From: Pratik Karki <predatoramigo@gmail.com>
To: git@vger.kernel.org
Cc: christian.couder@gmail.com, Johannes.Schindelin@gmx.de,
sbeller@google.com, alban.gruin@gmail.com,
Pratik Karki <predatoramigo@gmail.com>
Subject: [PATCH 4/5] sequencer: refactor the code to detach HEAD to checkout.c
Date: Thu, 28 Jun 2018 13:31:54 +0545 [thread overview]
Message-ID: <20180628074655.5756-5-predatoramigo@gmail.com> (raw)
In-Reply-To: <20180628074655.5756-1-predatoramigo@gmail.com>
The motivation behind this commit is to extract the core part of
do_reset() from sequencer.c and move it to a new detach_head_to()
function in checkout.c.
Here the index only gets locked after performing the first part of
`do_reset()` rather than before which essentially derives the `oid`
from the specified label/name passed to the `do_reset()` function.
It also fixes two bugs: there were two `return error()` statements in
the `[new root]` case that would have failed to unlock the index.
The new function will be used in the next commit by the builtin rebase,
to perform the initial checkout.
Signed-off-by: Pratik Karki <predatoramigo@gmail.com>
---
checkout.c | 64 +++++++++++++++++++++++++++++++++++++++++++++++++++++
checkout.h | 3 +++
sequencer.c | 58 +++++-------------------------------------------
3 files changed, 72 insertions(+), 53 deletions(-)
diff --git a/checkout.c b/checkout.c
index bdefc888b..da68915fd 100644
--- a/checkout.c
+++ b/checkout.c
@@ -2,6 +2,11 @@
#include "remote.h"
#include "refspec.h"
#include "checkout.h"
+#include "unpack-trees.h"
+#include "lockfile.h"
+#include "refs.h"
+#include "tree.h"
+#include "cache-tree.h"
struct tracking_name_data {
/* const */ char *src_ref;
@@ -42,3 +47,62 @@ const char *unique_tracking_name(const char *name, struct object_id *oid)
free(cb_data.dst_ref);
return NULL;
}
+
+int detach_head_to(struct object_id *oid, const char *action,
+ const char *reflog_message)
+{
+ struct strbuf ref_name = STRBUF_INIT;
+ struct tree_desc desc;
+ struct lock_file lock = LOCK_INIT;
+ struct unpack_trees_options unpack_tree_opts;
+ struct tree *tree;
+ int ret = 0;
+
+ if (hold_locked_index(&lock, LOCK_REPORT_ON_ERROR) < 0)
+ return -1;
+
+ memset(&unpack_tree_opts, 0, sizeof(unpack_tree_opts));
+ setup_unpack_trees_porcelain(&unpack_tree_opts, action);
+ unpack_tree_opts.head_idx = 1;
+ unpack_tree_opts.src_index = &the_index;
+ unpack_tree_opts.dst_index = &the_index;
+ unpack_tree_opts.fn = oneway_merge;
+ unpack_tree_opts.merge = 1;
+ unpack_tree_opts.update = 1;
+
+ if (read_cache_unmerged()) {
+ rollback_lock_file(&lock);
+ strbuf_release(&ref_name);
+ return error_resolve_conflict(_(action));
+ }
+
+ if (!fill_tree_descriptor(&desc, oid)) {
+ error(_("failed to find tree of %s"), oid_to_hex(oid));
+ rollback_lock_file(&lock);
+ free((void *)desc.buffer);
+ strbuf_release(&ref_name);
+ return -1;
+ }
+
+ if (unpack_trees(1, &desc, &unpack_tree_opts)) {
+ rollback_lock_file(&lock);
+ free((void *)desc.buffer);
+ strbuf_release(&ref_name);
+ return -1;
+ }
+
+ tree = parse_tree_indirect(oid);
+ prime_cache_tree(&the_index, tree);
+
+ if (write_locked_index(&the_index, &lock, COMMIT_LOCK) < 0)
+ ret = error(_("could not write index"));
+ free((void *)desc.buffer);
+
+ if (!ret)
+ ret = update_ref(reflog_message, "HEAD", oid,
+ NULL, 0, UPDATE_REFS_MSG_ON_ERR);
+
+ strbuf_release(&ref_name);
+ return ret;
+
+}
diff --git a/checkout.h b/checkout.h
index 998071117..6ce46cf4e 100644
--- a/checkout.h
+++ b/checkout.h
@@ -10,4 +10,7 @@
*/
extern const char *unique_tracking_name(const char *name, struct object_id *oid);
+int detach_head_to(struct object_id *oid, const char *action,
+ const char *reflog_message);
+
#endif /* CHECKOUT_H */
diff --git a/sequencer.c b/sequencer.c
index 5354d4d51..106d518f4 100644
--- a/sequencer.c
+++ b/sequencer.c
@@ -29,6 +29,7 @@
#include "oidset.h"
#include "commit-slab.h"
#include "alias.h"
+#include "checkout.h"
#define GIT_REFLOG_ACTION "GIT_REFLOG_ACTION"
@@ -2756,14 +2757,7 @@ static int do_reset(const char *name, int len, struct replay_opts *opts)
{
struct strbuf ref_name = STRBUF_INIT;
struct object_id oid;
- struct lock_file lock = LOCK_INIT;
- struct tree_desc desc;
- struct tree *tree;
- struct unpack_trees_options unpack_tree_opts;
- int ret = 0, i;
-
- if (hold_locked_index(&lock, LOCK_REPORT_ON_ERROR) < 0)
- return -1;
+ int i;
if (len == 10 && !strncmp("[new root]", name, len)) {
if (!opts->have_squash_onto) {
@@ -2789,56 +2783,14 @@ static int do_reset(const char *name, int len, struct replay_opts *opts)
if (get_oid(ref_name.buf, &oid) &&
get_oid(ref_name.buf + strlen("refs/rewritten/"), &oid)) {
error(_("could not read '%s'"), ref_name.buf);
- rollback_lock_file(&lock);
strbuf_release(&ref_name);
return -1;
}
}
- memset(&unpack_tree_opts, 0, sizeof(unpack_tree_opts));
- setup_unpack_trees_porcelain(&unpack_tree_opts, "reset");
- unpack_tree_opts.head_idx = 1;
- unpack_tree_opts.src_index = &the_index;
- unpack_tree_opts.dst_index = &the_index;
- unpack_tree_opts.fn = oneway_merge;
- unpack_tree_opts.merge = 1;
- unpack_tree_opts.update = 1;
-
- if (read_cache_unmerged()) {
- rollback_lock_file(&lock);
- strbuf_release(&ref_name);
- return error_resolve_conflict(_(action_name(opts)));
- }
-
- if (!fill_tree_descriptor(&desc, &oid)) {
- error(_("failed to find tree of %s"), oid_to_hex(&oid));
- rollback_lock_file(&lock);
- free((void *)desc.buffer);
- strbuf_release(&ref_name);
- return -1;
- }
-
- if (unpack_trees(1, &desc, &unpack_tree_opts)) {
- rollback_lock_file(&lock);
- free((void *)desc.buffer);
- strbuf_release(&ref_name);
- return -1;
- }
-
- tree = parse_tree_indirect(&oid);
- prime_cache_tree(&the_index, tree);
-
- if (write_locked_index(&the_index, &lock, COMMIT_LOCK) < 0)
- ret = error(_("could not write index"));
- free((void *)desc.buffer);
-
- if (!ret)
- ret = update_ref(reflog_message(opts, "reset", "'%.*s'",
- len, name), "HEAD", &oid,
- NULL, 0, UPDATE_REFS_MSG_ON_ERR);
-
- strbuf_release(&ref_name);
- return ret;
+ return detach_head_to(&oid, action_name(opts),
+ reflog_message(opts, "reset", "'%.*s'",
+ len, name));
}
static int do_merge(struct commit *commit, const char *arg, int arg_len,
--
2.18.0
next prev parent reply other threads:[~2018-06-28 7:48 UTC|newest]
Thread overview: 61+ messages / expand[flat|nested] mbox.gz Atom feed top
2018-06-28 7:46 [GSoC] [PATCH 0/5] rebase: rewrite rebase in C Pratik Karki
2018-06-28 7:46 ` [PATCH 1/5] Start TODO-rebase.sh Pratik Karki
2018-06-28 9:17 ` Pratik Karki
2018-06-28 7:46 ` [PATCH 2/5] rebase: start implementing it as a builtin Pratik Karki
2018-06-28 8:08 ` Christian Couder
2018-06-28 18:49 ` Stefan Beller
2018-06-28 7:46 ` [PATCH 3/5] rebase: refactor common shell functions into their own file Pratik Karki
2018-06-28 8:02 ` Christian Couder
2018-06-28 19:17 ` Stefan Beller
2018-06-28 7:46 ` Pratik Karki [this message]
2018-06-28 8:14 ` [PATCH 4/5] sequencer: refactor the code to detach HEAD to checkout.c Christian Couder
2018-06-28 21:19 ` Stefan Beller
2018-06-28 7:46 ` [PATCH 5/5] builtin/rebase: support running "git rebase <upstream>" Pratik Karki
2018-06-28 21:58 ` Stefan Beller
2018-07-02 9:15 ` [GSoC] [PATCH v2 0/4] rebase: rewrite rebase in C Pratik Karki
2018-07-02 9:15 ` [PATCH v2 1/4] rebase: start implementing it as a builtin Pratik Karki
2018-07-03 21:09 ` Junio C Hamano
2018-07-02 9:15 ` [PATCH v2 2/4] rebase: refactor common shell functions into their own file Pratik Karki
2018-07-03 21:13 ` Junio C Hamano
2018-07-02 9:15 ` [PATCH v2 3/4] sequencer: refactor the code to detach HEAD to checkout.c Pratik Karki
2018-07-03 21:26 ` Junio C Hamano
2018-07-02 9:15 ` [PATCH v2 4/4] builtin/rebase: support running "git rebase <upstream>" Pratik Karki
2018-07-03 21:42 ` Junio C Hamano
2018-07-06 12:08 ` [GSoC] [PATCH v3 0/4] rebase: rewrite rebase in C Pratik Karki
2018-07-06 12:08 ` [PATCH v3 1/4] rebase: start implementing it as a builtin Pratik Karki
2018-07-06 21:09 ` Junio C Hamano
2018-07-06 12:08 ` [PATCH v3 2/4] rebase: refactor common shell functions into their own file Pratik Karki
2018-07-06 12:36 ` Johannes Schindelin
2018-07-06 12:08 ` [PATCH v3 3/4] sequencer: refactor the code to detach HEAD to checkout.c Pratik Karki
2018-07-06 12:08 ` [PATCH v3 4/4] builtin/rebase: support running "git rebase <upstream>" Pratik Karki
2018-07-06 21:30 ` Junio C Hamano
2018-07-07 6:45 ` Christian Couder
2018-07-07 11:59 ` Johannes Schindelin
2018-07-07 16:24 ` Junio C Hamano
2018-07-17 21:49 ` Beat Bolli
2018-07-17 21:55 ` Beat Bolli
2018-07-08 18:01 ` [GSoC] [PATCH v4 0/4] rebase: rewrite rebase in C Pratik Karki
2018-07-08 18:01 ` [PATCH v4 1/4] rebase: start implementing it as a builtin Pratik Karki
2018-07-09 7:59 ` Andrei Rybak
2018-07-09 8:36 ` Eric Sunshine
2018-07-09 17:18 ` Pratik Karki
2018-07-22 9:14 ` Duy Nguyen
2018-07-08 18:01 ` [PATCH v4 2/4] rebase: refactor common shell functions into their own file Pratik Karki
2018-07-08 18:01 ` [PATCH v4 3/4] sequencer: refactor the code to detach HEAD to checkout.c Pratik Karki
2018-07-08 21:31 ` Johannes Schindelin
2018-07-09 17:23 ` Pratik Karki
2018-07-09 16:42 ` Junio C Hamano
2018-07-09 17:20 ` Pratik Karki
2018-07-08 18:01 ` [PATCH v4 4/4] builtin/rebase: support running "git rebase <upstream>" Pratik Karki
2018-07-08 21:44 ` Johannes Schindelin
2018-07-08 21:14 ` [GSoC] [PATCH v4 0/4] rebase: rewrite rebase in C Johannes Schindelin
2018-07-30 16:29 ` [GSoC] [PATCH v5 0/3] " Pratik Karki
2018-07-30 16:29 ` [PATCH v5 1/3] rebase: start implementing it as a builtin Pratik Karki
2018-07-30 16:29 ` [PATCH v5 2/3] rebase: refactor common shell functions into their own file Pratik Karki
2018-07-30 16:29 ` [PATCH v5 3/3] builtin/rebase: support running "git rebase <upstream>" Pratik Karki
2018-08-01 0:17 ` [GSoC] [PATCH v5 0/3] rebase: rewrite rebase in C Pratik Karki
2018-08-06 19:31 ` [GSoC] [PATCH v6 " Pratik Karki
2018-08-06 19:31 ` [GSoC] [PATCH v6 1/3] rebase: start implementing it as a builtin Pratik Karki
2018-08-06 19:31 ` [GSoC] [PATCH v6 2/3] rebase: refactor common shell functions into their own file Pratik Karki
2018-08-06 19:31 ` [GSoC] [PATCH v6 3/3] builtin/rebase: support running "git rebase <upstream>" Pratik Karki
2018-08-16 21:43 ` Junio C Hamano
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