repack: move finish_pack_objects_cmd() out of the builtin

In a similar spirit as the previous commit(s), now that the function
`finish_pack_objects_cmd()` has no explicit dependencies within the
repack builtin, let's extract it.

This prepares us to extract the remaining two functions within the
repack builtin that explicitly write packfiles, which are
`write_cruft_pack()` and `write_filtered_pack()`, which will be done in
the future commits.

Signed-off-by: Taylor Blau <me@ttaylorr.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>

Author: ttaylorr

builtin/repack.c

@@ -107,39 +107,6 @@ static int repack_config(const char *var, const char *value,
 	return git_default_config(var, value, ctx, cb);
 }
 
-static int finish_pack_objects_cmd(const struct git_hash_algo *algop,
-				   const struct write_pack_opts *opts,
-				   struct child_process *cmd,
-				   struct string_list *names)
-{
-	FILE *out;
-	bool local = write_pack_opts_is_local(opts);
-	struct strbuf line = STRBUF_INIT;
-
-	out = xfdopen(cmd->out, "r");
-	while (strbuf_getline_lf(&line, out) != EOF) {
-		struct string_list_item *item;
-
-		if (line.len != algop->hexsz)
-			die(_("repack: Expecting full hex object ID lines only "
-			      "from pack-objects."));
-		/*
-		 * Avoid putting packs written outside of the repository in the
-		 * list of names.
-		 */
-		if (local) {
-			item = string_list_append(names, line.buf);
-			item->util = generated_pack_populate(line.buf,
-							     opts->packtmp);
-		}
-	}
-	fclose(out);
-
-	strbuf_release(&line);
-
-	return finish_command(cmd);
-}
-
 static int write_filtered_pack(const struct write_pack_opts *opts,
 			       struct existing_packs *existing,
 			       struct string_list *names)

repack.c

@@ -82,6 +82,39 @@ bool write_pack_opts_is_local(const struct write_pack_opts *opts)
 	return starts_with(opts->destination, opts->packdir);
 }
 
+int finish_pack_objects_cmd(const struct git_hash_algo *algop,
+			    const struct write_pack_opts *opts,
+			    struct child_process *cmd,
+			    struct string_list *names)
+{
+	FILE *out;
+	bool local = write_pack_opts_is_local(opts);
+	struct strbuf line = STRBUF_INIT;
+
+	out = xfdopen(cmd->out, "r");
+	while (strbuf_getline_lf(&line, out) != EOF) {
+		struct string_list_item *item;
+
+		if (line.len != algop->hexsz)
+			die(_("repack: Expecting full hex object ID lines only "
+			      "from pack-objects."));
+		/*
+		 * Avoid putting packs written outside of the repository in the
+		 * list of names.
+		 */
+		if (local) {
+			item = string_list_append(names, line.buf);
+			item->util = generated_pack_populate(line.buf,
+							     opts->packtmp);
+		}
+	}
+	fclose(out);
+
+	strbuf_release(&line);
+
+	return finish_command(cmd);
+}
+
 #define DELETE_PACK 1
 #define RETAIN_PACK 2
 

repack.h

@@ -42,6 +42,11 @@ struct write_pack_opts {
 const char *write_pack_opts_pack_prefix(const struct write_pack_opts *opts);
 bool write_pack_opts_is_local(const struct write_pack_opts *opts);
 
+int finish_pack_objects_cmd(const struct git_hash_algo *algop,
+			    const struct write_pack_opts *opts,
+			    struct child_process *cmd,
+			    struct string_list *names);
+
 struct repository;
 struct packed_git;