Uniform iterators for trees, index, and workdir

This create a new git_iterator type of object that provides a
uniform interface for iterating over the index, an arbitrary
tree, or the working directory of a repository.

As part of this, git ignore support was extended to support
push and pop of directory-based ignore files as the working
directory is being traversed (so the array of ignores does
not have to be recreated at each directory during traveral).

There are a number of other small utility functions in buffer,
path, vector, and fileops that are included in this patch
that made the iterator implementation cleaner.

1 files changed, 1 insertions, 0 deletions

diff --git a/src/buffer.h b/src/buffer.h
index 3a003ce3c..3969f461e 100644
--- a/src/buffer.h
+++ b/src/buffer.h
@@ -84,6 +84,7 @@ int git_buf_printf(git_buf *buf, const char *format, ...) GIT_FORMAT_PRINTF(2, 3
 void git_buf_clear(git_buf *buf);
 void git_buf_consume(git_buf *buf, const char *end);
 void git_buf_truncate(git_buf *buf, ssize_t len);
+void git_buf_rtruncate_at_char(git_buf *path, char separator);
 
 int git_buf_join_n(git_buf *buf, char separator, int nbuf, ...);
 int git_buf_join(git_buf *buf, char separator, const char *str_a, const char *str_b);