Abstract out accesses to object hash array

There are a few special places where some programs accessed the object
hash array directly, which bothered me because I wanted to play with some
simple re-organizations.

So this patch makes the object hash array data structures all entirely
local to object.c, and the few users who wanted to look at it now get to
use a function to query how many object index entries there can be, and to
actually access the array.

Signed-off-by: Linus Torvalds <torvalds@osdl.org>
Signed-off-by: Junio C Hamano <junkio@cox.net>

fsck-objects.c

@@ -60,12 +60,13 @@ static int objwarning(struct object *obj, const char *err, ...)
 
 static void check_connectivity(void)
 {
-	int i;
+	int i, max;
 
 	/* Look up all the requirements, warn about missing objects.. */
-	for (i = 0; i < obj_allocs; i++) {
+	max = get_max_object_index();
+	for (i = 0; i < max; i++) {
 		const struct object_refs *refs;
-		struct object *obj = objs[i];
+		struct object *obj = get_indexed_object(i);
 
 		if (!obj)
 			continue;

name-rev.c

@@ -234,12 +234,15 @@ int main(int argc, char **argv)
 				fwrite(p_start, p - p_start, 1, stdout);
 		}
 	} else if (all) {
-		int i;
+		int i, max;
 
-		for (i = 0; i < obj_allocs; i++)
-			if (objs[i])
-				printf("%s %s\n", sha1_to_hex(objs[i]->sha1),
-						get_rev_name(objs[i]));
+		max = get_max_object_index();
+		for (i = 0; i < max; i++) {
+			struct object * obj = get_indexed_object(i);
+			if (!obj)
+				continue;
+			printf("%s %s\n", sha1_to_hex(obj->sha1), get_rev_name(obj));
+		}
 	} else {
 		int i;
 		for (i = 0; i < revs.nr; i++)

object.c

@@ -5,9 +5,18 @@
 #include "commit.h"
 #include "tag.h"
 
-struct object **objs;
-static int nr_objs;
-int obj_allocs;
+static struct object **objs;
+static int nr_objs, obj_allocs;
+
+unsigned int get_max_object_index(void)
+{
+	return obj_allocs;
+}
+
+struct object *get_indexed_object(unsigned int idx)
+{
+	return objs[idx];
+}
 
 const char *type_names[] = {
 	"none", "blob", "tree", "commit", "bad"

object.h

@@ -40,10 +40,11 @@ struct object {
 };
 
 extern int track_object_refs;
-extern int obj_allocs;
-extern struct object **objs;
 extern const char *type_names[];
 
+extern unsigned int get_max_object_index(void);
+extern struct object *get_indexed_object(unsigned int);
+
 static inline const char *typename(unsigned int type)
 {
 	return type_names[type > TYPE_TAG ? TYPE_BAD : type];