for_each_loose_file_in_objdir: take an optional strbuf path

We feed a root "objdir" path to this iterator function, which then copies the result into a strbuf, so that it can repeatedly append the object sub-directories to it. Let's make it easy for callers to just pass us a strbuf in the first place. We leave the original interface as a convenience for callers who want to just pass a const string like the result of get_object_directory(). Signed-off-by: Jeff King <peff@peff.net> Signed-off-by: Junio C Hamano <gitster@pobox.com>

Jeff King committed Feb 8, 2015 at 20:13 UTC e6f875e052bb327d43d86b4e8335ebd4746d3e2a
2 files changed +30 -10
cache.h
+9
@@ -1256,6 +1256,10 @@ extern int unpack_object_header(struct packed_git *, struct pack_window **, off_
1256 *
1257 * Any callback that is NULL will be ignored. Callbacks returning non-zero
1258 * will end the iteration.
1259 + *
1260 + * In the "buf" variant, "path" is a strbuf which will also be used as a
1261 + * scratch buffer, but restored to its original contents before
1262 + * the function returns.
1263 */
1264 typedef int each_loose_object_fn(const unsigned char *sha1,
1265 const char *path,
@@ -1271,6 +1275,11 @@ int for_each_loose_file_in_objdir(const char *path,
1275 each_loose_cruft_fn cruft_cb,
1276 each_loose_subdir_fn subdir_cb,
1277 void *data);
1278 +int for_each_loose_file_in_objdir_buf(struct strbuf *path,
1279 + each_loose_object_fn obj_cb,
1280 + each_loose_cruft_fn cruft_cb,
1281 + each_loose_subdir_fn subdir_cb,
1282 + void *data);
1283
1284 /*
1285 * Iterate over loose and packed objects in both the local
sha1_file.c
+21 -10
@@ -3358,31 +3358,42 @@ static int for_each_file_in_obj_subdir(int subdir_nr,
3358 return r;
3359 }
3360
3361 -int for_each_loose_file_in_objdir(const char *path,
3361 +int for_each_loose_file_in_objdir_buf(struct strbuf *path,
3362 each_loose_object_fn obj_cb,
3363 each_loose_cruft_fn cruft_cb,
3364 each_loose_subdir_fn subdir_cb,
3365 void *data)
3366 {
3367 - struct strbuf buf = STRBUF_INIT;
3368 - size_t baselen;
3367 + size_t baselen = path->len;
3368 int r = 0;
3369 int i;
3370
3372 - strbuf_addstr(&buf, path);
3373 - strbuf_addch(&buf, '/');
3374 - baselen = buf.len;
3375 -
3371 for (i = 0; i < 256; i++) {
3377 - strbuf_addf(&buf, "%02x", i);
3378 - r = for_each_file_in_obj_subdir(i, &buf, obj_cb, cruft_cb,
3372 + strbuf_addf(path, "/%02x", i);
3373 + r = for_each_file_in_obj_subdir(i, path, obj_cb, cruft_cb,
3374 subdir_cb, data);
3380 - strbuf_setlen(&buf, baselen);
3375 + strbuf_setlen(path, baselen);
3376 if (r)
3377 break;
3378 }
3379
3380 + return r;
3381 +}
3382 +
3383 +int for_each_loose_file_in_objdir(const char *path,
3384 + each_loose_object_fn obj_cb,
3385 + each_loose_cruft_fn cruft_cb,
3386 + each_loose_subdir_fn subdir_cb,
3387 + void *data)
3388 +{
3389 + struct strbuf buf = STRBUF_INIT;
3390 + int r;
3391 +
3392 + strbuf_addstr(&buf, path);
3393 + r = for_each_loose_file_in_objdir_buf(&buf, obj_cb, cruft_cb,
3394 + subdir_cb, data);
3395 strbuf_release(&buf);
3396 +
3397 return r;
3398 }
3399