cleanup

[dmenu.git] / dmenu.c

diff --git a/dmenu.c b/dmenu.c
index 2684c91..cf5e4a6 100644 (file)
--- a/dmenu.c
+++ b/dmenu.c
@@ -1,4 +1,4 @@
-/* See LICENSE file for copynext and license details. */
+/* See LICENSE file for copyright and license details. */
 #include <ctype.h>
 #include <stdio.h>
 #include <stdlib.h>
@@ -38,7 +38,7 @@ static void setup(void);
 
 static char text[BUFSIZ] = "";
 static int bh, mw, mh;
-static int inputw = 0;
+static int inputw;
 static int lines = 0;
 static int monitor = -1;
 static int promptw;
@@ -55,8 +55,8 @@ static Atom utf8;
 static Bool topbar = True;
 static DC *dc;
 static Item *items = NULL;
-static Item *matches, *sel;
-static Item *prev, *curr, *next;
+static Item *matches, *matchend;
+static Item *prev, *curr, *next, *sel;
 static Window root, win;
 
 static int (*fstrncmp)(const char *, const char *, size_t) = strncmp;
@@ -66,7 +66,6 @@ main(int argc, char *argv[]) {
        Bool fast = False;
        int i;
 
-       progname = "dmenu";
        for(i = 1; i < argc; i++)
                /* single flags */
                if(!strcmp(argv[i], "-v")) {
@@ -79,7 +78,7 @@ main(int argc, char *argv[]) {
                        fast = True;
                else if(!strcmp(argv[i], "-i"))
                        fstrncmp = strncasecmp;
-               else if(i == argc-1)
+               else if(i+1 == argc)
                        goto usage;
                /* double flags */
                else if(!strcmp(argv[i], "-l"))
@@ -221,9 +220,9 @@ void
 insert(const char *s, ssize_t n) {
        if(strlen(text) + n > sizeof text - 1)
                return;
-       memmove(text + cursor + n, text + cursor, sizeof text - cursor - MAX(n, 0));
+       memmove(&text[cursor + n], &text[cursor], sizeof text - cursor - MAX(n, 0));
        if(n > 0)
-               memcpy(text + cursor, s, n);
+               memcpy(&text[cursor], s, n);
        cursor += n;
        match();
 }
@@ -308,12 +307,15 @@ keypress(XKeyEvent *ev) {
                        cursor = len;
                        break;
                }
-               while(next) {
-                       sel = curr = next;
+               if(next) {
+                       curr = matchend;
                        calcoffsets();
+                       curr = prev;
+                       calcoffsets();
+                       while(next && (curr = curr->right))
+                               calcoffsets();
                }
-               while(sel && sel->right)
-                       sel = sel->right;
+               sel = matchend;
                break;
        case XK_Escape:
                exit(EXIT_FAILURE);
@@ -380,11 +382,10 @@ keypress(XKeyEvent *ev) {
 
 void
 match(void) {
-       size_t len;
-       Item *item, *itemend, *lexact, *lprefix, *lsubstr, *exactend, *prefixend, *substrend;
+       size_t len = strlen(text);
+       Item *item, *lexact, *lprefix, *lsubstr, *exactend, *prefixend, *substrend;
 
-       len = strlen(text);
-       matches = lexact = lprefix = lsubstr = itemend = exactend = prefixend = substrend = NULL;
+       matches = lexact = lprefix = lsubstr = matchend = exactend = prefixend = substrend = NULL;
        for(item = items; item && item->text; item++)
                if(!fstrncmp(text, item->text, len + 1))
                        appenditem(item, &lexact, &exactend);
@@ -395,24 +396,25 @@ match(void) {
 
        if(lexact) {
                matches = lexact;
-               itemend = exactend;
+               matchend = exactend;
        }
        if(lprefix) {
-               if(itemend) {
-                       itemend->right = lprefix;
-                       lprefix->left = itemend;
+               if(matchend) {
+                       matchend->right = lprefix;
+                       lprefix->left = matchend;
                }
                else
                        matches = lprefix;
-               itemend = prefixend;
+               matchend = prefixend;
        }
        if(lsubstr) {
-               if(itemend) {
-                       itemend->right = lsubstr;
-                       lsubstr->left = itemend;
+               if(matchend) {
+                       matchend->right = lsubstr;
+                       lsubstr->left = matchend;
                }
                else
                        matches = lsubstr;
+               matchend = substrend;
        }
        curr = sel = matches;
        calcoffsets();
@@ -420,9 +422,8 @@ match(void) {
 
 size_t
 nextrune(int incr) {
-       size_t n, len;
+       size_t n, len = strlen(text);
 
-       len = strlen(text);
        for(n = cursor + incr; n >= 0 && n < len && (text[n] & 0xc0) == 0x80; n += incr);
        return n;
 }
@@ -443,19 +444,21 @@ paste(void) {
 
 void
 readstdin(void) {
-       char buf[sizeof text], *p;
-       size_t i, size = 0;
+       char buf[sizeof text], *p, *maxstr = NULL;
+       size_t i, max = 0, size = 0;
 
        for(i = 0; fgets(buf, sizeof buf, stdin); items[++i].text = NULL) {
-               if(i+1 == size / sizeof *items || !items)
+               if(i+1 >= size / sizeof *items)
                        if(!(items = realloc(items, (size += BUFSIZ))))
                                eprintf("cannot realloc %u bytes:", size);
                if((p = strchr(buf, '\n')))
                        *p = '\0';
                if(!(items[i].text = strdup(buf)))
                        eprintf("cannot strdup %u bytes:", strlen(buf)+1);
-               inputw = MAX(inputw, textw(dc, items[i].text));
+               if(strlen(items[i].text) > max)
+                       max = strlen(maxstr = items[i].text);
        }
+       inputw = maxstr ? textw(dc, maxstr) : 0;
 }
 
 void