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several performance tweaks

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anselm@anselm1 2008-03-22 14:52:00 +00:00
parent 745c46d8fa
commit 542c58d8d0
2 changed files with 44 additions and 19 deletions
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2
Makefile
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@ -1,5 +1,5 @@
# dmenu - dynamic menu
# © 2006-2007 Anselm R. Garbe, Sander van Dijk
# See LICENSE file for copyright and license details.
include config.mk

61
dmenu.c
View file

@ -35,13 +35,12 @@ typedef struct {
typedef struct Item Item;
struct Item {
char *text;
Bool matched;
Item *next; /* traverses all items */
Item *left, *right; /* traverses items matching current search pattern */
};
/* forward declarations */
Item *appenditem(Item *i, Item *last);
void appenditem(Item *i, Item **list, Item **last);
void calcoffsets(void);
char *cistrstr(const char *s, const char *sub);
void cleanup(void);
@ -92,17 +91,15 @@ Window root, win;
int (*fstrncmp)(const char *, const char *, size_t n) = strncmp;
char *(*fstrstr)(const char *, const char *) = strstr;
Item *
appenditem(Item *i, Item *last) {
if(!last)
item = i;
void
appenditem(Item *i, Item **list, Item **last) {
if(!(*last))
*list = i;
else
last->right = i;
i->left = last;
(*last)->right = i;
i->left = *last;
i->right = NULL;
last = i;
nitem++;
return last;
*last = i;
}
void
@ -521,19 +518,47 @@ kpress(XKeyEvent * e) {
void
match(char *pattern) {
unsigned int plen;
Item *i, *j;
Item *i, *itemend, *lexact, *lprefix, *lsubstr, *exactend, *prefixend, *substrend;
if(!pattern)
return;
plen = strlen(pattern);
item = j = NULL;
item = lexact = lprefix = lsubstr = itemend = exactend = prefixend = substrend = NULL;
nitem = 0;
for(i = allitems; i; i = i->next)
if((i->matched = !fstrncmp(pattern, i->text, plen)))
j = appenditem(i, j);
for(i = allitems; i; i = i->next)
if(!i->matched && fstrstr(i->text, pattern))
j = appenditem(i, j);
if(!fstrncmp(pattern, i->text, plen + 1)) {
appenditem(i, &lexact, &exactend);
nitem++;
}
else if(!fstrncmp(pattern, i->text, plen)) {
appenditem(i, &lprefix, &prefixend);
nitem++;
}
else if(fstrstr(i->text, pattern)) {
appenditem(i, &lsubstr, &substrend);
nitem++;
}
if(lexact) {
item = lexact;
itemend = exactend;
}
if(lprefix) {
if(itemend) {
itemend->right - lprefix;
lprefix->left = itemend;
}
else
item = lprefix;
itemend = prefixend;
}
if(lsubstr) {
if(itemend) {
itemend->right = lsubstr;
lsubstr->left = itemend;
}
else
item = lsubstr;
}
curr = prev = next = sel = item;
calcoffsets();
}