diff options
| -rw-r--r-- | attr.c | 57 | ||||
| -rwxr-xr-x | t/t1092-sparse-checkout-compatibility.sh | 10 |
2 files changed, 48 insertions, 19 deletions
@@ -808,35 +808,56 @@ static struct attr_stack *read_attr_from_blob(struct index_state *istate, static struct attr_stack *read_attr_from_index(struct index_state *istate, const char *path, unsigned flags) { + struct attr_stack *stack = NULL; char *buf; unsigned long size; + int sparse_dir_pos = -1; if (!istate) return NULL; /* - * The .gitattributes file only applies to files within its - * parent directory. In the case of cone-mode sparse-checkout, - * the .gitattributes file is sparse if and only if all paths - * within that directory are also sparse. Thus, don't load the - * .gitattributes file since it will not matter. - * - * In the case of a sparse index, it is critical that we don't go - * looking for a .gitattributes file, as doing so would cause the - * index to expand. + * When handling sparse-checkouts, .gitattributes files + * may reside within a sparse directory. We distinguish + * whether a path exists directly in the index or not by + * evaluating if 'pos' is negative. + * If 'pos' is negative, the path is not directly present + * in the index and is likely within a sparse directory. + * For paths not in the index, The absolute value of 'pos' + * minus 1 gives us the position where the path would be + * inserted in lexicographic order within the index. + * We then subtract another 1 from this value + * (sparse_dir_pos = -pos - 2) to find the position of the + * last index entry which is lexicographically smaller than + * the path. This would be the sparse directory containing + * the path. By identifying the sparse directory containing + * the path, we can correctly read the attributes specified + * in the .gitattributes file from the tree object of the + * sparse directory. */ - if (!path_in_cone_mode_sparse_checkout(path, istate)) - return NULL; + if (!path_in_cone_mode_sparse_checkout(path, istate)) { + int pos = index_name_pos_sparse(istate, path, strlen(path)); - buf = read_blob_data_from_index(istate, path, &size); - if (!buf) - return NULL; - if (size >= ATTR_MAX_FILE_SIZE) { - warning(_("ignoring overly large gitattributes blob '%s'"), path); - return NULL; + if (pos < 0) + sparse_dir_pos = -pos - 2; } - return read_attr_from_buf(buf, path, flags); + if (sparse_dir_pos >= 0 && + S_ISSPARSEDIR(istate->cache[sparse_dir_pos]->ce_mode) && + !strncmp(istate->cache[sparse_dir_pos]->name, path, ce_namelen(istate->cache[sparse_dir_pos]))) { + const char *relative_path = path + ce_namelen(istate->cache[sparse_dir_pos]); + stack = read_attr_from_blob(istate, &istate->cache[sparse_dir_pos]->oid, relative_path, flags); + } else { + buf = read_blob_data_from_index(istate, path, &size); + if (!buf) + return NULL; + if (size >= ATTR_MAX_FILE_SIZE) { + warning(_("ignoring overly large gitattributes blob '%s'"), path); + return NULL; + } + stack = read_attr_from_buf(buf, path, flags); + } + return stack; } static struct attr_stack *read_attr(struct index_state *istate, diff --git a/t/t1092-sparse-checkout-compatibility.sh b/t/t1092-sparse-checkout-compatibility.sh index 2d7fa65d81..dc84b3e2e1 100755 --- a/t/t1092-sparse-checkout-compatibility.sh +++ b/t/t1092-sparse-checkout-compatibility.sh @@ -2271,7 +2271,7 @@ test_expect_success 'check-attr with pathspec inside sparse definition' ' test_all_match git check-attr -a --cached -- deep/a ' -test_expect_failure 'check-attr with pathspec outside sparse definition' ' +test_expect_success 'check-attr with pathspec outside sparse definition' ' init_repos && echo "a -crlf myAttr" >>.gitattributes && @@ -2288,6 +2288,14 @@ test_expect_failure 'check-attr with pathspec outside sparse definition' ' test_all_match git check-attr -a --cached -- folder1/a ' +# NEEDSWORK: The 'diff --check' test is left as 'test_expect_failure' due +# to an underlying issue in oneway_diff() within diff-lib.c. +# 'do_oneway_diff()' is not called as expected for paths that could match +# inside of a sparse directory. Specifically, the 'ce_path_match()' function +# fails to recognize files inside a sparse directory (e.g., when 'folder1/' +# is a sparse directory, 'folder1/a' cannot be recognized). The goal is to +# proceed with 'do_oneway_diff()' if the pathspec could match inside of a +# sparse directory. test_expect_failure 'diff --check with pathspec outside sparse definition' ' init_repos && |