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convert log_ref_write_fd() to use strbuf

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Since we don't care about how many bytes were written, simplify the return
value logic.

log_ref_write_fd() was written long before strbuf was fleshed out. Remove
the old manual buffer management code and replace it with strbuf(). Also
update copy_reflog_msg() which is called only by log_ref_write_fd() to use
strbuf as it keeps things consistent.

Signed-off-by: Ben Peart <Ben.Peart@microsoft.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
This commit is contained in:
Ben Peart
2018-07-10 21:08:22 +00:00
committed by Junio C Hamano
parent e3331758f1
commit 80a6c2073b
3 changed files with 17 additions and 31 deletions
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29
refs/files-backend.c
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@ -1582,26 +1582,17 @@ static int log_ref_write_fd(int fd, const struct object_id *old_oid,
const struct object_id *new_oid,
const char *committer, const char *msg)
{
int msglen, written;
unsigned maxlen, len;
char *logrec;
struct strbuf sb = STRBUF_INIT;
int ret = 0;
msglen = msg ? strlen(msg) : 0;
maxlen = strlen(committer) + msglen + 100;
logrec = xmalloc(maxlen);
len = xsnprintf(logrec, maxlen, "%s %s %s\n",
oid_to_hex(old_oid),
oid_to_hex(new_oid),
committer);
if (msglen)
len += copy_reflog_msg(logrec + len - 1, msg) - 1;
written = len <= maxlen ? write_in_full(fd, logrec, len) : -1;
free(logrec);
if (written < 0)
return -1;
return 0;
strbuf_addf(&sb, "%s %s %s", oid_to_hex(old_oid), oid_to_hex(new_oid), committer);
if (msg && *msg)
copy_reflog_msg(&sb, msg);
strbuf_addch(&sb, '\n');
if (write_in_full(fd, sb.buf, sb.len) < 0)
ret = -1;
strbuf_release(&sb);
return ret;
}
static int files_log_ref_write(struct files_ref_store *refs,