fsck: use for_each_loose_file_in_objdir

Since 27e1e22 (prune: factor out loose-object directory
traversal, 2014-10-15), we now have a generic callback
system for iterating over the loose object directories. This
is used by prune, count-objects, etc.

We did not convert git-fsck at the time because it
implemented an inode-sorting scheme that was not part of the
generic code. Now that the inode-sorting code is gone, we
can reuse the generic code.  The result is shorter,
hopefully more readable, and drops some unchecked sprintf
calls.

Signed-off-by: Jeff King <peff@peff.net>
Signed-off-by: Junio C Hamano <gitster@pobox.com>

diff --git a/builtin/fsck.c b/builtin/fsck.c
index 73c35963b831e857e6a4206e40acbac766d77fbc..d50efd5e8c158f945a4d0c02d3086927a3ab617b 100644 (file)
--- a/builtin/fsck.c
+++ b/builtin/fsck.c
@@ -365,45 +365,6 @@ static int fsck_obj_buffer(const unsigned char *sha1, enum object_type type,
        return fsck_obj(obj);
 }
 
-static inline int is_loose_object_file(struct dirent *de,
-                                      char *name, unsigned char *sha1)
-{
-       if (strlen(de->d_name) != 38)
-               return 0;
-       memcpy(name + 2, de->d_name, 39);
-       return !get_sha1_hex(name, sha1);
-}
-
-static void fsck_dir(int i, char *path)
-{
-       DIR *dir = opendir(path);
-       struct dirent *de;
-       char name[100];
-
-       if (!dir)
-               return;
-
-       if (verbose)
-               fprintf(stderr, "Checking directory %s\n", path);
-
-       sprintf(name, "%02x", i);
-       while ((de = readdir(dir)) != NULL) {
-               unsigned char sha1[20];
-
-               if (is_dot_or_dotdot(de->d_name))
-                       continue;
-               if (is_loose_object_file(de, name, sha1)) {
-                       if (fsck_sha1(sha1))
-                               errors_found |= ERROR_OBJECT;
-                       continue;
-               }
-               if (starts_with(de->d_name, "tmp_obj_"))
-                       continue;
-               fprintf(stderr, "bad sha1 file: %s/%s\n", path, de->d_name);
-       }
-       closedir(dir);
-}
-
 static int default_refs;
 
 static void fsck_handle_reflog_sha1(const char *refname, unsigned char *sha1)
@@ -491,9 +452,28 @@ static void get_default_heads(void)
        }
 }
 
+static int fsck_loose(const unsigned char *sha1, const char *path, void *data)
+{
+       if (fsck_sha1(sha1))
+               errors_found |= ERROR_OBJECT;
+       return 0;
+}
+
+static int fsck_cruft(const char *basename, const char *path, void *data)
+{
+       if (!starts_with(basename, "tmp_obj_"))
+               fprintf(stderr, "bad sha1 file: %s\n", path);
+       return 0;
+}
+
+static int fsck_subdir(int nr, const char *path, void *progress)
+{
+       display_progress(progress, nr + 1);
+       return 0;
+}
+
 static void fsck_object_dir(const char *path)
 {
-       int i;
        struct progress *progress = NULL;
 
        if (verbose)
@@ -501,12 +481,10 @@ static void fsck_object_dir(const char *path)
 
        if (show_progress)
                progress = start_progress(_("Checking object directories"), 256);
-       for (i = 0; i < 256; i++) {
-               static char dir[4096];
-               sprintf(dir, "%s/%02x", path, i);
-               fsck_dir(i, dir);
-               display_progress(progress, i+1);
-       }
+
+       for_each_loose_file_in_objdir(path, fsck_loose, fsck_cruft, fsck_subdir,
+                                     progress);
+       display_progress(progress, 256);
        stop_progress(&progress);
 }