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From: Alban Gruin <alban.gruin@gmail.com>
To: git@vger.kernel.org
Cc: Christian Couder <christian.couder@gmail.com>,
	Thomas Gummerer <t.gummerer@gmail.com>,
	Junio C Hamano <gitster@pobox.com>,
	Son Luong Ngoc <sluongng@gmail.com>,
	Alban Gruin <alban.gruin@gmail.com>
Subject: [PATCH v2 4/6] stash: remove the second index in save_untracked_files()
Date: Tue, 30 Jun 2020 17:15:56 +0200
Message-ID: <20200630151558.20975-5-alban.gruin@gmail.com> (raw)
In-Reply-To: <20200630151558.20975-1-alban.gruin@gmail.com>

This removes the second index used in save_untracked_files().

This functions creates a new commit with no parents, and a tree
containing only untracked files, so the tree is reset to the empty tree
at the beginning (hence the need for reset_tree() to accept constant
trees).  The environment of `update-index' is no longer updated, and the
index is discarded after this command exits.

As the only caller of this function is do_create_stash(), and the next
user of the index is either save_untracked_files() or stash_patch(),
which both want a different tree, the index is left as-is at the end.

Signed-off-by: Alban Gruin <alban.gruin@gmail.com>
---
 builtin/stash.c | 39 +++++++++++++++++----------------------
 1 file changed, 17 insertions(+), 22 deletions(-)

diff --git a/builtin/stash.c b/builtin/stash.c
index eaeb7bc8c4..cbe37cd24b 100644
--- a/builtin/stash.c
+++ b/builtin/stash.c
@@ -954,41 +954,36 @@ static int check_changes(const struct pathspec *ps, int include_untracked,
 static int save_untracked_files(struct stash_info *info, struct strbuf *msg,
 				struct strbuf files)
 {
-	int ret = 0;
 	struct strbuf untracked_msg = STRBUF_INIT;
 	struct child_process cp_upd_index = CHILD_PROCESS_INIT;
-	struct index_state istate = { NULL };
+
+	if (reset_tree(the_hash_algo->empty_tree, 0, 1))
+		return -1;
 
 	cp_upd_index.git_cmd = 1;
 	argv_array_pushl(&cp_upd_index.args, "update-index", "-z", "--add",
 			 "--remove", "--stdin", NULL);
-	argv_array_pushf(&cp_upd_index.env_array, "GIT_INDEX_FILE=%s",
-			 stash_index_path.buf);
+
+	if (pipe_command(&cp_upd_index, files.buf, files.len, NULL, 0,
+			 NULL, 0))
+		return -1;
+
+	discard_cache();
+	if (write_cache_as_tree(&info->u_tree, 0, NULL))
+		return -1;
 
 	strbuf_addf(&untracked_msg, "untracked files on %s\n", msg->buf);
-	if (pipe_command(&cp_upd_index, files.buf, files.len, NULL, 0,
-			 NULL, 0)) {
-		ret = -1;
-		goto done;
-	}
-
-	if (write_index_as_tree(&info->u_tree, &istate, stash_index_path.buf, 0,
-				NULL)) {
-		ret = -1;
-		goto done;
-	}
-
 	if (commit_tree(untracked_msg.buf, untracked_msg.len,
 			&info->u_tree, NULL, &info->u_commit, NULL, NULL)) {
-		ret = -1;
-		goto done;
+		strbuf_release(&untracked_msg);
+		return -1;
 	}
 
-done:
-	discard_index(&istate);
+	/* Do not reset the tree, as either stash_patch() or
+	 * stash_working_tree() will do it. */
+
 	strbuf_release(&untracked_msg);
-	remove_path(stash_index_path.buf);
-	return ret;
+	return 0;
 }
 
 static int stash_patch(struct stash_info *info, const struct pathspec *ps,
-- 
2.20.1


  parent reply index

Thread overview: 44+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2020-05-05 10:48 [RFC PATCH v1 0/6] stash: drop usage of a second index Alban Gruin
2020-05-05 10:48 ` [RFC PATCH v1 1/6] stash: mark `i_tree' in reset_tree() const Alban Gruin
2020-06-13  8:09   ` Christian Couder
2020-05-05 10:48 ` [RFC PATCH v1 2/6] stash: remove the second index in stash_working_tree() Alban Gruin
2020-06-13  8:52   ` Christian Couder
2020-06-13 18:00     ` Alban Gruin
2020-06-15 12:02       ` Christian Couder
2020-05-05 10:48 ` [RFC PATCH v1 3/6] stash: remove the second index in stash_patch() Alban Gruin
2020-06-13  9:38   ` Christian Couder
2020-06-13 10:04     ` Christian Couder
2020-05-05 10:48 ` [RFC PATCH v1 4/6] stash: remove the second index in save_untracked_files() Alban Gruin
2020-06-13 18:51   ` Christian Couder
2020-05-05 10:48 ` [RFC PATCH v1 5/6] stash: remove the second index in restore_untracked() Alban Gruin
2020-06-13 19:41   ` Christian Couder
2020-05-05 10:48 ` [RFC PATCH v1 6/6] stash: remove `stash_index_path' Alban Gruin
2020-06-04 12:07 ` [RFC PATCH v1 0/6] stash: drop usage of a second index Alban Gruin
2020-06-13  7:52 ` Christian Couder
2020-06-25 12:35   ` Alban Gruin
2020-06-15 15:27 ` SZEDER Gábor
2020-06-15 21:50   ` SZEDER Gábor
2020-06-16  7:06     ` SZEDER Gábor
2020-06-17 20:04       ` Junio C Hamano
2020-06-17 21:31         ` Alban Gruin
2020-06-30 15:15 ` [PATCH v2 " Alban Gruin
2020-06-30 15:15   ` [PATCH v2 1/6] stash: mark `i_tree' in reset_tree() const Alban Gruin
2020-06-30 15:15   ` [PATCH v2 2/6] stash: remove the second index in stash_working_tree() Alban Gruin
2020-06-30 15:15   ` [PATCH v2 3/6] stash: remove the second index in stash_patch() Alban Gruin
2020-06-30 15:15   ` Alban Gruin [this message]
2020-06-30 15:15   ` [PATCH v2 5/6] stash: remove the second index in restore_untracked() Alban Gruin
2020-07-31 13:45     ` Christian Couder
2020-07-31 16:16       ` Alban Gruin
2020-06-30 15:15   ` [PATCH v2 6/6] stash: remove `stash_index_path' Alban Gruin
2020-07-31 13:53   ` [PATCH v2 0/6] stash: drop usage of a second index Christian Couder
2020-07-31 16:51   ` [PATCH v3 " Alban Gruin
2020-07-31 16:51     ` [PATCH v3 1/6] stash: mark `i_tree' in reset_tree() const Alban Gruin
2020-07-31 18:28       ` Junio C Hamano
2020-07-31 16:51     ` [PATCH v3 2/6] stash: remove the second index in stash_working_tree() Alban Gruin
2020-07-31 18:26       ` Junio C Hamano
2020-08-02  2:20         ` Junio C Hamano
2020-07-31 16:51     ` [PATCH v3 3/6] stash: remove the second index in stash_patch() Alban Gruin
2020-07-31 16:51     ` [PATCH v3 4/6] stash: remove the second index in save_untracked_files() Alban Gruin
2020-07-31 16:51     ` [PATCH v3 5/6] stash: remove the second index in restore_untracked() Alban Gruin
2020-07-31 16:51     ` [PATCH v3 6/6] stash: remove `stash_index_path' Alban Gruin
2020-07-31 17:48     ` [PATCH v3 0/6] stash: drop usage of a second index Junio C Hamano

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