[GSoC][PATCH v5 02/12] fsck: use "fsck_configs" to set up configs

[shejialuo <shejialuo@xxxxxxxxx>]

Some fields such as "msg_type" and "skiplist" in "fsck_objects_options"
are not options, these fields are related to "git-config(1)" which are
initialized using "git_fsck_config" function.  Create a static variable
named "fsck_configs" in "fsck.c" which aims at handling configs. Thus we
don't need to reply on the "fsck_objects_options" to set up the fsck
error message severity.

Mentored-by: Patrick Steinhardt <ps@xxxxxx>
Mentored-by: Karthik Nayak <karthik.188@xxxxxxxxx>
Signed-off-by: shejialuo <shejialuo@xxxxxxxxx>
---
 fsck.c | 29 ++++++++++++++++++-----------
 fsck.h |  3 ---
 2 files changed, 18 insertions(+), 14 deletions(-)

diff --git a/fsck.c b/fsck.c
index c24a0f9fae..81b93f02fc 100644
--- a/fsck.c
+++ b/fsck.c
@@ -24,6 +24,14 @@
 
 static ssize_t max_tree_entry_len = 4096;
 
+static struct {
+	enum fsck_msg_type *msg_type;
+	struct oidset oid_skiplist;
+} fsck_configs = {
+	.msg_type = NULL,
+	.oid_skiplist = OIDSET_INIT
+};
+
 #define STR(x) #x
 #define MSG_ID(id, msg_type) { STR(id), NULL, NULL, FSCK_##msg_type },
 static struct {
@@ -103,7 +111,7 @@ static enum fsck_msg_type fsck_msg_type(enum fsck_msg_id msg_id,
 {
 	assert(msg_id >= 0 && msg_id < FSCK_MSG_MAX);
 
-	if (!options->msg_type) {
+	if (!fsck_configs.msg_type) {
 		enum fsck_msg_type msg_type = msg_id_info[msg_id].msg_type;
 
 		if (options->strict && msg_type == FSCK_WARN)
@@ -111,7 +119,7 @@ static enum fsck_msg_type fsck_msg_type(enum fsck_msg_id msg_id,
 		return msg_type;
 	}
 
-	return options->msg_type[msg_id];
+	return fsck_configs.msg_type[msg_id];
 }
 
 static enum fsck_msg_type parse_msg_type(const char *str)
@@ -138,16 +146,16 @@ void fsck_set_msg_type_from_ids(struct fsck_objects_options *options,
 				enum fsck_msg_id msg_id,
 				enum fsck_msg_type msg_type)
 {
-	if (!options->msg_type) {
+	if (!fsck_configs.msg_type) {
 		int i;
 		enum fsck_msg_type *severity;
 		ALLOC_ARRAY(severity, FSCK_MSG_MAX);
 		for (i = 0; i < FSCK_MSG_MAX; i++)
 			severity[i] = fsck_msg_type(i, options);
-		options->msg_type = severity;
+		fsck_configs.msg_type = severity;
 	}
 
-	options->msg_type[msg_id] = msg_type;
+	fsck_configs.msg_type[msg_id] = msg_type;
 }
 
 void fsck_set_msg_type(struct fsck_objects_options *options,
@@ -203,7 +211,7 @@ void fsck_set_msg_types(struct fsck_objects_options *options, const char *values
 		if (!strcmp(buf, "skiplist")) {
 			if (equal == len)
 				die("skiplist requires a path");
-			oidset_parse_file(&options->skiplist, buf + equal + 1);
+			oidset_parse_file(&fsck_configs.oid_skiplist, buf + equal + 1);
 			buf += len + 1;
 			continue;
 		}
@@ -217,10 +225,9 @@ void fsck_set_msg_types(struct fsck_objects_options *options, const char *values
 	free(to_free);
 }
 
-static int object_on_skiplist(struct fsck_objects_options *opts,
-			      const struct object_id *oid)
+static int object_on_skiplist(const struct object_id *oid)
 {
-	return opts && oid && oidset_contains(&opts->skiplist, oid);
+	return oid && oidset_contains(&fsck_configs.oid_skiplist, oid);
 }
 
 __attribute__((format (printf, 5, 6)))
@@ -236,7 +243,7 @@ static int report(struct fsck_objects_options *options,
 	if (msg_type == FSCK_IGNORE)
 		return 0;
 
-	if (object_on_skiplist(options, oid))
+	if (object_on_skiplist(oid))
 		return 0;
 
 	if (msg_type == FSCK_FATAL)
@@ -1109,7 +1116,7 @@ static int fsck_blob(const struct object_id *oid, const char *buf,
 {
 	int ret = 0;
 
-	if (object_on_skiplist(options, oid))
+	if (object_on_skiplist(oid))
 		return 0;
 
 	if (oidset_contains(&options->gitmodules_found, oid)) {
diff --git a/fsck.h b/fsck.h
index b64164db17..37deadc4bd 100644
--- a/fsck.h
+++ b/fsck.h
@@ -135,8 +135,6 @@ struct fsck_objects_options {
 	fsck_walk_func walk;
 	fsck_error error_func;
 	unsigned strict:1;
-	enum fsck_msg_type *msg_type;
-	struct oidset skiplist;
 	struct oidset gitmodules_found;
 	struct oidset gitmodules_done;
 	struct oidset gitattributes_found;
@@ -145,7 +143,6 @@ struct fsck_objects_options {
 };
 
 #define FSCK_OBJECTS_OPTIONS_DEFAULT { \
-	.skiplist = OIDSET_INIT, \
 	.gitmodules_found = OIDSET_INIT, \
 	.gitmodules_done = OIDSET_INIT, \
 	.gitattributes_found = OIDSET_INIT, \
-- 
2.45.2