: Gunnar Wagenknecht <gunnar@wagenknecht.org>
Also-by: Arthur Daussy <arthur.daussy@obeo.fr>
Signed-off-by: Gunnar Wagenknecht <gunnar@wagenknecht.org>
Signed-off-by: Marc Strapetz <marc.strapetz@syntevo.com>
Signed-off-by: Arthur Daussy <arthur.daussy@obeo.fr>
Signed-off-by: Chris Aniszczyk <caniszczyk@gmail.com>
Signed-off-by: Matthias Sohn <matthias.sohn@sap.com>
Signed-off-by: Chris Aniszczyk <caniszczyk@gmail.com>