dmenu

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commit 43540746077d4fd8ef963b5939934d32d59c9417
parent 4776d6dc6148498a1eab11dd3a15c03736f15d42
Author: Connor Lane Smith <cls@lubutu.com>
Date:   Sun, 15 May 2011 16:05:32 +0100

efficient incremental search
Diffstat:
M
dmenu.c
 | 
37
+++++++++++++++++++------------------

1 file changed, 19 insertions(+), 18 deletions(-)
diff --git a/dmenu.c b/dmenu.c
@@ -27,9 +27,9 @@ static void calcoffsets(void);
 static void drawmenu(void);
 static char *fstrstr(const char *s, const char *sub);
 static void grabkeyboard(void);
-static void insert(const char *s, ssize_t n);
+static void insert(const char *str, ssize_t n);
 static void keypress(XKeyEvent *ev);
-static void match(void);
+static void match(Bool sub);
 static size_t nextrune(int incr);
 static void paste(void);
 static void readstdin(void);
@@ -218,14 +218,14 @@ grabkeyboard(void) {
 }
 
 void
-insert(const char *s, ssize_t n) {
+insert(const char *str, ssize_t n) {
     if(strlen(text) + n > sizeof text - 1)
         return;
     memmove(&text[cursor + n], &text[cursor], sizeof text - cursor - MAX(n, 0));
     if(n > 0)
-        memcpy(&text[cursor], s, n);
+        memcpy(&text[cursor], str, n);
     cursor += n;
-    match();
+    match(n > 0);
 }
 
 void
@@ -269,7 +269,7 @@ keypress(XKeyEvent *ev) {
             break;
         case XK_k:  /* delete right */
             text[cursor] = '\0';
-            match();
+            match(False);
             break;
         case XK_n:
             ksym = XK_Down;
@@ -375,30 +375,31 @@ keypress(XKeyEvent *ev) {
             return;
         strncpy(text, sel->text, sizeof text);
         cursor = strlen(text);
-        match();
+        match(True);
         break;
     }
     drawmenu();
 }
 
 void
-match(void) {
+match(Bool sub) {
     size_t len = strlen(text);
-    Item *item, *lexact, *lprefix, *lsubstr, *exactend, *prefixend, *substrend;
+    Item *lexact, *lprefix, *lsubstr, *exactend, *prefixend, *substrend;
+    Item *item, *next = NULL;
 
-    matches = lexact = lprefix = lsubstr = matchend = exactend = prefixend = substrend = NULL;
-    for(item = items; item && item->text; item++)
+    lexact = lprefix = lsubstr = exactend = prefixend = substrend = NULL;
+    for(item = sub ? matches : items; item && item->text; item = next) {
+        next = sub ? item->right : item + 1;
         if(!fstrncmp(text, item->text, len + 1))
             appenditem(item, &lexact, &exactend);
         else if(!fstrncmp(text, item->text, len))
             appenditem(item, &lprefix, &prefixend);
         else if(fstrstr(item->text, text))
             appenditem(item, &lsubstr, &substrend);
-
-    if(lexact) {
-        matches = lexact;
-        matchend = exactend;
     }
+    matches = lexact;
+    matchend = exactend;
+
     if(lprefix) {
         if(matchend) {
             matchend->right = lprefix;
@@ -498,8 +499,8 @@ setup(void) {
 
     normcol[ColBG] = getcolor(dc, normbgcolor);
     normcol[ColFG] = getcolor(dc, normfgcolor);
-    selcol[ColBG] = getcolor(dc, selbgcolor);
-    selcol[ColFG] = getcolor(dc, selfgcolor);
+    selcol[ColBG]  = getcolor(dc, selbgcolor);
+    selcol[ColFG]  = getcolor(dc, selfgcolor);
 
     utf8 = XInternAtom(dc->dpy, "UTF8_STRING", False);
 
@@ -532,7 +533,7 @@ setup(void) {
     }
     inputw = MIN(inputw, mw/3);
     promptw = prompt ? textw(dc, prompt) : 0;
-    match();
+    match(False);
 
     /* menu window */
     wa.override_redirect = True;