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Use location_get_changed_backends

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2001-06-21  Bradford Hovinen  <hovinen@ximian.com>

	* archive.c (archive_set_current_location): Use
	location_get_changed_backends

	* location.c (location_get_changed_backends):
	(location_does_backend_change): Implement
	(create_backends_list):
	(merge_backend_lists): Moved from archive.c

	* gui-backend-list.c (gui_backend_list_launch_current): Use
	location_does_backend_change when deciding whether to pass
	--location on the command line
This commit is contained in:
Bradford Hovinen 2001-06-21 21:48:12 +00:00 • committed by Bradford Hovinen (Gdict maintainer)
parent 22c09dbb52
commit 47d682e446
5 changed files with 162 additions and 100 deletions
Download patch file Download diff file Expand all files Collapse all files

144
archiver/location.c
View file

@ -116,6 +116,11 @@ static BackendNote *backend_note_new (gchar *backend_id,
static void backend_note_destroy (BackendNote *note);
static const BackendNote *find_note (Location *location, gchar *backend_id);
static GList *create_backends_list (Location *location1,
Location *location2);
static GList *merge_backend_lists (GList *backends1,
GList *backends2);
static void merge_xml_docs (xmlDocPtr child_doc,
xmlDocPtr parent_doc);
static void subtract_xml_doc (xmlDocPtr child_doc,
@ -1168,7 +1173,7 @@ location_set_id (Location *location, const gchar *locid)
*
* Gets XML snapshot data from all the backends contained in this location and
* archives those data
*/
**/
void
location_store_full_snapshot (Location *location)
@ -1181,6 +1186,61 @@ location_store_full_snapshot (Location *location)
NULL);
}
/**
* location_get_changed_backends:
* @location:
* @location1:
*
* Get a list of backends that change from location to location1
**/
GList *
location_get_changed_backends (Location *location, Location *location1)
{
GList *backends1, *backends2;
g_return_val_if_fail (location != NULL, NULL);
g_return_val_if_fail (IS_LOCATION (location), NULL);
g_return_val_if_fail (location1 != NULL, NULL);
g_return_val_if_fail (IS_LOCATION (location1), NULL);
backends1 = create_backends_list (location, location1);
backends2 = create_backends_list (location1, location);
return merge_backend_lists (backends1, backends2);
}
/**
* location_does_backend_change:
* @location:
* @location1:
* @backend_id:
*
* Return TRUE if a backend changes when changing from location to location1;
* FALSE otherwise
**/
gboolean
location_does_backend_change (Location *location, Location *location1,
gchar *backend_id)
{
GList *backends;
gboolean ret;
g_return_val_if_fail (location != NULL, FALSE);
g_return_val_if_fail (IS_LOCATION (location), FALSE);
g_return_val_if_fail (location1 != NULL, FALSE);
g_return_val_if_fail (IS_LOCATION (location1), FALSE);
g_return_val_if_fail (backend_id != NULL, FALSE);
backends = location_get_changed_backends (location, location1);
ret = !(g_list_find_custom (backends, backend_id,
(GCompareFunc) strcmp) == NULL);
g_list_free (backends);
return ret;
}
static gint
store_snapshot_cb (Location *location, gchar *backend_id)
{
@ -1490,7 +1550,6 @@ run_backend_proc (gchar *backend_id, gboolean do_get)
}
else if (pid == 0) {
int i;
gchar *path, *path1;
dup2 (fd[c_fd], c_fd);
close (fd[p_fd]);
@ -1656,6 +1715,87 @@ merge_xml_nodes (xmlNodePtr node1, xmlNodePtr node2)
g_list_free (node1_children);
}
/* Create a list of backends that differ between location1 and the common
* parent of location1 and location2 */
static GList *
create_backends_list (Location *location1, Location *location2)
{
Location *loc;
GList *location_path, *tail = NULL, *c, *tmp;
location_path = location_find_path_from_common_parent
(location1, location2);
/* Skip the first entry -- it is the common parent */
tmp = location_path;
location_path = location_path->next;
g_list_free_1 (tmp);
while (location_path != NULL) {
if (location_path->data != NULL) {
loc = LOCATION (location_path->data);
for (c = loc->p->contains_list; c; c = c->next)
tail = g_list_prepend
(tail, ((BackendNote *)c->data)->backend_id);
}
tmp = location_path;
location_path = location_path->next;
g_list_free_1 (tmp);
}
return g_list_reverse (tail);
}
/* Merge two backend lists, eliminating duplicates */
static GList *
merge_backend_lists (GList *backends1, GList *backends2)
{
GList *head = NULL, *tail = NULL, *tmp;
int res;
backends1 = g_list_sort (backends1, (GCompareFunc) strcmp);
backends2 = g_list_sort (backends2, (GCompareFunc) strcmp);
while (backends1 && backends2) {
res = strcmp (backends1->data, backends2->data);
if (res < 0) {
if (tail != NULL) tail->next = backends1;
else head = backends1;
tail = backends1;
backends1 = backends1->next;
}
else if (res > 0) {
if (tail != NULL) tail->next = backends2;
else head = backends2;
tail = backends2;
backends2 = backends2->next;
} else {
if (tail != NULL) tail->next = backends1;
else head = backends1;
tail = backends1;
backends1 = backends1->next;
tmp = backends2;
backends2 = backends2->next;
g_list_free_1 (tmp);
}
}
if (backends1 != NULL) {
if (tail != NULL) tail->next = backends1;
else head = backends1;
}
else {
if (tail != NULL) tail->next = backends2;
else head = backends2;
}
return head;
}
/* Modifies node1 so that it only contains the parts different from node2;
* returns the modified node or NULL if the node should be destroyed
*