/**
* Append child to parent.
*
* If this is a frequent operation, consider using an extended tree.
*/
void
etree_append_child(etree_t *tree, void *parent, void *child)
{
node_t *cn, *pn;
etree_check(tree);
g_assert(parent != NULL);
g_assert(child != NULL);
g_assert(etree_is_orphan(tree, child));
cn = ptr_add_offset(child, tree->offset);
pn = ptr_add_offset(parent, tree->offset);
if (etree_is_extended(tree)) {
nodex_t *px = ptr_add_offset(parent, tree->offset);
if (px->last_child != NULL) {
node_t *lcn = px->last_child;
g_assert(0 == ptr_cmp(lcn->parent, px));
g_assert(NULL == lcn->sibling);
lcn->sibling = cn;
} else {
g_assert(NULL == px->child);
px->child = cn;
}
px->last_child = cn;
} else {
if (NULL == pn->child) {
pn->child = cn;
} else {
node_t *lcn = etree_node_last_sibling(pn->child);
lcn->sibling = cn;
}
}
cn->parent = pn;
tree->count = 0; /* Tree count is now unknown */
}
/**
* Retrieve known GWC URLs.
* They are normally saved in ~/.gtk-gnutella/gwcache.
*/
static void
gwc_retrieve(void)
{
file_path_t fp[4], *fpv;
uint len, added;
int line, idx;
FILE *in;
char tmp[1024];
len = settings_file_path_load(fp, gwc_file, SFP_ALL);
g_assert(len <= N_ITEMS(fp));
fpv = &fp[0];
retry:
g_assert(ptr_cmp(fpv, &fp[N_ITEMS(fp)]) < 0);
if (&fp[0] == fpv)
in = file_config_open_read_chosen(gwc_what, fpv, len, &idx);
else
in = file_config_open_read_norename_chosen(gwc_what, fpv, len, &idx);
if (NULL == in)
return;
/*
* Retrieve each line, counting the amount of entries added.
*/
line = 0;
added = 0;
while (fgets(tmp, sizeof(tmp), in)) {
line++;
if (tmp[0] == '#') /* Skip comments */
continue;
if (tmp[0] == '\n') /* Allow empty lines */
continue;
(void) strchomp(tmp, 0);
if (gwc_add(tmp))
added++;
}
fclose(in);
/*
* Now check whether we added anything from that file, and if we have not
* and there are more backup files to open, retry with these fallbacks
* instead.
*/
if (0 == added && UNSIGNED(idx) < len - 1) {
g_warning("%s(): nothing loaded from \"%s/%s\", trying fallbacks",
G_STRFUNC, fpv[idx].dir, fpv[idx].name);
fpv += idx + 1;
len -= idx + 1;
g_assert(size_is_positive(len));
goto retry;
} else {
if (GNET_PROPERTY(bootstrap_debug)) {
g_debug("%s(): loaded %u URL%s from \"%s/%s\"",
G_STRFUNC, added, plural(added), fpv[idx].dir, fpv[idx].name);
}
}
}
