From 1b32decefd840e0ca5d18eefd6472fd8624dd849 Mon Sep 17 00:00:00 2001 From: =?UTF-8?q?Nguy=E1=BB=85n=20Th=C3=A1i=20Ng=E1=BB=8Dc=20Duy?= Date: Tue, 25 Mar 2014 20:23:27 +0700 Subject: log: add --show-linear-break to help see non-linear history MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit Option explanation is in rev-list-options.txt. The interaction with -z is left undecided. Signed-off-by: Nguyễn Thái Ngọc Duy Signed-off-by: Junio C Hamano diff --git a/Documentation/rev-list-options.txt b/Documentation/rev-list-options.txt index 03533af..1261ac0 100644 --- a/Documentation/rev-list-options.txt +++ b/Documentation/rev-list-options.txt @@ -750,6 +750,13 @@ This enables parent rewriting, see 'History Simplification' below. This implies the `--topo-order` option by default, but the `--date-order` option may also be specified. +--show-linear-break[=]:: + When --graph is not used, all history branches are flattened + which can make it hard to see that the two consecutive commits + do not belong to a linear branch. This option puts a barrier + in between them in that case. If `` is specified, it + is the string that will be shown instead of the default one. + ifdef::git-rev-list[] --count:: Print a number stating how many commits would have been diff --git a/log-tree.c b/log-tree.c index 08970bf..17862f6 100644 --- a/log-tree.c +++ b/log-tree.c @@ -805,12 +805,16 @@ int log_tree_commit(struct rev_info *opt, struct commit *commit) if (opt->line_level_traverse) return line_log_print(opt, commit); + if (opt->track_linear && !opt->linear && !opt->reverse_output_stage) + printf("\n%s\n", opt->break_bar); shown = log_tree_diff(opt, commit, &log); if (!shown && opt->loginfo && opt->always_show_header) { log.parent = NULL; show_log(opt); shown = 1; } + if (opt->track_linear && !opt->linear && opt->reverse_output_stage) + printf("\n%s\n", opt->break_bar); opt->loginfo = NULL; maybe_flush_or_die(stdout, "stdout"); return shown; diff --git a/object.h b/object.h index 5e30066..ce01142 100644 --- a/object.h +++ b/object.h @@ -28,7 +28,7 @@ struct object_array { #define TYPE_BITS 3 /* * object flag allocation: - * revision.h: 0---------10 + * revision.h: 0---------10 26 * fetch-pack.c: 0---4 * walker.c: 0-2 * upload-pack.c: 11----------------19 diff --git a/revision.c b/revision.c index a68fde6..05b76c7 100644 --- a/revision.c +++ b/revision.c @@ -1832,6 +1832,14 @@ static int handle_revision_opt(struct rev_info *revs, int argc, const char **arg revs->notes_opt.use_default_notes = 1; } else if (!strcmp(arg, "--show-signature")) { revs->show_signature = 1; + } else if (!strcmp(arg, "--show-linear-break") || + starts_with(arg, "--show-linear-break=")) { + if (starts_with(arg, "--show-linear-break=")) + revs->break_bar = xstrdup(arg + 20); + else + revs->break_bar = " .........."; + revs->track_linear = 1; + revs->track_first_time = 1; } else if (starts_with(arg, "--show-notes=") || starts_with(arg, "--notes=")) { struct strbuf buf = STRBUF_INIT; @@ -1955,6 +1963,8 @@ static int handle_revision_opt(struct rev_info *revs, int argc, const char **arg unkv[(*unkc)++] = arg; return opts; } + if (revs->graph && revs->track_linear) + die("--show-linear-break and --graph are incompatible"); return 1; } @@ -2897,6 +2907,27 @@ enum commit_action simplify_commit(struct rev_info *revs, struct commit *commit) return action; } +static void track_linear(struct rev_info *revs, struct commit *commit) +{ + if (revs->track_first_time) { + revs->linear = 1; + revs->track_first_time = 0; + } else { + struct commit_list *p; + for (p = revs->previous_parents; p; p = p->next) + if (p->item == NULL || /* first commit */ + !hashcmp(p->item->object.sha1, commit->object.sha1)) + break; + revs->linear = p != NULL; + } + if (revs->reverse) { + if (revs->linear) + commit->object.flags |= TRACK_LINEAR; + } + free_commit_list(revs->previous_parents); + revs->previous_parents = copy_commit_list(commit->parents); +} + static struct commit *get_revision_1(struct rev_info *revs) { if (!revs->commits) @@ -2936,6 +2967,8 @@ static struct commit *get_revision_1(struct rev_info *revs) die("Failed to simplify parents of commit %s", sha1_to_hex(commit->object.sha1)); default: + if (revs->track_linear) + track_linear(revs, commit); return commit; } } while (revs->commits); @@ -3102,14 +3135,23 @@ struct commit *get_revision(struct rev_info *revs) revs->reverse_output_stage = 1; } - if (revs->reverse_output_stage) - return pop_commit(&revs->commits); + if (revs->reverse_output_stage) { + c = pop_commit(&revs->commits); + if (revs->track_linear) + revs->linear = !!(c && c->object.flags & TRACK_LINEAR); + return c; + } c = get_revision_internal(revs); if (c && revs->graph) graph_update(revs->graph, c); - if (!c) + if (!c) { free_saved_parents(revs); + if (revs->previous_parents) { + free_commit_list(revs->previous_parents); + revs->previous_parents = NULL; + } + } return c; } diff --git a/revision.h b/revision.h index 531fb0d..b8f4bc9 100644 --- a/revision.h +++ b/revision.h @@ -19,7 +19,8 @@ #define SYMMETRIC_LEFT (1u<<8) #define PATCHSAME (1u<<9) #define BOTTOM (1u<<10) -#define ALL_REV_FLAGS ((1u<<11)-1) +#define TRACK_LINEAR (1u<<26) +#define ALL_REV_FLAGS (((1u<<11)-1) | TRACK_LINEAR) #define DECORATE_SHORT_REFS 1 #define DECORATE_FULL_REFS 2 @@ -138,6 +139,10 @@ struct rev_info { preserve_subject:1; unsigned int disable_stdin:1; unsigned int leak_pending:1; + /* --show-linear-break */ + unsigned int track_linear:1, + track_first_time:1, + linear:1; enum date_mode date_mode; @@ -196,6 +201,9 @@ struct rev_info { /* copies of the parent lists, for --full-diff display */ struct saved_parents *saved_parents_slab; + + struct commit_list *previous_parents; + const char *break_bar; }; extern int ref_excluded(struct string_list *, const char *path); -- cgit v0.10.2-6-g49f6