Create new function create_notes_commit() which is slightly more general than
commit_notes() (accepts multiple commit parents and does not auto-update the
notes ref). This function will be used by the notes-merge functionality in
future patches.
Also rewrite builtin/notes.c:commit_notes() to reuse this new function.
Signed-off-by: Johan Herland <johan@xxxxxxxxxxx>
---
builtin.h | 2 +-
builtin/notes.c | 28 +++++-----------------------
notes-merge.c | 27 +++++++++++++++++++++++++++
notes-merge.h | 14 ++++++++++++++
4 files changed, 47 insertions(+), 24 deletions(-)
diff --git a/builtin.h b/builtin.h
index ed6ee26..908d850 100644
--- a/builtin.h
+++ b/builtin.h
@@ -17,7 +17,7 @@ extern void prune_packed_objects(int);
extern int fmt_merge_msg(int merge_summary, struct strbuf *in,
struct strbuf *out);
extern int fmt_merge_msg_shortlog(struct strbuf *in, struct strbuf *out);
-extern int commit_notes(struct notes_tree *t, const char *msg);
+extern void commit_notes(struct notes_tree *t, const char *msg);
struct notes_rewrite_cfg {
struct notes_tree **trees;
diff --git a/builtin/notes.c b/builtin/notes.c
index fbabdc7..97d8baa 100644
--- a/builtin/notes.c
+++ b/builtin/notes.c
@@ -288,18 +288,17 @@ static int parse_reedit_arg(const struct option *opt, const char *arg, int unset
return parse_reuse_arg(opt, arg, unset);
}
-int commit_notes(struct notes_tree *t, const char *msg)
+void commit_notes(struct notes_tree *t, const char *msg)
{
- struct commit_list *parent;
- unsigned char tree_sha1[20], prev_commit[20], new_commit[20];
struct strbuf buf = STRBUF_INIT;
+ unsigned char commit_sha1[20];
if (!t)
t = &default_notes_tree;
if (!t->initialized || !t->ref || !*t->ref)
die("Cannot commit uninitialized/unreferenced notes tree");
if (!t->dirty)
- return 0; /* don't have to commit an unchanged tree */
+ return; /* don't have to commit an unchanged tree */
/* Prepare commit message and reflog message */
strbuf_addstr(&buf, "notes: "); /* commit message starts at index 7 */
@@ -307,27 +306,10 @@ int commit_notes(struct notes_tree *t, const char *msg)
if (buf.buf[buf.len - 1] != '\n')
strbuf_addch(&buf, '\n'); /* Make sure msg ends with newline */
- /* Convert notes tree to tree object */
- if (write_notes_tree(t, tree_sha1))
- die("Failed to write current notes tree to database");
-
- /* Create new commit for the tree object */
- if (!read_ref(t->ref, prev_commit)) { /* retrieve parent commit */
- parent = xmalloc(sizeof(*parent));
- parent->item = lookup_commit(prev_commit);
- parent->next = NULL;
- } else {
- hashclr(prev_commit);
- parent = NULL;
- }
- if (commit_tree(buf.buf + 7, tree_sha1, parent, new_commit, NULL))
- die("Failed to commit notes tree to database");
-
- /* Update notes ref with new commit */
- update_ref(buf.buf, t->ref, new_commit, prev_commit, 0, DIE_ON_ERR);
+ create_notes_commit(t, NULL, buf.buf + 7, commit_sha1);
+ update_ref(buf.buf, t->ref, commit_sha1, NULL, 0, DIE_ON_ERR);
strbuf_release(&buf);
- return 0;
}
combine_notes_fn parse_combine_notes_fn(const char *v)
diff --git a/notes-merge.c b/notes-merge.c
index 293848a..fc978c4 100644
--- a/notes-merge.c
+++ b/notes-merge.c
@@ -1,5 +1,6 @@
#include "cache.h"
#include "commit.h"
+#include "notes.h"
#include "notes-merge.h"
void init_notes_merge_options(struct notes_merge_options *o)
@@ -16,6 +17,32 @@ static int show(struct notes_merge_options *o, int v)
#define OUTPUT(o, v, ...) \
do { if (show((o), (v))) { printf(__VA_ARGS__); puts(""); } } while (0)
+void create_notes_commit(struct notes_tree *t, struct commit_list *parents,
+ const char *msg, unsigned char *result_sha1)
+{
+ unsigned char tree_sha1[20];
+
+ assert(t->initialized);
+
+ if (write_notes_tree(t, tree_sha1))
+ die("Failed to write notes tree to database");
+
+ if (!parents) {
+ /* Deduce parent commit from t->ref */
+ unsigned char parent_sha1[20];
+ if (!read_ref(t->ref, parent_sha1)) {
+ struct commit *parent = lookup_commit(parent_sha1);
+ if (!parent || parse_commit(parent))
+ die("Failed to find/parse commit %s", t->ref);
+ commit_list_insert(parent, &parents);
+ }
+ /* else: t->ref points to nothing, assume root/orphan commit */
+ }
+
+ if (commit_tree(msg, tree_sha1, parents, result_sha1, NULL))
+ die("Failed to commit notes tree to database");
+}
+
int notes_merge(struct notes_merge_options *o,
unsigned char *result_sha1)
{
diff --git a/notes-merge.h b/notes-merge.h
index bd1e530..2319c12 100644
--- a/notes-merge.h
+++ b/notes-merge.h
@@ -15,6 +15,20 @@ struct notes_merge_options {
void init_notes_merge_options(struct notes_merge_options *o);
/*
+ * Create new notes commit from the given notes tree
+ *
+ * Properties of the created commit:
+ * - tree: the result of converting t to a tree object with write_notes_tree().
+ * - parents: the given parents OR (if NULL) the commit referenced by t->ref.
+ * - author/committer: the default determined by commmit_tree().
+ * - commit message: msg
+ *
+ * The resulting commit SHA1 is stored in result_sha1.
+ */
+void create_notes_commit(struct notes_tree *t, struct commit_list *parents,
+ const char *msg, unsigned char *result_sha1);
+
+/*
* Merge notes from o->remote_ref into o->local_ref
*
* The commits given by the two refs are merged, producing one of the following
--
1.7.3.1.104.g92b87a
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