*/
rev->max_count++;
if (!rev->reflog_info) {
- /* we allow cycles in reflog ancestry */
+ /*
+ * We may show a given commit multiple times when
+ * walking the reflogs.
+ */
free_commit_buffer(commit);
+ free_commit_list(commit->parents);
+ commit->parents = NULL;
}
- free_commit_list(commit->parents);
- commit->parents = NULL;
if (saved_nrl < rev->diffopt.needed_rename_limit)
saved_nrl = rev->diffopt.needed_rename_limit;
if (rev->diffopt.degraded_cc_to_c)
#include "graph.h"
#include "bisect.h"
#include "progress.h"
+#include "reflog-walk.h"
static const char rev_list_usage[] =
"git rev-list [OPTION] <commit-id>... [ -- paths... ]\n"
/* Only --header was specified */
revs.commit_format = CMIT_FMT_RAW;
- if ((!revs.commits &&
+ if ((!revs.commits && reflog_walk_empty(revs.reflog_info) &&
(!(revs.tag_objects || revs.tree_objects || revs.blob_objects) &&
!revs.pending.nr)) ||
revs.diff)
return -1;
}
-struct commit_info_lifo {
- struct commit_info {
- struct commit *commit;
- void *util;
- } *items;
- int nr, alloc;
-};
-
-static struct commit_info *get_commit_info(struct commit *commit,
- struct commit_info_lifo *lifo, int pop)
-{
- int i;
- for (i = 0; i < lifo->nr; i++)
- if (lifo->items[i].commit == commit) {
- struct commit_info *result = &lifo->items[i];
- if (pop) {
- if (i + 1 < lifo->nr)
- memmove(lifo->items + i,
- lifo->items + i + 1,
- (lifo->nr - i) *
- sizeof(struct commit_info));
- lifo->nr--;
- }
- return result;
- }
- return NULL;
-}
-
-static void add_commit_info(struct commit *commit, void *util,
- struct commit_info_lifo *lifo)
-{
- struct commit_info *info;
- ALLOC_GROW(lifo->items, lifo->nr + 1, lifo->alloc);
- info = lifo->items + lifo->nr;
- info->commit = commit;
- info->util = util;
- lifo->nr++;
-}
-
struct commit_reflog {
int recno;
enum selector_type {
};
struct reflog_walk_info {
- struct commit_info_lifo reflogs;
+ struct commit_reflog **logs;
+ size_t nr, alloc;
struct string_list complete_reflogs;
struct commit_reflog *last_commit_reflog;
};
commit_reflog->selector = selector;
commit_reflog->reflogs = reflogs;
- add_commit_info(commit, commit_reflog, &info->reflogs);
- return 0;
-}
+ ALLOC_GROW(info->logs, info->nr + 1, info->alloc);
+ info->logs[info->nr++] = commit_reflog;
-void fake_reflog_parent(struct reflog_walk_info *info, struct commit *commit)
-{
- struct commit_info *commit_info =
- get_commit_info(commit, &info->reflogs, 0);
- struct commit_reflog *commit_reflog;
- struct object *logobj;
- struct reflog_info *reflog;
-
- info->last_commit_reflog = NULL;
- if (!commit_info)
- return;
-
- commit_reflog = commit_info->util;
- if (commit_reflog->recno < 0) {
- commit->parents = NULL;
- return;
- }
- info->last_commit_reflog = commit_reflog;
-
- do {
- reflog = &commit_reflog->reflogs->items[commit_reflog->recno];
- commit_reflog->recno--;
- logobj = parse_object(&reflog->ooid);
- } while (commit_reflog->recno && (logobj && logobj->type != OBJ_COMMIT));
-
- if (!logobj && commit_reflog->recno >= 0 && is_null_oid(&reflog->ooid)) {
- /* a root commit, but there are still more entries to show */
- reflog = &commit_reflog->reflogs->items[commit_reflog->recno];
- logobj = parse_object(&reflog->noid);
- if (!logobj)
- logobj = parse_object(&reflog->ooid);
- }
-
- if (!logobj || logobj->type != OBJ_COMMIT) {
- commit_info->commit = NULL;
- commit->parents = NULL;
- return;
- }
- commit_info->commit = (struct commit *)logobj;
-
- commit->parents = xcalloc(1, sizeof(struct commit_list));
- commit->parents->item = commit_info->commit;
+ return 0;
}
void get_reflog_selector(struct strbuf *sb,
return info->email;
}
+timestamp_t get_reflog_timestamp(struct reflog_walk_info *reflog_info)
+{
+ struct commit_reflog *commit_reflog = reflog_info->last_commit_reflog;
+ struct reflog_info *info;
+
+ if (!commit_reflog)
+ return 0;
+
+ info = &commit_reflog->reflogs->items[commit_reflog->recno+1];
+ return info->timestamp;
+}
+
void show_reflog_message(struct reflog_walk_info *reflog_info, int oneline,
const struct date_mode *dmode, int force_date)
{
strbuf_release(&selector);
}
}
+
+int reflog_walk_empty(struct reflog_walk_info *info)
+{
+ return !info || !info->nr;
+}
+
+static struct commit *next_reflog_commit(struct commit_reflog *log)
+{
+ for (; log->recno >= 0; log->recno--) {
+ struct reflog_info *entry = &log->reflogs->items[log->recno];
+ struct object *obj = parse_object(&entry->noid);
+
+ if (obj && obj->type == OBJ_COMMIT)
+ return (struct commit *)obj;
+ }
+ return NULL;
+}
+
+static timestamp_t log_timestamp(struct commit_reflog *log)
+{
+ return log->reflogs->items[log->recno].timestamp;
+}
+
+struct commit *next_reflog_entry(struct reflog_walk_info *walk)
+{
+ struct commit_reflog *best = NULL;
+ struct commit *best_commit = NULL;
+ size_t i;
+
+ for (i = 0; i < walk->nr; i++) {
+ struct commit_reflog *log = walk->logs[i];
+ struct commit *commit = next_reflog_commit(log);
+
+ if (!commit)
+ continue;
+
+ if (!best || log_timestamp(log) > log_timestamp(best)) {
+ best = log;
+ best_commit = commit;
+ }
+ }
+
+ if (best) {
+ best->recno--;
+ walk->last_commit_reflog = best;
+ return best_commit;
+ }
+
+ return NULL;
+}
extern void init_reflog_walk(struct reflog_walk_info **info);
extern int add_reflog_for_walk(struct reflog_walk_info *info,
struct commit *commit, const char *name);
-extern void fake_reflog_parent(struct reflog_walk_info *info,
- struct commit *commit);
extern void show_reflog_message(struct reflog_walk_info *info, int,
const struct date_mode *, int force_date);
extern void get_reflog_message(struct strbuf *sb,
struct reflog_walk_info *reflog_info);
extern const char *get_reflog_ident(struct reflog_walk_info *reflog_info);
+extern timestamp_t get_reflog_timestamp(struct reflog_walk_info *reflog_info);
extern void get_reflog_selector(struct strbuf *sb,
struct reflog_walk_info *reflog_info,
const struct date_mode *dmode, int force_date,
int shorten);
+extern int reflog_walk_empty(struct reflog_walk_info *walk);
+
+struct commit *next_reflog_entry(struct reflog_walk_info *reflog_info);
+
#endif
if (revs->reflog_info && obj->type == OBJ_COMMIT) {
struct strbuf buf = STRBUF_INIT;
int len = interpret_branch_name(name, 0, &buf, 0);
- int st;
if (0 < len && name[len] && buf.len)
strbuf_addstr(&buf, name + len);
- st = add_reflog_for_walk(revs->reflog_info,
- (struct commit *)obj,
- buf.buf[0] ? buf.buf: name);
+ add_reflog_for_walk(revs->reflog_info,
+ (struct commit *)obj,
+ buf.buf[0] ? buf.buf: name);
strbuf_release(&buf);
- if (st)
- return;
+ return; /* do not add the commit itself */
}
add_object_array_with_path(obj, name, &revs->pending, mode, path);
}
if (revs->reverse && revs->reflog_info)
die("cannot combine --reverse with --walk-reflogs");
+ if (revs->reflog_info && revs->limited)
+ die("cannot combine --walk-reflogs with history-limiting options");
if (revs->rewrite_parents && revs->children.name)
die("cannot combine --parents and --children");
return (revs->rewrite_parents || revs->children.name);
}
+/*
+ * Return a timestamp to be used for --since/--until comparisons for this
+ * commit, based on the revision options.
+ */
+static timestamp_t comparison_date(const struct rev_info *revs,
+ struct commit *commit)
+{
+ return revs->reflog_info ?
+ get_reflog_timestamp(revs->reflog_info) :
+ commit->date;
+}
+
enum commit_action get_commit_action(struct rev_info *revs, struct commit *commit)
{
if (commit->object.flags & SHOWN)
return commit_show;
if (commit->object.flags & UNINTERESTING)
return commit_ignore;
- if (revs->min_age != -1 && (commit->date > revs->min_age))
- return commit_ignore;
+ if (revs->min_age != -1 &&
+ comparison_date(revs, commit) > revs->min_age)
+ return commit_ignore;
if (revs->min_parents || (revs->max_parents >= 0)) {
int n = commit_list_count(commit->parents);
if ((n < revs->min_parents) ||
static struct commit *get_revision_1(struct rev_info *revs)
{
- if (!revs->commits)
- return NULL;
+ while (1) {
+ struct commit *commit;
- do {
- struct commit *commit = pop_commit(&revs->commits);
+ if (revs->reflog_info)
+ commit = next_reflog_entry(revs->reflog_info);
+ else
+ commit = pop_commit(&revs->commits);
- if (revs->reflog_info) {
- save_parents(revs, commit);
- fake_reflog_parent(revs->reflog_info, commit);
+ if (!commit)
+ return NULL;
+
+ if (revs->reflog_info)
commit->object.flags &= ~(ADDED | SEEN | SHOWN);
- }
/*
* If we haven't done the list limiting, we need to look at
*/
if (!revs->limited) {
if (revs->max_age != -1 &&
- (commit->date < revs->max_age))
+ comparison_date(revs, commit) < revs->max_age)
continue;
- if (add_parents_to_list(revs, commit, &revs->commits, NULL) < 0) {
+
+ if (revs->reflog_info)
+ try_to_simplify_commit(revs, commit);
+ else if (add_parents_to_list(revs, commit, &revs->commits, NULL) < 0) {
if (!revs->ignore_missing_links)
die("Failed to traverse parents of commit %s",
oid_to_hex(&commit->object.oid));
track_linear(revs, commit);
return commit;
}
- } while (revs->commits);
- return NULL;
+ }
}
/*
! git reflog exists refs/heads/nonexistent
'
-# The behavior with two reflogs is buggy and the output is in flux; for now
-# we're just checking that the program works at all without segfaulting.
-test_expect_success 'showing multiple reflogs works' '
- git log -g HEAD HEAD >actual
-'
-
-test_expect_success 'showing multiple reflogs with an old date' '
- git log -g HEAD@{1979-01-01} HEAD >actual
-'
-
test_done
--- /dev/null
+#!/bin/sh
+
+test_description='various tests of reflog walk (log -g) behavior'
+. ./test-lib.sh
+
+test_expect_success 'set up some reflog entries' '
+ test_commit one &&
+ test_commit two &&
+ git checkout -b side HEAD^ &&
+ test_commit three &&
+ git merge --no-commit master &&
+ echo evil-merge-content >>one.t &&
+ test_tick &&
+ git commit --no-edit -a
+'
+
+do_walk () {
+ git log -g --format="%gd %gs" "$@"
+}
+
+sq="'"
+test_expect_success 'set up expected reflog' '
+ cat >expect.all <<-EOF
+ HEAD@{0} commit (merge): Merge branch ${sq}master${sq} into side
+ HEAD@{1} commit: three
+ HEAD@{2} checkout: moving from master to side
+ HEAD@{3} commit: two
+ HEAD@{4} commit (initial): one
+ EOF
+'
+
+test_expect_success 'reflog walk shows expected logs' '
+ do_walk >actual &&
+ test_cmp expect.all actual
+'
+
+test_expect_success 'reflog can limit with --no-merges' '
+ grep -v merge expect.all >expect &&
+ do_walk --no-merges >actual &&
+ test_cmp expect actual
+'
+
+test_expect_success 'reflog can limit with pathspecs' '
+ grep two expect.all >expect &&
+ do_walk -- two.t >actual &&
+ test_cmp expect actual
+'
+
+test_expect_success 'pathspec limiting handles merges' '
+ # we pick up:
+ # - the initial commit of one
+ # - the checkout back to commit one
+ # - the evil merge which touched one
+ sed -n "1p;3p;5p" expect.all >expect &&
+ do_walk -- one.t >actual &&
+ test_cmp expect actual
+'
+
+test_expect_success '--parents shows true parents' '
+ # convert newlines to spaces
+ echo $(git rev-parse HEAD HEAD^1 HEAD^2) >expect &&
+ git rev-list -g --parents -1 HEAD >actual &&
+ test_cmp expect actual
+'
+
+test_expect_success 'walking multiple reflogs shows all' '
+ # We expect to see all entries for all reflogs, but interleaved by
+ # date, with order on the command line breaking ties. We
+ # can use "sort" on the separate lists to generate this,
+ # but note two tricks:
+ #
+ # 1. We use "{" as the delimiter, which lets us skip to the reflog
+ # date specifier as our second field, and then our "-n" numeric
+ # sort ignores the bits after the timestamp.
+ #
+ # 2. POSIX leaves undefined whether this is a stable sort or not. So
+ # we use "-k 1" to ensure that we see HEAD before master before
+ # side when breaking ties.
+ {
+ do_walk --date=unix HEAD &&
+ do_walk --date=unix side &&
+ do_walk --date=unix master
+ } >expect.raw &&
+ sort -t "{" -k 2nr -k 1 <expect.raw >expect &&
+ do_walk --date=unix HEAD master side >actual &&
+ test_cmp expect actual
+'
+
+test_expect_success 'date-limiting does not interfere with other logs' '
+ do_walk HEAD@{1979-01-01} HEAD >actual &&
+ test_cmp expect.all actual
+'
+
+test_expect_success 'min/max age uses entry date to limit' '
+ # Flip between commits one and two so each ref update actually
+ # does something (and does not get optimized out). We know
+ # that the timestamps of those commits will be before our "min".
+
+ git update-ref -m before refs/heads/minmax one &&
+
+ test_tick &&
+ min=$test_tick &&
+ git update-ref -m min refs/heads/minmax two &&
+
+ test_tick &&
+ max=$test_tick &&
+ git update-ref -m max refs/heads/minmax one &&
+
+ test_tick &&
+ git update-ref -m after refs/heads/minmax two &&
+
+ cat >expect <<-\EOF &&
+ max
+ min
+ EOF
+ git log -g --since=$min --until=$max --format=%gs minmax >actual &&
+ test_cmp expect actual
+'
+
+test_expect_success 'walk prefers reflog to ref tip' '
+ head=$(git rev-parse HEAD) &&
+ one=$(git rev-parse one) &&
+ ident="$GIT_COMMITTER_NAME <$GIT_COMMITTER_EMAIL> $GIT_COMMITTER_DATE" &&
+ echo "$head $one $ident broken reflog entry" >>.git/logs/HEAD &&
+
+ echo $one >expect &&
+ git log -g --format=%H -1 >actual &&
+ test_cmp expect actual
+'
+
+test_expect_success 'rev-list -g complains when there are no reflogs' '
+ test_must_fail git rev-list -g
+'
+
+test_done
oid=$(git rev-parse HEAD) &&
cat >expect <<-EOF &&
HEAD@{0} $oid $msg
- HEAD@{1} $oid $msg
HEAD@{2} $oid checkout: moving from foo to baz
EOF
- git log -g --format="%gd %H %gs" -3 HEAD >actual &&
+ git log -g --format="%gd %H %gs" -2 HEAD >actual &&
test_cmp expect actual
'
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