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symbols: improve FindKeyForSymbol() 

A bit more involved, but can short circuit.

Signed-off-by: Ran Benita <ran234@gmail.com>
master
Ran Benita 2014-09-25 21:55:52 +03:00
parent 485b736f17
commit 2c259f1782
1 changed files with 22 additions and 28 deletions
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50
src/xkbcomp/symbols.c
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@ -1243,38 +1243,32 @@ HandleSymbolsFile(SymbolsInfo *info, XkbFile *file, enum merge_mode merge)
static struct xkb_key *
FindKeyForSymbol(struct xkb_keymap *keymap, xkb_keysym_t sym)
{
struct xkb_key *key, *ret = NULL;
xkb_layout_index_t group, min_group = UINT32_MAX;
xkb_level_index_t level, min_level = UINT32_MAX;
struct xkb_key *key;
xkb_layout_index_t group;
xkb_level_index_t level;
bool got_one_group, got_one_level;
xkb_keys_foreach(key, keymap) {
for (group = 0; group < key->num_groups; group++) {
for (level = 0; level < XkbKeyGroupWidth(key, group); level++) {
if (key->groups[group].levels[level].num_syms != 1 ||
key->groups[group].levels[level].u.sym != sym)
continue;
/*
* If the keysym was found in a group or level > 0, we must
* keep looking since we might find a key in which the keysym
* is in a lower group or level.
*/
if (group < min_group ||
(group == min_group && level < min_level)) {
ret = key;
if (group == 0 && level == 0) {
return ret;
}
else {
min_group = group;
min_level = level;
}
group = 0;
do {
got_one_group = false;
level = 0;
do {
got_one_level = false;
xkb_keys_foreach(key, keymap) {
if (group < key->num_groups &&
level < XkbKeyGroupWidth(key, group)) {
got_one_group = got_one_level = true;
if (key->groups[group].levels[level].num_syms == 1 &&
key->groups[group].levels[level].u.sym == sym)
return key;
}
}
}
}
level++;
} while (got_one_level);
group++;
} while (got_one_group);
return ret;
return NULL;
}
/*