has_sha1_pack(): refactor "pretend these packs do not exist" interface

Most of the callers of this function except only one pass NULL to its last
parameter, ignore_packed.

Introduce has_sha1_kept_pack() function that has the function signature
and the semantics of this function, and convert the sole caller that does
not pass NULL to call this new function.

All other callers and has_sha1_pack() lose the ignore_packed parameter.

Signed-off-by: Junio C Hamano <gitster@pobox.com>

builtin-count-objects.c

diff --git a/builtin-count-objects.c b/builtin-count-objects.c
index 91b5487..c095e8d 100644
--- a/builtin-count-objects.c
+++ b/builtin-count-objects.c
@@ -61,7 +61,7 @@
 		hex[40] = 0;
 		if (get_sha1_hex(hex, sha1))
 			die("internal error");
-		if (has_sha1_pack(sha1, NULL))
+		if (has_sha1_pack(sha1))
 			(*packed_loose)++;
 	}
 }

builtin-fsck.c

diff --git a/builtin-fsck.c b/builtin-fsck.c
index 30971ce..491375d 100644
--- a/builtin-fsck.c
+++ b/builtin-fsck.c
@@ -158,7 +158,7 @@
 	 * do a full fsck
 	 */
 	if (!obj->parsed) {
-		if (has_sha1_pack(obj->sha1, NULL))
+		if (has_sha1_pack(obj->sha1))
 			return; /* it is in pack - forget about it */
 		printf("missing %s %s\n", typename(obj->type), sha1_to_hex(obj->sha1));
 		errors_found |= ERROR_REACHABLE;

builtin-prune-packed.c

diff --git a/builtin-prune-packed.c b/builtin-prune-packed.c
index 10cb8df..2d5b2cd 100644
--- a/builtin-prune-packed.c
+++ b/builtin-prune-packed.c
@@ -23,7 +23,7 @@
 		memcpy(hex+2, de->d_name, 38);
 		if (get_sha1_hex(hex, sha1))
 			continue;
-		if (!has_sha1_pack(sha1, NULL))
+		if (!has_sha1_pack(sha1))
 			continue;
 		memcpy(pathname + len, de->d_name, 38);
 		if (opts & DRY_RUN)

cache.h

diff --git a/cache.h b/cache.h
index 42f2f27..c1539bf 100644
--- a/cache.h
+++ b/cache.h
@@ -565,7 +565,8 @@
 
 extern int move_temp_to_file(const char *tmpfile, const char *filename);
 
-extern int has_sha1_pack(const unsigned char *sha1, const char **ignore);
+extern int has_sha1_pack(const unsigned char *sha1);
+extern int has_sha1_kept_pack(const unsigned char *sha1, const char **ignore);
 extern int has_sha1_file(const unsigned char *sha1);
 extern int has_loose_object_nonlocal(const unsigned char *sha1);
 

diff.c

diff --git a/diff.c b/diff.c
index f91f256..a34d26c 100644
--- a/diff.c
+++ b/diff.c
@@ -1743,7 +1743,7 @@
 	 * objects however would tend to be slower as they need
 	 * to be individually opened and inflated.
 	 */
-	if (!FAST_WORKING_DIRECTORY && !want_file && has_sha1_pack(sha1, NULL))
+	if (!FAST_WORKING_DIRECTORY && !want_file && has_sha1_pack(sha1))
 		return 0;
 
 	len = strlen(name);

revision.c

diff --git a/revision.c b/revision.c
index 45fd7a3..746eeed 100644
--- a/revision.c
+++ b/revision.c
@@ -1485,7 +1485,8 @@
 {
 	if (commit->object.flags & SHOWN)
 		return commit_ignore;
-	if (revs->unpacked && has_sha1_pack(commit->object.sha1, revs->ignore_packed))
+	if (revs->unpacked &&
+	    has_sha1_kept_pack(commit->object.sha1, revs->ignore_packed))
 		return commit_ignore;
 	if (revs->show_all)
 		return commit_show;

sha1_file.c

diff --git a/sha1_file.c b/sha1_file.c
index 88035a0..ac4375d 100644
--- a/sha1_file.c
+++ b/sha1_file.c
@@ -1874,7 +1874,8 @@
 	return 0;
 }
 
-static int find_pack_entry(const unsigned char *sha1, struct pack_entry *e, const char **ignore_packed)
+static int find_pack_ent(const unsigned char *sha1, struct pack_entry *e,
+			 const char **ignore_packed)
 {
 	static struct packed_git *last_found = (void *)1;
 	struct packed_git *p;
@@ -1934,6 +1935,17 @@
 	return 0;
 }
 
+static int find_pack_entry(const unsigned char *sha1, struct pack_entry *e)
+{
+	return find_pack_ent(sha1, e, NULL);
+}
+
+static int find_kept_pack_entry(const unsigned char *sha1, struct pack_entry *e,
+				const char **ignore_packed)
+{
+	return find_pack_ent(sha1, e, ignore_packed);
+}
+
 struct packed_git *find_sha1_pack(const unsigned char *sha1,
 				  struct packed_git *packs)
 {
@@ -1975,7 +1987,7 @@
 	struct pack_entry e;
 	int status;
 
-	if (!find_pack_entry(sha1, &e, NULL)) {
+	if (!find_pack_entry(sha1, &e)) {
 		/* Most likely it's a loose object. */
 		status = sha1_loose_object_info(sha1, sizep);
 		if (status >= 0)
@@ -1983,7 +1995,7 @@
 
 		/* Not a loose object; someone else may have just packed it. */
 		reprepare_packed_git();
-		if (!find_pack_entry(sha1, &e, NULL))
+		if (!find_pack_entry(sha1, &e))
 			return status;
 	}
 	return packed_object_info(e.p, e.offset, sizep);
@@ -1995,7 +2007,7 @@
 	struct pack_entry e;
 	void *data;
 
-	if (!find_pack_entry(sha1, &e, NULL))
+	if (!find_pack_entry(sha1, &e))
 		return NULL;
 	data = cache_or_unpack_entry(e.p, e.offset, size, type, 1);
 	if (!data) {
@@ -2395,17 +2407,23 @@
 	return 1;
 }
 
-int has_sha1_pack(const unsigned char *sha1, const char **ignore_packed)
+int has_sha1_pack(const unsigned char *sha1)
 {
 	struct pack_entry e;
-	return find_pack_entry(sha1, &e, ignore_packed);
+	return find_pack_entry(sha1, &e);
+}
+
+int has_sha1_kept_pack(const unsigned char *sha1, const char **ignore_packed)
+{
+	struct pack_entry e;
+	return find_kept_pack_entry(sha1, &e, ignore_packed);
 }
 
 int has_sha1_file(const unsigned char *sha1)
 {
 	struct pack_entry e;
 
-	if (find_pack_entry(sha1, &e, NULL))
+	if (find_pack_entry(sha1, &e))
 		return 1;
 	return has_loose_object(sha1);
 }