[gtk: 3/5] GtkIconCache: Remove unused code

[Matthias Clasen <matthiasc src gnome org>]

commit 308d434b579f95204a215615f00a802c9c7d9dba
Author: Alexander Larsson <alexl redhat com>
Date:   Mon Feb 3 11:01:48 2020 +0100

    GtkIconCache: Remove unused code
    
    We're not really using the icon theme cache much anymore, as the
    individual per-directory hashes are no longer used, so delete all the
    unused code.

 gtk/gtkiconcache.c        | 357 ++--------------------------------------------
 gtk/gtkiconcacheprivate.h |  20 ---
 2 files changed, 10 insertions(+), 367 deletions(-)
---
diff --git a/gtk/gtkiconcache.c b/gtk/gtkiconcache.c
index bc238e0028..8e4b86d6eb 100644
--- a/gtk/gtkiconcache.c
+++ b/gtk/gtkiconcache.c
@@ -82,7 +82,7 @@ gtk_icon_cache_unref (GtkIconCache *cache)
       GTK_NOTE (ICONTHEME, g_message ("unmapping icon cache"));
 
       if (cache->map)
-       g_mapped_file_unref (cache->map);
+        g_mapped_file_unref (cache->map);
       g_free (cache);
     }
 }
@@ -119,7 +119,7 @@ gtk_icon_cache_new_for_path (const gchar *path)
 /*             (will need to check on the Windows DDK part later) */
 #if ((defined (_MSC_VER) && (_MSC_VER >= 1400 || __MSVCRT_VERSION__ >= 0x0800)) || defined 
(__MINGW64_VERSION_MAJOR)) && !defined(_WIN64)
 #undef fstat /* Just in case */
-#define fstat _fstat32  
+#define fstat _fstat32
 #endif
 #endif
 
@@ -130,7 +130,7 @@ gtk_icon_cache_new_for_path (const gchar *path)
   if (st.st_mtime < path_st.st_mtime)
     {
       GTK_NOTE (ICONTHEME, g_message ("icon cache outdated"));
-      goto done; 
+      goto done;
     }
 
   map = g_mapped_file_new (cache_filename, FALSE, NULL);
@@ -156,7 +156,7 @@ gtk_icon_cache_new_for_path (const gchar *path)
           goto done;
         }
     }
-#endif 
+#endif
 
   GTK_NOTE (ICONTHEME, g_message ("found icon cache for %s", path));
 
@@ -166,7 +166,7 @@ gtk_icon_cache_new_for_path (const gchar *path)
   cache->buffer = g_mapped_file_get_contents (map);
 
  done:
-  g_free (cache_filename);  
+  g_free (cache_filename);
   if (fd >= 0)
     close (fd);
 
@@ -182,18 +182,18 @@ gtk_icon_cache_new (const gchar *data)
   cache->ref_count = 1;
   cache->map = NULL;
   cache->buffer = (gchar *)data;
-  
+
   return cache;
 }
 
 static gint
 get_directory_index (GtkIconCache *cache,
-                    const gchar *directory)
+                     const gchar *directory)
 {
   guint32 dir_list_offset;
   gint n_dirs;
   gint i;
-  
+
   dir_list_offset = GET_UINT32 (cache->buffer, 8);
 
   n_dirs = GET_UINT32 (cache->buffer, dir_list_offset);
@@ -203,147 +203,10 @@ get_directory_index (GtkIconCache *cache,
       guint32 name_offset = GET_UINT32 (cache->buffer, dir_list_offset + 4 + 4 * i);
       gchar *name = cache->buffer + name_offset;
       if (strcmp (name, directory) == 0)
-       return i;
-    }
-  
-  return -1;
-}
-
-gint
-gtk_icon_cache_get_directory_index (GtkIconCache *cache,
-                                    const gchar *directory)
-{
-  return get_directory_index (cache, directory);
-}
-
-static guint
-icon_name_hash (gconstpointer key)
-{
-  const signed char *p = key;
-  guint32 h = *p;
-
-  if (h)
-    for (p += 1; *p != '\0'; p++)
-      h = (h << 5) - h + *p;
-
-  return h;
-}
-
-static gint
-find_image_offset (GtkIconCache *cache,
-                  const gchar  *icon_name,
-                  gint          directory_index)
-{
-  guint32 hash_offset;
-  guint32 n_buckets;
-  guint32 chain_offset;
-  int hash;
-  guint32 image_list_offset, n_images;
-  int i;
-
-  if (!icon_name)
-    return 0;
-
-  chain_offset = cache->last_chain_offset;
-  if (chain_offset)
-    {
-      guint32 name_offset = GET_UINT32 (cache->buffer, chain_offset + 4);
-      gchar *name = cache->buffer + name_offset;
-
-      if (strcmp (name, icon_name) == 0)
-        goto find_dir;
-    }
-
-  hash_offset = GET_UINT32 (cache->buffer, 4);
-  n_buckets = GET_UINT32 (cache->buffer, hash_offset);
-  hash = icon_name_hash (icon_name) % n_buckets;
-
-  chain_offset = GET_UINT32 (cache->buffer, hash_offset + 4 + 4 * hash);
-  while (chain_offset != 0xffffffff)
-    {
-      guint32 name_offset = GET_UINT32 (cache->buffer, chain_offset + 4);
-      gchar *name = cache->buffer + name_offset;
-
-      if (strcmp (name, icon_name) == 0)
-        {
-          cache->last_chain_offset = chain_offset;
-          goto find_dir;
-       }
-  
-      chain_offset = GET_UINT32 (cache->buffer, chain_offset);
+        return i;
     }
 
-  cache->last_chain_offset = 0;
-  return 0;
-
-find_dir:
-  /* We've found an icon list, now check if we have the right icon in it */
-  image_list_offset = GET_UINT32 (cache->buffer, chain_offset + 8);
-  n_images = GET_UINT32 (cache->buffer, image_list_offset);
-  
-  for (i = 0; i < n_images; i++)
-    {
-      if (GET_UINT16 (cache->buffer, image_list_offset + 4 + 8 * i) ==
-         directory_index) 
-       return image_list_offset + 4 + 8 * i;
-    }
-
-  return 0;
-}
-
-gint
-gtk_icon_cache_get_icon_flags (GtkIconCache *cache,
-                               const gchar  *icon_name,
-                               gint          directory_index)
-{
-  guint32 image_offset;
-
-  image_offset = find_image_offset (cache, icon_name, directory_index);
-
-  if (!image_offset)
-    return 0;
-
-  return GET_UINT16 (cache->buffer, image_offset + 2);
-}
-
-gboolean
-gtk_icon_cache_has_icons (GtkIconCache *cache,
-                          const gchar  *directory)
-{
-  int directory_index;
-  guint32 hash_offset, n_buckets;
-  guint32 chain_offset;
-  guint32 image_list_offset, n_images;
-  int i, j;
-
-  directory_index = get_directory_index (cache, directory);
-
-  if (directory_index == -1)
-    return FALSE;
-
-  hash_offset = GET_UINT32 (cache->buffer, 4);
-  n_buckets = GET_UINT32 (cache->buffer, hash_offset);
-
-  for (i = 0; i < n_buckets; i++)
-    {
-      chain_offset = GET_UINT32 (cache->buffer, hash_offset + 4 + 4 * i);
-      while (chain_offset != 0xffffffff)
-       {
-         image_list_offset = GET_UINT32 (cache->buffer, chain_offset + 8);
-         n_images = GET_UINT32 (cache->buffer, image_list_offset);
-
-         for (j = 0; j < n_images; j++)
-           {
-             if (GET_UINT16 (cache->buffer, image_list_offset + 4 + 8 * j) ==
-                 directory_index)
-               return TRUE;
-           }
-
-         chain_offset = GET_UINT32 (cache->buffer, chain_offset);
-       }
-    }
-
-  return FALSE;
+  return -1;
 }
 
 GHashTable *
@@ -417,203 +280,3 @@ gtk_icon_cache_list_icons_in_directory (GtkIconCache *cache,
 
   return icons;
 }
-
-void
-gtk_icon_cache_add_icons (GtkIconCache *cache,
-                          const gchar  *directory,
-                          GHashTable   *hash_table)
-{
-  int directory_index;
-  guint32 hash_offset, n_buckets;
-  guint32 chain_offset;
-  guint32 image_list_offset, n_images;
-  int i, j;
-  
-  directory_index = get_directory_index (cache, directory);
-
-  if (directory_index == -1)
-    return;
-  
-  hash_offset = GET_UINT32 (cache->buffer, 4);
-  n_buckets = GET_UINT32 (cache->buffer, hash_offset);
-
-  for (i = 0; i < n_buckets; i++)
-    {
-      chain_offset = GET_UINT32 (cache->buffer, hash_offset + 4 + 4 * i);
-      while (chain_offset != 0xffffffff)
-       {
-         guint32 name_offset = GET_UINT32 (cache->buffer, chain_offset + 4);
-         gchar *name = cache->buffer + name_offset;
-         
-         image_list_offset = GET_UINT32 (cache->buffer, chain_offset + 8);
-         n_images = GET_UINT32 (cache->buffer, image_list_offset);
-  
-         for (j = 0; j < n_images; j++)
-           {
-             if (GET_UINT16 (cache->buffer, image_list_offset + 4 + 8 * j) ==
-                 directory_index)
-               g_hash_table_insert (hash_table, name, NULL);
-           }
-
-         chain_offset = GET_UINT32 (cache->buffer, chain_offset);
-       }
-    }  
-}
-
-gboolean
-gtk_icon_cache_has_icon (GtkIconCache *cache,
-                         const gchar  *icon_name)
-{
-  guint32 hash_offset;
-  guint32 n_buckets;
-  guint32 chain_offset;
-  gint hash;
-  
-  hash_offset = GET_UINT32 (cache->buffer, 4);
-  n_buckets = GET_UINT32 (cache->buffer, hash_offset);
-
-  hash = icon_name_hash (icon_name) % n_buckets;
-
-  chain_offset = GET_UINT32 (cache->buffer, hash_offset + 4 + 4 * hash);
-  while (chain_offset != 0xffffffff)
-    {
-      guint32 name_offset = GET_UINT32 (cache->buffer, chain_offset + 4);
-      gchar *name = cache->buffer + name_offset;
-
-      if (strcmp (name, icon_name) == 0)
-       return TRUE;
-         
-      chain_offset = GET_UINT32 (cache->buffer, chain_offset);
-    }
-
-  return FALSE;
-}
-
-gboolean
-gtk_icon_cache_has_icon_in_directory (GtkIconCache *cache,
-                                      const gchar  *icon_name,
-                                      const gchar  *directory)
-{
-  guint32 hash_offset;
-  guint32 n_buckets;
-  guint32 chain_offset;
-  gint hash;
-  gboolean found_icon = FALSE;
-  gint directory_index;
-
-  directory_index = get_directory_index (cache, directory);
-
-  if (directory_index == -1)
-    return FALSE;
-  
-  hash_offset = GET_UINT32 (cache->buffer, 4);
-  n_buckets = GET_UINT32 (cache->buffer, hash_offset);
-
-  hash = icon_name_hash (icon_name) % n_buckets;
-
-  chain_offset = GET_UINT32 (cache->buffer, hash_offset + 4 + 4 * hash);
-  while (chain_offset != 0xffffffff)
-    {
-      guint32 name_offset = GET_UINT32 (cache->buffer, chain_offset + 4);
-      gchar *name = cache->buffer + name_offset;
-
-      if (strcmp (name, icon_name) == 0)
-       {
-         found_icon = TRUE;
-         break;
-       }
-         
-      chain_offset = GET_UINT32 (cache->buffer, chain_offset);
-    }
-
-  if (found_icon)
-    {
-      guint32 image_list_offset = GET_UINT32 (cache->buffer, chain_offset + 8);
-      guint32 n_images =  GET_UINT32 (cache->buffer, image_list_offset);
-      guint32 image_offset = image_list_offset + 4;
-      gint i;
-      for (i = 0; i < n_images; i++)
-       {
-         guint16 index = GET_UINT16 (cache->buffer, image_offset);
-         
-         if (index == directory_index)
-           return TRUE;
-         image_offset += 8;
-       }
-    }
-
-  return FALSE;
-}
-
-static void
-pixbuf_destroy_cb (guchar   *pixels, 
-                  gpointer  data)
-{
-  GtkIconCache *cache = data;
-
-  gtk_icon_cache_unref (cache);
-}
-
-GdkPixbuf *
-gtk_icon_cache_get_icon (GtkIconCache *cache,
-                         const gchar  *icon_name,
-                         gint          directory_index)
-{
-  guint32 offset, image_data_offset, pixel_data_offset;
-  guint32 length, type;
-  GdkPixbuf *pixbuf;
-  GdkPixdata pixdata;
-  GError *error = NULL;
-
-  offset = find_image_offset (cache, icon_name, directory_index);
-  
-  if (!offset)
-    return NULL;
-
-  image_data_offset = GET_UINT32 (cache->buffer, offset + 4);
-  
-  if (!image_data_offset)
-    return NULL;
-
-  pixel_data_offset = GET_UINT32 (cache->buffer, image_data_offset);
-
-  type = GET_UINT32 (cache->buffer, pixel_data_offset);
-
-  if (type != 0)
-    {
-      GTK_NOTE (ICONTHEME, g_message ("invalid pixel data type %u", type));
-      return NULL;
-    }
-
-  length = GET_UINT32 (cache->buffer, pixel_data_offset + 4);
-  
-G_GNUC_BEGIN_IGNORE_DEPRECATIONS
-  if (!gdk_pixdata_deserialize (&pixdata, length, 
-                               (guchar *)(cache->buffer + pixel_data_offset + 8),
-                               &error))
-    {
-      GTK_NOTE (ICONTHEME, g_message ("could not deserialize data: %s", error->message));
-      g_error_free (error);
-
-      return NULL;
-    }
-G_GNUC_END_IGNORE_DEPRECATIONS
-
-  pixbuf = gdk_pixbuf_new_from_data (pixdata.pixel_data, GDK_COLORSPACE_RGB,
-                                    (pixdata.pixdata_type & GDK_PIXDATA_COLOR_TYPE_MASK) == 
GDK_PIXDATA_COLOR_TYPE_RGBA,
-                                    8, pixdata.width, pixdata.height, pixdata.rowstride,
-                                    (GdkPixbufDestroyNotify)pixbuf_destroy_cb, 
-                                    cache);
-  if (!pixbuf)
-    {
-      GTK_NOTE (ICONTHEME, g_message ("could not convert pixdata to pixbuf: %s", error->message));
-      g_error_free (error);
-
-      return NULL;
-    }
-
-  gtk_icon_cache_ref (cache);
-
-  return pixbuf;
-}
-
diff --git a/gtk/gtkiconcacheprivate.h b/gtk/gtkiconcacheprivate.h
index 2f73891e6b..4925e9c870 100644
--- a/gtk/gtkiconcacheprivate.h
+++ b/gtk/gtkiconcacheprivate.h
@@ -25,28 +25,8 @@ typedef struct _GtkIconCache GtkIconCache;
 
 GtkIconCache *gtk_icon_cache_new                        (const gchar  *data);
 GtkIconCache *gtk_icon_cache_new_for_path               (const gchar  *path);
-gint          gtk_icon_cache_get_directory_index        (GtkIconCache *cache,
-                                                         const gchar  *directory);
-gboolean      gtk_icon_cache_has_icon                   (GtkIconCache *cache,
-                                                         const gchar  *icon_name);
-gboolean      gtk_icon_cache_has_icon_in_directory      (GtkIconCache *cache,
-                                                         const gchar  *icon_name,
-                                                         const gchar  *directory);
 GHashTable   *gtk_icon_cache_list_icons_in_directory    (GtkIconCache *cache,
                                                          const gchar  *directory);
-gboolean      gtk_icon_cache_has_icons                  (GtkIconCache *cache,
-                                                         const gchar  *directory);
-void         gtk_icon_cache_add_icons                  (GtkIconCache *cache,
-                                                         const gchar  *directory,
-                                                         GHashTable   *hash_table);
-
-gint          gtk_icon_cache_get_icon_flags             (GtkIconCache *cache,
-                                                         const gchar  *icon_name,
-                                                         gint          directory_index);
-GdkPixbuf    *gtk_icon_cache_get_icon                   (GtkIconCache *cache,
-                                                         const gchar  *icon_name,
-                                                         gint          directory_index);
-
 GtkIconCache *gtk_icon_cache_ref                        (GtkIconCache *cache);
 void          gtk_icon_cache_unref                      (GtkIconCache *cache);