diff options
| -rw-r--r-- | builtin/log.c | 9 | ||||
| -rw-r--r-- | builtin/rev-list.c | 3 | ||||
| -rw-r--r-- | reflog-walk.c | 151 | ||||
| -rw-r--r-- | reflog-walk.h | 7 | ||||
| -rw-r--r-- | revision.c | 57 | ||||
| -rwxr-xr-x | t/t1411-reflog-show.sh | 10 | ||||
| -rwxr-xr-x | t/t1414-reflog-walk.sh | 135 | ||||
| -rwxr-xr-x | t/t3200-branch.sh | 3 |
8 files changed, 253 insertions, 122 deletions
diff --git a/builtin/log.c b/builtin/log.c index cb7e0e61d7..725c7b8a1a 100644 --- a/builtin/log.c +++ b/builtin/log.c @@ -372,11 +372,14 @@ static int cmd_log_walk(struct rev_info *rev) */ 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) diff --git a/builtin/rev-list.c b/builtin/rev-list.c index fee10d8567..e8f5048903 100644 --- a/builtin/rev-list.c +++ b/builtin/rev-list.c @@ -11,6 +11,7 @@ #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" @@ -349,7 +350,7 @@ int cmd_rev_list(int argc, const char **argv, const char *prefix) /* 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) diff --git a/reflog-walk.c b/reflog-walk.c index 81bca2ed23..74ebe5148f 100644 --- a/reflog-walk.c +++ b/reflog-walk.c @@ -94,44 +94,6 @@ static int get_reflog_recno_by_time(struct complete_reflogs *array, 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) - MOVE_ARRAY(lifo->items + i, - lifo->items + i + 1, - lifo->nr - i); - 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 { @@ -143,7 +105,8 @@ struct commit_reflog { }; 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; }; @@ -232,52 +195,10 @@ int add_reflog_for_walk(struct reflog_walk_info *info, 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, @@ -343,6 +264,18 @@ const char *get_reflog_ident(struct reflog_walk_info *reflog_info) 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) { @@ -364,3 +297,53 @@ void show_reflog_message(struct reflog_walk_info *reflog_info, int oneline, 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; +} diff --git a/reflog-walk.h b/reflog-walk.h index 27886f793e..7553c448fe 100644 --- a/reflog-walk.h +++ b/reflog-walk.h @@ -8,16 +8,19 @@ struct reflog_walk_info; 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 diff --git a/revision.c b/revision.c index bfbf0514c2..ab4af0c352 100644 --- a/revision.c +++ b/revision.c @@ -148,16 +148,14 @@ static void add_pending_object_with_path(struct rev_info *revs, 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); } @@ -2364,6 +2362,8 @@ int setup_revisions(int argc, const char **argv, struct rev_info *revs, struct s 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"); @@ -2963,6 +2963,18 @@ static inline int want_ancestry(const struct rev_info *revs) 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) @@ -2973,8 +2985,9 @@ enum commit_action get_commit_action(struct rev_info *revs, struct commit *commi 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) || @@ -3107,17 +3120,19 @@ static void track_linear(struct rev_info *revs, struct commit *commit) 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 @@ -3126,9 +3141,12 @@ static struct commit *get_revision_1(struct rev_info *revs) */ 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)); @@ -3146,8 +3164,7 @@ static struct commit *get_revision_1(struct rev_info *revs) track_linear(revs, commit); return commit; } - } while (revs->commits); - return NULL; + } } /* diff --git a/t/t1411-reflog-show.sh b/t/t1411-reflog-show.sh index b9cb76654b..6ac7734d79 100755 --- a/t/t1411-reflog-show.sh +++ b/t/t1411-reflog-show.sh @@ -171,14 +171,4 @@ test_expect_success 'reflog exists works' ' ! 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 diff --git a/t/t1414-reflog-walk.sh b/t/t1414-reflog-walk.sh new file mode 100755 index 0000000000..feb1efd8ff --- /dev/null +++ b/t/t1414-reflog-walk.sh @@ -0,0 +1,135 @@ +#!/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 $one >expect && + git log -g --format=%H -1 >actual && + test_cmp expect actual +' + +test_expect_success 'rev-list -g complains when there are no reflogs' ' + test_must_fail git rev-list -g +' + +test_done diff --git a/t/t3200-branch.sh b/t/t3200-branch.sh index dd37ac47c5..9d707d2a40 100755 --- a/t/t3200-branch.sh +++ b/t/t3200-branch.sh @@ -166,10 +166,9 @@ test_expect_success 'resulting reflog can be shown by log -g' ' oid=$(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 ' |