Split up tree diff functions into tree-diff.c library
This makes the tree diff functionality independent of the "git-diff-tree"
program, by splitting the core functionality up into a library file.
This will be needed for when we teach git-rev-list to only follow a
specified set of pathnames, rather than the global revision history.
Most of it is a fairly straightforward code move, but it also involves
some calling convention cleanup, and moving some of the static variables
from diff-tree.c into the options structure.
The actual tree change callback routines also become paramterized by the
diff_options structure, allowing the library functionality to do something
else than just show the diff on stdout.
Right now the only user of this functionality remains git-diff-tree
itself.
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
Signed-off-by: Junio C Hamano <junkio@cox.net>
diff --git a/diff.c b/diff.c
index 306bcd9..ec94a96 100644
--- a/diff.c
+++ b/diff.c
@@ -754,6 +754,9 @@
options->line_termination = '\n';
options->break_opt = -1;
options->rename_limit = -1;
+
+ options->change = diff_change;
+ options->add_remove = diff_addremove;
}
int diff_setup_done(struct diff_options *options)
