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Merge remote branch 'gvdb/master'

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This commit is contained in:
Ryan Lortie
2010-06-10 13:35:25 -04:00
parent 45e604d029 9a8cba9eb5
commit 7300702179
5 changed files with 150 additions and 102 deletions
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179
gio/gvdb/gvdb-reader.c
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@@ -241,10 +241,10 @@ gvdb_table_check_name (GvdbTable *file,
return FALSE;
}
const struct gvdb_hash_item *
static const struct gvdb_hash_item *
gvdb_table_lookup (GvdbTable *file,
const gchar *key,
gchar type)
const gchar *key,
gchar type)
{
guint32 hash_value = 5381;
guint key_length;
@@ -283,6 +283,37 @@ gvdb_table_lookup (GvdbTable *file,
return NULL;
}
static const struct gvdb_hash_item *
gvdb_table_get_item (GvdbTable *table,
guint32_le item_no)
{
guint32 item_no_native = guint32_from_le (item_no);
if G_LIKELY (item_no_native < table->n_hash_items)
return table->hash_items + item_no_native;
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_list:
* @file: a #GvdbTable
@@ -308,21 +339,17 @@ gvdb_table_list (GvdbTable *file,
const struct gvdb_hash_item *item;
const guint32_le *list;
gchar **strv;
gsize size;
guint length;
gint i;
if ((item = gvdb_table_lookup (file, key, 'L')) == NULL)
return NULL;
list = gvdb_table_dereference (file, &item->value.pointer, 4, &size);
if G_UNLIKELY (list == NULL || size % 4)
if (!gvdb_table_list_from_item (file, item, &list, &length))
return NULL;
size /= 4;
strv = g_new (gchar *, size + 1);
for (i = 0; i < size; i++)
strv = g_new (gchar *, length + 1);
for (i = 0; i < length; i++)
{
guint32 itemno = guint32_from_le (list[i]);
@@ -368,11 +395,33 @@ gvdb_table_has_value (GvdbTable *file,
return gvdb_table_lookup (file, key, 'v') != NULL;
}
static GVariant *
gvdb_table_value_from_item (GvdbTable *table,
const struct gvdb_hash_item *item)
{
GVariant *variant, *value;
gconstpointer data;
gsize size;
data = gvdb_table_dereference (table, &item->value.pointer, 8, &size);
if G_UNLIKELY (data == NULL)
return NULL;
variant = g_variant_new_from_data (G_VARIANT_TYPE_VARIANT,
data, size, table->trusted,
(GDestroyNotify) g_mapped_file_unref,
g_mapped_file_ref (table->mapped));
value = g_variant_get_variant (variant);
g_variant_unref (variant);
return value;
}
/**
* gvdb_table_get_value:
* @file: a #GvdbTable
* @key: a string
* @options: a pointer to a #GVariant, or %NULL
* @returns: a #GVariant, or %NULL
*
* Looks up a value named @key in @file.
@@ -381,55 +430,19 @@ gvdb_table_has_value (GvdbTable *file,
* #GVariant instance is returned. The #GVariant does not depend on the
* continued existence of @file.
*
* If @options is non-%NULL then it will be set either to %NULL in the
* case of no options or a #GVariant containing a dictionary mapping
* strings to variants.
*
* You should call g_variant_unref() on the return result when you no
* longer require it.
**/
GVariant *
gvdb_table_get_value (GvdbTable *file,
const gchar *key,
GVariant **options)
const gchar *key)
{
const struct gvdb_hash_item *item;
GVariant *variant, *value;
gconstpointer data;
gsize size;
if ((item = gvdb_table_lookup (file, key, 'v')) == NULL)
return NULL;
data = gvdb_table_dereference (file, &item->value.pointer, 8, &size);
if G_UNLIKELY (data == NULL)
return NULL;
variant = g_variant_new_from_data (G_VARIANT_TYPE_VARIANT,
data, size, file->trusted,
(GDestroyNotify) g_mapped_file_unref,
g_mapped_file_ref (file->mapped));
value = g_variant_get_variant (variant);
g_variant_unref (variant);
if (options != NULL)
{
data = gvdb_table_dereference (file, &item->options, 8, &size);
if (data != NULL && size > 0)
{
*options = g_variant_new_from_data (G_VARIANT_TYPE ("a{sv}"),
data, size, file->trusted,
(GDestroyNotify) g_mapped_file_unref,
g_mapped_file_ref (file->mapped));
g_variant_ref_sink (*options);
}
else
*options = NULL;
}
return value;
return gvdb_table_value_from_item (file, item);
}
/**
@@ -508,3 +521,69 @@ gvdb_table_unref (GvdbTable *file)
g_slice_free (GvdbTable, file);
}
}
void
gvdb_table_walk (GvdbTable *table,
const gchar *key,
GvdbWalkOpenFunc open_func,
GvdbWalkValueFunc value_func,
GvdbWalkCloseFunc close_func,
gpointer user_data)
{
const struct gvdb_hash_item *item;
const guint32_le *pointers[64];
const guint32_le *enders[64];
gint index = 0;
item = gvdb_table_lookup (table, key, 'L');
pointers[0] = NULL;
enders[0] = NULL;
goto start_here;
while (index)
{
close_func (user_data);
index--;
while (pointers[index] < enders[index])
{
const gchar *name;
gsize name_len;
item = gvdb_table_get_item (table, *pointers[index]++);
start_here:
if (item != NULL &&
(name = gvdb_table_item_get_key (table, item, &name_len)))
{
if (item->type == 'L')
{
if (open_func (name, name_len, user_data))
{
guint length;
index++;
g_assert (index < 64);
gvdb_table_list_from_item (table, item,
&pointers[index],
&length);
enders[index] = pointers[index] + length;
}
}
else if (item->type == 'v')
{
GVariant *value;
value = gvdb_table_value_from_item (table, item);
if (value != NULL)
{
value_func (name, name_len, value, user_data);
g_variant_unref (value);
}
}
}
}
}
}