in builtin/blame.c [889:1262]
int cmd_blame(int argc,
const char **argv,
const char *prefix,
struct repository *repo UNUSED)
{
struct rev_info revs;
char *path = NULL;
struct blame_scoreboard sb;
struct blame_origin *o;
struct blame_entry *ent = NULL;
long dashdash_pos, lno;
struct progress_info pi = { NULL, 0 };
struct string_list range_list = STRING_LIST_INIT_NODUP;
struct string_list ignore_rev_list = STRING_LIST_INIT_NODUP;
int output_option = 0, opt = 0;
int show_stats = 0;
const char *revs_file = NULL;
const char *contents_from = NULL;
const struct option options[] = {
OPT_BOOL(0, "incremental", &incremental, N_("show blame entries as we find them, incrementally")),
OPT_BOOL('b', NULL, &blank_boundary, N_("do not show object names of boundary commits (Default: off)")),
OPT_BOOL(0, "root", &show_root, N_("do not treat root commits as boundaries (Default: off)")),
OPT_BOOL(0, "show-stats", &show_stats, N_("show work cost statistics")),
OPT_BOOL(0, "progress", &show_progress, N_("force progress reporting")),
OPT_BIT(0, "score-debug", &output_option, N_("show output score for blame entries"), OUTPUT_SHOW_SCORE),
OPT_BIT('f', "show-name", &output_option, N_("show original filename (Default: auto)"), OUTPUT_SHOW_NAME),
OPT_BIT('n', "show-number", &output_option, N_("show original linenumber (Default: off)"), OUTPUT_SHOW_NUMBER),
OPT_BIT('p', "porcelain", &output_option, N_("show in a format designed for machine consumption"), OUTPUT_PORCELAIN),
OPT_BIT(0, "line-porcelain", &output_option, N_("show porcelain format with per-line commit information"), OUTPUT_PORCELAIN|OUTPUT_LINE_PORCELAIN),
OPT_BIT('c', NULL, &output_option, N_("use the same output mode as git-annotate (Default: off)"), OUTPUT_ANNOTATE_COMPAT),
OPT_BIT('t', NULL, &output_option, N_("show raw timestamp (Default: off)"), OUTPUT_RAW_TIMESTAMP),
OPT_BIT('l', NULL, &output_option, N_("show long commit SHA1 (Default: off)"), OUTPUT_LONG_OBJECT_NAME),
OPT_BIT('s', NULL, &output_option, N_("suppress author name and timestamp (Default: off)"), OUTPUT_NO_AUTHOR),
OPT_BIT('e', "show-email", &output_option, N_("show author email instead of name (Default: off)"), OUTPUT_SHOW_EMAIL),
OPT_BIT('w', NULL, &xdl_opts, N_("ignore whitespace differences"), XDF_IGNORE_WHITESPACE),
OPT_STRING_LIST(0, "ignore-rev", &ignore_rev_list, N_("rev"), N_("ignore <rev> when blaming")),
OPT_STRING_LIST(0, "ignore-revs-file", &ignore_revs_file_list, N_("file"), N_("ignore revisions from <file>")),
OPT_BIT(0, "color-lines", &output_option, N_("color redundant metadata from previous line differently"), OUTPUT_COLOR_LINE),
OPT_BIT(0, "color-by-age", &output_option, N_("color lines by age"), OUTPUT_SHOW_AGE_WITH_COLOR),
OPT_BIT(0, "minimal", &xdl_opts, N_("spend extra cycles to find better match"), XDF_NEED_MINIMAL),
OPT_STRING('S', NULL, &revs_file, N_("file"), N_("use revisions from <file> instead of calling git-rev-list")),
OPT_STRING(0, "contents", &contents_from, N_("file"), N_("use <file>'s contents as the final image")),
OPT_CALLBACK_F('C', NULL, &opt, N_("score"), N_("find line copies within and across files"), PARSE_OPT_OPTARG, blame_copy_callback),
OPT_CALLBACK_F('M', NULL, &opt, N_("score"), N_("find line movements within and across files"), PARSE_OPT_OPTARG, blame_move_callback),
OPT_STRING_LIST('L', NULL, &range_list, N_("range"),
N_("process only line range <start>,<end> or function :<funcname>")),
OPT__ABBREV(&abbrev),
OPT_END()
};
struct parse_opt_ctx_t ctx;
int cmd_is_annotate = !strcmp(argv[0], "annotate");
struct range_set ranges;
unsigned int range_i;
long anchor;
long num_lines = 0;
const char *str_usage = cmd_is_annotate ? annotate_usage : blame_usage;
const char *const *opt_usage = cmd_is_annotate ? annotate_opt_usage : blame_opt_usage;
setup_default_color_by_age();
git_config(git_blame_config, &output_option);
repo_init_revisions(the_repository, &revs, NULL);
revs.date_mode = blame_date_mode;
revs.diffopt.flags.allow_textconv = 1;
revs.diffopt.flags.follow_renames = 1;
save_commit_buffer = 0;
dashdash_pos = 0;
show_progress = -1;
parse_options_start(&ctx, argc, argv, prefix, options,
PARSE_OPT_KEEP_DASHDASH | PARSE_OPT_KEEP_ARGV0);
for (;;) {
switch (parse_options_step(&ctx, options, opt_usage)) {
case PARSE_OPT_NON_OPTION:
case PARSE_OPT_UNKNOWN:
break;
case PARSE_OPT_HELP:
case PARSE_OPT_ERROR:
case PARSE_OPT_SUBCOMMAND:
exit(129);
case PARSE_OPT_COMPLETE:
exit(0);
case PARSE_OPT_DONE:
if (ctx.argv[0])
dashdash_pos = ctx.cpidx;
goto parse_done;
}
if (!strcmp(ctx.argv[0], "--reverse")) {
ctx.argv[0] = "--children";
reverse = 1;
}
parse_revision_opt(&revs, &ctx, options, opt_usage);
}
parse_done:
revision_opts_finish(&revs);
no_whole_file_rename = !revs.diffopt.flags.follow_renames;
xdl_opts |= revs.diffopt.xdl_opts & XDF_INDENT_HEURISTIC;
revs.diffopt.flags.follow_renames = 0;
argc = parse_options_end(&ctx);
prepare_repo_settings(the_repository);
the_repository->settings.command_requires_full_index = 0;
if (incremental || (output_option & OUTPUT_PORCELAIN)) {
if (show_progress > 0)
die(_("--progress can't be used with --incremental or porcelain formats"));
show_progress = 0;
} else if (show_progress < 0)
show_progress = isatty(2);
if (0 < abbrev && abbrev < (int)the_hash_algo->hexsz)
/* one more abbrev length is needed for the boundary commit */
abbrev++;
else if (!abbrev)
abbrev = the_hash_algo->hexsz;
if (revs_file && read_ancestry(revs_file))
die_errno("reading graft file '%s' failed", revs_file);
if (cmd_is_annotate) {
output_option |= OUTPUT_ANNOTATE_COMPAT;
blame_date_mode.type = DATE_ISO8601;
} else {
blame_date_mode = revs.date_mode;
}
/* The maximum width used to show the dates */
switch (blame_date_mode.type) {
case DATE_RFC2822:
blame_date_width = sizeof("Thu, 19 Oct 2006 16:00:04 -0700");
break;
case DATE_ISO8601_STRICT:
blame_date_width = sizeof("2006-10-19T16:00:04-07:00");
break;
case DATE_ISO8601:
blame_date_width = sizeof("2006-10-19 16:00:04 -0700");
break;
case DATE_RAW:
blame_date_width = sizeof("1161298804 -0700");
break;
case DATE_UNIX:
blame_date_width = sizeof("1161298804");
break;
case DATE_SHORT:
blame_date_width = sizeof("2006-10-19");
break;
case DATE_RELATIVE:
/*
* TRANSLATORS: This string is used to tell us the
* maximum display width for a relative timestamp in
* "git blame" output. For C locale, "4 years, 11
* months ago", which takes 22 places, is the longest
* among various forms of relative timestamps, but
* your language may need more or fewer display
* columns.
*/
blame_date_width = utf8_strwidth(_("4 years, 11 months ago")) + 1; /* add the null */
break;
case DATE_HUMAN:
/* If the year is shown, no time is shown */
blame_date_width = sizeof("Thu Oct 19 16:00");
break;
case DATE_NORMAL:
blame_date_width = sizeof("Thu Oct 19 16:00:04 2006 -0700");
break;
case DATE_STRFTIME:
blame_date_width = strlen(show_date(0, 0, blame_date_mode)) + 1; /* add the null */
break;
}
blame_date_width -= 1; /* strip the null */
if (revs.diffopt.flags.find_copies_harder)
opt |= (PICKAXE_BLAME_COPY | PICKAXE_BLAME_MOVE |
PICKAXE_BLAME_COPY_HARDER);
/*
* We have collected options unknown to us in argv[1..unk]
* which are to be passed to revision machinery if we are
* going to do the "bottom" processing.
*
* The remaining are:
*
* (1) if dashdash_pos != 0, it is either
* "blame [revisions] -- <path>" or
* "blame -- <path> <rev>"
*
* (2) otherwise, it is one of the two:
* "blame [revisions] <path>"
* "blame <path> <rev>"
*
* Note that we must strip out <path> from the arguments: we do not
* want the path pruning but we may want "bottom" processing.
*/
if (dashdash_pos) {
switch (argc - dashdash_pos - 1) {
case 2: /* (1b) */
if (argc != 4)
usage_with_options(opt_usage, options);
/* reorder for the new way: <rev> -- <path> */
argv[1] = argv[3];
argv[3] = argv[2];
argv[2] = "--";
/* FALLTHROUGH */
case 1: /* (1a) */
path = add_prefix(prefix, argv[--argc]);
argv[argc] = NULL;
break;
default:
usage_with_options(opt_usage, options);
}
} else {
if (argc < 2)
usage_with_options(opt_usage, options);
if (argc == 3 && is_a_rev(argv[argc - 1])) { /* (2b) */
path = add_prefix(prefix, argv[1]);
argv[1] = argv[2];
} else { /* (2a) */
if (argc == 2 && is_a_rev(argv[1]) && !repo_get_work_tree(the_repository))
die("missing <path> to blame");
path = add_prefix(prefix, argv[argc - 1]);
}
argv[argc - 1] = "--";
}
revs.disable_stdin = 1;
setup_revisions(argc, argv, &revs, NULL);
if (!revs.pending.nr && is_bare_repository()) {
struct commit *head_commit;
struct object_id head_oid;
if (!refs_resolve_ref_unsafe(get_main_ref_store(the_repository), "HEAD", RESOLVE_REF_READING,
&head_oid, NULL) ||
!(head_commit = lookup_commit_reference_gently(revs.repo,
&head_oid, 1)))
die("no such ref: HEAD");
add_pending_object(&revs, &head_commit->object, "HEAD");
}
init_scoreboard(&sb);
sb.revs = &revs;
sb.contents_from = contents_from;
sb.reverse = reverse;
sb.repo = the_repository;
sb.path = path;
build_ignorelist(&sb, &ignore_revs_file_list, &ignore_rev_list);
string_list_clear(&ignore_revs_file_list, 0);
string_list_clear(&ignore_rev_list, 0);
setup_scoreboard(&sb, &o);
/*
* Changed-path Bloom filters are disabled when looking
* for copies.
*/
if (!(opt & PICKAXE_BLAME_COPY))
setup_blame_bloom_data(&sb);
lno = sb.num_lines;
if (lno && !range_list.nr)
string_list_append(&range_list, "1");
anchor = 1;
range_set_init(&ranges, range_list.nr);
for (range_i = 0; range_i < range_list.nr; ++range_i) {
long bottom, top;
if (parse_range_arg(range_list.items[range_i].string,
nth_line_cb, &sb, lno, anchor,
&bottom, &top, sb.path,
the_repository->index))
usage(str_usage);
if ((!lno && (top || bottom)) || lno < bottom)
die(Q_("file %s has only %lu line",
"file %s has only %lu lines",
lno), sb.path, lno);
if (bottom < 1)
bottom = 1;
if (top < 1 || lno < top)
top = lno;
bottom--;
range_set_append_unsafe(&ranges, bottom, top);
anchor = top + 1;
}
sort_and_merge_range_set(&ranges);
for (range_i = ranges.nr; range_i > 0; --range_i) {
const struct range *r = &ranges.ranges[range_i - 1];
ent = blame_entry_prepend(ent, r->start, r->end, o);
num_lines += (r->end - r->start);
}
if (!num_lines)
num_lines = sb.num_lines;
o->suspects = ent;
prio_queue_put(&sb.commits, o->commit);
blame_origin_decref(o);
range_set_release(&ranges);
string_list_clear(&range_list, 0);
sb.ent = NULL;
if (blame_move_score)
sb.move_score = blame_move_score;
if (blame_copy_score)
sb.copy_score = blame_copy_score;
sb.debug = DEBUG_BLAME;
sb.on_sanity_fail = &sanity_check_on_fail;
sb.show_root = show_root;
sb.xdl_opts = xdl_opts;
sb.no_whole_file_rename = no_whole_file_rename;
read_mailmap(&mailmap);
sb.found_guilty_entry = &found_guilty_entry;
sb.found_guilty_entry_data = π
if (show_progress)
pi.progress = start_delayed_progress(the_repository,
_("Blaming lines"),
num_lines);
assign_blame(&sb, opt);
stop_progress(&pi.progress);
if (!incremental)
setup_pager(the_repository);
else
goto cleanup;
blame_sort_final(&sb);
blame_coalesce(&sb);
if (!(output_option & (OUTPUT_COLOR_LINE | OUTPUT_SHOW_AGE_WITH_COLOR)))
output_option |= coloring_mode;
if (!(output_option & OUTPUT_PORCELAIN)) {
find_alignment(&sb, &output_option);
if (!*repeated_meta_color &&
(output_option & OUTPUT_COLOR_LINE))
xsnprintf(repeated_meta_color,
sizeof(repeated_meta_color),
"%s", GIT_COLOR_CYAN);
}
if (output_option & OUTPUT_ANNOTATE_COMPAT)
output_option &= ~(OUTPUT_COLOR_LINE | OUTPUT_SHOW_AGE_WITH_COLOR);
output(&sb, output_option);
if (show_stats) {
printf("num read blob: %d\n", sb.num_read_blob);
printf("num get patch: %d\n", sb.num_get_patch);
printf("num commits: %d\n", sb.num_commits);
}
cleanup:
for (ent = sb.ent; ent; ) {
struct blame_entry *e = ent->next;
free(ent);
ent = e;
}
free(path);
cleanup_scoreboard(&sb);
release_revisions(&revs);
return 0;
}