git-repack --max-pack-size: code restructuring

index ac2c15e..bc45ca6 100644
@@ -62,6 +62,7 @@ static int incremental;
 static int allow_ofs_delta;
 static const char *pack_tmp_name, *idx_tmp_name;
 static char tmpname[PATH_MAX];
+static const char *base_name;
 static unsigned char pack_file_sha1[20];
 static int progress = 1;
 static int window = 10;

@@ -561,7 +562,11 @@ static off_t write_one(struct sha1file *f,
 	return offset + size;
 }
 
-static off_t write_pack_file(void)
+/* forward declarations for write_pack_file */
+static void write_index_file(off_t last_obj_offset, unsigned char *sha1);
+static int adjust_perm(const char *path, mode_t mode);
+
+static void write_pack_file(void)
 {
 	uint32_t i;
 	struct sha1file *f;

@@ -605,7 +610,32 @@ static off_t write_pack_file(void)
 		die("wrote %u objects while expecting %u", written, nr_result);
 	sha1close(f, pack_file_sha1, 1);
 
-	return last_obj_offset;
+	if (!pack_to_stdout) {
+		unsigned char object_list_sha1[20];
+		mode_t mode = umask(0);
+
+		umask(mode);
+		mode = 0444 & ~mode;
+
+		write_index_file(last_obj_offset, object_list_sha1);
+		snprintf(tmpname, sizeof(tmpname), "%s-%s.pack",
+			 base_name, sha1_to_hex(object_list_sha1));
+		if (adjust_perm(pack_tmp_name, mode))
+			die("unable to make temporary pack file readable: %s",
+			    strerror(errno));
+		if (rename(pack_tmp_name, tmpname))
+			die("unable to rename temporary pack file: %s",
+			    strerror(errno));
+		snprintf(tmpname, sizeof(tmpname), "%s-%s.idx",
+			 base_name, sha1_to_hex(object_list_sha1));
+		if (adjust_perm(idx_tmp_name, mode))
+			die("unable to make temporary index file readable: %s",
+			    strerror(errno));
+		if (rename(idx_tmp_name, tmpname))
+			die("unable to rename temporary index file: %s",
+			    strerror(errno));
+		puts(sha1_to_hex(object_list_sha1));
+	}
 }
 
 static int sha1_sort(const void *_a, const void *_b)

@@ -1588,8 +1618,6 @@ int cmd_pack_objects(int argc, const char **argv, const char *prefix)
 	int use_internal_rev_list = 0;
 	int thin = 0;
 	uint32_t i;
-	off_t last_obj_offset;
-	const char *base_name = NULL;
 	const char **rp_av;
 	int rp_ac_alloc = 64;
 	int rp_ac;

@@ -1740,33 +1768,7 @@ int cmd_pack_objects(int argc, const char **argv, const char *prefix)
 		fprintf(stderr, "Result has %u objects.\n", nr_result);
 	if (nr_result)
 		prepare_pack(window, depth);
-	last_obj_offset = write_pack_file();
-	if (!pack_to_stdout) {
-		unsigned char object_list_sha1[20];
-		mode_t mode = umask(0);
-
-		umask(mode);
-		mode = 0444 & ~mode;
-
-		write_index_file(last_obj_offset, object_list_sha1);
-		snprintf(tmpname, sizeof(tmpname), "%s-%s.pack",
-			 base_name, sha1_to_hex(object_list_sha1));
-		if (adjust_perm(pack_tmp_name, mode))
-			die("unable to make temporary pack file readable: %s",
-			    strerror(errno));
-		if (rename(pack_tmp_name, tmpname))
-			die("unable to rename temporary pack file: %s",
-			    strerror(errno));
-		snprintf(tmpname, sizeof(tmpname), "%s-%s.idx",
-			 base_name, sha1_to_hex(object_list_sha1));
-		if (adjust_perm(idx_tmp_name, mode))
-			die("unable to make temporary index file readable: %s",
-			    strerror(errno));
-		if (rename(idx_tmp_name, tmpname))
-			die("unable to rename temporary index file: %s",
-			    strerror(errno));
-		puts(sha1_to_hex(object_list_sha1));
-	}
+	write_pack_file();
 	if (progress)
 		fprintf(stderr, "Total %u (delta %u), reused %u (delta %u)\n",
 			written, written_delta, reused, reused_delta);