| #include "cache.h" |
| #include "commit.h" |
| #include "refs.h" |
| #include "diff.h" |
| #include "revision.h" |
| #include "string-list.h" |
| #include "reflog-walk.h" |
| |
| struct complete_reflogs { |
| char *ref; |
| char *short_ref; |
| struct reflog_info { |
| struct object_id ooid, noid; |
| char *email; |
| timestamp_t timestamp; |
| int tz; |
| char *message; |
| } *items; |
| int nr, alloc; |
| }; |
| |
| static int read_one_reflog(struct object_id *ooid, struct object_id *noid, |
| const char *email, timestamp_t timestamp, int tz, |
| const char *message, void *cb_data) |
| { |
| struct complete_reflogs *array = cb_data; |
| struct reflog_info *item; |
| |
| ALLOC_GROW(array->items, array->nr + 1, array->alloc); |
| item = array->items + array->nr; |
| oidcpy(&item->ooid, ooid); |
| oidcpy(&item->noid, noid); |
| item->email = xstrdup(email); |
| item->timestamp = timestamp; |
| item->tz = tz; |
| item->message = xstrdup(message); |
| array->nr++; |
| return 0; |
| } |
| |
| static void free_complete_reflog(struct complete_reflogs *array) |
| { |
| int i; |
| |
| if (!array) |
| return; |
| |
| for (i = 0; i < array->nr; i++) { |
| free(array->items[i].email); |
| free(array->items[i].message); |
| } |
| free(array->items); |
| free(array->ref); |
| free(array->short_ref); |
| free(array); |
| } |
| |
| static void complete_reflogs_clear(void *util, const char *str UNUSED) |
| { |
| struct complete_reflogs *array = util; |
| free_complete_reflog(array); |
| } |
| |
| static struct complete_reflogs *read_complete_reflog(const char *ref) |
| { |
| struct complete_reflogs *reflogs = |
| xcalloc(1, sizeof(struct complete_reflogs)); |
| reflogs->ref = xstrdup(ref); |
| for_each_reflog_ent(ref, read_one_reflog, reflogs); |
| if (reflogs->nr == 0) { |
| const char *name; |
| void *name_to_free; |
| name = name_to_free = resolve_refdup(ref, RESOLVE_REF_READING, |
| NULL, NULL); |
| if (name) { |
| for_each_reflog_ent(name, read_one_reflog, reflogs); |
| free(name_to_free); |
| } |
| } |
| if (reflogs->nr == 0) { |
| char *refname = xstrfmt("refs/%s", ref); |
| for_each_reflog_ent(refname, read_one_reflog, reflogs); |
| if (reflogs->nr == 0) { |
| free(refname); |
| refname = xstrfmt("refs/heads/%s", ref); |
| for_each_reflog_ent(refname, read_one_reflog, reflogs); |
| } |
| free(refname); |
| } |
| return reflogs; |
| } |
| |
| static int get_reflog_recno_by_time(struct complete_reflogs *array, |
| timestamp_t timestamp) |
| { |
| int i; |
| for (i = array->nr - 1; i >= 0; i--) |
| if (timestamp >= array->items[i].timestamp) |
| return i; |
| return -1; |
| } |
| |
| struct commit_reflog { |
| int recno; |
| enum selector_type { |
| SELECTOR_NONE, |
| SELECTOR_INDEX, |
| SELECTOR_DATE |
| } selector; |
| struct complete_reflogs *reflogs; |
| }; |
| |
| struct reflog_walk_info { |
| struct commit_reflog **logs; |
| size_t nr, alloc; |
| struct string_list complete_reflogs; |
| struct commit_reflog *last_commit_reflog; |
| }; |
| |
| void init_reflog_walk(struct reflog_walk_info **info) |
| { |
| CALLOC_ARRAY(*info, 1); |
| (*info)->complete_reflogs.strdup_strings = 1; |
| } |
| |
| void reflog_walk_info_release(struct reflog_walk_info *info) |
| { |
| size_t i; |
| |
| if (!info) |
| return; |
| |
| for (i = 0; i < info->nr; i++) |
| free(info->logs[i]); |
| string_list_clear_func(&info->complete_reflogs, |
| complete_reflogs_clear); |
| free(info->logs); |
| free(info); |
| } |
| |
| int add_reflog_for_walk(struct reflog_walk_info *info, |
| struct commit *commit, const char *name) |
| { |
| timestamp_t timestamp = 0; |
| int recno = -1; |
| struct string_list_item *item; |
| struct complete_reflogs *reflogs; |
| char *branch, *at = strchr(name, '@'); |
| struct commit_reflog *commit_reflog; |
| enum selector_type selector = SELECTOR_NONE; |
| |
| if (commit->object.flags & UNINTERESTING) |
| die("cannot walk reflogs for %s", name); |
| |
| branch = xstrdup(name); |
| if (at && at[1] == '{') { |
| char *ep; |
| branch[at - name] = '\0'; |
| recno = strtoul(at + 2, &ep, 10); |
| if (*ep != '}') { |
| recno = -1; |
| timestamp = approxidate(at + 2); |
| selector = SELECTOR_DATE; |
| } |
| else |
| selector = SELECTOR_INDEX; |
| } else |
| recno = 0; |
| |
| item = string_list_lookup(&info->complete_reflogs, branch); |
| if (item) |
| reflogs = item->util; |
| else { |
| if (*branch == '\0') { |
| free(branch); |
| branch = resolve_refdup("HEAD", 0, NULL, NULL); |
| if (!branch) |
| die("no current branch"); |
| |
| } |
| reflogs = read_complete_reflog(branch); |
| if (!reflogs || reflogs->nr == 0) { |
| char *b; |
| int ret = dwim_log(branch, strlen(branch), |
| NULL, &b); |
| if (ret > 1) |
| free(b); |
| else if (ret == 1) { |
| free_complete_reflog(reflogs); |
| free(branch); |
| branch = b; |
| reflogs = read_complete_reflog(branch); |
| } |
| } |
| if (!reflogs || reflogs->nr == 0) { |
| free_complete_reflog(reflogs); |
| free(branch); |
| return -1; |
| } |
| string_list_insert(&info->complete_reflogs, branch)->util |
| = reflogs; |
| } |
| free(branch); |
| |
| CALLOC_ARRAY(commit_reflog, 1); |
| if (recno < 0) { |
| commit_reflog->recno = get_reflog_recno_by_time(reflogs, timestamp); |
| if (commit_reflog->recno < 0) { |
| free(commit_reflog); |
| return -1; |
| } |
| } else |
| commit_reflog->recno = reflogs->nr - recno - 1; |
| commit_reflog->selector = selector; |
| commit_reflog->reflogs = reflogs; |
| |
| ALLOC_GROW(info->logs, info->nr + 1, info->alloc); |
| info->logs[info->nr++] = commit_reflog; |
| |
| return 0; |
| } |
| |
| void get_reflog_selector(struct strbuf *sb, |
| struct reflog_walk_info *reflog_info, |
| const struct date_mode *dmode, int force_date, |
| int shorten) |
| { |
| struct commit_reflog *commit_reflog = reflog_info->last_commit_reflog; |
| struct reflog_info *info; |
| const char *printed_ref; |
| |
| if (!commit_reflog) |
| return; |
| |
| if (shorten) { |
| if (!commit_reflog->reflogs->short_ref) |
| commit_reflog->reflogs->short_ref |
| = shorten_unambiguous_ref(commit_reflog->reflogs->ref, 0); |
| printed_ref = commit_reflog->reflogs->short_ref; |
| } else { |
| printed_ref = commit_reflog->reflogs->ref; |
| } |
| |
| strbuf_addf(sb, "%s@{", printed_ref); |
| if (commit_reflog->selector == SELECTOR_DATE || |
| (commit_reflog->selector == SELECTOR_NONE && force_date)) { |
| info = &commit_reflog->reflogs->items[commit_reflog->recno+1]; |
| strbuf_addstr(sb, show_date(info->timestamp, info->tz, dmode)); |
| } else { |
| strbuf_addf(sb, "%d", commit_reflog->reflogs->nr |
| - 2 - commit_reflog->recno); |
| } |
| |
| strbuf_addch(sb, '}'); |
| } |
| |
| void get_reflog_message(struct strbuf *sb, |
| struct reflog_walk_info *reflog_info) |
| { |
| struct commit_reflog *commit_reflog = reflog_info->last_commit_reflog; |
| struct reflog_info *info; |
| size_t len; |
| |
| if (!commit_reflog) |
| return; |
| |
| info = &commit_reflog->reflogs->items[commit_reflog->recno+1]; |
| len = strlen(info->message); |
| if (len > 0) |
| len--; /* strip away trailing newline */ |
| strbuf_add(sb, info->message, len); |
| } |
| |
| const char *get_reflog_ident(struct reflog_walk_info *reflog_info) |
| { |
| struct commit_reflog *commit_reflog = reflog_info->last_commit_reflog; |
| struct reflog_info *info; |
| |
| if (!commit_reflog) |
| return NULL; |
| |
| info = &commit_reflog->reflogs->items[commit_reflog->recno+1]; |
| 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) |
| { |
| if (reflog_info && reflog_info->last_commit_reflog) { |
| struct commit_reflog *commit_reflog = reflog_info->last_commit_reflog; |
| struct reflog_info *info; |
| struct strbuf selector = STRBUF_INIT; |
| |
| info = &commit_reflog->reflogs->items[commit_reflog->recno+1]; |
| get_reflog_selector(&selector, reflog_info, dmode, force_date, 0); |
| if (oneline) { |
| printf("%s: %s", selector.buf, info->message); |
| } |
| else { |
| printf("Reflog: %s (%s)\nReflog message: %s", |
| selector.buf, info->email, info->message); |
| } |
| |
| 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(the_repository, |
| &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; |
| } |