fsck: refactor how to describe objects

In many places, we refer to objects via their SHA-1s. Let's abstract
that into a function.

For the moment, it does nothing else than what we did previously: print
out the 40-digit hex string. But that will change over the course of the
next patches.

Signed-off-by: Johannes Schindelin <johannes.schindelin@gmx.de>
Signed-off-by: Junio C Hamano <gitster@pobox.com>

diff --git a/builtin/fsck.c b/builtin/fsck.c
index 3f27456883ede5efa2a57cfa9e2dcc889e952338..87df191e49171ef2a47cfc173b8f876905396796 100644 (file)
--- a/builtin/fsck.c
+++ b/builtin/fsck.c
@@ -40,6 +40,11 @@ static int show_dangling = 1;
 #define ERROR_PACK 04
 #define ERROR_REFS 010
 
+static const char *describe_object(struct object *obj)
+{
+       return oid_to_hex(&obj->oid);
+}
+
 static int fsck_config(const char *var, const char *value, void *cb)
 {
        if (strcmp(var, "fsck.skiplist") == 0) {
@@ -67,7 +72,7 @@ static void objreport(struct object *obj, const char *msg_type,
                        const char *err)
 {
        fprintf(stderr, "%s in %s %s: %s\n",
-               msg_type, typename(obj->type), oid_to_hex(&obj->oid), err);
+               msg_type, typename(obj->type), describe_object(obj), err);
 }
 
 static int objerror(struct object *obj, const char *err)
@@ -97,7 +102,7 @@ static int mark_object(struct object *obj, int type, void *data, struct fsck_opt
        if (!obj) {
                /* ... these references to parent->fld are safe here */
                printf("broken link from %7s %s\n",
-                          typename(parent->type), oid_to_hex(&parent->oid));
+                          typename(parent->type), describe_object(parent));
                printf("broken link from %7s %s\n",
                           (type == OBJ_ANY ? "unknown" : typename(type)), "unknown");
                errors_found |= ERROR_REACHABLE;
@@ -114,9 +119,9 @@ static int mark_object(struct object *obj, int type, void *data, struct fsck_opt
        if (!(obj->flags & HAS_OBJ)) {
                if (parent && !has_object_file(&obj->oid)) {
                        printf("broken link from %7s %s\n",
-                                typename(parent->type), oid_to_hex(&parent->oid));
+                                typename(parent->type), describe_object(parent));
                        printf("              to %7s %s\n",
-                                typename(obj->type), oid_to_hex(&obj->oid));
+                                typename(obj->type), describe_object(obj));
                        errors_found |= ERROR_REACHABLE;
                }
                return 1;
@@ -190,7 +195,8 @@ static void check_reachable_object(struct object *obj)
                        return; /* it is in pack - forget about it */
                if (connectivity_only && has_object_file(&obj->oid))
                        return;
-               printf("missing %s %s\n", typename(obj->type), oid_to_hex(&obj->oid));
+               printf("missing %s %s\n", typename(obj->type),
+                       describe_object(obj));
                errors_found |= ERROR_REACHABLE;
                return;
        }
@@ -215,7 +221,8 @@ static void check_unreachable_object(struct object *obj)
         * since this is something that is prunable.
         */
        if (show_unreachable) {
-               printf("unreachable %s %s\n", typename(obj->type), oid_to_hex(&obj->oid));
+               printf("unreachable %s %s\n", typename(obj->type),
+                       describe_object(obj));
                return;
        }
 
@@ -234,11 +241,11 @@ static void check_unreachable_object(struct object *obj)
        if (!obj->used) {
                if (show_dangling)
                        printf("dangling %s %s\n", typename(obj->type),
-                              oid_to_hex(&obj->oid));
+                              describe_object(obj));
                if (write_lost_and_found) {
                        char *filename = git_pathdup("lost-found/%s/%s",
                                obj->type == OBJ_COMMIT ? "commit" : "other",
-                               oid_to_hex(&obj->oid));
+                               describe_object(obj));
                        FILE *f;
 
                        if (safe_create_leading_directories_const(filename)) {
@@ -252,7 +259,7 @@ static void check_unreachable_object(struct object *obj)
                                if (stream_blob_to_fd(fileno(f), obj->oid.hash, NULL, 1))
                                        die_errno("Could not write '%s'", filename);
                        } else
-                               fprintf(f, "%s\n", oid_to_hex(&obj->oid));
+                               fprintf(f, "%s\n", describe_object(obj));
                        if (fclose(f))
                                die_errno("Could not finish '%s'",
                                          filename);
@@ -271,7 +278,7 @@ static void check_unreachable_object(struct object *obj)
 static void check_object(struct object *obj)
 {
        if (verbose)
-               fprintf(stderr, "Checking %s\n", oid_to_hex(&obj->oid));
+               fprintf(stderr, "Checking %s\n", describe_object(obj));
 
        if (obj->flags & REACHABLE)
                check_reachable_object(obj);
@@ -307,7 +314,7 @@ static int fsck_obj(struct object *obj)
 
        if (verbose)
                fprintf(stderr, "Checking %s %s\n",
-                       typename(obj->type), oid_to_hex(&obj->oid));
+                       typename(obj->type), describe_object(obj));
 
        if (fsck_walk(obj, NULL, &fsck_obj_options))
                objerror(obj, "broken links");
@@ -326,15 +333,17 @@ static int fsck_obj(struct object *obj)
                free_commit_buffer(commit);
 
                if (!commit->parents && show_root)
-                       printf("root %s\n", oid_to_hex(&commit->object.oid));
+                       printf("root %s\n", describe_object(&commit->object));
        }
 
        if (obj->type == OBJ_TAG) {
                struct tag *tag = (struct tag *) obj;
 
                if (show_tags && tag->tagged) {
-                       printf("tagged %s %s", typename(tag->tagged->type), oid_to_hex(&tag->tagged->oid));
-                       printf(" (%s) in %s\n", tag->tag, oid_to_hex(&tag->object.oid));
+                       printf("tagged %s %s", typename(tag->tagged->type),
+                               describe_object(tag->tagged));
+                       printf(" (%s) in %s\n", tag->tag,
+                               describe_object(&tag->object));
                }
        }