1 files changed, 162 insertions, 714 deletions

diff --git a/src/status.c b/src/status.c
index 62ef35685..e9ad3cfe4 100644
--- a/src/status.c
+++ b/src/status.c
@@ -1,5 +1,5 @@
 /*
- * Copyright (C) 2009-2011 the libgit2 contributors
+ * Copyright (C) 2009-2012 the libgit2 contributors
  *
  * This file is part of libgit2, distributed under the GNU GPL v2 with
  * a Linking Exception. For full terms see the included COPYING file.
@@ -15,780 +15,228 @@
 #include "repository.h"
 #include "ignore.h"
 
-struct status_entry {
-	git_index_time mtime;
+#include "git2/diff.h"
+#include "diff.h"
 
-	git_oid head_oid;
-	git_oid index_oid;
-	git_oid wt_oid;
-
-	unsigned int status_flags;
-
-	char path[GIT_FLEX_ARRAY]; /* more */
-};
-
-static struct status_entry *status_entry_new(git_vector *entries, const char *path)
-{
-	struct status_entry *e = git__calloc(sizeof(*e) + strlen(path) + 1, 1);
-	if (e == NULL)
-		return NULL;
-
-	if (entries != NULL)
-		git_vector_insert(entries, e);
-
-	strcpy(e->path, path);
-
-	return e;
-}
-
-GIT_INLINE(void) status_entry_update_from_tree_entry(struct status_entry *e, const git_tree_entry *tree_entry)
-{
-	assert(e && tree_entry);
-
-	git_oid_cpy(&e->head_oid, &tree_entry->oid);
-}
-
-GIT_INLINE(void) status_entry_update_from_index_entry(struct status_entry *e, const git_index_entry *index_entry)
-{
-	assert(e && index_entry);
-
-	git_oid_cpy(&e->index_oid, &index_entry->oid);
-	e->mtime = index_entry->mtime;
-}
-
-static void status_entry_update_from_index(struct status_entry *e, git_index *index)
-{
-	int idx;
-	git_index_entry *index_entry;
-
-	assert(e && index);
-
-	idx = git_index_find(index, e->path);
-	if (idx < 0)
-		return;
-
-	index_entry = git_index_get(index, idx);
-
-	status_entry_update_from_index_entry(e, index_entry);
-}
-
-static int status_entry_update_from_workdir(struct status_entry *e, const char* full_path)
-{
-	struct stat filest;
-
-	if (p_stat(full_path, &filest) < GIT_SUCCESS)
-		return git__throw(GIT_EOSERR, "Failed to determine status of file '%s'. Can't read file", full_path);
-
-	if (e->mtime.seconds == (git_time_t)filest.st_mtime)
-		git_oid_cpy(&e->wt_oid, &e->index_oid);
-	else
-		git_odb_hashfile(&e->wt_oid, full_path, GIT_OBJ_BLOB);
-
-	return GIT_SUCCESS;
-}
-
-static int status_entry_update_flags(struct status_entry *e)
-{
-	git_oid zero;
-	int head_zero, index_zero, wt_zero;
-
-	memset(&zero, 0x0, sizeof(git_oid));
-
-	head_zero = git_oid_cmp(&zero, &e->head_oid);
-	index_zero = git_oid_cmp(&zero, &e->index_oid);
-	wt_zero = git_oid_cmp(&zero, &e->wt_oid);
-
-	if (head_zero == 0 && index_zero == 0 && wt_zero == 0)
-		return GIT_ENOTFOUND;
-
-	if (head_zero == 0 && index_zero != 0)
-		e->status_flags |= GIT_STATUS_INDEX_NEW;
-	else if (index_zero == 0 && head_zero != 0)
-		e->status_flags |= GIT_STATUS_INDEX_DELETED;
-	else if (git_oid_cmp(&e->head_oid, &e->index_oid) != 0)
-		e->status_flags |= GIT_STATUS_INDEX_MODIFIED;
-
-	if (index_zero == 0 && wt_zero != 0)
-		e->status_flags |= GIT_STATUS_WT_NEW;
-	else if (wt_zero == 0 && index_zero != 0)
-		e->status_flags |= GIT_STATUS_WT_DELETED;
-	else if (git_oid_cmp(&e->index_oid, &e->wt_oid) != 0)
-		e->status_flags |= GIT_STATUS_WT_MODIFIED;
-
-	return GIT_SUCCESS;
-}
-
-static int status_entry_is_ignorable(struct status_entry *e)
-{
-	/* don't ignore files that exist in head or index already */
-	return (e->status_flags == GIT_STATUS_WT_NEW);
-}
-
-static int status_entry_update_ignore(struct status_entry *e, git_ignores *ignores, const char *path)
-{
-	int error, ignored;
-
-	if ((error = git_ignore__lookup(ignores, path, &ignored)) == GIT_SUCCESS &&
-		ignored)
-		e->status_flags =
-			(e->status_flags & ~GIT_STATUS_WT_NEW) | GIT_STATUS_IGNORED;
-
-	return error;
-}
-
-struct status_st {
-	git_repository *repo;
-	git_vector *vector;
-	git_index *index;
-	git_tree *tree;
-	git_ignores *ignores;
-
-	int workdir_path_len;
-	git_buf head_tree_relative_path;
-	int head_tree_relative_path_len;
-	unsigned int tree_position;
-	unsigned int index_position;
-	int is_dir:1;
-};
-
-static int retrieve_head_tree(git_tree **tree_out, git_repository *repo)
+static unsigned int index_delta2status(git_delta_t index_status)
 {
-	git_reference *resolved_head_ref;
-	git_commit *head_commit = NULL;
-	git_tree *tree;
-	int error = GIT_SUCCESS;
-
-	*tree_out = NULL;
-
-	error = git_repository_head(&resolved_head_ref, repo);
-	/*
-	 * We assume that a situation where HEAD exists but can not be resolved is valid.
-	 * A new repository fits this description for instance.
-	 */
-	if (error == GIT_ENOTFOUND)
-		return GIT_SUCCESS;
-	if (error < GIT_SUCCESS)
-		return git__rethrow(error, "HEAD can't be resolved");
-
-	if ((error = git_commit_lookup(&head_commit, repo, git_reference_oid(resolved_head_ref))) < GIT_SUCCESS)
-		return git__rethrow(error, "The tip of HEAD can't be retrieved");
-
-	git_reference_free(resolved_head_ref);
-
-	if ((error = git_commit_tree(&tree, head_commit)) < GIT_SUCCESS) {
-		error = git__rethrow(error, "The tree of HEAD can't be retrieved");
-		goto exit;
-	}
-
-	*tree_out = tree;
-
-exit:
-	git_commit_free(head_commit);
-	return error;
-}
+	unsigned int st = GIT_STATUS_CURRENT;
 
-enum path_type {
-	GIT_STATUS_PATH_NULL,
-	GIT_STATUS_PATH_IGNORE,
-	GIT_STATUS_PATH_FILE,
-	GIT_STATUS_PATH_FOLDER,
-};
-
-static int dirent_cb(void *state, git_buf *full_path);
-static int alphasorted_futils_direach(
-	git_buf *path, int (*fn)(void *, git_buf *), void *arg);
-
-static int process_folder(
-	struct status_st *st,
-	const git_tree_entry *tree_entry,
-	git_buf *full_path,
-	enum path_type path_type)
-{
-	git_object *subtree = NULL;
-	git_tree *pushed_tree = NULL;
-	int error, pushed_tree_position = 0;
-	git_otype tree_entry_type = GIT_OBJ_BAD;
-
-	if (tree_entry != NULL) {
-		tree_entry_type = git_tree_entry_type(tree_entry);
-
-		switch (tree_entry_type) {
-		case GIT_OBJ_TREE:
-			error = git_tree_entry_2object(&subtree, ((git_object *)(st->tree))->repo, tree_entry);
-			pushed_tree = st->tree;
-			pushed_tree_position = st->tree_position;
-			st->tree = (git_tree *)subtree;
-			st->tree_position = 0;
-			st->head_tree_relative_path_len += 1 + tree_entry->filename_len; /* path + '/' + name */
-			break;
-
-		case GIT_OBJ_BLOB:
-			/* No op */
-			break;
-
-		case GIT_OBJ_COMMIT:
-			/* TODO: proper submodule support */
-			break;
-
-		default:
-			return git__throw(GIT_EINVALIDTYPE, "Unexpected tree entry type");
-		}
+	switch (index_status) {
+	case GIT_DELTA_ADDED:
+	case GIT_DELTA_COPIED:
+	case GIT_DELTA_RENAMED:
+		st = GIT_STATUS_INDEX_NEW;
+		break;
+	case GIT_DELTA_DELETED:
+		st = GIT_STATUS_INDEX_DELETED;
+		break;
+	case GIT_DELTA_MODIFIED:
+		st = GIT_STATUS_INDEX_MODIFIED;
+		break;
+	default:
+		break;
 	}
 
-
-	if (full_path != NULL && path_type == GIT_STATUS_PATH_FOLDER) {
-		git_ignores ignores, *old_ignores;
-
-		if ((error = git_ignore__for_path(st->repo,
-			full_path->ptr + st->workdir_path_len, &ignores)) == GIT_SUCCESS)
-		{
-			old_ignores = st->ignores;
-			st->ignores = &ignores;
-
-			error = alphasorted_futils_direach(full_path, dirent_cb, st);
-
-			git_ignore__free(st->ignores);
-			st->ignores = old_ignores;
-		}
-	} else {
-		error = dirent_cb(st, NULL);
-	}
-
-	if (tree_entry_type == GIT_OBJ_TREE) {
-		git_object_free(subtree);
-		st->head_tree_relative_path_len -= 1 + tree_entry->filename_len;
-		st->tree = pushed_tree;
-		st->tree_position = pushed_tree_position;
-		st->tree_position++;
-	}
-
-	return error;
+	return st;
 }
 
-static int store_if_changed(struct status_st *st, struct status_entry *e)
+static unsigned int workdir_delta2status(git_delta_t workdir_status)
 {
-	int error;
-	if ((error = status_entry_update_flags(e)) < GIT_SUCCESS)
-		return git__throw(error, "Failed to process the file '%s'. It doesn't exist in the workdir, in the HEAD nor in the index", e->path);
-
-	if (status_entry_is_ignorable(e) &&
-		(error = status_entry_update_ignore(e, st->ignores, e->path)) < GIT_SUCCESS)
-		return error;
+	unsigned int st = GIT_STATUS_CURRENT;
 
-	if (e->status_flags == GIT_STATUS_CURRENT) {
-		git__free(e);
-		return GIT_SUCCESS;
+	switch (workdir_status) {
+	case GIT_DELTA_ADDED:
+	case GIT_DELTA_COPIED:
+	case GIT_DELTA_RENAMED:
+	case GIT_DELTA_UNTRACKED:
+		st = GIT_STATUS_WT_NEW;
+		break;
+	case GIT_DELTA_DELETED:
+		st = GIT_STATUS_WT_DELETED;
+		break;
+	case GIT_DELTA_MODIFIED:
+		st = GIT_STATUS_WT_MODIFIED;
+		break;
+	case GIT_DELTA_IGNORED:
+		st = GIT_STATUS_IGNORED;
+		break;
+	default:
+		break;
 	}
 
-	return git_vector_insert(st->vector, e);
+	return st;
 }
 
-static int determine_status(
-	struct status_st *st,
-	int in_head, int in_index, int in_workdir,
-	const git_tree_entry *tree_entry,
-	const git_index_entry *index_entry,
-	git_buf *full_path,
-	const char *status_path,
-	enum path_type path_type)
-{
-	struct status_entry *e;
-	int error = GIT_SUCCESS;
-	git_otype tree_entry_type = GIT_OBJ_BAD;
-
-	if (tree_entry != NULL)
-		tree_entry_type = git_tree_entry_type(tree_entry);
-
-	/* If we're dealing with a directory in the workdir, let's recursively tackle it first */
-	if (path_type == GIT_STATUS_PATH_FOLDER)
-		return process_folder(st, tree_entry, full_path, path_type);
-
-	/* Are we dealing with a file somewhere? */
-	if (in_workdir || in_index || (in_head && tree_entry_type == GIT_OBJ_BLOB)) {
-		e = status_entry_new(NULL, status_path);
+int git_status_foreach_ext(
+	git_repository *repo,
+	const git_status_options *opts,
+	int (*cb)(const char *, unsigned int, void *),
+	void *cbdata)
+{
+	int err = 0, cmp;
+	git_diff_options diffopt;
+	git_diff_list *idx2head = NULL, *wd2idx = NULL;
+	git_tree *head = NULL;
+	git_status_show_t show =
+		opts ? opts->show : GIT_STATUS_SHOW_INDEX_AND_WORKDIR;
+	git_diff_delta *i2h, *w2i;
+	unsigned int i, j, i_max, j_max;
+
+	assert(show <= GIT_STATUS_SHOW_INDEX_THEN_WORKDIR);
+
+	if ((err = git_repository_head_tree(&head, repo)) < 0)
+		return err;
+
+	memset(&diffopt, 0, sizeof(diffopt));
+	memcpy(&diffopt.pathspec, &opts->pathspec, sizeof(diffopt.pathspec));
+
+	if ((opts->flags & GIT_STATUS_OPT_INCLUDE_UNTRACKED) != 0)
+		diffopt.flags = diffopt.flags | GIT_DIFF_INCLUDE_UNTRACKED;
+	if ((opts->flags & GIT_STATUS_OPT_INCLUDE_IGNORED) != 0)
+		diffopt.flags = diffopt.flags | GIT_DIFF_INCLUDE_IGNORED;
+	if ((opts->flags & GIT_STATUS_OPT_INCLUDE_UNMODIFIED) != 0)
+		diffopt.flags = diffopt.flags | GIT_DIFF_INCLUDE_UNMODIFIED;
+	if ((opts->flags & GIT_STATUS_OPT_RECURSE_UNTRACKED_DIRS) != 0)
+		diffopt.flags = diffopt.flags | GIT_DIFF_RECURSE_UNTRACKED_DIRS;
+	/* TODO: support EXCLUDE_SUBMODULES flag */
+
+	if (show != GIT_STATUS_SHOW_WORKDIR_ONLY &&
+		(err = git_diff_index_to_tree(repo, &diffopt, head, &idx2head)) < 0)
+		goto cleanup;
 
-		if (in_head && tree_entry_type == GIT_OBJ_BLOB) {
-			status_entry_update_from_tree_entry(e, tree_entry);
-			st->tree_position++;
-		}
+	if (show != GIT_STATUS_SHOW_INDEX_ONLY &&
+		(err = git_diff_workdir_to_index(repo, &diffopt, &wd2idx)) < 0)
+		goto cleanup;
 
-		if (in_index) {
-			status_entry_update_from_index_entry(e, index_entry);
-			st->index_position++;
+	if (show == GIT_STATUS_SHOW_INDEX_THEN_WORKDIR) {
+		for (i = 0; !err && i < idx2head->deltas.length; i++) {
+			i2h = GIT_VECTOR_GET(&idx2head->deltas, i);
+			err = cb(i2h->old_file.path, index_delta2status(i2h->status), cbdata);
 		}
-
-		if (in_workdir)
-			if ((error = status_entry_update_from_workdir(
-					 e, full_path->ptr)) < GIT_SUCCESS)
-				return error;	/* The callee has already set the error message */
-
-		return store_if_changed(st, e);
+		git_diff_list_free(idx2head);
+		idx2head = NULL;
 	}
 
-	/* Are we dealing with a subtree? */
-	if (tree_entry_type == GIT_OBJ_TREE) {
-		assert(in_head && !in_index && !in_workdir);
-		return process_folder(st, tree_entry, full_path, path_type);
-	}
-
-	/* We're dealing with something else -- most likely a submodule;
-	 * skip it for now */
-	if (in_head)
-		st->tree_position++;
-	if (in_index)
-		st->index_position++;
-	return GIT_SUCCESS;
-}
-
-static int path_type_from(git_buf *full_path, int is_dir)
-{
-	if (full_path == NULL)
-		return GIT_STATUS_PATH_NULL;
-
-	if (!is_dir)
-		return GIT_STATUS_PATH_FILE;
-
-	if (!git__suffixcmp(full_path->ptr, "/" DOT_GIT "/"))
-		return GIT_STATUS_PATH_IGNORE;
-
-	return GIT_STATUS_PATH_FOLDER;
-}
-
-static const char *status_path(const char *first, const char *second, const char *third)
-{
-	/* At least one of them can not be NULL */
-	assert(first != NULL || second != NULL || third != NULL);
-
-	/* TODO: Fixme. Ensure that when non null, they're all equal */
-	if (first != NULL)
-		return first;
+	i_max = idx2head ? idx2head->deltas.length : 0;
+	j_max = wd2idx   ? wd2idx->deltas.length   : 0;
 
-	if (second != NULL)
-		return second;
+	for (i = 0, j = 0; !err && (i < i_max || j < j_max); ) {
+		i2h = idx2head ? GIT_VECTOR_GET(&idx2head->deltas,i) : NULL;
+		w2i = wd2idx   ? GIT_VECTOR_GET(&wd2idx->deltas,j)   : NULL;
 
-	return third;
-}
-
-static int compare(const char *left, const char *right)
-{
-	if (left == NULL && right == NULL)
-		return 0;
+		cmp = !w2i ? -1 : !i2h ? 1 : strcmp(i2h->old_file.path, w2i->old_file.path);
 
-	if (left == NULL)
-		return 1;
-
-	if (right == NULL)
-		return -1;
-
-	return strcmp(left, right);
-}
-
-/* Greatly inspired from JGit IndexTreeWalker */
-/* https://github.com/spearce/jgit/blob/ed47e29c777accfa78c6f50685a5df2b8f5b8ff5/org.spearce.jgit/src/org/spearce/jgit/lib/IndexTreeWalker.java#L88 */
-
-static int dirent_cb(void *state, git_buf *a)
-{
-	const git_tree_entry *m;
-	const git_index_entry *entry;
-	enum path_type path_type;
-	int cmpma, cmpmi, cmpai, error;
-	const char *pm, *pa, *pi;
-	const char *m_name, *i_name, *a_name;
-	struct status_st *st = (struct status_st *)state;
-
-	path_type = path_type_from(a, st->is_dir);
-
-	if (path_type == GIT_STATUS_PATH_IGNORE)
-		return GIT_SUCCESS;	/* Let's skip the ".git" directory */
-
-	a_name = (path_type != GIT_STATUS_PATH_NULL) ? a->ptr + st->workdir_path_len : NULL;
-
-	while (1) {
-		if (st->tree == NULL)
-			m = NULL;
-		else
-			m = git_tree_entry_byindex(st->tree, st->tree_position);
-
-		entry = git_index_get(st->index, st->index_position);
-
-		if ((m == NULL) && (a == NULL) && (entry == NULL))
-			return GIT_SUCCESS;
-
-		if (m != NULL) {
-			git_buf_truncate(&st->head_tree_relative_path,
-							 st->head_tree_relative_path_len);
-			git_buf_joinpath(&st->head_tree_relative_path,
-							 st->head_tree_relative_path.ptr, m->filename);
-			/* When the tree entry is a folder, append a forward slash to its name */
-			if (git_tree_entry_type(m) == GIT_OBJ_TREE)
-				git_path_to_dir(&st->head_tree_relative_path);
-
-			error = git_buf_lasterror(&st->head_tree_relative_path);
-			if (error < GIT_SUCCESS)
-				return git__rethrow(error, "An error occured while "
-					"determining the status of '%s'", a->ptr);
-
-			m_name = st->head_tree_relative_path.ptr;
-		} else
-			m_name = NULL;
-
-		i_name = (entry != NULL) ? entry->path : NULL;
-
-		cmpma = compare(m_name, a_name);
-		cmpmi = compare(m_name, i_name);
-		cmpai = compare(a_name, i_name);
-
-		pm = ((cmpma <= 0) && (cmpmi <= 0)) ? m_name : NULL;
-		pa = ((cmpma >= 0) && (cmpai <= 0)) ? a_name : NULL;
-		pi = ((cmpmi >= 0) && (cmpai >= 0)) ? i_name : NULL;
-
-		if ((error = determine_status(st, pm != NULL, pi != NULL, pa != NULL,
-				m, entry, a, status_path(pm, pi, pa), path_type)) < GIT_SUCCESS)
-			return git__rethrow(error, "An error occured while determining the status of '%s'", a->ptr);
-
-		if ((pa != NULL) || (path_type == GIT_STATUS_PATH_FOLDER))
-			return GIT_SUCCESS;
+		if (cmp < 0) {
+			err = cb(i2h->old_file.path, index_delta2status(i2h->status), cbdata);
+			i++;
+		} else if (cmp > 0) {
+			err = cb(w2i->old_file.path, workdir_delta2status(w2i->status), cbdata);
+			j++;
+		} else {
+			err = cb(i2h->old_file.path, index_delta2status(i2h->status) |
+					 workdir_delta2status(w2i->status), cbdata);
+			i++; j++;
+		}
 	}
-}
-
-static int status_cmp(const void *a, const void *b)
-{
-	const struct status_entry *entry_a = (const struct status_entry *)(a);
-	const struct status_entry *entry_b = (const struct status_entry *)(b);
 
-	return strcmp(entry_a->path, entry_b->path);
+cleanup:
+	git_tree_free(head);
+	git_diff_list_free(idx2head);
+	git_diff_list_free(wd2idx);
+	return err;
 }
 
-#define DEFAULT_SIZE 16
-
 int git_status_foreach(
 	git_repository *repo,
 	int (*callback)(const char *, unsigned int, void *),
 	void *payload)
 {
-	git_vector entries;
-	git_ignores ignores;
-	git_index *index = NULL;
-	git_buf temp_path = GIT_BUF_INIT;
-	struct status_st dirent_st = {0};
-	int error = GIT_SUCCESS;
-	unsigned int i;
-	git_tree *tree;
-	struct status_entry *e;
-	const char *workdir;
-
-	if ((workdir = git_repository_workdir(repo)) == NULL)
-		return git__throw(GIT_ERROR,
-			"Cannot retrieve status on a bare repository");
-
-	if ((error = git_repository_index__weakptr(&index, repo)) < GIT_SUCCESS) {
-		return git__rethrow(error,
-			"Failed to determine statuses. Index can't be opened");
-	}
-
-	if ((error = retrieve_head_tree(&tree, repo)) < GIT_SUCCESS) {
-		error = git__rethrow(error, "Failed to determine statuses");
-		goto exit;
-	}
-
-	git_vector_init(&entries, DEFAULT_SIZE, status_cmp);
-
-	dirent_st.repo = repo;
-	dirent_st.vector = &entries;
-	dirent_st.index = index;
-	dirent_st.tree = tree;
-	dirent_st.ignores = &ignores;
-	dirent_st.workdir_path_len = strlen(workdir);
-	git_buf_init(&dirent_st.head_tree_relative_path, 0);
-	dirent_st.head_tree_relative_path_len = 0;
-	dirent_st.tree_position = 0;
-	dirent_st.index_position = 0;
-	dirent_st.is_dir = 1;
-
-	if (git_path_isdir(workdir)) {
-		error = git__throw(GIT_EINVALIDPATH,
-			"Failed to determine status of file '%s'. "
-			"The given path doesn't lead to a folder", workdir);
-		goto exit;
-	}
+	git_status_options opts;
 
-	git_buf_sets(&temp_path, workdir);
+	memset(&opts, 0, sizeof(opts));
+	opts.show  = GIT_STATUS_SHOW_INDEX_AND_WORKDIR;
+	opts.flags = GIT_STATUS_OPT_INCLUDE_IGNORED |
+		GIT_STATUS_OPT_INCLUDE_UNTRACKED |
+		GIT_STATUS_OPT_RECURSE_UNTRACKED_DIRS;
 
-	error = git_ignore__for_path(repo, "", dirent_st.ignores);
-	if (error < GIT_SUCCESS)
-		goto exit;
-
-	error = alphasorted_futils_direach(
-		&temp_path, dirent_cb, &dirent_st);
-
-	if (error < GIT_SUCCESS)
-		error = git__rethrow(error,
-			"Failed to determine statuses. "
-			"An error occured while processing the working directory");
-
-	if ((error == GIT_SUCCESS) &&
-		((error = dirent_cb(&dirent_st, NULL)) < GIT_SUCCESS))
-		error = git__rethrow(error,
-			"Failed to determine statuses. "
-			"An error occured while post-processing the HEAD tree and the index");
-
-	for (i = 0; i < entries.length; ++i) {
-		e = (struct status_entry *)git_vector_get(&entries, i);
-
-		if (error == GIT_SUCCESS) {
-			error = callback(e->path, e->status_flags, payload);
-			if (error < GIT_SUCCESS)
-				error = git__rethrow(error,
-					"Failed to determine statuses. User callback failed");
-		}
-
-		git__free(e);
-	}
-
-exit:
-	git_buf_free(&dirent_st.head_tree_relative_path);
-	git_buf_free(&temp_path);
-	git_vector_free(&entries);
-	git_ignore__free(&ignores);
-	git_tree_free(tree);
-	return error;
+	return git_status_foreach_ext(repo, &opts, callback, payload);
 }
 
-static int recurse_tree_entry(git_tree *tree, struct status_entry *e, const char *path)
-{
-	char *dir_sep;
-	const git_tree_entry *tree_entry;
-	git_tree *subtree;
-	int error = GIT_SUCCESS;
-
-	dir_sep = strchr(path, '/');
-	if (!dir_sep) {
-		tree_entry = git_tree_entry_byname(tree, path);
-		if (tree_entry == NULL)
-			return GIT_SUCCESS;	/* The leaf doesn't exist in the tree*/
-
-		status_entry_update_from_tree_entry(e, tree_entry);
-		return GIT_SUCCESS;
-	}
-
-	/* Retrieve subtree name */
-	*dir_sep = '\0';
-
-	tree_entry = git_tree_entry_byname(tree, path);
-	if (tree_entry == NULL)
-		return GIT_SUCCESS;	/* The subtree doesn't exist in the tree*/
-
-	*dir_sep = '/';
-
-	/* Retreive subtree */
-	if ((error = git_tree_lookup(&subtree, tree->object.repo, &tree_entry->oid)) < GIT_SUCCESS)
-		return git__throw(GIT_EOBJCORRUPTED, "Can't find tree object '%s'", tree_entry->filename);
-
-	error = recurse_tree_entry(subtree, e, dir_sep+1);
-	git_tree_free(subtree);
-	return error;
-}
+struct status_file_info {
+	unsigned int count;
+	unsigned int status;
+	char *expected;
+};
 
-int git_status_file(unsigned int *status_flags, git_repository *repo, const char *path)
+static int get_one_status(const char *path, unsigned int status, void *data)
 {
-	struct status_entry *e;
-	git_index *index = NULL;
-	git_buf temp_path = GIT_BUF_INIT;
-	int error = GIT_SUCCESS;
-	git_tree *tree = NULL;
-	const char *workdir;
-
-	assert(status_flags && repo && path);
-
-	if ((workdir = git_repository_workdir(repo)) == NULL)
-		return git__throw(GIT_ERROR,
-			"Cannot retrieve status on a bare repository");
+	struct status_file_info *sfi = data;
 
-	if ((error = git_buf_joinpath(&temp_path, workdir, path)) < GIT_SUCCESS)
-		return git__rethrow(error,
-			"Failed to determine status of file '%s'", path);
-
-	if (git_path_isdir(temp_path.ptr) == GIT_SUCCESS) {
-		git_buf_free(&temp_path);
-		return git__throw(GIT_EINVALIDPATH,
-			"Failed to determine status of file '%s'. "
-			"Given path leads to a folder, not a file", path);
-	}
-
-	e = status_entry_new(NULL, path);
-	if (e == NULL) {
-		git_buf_free(&temp_path);
-		return GIT_ENOMEM;
-	}
-
-	/* Find file in Workdir */
-	if (git_path_exists(temp_path.ptr) == GIT_SUCCESS) {
-		if ((error = status_entry_update_from_workdir(e, temp_path.ptr)) < GIT_SUCCESS)
-			goto cleanup;	/* The callee has already set the error message */
-	}
+	sfi->count++;
+	sfi->status = status;
 
-	/* Find file in Index */
-	if ((error = git_repository_index__weakptr(&index, repo)) < GIT_SUCCESS) {
-		git__rethrow(error,
-			"Failed to determine status of file '%s'."
-			"Index can't be opened", path);
-		goto cleanup;
-	}
-
-	status_entry_update_from_index(e, index);
-
-	if ((error = retrieve_head_tree(&tree, repo)) < GIT_SUCCESS) {
-		git__rethrow(error,
-			"Failed to determine status of file '%s'", path);
-		goto cleanup;
-	}
-
-	/* If the repository is not empty, try and locate the file in HEAD */
-	if (tree != NULL) {
-		if ((error = git_buf_sets(&temp_path, path)) < GIT_SUCCESS) {
-			git__rethrow(error,
-				"Failed to determine status of file '%s'", path);
-			goto cleanup;
-		}
-
-		error = recurse_tree_entry(tree, e, temp_path.ptr);
-		if (error < GIT_SUCCESS) {
-			git__rethrow(error,
-				"Failed to determine status of file '%s'. "
-				"An error occured while processing the tree", path);
-			goto cleanup;
-		}
-	}
-
-	/* Determine status */
-	if ((error = status_entry_update_flags(e)) < GIT_SUCCESS) {
-		git__throw(error, "Nonexistent file");
-		goto cleanup;
-	}
-
-	if (status_entry_is_ignorable(e)) {
-		git_ignores ignores;
-
-		if ((error = git_ignore__for_path(repo, path, &ignores)) == GIT_SUCCESS)
-			error = status_entry_update_ignore(e, &ignores, path);
-
-		git_ignore__free(&ignores);
-
-		if (error < GIT_SUCCESS)
-			goto cleanup;
+	if (sfi->count > 1 || strcmp(sfi->expected, path) != 0) {
+		giterr_set(GITERR_INVALID,
+			"Ambiguous path '%s' given to git_status_file", sfi->expected);
+		return -1;
 	}
 
-	*status_flags = e->status_flags;
-
-cleanup:
-	git_buf_free(&temp_path);
-	git_tree_free(tree);
-	git__free(e);
-	return error;
+	return 0;
 }
 
-/*
- * git_path_direach is not supposed to return entries in an ordered manner.
- * alphasorted_futils_direach wraps git_path_direach and invokes the callback
- * function by passing it alphabeticcally sorted paths parameters.
- *
- */
-
-static char *alphasorted_dirent_info_new(const git_buf *path)
+int git_status_file(
+	unsigned int *status_flags,
+	git_repository *repo,
+	const char *path)
 {
-	char *di = git__malloc(path->size + 2);
-	if (!di)
-		return di;
-
-	git_buf_copy_cstr(di, path->size + 1, path);
-
-	if (git_path_isdir(path->ptr) == GIT_SUCCESS) {
-		/*
-		 * Append a forward slash to the name to force folders
-		 * to be ordered in a similar way than in a tree
-		 *
-		 * The file "subdir" should appear before the file "subdir.txt"
-		 * The folder "subdir" should appear after the file "subdir.txt"
-		 */
-		di[path->size] = '/';
-		di[path->size + 1] = '\0';
-	}
+	int error;
+	git_status_options opts;
+	struct status_file_info sfi;
 
-	return di;
-}
+	assert(status_flags && repo && path);
 
-static int alphasorted_dirent_cb(void *state, git_buf *full_path)
-{
-	char *entry;
-	git_vector *entry_names;
+	memset(&sfi, 0, sizeof(sfi));
+	if ((sfi.expected = git__strdup(path)) == NULL)
+		return -1;
 
-	entry_names = (git_vector *)state;
-	entry = alphasorted_dirent_info_new(full_path);
+	memset(&opts, 0, sizeof(opts));
+	opts.show  = GIT_STATUS_SHOW_INDEX_AND_WORKDIR;
+	opts.flags = GIT_STATUS_OPT_INCLUDE_IGNORED |
+		GIT_STATUS_OPT_INCLUDE_UNTRACKED |
+		GIT_STATUS_OPT_RECURSE_UNTRACKED_DIRS |
+		GIT_STATUS_OPT_INCLUDE_UNMODIFIED;
+	opts.pathspec.count = 1;
+	opts.pathspec.strings = &sfi.expected;
 
-	if (entry == NULL)
-		return GIT_ENOMEM;
+	error = git_status_foreach_ext(repo, &opts, get_one_status, &sfi);
 
-	if (git_vector_insert(entry_names, entry) < GIT_SUCCESS) {
-		git__free(entry);
-		return GIT_ENOMEM;
+	if (!error && !sfi.count) {
+		giterr_set(GITERR_INVALID,
+			"Attempt to get status of nonexistent file '%s'", path);
+		error = GIT_ENOTFOUND;
 	}
 
-	return GIT_SUCCESS;
-}
-
-static int alphasorted_futils_direach(
-	git_buf *path,
-	int (*fn)(void *, git_buf *),
-	void *arg)
-{
-	char *entry;
-	git_vector entry_names;
-	unsigned int idx;
-	int error = GIT_SUCCESS;
-	git_buf entry_path = GIT_BUF_INIT;
-
-	if (git_vector_init(&entry_names, 16, git__strcmp_cb) < GIT_SUCCESS)
-		return GIT_ENOMEM;
-
-	error = git_path_direach(path, alphasorted_dirent_cb, &entry_names);
-
-	git_vector_sort(&entry_names);
-
-	for (idx = 0; idx < entry_names.length; ++idx) {
-		entry = (char *)git_vector_get(&entry_names, idx);
-
-		/* We have to walk the entire vector even if there was an error,
-		 * in order to free up memory, but we stop making callbacks after
-		 * an error.
-		 */
-		if (error == GIT_SUCCESS)
-			error = git_buf_sets(&entry_path, entry);
-
-		if (error == GIT_SUCCESS) {
-			((struct status_st *)arg)->is_dir =
-				(entry[entry_path.size - 1] == '/');
-			error = fn(arg, &entry_path);
-		}
+	*status_flags = sfi.status;
 
-		git__free(entry);
-	}
+	git__free(sfi.expected);
 
-	git_buf_free(&entry_path);
-	git_vector_free(&entry_names);
 	return error;
 }
 
-
-int git_status_should_ignore(git_repository *repo, const char *path, int *ignored)
+int git_status_should_ignore(
+	int *ignored,
+	git_repository *repo,
+	const char *path)
 {
 	int error;
 	git_ignores ignores;
 
-	if ((error = git_ignore__for_path(repo, path, &ignores)) == GIT_SUCCESS)
-		error = git_ignore__lookup(&ignores, path, ignored);
+	if (git_ignore__for_path(repo, path, &ignores) < 0)
+		return -1;
 
+	error = git_ignore__lookup(&ignores, path, ignored);
 	git_ignore__free(&ignores);
-
 	return error;
 }