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authorJeff King <peff@peff.net>2011-07-22 16:12:23 (GMT)
committerJunio C Hamano <gitster@pobox.com>2011-07-22 20:54:57 (GMT)
commitd04520e3446acdcbdf1d30c812aa31d6a003c171 (patch)
tree3bbef2f4283be922cc9f8a61c82b8f03e24f0808 /builtin/reset.c
parent0dc310e8608c05f40be3390607f301ffc4284e6d (diff)
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reset: give better reflog messages
The reset command creates its reflog entry from argv. However, it does so after having run parse_options, which means the only thing left in argv is any non-option arguments. Thus you would end up with confusing reflog entries like: $ git reset --hard HEAD^ $ git reset --soft HEAD@{1} $ git log -2 -g --oneline 8e46cad HEAD@{0}: HEAD@{1}: updating HEAD 1eb9486 HEAD@{1}: HEAD^: updating HEAD However, we must also consider that some scripts may set GIT_REFLOG_ACTION before calling reset, and we need to show their reflog action (with our text appended). For example: rebase -i (squash): updating HEAD On top of that, we also set the ORIG_HEAD reflog action (even though it doesn't generally exist). In that case, the reset argument is somewhat meaningless, as it has nothing to do with what's in ORIG_HEAD. This patch changes the reset reflog code to show: $GIT_REFLOG_ACTION: updating {HEAD,ORIG_HEAD} as before, but only if GIT_REFLOG_ACTION is set. Otherwise, show: reset: moving to $rev for HEAD, and: reset: updating ORIG_HEAD for ORIG_HEAD (this is still somewhat superfluous, since we are in the ORIG_HEAD reflog, obviously, but at least we now mention which command was used to update it). While we're at it, we can clean up the code a bit: - Use strbufs to make the message. - Use the "rev" parameter instead of showing all options. This makes more sense, since it is the only thing impacting the writing of the ref. Signed-off-by: Jeff King <peff@peff.net> Signed-off-by: Junio C Hamano <gitster@pobox.com>
Diffstat (limited to 'builtin/reset.c')
-rw-r--r--builtin/reset.c49
1 files changed, 16 insertions, 33 deletions
diff --git a/builtin/reset.c b/builtin/reset.c
index 98bca04..27b3426 100644
--- a/builtin/reset.c
+++ b/builtin/reset.c
@@ -33,25 +33,6 @@ static const char *reset_type_names[] = {
N_("mixed"), N_("soft"), N_("hard"), N_("merge"), N_("keep"), NULL
};
-static char *args_to_str(const char **argv)
-{
- char *buf = NULL;
- unsigned long len, space = 0, nr = 0;
-
- for (; *argv; argv++) {
- len = strlen(*argv);
- ALLOC_GROW(buf, nr + 1 + len, space);
- if (nr)
- buf[nr++] = ' ';
- memcpy(buf + nr, *argv, len);
- nr += len;
- }
- ALLOC_GROW(buf, nr + 1, space);
- buf[nr] = '\0';
-
- return buf;
-}
-
static inline int is_merge(void)
{
return !access(git_path("MERGE_HEAD"), F_OK);
@@ -215,14 +196,18 @@ static int read_from_tree(const char *prefix, const char **argv,
return update_index_refresh(index_fd, lock, refresh_flags);
}
-static void prepend_reflog_action(const char *action, char *buf, size_t size)
+static void set_reflog_message(struct strbuf *sb, const char *action,
+ const char *rev)
{
- const char *sep = ": ";
const char *rla = getenv("GIT_REFLOG_ACTION");
- if (!rla)
- rla = sep = "";
- if (snprintf(buf, size, "%s%s%s", rla, sep, action) >= size)
- warning(_("Reflog action message too long: %.*s..."), 50, buf);
+
+ strbuf_reset(sb);
+ if (rla)
+ strbuf_addf(sb, "%s: %s", rla, action);
+ else if (rev)
+ strbuf_addf(sb, "reset: moving to %s", rev);
+ else
+ strbuf_addf(sb, "reset: %s", action);
}
static void die_if_unmerged_cache(int reset_type)
@@ -241,7 +226,7 @@ int cmd_reset(int argc, const char **argv, const char *prefix)
unsigned char sha1[20], *orig = NULL, sha1_orig[20],
*old_orig = NULL, sha1_old_orig[20];
struct commit *commit;
- char *reflog_action, msg[1024];
+ struct strbuf msg = STRBUF_INIT;
const struct option options[] = {
OPT__QUIET(&quiet, "be quiet, only report errors"),
OPT_SET_INT(0, "mixed", &reset_type,
@@ -261,8 +246,6 @@ int cmd_reset(int argc, const char **argv, const char *prefix)
argc = parse_options(argc, argv, prefix, options, git_reset_usage,
PARSE_OPT_KEEP_DASHDASH);
- reflog_action = args_to_str(argv);
- setenv("GIT_REFLOG_ACTION", reflog_action, 0);
/*
* Possible arguments are:
@@ -357,13 +340,13 @@ int cmd_reset(int argc, const char **argv, const char *prefix)
old_orig = sha1_old_orig;
if (!get_sha1("HEAD", sha1_orig)) {
orig = sha1_orig;
- prepend_reflog_action("updating ORIG_HEAD", msg, sizeof(msg));
- update_ref(msg, "ORIG_HEAD", orig, old_orig, 0, MSG_ON_ERR);
+ set_reflog_message(&msg, "updating ORIG_HEAD", NULL);
+ update_ref(msg.buf, "ORIG_HEAD", orig, old_orig, 0, MSG_ON_ERR);
}
else if (old_orig)
delete_ref("ORIG_HEAD", old_orig, 0);
- prepend_reflog_action("updating HEAD", msg, sizeof(msg));
- update_ref_status = update_ref(msg, "HEAD", sha1, orig, 0, MSG_ON_ERR);
+ set_reflog_message(&msg, "updating HEAD", rev);
+ update_ref_status = update_ref(msg.buf, "HEAD", sha1, orig, 0, MSG_ON_ERR);
switch (reset_type) {
case HARD:
@@ -380,7 +363,7 @@ int cmd_reset(int argc, const char **argv, const char *prefix)
remove_branch_state();
- free(reflog_action);
+ strbuf_release(&msg);
return update_ref_status;
}