diff: activate diff.renames by default

diff --git a/name-hash.c b/name-hash.c
index 702cd0518fca67a84417de8268ed70dfa29392e4..332ba956e7edec6c6fbe10f346ec08fc469b846f 100644 (file)
--- a/name-hash.c
+++ b/name-hash.c
@@ -11,16 +11,16 @@
 struct dir_entry {
        struct hashmap_entry ent;
        struct dir_entry *parent;
-       struct cache_entry *ce;
        int nr;
        unsigned int namelen;
+       char name[FLEX_ARRAY];
 };
 
 static int dir_entry_cmp(const struct dir_entry *e1,
                const struct dir_entry *e2, const char *name)
 {
-       return e1->namelen != e2->namelen || strncasecmp(e1->ce->name,
-                       name ? name : e2->ce->name, e1->namelen);
+       return e1->namelen != e2->namelen || strncasecmp(e1->name,
+                       name ? name : e2->name, e1->namelen);
 }
 
 static struct dir_entry *find_dir_entry(struct index_state *istate,
@@ -41,14 +41,6 @@ static struct dir_entry *hash_dir_entry(struct index_state *istate,
         * closing slash.  Despite submodules being a directory, they never
         * reach this point, because they are stored
         * in index_state.name_hash (as ordinary cache_entries).
-        *
-        * Note that the cache_entry stored with the dir_entry merely
-        * supplies the name of the directory (up to dir_entry.namelen). We
-        * track the number of 'active' files in a directory in dir_entry.nr,
-        * so we can tell if the directory is still relevant, e.g. for git
-        * status. However, if cache_entries are removed, we cannot pinpoint
-        * an exact cache_entry that's still active. It is very possible that
-        * multiple dir_entries point to the same cache_entry.
         */
        struct dir_entry *dir;
 
@@ -63,10 +55,10 @@ static struct dir_entry *hash_dir_entry(struct index_state *istate,
        dir = find_dir_entry(istate, ce->name, namelen);
        if (!dir) {
                /* not found, create it and add to hash table */
-               dir = xcalloc(1, sizeof(struct dir_entry));
+               dir = xcalloc(1, sizeof(struct dir_entry) + namelen + 1);
                hashmap_entry_init(dir, memihash(ce->name, namelen));
                dir->namelen = namelen;
-               dir->ce = ce;
+               strncpy(dir->name, ce->name, namelen);
                hashmap_add(&istate->dir_hash, dir);
 
                /* recursively add missing parent directories */
@@ -188,26 +180,36 @@ static int same_name(const struct cache_entry *ce, const char *name, int namelen
        return slow_same_name(name, namelen, ce->name, len);
 }
 
-struct cache_entry *index_dir_exists(struct index_state *istate, const char *name, int namelen)
+int index_dir_exists(struct index_state *istate, const char *name, int namelen)
 {
-       struct cache_entry *ce;
        struct dir_entry *dir;
 
        lazy_init_name_hash(istate);
        dir = find_dir_entry(istate, name, namelen);
-       if (dir && dir->nr)
-               return dir->ce;
+       return dir && dir->nr;
+}
 
-       /*
-        * It might be a submodule. Unlike plain directories, which are stored
-        * in the dir-hash, submodules are stored in the name-hash, so check
-        * there, as well.
-        */
-       ce = index_file_exists(istate, name, namelen, 1);
-       if (ce && S_ISGITLINK(ce->ce_mode))
-               return ce;
+void adjust_dirname_case(struct index_state *istate, char *name)
+{
+       const char *startPtr = name;
+       const char *ptr = startPtr;
 
-       return NULL;
+       lazy_init_name_hash(istate);
+       while (*ptr) {
+               while (*ptr && *ptr != '/')
+                       ptr++;
+
+               if (*ptr == '/') {
+                       struct dir_entry *dir;
+
+                       ptr++;
+                       dir = find_dir_entry(istate, name, ptr - name + 1);
+                       if (dir) {
+                               memcpy((void *)startPtr, dir->name + (startPtr - name), ptr - startPtr);
+                               startPtr = ptr;
+                       }
+               }
+       }
 }
 
 struct cache_entry *index_file_exists(struct index_state *istate, const char *name, int namelen, int icase)