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apply nibble patch removing per-item length limit
[dmenu.git] / dmenu.c
diff --git a/dmenu.c b/dmenu.c
index b684175..f6552aa 100644 (file)
--- a/dmenu.c
+++ b/dmenu.c
@@ -2,16 +2,23 @@
 #include <ctype.h>
 #include <locale.h>
 #include <stdarg.h>
 #include <ctype.h>
 #include <locale.h>
 #include <stdarg.h>
-#include <stdlib.h>
 #include <stdio.h>
 #include <stdio.h>
+#include <stdlib.h>
 #include <string.h>
 #include <string.h>
+#include <strings.h>
 #include <unistd.h>
 #include <unistd.h>
+#include <X11/keysym.h>
 #include <X11/Xlib.h>
 #include <X11/Xutil.h>
 #include <X11/Xlib.h>
 #include <X11/Xutil.h>
-#include <X11/keysym.h>
+#ifdef XINERAMA
+#include <X11/extensions/Xinerama.h>
+#endif
 
 /* macros */
 
 /* macros */
-#define CLEANMASK(mask) (mask & ~(numlockmask | LockMask))
+#define CLEANMASK(mask)         (mask & ~(numlockmask | LockMask))
+#define INRECT(X,Y,RX,RY,RW,RH) ((X) >= (RX) && (X) < (RX) + (RW) && (Y) >= (RY) && (Y) < (RY) + (RH))
+#define MIN(a, b)               ((a) < (b) ? (a) : (b))
+#define MAX(a, b)               ((a) > (b) ? (a) : (b))
 
 /* enums */
 enum { ColFG, ColBG, ColLast };
 
 /* enums */
 enum { ColFG, ColBG, ColLast };
@@ -34,146 +41,82 @@ typedef struct {
 
 typedef struct Item Item;
 struct Item {
 
 typedef struct Item Item;
 struct Item {
+       char *text;
        Item *next;             /* traverses all items */
        Item *left, *right;     /* traverses items matching current search pattern */
        Item *next;             /* traverses all items */
        Item *left, *right;     /* traverses items matching current search pattern */
-       char *text;
 };
 
 /* forward declarations */
 };
 
 /* forward declarations */
-static void *emalloc(unsigned int size);
-static void eprint(const char *errstr, ...);
-static char *estrdup(const char *str);
-static void drawtext(const char *text, unsigned long col[ColLast]);
-static unsigned int textw(const char *text);
-static unsigned int textnw(const char *text, unsigned int len);
-static void calcoffsets(void);
+static void appenditem(Item *i, Item **list, Item **last);
+static void calcoffsetsh(void);
+static void calcoffsetsv(void);
+static char *cistrstr(const char *s, const char *sub);
+static void cleanup(void);
+static void drawcursor(void);
 static void drawmenu(void);
 static void drawmenu(void);
-static Bool grabkeyboard(void);
+static void drawmenuh(void);
+static void drawmenuv(void);
+static void drawtext(const char *text, unsigned long col[ColLast]);
+static void eprint(const char *errstr, ...);
 static unsigned long getcolor(const char *colstr);
 static unsigned long getcolor(const char *colstr);
+static Bool grabkeyboard(void);
 static void initfont(const char *fontstr);
 static void initfont(const char *fontstr);
-static int strido(const char *text, const char *pattern);
-static void match(char *pattern);
 static void kpress(XKeyEvent * e);
 static void kpress(XKeyEvent * e);
-static char *readstdin(void);
-static void usage(void);
+static void match(char *pattern);
+static void readstdin(void);
+static void run(void);
+static void setup(Bool topbar);
+static int textnw(const char *text, unsigned int len);
+static int textw(const char *text);
 
 
+#include "config.h"
 
 /* variables */
 
 /* variables */
-static int screen;
-static Display *dpy;
-static DC dc = {0};
-static char text[4096];
+static char *maxname = NULL;
 static char *prompt = NULL;
 static char *prompt = NULL;
-static int mw, mh;
+static char text[4096];
+static int cmdw = 0;
+static int promptw = 0;
 static int ret = 0;
 static int ret = 0;
-static int nitem = 0;
-static unsigned int cmdw = 0;
-static unsigned int promptw = 0;
+static int cursor = 0;
+static int screen;
+static unsigned int mw, mh;
 static unsigned int numlockmask = 0;
 static Bool running = True;
 static unsigned int numlockmask = 0;
 static Bool running = True;
+static Display *dpy;
+static DC dc;
 static Item *allitems = NULL;  /* first of all items */
 static Item *item = NULL;      /* first of pattern matching items */
 static Item *sel = NULL;
 static Item *next = NULL;
 static Item *prev = NULL;
 static Item *curr = NULL;
 static Item *allitems = NULL;  /* first of all items */
 static Item *item = NULL;      /* first of pattern matching items */
 static Item *sel = NULL;
 static Item *next = NULL;
 static Item *prev = NULL;
 static Item *curr = NULL;
-static Window root;
-static Window win;
-
-#include "config.h"
-
-static void *
-emalloc(unsigned int size) {
-       void *res = malloc(size);
-
-       if(!res)
-               eprint("fatal: could not malloc() %u bytes\n", size);
-       return res;
-}
-
-static void
-eprint(const char *errstr, ...) {
-       va_list ap;
-
-       va_start(ap, errstr);
-       vfprintf(stderr, errstr, ap);
-       va_end(ap);
-       exit(EXIT_FAILURE);
-}
-
-static char *
-estrdup(const char *str) {
-       void *res = strdup(str);
-
-       if(!res)
-               eprint("fatal: could not malloc() %u bytes\n", strlen(str));
-       return res;
-}
-
-
-static void
-drawtext(const char *text, unsigned long col[ColLast]) {
-       int x, y, w, h;
-       static char buf[256];
-       unsigned int len, olen;
-       XRectangle r = { dc.x, dc.y, dc.w, dc.h };
-
-       XSetForeground(dpy, dc.gc, col[ColBG]);
-       XFillRectangles(dpy, dc.drawable, dc.gc, &r, 1);
-       if(!text)
-               return;
-       w = 0;
-       olen = len = strlen(text);
-       if(len >= sizeof buf)
-               len = sizeof buf - 1;
-       memcpy(buf, text, len);
-       buf[len] = 0;
-       h = dc.font.ascent + dc.font.descent;
-       y = dc.y + (dc.h / 2) - (h / 2) + dc.font.ascent;
-       x = dc.x + (h / 2);
-       /* shorten text if necessary */
-       while(len && (w = textnw(buf, len)) > dc.w - h)
-               buf[--len] = 0;
-       if(len < olen) {
-               if(len > 1)
-                       buf[len - 1] = '.';
-               if(len > 2)
-                       buf[len - 2] = '.';
-               if(len > 3)
-                       buf[len - 3] = '.';
-       }
-       if(w > dc.w)
-               return; /* too long */
-       XSetForeground(dpy, dc.gc, col[ColFG]);
-       if(dc.font.set)
-               XmbDrawString(dpy, dc.drawable, dc.font.set, dc.gc, x, y, buf, len);
+static Window root, win;
+static int (*fstrncmp)(const char *, const char *, size_t n) = strncmp;
+static char *(*fstrstr)(const char *, const char *) = strstr;
+static Bool vlist = False;
+static unsigned int lines = 5;
+static void (*calcoffsets)(void) = calcoffsetsh;
+
+void
+appenditem(Item *i, Item **list, Item **last) {
+       if(!(*last))
+               *list = i;
        else
        else
-               XDrawString(dpy, dc.drawable, dc.gc, x, y, buf, len);
-}
-
-static unsigned int
-textw(const char *text) {
-       return textnw(text, strlen(text)) + dc.font.height;
-}
-
-static unsigned int
-textnw(const char *text, unsigned int len) {
-       XRectangle r;
-
-       if(dc.font.set) {
-               XmbTextExtents(dc.font.set, text, len, NULL, &r);
-               return r.width;
-       }
-       return XTextWidth(dc.font.xfont, text, len);
+               (*last)->right = i;
+       i->left = *last;
+       i->right = NULL;
+       *last = i;
 }
 
 }
 
-static void
-calcoffsets(void) {
-       unsigned int tw, w;
+void
+calcoffsetsh(void) {
+       int tw;
+       unsigned int w;
 
        if(!curr)
                return;
 
        if(!curr)
                return;
-       w = promptw + cmdw + 2 * SPACE;
+       w = promptw + cmdw + 2 * spaceitem;
        for(next = curr; next; next=next->right) {
                tw = textw(next->text);
                if(tw > mw / 3)
        for(next = curr; next; next=next->right) {
                tw = textw(next->text);
                if(tw > mw / 3)
@@ -182,7 +125,7 @@ calcoffsets(void) {
                if(w > mw)
                        break;
        }
                if(w > mw)
                        break;
        }
-       w = promptw + cmdw + 2 * SPACE;
+       w = promptw + cmdw + 2 * spaceitem;
        for(prev = curr; prev && prev->left; prev=prev->left) {
                tw = textw(prev->left->text);
                if(tw > mw / 3)
        for(prev = curr; prev && prev->left; prev=prev->left) {
                tw = textw(prev->left->text);
                if(tw > mw / 3)
@@ -193,10 +136,81 @@ calcoffsets(void) {
        }
 }
 
        }
 }
 
-static void
-drawmenu(void) {
-       Item *i;
+void
+calcoffsetsv(void) {
+       static unsigned int w;
+
+       if(!curr)
+               return;
+       w = (dc.font.height + 2) * (lines + 1);
+       for(next = curr; next; next=next->right) {
+               w -= dc.font.height + 2;
+               if(w <= 0)
+                       break;
+       }
+       w = (dc.font.height + 2) * (lines + 1);
+       for(prev = curr; prev && prev->left; prev=prev->left) {
+               w -= dc.font.height + 2;
+               if(w <= 0)
+                       break;
+       }
+}
 
 
+char *
+cistrstr(const char *s, const char *sub) {
+       int c, csub;
+       unsigned int len;
+
+       if(!sub)
+               return (char *)s;
+       if((c = *sub++) != 0) {
+               c = tolower(c);
+               len = strlen(sub);
+               do {
+                       do {
+                               if((csub = *s++) == 0)
+                                       return NULL;
+                       }
+                       while(tolower(csub) != c);
+               }
+               while(strncasecmp(s, sub, len) != 0);
+               s--;
+       }
+       return (char *)s;
+}
+
+void
+cleanup(void) {
+       Item *itm;
+
+       while(allitems) {
+               itm = allitems->next;
+               free(allitems->text);
+               free(allitems);
+               allitems = itm;
+       }
+       if(dc.font.set)
+               XFreeFontSet(dpy, dc.font.set);
+       else
+               XFreeFont(dpy, dc.font.xfont);
+       XFreePixmap(dpy, dc.drawable);
+       XFreeGC(dpy, dc.gc);
+       XDestroyWindow(dpy, win);
+       XUngrabKeyboard(dpy, CurrentTime);
+}
+
+void
+drawcursor(void) {
+       XRectangle r = { dc.x, dc.y + 2, 1, dc.font.height - 2 };
+
+       r.x += textnw(text, cursor) + dc.font.height / 2;
+
+       XSetForeground(dpy, dc.gc, dc.norm[ColFG]);
+       XFillRectangles(dpy, dc.drawable, dc.gc, &r, 1);
+}
+
+void
+drawmenu(void) {
        dc.x = 0;
        dc.y = 0;
        dc.w = mw;
        dc.x = 0;
        dc.y = 0;
        dc.w = mw;
@@ -213,41 +227,90 @@ drawmenu(void) {
        if(cmdw && item)
                dc.w = cmdw;
        drawtext(text[0] ? text : NULL, dc.norm);
        if(cmdw && item)
                dc.w = cmdw;
        drawtext(text[0] ? text : NULL, dc.norm);
+       drawcursor();
        dc.x += cmdw;
        if(curr) {
        dc.x += cmdw;
        if(curr) {
-               dc.w = SPACE;
-               drawtext((curr && curr->left) ? "<" : NULL, dc.norm);
-               dc.x += dc.w;
-               /* determine maximum items */
-               for(i = curr; i != next; i=i->right) {
-                       dc.w = textw(i->text);
-                       if(dc.w > mw / 3)
-                               dc.w = mw / 3;
-                       drawtext(i->text, (sel == i) ? dc.sel : dc.norm);
-                       dc.x += dc.w;
-               }
-               dc.x = mw - SPACE;
-               dc.w = SPACE;
-               drawtext(next ? ">" : NULL, dc.norm);
+               if(vlist)
+                       drawmenuv();
+               else
+                       drawmenuh();
        }
        XCopyArea(dpy, dc.drawable, win, dc.gc, 0, 0, mw, mh, 0, 0);
        XFlush(dpy);
 }
 
        }
        XCopyArea(dpy, dc.drawable, win, dc.gc, 0, 0, mw, mh, 0, 0);
        XFlush(dpy);
 }
 
-static Bool
-grabkeyboard(void) {
-       unsigned int len;
+void
+drawmenuh(void) {
+       Item *i;
 
 
-       for(len = 1000; len; len--) {
-               if(XGrabKeyboard(dpy, root, True, GrabModeAsync, GrabModeAsync, CurrentTime)
-                       == GrabSuccess)
-                       break;
-               usleep(1000);
+       dc.w = spaceitem;
+       drawtext((curr && curr->left) ? "<" : NULL, dc.norm);
+       dc.x += dc.w;
+       /* determine maximum items */
+       for(i = curr; i != next; i=i->right) {
+               dc.w = MIN(textw(i->text), mw / 3);
+               drawtext(i->text, (sel == i) ? dc.sel : dc.norm);
+               dc.x += dc.w;
        }
        }
-       return len > 0;
+       dc.x = mw - spaceitem;
+       dc.w = spaceitem;
+       drawtext(next ? ">" : NULL, dc.norm);
+}
+
+void
+drawmenuv(void) {
+       Item *i;
+
+       dc.x = 0;
+       dc.w = mw;
+       dc.y += dc.font.height + 2;
+       /* determine maximum items */
+       for(i = curr; i != next; i=i->right) {
+               drawtext(i->text, (sel == i) ? dc.sel : dc.norm);
+               dc.y += dc.font.height + 2;
+       }
+       drawtext(NULL, dc.norm);
+}
+
+void
+drawtext(const char *text, unsigned long col[ColLast]) {
+       char buf[256];
+       int i, x, y, h, len, olen;
+       XRectangle r = { dc.x, dc.y, dc.w, dc.h };
+
+       XSetForeground(dpy, dc.gc, col[ColBG]);
+       XFillRectangles(dpy, dc.drawable, dc.gc, &r, 1);
+       if(!text)
+               return;
+       olen = strlen(text);
+       h = dc.font.height;
+       y = dc.y + ((h+2) / 2) - (h / 2) + dc.font.ascent;
+       x = dc.x + (h / 2);
+       /* shorten text if necessary */
+       for(len = MIN(olen, sizeof buf); len && textnw(text, len) > dc.w - h; len--);
+       if(!len)
+               return;
+       memcpy(buf, text, len);
+       if(len < olen)
+               for(i = len; i && i > len - 3; buf[--i] = '.');
+       XSetForeground(dpy, dc.gc, col[ColFG]);
+       if(dc.font.set)
+               XmbDrawString(dpy, dc.drawable, dc.font.set, dc.gc, x, y, buf, len);
+       else
+               XDrawString(dpy, dc.drawable, dc.gc, x, y, buf, len);
 }
 
 }
 
-static unsigned long
+void
+eprint(const char *errstr, ...) {
+       va_list ap;
+
+       va_start(ap, errstr);
+       vfprintf(stderr, errstr, ap);
+       va_end(ap);
+       exit(EXIT_FAILURE);
+}
+
+unsigned long
 getcolor(const char *colstr) {
        Colormap cmap = DefaultColormap(dpy, screen);
        XColor color;
 getcolor(const char *colstr) {
        Colormap cmap = DefaultColormap(dpy, screen);
        XColor color;
@@ -257,7 +320,20 @@ getcolor(const char *colstr) {
        return color.pixel;
 }
 
        return color.pixel;
 }
 
-static void
+Bool
+grabkeyboard(void) {
+       unsigned int len;
+
+       for(len = 1000; len; len--) {
+               if(XGrabKeyboard(dpy, root, True, GrabModeAsync, GrabModeAsync, CurrentTime)
+               == GrabSuccess)
+                       break;
+               usleep(1000);
+       }
+       return len > 0;
+}
+
+void
 initfont(const char *fontstr) {
        char *def, **missing;
        int i, n;
 initfont(const char *fontstr) {
        char *def, **missing;
        int i, n;
@@ -265,8 +341,6 @@ initfont(const char *fontstr) {
        if(!fontstr || fontstr[0] == '\0')
                eprint("error, cannot load font: '%s'\n", fontstr);
        missing = NULL;
        if(!fontstr || fontstr[0] == '\0')
                eprint("error, cannot load font: '%s'\n", fontstr);
        missing = NULL;
-       if(dc.font.set)
-               XFreeFontSet(dpy, dc.font.set);
        dc.font.set = XCreateFontSet(dpy, fontstr, &missing, &n, &def);
        if(missing)
                XFreeStringList(missing);
        dc.font.set = XCreateFontSet(dpy, fontstr, &missing, &n, &def);
        if(missing)
                XFreeStringList(missing);
@@ -286,104 +360,50 @@ initfont(const char *fontstr) {
                }
        }
        else {
                }
        }
        else {
-               if(dc.font.xfont)
-                       XFreeFont(dpy, dc.font.xfont);
-               dc.font.xfont = NULL;
-               if(!(dc.font.xfont = XLoadQueryFont(dpy, fontstr))) {
-                       if(!(dc.font.xfont = XLoadQueryFont(dpy, "fixed")))
-                               eprint("error, cannot load font: '%s'\n", fontstr);
-               }
+               if(!(dc.font.xfont = XLoadQueryFont(dpy, fontstr))
+               && !(dc.font.xfont = XLoadQueryFont(dpy, "fixed")))
+                       eprint("error, cannot load font: '%s'\n", fontstr);
                dc.font.ascent = dc.font.xfont->ascent;
                dc.font.descent = dc.font.xfont->descent;
        }
        dc.font.height = dc.font.ascent + dc.font.descent;
 }
 
                dc.font.ascent = dc.font.xfont->ascent;
                dc.font.descent = dc.font.xfont->descent;
        }
        dc.font.height = dc.font.ascent + dc.font.descent;
 }
 
-static int
-strido(const char *text, const char *pattern) {
-       for(; *text && *pattern; text++)
-               if (*text == *pattern)
-                       pattern++;
-       return !*pattern;
-}                                  
-
-static void
-match(char *pattern) {
-       unsigned int plen;
-       Item *i, *j;
-
-       if(!pattern)
-               return;
-       plen = strlen(pattern);
-       item = j = NULL;
-       nitem = 0;
-       for(i = allitems; i; i=i->next)
-               if(!plen || !strncmp(pattern, i->text, plen)) {
-                       if(!j)
-                               item = i;
-                       else
-                               j->right = i;
-                       i->left = j;
-                       i->right = NULL;
-                       j = i;
-                       nitem++;
-               }
-       for(i = allitems; i; i=i->next)
-               if(plen && strncmp(pattern, i->text, plen)
-                               && strstr(i->text, pattern)) {
-                       if(!j)                               
-                               item = i;                              
-                       else                                     
-                               j->right = i;                          
-                       i->left = j;      
-                       i->right = NULL;                         
-                       j = i;                                      
-                       nitem++;                                       
-               }                                              
-       for(i = allitems; i; i=i->next)                            
-               if(plen && strncmp(pattern, i->text, plen)             
-                               && !strstr(i->text, pattern)          
-                               && strido(i->text,pattern)) { 
-                       if(!j)
-                               item = i;
-                       else
-                               j->right = i;
-                       i->left = j;
-                       i->right = NULL;
-                       j = i;
-                       nitem++;
-               }
-       curr = prev = next = sel = item;
-       calcoffsets();
-}
-
-static void
+void
 kpress(XKeyEvent * e) {
 kpress(XKeyEvent * e) {
-       char buf[32];
+       char buf[sizeof text];
        int i, num;
        unsigned int len;
        KeySym ksym;
 
        len = strlen(text);
        buf[0] = 0;
        int i, num;
        unsigned int len;
        KeySym ksym;
 
        len = strlen(text);
        buf[0] = 0;
-       num = XLookupString(e, buf, sizeof buf, &ksym, 0);
-       if(IsKeypadKey(ksym)) { 
-               if(ksym == XK_KP_Enter) {
+       num = XLookupString(e, buf, sizeof buf, &ksym, NULL);
+       if(IsKeypadKey(ksym)) {
+               if(ksym == XK_KP_Enter)
                        ksym = XK_Return;
                        ksym = XK_Return;
-               } else if(ksym >= XK_KP_0 && ksym <= XK_KP_9) {
+               else if(ksym >= XK_KP_0 && ksym <= XK_KP_9)
                        ksym = (ksym - XK_KP_0) + XK_0;
                        ksym = (ksym - XK_KP_0) + XK_0;
-               }
        }
        if(IsFunctionKey(ksym) || IsKeypadKey(ksym)
        }
        if(IsFunctionKey(ksym) || IsKeypadKey(ksym)
-                       || IsMiscFunctionKey(ksym) || IsPFKey(ksym)
-                       || IsPrivateKeypadKey(ksym))
+          || IsMiscFunctionKey(ksym) || IsPFKey(ksym)
+          || IsPrivateKeypadKey(ksym))
                return;
        /* first check if a control mask is omitted */
        if(e->state & ControlMask) {
                switch (ksym) {
                default:        /* ignore other control sequences */
                        return;
                return;
        /* first check if a control mask is omitted */
        if(e->state & ControlMask) {
                switch (ksym) {
                default:        /* ignore other control sequences */
                        return;
-               case XK_bracketleft:
+               case XK_a:
+               case XK_A:
+                       cursor = 0;
+                       break;
+               case XK_e:
+               case XK_E:
+                       cursor = strlen(text);
+                       break;
+               case XK_c:
+               case XK_C:
                        ksym = XK_Escape;
                        break;
                case XK_h:
                        ksym = XK_Escape;
                        break;
                case XK_h:
@@ -402,20 +422,18 @@ kpress(XKeyEvent * e) {
                case XK_U:
                        text[0] = 0;
                        match(text);
                case XK_U:
                        text[0] = 0;
                        match(text);
-                       drawmenu();
-                       return;
+                       break;
                case XK_w:
                case XK_W:
                case XK_w:
                case XK_W:
-                       if(len) {
-                               i = len - 1;
-                               while(i >= 0 && text[i] == ' ')
-                                       text[i--] = 0;
-                               while(i >= 0 && text[i] != ' ')
-                                       text[i--] = 0;
+                       if(cursor > 0) {
+                               i = cursor;
+                               while(i-- > 0 && text[i] == ' ');
+                               while(i-- > 0 && text[i] != ' ');
+                               memmove(text + i + 1, text + cursor, sizeof text - cursor);
+                               cursor = i + 1;
                                match(text);
                                match(text);
-                               drawmenu();
                        }
                        }
-                       return;
+                       break;
                }
        }
        if(CLEANMASK(e->state) & Mod1Mask) {
                }
        }
        if(CLEANMASK(e->state) & Mod1Mask) {
@@ -439,28 +457,49 @@ kpress(XKeyEvent * e) {
                case XK_G:
                        ksym = XK_End;
                        break;
                case XK_G:
                        ksym = XK_End;
                        break;
+               case XK_p:
+                       {
+                               FILE *fp;
+                               char *c;
+                               if(!(fp = (FILE*)popen("sselp", "r")))
+                                       eprint("dmenu: Could not popen sselp\n");
+                               c = fgets(buf, sizeof buf, fp);
+                               pclose(fp);
+                               if(c == NULL)
+                                       return;
+                       }
+                       num = strlen(buf);
+                       if(num && buf[num-1] == '\n')
+                               buf[--num] = '\0';
+                       break;
                }
        }
        switch(ksym) {
        default:
                }
        }
        switch(ksym) {
        default:
+               num = MIN(num, sizeof text - cursor);
                if(num && !iscntrl((int) buf[0])) {
                if(num && !iscntrl((int) buf[0])) {
-                       buf[num] = 0;
-                       if(len > 0)
-                               strncat(text, buf, sizeof text);
-                       else
-                               strncpy(text, buf, sizeof text);
+                       memmove(text + cursor + num, text + cursor, sizeof text - cursor - num);
+                       memcpy(text + cursor, buf, num);
+                       cursor+=num;
                        match(text);
                }
                break;
        case XK_BackSpace:
                        match(text);
                }
                break;
        case XK_BackSpace:
-               if(len) {
-                       text[--len] = 0;
+               if(cursor > 0) {
+                       memmove(text + cursor - 1, text + cursor, sizeof text - cursor + 1);
+                       cursor--;
                        match(text);
                }
                break;
                        match(text);
                }
                break;
+       case XK_Delete:
+               memmove(text + cursor, text + cursor + 1, sizeof text - cursor);
+               match(text);
+               break;
        case XK_End:
        case XK_End:
-               if(!item)
-                       return;
+               if(cursor < len) {
+                       cursor = len;
+                       break;
+               }
                while(next) {
                        sel = curr = next;
                        calcoffsets();
                while(next) {
                        sel = curr = next;
                        calcoffsets();
@@ -473,19 +512,26 @@ kpress(XKeyEvent * e) {
                running = False;
                break;
        case XK_Home:
                running = False;
                break;
        case XK_Home:
-               if(!item)
-                       return;
+               if(sel == item) {
+                       cursor = 0;
+                       break;
+               }
                sel = curr = item;
                calcoffsets();
                break;
        case XK_Left:
                sel = curr = item;
                calcoffsets();
                break;
        case XK_Left:
-               if(!(sel && sel->left))
-                       return;
-               sel=sel->left;
-               if(sel->right == curr) {
-                       curr = prev;
-                       calcoffsets();
+       case XK_Up:
+               if(sel && sel->left){
+                       sel=sel->left;
+                       if(sel->right == curr) {
+                               curr = prev;
+                               calcoffsets();
+                       }
                }
                }
+               else if(cursor > 0)
+                       cursor--;
+               else
+                       return;
                break;
        case XK_Next:
                if(!next)
                break;
        case XK_Next:
                if(!next)
@@ -500,202 +546,296 @@ kpress(XKeyEvent * e) {
                calcoffsets();
                break;
        case XK_Return:
                calcoffsets();
                break;
        case XK_Return:
-               if((e->state & ShiftMask) && text)
+               if((e->state & ShiftMask) || !sel)
                        fprintf(stdout, "%s", text);
                        fprintf(stdout, "%s", text);
-               else if(sel)
+               else
                        fprintf(stdout, "%s", sel->text);
                        fprintf(stdout, "%s", sel->text);
-               else if(text)
-                       fprintf(stdout, "%s", text);
                fflush(stdout);
                running = False;
                break;
        case XK_Right:
                fflush(stdout);
                running = False;
                break;
        case XK_Right:
-               if(!(sel && sel->right))
-                       return;
-               sel=sel->right;
-               if(sel == next) {
-                       curr = next;
-                       calcoffsets();
+       case XK_Down:
+               if(cursor < len)
+                       cursor++;
+               else if(sel && sel->right) {
+                       sel=sel->right;
+                       if(sel == next) {
+                               curr = next;
+                               calcoffsets();
+                       }
                }
                }
+               else
+                       return;
                break;
        case XK_Tab:
                if(!sel)
                        return;
                strncpy(text, sel->text, sizeof text);
                break;
        case XK_Tab:
                if(!sel)
                        return;
                strncpy(text, sel->text, sizeof text);
+               cursor = strlen(text);
                match(text);
                break;
        }
        drawmenu();
 }
 
                match(text);
                break;
        }
        drawmenu();
 }
 
-static char *
+void
+match(char *pattern) {
+       unsigned int plen;
+       Item *i, *itemend, *lexact, *lprefix, *lsubstr, *exactend, *prefixend, *substrend;
+
+       if(!pattern)
+               return;
+       plen = strlen(pattern);
+       item = lexact = lprefix = lsubstr = itemend = exactend = prefixend = substrend = NULL;
+       for(i = allitems; i; i = i->next)
+               if(!fstrncmp(pattern, i->text, plen + 1))
+                       appenditem(i, &lexact, &exactend);
+               else if(!fstrncmp(pattern, i->text, plen))
+                       appenditem(i, &lprefix, &prefixend);
+               else if(fstrstr(i->text, pattern))
+                       appenditem(i, &lsubstr, &substrend);
+       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();
+}
+
+void
 readstdin(void) {
 readstdin(void) {
-       static char *maxname = NULL;
        char *p, buf[1024];
        char *p, buf[1024];
-       unsigned int len = 0, max = 0;
+       unsigned int len = 0, blen = 0, max = 0;
        Item *i, *new;
 
        Item *i, *new;
 
-       i = 0;
+       i = 0, p = NULL;
        while(fgets(buf, sizeof buf, stdin)) {
        while(fgets(buf, sizeof buf, stdin)) {
-               len = strlen(buf);
-               if (buf[len - 1] == '\n')
-                       buf[len - 1] = 0;
-               p = estrdup(buf);
+               len += (blen = strlen(buf));
+               if(!(p = realloc(p, len))) {
+                       eprint("fatal: could not realloc() %u bytes\n", len);
+                       return;
+               }
+               memcpy (p + len - blen, buf, blen);
+               if (p[len - 1] == '\n')
+                       p[len - 1] = 0;
+               else if (!feof(stdin))
+                       continue;
                if(max < len) {
                        maxname = p;
                        max = len;
                }
                if(max < len) {
                        maxname = p;
                        max = len;
                }
-               new = emalloc(sizeof(Item));
+               len = 0;
+               if(!(new = (Item *)malloc(sizeof(Item))))
+                       eprint("fatal: could not malloc() %u bytes\n", sizeof(Item));
                new->next = new->left = new->right = NULL;
                new->text = p;
                new->next = new->left = new->right = NULL;
                new->text = p;
+               p = NULL;
                if(!i)
                        allitems = new;
                else 
                        i->next = new;
                i = new;
        }
                if(!i)
                        allitems = new;
                else 
                        i->next = new;
                i = new;
        }
-
-       return maxname;
 }
 
 }
 
-static void
-usage(void) {
-       eprint("usage: dmenu [-b] [-fn <font>] [-nb <color>] [-nf <color>]\n"
-               "             [-p <prompt>] [-sb <color>] [-sf <color>] [-v]\n");
+void
+run(void) {
+       XEvent ev;
+
+       /* main event loop */
+       while(running && !XNextEvent(dpy, &ev))
+               switch (ev.type) {
+               default:        /* ignore all crap */
+                       break;
+               case KeyPress:
+                       kpress(&ev.xkey);
+                       break;
+               case Expose:
+                       if(ev.xexpose.count == 0)
+                               drawmenu();
+                       break;
+               }
 }
 
 }
 
-int
-main(int argc, char *argv[]) {
-       Bool bottom = False;
-       char *font = FONT;
-       char *maxname;
-       char *normbg = NORMBGCOLOR;
-       char *normfg = NORMFGCOLOR;
-       char *selbg = SELBGCOLOR;
-       char *selfg = SELFGCOLOR;
-       int i, j;
-       Item *itm;
-       XEvent ev;
+void
+setup(Bool topbar) {
+       int i, j, x, y;
+#if XINERAMA
+       int n;
+       XineramaScreenInfo *info = NULL;
+#endif
        XModifierKeymap *modmap;
        XSetWindowAttributes wa;
 
        XModifierKeymap *modmap;
        XSetWindowAttributes wa;
 
-       /* command line args */
-       for(i = 1; i < argc; i++)
-               if(!strcmp(argv[i], "-b")) {
-                       bottom = True;
-               }
-               else if(!strcmp(argv[i], "-fn")) {
-                       if(++i < argc) font = argv[i];
-               }
-               else if(!strcmp(argv[i], "-nb")) {
-                       if(++i < argc) normbg = argv[i];
-               }
-               else if(!strcmp(argv[i], "-nf")) {
-                       if(++i < argc) normfg = argv[i];
-               }
-               else if(!strcmp(argv[i], "-p")) {
-                       if(++i < argc) prompt = argv[i];
-               }
-               else if(!strcmp(argv[i], "-sb")) {
-                       if(++i < argc) selbg = argv[i];
-               }
-               else if(!strcmp(argv[i], "-sf")) {
-                       if(++i < argc) selfg = argv[i];
-               }
-               else if(!strcmp(argv[i], "-v"))
-                       eprint("dmenu-"VERSION", © 2006-2007 Anselm R. Garbe, Sander van Dijk\n");
-               else
-                       usage();
-       setlocale(LC_CTYPE, "");
-       dpy = XOpenDisplay(0);
-       if(!dpy)
-               eprint("dmenu: cannot open display\n");
-       screen = DefaultScreen(dpy);
-       root = RootWindow(dpy, screen);
-       if(isatty(STDIN_FILENO)) {
-               maxname = readstdin();
-               running = grabkeyboard();
-       }
-       else { /* prevent keypress loss */
-               running = grabkeyboard();
-               maxname = readstdin();
-       }
        /* init modifier map */
        modmap = XGetModifierMapping(dpy);
        /* init modifier map */
        modmap = XGetModifierMapping(dpy);
-       for (i = 0; i < 8; i++) {
-               for (j = 0; j < modmap->max_keypermod; j++) {
+       for(i = 0; i < 8; i++)
+               for(j = 0; j < modmap->max_keypermod; j++) {
                        if(modmap->modifiermap[i * modmap->max_keypermod + j]
                        == XKeysymToKeycode(dpy, XK_Num_Lock))
                                numlockmask = (1 << i);
                }
                        if(modmap->modifiermap[i * modmap->max_keypermod + j]
                        == XKeysymToKeycode(dpy, XK_Num_Lock))
                                numlockmask = (1 << i);
                }
-       }
        XFreeModifiermap(modmap);
        XFreeModifiermap(modmap);
+
        /* style */
        /* style */
-       dc.norm[ColBG] = getcolor(normbg);
-       dc.norm[ColFG] = getcolor(normfg);
-       dc.sel[ColBG] = getcolor(selbg);
-       dc.sel[ColFG] = getcolor(selfg);
+       dc.norm[ColBG] = getcolor(normbgcolor);
+       dc.norm[ColFG] = getcolor(normfgcolor);
+       dc.sel[ColBG] = getcolor(selbgcolor);
+       dc.sel[ColFG] = getcolor(selfgcolor);
        initfont(font);
        initfont(font);
+
        /* menu window */
        /* menu window */
-       wa.override_redirect = 1;
+       wa.override_redirect = True;
        wa.background_pixmap = ParentRelative;
        wa.event_mask = ExposureMask | ButtonPressMask | KeyPressMask;
        wa.background_pixmap = ParentRelative;
        wa.event_mask = ExposureMask | ButtonPressMask | KeyPressMask;
-       mw = DisplayWidth(dpy, screen);
+
+       /* menu window geometry */
        mh = dc.font.height + 2;
        mh = dc.font.height + 2;
-       win = XCreateWindow(dpy, root, 0,
-                       bottom ? DisplayHeight(dpy, screen) - mh : 0, mw, mh, 0,
+       mh = vlist ? mh * (lines+1) : mh;
+#if XINERAMA
+       if(XineramaIsActive(dpy) && (info = XineramaQueryScreens(dpy, &n))) {
+               i = 0;
+               if(n > 1) {
+                       int di;
+                       unsigned int dui;
+                       Window dummy;
+                       if(XQueryPointer(dpy, root, &dummy, &dummy, &x, &y, &di, &di, &dui))
+                               for(i = 0; i < n; i++)
+                                       if(INRECT(x, y, info[i].x_org, info[i].y_org, info[i].width, info[i].height))
+                                               break;
+               }
+               x = info[i].x_org;
+               y = topbar ? info[i].y_org : info[i].y_org + info[i].height - mh;
+               mw = info[i].width;
+               XFree(info);
+       }
+       else
+#endif
+       {
+               x = 0;
+               y = topbar ? 0 : DisplayHeight(dpy, screen) - mh;
+               mw = DisplayWidth(dpy, screen);
+       }
+
+       win = XCreateWindow(dpy, root, x, y, mw, mh, 0,
                        DefaultDepth(dpy, screen), CopyFromParent,
                        DefaultVisual(dpy, screen),
                        CWOverrideRedirect | CWBackPixmap | CWEventMask, &wa);
                        DefaultDepth(dpy, screen), CopyFromParent,
                        DefaultVisual(dpy, screen),
                        CWOverrideRedirect | CWBackPixmap | CWEventMask, &wa);
+
        /* pixmap */
        dc.drawable = XCreatePixmap(dpy, root, mw, mh, DefaultDepth(dpy, screen));
        /* pixmap */
        dc.drawable = XCreatePixmap(dpy, root, mw, mh, DefaultDepth(dpy, screen));
-       dc.gc = XCreateGC(dpy, root, 0, 0);
+       dc.gc = XCreateGC(dpy, root, 0, NULL);
        XSetLineAttributes(dpy, dc.gc, 1, LineSolid, CapButt, JoinMiter);
        if(!dc.font.set)
                XSetFont(dpy, dc.gc, dc.font.xfont->fid);
        if(maxname)
        XSetLineAttributes(dpy, dc.gc, 1, LineSolid, CapButt, JoinMiter);
        if(!dc.font.set)
                XSetFont(dpy, dc.gc, dc.font.xfont->fid);
        if(maxname)
-               cmdw = textw(maxname);
-       if(cmdw > mw / 3)
-               cmdw = mw / 3;
+               cmdw = MIN(textw(maxname), mw / 3);
        if(prompt)
        if(prompt)
-               promptw = textw(prompt);
-       if(promptw > mw / 5)
-               promptw = mw / 5;
+               promptw = MIN(textw(prompt), mw / 5);
        text[0] = 0;
        match(text);
        XMapRaised(dpy, win);
        text[0] = 0;
        match(text);
        XMapRaised(dpy, win);
-       drawmenu();
-       XSync(dpy, False);
+}
 
 
-       /* main event loop */
-       while(running && !XNextEvent(dpy, &ev))
-               switch (ev.type) {
-               default:        /* ignore all crap */
-                       break;
-               case KeyPress:
-                       kpress(&ev.xkey);
-                       break;
-               case Expose:
-                       if(ev.xexpose.count == 0)
-                               drawmenu();
-                       break;
+int
+textnw(const char *text, unsigned int len) {
+       XRectangle r;
+
+       if(dc.font.set) {
+               XmbTextExtents(dc.font.set, text, len, NULL, &r);
+               return r.width;
+       }
+       return XTextWidth(dc.font.xfont, text, len);
+}
+
+int
+textw(const char *text) {
+       return textnw(text, strlen(text)) + dc.font.height;
+}
+
+int
+main(int argc, char *argv[]) {
+       unsigned int i;
+       Bool topbar = True;
+
+       /* command line args */
+       for(i = 1; i < argc; i++)
+               if(!strcmp(argv[i], "-i")) {
+                       fstrncmp = strncasecmp;
+                       fstrstr = cistrstr;
+               }
+               else if(!strcmp(argv[i], "-b"))
+                       topbar = False;
+               else if(!strcmp(argv[i], "-e")) {
+                       if(++i < argc) root = atoi(argv[i]);
+               }
+               else if(!strcmp(argv[i], "-l")) {
+                       vlist = True;
+                       calcoffsets = calcoffsetsv;
+                       if(++i < argc) lines = atoi(argv[i]);
+               }
+               else if(!strcmp(argv[i], "-fn")) {
+                       if(++i < argc) font = argv[i];
+               }
+               else if(!strcmp(argv[i], "-nb")) {
+                       if(++i < argc) normbgcolor = argv[i];
                }
                }
+               else if(!strcmp(argv[i], "-nf")) {
+                       if(++i < argc) normfgcolor = argv[i];
+               }
+               else if(!strcmp(argv[i], "-p")) {
+                       if(++i < argc) prompt = argv[i];
+               }
+               else if(!strcmp(argv[i], "-sb")) {
+                       if(++i < argc) selbgcolor = argv[i];
+               }
+               else if(!strcmp(argv[i], "-sf")) {
+                       if(++i < argc) selfgcolor = argv[i];
+               }
+               else if(!strcmp(argv[i], "-v"))
+                       eprint("dmenu-"VERSION", © 2006-2010 dmenu engineers, see LICENSE for details\n");
+               else
+                       eprint("usage: dmenu [-i] [-b] [-l <lines>] [-fn <font>] [-nb <color>] [-nf <color>]\n"
+                              "             [-p <prompt>] [-sb <color>] [-sf <color>] [-v]\n");
+       if(!setlocale(LC_CTYPE, "") || !XSupportsLocale())
+               fprintf(stderr, "warning: no locale support\n");
+       if(!(dpy = XOpenDisplay(NULL)))
+               eprint("dmenu: cannot open display\n");
+       screen = DefaultScreen(dpy);
+       if(!root)
+               root = RootWindow(dpy, screen);
 
 
-       /* cleanup */
-       while(allitems) {
-               itm = allitems->next;
-               free(allitems->text);
-               free(allitems);
-               allitems = itm;
+       if(isatty(STDIN_FILENO)) {
+               readstdin();
+               running = grabkeyboard();
        }
        }
-       if(dc.font.set)
-               XFreeFontSet(dpy, dc.font.set);
-       else
-               XFreeFont(dpy, dc.font.xfont);
-       XFreePixmap(dpy, dc.drawable);
-       XFreeGC(dpy, dc.gc);
-       XDestroyWindow(dpy, win);
-       XUngrabKeyboard(dpy, CurrentTime);
+       else { /* prevent keypress loss */
+               running = grabkeyboard();
+               readstdin();
+       }
+
+       setup(topbar);
+       drawmenu();
+       XSync(dpy, False);
+       run();
+       cleanup();
        XCloseDisplay(dpy);
        return ret;
 }
        XCloseDisplay(dpy);
        return ret;
 }