[PATCH] repo: add --all to git-repo-info

[Lucas Seiki Oshiro <lucasseikioshiro@gmail.com>]

Add a new flag `--all` to git-repo-info for requesting all the available
keys. By using this flag, the user can retrieve all the values instead
of searching what are the desired keys for what they wants.

Helped-by: Karthik Nayak <karthik.188@gmail.com>
Helped-by: Patrick Steinhardt <ps@pks.im>
Signed-off-by: Lucas Seiki Oshiro <lucasseikioshiro@gmail.com>
---
Hi!

This patch is an epilogue of my GSoC, as it was requested to have some
way to retrieve all the values without needing to pass all the keys.

This is built on top of the current master, a483264b01 (The ninth
batch, 2025-09-15).

 Documentation/git-repo.adoc |  6 ++--
 builtin/repo.c              | 62 ++++++++++++++++++++++++++++---------
 t/t1900-repo.sh             |  6 ++++
 3 files changed, 56 insertions(+), 18 deletions(-)

diff --git a/Documentation/git-repo.adoc b/Documentation/git-repo.adoc
index 209afd1b61..2caf093a9a 100644
--- a/Documentation/git-repo.adoc
+++ b/Documentation/git-repo.adoc
@@ -8,7 +8,7 @@ git-repo - Retrieve information about the repository
 SYNOPSIS
 --------
 [synopsis]
-git repo info [--format=(keyvalue|nul)] [-z] [<key>...]
+git repo info [--format=(keyvalue|nul)] [-z] [--all] [<key>...]
 
 DESCRIPTION
 -----------
@@ -18,13 +18,13 @@ THIS COMMAND IS EXPERIMENTAL. THE BEHAVIOR MAY CHANGE.
 
 COMMANDS
 --------
-`info [--format=(keyvalue|nul)] [-z] [<key>...]`::
+`info [--format=(keyvalue|nul)] [-z] [--all] [<key>...]`::
 	Retrieve metadata-related information about the current repository. Only
 	the requested data will be returned based on their keys (see "INFO KEYS"
 	section below).
 +
 The values are returned in the same order in which their respective keys were
-requested.
+requested. The `--all` flag requests all keys.
 +
 The output format can be chosen through the flag `--format`. Two formats are
 supported:
diff --git a/builtin/repo.c b/builtin/repo.c
index bbb0966f2d..906d8a3e12 100644
--- a/builtin/repo.c
+++ b/builtin/repo.c
@@ -9,7 +9,7 @@
 #include "shallow.h"
 
 static const char *const repo_usage[] = {
-	"git repo info [--format=(keyvalue|nul)] [-z] [<key>...]",
+	"git repo info [--format=(keyvalue|nul)] [-z] [--all] [<key>...]",
 	NULL
 };
 
@@ -77,6 +77,24 @@ static get_value_fn *get_value_fn_for_key(const char *key)
 	return found ? found->get_value : NULL;
 }
 
+static void print_field(enum output_format format, const char *key,
+			struct strbuf *valbuf, struct strbuf *quotbuf)
+{
+	strbuf_reset(quotbuf);
+
+	switch (format) {
+	case FORMAT_KEYVALUE:
+		quote_c_style(valbuf->buf, quotbuf, NULL, 0);
+		printf("%s=%s\n", key, quotbuf->buf);
+		break;
+	case FORMAT_NUL_TERMINATED:
+		printf("%s\n%s%c", key, valbuf->buf, '\0');
+		break;
+	default:
+		BUG("not a valid output format: %d", format);
+	}
+}
+
 static int print_fields(int argc, const char **argv,
 			struct repository *repo,
 			enum output_format format)
@@ -97,21 +115,8 @@ static int print_fields(int argc, const char **argv,
 		}
 
 		strbuf_reset(&valbuf);
-		strbuf_reset(&quotbuf);
-
 		get_value(repo, &valbuf);
-
-		switch (format) {
-		case FORMAT_KEYVALUE:
-			quote_c_style(valbuf.buf, &quotbuf, NULL, 0);
-			printf("%s=%s\n", key, quotbuf.buf);
-			break;
-		case FORMAT_NUL_TERMINATED:
-			printf("%s\n%s%c", key, valbuf.buf, '\0');
-			break;
-		default:
-			BUG("not a valid output format: %d", format);
-		}
+		print_field(format, key, &valbuf, &quotbuf);
 	}
 
 	strbuf_release(&valbuf);
@@ -119,6 +124,26 @@ static int print_fields(int argc, const char **argv,
 	return ret;
 }
 
+static void print_all_fields(struct repository *repo,
+			     enum output_format format)
+{
+	struct strbuf valbuf = STRBUF_INIT;
+	struct strbuf quotbuf = STRBUF_INIT;
+
+	for (unsigned long i = 0; i < ARRAY_SIZE(repo_info_fields); i++) {
+		struct field field = repo_info_fields[i];
+		get_value_fn *get_value = field.get_value;
+		const char *key = field.key;
+
+		strbuf_reset(&valbuf);
+		get_value(repo, &valbuf);
+		print_field(format, key, &valbuf, &quotbuf);
+	}
+
+	strbuf_release(&valbuf);
+	strbuf_release(&quotbuf);
+}
+
 static int parse_format_cb(const struct option *opt,
 			   const char *arg, int unset UNUSED)
 {
@@ -140,6 +165,7 @@ static int repo_info(int argc, const char **argv, const char *prefix,
 		     struct repository *repo)
 {
 	enum output_format format = FORMAT_KEYVALUE;
+	int all_keys = 0;
 	struct option options[] = {
 		OPT_CALLBACK_F(0, "format", &format, N_("format"),
 			       N_("output format"),
@@ -148,11 +174,17 @@ static int repo_info(int argc, const char **argv, const char *prefix,
 			       N_("synonym for --format=nul"),
 			       PARSE_OPT_NONEG | PARSE_OPT_NOARG,
 			       parse_format_cb),
+		OPT_BOOL(0, "all", &all_keys, N_("return all keys")),
 		OPT_END()
 	};
 
 	argc = parse_options(argc, argv, prefix, options, repo_usage, 0);
 
+	if (all_keys) {
+		print_all_fields(repo, format);
+		return 0;
+	}
+
 	return print_fields(argc, argv, repo, format);
 }
 
diff --git a/t/t1900-repo.sh b/t/t1900-repo.sh
index 2beba67889..b1391a47b6 100755
--- a/t/t1900-repo.sh
+++ b/t/t1900-repo.sh
@@ -110,4 +110,10 @@ test_expect_success 'git repo info uses the last requested format' '
 	test_cmp expected actual
 '
 
+test_expect_success 'git repo info --all returns all fields' '
+	git repo info layout.bare layout.shallow object.format references.format >expect &&
+	git repo info --all >actual &&
+	test_cmp expect actual
+'
+
 test_done
-- 
2.39.5 (Apple Git-154)