mirror of
https://gitlab.gnome.org/GNOME/glib.git
synced 2024-11-05 17:06:18 +01:00
build: Move gvdb to a subproject
Rather than carrying the copylib around inside GLib, which is a pain to synchronise and affects our code coverage statistics. This requires updating the CI images to cache the new subproject, including updating the `cache-subprojects.sh` script to pull in git submodules. It also requires adding `gioenumtypes_dep` to be added to the dependencies list of `libgio`, since it needs to be build before GVDB as it’s pulled in by the GIO headers which GVDB includes. Signed-off-by: Philip Withnall <pwithnall@endlessos.org> Helps: #2603
This commit is contained in:
parent
d7c3b0fbf2
commit
b3f49d08a6
@ -10,10 +10,10 @@ cache:
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- _ccache/
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variables:
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FEDORA_IMAGE: "registry.gitlab.gnome.org/gnome/glib/fedora:v15"
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COVERITY_IMAGE: "registry.gitlab.gnome.org/gnome/glib/coverity:v4"
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DEBIAN_IMAGE: "registry.gitlab.gnome.org/gnome/glib/debian-stable:v10"
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MINGW_IMAGE: "registry.gitlab.gnome.org/gnome/glib/mingw:v6"
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FEDORA_IMAGE: "registry.gitlab.gnome.org/gnome/glib/fedora:v16"
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COVERITY_IMAGE: "registry.gitlab.gnome.org/gnome/glib/coverity:v5"
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DEBIAN_IMAGE: "registry.gitlab.gnome.org/gnome/glib/debian-stable:v11"
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MINGW_IMAGE: "registry.gitlab.gnome.org/gnome/glib/mingw:v7"
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MESON_TEST_TIMEOUT_MULTIPLIER: 2
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G_MESSAGES_DEBUG: all
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MESON_COMMON_OPTIONS: "--buildtype debug --wrap-mode=nodownload --fatal-meson-warnings"
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@ -3,6 +3,7 @@
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set -e
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git clone --depth 1 --no-tags https://gitlab.gnome.org/GNOME/glib.git
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git -C glib submodule update --init
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meson subprojects download --sourcedir glib
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rm glib/subprojects/*.wrap
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mv glib/subprojects/ .
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@ -1,4 +1,4 @@
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FROM registry.gitlab.gnome.org/gnome/glib/fedora:v14
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FROM registry.gitlab.gnome.org/gnome/glib/fedora:v16
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ARG COVERITY_SCAN_PROJECT_NAME
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ARG COVERITY_SCAN_TOKEN
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5
.gitmodules
vendored
Normal file
5
.gitmodules
vendored
Normal file
@ -0,0 +1,5 @@
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[submodule "subprojects/gvdb"]
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path = subprojects/gvdb
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url = https://gitlab.gnome.org/GNOME/gvdb.git
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branch = 0854af0fdb6d527a8d1999835ac2c5059976c210
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shallow = true
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@ -4,7 +4,6 @@ if get_option('gtk_doc')
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ignore_headers = [
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'gdbus-2.0',
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'gvdb',
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'inotify',
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'kqueue',
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'libasyncns',
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@ -1,636 +0,0 @@
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/*
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* Copyright © 2010 Codethink Limited
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*
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* This library is free software; you can redistribute it and/or
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* modify it under the terms of the GNU Lesser General Public
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* License as published by the Free Software Foundation; either
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* version 2.1 of the License, or (at your option) any later version.
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*
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* This library is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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* Lesser General Public License for more details.
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*
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* You should have received a copy of the GNU Lesser General Public
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* License along with this library; if not, see <http://www.gnu.org/licenses/>.
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*
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* Author: Ryan Lortie <desrt@desrt.ca>
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*/
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#include "gvdb-builder.h"
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#include "gvdb-format.h"
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#include <glib.h>
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#include <fcntl.h>
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#if !defined(G_OS_WIN32) || !defined(_MSC_VER)
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#include <unistd.h>
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#endif
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#include <string.h>
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struct _GvdbItem
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{
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gchar *key;
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guint32 hash_value;
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guint32_le assigned_index;
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GvdbItem *parent;
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GvdbItem *sibling;
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GvdbItem *next;
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/* one of:
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* this:
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*/
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GVariant *value;
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/* this: */
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GHashTable *table;
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/* or this: */
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GvdbItem *child;
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};
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static void
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gvdb_item_free (gpointer data)
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{
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GvdbItem *item = data;
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g_free (item->key);
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if (item->value)
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g_variant_unref (item->value);
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if (item->table)
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g_hash_table_unref (item->table);
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g_slice_free (GvdbItem, item);
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}
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GHashTable *
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gvdb_hash_table_new (GHashTable *parent,
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const gchar *name_in_parent)
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{
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GHashTable *table;
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table = g_hash_table_new_full (g_str_hash, g_str_equal,
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g_free, gvdb_item_free);
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if (parent)
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{
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GvdbItem *item;
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item = gvdb_hash_table_insert (parent, name_in_parent);
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gvdb_item_set_hash_table (item, table);
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}
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return table;
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}
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static guint32
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djb_hash (const gchar *key)
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{
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guint32 hash_value = 5381;
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while (*key)
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hash_value = hash_value * 33 + *(signed char *)key++;
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return hash_value;
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}
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GvdbItem *
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gvdb_hash_table_insert (GHashTable *table,
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const gchar *key)
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{
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GvdbItem *item;
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item = g_slice_new0 (GvdbItem);
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item->key = g_strdup (key);
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item->hash_value = djb_hash (key);
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g_hash_table_insert (table, g_strdup (key), item);
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return item;
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}
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void
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gvdb_hash_table_insert_string (GHashTable *table,
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const gchar *key,
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const gchar *value)
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{
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GvdbItem *item;
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item = gvdb_hash_table_insert (table, key);
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gvdb_item_set_value (item, g_variant_new_string (value));
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}
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void
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gvdb_item_set_value (GvdbItem *item,
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GVariant *value)
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{
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g_return_if_fail (!item->value && !item->table && !item->child);
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item->value = g_variant_ref_sink (value);
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}
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void
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gvdb_item_set_hash_table (GvdbItem *item,
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GHashTable *table)
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{
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g_return_if_fail (!item->value && !item->table && !item->child);
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item->table = g_hash_table_ref (table);
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}
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void
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gvdb_item_set_parent (GvdbItem *item,
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GvdbItem *parent)
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{
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GvdbItem **node;
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g_return_if_fail (g_str_has_prefix (item->key, parent->key));
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g_return_if_fail (!parent->value && !parent->table);
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g_return_if_fail (!item->parent && !item->sibling);
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for (node = &parent->child; *node; node = &(*node)->sibling)
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if (strcmp ((*node)->key, item->key) > 0)
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break;
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item->parent = parent;
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item->sibling = *node;
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*node = item;
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}
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typedef struct
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{
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GvdbItem **buckets;
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gint n_buckets;
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} HashTable;
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static HashTable *
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hash_table_new (gint n_buckets)
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{
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HashTable *table;
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table = g_slice_new (HashTable);
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table->buckets = g_new0 (GvdbItem *, n_buckets);
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table->n_buckets = n_buckets;
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return table;
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}
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static void
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hash_table_free (HashTable *table)
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{
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g_free (table->buckets);
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g_slice_free (HashTable, table);
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}
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static void
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hash_table_insert (gpointer key,
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gpointer value,
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gpointer data)
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{
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guint32 hash_value, bucket;
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HashTable *table = data;
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GvdbItem *item = value;
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hash_value = djb_hash (key);
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bucket = hash_value % table->n_buckets;
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item->next = table->buckets[bucket];
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table->buckets[bucket] = item;
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}
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static guint32_le
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item_to_index (GvdbItem *item)
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{
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if (item != NULL)
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return item->assigned_index;
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return guint32_to_le ((guint32) -1);
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}
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typedef struct
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{
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GQueue *chunks;
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guint64 offset;
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gboolean byteswap;
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} FileBuilder;
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typedef struct
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{
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gsize offset;
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gsize size;
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gpointer data;
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} FileChunk;
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static gpointer
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file_builder_allocate (FileBuilder *fb,
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guint alignment,
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gsize size,
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struct gvdb_pointer *pointer)
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{
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FileChunk *chunk;
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if (size == 0)
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return NULL;
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fb->offset += (guint64) (-fb->offset) & (alignment - 1);
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chunk = g_slice_new (FileChunk);
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chunk->offset = fb->offset;
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chunk->size = size;
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chunk->data = g_malloc (size);
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pointer->start = guint32_to_le (fb->offset);
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fb->offset += size;
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pointer->end = guint32_to_le (fb->offset);
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g_queue_push_tail (fb->chunks, chunk);
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return chunk->data;
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}
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static void
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file_builder_add_value (FileBuilder *fb,
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GVariant *value,
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struct gvdb_pointer *pointer)
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{
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GVariant *variant, *normal;
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gpointer data;
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gsize size;
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if (fb->byteswap)
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{
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value = g_variant_byteswap (value);
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variant = g_variant_new_variant (value);
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g_variant_unref (value);
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}
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else
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variant = g_variant_new_variant (value);
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normal = g_variant_get_normal_form (variant);
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g_variant_unref (variant);
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size = g_variant_get_size (normal);
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data = file_builder_allocate (fb, 8, size, pointer);
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g_variant_store (normal, data);
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g_variant_unref (normal);
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}
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static void
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file_builder_add_string (FileBuilder *fb,
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const gchar *string,
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guint32_le *start,
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guint16_le *size)
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{
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FileChunk *chunk;
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gsize length;
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length = strlen (string);
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chunk = g_slice_new (FileChunk);
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chunk->offset = fb->offset;
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chunk->size = length;
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chunk->data = g_malloc (length);
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if (length != 0)
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memcpy (chunk->data, string, length);
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*start = guint32_to_le (fb->offset);
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*size = guint16_to_le (length);
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fb->offset += length;
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g_queue_push_tail (fb->chunks, chunk);
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}
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static void
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file_builder_allocate_for_hash (FileBuilder *fb,
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gsize n_buckets,
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gsize n_items,
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guint bloom_shift,
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gsize n_bloom_words,
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guint32_le **bloom_filter,
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guint32_le **hash_buckets,
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struct gvdb_hash_item **hash_items,
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struct gvdb_pointer *pointer)
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{
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guint32_le bloom_hdr, table_hdr;
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guchar *data;
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gsize size;
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g_assert (n_bloom_words < (1u << 27));
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bloom_hdr = guint32_to_le (bloom_shift << 27 | n_bloom_words);
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table_hdr = guint32_to_le (n_buckets);
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size = sizeof bloom_hdr + sizeof table_hdr +
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n_bloom_words * sizeof (guint32_le) +
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n_buckets * sizeof (guint32_le) +
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n_items * sizeof (struct gvdb_hash_item);
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data = file_builder_allocate (fb, 4, size, pointer);
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#define chunk(s) (size -= (s), data += (s), data - (s))
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memcpy (chunk (sizeof bloom_hdr), &bloom_hdr, sizeof bloom_hdr);
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memcpy (chunk (sizeof table_hdr), &table_hdr, sizeof table_hdr);
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*bloom_filter = (guint32_le *) chunk (n_bloom_words * sizeof (guint32_le));
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*hash_buckets = (guint32_le *) chunk (n_buckets * sizeof (guint32_le));
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*hash_items = (struct gvdb_hash_item *) chunk (n_items *
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sizeof (struct gvdb_hash_item));
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g_assert (size == 0);
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#undef chunk
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memset (*bloom_filter, 0, n_bloom_words * sizeof (guint32_le));
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memset (*hash_buckets, 0, n_buckets * sizeof (guint32_le));
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memset (*hash_items, 0, n_items * sizeof (struct gvdb_hash_item));
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/* NOTE - the code to actually fill in the bloom filter here is missing.
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* Patches welcome!
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*
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* http://en.wikipedia.org/wiki/Bloom_filter
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* http://0pointer.de/blog/projects/bloom.html
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*/
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}
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static void
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file_builder_add_hash (FileBuilder *fb,
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GHashTable *table,
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struct gvdb_pointer *pointer)
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{
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guint32_le *buckets, *bloom_filter;
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struct gvdb_hash_item *items;
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HashTable *mytable;
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GvdbItem *item;
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guint32 index;
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gint bucket;
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mytable = hash_table_new (g_hash_table_size (table));
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g_hash_table_foreach (table, hash_table_insert, mytable);
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index = 0;
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||||
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for (bucket = 0; bucket < mytable->n_buckets; bucket++)
|
||||
for (item = mytable->buckets[bucket]; item; item = item->next)
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item->assigned_index = guint32_to_le (index++);
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file_builder_allocate_for_hash (fb, mytable->n_buckets, index, 5, 0,
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&bloom_filter, &buckets, &items, pointer);
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||||
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||||
index = 0;
|
||||
for (bucket = 0; bucket < mytable->n_buckets; bucket++)
|
||||
{
|
||||
buckets[bucket] = guint32_to_le (index);
|
||||
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||||
for (item = mytable->buckets[bucket]; item; item = item->next)
|
||||
{
|
||||
struct gvdb_hash_item *entry = items++;
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||||
const gchar *basename;
|
||||
|
||||
g_assert (index == guint32_from_le (item->assigned_index));
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||||
entry->hash_value = guint32_to_le (item->hash_value);
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||||
entry->parent = item_to_index (item->parent);
|
||||
entry->unused = 0;
|
||||
|
||||
if (item->parent != NULL)
|
||||
basename = item->key + strlen (item->parent->key);
|
||||
else
|
||||
basename = item->key;
|
||||
|
||||
file_builder_add_string (fb, basename,
|
||||
&entry->key_start,
|
||||
&entry->key_size);
|
||||
|
||||
if (item->value != NULL)
|
||||
{
|
||||
g_assert (item->child == NULL && item->table == NULL);
|
||||
|
||||
file_builder_add_value (fb, item->value, &entry->value.pointer);
|
||||
entry->type = 'v';
|
||||
}
|
||||
|
||||
if (item->child != NULL)
|
||||
{
|
||||
guint32 children = 0, i = 0;
|
||||
guint32_le *offsets;
|
||||
GvdbItem *child;
|
||||
|
||||
g_assert (item->table == NULL);
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||||
|
||||
for (child = item->child; child; child = child->sibling)
|
||||
children++;
|
||||
|
||||
offsets = file_builder_allocate (fb, 4, 4 * children,
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||||
&entry->value.pointer);
|
||||
entry->type = 'L';
|
||||
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||||
for (child = item->child; child; child = child->sibling)
|
||||
offsets[i++] = child->assigned_index;
|
||||
|
||||
g_assert (children == i);
|
||||
}
|
||||
|
||||
if (item->table != NULL)
|
||||
{
|
||||
entry->type = 'H';
|
||||
file_builder_add_hash (fb, item->table, &entry->value.pointer);
|
||||
}
|
||||
|
||||
index++;
|
||||
}
|
||||
}
|
||||
|
||||
hash_table_free (mytable);
|
||||
}
|
||||
|
||||
static FileBuilder *
|
||||
file_builder_new (gboolean byteswap)
|
||||
{
|
||||
FileBuilder *builder;
|
||||
|
||||
builder = g_slice_new (FileBuilder);
|
||||
builder->chunks = g_queue_new ();
|
||||
builder->offset = sizeof (struct gvdb_header);
|
||||
builder->byteswap = byteswap;
|
||||
|
||||
return builder;
|
||||
}
|
||||
|
||||
static void
|
||||
file_builder_free (FileBuilder *fb)
|
||||
{
|
||||
g_queue_free (fb->chunks);
|
||||
g_slice_free (FileBuilder, fb);
|
||||
}
|
||||
|
||||
static GString *
|
||||
file_builder_serialise (FileBuilder *fb,
|
||||
struct gvdb_pointer root)
|
||||
{
|
||||
struct gvdb_header header = { { 0, 0 }, { 0 }, { 0 }, { { 0 }, { 0 } } };
|
||||
GString *result;
|
||||
|
||||
memset (&header, 0, sizeof (header));
|
||||
|
||||
if (fb->byteswap)
|
||||
{
|
||||
header.signature[0] = GVDB_SWAPPED_SIGNATURE0;
|
||||
header.signature[1] = GVDB_SWAPPED_SIGNATURE1;
|
||||
}
|
||||
else
|
||||
{
|
||||
header.signature[0] = GVDB_SIGNATURE0;
|
||||
header.signature[1] = GVDB_SIGNATURE1;
|
||||
}
|
||||
|
||||
result = g_string_new (NULL);
|
||||
|
||||
header.root = root;
|
||||
g_string_append_len (result, (gpointer) &header, sizeof header);
|
||||
|
||||
while (!g_queue_is_empty (fb->chunks))
|
||||
{
|
||||
FileChunk *chunk = g_queue_pop_head (fb->chunks);
|
||||
|
||||
if (result->len != chunk->offset)
|
||||
{
|
||||
gchar zero[8] = { 0, };
|
||||
|
||||
g_assert (chunk->offset > result->len);
|
||||
g_assert (chunk->offset - result->len < 8);
|
||||
|
||||
g_string_append_len (result, zero, chunk->offset - result->len);
|
||||
g_assert (result->len == chunk->offset);
|
||||
}
|
||||
|
||||
g_string_append_len (result, chunk->data, chunk->size);
|
||||
g_free (chunk->data);
|
||||
|
||||
g_slice_free (FileChunk, chunk);
|
||||
}
|
||||
|
||||
return result;
|
||||
}
|
||||
|
||||
gboolean
|
||||
gvdb_table_write_contents (GHashTable *table,
|
||||
const gchar *filename,
|
||||
gboolean byteswap,
|
||||
GError **error)
|
||||
{
|
||||
struct gvdb_pointer root;
|
||||
gboolean status;
|
||||
FileBuilder *fb;
|
||||
GString *str;
|
||||
|
||||
g_return_val_if_fail (table != NULL, FALSE);
|
||||
g_return_val_if_fail (filename != NULL, FALSE);
|
||||
g_return_val_if_fail (error == NULL || *error == NULL, FALSE);
|
||||
|
||||
fb = file_builder_new (byteswap);
|
||||
file_builder_add_hash (fb, table, &root);
|
||||
str = file_builder_serialise (fb, root);
|
||||
file_builder_free (fb);
|
||||
|
||||
status = g_file_set_contents (filename, str->str, str->len, error);
|
||||
g_string_free (str, TRUE);
|
||||
|
||||
return status;
|
||||
}
|
||||
|
||||
typedef struct {
|
||||
GBytes *contents; /* (owned) */
|
||||
GFile *file; /* (owned) */
|
||||
} WriteContentsData;
|
||||
|
||||
static WriteContentsData *
|
||||
write_contents_data_new (GBytes *contents,
|
||||
GFile *file)
|
||||
{
|
||||
WriteContentsData *data;
|
||||
|
||||
data = g_slice_new (WriteContentsData);
|
||||
data->contents = g_bytes_ref (contents);
|
||||
data->file = g_object_ref (file);
|
||||
|
||||
return data;
|
||||
}
|
||||
|
||||
static void
|
||||
write_contents_data_free (WriteContentsData *data)
|
||||
{
|
||||
g_bytes_unref (data->contents);
|
||||
g_object_unref (data->file);
|
||||
g_slice_free (WriteContentsData, data);
|
||||
}
|
||||
|
||||
static void
|
||||
replace_contents_cb (GObject *source_object,
|
||||
GAsyncResult *result,
|
||||
gpointer user_data)
|
||||
{
|
||||
GTask *task = user_data;
|
||||
WriteContentsData *data = g_task_get_task_data (task);
|
||||
GError *error = NULL;
|
||||
|
||||
g_return_if_fail (g_task_get_source_tag (task) == gvdb_table_write_contents_async);
|
||||
|
||||
if (!g_file_replace_contents_finish (data->file, result, NULL, &error))
|
||||
g_task_return_error (task, g_steal_pointer (&error));
|
||||
else
|
||||
g_task_return_boolean (task, TRUE);
|
||||
|
||||
g_object_unref (task);
|
||||
}
|
||||
|
||||
void
|
||||
gvdb_table_write_contents_async (GHashTable *table,
|
||||
const gchar *filename,
|
||||
gboolean byteswap,
|
||||
GCancellable *cancellable,
|
||||
GAsyncReadyCallback callback,
|
||||
gpointer user_data)
|
||||
{
|
||||
struct gvdb_pointer root;
|
||||
FileBuilder *fb;
|
||||
WriteContentsData *data;
|
||||
GString *str;
|
||||
GBytes *bytes;
|
||||
GFile *file;
|
||||
GTask *task;
|
||||
|
||||
g_return_if_fail (table != NULL);
|
||||
g_return_if_fail (filename != NULL);
|
||||
g_return_if_fail (cancellable == NULL || G_IS_CANCELLABLE (cancellable));
|
||||
|
||||
fb = file_builder_new (byteswap);
|
||||
file_builder_add_hash (fb, table, &root);
|
||||
str = file_builder_serialise (fb, root);
|
||||
bytes = g_string_free_to_bytes (str);
|
||||
file_builder_free (fb);
|
||||
|
||||
file = g_file_new_for_path (filename);
|
||||
data = write_contents_data_new (bytes, file);
|
||||
|
||||
task = g_task_new (NULL, cancellable, callback, user_data);
|
||||
g_task_set_task_data (task, data, (GDestroyNotify)write_contents_data_free);
|
||||
g_task_set_source_tag (task, gvdb_table_write_contents_async);
|
||||
|
||||
g_file_replace_contents_async (file,
|
||||
g_bytes_get_data (bytes, NULL),
|
||||
g_bytes_get_size (bytes),
|
||||
NULL, FALSE,
|
||||
G_FILE_CREATE_PRIVATE,
|
||||
cancellable, replace_contents_cb, g_steal_pointer (&task));
|
||||
|
||||
g_bytes_unref (bytes);
|
||||
g_object_unref (file);
|
||||
}
|
||||
|
||||
gboolean
|
||||
gvdb_table_write_contents_finish (GHashTable *table,
|
||||
GAsyncResult *result,
|
||||
GError **error)
|
||||
{
|
||||
g_return_val_if_fail (table != NULL, FALSE);
|
||||
g_return_val_if_fail (g_task_is_valid (result, NULL), FALSE);
|
||||
g_return_val_if_fail (error == NULL || *error == NULL, FALSE);
|
||||
|
||||
return g_task_propagate_boolean (G_TASK (result), error);
|
||||
}
|
@ -1,66 +0,0 @@
|
||||
/*
|
||||
* Copyright © 2010 Codethink Limited
|
||||
*
|
||||
* This library is free software; you can redistribute it and/or
|
||||
* modify it under the terms of the GNU Lesser General Public
|
||||
* License as published by the Free Software Foundation; either
|
||||
* version 2.1 of the License, or (at your option) any later version.
|
||||
*
|
||||
* This library is distributed in the hope that it will be useful,
|
||||
* but WITHOUT ANY WARRANTY; without even the implied warranty of
|
||||
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
|
||||
* Lesser General Public License for more details.
|
||||
*
|
||||
* You should have received a copy of the GNU Lesser General Public
|
||||
* License along with this library; if not, see <http://www.gnu.org/licenses/>.
|
||||
*
|
||||
* Author: Ryan Lortie <desrt@desrt.ca>
|
||||
*/
|
||||
|
||||
#ifndef __gvdb_builder_h__
|
||||
#define __gvdb_builder_h__
|
||||
|
||||
#include <gio/gio.h>
|
||||
|
||||
typedef struct _GvdbItem GvdbItem;
|
||||
|
||||
G_GNUC_INTERNAL
|
||||
GHashTable * gvdb_hash_table_new (GHashTable *parent,
|
||||
const gchar *key);
|
||||
|
||||
G_GNUC_INTERNAL
|
||||
GvdbItem * gvdb_hash_table_insert (GHashTable *table,
|
||||
const gchar *key);
|
||||
G_GNUC_INTERNAL
|
||||
void gvdb_hash_table_insert_string (GHashTable *table,
|
||||
const gchar *key,
|
||||
const gchar *value);
|
||||
|
||||
G_GNUC_INTERNAL
|
||||
void gvdb_item_set_value (GvdbItem *item,
|
||||
GVariant *value);
|
||||
G_GNUC_INTERNAL
|
||||
void gvdb_item_set_hash_table (GvdbItem *item,
|
||||
GHashTable *table);
|
||||
G_GNUC_INTERNAL
|
||||
void gvdb_item_set_parent (GvdbItem *item,
|
||||
GvdbItem *parent);
|
||||
|
||||
G_GNUC_INTERNAL
|
||||
gboolean gvdb_table_write_contents (GHashTable *table,
|
||||
const gchar *filename,
|
||||
gboolean byteswap,
|
||||
GError **error);
|
||||
G_GNUC_INTERNAL
|
||||
void gvdb_table_write_contents_async (GHashTable *table,
|
||||
const gchar *filename,
|
||||
gboolean byteswap,
|
||||
GCancellable *cancellable,
|
||||
GAsyncReadyCallback callback,
|
||||
gpointer user_data);
|
||||
G_GNUC_INTERNAL
|
||||
gboolean gvdb_table_write_contents_finish (GHashTable *table,
|
||||
GAsyncResult *result,
|
||||
GError **error);
|
||||
|
||||
#endif /* __gvdb_builder_h__ */
|
@ -1,85 +0,0 @@
|
||||
/*
|
||||
* Copyright © 2010 Codethink Limited
|
||||
*
|
||||
* This library is free software; you can redistribute it and/or
|
||||
* modify it under the terms of the GNU Lesser General Public
|
||||
* License as published by the Free Software Foundation; either
|
||||
* version 2.1 of the License, or (at your option) any later version.
|
||||
*
|
||||
* This library is distributed in the hope that it will be useful,
|
||||
* but WITHOUT ANY WARRANTY; without even the implied warranty of
|
||||
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
|
||||
* Lesser General Public License for more details.
|
||||
*
|
||||
* You should have received a copy of the GNU Lesser General Public
|
||||
* License along with this library; if not, see <http://www.gnu.org/licenses/>.
|
||||
*
|
||||
* Author: Ryan Lortie <desrt@desrt.ca>
|
||||
*/
|
||||
|
||||
#ifndef __gvdb_format_h__
|
||||
#define __gvdb_format_h__
|
||||
|
||||
#include <glib.h>
|
||||
|
||||
typedef struct { guint16 value; } guint16_le;
|
||||
typedef struct { guint32 value; } guint32_le;
|
||||
|
||||
struct gvdb_pointer {
|
||||
guint32_le start;
|
||||
guint32_le end;
|
||||
};
|
||||
|
||||
struct gvdb_hash_header {
|
||||
guint32_le n_bloom_words;
|
||||
guint32_le n_buckets;
|
||||
};
|
||||
|
||||
struct gvdb_hash_item {
|
||||
guint32_le hash_value;
|
||||
guint32_le parent;
|
||||
|
||||
guint32_le key_start;
|
||||
guint16_le key_size;
|
||||
gchar type;
|
||||
gchar unused;
|
||||
|
||||
union
|
||||
{
|
||||
struct gvdb_pointer pointer;
|
||||
gchar direct[8];
|
||||
} value;
|
||||
};
|
||||
|
||||
struct gvdb_header {
|
||||
guint32 signature[2];
|
||||
guint32_le version;
|
||||
guint32_le options;
|
||||
|
||||
struct gvdb_pointer root;
|
||||
};
|
||||
|
||||
static inline guint32_le guint32_to_le (guint32 value) {
|
||||
guint32_le result = { GUINT32_TO_LE (value) };
|
||||
return result;
|
||||
}
|
||||
|
||||
static inline guint32 guint32_from_le (guint32_le value) {
|
||||
return GUINT32_FROM_LE (value.value);
|
||||
}
|
||||
|
||||
static inline guint16_le guint16_to_le (guint16 value) {
|
||||
guint16_le result = { GUINT16_TO_LE (value) };
|
||||
return result;
|
||||
}
|
||||
|
||||
static inline guint16 guint16_from_le (guint16_le value) {
|
||||
return GUINT16_FROM_LE (value.value);
|
||||
}
|
||||
|
||||
#define GVDB_SIGNATURE0 1918981703
|
||||
#define GVDB_SIGNATURE1 1953390953
|
||||
#define GVDB_SWAPPED_SIGNATURE0 GUINT32_SWAP_LE_BE (GVDB_SIGNATURE0)
|
||||
#define GVDB_SWAPPED_SIGNATURE1 GUINT32_SWAP_LE_BE (GVDB_SIGNATURE1)
|
||||
|
||||
#endif /* __gvdb_format_h__ */
|
@ -1,736 +0,0 @@
|
||||
/*
|
||||
* Copyright © 2010 Codethink Limited
|
||||
*
|
||||
* This library is free software; you can redistribute it and/or
|
||||
* modify it under the terms of the GNU Lesser General Public
|
||||
* License as published by the Free Software Foundation; either
|
||||
* version 2.1 of the License, or (at your option) any later version.
|
||||
*
|
||||
* This library is distributed in the hope that it will be useful,
|
||||
* but WITHOUT ANY WARRANTY; without even the implied warranty of
|
||||
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
|
||||
* Lesser General Public License for more details.
|
||||
*
|
||||
* You should have received a copy of the GNU Lesser General Public
|
||||
* License along with this library; if not, see <http://www.gnu.org/licenses/>.
|
||||
*
|
||||
* Author: Ryan Lortie <desrt@desrt.ca>
|
||||
*/
|
||||
|
||||
#include "gvdb-reader.h"
|
||||
#include "gvdb-format.h"
|
||||
|
||||
#include <string.h>
|
||||
|
||||
struct _GvdbTable {
|
||||
GBytes *bytes;
|
||||
|
||||
const gchar *data;
|
||||
gsize size;
|
||||
|
||||
gboolean byteswapped;
|
||||
gboolean trusted;
|
||||
|
||||
const guint32_le *bloom_words;
|
||||
guint32 n_bloom_words;
|
||||
guint bloom_shift;
|
||||
|
||||
const guint32_le *hash_buckets;
|
||||
guint32 n_buckets;
|
||||
|
||||
struct gvdb_hash_item *hash_items;
|
||||
guint32 n_hash_items;
|
||||
};
|
||||
|
||||
static const gchar *
|
||||
gvdb_table_item_get_key (GvdbTable *file,
|
||||
const struct gvdb_hash_item *item,
|
||||
gsize *size)
|
||||
{
|
||||
guint32 start, end;
|
||||
|
||||
start = guint32_from_le (item->key_start);
|
||||
*size = guint16_from_le (item->key_size);
|
||||
end = start + *size;
|
||||
|
||||
if G_UNLIKELY (start > end || end > file->size)
|
||||
return NULL;
|
||||
|
||||
return file->data + start;
|
||||
}
|
||||
|
||||
static gconstpointer
|
||||
gvdb_table_dereference (GvdbTable *file,
|
||||
const struct gvdb_pointer *pointer,
|
||||
gint alignment,
|
||||
gsize *size)
|
||||
{
|
||||
guint32 start, end;
|
||||
|
||||
start = guint32_from_le (pointer->start);
|
||||
end = guint32_from_le (pointer->end);
|
||||
|
||||
if G_UNLIKELY (start > end || end > file->size || start & (alignment - 1))
|
||||
return NULL;
|
||||
|
||||
*size = end - start;
|
||||
|
||||
return file->data + start;
|
||||
}
|
||||
|
||||
static void
|
||||
gvdb_table_setup_root (GvdbTable *file,
|
||||
const struct gvdb_pointer *pointer)
|
||||
{
|
||||
const struct gvdb_hash_header *header;
|
||||
guint32 n_bloom_words;
|
||||
guint32 n_buckets;
|
||||
gsize size;
|
||||
|
||||
header = gvdb_table_dereference (file, pointer, 4, &size);
|
||||
|
||||
if G_UNLIKELY (header == NULL || size < sizeof *header)
|
||||
return;
|
||||
|
||||
size -= sizeof *header;
|
||||
|
||||
n_bloom_words = guint32_from_le (header->n_bloom_words);
|
||||
n_buckets = guint32_from_le (header->n_buckets);
|
||||
n_bloom_words &= (1u << 27) - 1;
|
||||
|
||||
if G_UNLIKELY (n_bloom_words * sizeof (guint32_le) > size)
|
||||
return;
|
||||
|
||||
file->bloom_words = (gpointer) (header + 1);
|
||||
size -= n_bloom_words * sizeof (guint32_le);
|
||||
file->n_bloom_words = n_bloom_words;
|
||||
|
||||
if G_UNLIKELY (n_buckets > G_MAXUINT / sizeof (guint32_le) ||
|
||||
n_buckets * sizeof (guint32_le) > size)
|
||||
return;
|
||||
|
||||
file->hash_buckets = file->bloom_words + file->n_bloom_words;
|
||||
size -= n_buckets * sizeof (guint32_le);
|
||||
file->n_buckets = n_buckets;
|
||||
|
||||
if G_UNLIKELY (size % sizeof (struct gvdb_hash_item))
|
||||
return;
|
||||
|
||||
file->hash_items = (gpointer) (file->hash_buckets + n_buckets);
|
||||
file->n_hash_items = size / sizeof (struct gvdb_hash_item);
|
||||
}
|
||||
|
||||
/**
|
||||
* gvdb_table_new_from_bytes:
|
||||
* @bytes: the #GBytes with the data
|
||||
* @trusted: if the contents of @bytes are trusted
|
||||
* @error: %NULL, or a pointer to a %NULL #GError
|
||||
*
|
||||
* Creates a new #GvdbTable from the contents of @bytes.
|
||||
*
|
||||
* This call can fail if the header contained in @bytes is invalid or if @bytes
|
||||
* is empty; if so, %G_FILE_ERROR_INVAL will be returned.
|
||||
*
|
||||
* You should call gvdb_table_free() on the return result when you no
|
||||
* longer require it.
|
||||
*
|
||||
* Returns: a new #GvdbTable
|
||||
**/
|
||||
GvdbTable *
|
||||
gvdb_table_new_from_bytes (GBytes *bytes,
|
||||
gboolean trusted,
|
||||
GError **error)
|
||||
{
|
||||
const struct gvdb_header *header;
|
||||
GvdbTable *file;
|
||||
|
||||
file = g_slice_new0 (GvdbTable);
|
||||
file->bytes = g_bytes_ref (bytes);
|
||||
file->data = g_bytes_get_data (bytes, &file->size);
|
||||
file->trusted = trusted;
|
||||
|
||||
if (file->size < sizeof (struct gvdb_header))
|
||||
goto invalid;
|
||||
|
||||
header = (gpointer) file->data;
|
||||
|
||||
if (header->signature[0] == GVDB_SIGNATURE0 &&
|
||||
header->signature[1] == GVDB_SIGNATURE1 &&
|
||||
guint32_from_le (header->version) == 0)
|
||||
file->byteswapped = FALSE;
|
||||
|
||||
else if (header->signature[0] == GVDB_SWAPPED_SIGNATURE0 &&
|
||||
header->signature[1] == GVDB_SWAPPED_SIGNATURE1 &&
|
||||
guint32_from_le (header->version) == 0)
|
||||
file->byteswapped = TRUE;
|
||||
|
||||
else
|
||||
goto invalid;
|
||||
|
||||
gvdb_table_setup_root (file, &header->root);
|
||||
|
||||
return file;
|
||||
|
||||
invalid:
|
||||
g_set_error_literal (error, G_FILE_ERROR, G_FILE_ERROR_INVAL, "invalid gvdb header");
|
||||
|
||||
g_bytes_unref (file->bytes);
|
||||
|
||||
g_slice_free (GvdbTable, file);
|
||||
|
||||
return NULL;
|
||||
}
|
||||
|
||||
/**
|
||||
* gvdb_table_new:
|
||||
* @filename: a filename
|
||||
* @trusted: if the contents of @bytes are trusted
|
||||
* @error: %NULL, or a pointer to a %NULL #GError
|
||||
*
|
||||
* Creates a new #GvdbTable using the #GMappedFile for @filename as the
|
||||
* #GBytes.
|
||||
*
|
||||
* This function will fail if the file cannot be opened.
|
||||
* In that case, the #GError that is returned will be an error from
|
||||
* g_mapped_file_new().
|
||||
*
|
||||
* An empty or corrupt file will result in %G_FILE_ERROR_INVAL.
|
||||
*
|
||||
* Returns: a new #GvdbTable
|
||||
**/
|
||||
GvdbTable *
|
||||
gvdb_table_new (const gchar *filename,
|
||||
gboolean trusted,
|
||||
GError **error)
|
||||
{
|
||||
GMappedFile *mapped;
|
||||
GvdbTable *table;
|
||||
GBytes *bytes;
|
||||
|
||||
mapped = g_mapped_file_new (filename, FALSE, error);
|
||||
if (!mapped)
|
||||
return NULL;
|
||||
|
||||
bytes = g_mapped_file_get_bytes (mapped);
|
||||
table = gvdb_table_new_from_bytes (bytes, trusted, error);
|
||||
g_mapped_file_unref (mapped);
|
||||
g_bytes_unref (bytes);
|
||||
|
||||
g_prefix_error (error, "%s: ", filename);
|
||||
|
||||
return table;
|
||||
}
|
||||
|
||||
static gboolean
|
||||
gvdb_table_bloom_filter (GvdbTable *file,
|
||||
guint32 hash_value)
|
||||
{
|
||||
guint32 word, mask;
|
||||
|
||||
if (file->n_bloom_words == 0)
|
||||
return TRUE;
|
||||
|
||||
word = (hash_value / 32) % file->n_bloom_words;
|
||||
mask = 1 << (hash_value & 31);
|
||||
mask |= 1 << ((hash_value >> file->bloom_shift) & 31);
|
||||
|
||||
return (guint32_from_le (file->bloom_words[word]) & mask) == mask;
|
||||
}
|
||||
|
||||
static gboolean
|
||||
gvdb_table_check_name (GvdbTable *file,
|
||||
struct gvdb_hash_item *item,
|
||||
const gchar *key,
|
||||
guint key_length)
|
||||
{
|
||||
const gchar *this_key;
|
||||
gsize this_size;
|
||||
guint32 parent;
|
||||
|
||||
this_key = gvdb_table_item_get_key (file, item, &this_size);
|
||||
|
||||
if G_UNLIKELY (this_key == NULL || this_size > key_length)
|
||||
return FALSE;
|
||||
|
||||
key_length -= this_size;
|
||||
|
||||
if G_UNLIKELY (memcmp (this_key, key + key_length, this_size) != 0)
|
||||
return FALSE;
|
||||
|
||||
parent = guint32_from_le (item->parent);
|
||||
if (key_length == 0 && parent == 0xffffffffu)
|
||||
return TRUE;
|
||||
|
||||
if G_LIKELY (parent < file->n_hash_items && this_size > 0)
|
||||
return gvdb_table_check_name (file,
|
||||
&file->hash_items[parent],
|
||||
key, key_length);
|
||||
|
||||
return FALSE;
|
||||
}
|
||||
|
||||
static const struct gvdb_hash_item *
|
||||
gvdb_table_lookup (GvdbTable *file,
|
||||
const gchar *key,
|
||||
gchar type)
|
||||
{
|
||||
guint32 hash_value = 5381;
|
||||
guint key_length;
|
||||
guint32 bucket;
|
||||
guint32 lastno;
|
||||
guint32 itemno;
|
||||
|
||||
if G_UNLIKELY (file->n_buckets == 0 || file->n_hash_items == 0)
|
||||
return NULL;
|
||||
|
||||
for (key_length = 0; key[key_length]; key_length++)
|
||||
hash_value = (hash_value * 33) + ((signed char *) key)[key_length];
|
||||
|
||||
if (!gvdb_table_bloom_filter (file, hash_value))
|
||||
return NULL;
|
||||
|
||||
bucket = hash_value % file->n_buckets;
|
||||
itemno = guint32_from_le (file->hash_buckets[bucket]);
|
||||
|
||||
if (bucket == file->n_buckets - 1 ||
|
||||
(lastno = guint32_from_le(file->hash_buckets[bucket + 1])) > file->n_hash_items)
|
||||
lastno = file->n_hash_items;
|
||||
|
||||
while G_LIKELY (itemno < lastno)
|
||||
{
|
||||
struct gvdb_hash_item *item = &file->hash_items[itemno];
|
||||
|
||||
if (hash_value == guint32_from_le (item->hash_value))
|
||||
if G_LIKELY (gvdb_table_check_name (file, item, key, key_length))
|
||||
if G_LIKELY (item->type == type)
|
||||
return item;
|
||||
|
||||
itemno++;
|
||||
}
|
||||
|
||||
return NULL;
|
||||
}
|
||||
|
||||
static gboolean
|
||||
gvdb_table_list_from_item (GvdbTable *table,
|
||||
const struct gvdb_hash_item *item,
|
||||
const guint32_le **list,
|
||||
guint *length)
|
||||
{
|
||||
gsize size;
|
||||
|
||||
*list = gvdb_table_dereference (table, &item->value.pointer, 4, &size);
|
||||
|
||||
if G_LIKELY (*list == NULL || size % 4)
|
||||
return FALSE;
|
||||
|
||||
*length = size / 4;
|
||||
|
||||
return TRUE;
|
||||
}
|
||||
|
||||
/**
|
||||
* gvdb_table_get_names:
|
||||
* @table: a #GvdbTable
|
||||
* @length: (out) (optional): the number of items returned, or %NULL
|
||||
*
|
||||
* Gets a list of all names contained in @table.
|
||||
*
|
||||
* No call to gvdb_table_get_table(), gvdb_table_list() or
|
||||
* gvdb_table_get_value() will succeed unless it is for one of the
|
||||
* names returned by this function.
|
||||
*
|
||||
* Note that some names that are returned may still fail for all of the
|
||||
* above calls in the case of the corrupted file. Note also that the
|
||||
* returned strings may not be utf8.
|
||||
*
|
||||
* Returns: (array length=length): a %NULL-terminated list of strings, of length @length
|
||||
**/
|
||||
gchar **
|
||||
gvdb_table_get_names (GvdbTable *table,
|
||||
gsize *length)
|
||||
{
|
||||
gchar **names;
|
||||
guint n_names;
|
||||
guint filled;
|
||||
guint total;
|
||||
guint i;
|
||||
|
||||
/* We generally proceed by iterating over the list of items in the
|
||||
* hash table (in order of appearance) recording them into an array.
|
||||
*
|
||||
* Each item has a parent item (except root items). The parent item
|
||||
* forms part of the name of the item. We could go fetching the
|
||||
* parent item chain at the point that we encounter each item but then
|
||||
* we would need to implement some sort of recursion along with checks
|
||||
* for self-referential items.
|
||||
*
|
||||
* Instead, we do a number of passes. Each pass will build up one
|
||||
* level of names (starting from the root). We continue to do passes
|
||||
* until no more items are left. The first pass will only add root
|
||||
* items and each further pass will only add items whose direct parent
|
||||
* is an item added in the immediately previous pass. It's also
|
||||
* possible that items get filled if they follow their parent within a
|
||||
* particular pass.
|
||||
*
|
||||
* At most we will have a number of passes equal to the depth of the
|
||||
* tree. Self-referential items will never be filled in (since their
|
||||
* parent will have never been filled in). We continue until we have
|
||||
* a pass that fills in no additional items.
|
||||
*
|
||||
* This takes an O(n) algorithm and turns it into O(n*m) where m is
|
||||
* the depth of the tree, but typically the tree won't be very
|
||||
* deep and the constant factor of this algorithm is lower (and the
|
||||
* complexity of coding it, as well).
|
||||
*/
|
||||
|
||||
n_names = table->n_hash_items;
|
||||
names = g_new0 (gchar *, n_names + 1);
|
||||
|
||||
/* 'names' starts out all-NULL. On each pass we record the number
|
||||
* of items changed from NULL to non-NULL in 'filled' so we know if we
|
||||
* should repeat the loop. 'total' counts the total number of items
|
||||
* filled. If 'total' ends up equal to 'n_names' then we know that
|
||||
* 'names' has been completely filled.
|
||||
*/
|
||||
|
||||
total = 0;
|
||||
do
|
||||
{
|
||||
/* Loop until we have filled no more entries */
|
||||
filled = 0;
|
||||
|
||||
for (i = 0; i < n_names; i++)
|
||||
{
|
||||
const struct gvdb_hash_item *item = &table->hash_items[i];
|
||||
const gchar *name;
|
||||
gsize name_length;
|
||||
guint32 parent;
|
||||
|
||||
/* already got it on a previous pass */
|
||||
if (names[i] != NULL)
|
||||
continue;
|
||||
|
||||
parent = guint32_from_le (item->parent);
|
||||
|
||||
if (parent == 0xffffffffu)
|
||||
{
|
||||
/* it's a root item */
|
||||
name = gvdb_table_item_get_key (table, item, &name_length);
|
||||
|
||||
if (name != NULL)
|
||||
{
|
||||
names[i] = g_strndup (name, name_length);
|
||||
filled++;
|
||||
}
|
||||
}
|
||||
|
||||
else if (parent < n_names && names[parent] != NULL)
|
||||
{
|
||||
/* It's a non-root item whose parent was filled in already.
|
||||
*
|
||||
* Calculate the name of this item by combining it with
|
||||
* its parent name.
|
||||
*/
|
||||
name = gvdb_table_item_get_key (table, item, &name_length);
|
||||
|
||||
if (name != NULL)
|
||||
{
|
||||
const gchar *parent_name = names[parent];
|
||||
gsize parent_length;
|
||||
gchar *fullname;
|
||||
|
||||
parent_length = strlen (parent_name);
|
||||
fullname = g_malloc (parent_length + name_length + 1);
|
||||
memcpy (fullname, parent_name, parent_length);
|
||||
memcpy (fullname + parent_length, name, name_length);
|
||||
fullname[parent_length + name_length] = '\0';
|
||||
names[i] = fullname;
|
||||
filled++;
|
||||
}
|
||||
}
|
||||
}
|
||||
|
||||
total += filled;
|
||||
}
|
||||
while (filled && total < n_names);
|
||||
|
||||
/* If the table was corrupted then 'names' may have holes in it.
|
||||
* Collapse those.
|
||||
*/
|
||||
if G_UNLIKELY (total != n_names)
|
||||
{
|
||||
GPtrArray *fixed_names;
|
||||
|
||||
fixed_names = g_ptr_array_sized_new (n_names + 1 /* NULL terminator */);
|
||||
for (i = 0; i < n_names; i++)
|
||||
if (names[i] != NULL)
|
||||
g_ptr_array_add (fixed_names, names[i]);
|
||||
|
||||
g_free (names);
|
||||
n_names = fixed_names->len;
|
||||
g_ptr_array_add (fixed_names, NULL);
|
||||
names = (gchar **) g_ptr_array_free (fixed_names, FALSE);
|
||||
}
|
||||
|
||||
if (length)
|
||||
{
|
||||
G_STATIC_ASSERT (sizeof (*length) >= sizeof (n_names));
|
||||
*length = n_names;
|
||||
}
|
||||
|
||||
return names;
|
||||
}
|
||||
|
||||
/**
|
||||
* gvdb_table_list:
|
||||
* @file: a #GvdbTable
|
||||
* @key: a string
|
||||
*
|
||||
* List all of the keys that appear below @key. The nesting of keys
|
||||
* within the hash file is defined by the program that created the hash
|
||||
* file. One thing is constant: each item in the returned array can be
|
||||
* concatenated to @key to obtain the full name of that key.
|
||||
*
|
||||
* It is not possible to tell from this function if a given key is
|
||||
* itself a path, a value, or another hash table; you are expected to
|
||||
* know this for yourself.
|
||||
*
|
||||
* You should call g_strfreev() on the return result when you no longer
|
||||
* require it.
|
||||
*
|
||||
* Returns: a %NULL-terminated string array
|
||||
**/
|
||||
gchar **
|
||||
gvdb_table_list (GvdbTable *file,
|
||||
const gchar *key)
|
||||
{
|
||||
const struct gvdb_hash_item *item;
|
||||
const guint32_le *list;
|
||||
gchar **strv;
|
||||
guint length;
|
||||
guint i;
|
||||
|
||||
if ((item = gvdb_table_lookup (file, key, 'L')) == NULL)
|
||||
return NULL;
|
||||
|
||||
if (!gvdb_table_list_from_item (file, item, &list, &length))
|
||||
return NULL;
|
||||
|
||||
strv = g_new (gchar *, length + 1);
|
||||
for (i = 0; i < length; i++)
|
||||
{
|
||||
guint32 itemno = guint32_from_le (list[i]);
|
||||
|
||||
if (itemno < file->n_hash_items)
|
||||
{
|
||||
const struct gvdb_hash_item *item;
|
||||
const gchar *string;
|
||||
gsize strsize;
|
||||
|
||||
item = file->hash_items + itemno;
|
||||
|
||||
string = gvdb_table_item_get_key (file, item, &strsize);
|
||||
|
||||
if (string != NULL)
|
||||
strv[i] = g_strndup (string, strsize);
|
||||
else
|
||||
strv[i] = g_malloc0 (1);
|
||||
}
|
||||
else
|
||||
strv[i] = g_malloc0 (1);
|
||||
}
|
||||
|
||||
strv[i] = NULL;
|
||||
|
||||
return strv;
|
||||
}
|
||||
|
||||
/**
|
||||
* gvdb_table_has_value:
|
||||
* @file: a #GvdbTable
|
||||
* @key: a string
|
||||
*
|
||||
* Checks for a value named @key in @file.
|
||||
*
|
||||
* Note: this function does not consider non-value nodes (other hash
|
||||
* tables, for example).
|
||||
*
|
||||
* Returns: %TRUE if @key is in the table
|
||||
**/
|
||||
gboolean
|
||||
gvdb_table_has_value (GvdbTable *file,
|
||||
const gchar *key)
|
||||
{
|
||||
static const struct gvdb_hash_item *item;
|
||||
gsize size;
|
||||
|
||||
item = gvdb_table_lookup (file, key, 'v');
|
||||
|
||||
if (item == NULL)
|
||||
return FALSE;
|
||||
|
||||
return gvdb_table_dereference (file, &item->value.pointer, 8, &size) != NULL;
|
||||
}
|
||||
|
||||
static GVariant *
|
||||
gvdb_table_value_from_item (GvdbTable *table,
|
||||
const struct gvdb_hash_item *item)
|
||||
{
|
||||
GVariant *variant, *value;
|
||||
gconstpointer data;
|
||||
GBytes *bytes;
|
||||
gsize size;
|
||||
|
||||
data = gvdb_table_dereference (table, &item->value.pointer, 8, &size);
|
||||
|
||||
if G_UNLIKELY (data == NULL)
|
||||
return NULL;
|
||||
|
||||
bytes = g_bytes_new_from_bytes (table->bytes, ((gchar *) data) - table->data, size);
|
||||
variant = g_variant_new_from_bytes (G_VARIANT_TYPE_VARIANT, bytes, table->trusted);
|
||||
value = g_variant_get_variant (variant);
|
||||
g_variant_unref (variant);
|
||||
g_bytes_unref (bytes);
|
||||
|
||||
return value;
|
||||
}
|
||||
|
||||
/**
|
||||
* gvdb_table_get_value:
|
||||
* @file: a #GvdbTable
|
||||
* @key: a string
|
||||
*
|
||||
* Looks up a value named @key in @file.
|
||||
*
|
||||
* If the value is not found then %NULL is returned. Otherwise, a new
|
||||
* #GVariant instance is returned. The #GVariant does not depend on the
|
||||
* continued existence of @file.
|
||||
*
|
||||
* You should call g_variant_unref() on the return result when you no
|
||||
* longer require it.
|
||||
*
|
||||
* Returns: a #GVariant, or %NULL
|
||||
**/
|
||||
GVariant *
|
||||
gvdb_table_get_value (GvdbTable *file,
|
||||
const gchar *key)
|
||||
{
|
||||
const struct gvdb_hash_item *item;
|
||||
GVariant *value;
|
||||
|
||||
if ((item = gvdb_table_lookup (file, key, 'v')) == NULL)
|
||||
return NULL;
|
||||
|
||||
value = gvdb_table_value_from_item (file, item);
|
||||
|
||||
if (value && file->byteswapped)
|
||||
{
|
||||
GVariant *tmp;
|
||||
|
||||
tmp = g_variant_byteswap (value);
|
||||
g_variant_unref (value);
|
||||
value = tmp;
|
||||
}
|
||||
|
||||
return value;
|
||||
}
|
||||
|
||||
/**
|
||||
* gvdb_table_get_raw_value:
|
||||
* @table: a #GvdbTable
|
||||
* @key: a string
|
||||
*
|
||||
* Looks up a value named @key in @file.
|
||||
*
|
||||
* This call is equivalent to gvdb_table_get_value() except that it
|
||||
* never byteswaps the value.
|
||||
*
|
||||
* Returns: a #GVariant, or %NULL
|
||||
**/
|
||||
GVariant *
|
||||
gvdb_table_get_raw_value (GvdbTable *table,
|
||||
const gchar *key)
|
||||
{
|
||||
const struct gvdb_hash_item *item;
|
||||
|
||||
if ((item = gvdb_table_lookup (table, key, 'v')) == NULL)
|
||||
return NULL;
|
||||
|
||||
return gvdb_table_value_from_item (table, item);
|
||||
}
|
||||
|
||||
/**
|
||||
* gvdb_table_get_table:
|
||||
* @file: a #GvdbTable
|
||||
* @key: a string
|
||||
*
|
||||
* Looks up the hash table named @key in @file.
|
||||
*
|
||||
* The toplevel hash table in a #GvdbTable can contain reference to
|
||||
* child hash tables (and those can contain further references...).
|
||||
*
|
||||
* If @key is not found in @file then %NULL is returned. Otherwise, a
|
||||
* new #GvdbTable is returned, referring to the child hashtable as
|
||||
* contained in the file. This newly-created #GvdbTable does not depend
|
||||
* on the continued existence of @file.
|
||||
*
|
||||
* You should call gvdb_table_free() on the return result when you no
|
||||
* longer require it.
|
||||
*
|
||||
* Returns: a new #GvdbTable, or %NULL
|
||||
**/
|
||||
GvdbTable *
|
||||
gvdb_table_get_table (GvdbTable *file,
|
||||
const gchar *key)
|
||||
{
|
||||
const struct gvdb_hash_item *item;
|
||||
GvdbTable *new;
|
||||
|
||||
item = gvdb_table_lookup (file, key, 'H');
|
||||
|
||||
if (item == NULL)
|
||||
return NULL;
|
||||
|
||||
new = g_slice_new0 (GvdbTable);
|
||||
new->bytes = g_bytes_ref (file->bytes);
|
||||
new->byteswapped = file->byteswapped;
|
||||
new->trusted = file->trusted;
|
||||
new->data = file->data;
|
||||
new->size = file->size;
|
||||
|
||||
gvdb_table_setup_root (new, &item->value.pointer);
|
||||
|
||||
return new;
|
||||
}
|
||||
|
||||
/**
|
||||
* gvdb_table_free:
|
||||
* @file: a #GvdbTable
|
||||
*
|
||||
* Frees @file.
|
||||
**/
|
||||
void
|
||||
gvdb_table_free (GvdbTable *file)
|
||||
{
|
||||
g_bytes_unref (file->bytes);
|
||||
g_slice_free (GvdbTable, file);
|
||||
}
|
||||
|
||||
/**
|
||||
* gvdb_table_is_valid:
|
||||
* @table: a #GvdbTable
|
||||
*
|
||||
* Checks if the table is still valid.
|
||||
*
|
||||
* An on-disk GVDB can be marked as invalid. This happens when the file
|
||||
* has been replaced. The appropriate action is typically to reopen the
|
||||
* file.
|
||||
*
|
||||
* Returns: %TRUE if @table is still valid
|
||||
**/
|
||||
gboolean
|
||||
gvdb_table_is_valid (GvdbTable *table)
|
||||
{
|
||||
return !!*table->data;
|
||||
}
|
@ -1,78 +0,0 @@
|
||||
/*
|
||||
* Copyright © 2010 Codethink Limited
|
||||
*
|
||||
* This library is free software; you can redistribute it and/or
|
||||
* modify it under the terms of the GNU Lesser General Public
|
||||
* License as published by the Free Software Foundation; either
|
||||
* version 2.1 of the License, or (at your option) any later version.
|
||||
*
|
||||
* This library is distributed in the hope that it will be useful,
|
||||
* but WITHOUT ANY WARRANTY; without even the implied warranty of
|
||||
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
|
||||
* Lesser General Public License for more details.
|
||||
*
|
||||
* You should have received a copy of the GNU Lesser General Public
|
||||
* License along with this library; if not, see <http://www.gnu.org/licenses/>.
|
||||
*
|
||||
* Author: Ryan Lortie <desrt@desrt.ca>
|
||||
*/
|
||||
|
||||
#ifndef __gvdb_reader_h__
|
||||
#define __gvdb_reader_h__
|
||||
|
||||
#include <glib.h>
|
||||
|
||||
/* We cannot enable the weak attribute unconditionally here because both
|
||||
* gvdb/gvdb-reader.c and tests/dconf-mock-gvdb.c include this file. The
|
||||
* intention of using weak symbols here is to allow the latter to override
|
||||
* functions defined in the former, so functions in tests/dconf-mock-gvdb.c
|
||||
* must have strong bindings. */
|
||||
#ifdef GVDB_USE_WEAK_SYMBOLS
|
||||
# ifdef __GNUC__
|
||||
# define GVDB_GNUC_WEAK __attribute__((weak))
|
||||
# else
|
||||
# define GVDB_GNUC_WEAK
|
||||
# endif
|
||||
#else
|
||||
# define GVDB_GNUC_WEAK
|
||||
#endif
|
||||
|
||||
typedef struct _GvdbTable GvdbTable;
|
||||
|
||||
G_BEGIN_DECLS
|
||||
|
||||
G_GNUC_INTERNAL GVDB_GNUC_WEAK
|
||||
GvdbTable * gvdb_table_new_from_bytes (GBytes *bytes,
|
||||
gboolean trusted,
|
||||
GError **error);
|
||||
G_GNUC_INTERNAL GVDB_GNUC_WEAK
|
||||
GvdbTable * gvdb_table_new (const gchar *filename,
|
||||
gboolean trusted,
|
||||
GError **error);
|
||||
G_GNUC_INTERNAL GVDB_GNUC_WEAK
|
||||
void gvdb_table_free (GvdbTable *table);
|
||||
G_GNUC_INTERNAL GVDB_GNUC_WEAK
|
||||
gchar ** gvdb_table_get_names (GvdbTable *table,
|
||||
gsize *length);
|
||||
G_GNUC_INTERNAL GVDB_GNUC_WEAK
|
||||
gchar ** gvdb_table_list (GvdbTable *table,
|
||||
const gchar *key);
|
||||
G_GNUC_INTERNAL GVDB_GNUC_WEAK
|
||||
GvdbTable * gvdb_table_get_table (GvdbTable *table,
|
||||
const gchar *key);
|
||||
G_GNUC_INTERNAL GVDB_GNUC_WEAK
|
||||
GVariant * gvdb_table_get_raw_value (GvdbTable *table,
|
||||
const gchar *key);
|
||||
G_GNUC_INTERNAL GVDB_GNUC_WEAK
|
||||
GVariant * gvdb_table_get_value (GvdbTable *table,
|
||||
const gchar *key);
|
||||
|
||||
G_GNUC_INTERNAL GVDB_GNUC_WEAK
|
||||
gboolean gvdb_table_has_value (GvdbTable *table,
|
||||
const gchar *key);
|
||||
G_GNUC_INTERNAL GVDB_GNUC_WEAK
|
||||
gboolean gvdb_table_is_valid (GvdbTable *table);
|
||||
|
||||
G_END_DECLS
|
||||
|
||||
#endif /* __gvdb_reader_h__ */
|
@ -1,57 +0,0 @@
|
||||
<?xml version='1.0' encoding='utf-8'?>
|
||||
|
||||
<Project xmlns='http://usefulinc.com/ns/doap#'
|
||||
xmlns:foaf='http://xmlns.com/foaf/0.1/'
|
||||
xmlns:rdf='http://www.w3.org/1999/02/22-rdf-syntax-ns#'
|
||||
xmlns:gnome='http://api.gnome.org/doap-extensions#'>
|
||||
|
||||
<name xml:lang='en'>gvdb</name>
|
||||
<shortdesc xml:lang='en'>GVariant Database file</shortdesc>
|
||||
<description xml:lang='en'>
|
||||
A simple database file format that stores a mapping from strings to
|
||||
GVariant values in a way that is extremely efficient for lookups.
|
||||
|
||||
The database is written once and can not be modified.
|
||||
|
||||
Included here is reader code and a first-pass implementation of a
|
||||
writer (that does not currently produce particularly optimised
|
||||
output).
|
||||
|
||||
It is intended that this code be used by copy-pasting into your
|
||||
project or by making use of git-merge(1).
|
||||
</description>
|
||||
|
||||
<maintainer>
|
||||
<foaf:Person>
|
||||
<foaf:name>Matthias Clasen</foaf:name>
|
||||
<foaf:mbox rdf:resource="mailto:mclasen@redhat.com"/>
|
||||
<gnome:userid>matthiasc</gnome:userid>
|
||||
</foaf:Person>
|
||||
</maintainer>
|
||||
|
||||
<maintainer>
|
||||
<foaf:Person>
|
||||
<foaf:name>Allison Ryan Lortie</foaf:name>
|
||||
<foaf:mbox rdf:resource="mailto:desrt@desrt.ca"/>
|
||||
<gnome:userid>desrt</gnome:userid>
|
||||
</foaf:Person>
|
||||
</maintainer>
|
||||
|
||||
<maintainer>
|
||||
<foaf:Person>
|
||||
<foaf:name>Philip Withnall</foaf:name>
|
||||
<foaf:mbox rdf:resource="mailto:philip@tecnocode.co.uk"/>
|
||||
<foaf:mbox rdf:resource="mailto:withnall@endlessm.com"/>
|
||||
<gnome:userid>pwithnall</gnome:userid>
|
||||
</foaf:Person>
|
||||
</maintainer>
|
||||
|
||||
<maintainer>
|
||||
<foaf:Person>
|
||||
<foaf:name>Emmanuele Bassi</foaf:name>
|
||||
<foaf:mbox rdf:resource="mailto:ebassi@gnome.org"/>
|
||||
<gnome:userid>ebassi</gnome:userid>
|
||||
</foaf:Person>
|
||||
</maintainer>
|
||||
|
||||
</Project>
|
@ -261,7 +261,6 @@ settings_headers = files(
|
||||
)
|
||||
|
||||
settings_sources = files(
|
||||
'gvdb/gvdb-reader.c',
|
||||
'gdelayedsettingsbackend.c',
|
||||
'gkeyfilesettingsbackend.c',
|
||||
'gmemorysettingsbackend.c',
|
||||
@ -812,7 +811,8 @@ libgio = library('gio-2.0',
|
||||
link_with: internal_deps,
|
||||
dependencies : [libz_dep, libdl_dep, libmount_dep, libglib_dep,
|
||||
libgobject_dep, libgmodule_dep, selinux_dep, xattr_dep,
|
||||
platform_deps, network_libs, libsysprof_capture_dep],
|
||||
platform_deps, network_libs, libsysprof_capture_dep,
|
||||
gioenumtypes_dep, gvdb_dep],
|
||||
c_args : gio_c_args,
|
||||
objc_args : gio_c_args,
|
||||
# intl.lib is not compatible with SAFESEH
|
||||
@ -961,19 +961,19 @@ gio_querymodules = executable('gio-querymodules', 'gio-querymodules.c', 'giomodu
|
||||
dependencies : [libgio_dep, libgobject_dep, libgmodule_dep, libglib_dep])
|
||||
|
||||
glib_compile_schemas = executable('glib-compile-schemas',
|
||||
['gvdb/gvdb-builder.c', 'glib-compile-schemas.c'],
|
||||
['glib-compile-schemas.c'],
|
||||
install : true,
|
||||
# intl.lib is not compatible with SAFESEH
|
||||
link_args : noseh_link_args,
|
||||
dependencies : [libgio_dep, libgobject_dep, libgmodule_dep, libglib_dep])
|
||||
dependencies : [libgio_dep, libgobject_dep, libgmodule_dep, libglib_dep, gvdb_dep])
|
||||
|
||||
glib_compile_resources = executable('glib-compile-resources',
|
||||
[gconstructor_as_data_h, 'gvdb/gvdb-builder.c', 'glib-compile-resources.c'],
|
||||
[gconstructor_as_data_h, 'glib-compile-resources.c'],
|
||||
install : true,
|
||||
c_args : gio_c_args,
|
||||
# intl.lib is not compatible with SAFESEH
|
||||
link_args : noseh_link_args,
|
||||
dependencies : [libgio_dep, libgobject_dep, libgmodule_dep, libglib_dep])
|
||||
dependencies : [libgio_dep, libgobject_dep, libgmodule_dep, libglib_dep, gvdb_dep])
|
||||
|
||||
# Cannot override those programs in cross compilation case because they are
|
||||
# native executables that cannot be run on the build machine.
|
||||
|
@ -2033,6 +2033,9 @@ else
|
||||
use_pcre_static_flag = false
|
||||
endif
|
||||
|
||||
# Import the gvdb sources as a subproject to avoid having the copylib in-tree
|
||||
gvdb_dep = dependency('gvdb')
|
||||
|
||||
libm = cc.find_library('m', required : false)
|
||||
libffi_dep = dependency('libffi', version : '>= 3.0.0', fallback : ['libffi', 'ffi_dep'])
|
||||
|
||||
|
1
subprojects/gvdb
Submodule
1
subprojects/gvdb
Submodule
@ -0,0 +1 @@
|
||||
Subproject commit 0854af0fdb6d527a8d1999835ac2c5059976c210
|
8
subprojects/gvdb.wrap
Normal file
8
subprojects/gvdb.wrap
Normal file
@ -0,0 +1,8 @@
|
||||
[wrap-git]
|
||||
directory=gvdb
|
||||
url=https://gitlab.gnome.org/GNOME/gvdb.git
|
||||
revision=0854af0fdb6d527a8d1999835ac2c5059976c210
|
||||
depth=1
|
||||
|
||||
[provide]
|
||||
dependency_names = gvdb
|
Loading…
Reference in New Issue
Block a user