Merge branch 'lo/repo-info-keys'

"git repo info" learns "--keys" action to list known keys.

* lo/repo-info-keys:
  repo: add new flag --keys to git-repo-info
  repo: rename the output format "keyvalue" to "lines"

1 files changed, 42 insertions, 9 deletions

diff --git a/builtin/repo.c b/builtin/repo.c
index 0ea045abc1..6a62a6020a 100644
--- a/builtin/repo.c
+++ b/builtin/repo.c
@@ -17,8 +17,9 @@
 #include "utf8.h"
 
 static const char *const repo_usage[] = {
-	"git repo info [--format=(keyvalue|nul) | -z] [--all | <key>...]",
-	"git repo structure [--format=(table|keyvalue|nul) | -z]",
+	"git repo info [--format=(lines|nul) | -z] [--all | <key>...]",
+	"git repo info --keys [--format=(lines|nul) | -z]",
+	"git repo structure [--format=(table|lines|nul) | -z]",
 	NULL
 };
 
@@ -26,7 +27,7 @@ typedef int get_value_fn(struct repository *repo, struct strbuf *buf);
 
 enum output_format {
 	FORMAT_TABLE,
-	FORMAT_KEYVALUE,
+	FORMAT_NEWLINE_TERMINATED,
 	FORMAT_NUL_TERMINATED,
 };
 
@@ -91,7 +92,7 @@ static void print_field(enum output_format format, const char *key,
 			const char *value)
 {
 	switch (format) {
-	case FORMAT_KEYVALUE:
+	case FORMAT_NEWLINE_TERMINATED:
 		printf("%s=", key);
 		quote_c_style(value, NULL, stdout, 0);
 		putchar('\n');
@@ -148,6 +149,29 @@ static int print_all_fields(struct repository *repo,
 	return 0;
 }
 
+static int print_keys(enum output_format format)
+{
+	char sep;
+
+	switch (format) {
+	case FORMAT_NEWLINE_TERMINATED:
+		sep = '\n';
+		break;
+	case FORMAT_NUL_TERMINATED:
+		sep = '\0';
+		break;
+	default:
+		die(_("--keys can only be used with --format=lines or --format=nul"));
+	}
+
+	for (size_t i = 0; i < ARRAY_SIZE(repo_info_fields); i++) {
+		const struct field *field = &repo_info_fields[i];
+		printf("%s%c", field->key, sep);
+	}
+
+	return 0;
+}
+
 static int parse_format_cb(const struct option *opt,
 			   const char *arg, int unset UNUSED)
 {
@@ -157,8 +181,8 @@ static int parse_format_cb(const struct option *opt,
 		*format = FORMAT_NUL_TERMINATED;
 	else if (!strcmp(arg, "nul"))
 		*format = FORMAT_NUL_TERMINATED;
-	else if (!strcmp(arg, "keyvalue"))
-		*format = FORMAT_KEYVALUE;
+	else if (!strcmp(arg, "lines"))
+		*format = FORMAT_NEWLINE_TERMINATED;
 	else if (!strcmp(arg, "table"))
 		*format = FORMAT_TABLE;
 	else
@@ -170,8 +194,9 @@ static int parse_format_cb(const struct option *opt,
 static int cmd_repo_info(int argc, const char **argv, const char *prefix,
 			 struct repository *repo)
 {
-	enum output_format format = FORMAT_KEYVALUE;
+	enum output_format format = FORMAT_NEWLINE_TERMINATED;
 	int all_keys = 0;
+	int show_keys = 0;
 	struct option options[] = {
 		OPT_CALLBACK_F(0, "format", &format, N_("format"),
 			       N_("output format"),
@@ -181,11 +206,19 @@ static int cmd_repo_info(int argc, const char **argv, const char *prefix,
 			       PARSE_OPT_NONEG | PARSE_OPT_NOARG,
 			       parse_format_cb),
 		OPT_BOOL(0, "all", &all_keys, N_("print all keys/values")),
+		OPT_BOOL(0, "keys", &show_keys, N_("show keys")),
 		OPT_END()
 	};
 
 	argc = parse_options(argc, argv, prefix, options, repo_usage, 0);
-	if (format != FORMAT_KEYVALUE && format != FORMAT_NUL_TERMINATED)
+
+	if (show_keys && (all_keys || argc))
+		die(_("--keys cannot be used with a <key> or --all"));
+
+	if (show_keys)
+		return print_keys(format);
+
+	if (format != FORMAT_NEWLINE_TERMINATED && format != FORMAT_NUL_TERMINATED)
 		die(_("unsupported output format"));
 
 	if (all_keys && argc)
@@ -671,7 +704,7 @@ static int cmd_repo_structure(int argc, const char **argv, const char *prefix,
 		stats_table_setup_structure(&table, &stats);
 		stats_table_print_structure(&table);
 		break;
-	case FORMAT_KEYVALUE:
+	case FORMAT_NEWLINE_TERMINATED:
 		structure_keyvalue_print(&stats, '=', '\n');
 		break;
 	case FORMAT_NUL_TERMINATED: