efficiency tweaks

2 files changed, 44 insertions, 60 deletions

diff --git a/dmenu.c b/dmenu.c
index aa9254f..cff3e65 100644
--- a/dmenu.c
+++ b/dmenu.c
@@ -25,8 +25,8 @@ struct Item {
 
 static void appenditem(Item *item, Item **list, Item **last);
 static void calcoffsets(void);
+static char *cistrstr(const char *s, const char *sub);
 static void drawmenu(void);
-static char *fstrstr(const char *s, const char *sub);
 static void grabkeyboard(void);
 static void insert(const char *str, ssize_t n);
 static void keypress(XKeyEvent *ev);
@@ -60,6 +60,7 @@ static Item *prev, *curr, *next, *sel;
 static Window win;
 
 static int (*fstrncmp)(const char *, const char *, size_t) = strncmp;
+static char *(*fstrstr)(const char *, const char *) = strstr;
 
 int
 main(int argc, char *argv[]) {
@@ -76,8 +77,10 @@ main(int argc, char *argv[]) {
                         topbar = False;
                 else if(!strcmp(argv[i], "-f"))
                         fast = True;
-                else if(!strcmp(argv[i], "-i"))
+                else if(!strcmp(argv[i], "-i")) {
                         fstrncmp = strncasecmp;
+                        fstrstr = cistrstr;
+                }
                 else if(i+1 == argc)
                         usage();
                 /* double flags */
@@ -112,7 +115,7 @@ main(int argc, char *argv[]) {
         setup();
         run();
 
-        return EXIT_FAILURE;  /* should not reach */
+        return EXIT_FAILURE; /* unreachable */
 }
 
 void
@@ -121,6 +124,7 @@ appenditem(Item *item, Item **list, Item **last) {
                 *list = item;
         else
                 (*last)->right = item;
+
         item->left = *last;
         item->right = NULL;
         *last = item;
@@ -143,6 +147,16 @@ calcoffsets(void) {
                         break;
 }
 
+char *
+cistrstr(const char *s, const char *sub) {
+        size_t len;
+
+        for(len = strlen(sub); *s; s++)
+                if(!strncasecmp(s, sub, len))
+                        return (char *)s;
+        return NULL;
+}
+
 void
 drawmenu(void) {
         int curpos;
@@ -188,16 +202,6 @@ drawmenu(void) {
         mapdc(dc, win, mw, mh);
 }
 
-char *
-fstrstr(const char *s, const char *sub) {
-        size_t len;
-
-        for(len = strlen(sub); *s; s++)
-                if(!fstrncmp(s, sub, len))
-                        return (char *)s;
-        return NULL;
-}
-
 void
 grabkeyboard(void) {
         int i;
@@ -233,58 +237,37 @@ keypress(XKeyEvent *ev) {
 
                 XConvertCase(ksym, &lower, &upper);
                 switch(lower) {
-                default:
-                        return;
-                case XK_a:
-                        ksym = XK_Home;
-                        break;
-                case XK_b:
-                        ksym = XK_Left;
-                        break;
-                case XK_c:
-                        ksym = XK_Escape;
-                        break;
-                case XK_d:
-                        ksym = XK_Delete;
-                        break;
-                case XK_e:
-                        ksym = XK_End;
-                        break;
-                case XK_f:
-                        ksym = XK_Right;
-                        break;
-                case XK_h:
-                        ksym = XK_BackSpace;
-                        break;
-                case XK_i:
-                        ksym = XK_Tab;
-                        break;
-                case XK_j:
-                case XK_m:
-                        ksym = XK_Return;
-                        break;
-                case XK_k:  /* delete right */
+                case XK_a: ksym = XK_Home;      break;
+                case XK_b: ksym = XK_Left;      break;
+                case XK_c: ksym = XK_Escape;    break;
+                case XK_d: ksym = XK_Delete;    break;
+                case XK_e: ksym = XK_End;       break;
+                case XK_f: ksym = XK_Right;     break;
+                case XK_h: ksym = XK_BackSpace; break;
+                case XK_i: ksym = XK_Tab;       break;
+                case XK_j: ksym = XK_Return;    break;
+                case XK_m: ksym = XK_Return;    break;
+                case XK_n: ksym = XK_Up;        break;
+                case XK_p: ksym = XK_Down;      break;
+
+                case XK_k: /* delete right */
                         text[cursor] = '\0';
                         match(False);
                         break;
-                case XK_n:
-                        ksym = XK_Next;
-                        break;
-                case XK_p:
-                        ksym = XK_Prior;
-                        break;
-                case XK_u:  /* delete left */
+                case XK_u: /* delete left */
                         insert(NULL, 0 - cursor);
                         break;
-                case XK_w:  /* delete word */
+                case XK_w: /* delete word */
                         while(cursor > 0 && text[nextrune(-1)] == ' ')
                                 insert(NULL, nextrune(-1) - cursor);
                         while(cursor > 0 && text[nextrune(-1)] != ' ')
                                 insert(NULL, nextrune(-1) - cursor);
                         break;
-                case XK_y:  /* paste selection */
+                case XK_y: /* paste selection */
                         XConvertSelection(dc->dpy, XA_PRIMARY, utf8, utf8, win, CurrentTime);
                         return;
+                default:
+                        return;
                 }
         }
         switch(ksym) {
@@ -297,8 +280,9 @@ keypress(XKeyEvent *ev) {
                         return;
                 cursor = nextrune(+1);
         case XK_BackSpace:
-                if(cursor > 0)
-                        insert(NULL, nextrune(-1) - cursor);
+                if(cursor == 0)
+                        return;
+                insert(NULL, nextrune(-1) - cursor);
                 break;
         case XK_End:
                 if(text[cursor] != '\0') {
@@ -351,7 +335,7 @@ keypress(XKeyEvent *ev) {
                 break;
         case XK_Return:
         case XK_KP_Enter:
-                fputs((sel && !(ev->state & ShiftMask)) ? sel->text : text, stdout);
+                puts((sel && !(ev->state & ShiftMask)) ? sel->text : text);
                 exit(EXIT_SUCCESS);
         case XK_Right:
                 if(text[cursor] != '\0') {
@@ -468,7 +452,7 @@ run(void) {
                 switch(ev.type) {
                 case Expose:
                         if(ev.xexpose.count == 0)
-                                drawmenu();
+                                mapdc(dc, win, mw, mh);
                         break;
                 case KeyPress:
                         keypress(&ev.xkey);
diff --git a/draw.c b/draw.c
index 2028fd9..d0beee8 100644
--- a/draw.c
+++ b/draw.c
@@ -96,7 +96,7 @@ initdc(void) {
         DC *dc;
 
         if(!setlocale(LC_CTYPE, "") || !XSupportsLocale())
-                fprintf(stderr, "no locale support\n");
+                fputs("no locale support\n", stderr);
         if(!(dc = calloc(1, sizeof *dc)))
                 eprintf("cannot malloc %u bytes:", sizeof *dc);
         if(!(dc->dpy = XOpenDisplay(NULL)))
@@ -153,10 +153,10 @@ resizedc(DC *dc, unsigned int w, unsigned int h) {
         if(dc->canvas)
                 XFreePixmap(dc->dpy, dc->canvas);
 
-        dc->canvas = XCreatePixmap(dc->dpy, DefaultRootWindow(dc->dpy), w, h,
-                                   DefaultDepth(dc->dpy, DefaultScreen(dc->dpy)));
         dc->w = w;
         dc->h = h;
+        dc->canvas = XCreatePixmap(dc->dpy, DefaultRootWindow(dc->dpy), w, h,
+                                   DefaultDepth(dc->dpy, DefaultScreen(dc->dpy)));
 }
 
 int