From: Michael Vrable <mvrable@cs.ucsd.edu>
Date: Fri, 30 Oct 2009 22:48:14 +0000 (-0700)
Subject: Start work on a rename operation.  Not yet complete.
X-Git-Url: https://git.vrable.net/?a=commitdiff_plain;h=45f3ec339de4b7efa9ef5978b79148c25e0c49b2;p=bluesky.git

Start work on a rename operation.  Not yet complete.
---

diff --git a/bluesky/dir.c b/bluesky/dir.c
index cb3b23f..724320a 100644
--- a/bluesky/dir.c
+++ b/bluesky/dir.c
@@ -121,8 +121,8 @@ gboolean bluesky_directory_insert(BlueSkyInode *dir,
     return TRUE;
 }
 
-/* Remove an from a directory.  Should be called with the inode lock already
- * held. */
+/* Remove an entry from a directory.  Should be called with the inode lock
+ * already held. */
 gboolean bluesky_directory_remove(BlueSkyInode *dir, gchar *name)
 {
     g_return_val_if_fail(dir->type == BLUESKY_DIRECTORY, FALSE);
@@ -150,6 +150,40 @@ gboolean bluesky_directory_remove(BlueSkyInode *dir, gchar *name)
     return TRUE;
 }
 
+/* Rename a file.  If desired (if overwrite is true) and if the target already
+ * exists, it will be unlinked first. */
+gboolean bluesky_rename(BlueSkyInode *dir1, gchar *name1,
+                        BlueSkyInode *dir2, gchar *name2,
+                        gboolean case_sensitive,
+                        gboolean overwrite)
+{
+    g_return_val_if_fail(dir1->type == BLUESKY_DIRECTORY, FALSE);
+    g_return_val_if_fail(dir2->type == BLUESKY_DIRECTORY, FALSE);
+
+    BlueSkyDirent *d1, *d2;
+
+    d1 = g_hash_table_lookup(case_sensitive ? dir1->dirhash
+                                            : dir1->dirhash_folded, name1);
+    d2 = g_hash_table_lookup(case_sensitive ? dir2->dirhash
+                                            : dir2->dirhash_folded, name2);
+
+    if (d1 == NULL)
+        return FALSE;
+
+    /* Check that this rename does not cause a directory to be moved into one
+     * of its descendants, as that would create a loop of directories
+     * disconnected from the root. */
+    /* TODO */
+
+    if (d2 != NULL) {
+        if (!overwrite)
+            return FALSE;
+
+        bluesky_directory_remove(dir2, name2);
+    }
+
+}
+
 /* Dump the contents of a directory to stdout.  Debugging only. */
 void bluesky_directory_dump(BlueSkyInode *dir)
 {