static int reachable(struct commit *want)
{
struct prio_queue work = { compare_commits_by_commit_date };
prio_queue_put(&work, want);
while (work.nr) {
struct commit_list *list;
struct commit *commit = prio_queue_get(&work);
if (commit->object.flags & THEY_HAVE) {
want->object.flags |= COMMON_KNOWN;
break;
}
if (!commit->object.parsed)
parse_object(&commit->object.oid);
if (commit->object.flags & REACHABLE)
continue;
commit->object.flags |= REACHABLE;
if (commit->date < oldest_have)
continue;
for (list = commit->parents; list; list = list->next) {
struct commit *parent = list->item;
if (!(parent->object.flags & REACHABLE))
prio_queue_put(&work, parent);
}
}
want->object.flags |= REACHABLE;
clear_commit_marks(want, REACHABLE);
clear_prio_queue(&work);
return (want->object.flags & COMMON_KNOWN);
}
static void rev_list_push(struct commit *commit, int mark)
{
if (!(commit->object.flags & mark)) {
commit->object.flags |= mark;
if (parse_commit(commit))
return;
prio_queue_put(&rev_list, commit);
if (!(commit->object.flags & COMMON))
non_common_revs++;
}
}
static void queue_blames(struct blame_scoreboard *sb, struct blame_origin *porigin,
struct blame_entry *sorted)
{
if (porigin->suspects)
porigin->suspects = blame_merge(porigin->suspects, sorted);
else {
struct blame_origin *o;
for (o = porigin->commit->util; o; o = o->next) {
if (o->suspects) {
porigin->suspects = sorted;
return;
}
}
porigin->suspects = sorted;
prio_queue_put(&sb->commits, porigin->commit);
}
}
int cmd_blame(int argc, const char **argv, const char *prefix)
{
struct rev_info revs;
const char *path;
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;
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_("Show blank SHA-1 for 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),
/*
* The following two options are parsed by parse_revision_opt()
* and are only included here to get included in the "-h"
* output:
*/
{ OPTION_LOWLEVEL_CALLBACK, 0, "indent-heuristic", NULL, NULL, N_("Use an experimental heuristic to improve diffs"), PARSE_OPT_NOARG, parse_opt_unknown_cb },
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")),
{ OPTION_CALLBACK, 'C', NULL, &opt, N_("score"), N_("Find line copies within and across files"), PARSE_OPT_OPTARG, blame_copy_callback },
{ OPTION_CALLBACK, '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_("n,m"), N_("Process only line range n,m, counting from 1")),
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;
git_config(git_blame_config, &output_option);
init_revisions(&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, blame_opt_usage)) {
case PARSE_OPT_HELP:
exit(129);
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, blame_opt_usage);
}
parse_done:
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);
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 < GIT_SHA1_HEXSZ)
/* one more abbrev length is needed for the boundary commit */
abbrev++;
else if (!abbrev)
abbrev = GIT_SHA1_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_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(blame_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(blame_opt_usage, options);
}
} else {
if (argc < 2)
usage_with_options(blame_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]) && !get_git_work_tree())
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);
init_scoreboard(&sb);
sb.revs = &revs;
sb.contents_from = contents_from;
sb.reverse = reverse;
setup_scoreboard(&sb, path, &o);
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))
usage(blame_usage);
if (lno < top || ((lno || bottom) && lno < bottom))
die(Q_("file %s has only %lu line",
"file %s has only %lu lines",
lno), path, lno);
if (bottom < 1)
bottom = 1;
if (top < 1)
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);
}
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;
sb.path = path;
if (blame_move_score)
sb.move_score = blame_move_score;
if (blame_copy_score)
sb.copy_score = blame_copy_score;
sb.debug = DEBUG;
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, NULL);
sb.found_guilty_entry = &found_guilty_entry;
sb.found_guilty_entry_data = π
if (show_progress)
pi.progress = start_delayed_progress(_("Blaming lines"), sb.num_lines);
assign_blame(&sb, opt);
stop_progress(&pi.progress);
if (!incremental)
setup_pager();
else
return 0;
blame_sort_final(&sb);
blame_coalesce(&sb);
if (!(output_option & OUTPUT_PORCELAIN))
find_alignment(&sb, &output_option);
output(&sb, output_option);
free((void *)sb.final_buf);
for (ent = sb.ent; ent; ) {
struct blame_entry *e = ent->next;
free(ent);
ent = e;
}
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);
}
return 0;
}
static void print_object(const unsigned char *sha1, const char *path,
const char *basename, const char *rev)
{
enum object_type type;
char *buf;
unsigned long size;
struct argv_array rev_argv = ARGV_ARRAY_INIT;
struct rev_info revs;
struct blame_scoreboard sb;
struct blame_origin *o;
struct blame_entry *ent = NULL;
type = sha1_object_info(sha1, &size);
if (type == OBJ_BAD) {
cgit_print_error_page(404, "Not found", "Bad object name: %s",
sha1_to_hex(sha1));
return;
}
buf = read_sha1_file(sha1, &type, &size);
if (!buf) {
cgit_print_error_page(500, "Internal server error",
"Error reading object %s", sha1_to_hex(sha1));
return;
}
argv_array_push(&rev_argv, "blame");
argv_array_push(&rev_argv, rev);
init_revisions(&revs, NULL);
revs.diffopt.flags.allow_textconv = 1;
setup_revisions(rev_argv.argc, rev_argv.argv, &revs, NULL);
init_scoreboard(&sb);
sb.revs = &revs;
setup_scoreboard(&sb, path, &o);
o->suspects = blame_entry_prepend(NULL, 0, sb.num_lines, o);
prio_queue_put(&sb.commits, o->commit);
blame_origin_decref(o);
sb.ent = NULL;
sb.path = path;
assign_blame(&sb, 0);
blame_sort_final(&sb);
blame_coalesce(&sb);
cgit_set_title_from_path(path);
cgit_print_layout_start();
htmlf("blob: %s (", sha1_to_hex(sha1));
cgit_plain_link("plain", NULL, NULL, ctx.qry.head, rev, path);
html(") (");
cgit_tree_link("tree", NULL, NULL, ctx.qry.head, rev, path);
html(")\n");
if (ctx.cfg.max_blob_size && size / 1024 > ctx.cfg.max_blob_size) {
htmlf("<div class='error'>blob size (%ldKB)"
" exceeds display size limit (%dKB).</div>",
size / 1024, ctx.cfg.max_blob_size);
return;
}
html("<table class='blame blob'>\n<tr>\n");
/* Commit hashes */
html("<td class='hashes'>");
for (ent = sb.ent; ent; ent = ent->next) {
html("<div class='alt'><pre>");
emit_blame_entry_hash(ent);
html("</pre></div>");
}
html("</td>\n");
/* Line numbers */
if (ctx.cfg.enable_tree_linenumbers) {
html("<td class='linenumbers'>");
for (ent = sb.ent; ent; ent = ent->next) {
html("<div class='alt'><pre>");
emit_blame_entry_linenumber(ent);
html("</pre></div>");
}
html("</td>\n");
}
html("<td class='lines'><div>");
/* Colored bars behind lines */
html("<div>");
for (ent = sb.ent; ent; ) {
struct blame_entry *e = ent->next;
html("<div class='alt'><pre>");
emit_blame_entry_line_background(&sb, ent);
html("</pre></div>");
free(ent);
ent = e;
}
html("</div>");
free((void *)sb.final_buf);
/* Lines */
html("<pre><code>");
if (ctx.repo->source_filter) {
char *filter_arg = xstrdup(basename);
cgit_open_filter(ctx.repo->source_filter, filter_arg);
html_raw(buf, size);
cgit_close_filter(ctx.repo->source_filter);
free(filter_arg);
} else {
html_txt(buf);
}
html("</code></pre>");
html("</div></td>\n");
html("</tr>\n</table>\n");
cgit_print_layout_end();
}
