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shortlog: support arbitrary commit format `--group`s
In addition to generating a shortlog based on committer, author, or the
identity in one or more specified trailers, it can be useful to generate
a shortlog based on an arbitrary commit format.
This can be used, for example, to generate a distribution of commit
activity over time, like so:
$ git shortlog --group='%cd' --date='format:%Y-%m' -s v2.37.0..
117 2022-06
274 2022-07
324 2022-08
263 2022-09
7 2022-10
Arbitrary commit formats can be used. In fact, `git shortlog`'s default
behavior (to count by commit authors) can be emulated as follows:
$ git shortlog --group='%aN <%aE>' ...
and future patches will make the default behavior (as well as
`--committer`, and `--group=trailer:<trailer>`) special cases of the
more flexible `--group` option.
Note also that the SHORTLOG_GROUP_FORMAT enum value is used only to
designate that `--group:<format>` is in use when in stdin mode to
declare that the combination is invalid.
Signed-off-by: Taylor Blau <me@ttaylorr.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
This commit is contained in:
Taylor Blau
Junio C Hamano
parent
b017d3dae9
commit
3dc95e09e1
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@ -50,7 +50,7 @@ OPTIONS
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--date=<format>::
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Show dates formatted according to the given date string. (See
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the `--date` option in the "Commit Formatting" section of
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linkgit:git-log[1]).
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linkgit:git-log[1]). Useful with `--group=format:<format>`.
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--group=<type>::
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Group commits based on `<type>`. If no `--group` option is
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@ -64,6 +64,9 @@ OPTIONS
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example, if your project uses `Reviewed-by` trailers, you might want
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to see who has been reviewing with
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`git shortlog -ns --group=trailer:reviewed-by`.
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- `format:<format>`, any string accepted by the `--format` option of
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'git log'. (See the "PRETTY FORMATS" section of
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linkgit:git-log[1].)
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+
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Note that commits that do not include the trailer will not be counted.
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Likewise, commits with multiple trailers (e.g., multiple signoffs) may
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@ -133,6 +133,8 @@ static void read_from_stdin(struct shortlog *log)
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break;
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case SHORTLOG_GROUP_TRAILER:
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die(_("using %s with stdin is not supported"), "--group=trailer");
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case SHORTLOG_GROUP_FORMAT:
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die(_("using %s with stdin is not supported"), "--group=format");
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default:
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BUG("unhandled shortlog group");
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}
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@ -203,6 +205,32 @@ static void insert_records_from_trailers(struct shortlog *log,
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unuse_commit_buffer(commit, commit_buffer);
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}
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static int shortlog_needs_dedup(const struct shortlog *log)
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{
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return HAS_MULTI_BITS(log->groups) || log->format.nr > 1 || log->trailers.nr;
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}
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static void insert_records_from_format(struct shortlog *log,
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struct strset *dups,
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struct commit *commit,
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struct pretty_print_context *ctx,
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const char *oneline)
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{
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struct strbuf buf = STRBUF_INIT;
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struct string_list_item *item;
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for_each_string_list_item(item, &log->format) {
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strbuf_reset(&buf);
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format_commit_message(commit, item->string, &buf, ctx);
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if (!shortlog_needs_dedup(log) || strset_add(dups, buf.buf))
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insert_one_record(log, buf.buf, oneline);
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}
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strbuf_release(&buf);
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}
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void shortlog_add_commit(struct shortlog *log, struct commit *commit)
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{
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struct strbuf ident = STRBUF_INIT;
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@ -244,6 +272,7 @@ void shortlog_add_commit(struct shortlog *log, struct commit *commit)
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insert_one_record(log, ident.buf, oneline_str);
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}
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insert_records_from_trailers(log, &dups, commit, &ctx, oneline_str);
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insert_records_from_format(log, &dups, commit, &ctx, oneline_str);
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strset_clear(&dups);
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strbuf_release(&ident);
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@ -315,6 +344,7 @@ static int parse_group_option(const struct option *opt, const char *arg, int uns
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if (unset) {
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log->groups = 0;
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string_list_clear(&log->trailers, 0);
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string_list_clear(&log->format, 0);
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} else if (!strcasecmp(arg, "author"))
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log->groups |= SHORTLOG_GROUP_AUTHOR;
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else if (!strcasecmp(arg, "committer"))
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@ -322,8 +352,15 @@ static int parse_group_option(const struct option *opt, const char *arg, int uns
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else if (skip_prefix(arg, "trailer:", &field)) {
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log->groups |= SHORTLOG_GROUP_TRAILER;
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string_list_append(&log->trailers, field);
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} else
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} else if (skip_prefix(arg, "format:", &field)) {
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log->groups |= SHORTLOG_GROUP_FORMAT;
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string_list_append(&log->format, field);
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} else if (strchr(arg, '%')) {
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log->groups |= SHORTLOG_GROUP_FORMAT;
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string_list_append(&log->format, arg);
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} else {
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return error(_("unknown group type: %s"), arg);
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}
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return 0;
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}
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@ -341,6 +378,7 @@ void shortlog_init(struct shortlog *log)
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log->in2 = DEFAULT_INDENT2;
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log->trailers.strdup_strings = 1;
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log->trailers.cmp = strcasecmp;
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log->format.strdup_strings = 1;
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}
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int cmd_shortlog(int argc, const char **argv, const char *prefix)
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@ -481,4 +519,5 @@ void shortlog_output(struct shortlog *log)
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log->list.strdup_strings = 1;
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string_list_clear(&log->list, 1);
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clear_mailmap(&log->mailmap);
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string_list_clear(&log->format, 0);
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}
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@ -22,8 +22,10 @@ struct shortlog {
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SHORTLOG_GROUP_AUTHOR = (1 << 0),
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SHORTLOG_GROUP_COMMITTER = (1 << 1),
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SHORTLOG_GROUP_TRAILER = (1 << 2),
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SHORTLOG_GROUP_FORMAT = (1 << 3),
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} groups;
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struct string_list trailers;
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struct string_list format;
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int email;
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struct string_list mailmap;
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@ -244,6 +244,26 @@ test_expect_success 'shortlog --group=trailer:signed-off-by' '
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test_cmp expect actual
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'
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test_expect_success 'shortlog --group=format' '
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git shortlog -s --date="format:%Y" --group="format:%cN (%cd)" \
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HEAD >actual &&
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cat >expect <<-\EOF &&
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4 C O Mitter (2005)
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1 Sin Nombre (2005)
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EOF
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test_cmp expect actual
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'
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test_expect_success 'shortlog --group=<format> DWIM' '
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git shortlog -s --date="format:%Y" --group="%cN (%cd)" HEAD >actual &&
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test_cmp expect actual
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'
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test_expect_success 'shortlog bogus --group' '
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test_must_fail git shortlog --group=bogus HEAD 2>err &&
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grep "unknown group type" err
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'
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test_expect_success 'trailer idents are split' '
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cat >expect <<-\EOF &&
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2 C O Mitter
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@ -326,6 +346,18 @@ test_expect_success 'shortlog can match multiple groups' '
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test_cmp expect actual
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'
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test_expect_success 'shortlog can match multiple format groups' '
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GIT_COMMITTER_NAME="$GIT_AUTHOR_NAME" \
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git commit --allow-empty -m "identical names" &&
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test_tick &&
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cat >expect <<-\EOF &&
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2 A U Thor
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1 C O Mitter
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EOF
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git shortlog -ns --group="%cn" --group="%an" -2 HEAD >actual &&
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test_cmp expect actual
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'
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test_expect_success 'set up option selection tests' '
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git commit --allow-empty -F - <<-\EOF
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subject
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