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authorJoshua Jensen <jjensen@workspacewhiz.com>2010-10-03 09:56:43 +0000
committerJunio C Hamano <gitster@pobox.com>2010-10-06 11:19:58 -0700
commit5102c6173c5a1c683dfdd8ccd07528adddd51745 (patch)
treec36145dd9e065bb9d2011566088044f1d50ff2ae /dir.c
parent10d4b02b9962170e15d1d65b03581ef8bef66e2e (diff)
downloadgit-5102c6173c5a1c683dfdd8ccd07528adddd51745.tar.gz
Add case insensitivity support for directories when using git status
When using a case preserving but case insensitive file system, directory case can differ but still refer to the same physical directory. git status reports the directory with the alternate case as an Untracked file. (That is, when mydir/filea.txt is added to the repository and then the directory on disk is renamed from mydir/ to MyDir/, git status shows MyDir/ as being untracked.) Support has been added in name-hash.c for hashing directories with a terminating slash into the name hash. When index_name_exists() is called with a directory (a name with a terminating slash), the name is not found via the normal cache_name_compare() call, but it is found in the slow_same_name() function. Additionally, in dir.c, directory_exists_in_index_icase() allows newly added directories deeper in the directory chain to be identified. Ultimately, it would be better if the file list was read in case insensitive alphabetical order from disk, but this change seems to suffice for now. The end result is the directory is looked up in a case insensitive manner and does not show in the Untracked files list. Signed-off-by: Joshua Jensen <jjensen@workspacewhiz.com> Signed-off-by: Johannes Sixt <j6t@kdbg.org> Signed-off-by: Junio C Hamano <gitster@pobox.com>
Diffstat (limited to 'dir.c')
-rw-r--r--dir.c40
1 files changed, 39 insertions, 1 deletions
diff --git a/dir.c b/dir.c
index be21c201ab..ee80204421 100644
--- a/dir.c
+++ b/dir.c
@@ -485,6 +485,39 @@ enum exist_status {
};
/*
+ * Do not use the alphabetically stored index to look up
+ * the directory name; instead, use the case insensitive
+ * name hash.
+ */
+static enum exist_status directory_exists_in_index_icase(const char *dirname, int len)
+{
+ struct cache_entry *ce = index_name_exists(&the_index, dirname, len + 1, ignore_case);
+ unsigned char endchar;
+
+ if (!ce)
+ return index_nonexistent;
+ endchar = ce->name[len];
+
+ /*
+ * The cache_entry structure returned will contain this dirname
+ * and possibly additional path components.
+ */
+ if (endchar == '/')
+ return index_directory;
+
+ /*
+ * If there are no additional path components, then this cache_entry
+ * represents a submodule. Submodules, despite being directories,
+ * are stored in the cache without a closing slash.
+ */
+ if (!endchar && S_ISGITLINK(ce->ce_mode))
+ return index_gitdir;
+
+ /* This should never be hit, but it exists just in case. */
+ return index_nonexistent;
+}
+
+/*
* The index sorts alphabetically by entry name, which
* means that a gitlink sorts as '\0' at the end, while
* a directory (which is defined not as an entry, but as
@@ -493,7 +526,12 @@ enum exist_status {
*/
static enum exist_status directory_exists_in_index(const char *dirname, int len)
{
- int pos = cache_name_pos(dirname, len);
+ int pos;
+
+ if (ignore_case)
+ return directory_exists_in_index_icase(dirname, len);
+
+ pos = cache_name_pos(dirname, len);
if (pos < 0)
pos = -pos-1;
while (pos < active_nr) {