[gvfs/wip/rishi/goa: 6/8] Better escaping / lookaside cache

[Debarshi Ray <debarshir src gnome org>]

commit c5349e2d4483b09b6bb787f93d5da7621de119b3
Author: Debarshi Ray <debarshir gnome org>
Date:   Tue Aug 25 21:16:22 2015 +0200

    Better escaping / lookaside cache

 daemon/gvfsbackendgoogle.c |   68 ++++++++++++++++++++++++++++++++++++++++++++
 1 files changed, 68 insertions(+), 0 deletions(-)
---
diff --git a/daemon/gvfsbackendgoogle.c b/daemon/gvfsbackendgoogle.c
index 2604f6f..a5ca53e 100644
--- a/daemon/gvfsbackendgoogle.c
+++ b/daemon/gvfsbackendgoogle.c
@@ -86,6 +86,72 @@ G_DEFINE_TYPE(GVfsBackendGoogle, g_vfs_backend_google, G_VFS_TYPE_BACKEND)
 
 /* ---------------------------------------------------------------------------------------------------- */
 
+static void
+insert_lookaside (GVfsBackendGoogle *self,
+                  const gchar       *parent_id,
+                  const gchar       *basename,
+                  const gchar       *id)
+{
+  gchar *key;
+
+  key = g_build_filename (parent_id, basename, NULL);
+  g_hash_table_insert (self->lookaside, g_strdup (key), g_strdup (id));
+  g_free (key);
+}
+
+static const gchar *
+lookup_lookaside (GVfsBackendGoogle *self,
+                  const gchar       *parent_id,
+                  const gchar       *basename)
+{
+  const gchar *id;
+  gchar *key;
+
+  key = g_build_filename (parent_id, basename, NULL);
+  id = g_hash_table_lookup (self->lookaside, key);
+  g_free (key);
+  return id;
+}
+
+static gchar *
+resolve_filename (GVfsBackendGoogle *self,
+                  const gchar       *filename)
+{
+  const gchar *id;
+  gchar *basename = NULL;
+  gchar *parent_id = NULL;
+  gchar *parent_path = NULL;
+  gchar *resolved_parent_path = NULL;
+  gchar *ret_val = NULL;
+
+  if (g_strcmp0 (filename, "/") == 0)
+    {
+      ret_val = g_strdup ("/");
+      goto out;
+    }
+
+  parent_path = g_path_get_dirname (filename);
+  resolved_parent_path = resolve_filename (self, parent_path);
+  if (resolved_parent_path == NULL)
+    goto out;
+
+  parent_id = g_path_get_basename (resolved_parent_path);
+  basename = g_path_get_basename (filename);
+  id = lookup_lookaside (self, parent_id, basename);
+  if (id == NULL)
+    goto out;
+
+  ret_val = g_build_filename (resolved_parent_path, id, NULL);
+
+ out:
+  g_free (parent_id);
+  g_free (parent_path);
+  g_free (resolved_parent_path);
+  return ret_val;
+}
+
+/* ---------------------------------------------------------------------------------------------------- */
+
 static gchar *
 escape_id (const gchar *id)
 {
@@ -779,6 +845,7 @@ create_document (GVfsBackendGoogle  *self,
   if (is_root)
     {
       parent = GDATA_DOCUMENTS_FOLDER (self->root);
+      //parent_id = g_strdup (gdata_entry_get_id (GDATA_ENTRY (parent)));
     }
   else
     {
@@ -822,6 +889,7 @@ create_document (GVfsBackendGoogle  *self,
     {
       g_debug ("  insert lookaside: %s -> %s\n", filename, path);
       g_hash_table_insert (self->lookaside, g_strdup (filename), g_strdup (path));
+      //insert_lookaside (self, parent_id, title, id);
       g_hash_table_foreach (self->monitors, emit_create_event, (gpointer) path);
     }