[PATCH 07/19] commit: allow parse_commit* to handle arbitrary repositories

[Stefan Beller <sbeller@xxxxxxxxxx>]

Just like the previous commit, parse_commit and friends are used a lot
and are found in new patches, so we cannot change their signature easily.

Re-introduce these function prefixed with 'repo_' that take a repository
argument and keep the original as a shallow macro.

Signed-off-by: Stefan Beller <sbeller@xxxxxxxxxx>
Signed-off-by: Junio C Hamano <gitster@xxxxxxxxx>
---
 commit.c                                | 18 +++++++++++-------
 commit.h                                | 17 +++++++++++++----
 contrib/coccinelle/the_repository.cocci | 24 ++++++++++++++++++++++++
 3 files changed, 48 insertions(+), 11 deletions(-)

diff --git a/commit.c b/commit.c
index 5781f9bc67..fe942754e2 100644
--- a/commit.c
+++ b/commit.c
@@ -443,7 +443,10 @@ int parse_commit_buffer(struct repository *r, struct commit *item, const void *b
 	return 0;
 }
 
-int parse_commit_internal(struct commit *item, int quiet_on_missing, int use_commit_graph)
+int repo_parse_commit_internal(struct repository *r,
+			       struct commit *item,
+			       int quiet_on_missing,
+			       int use_commit_graph)
 {
 	enum object_type type;
 	void *buffer;
@@ -454,9 +457,9 @@ int parse_commit_internal(struct commit *item, int quiet_on_missing, int use_com
 		return -1;
 	if (item->object.parsed)
 		return 0;
-	if (use_commit_graph && parse_commit_in_graph(the_repository, item))
+	if (use_commit_graph && parse_commit_in_graph(r, item))
 		return 0;
-	buffer = read_object_file(&item->object.oid, &type, &size);
+	buffer = repo_read_object_file(r, &item->object.oid, &type, &size);
 	if (!buffer)
 		return quiet_on_missing ? -1 :
 			error("Could not read %s",
@@ -467,18 +470,19 @@ int parse_commit_internal(struct commit *item, int quiet_on_missing, int use_com
 			     oid_to_hex(&item->object.oid));
 	}
 
-	ret = parse_commit_buffer(the_repository, item, buffer, size, 0);
+	ret = parse_commit_buffer(r, item, buffer, size, 0);
 	if (save_commit_buffer && !ret) {
-		set_commit_buffer(the_repository, item, buffer, size);
+		set_commit_buffer(r, item, buffer, size);
 		return 0;
 	}
 	free(buffer);
 	return ret;
 }
 
-int parse_commit_gently(struct commit *item, int quiet_on_missing)
+int repo_parse_commit_gently(struct repository *r,
+			     struct commit *item, int quiet_on_missing)
 {
-	return parse_commit_internal(item, quiet_on_missing, 1);
+	return repo_parse_commit_internal(r, item, quiet_on_missing, 1);
 }
 
 void parse_commit_or_die(struct commit *item)
diff --git a/commit.h b/commit.h
index e2c99d9b04..58a0c5409b 100644
--- a/commit.h
+++ b/commit.h
@@ -79,12 +79,21 @@ struct commit *lookup_commit_reference_by_name(const char *name);
 struct commit *lookup_commit_or_die(const struct object_id *oid, const char *ref_name);
 
 int parse_commit_buffer(struct repository *r, struct commit *item, const void *buffer, unsigned long size, int check_graph);
-int parse_commit_internal(struct commit *item, int quiet_on_missing, int use_commit_graph);
-int parse_commit_gently(struct commit *item, int quiet_on_missing);
-static inline int parse_commit(struct commit *item)
+int repo_parse_commit_internal(struct repository *r, struct commit *item,
+			       int quiet_on_missing, int use_commit_graph);
+int repo_parse_commit_gently(struct repository *r,
+			     struct commit *item,
+			     int quiet_on_missing);
+static inline int repo_parse_commit(struct repository *r, struct commit *item)
 {
-	return parse_commit_gently(item, 0);
+	return repo_parse_commit_gently(r, item, 0);
 }
+#ifndef NO_THE_REPOSITORY_COMPATIBILITY_MACROS
+#define parse_commit_internal(item, quiet, use) repo_parse_commit_internal(the_repository, item, quiet, use)
+#define parse_commit_gently(item, quiet) repo_parse_commit_gently(the_repository, item, quiet)
+#define parse_commit(item) repo_parse_commit(the_repository, item)
+#endif
+
 void parse_commit_or_die(struct commit *item);
 
 struct buffer_slab;
diff --git a/contrib/coccinelle/the_repository.cocci b/contrib/coccinelle/the_repository.cocci
index 46f3a1b23a..b185fe0a1d 100644
--- a/contrib/coccinelle/the_repository.cocci
+++ b/contrib/coccinelle/the_repository.cocci
@@ -40,3 +40,27 @@ expression F;
 - has_object_file_with_flags(
 + repo_has_object_file_with_flags(the_repository,
   E)
+
+@@
+expression E;
+expression F;
+expression G;
+@@
+- parse_commit_internal(
++ repo_parse_commit_internal(the_repository,
+  E, F, G)
+
+@@
+expression E;
+expression F;
+@@
+- parse_commit_gently(
++ repo_parse_commit_gently(the_repository,
+  E, F)
+
+@@
+expression E;
+@@
+- parse_commit(
++ repo_parse_commit(the_repository,
+  E)
-- 
2.19.0