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471 lines
9.7 KiB
471 lines
9.7 KiB
/* See LICENSE file for copyright and license details. */
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#include <ctype.h>
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#include <locale.h>
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#include <stdio.h>
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#include <stdlib.h>
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#include <string.h>
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#include <unistd.h>
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#include <X11/keysym.h>
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#include <X11/Xlib.h>
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#include <X11/Xutil.h>
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#include "dmenu.h"
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typedef struct Item Item;
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struct Item {
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char *text;
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Item *next; /* traverses all items */
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Item *left, *right; /* traverses items matching current search pattern */
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};
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/* forward declarations */
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static void appenditem(Item *i, Item **list, Item **last);
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static void calcoffsetsh(void);
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static void calcoffsetsv(void);
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static char *cistrstr(const char *s, const char *sub);
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static void cleanup(void);
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static void dinput(void);
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static void drawmenuh(void);
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static void drawmenuv(void);
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static void match(void);
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static void readstdin(void);
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/* variables */
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static char **argp = NULL;
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static char *maxname = NULL;
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static unsigned int cmdw = 0;
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static unsigned int lines = 0;
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static Item *allitems = NULL; /* first of all items */
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static Item *item = NULL; /* first of pattern matching items */
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static Item *sel = NULL;
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static Item *next = NULL;
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static Item *prev = NULL;
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static Item *curr = NULL;
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static int (*fstrncmp)(const char *, const char *, size_t) = strncmp;
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static char *(*fstrstr)(const char *, const char *) = strstr;
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static void (*calcoffsets)(void) = calcoffsetsh;
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void
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appenditem(Item *i, Item **list, Item **last) {
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if(!(*last))
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*list = i;
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else
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(*last)->right = i;
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i->left = *last;
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i->right = NULL;
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*last = i;
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}
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void
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calcoffsetsh(void) {
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unsigned int w, x;
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w = promptw + cmdw + textw(&dc, "<") + textw(&dc, ">");
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for(x = w, next = curr; next; next = next->right)
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if((x += MIN(textw(&dc, next->text), mw / 3)) > mw)
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break;
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for(x = w, prev = curr; prev && prev->left; prev = prev->left)
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if((x += MIN(textw(&dc, prev->left->text), mw / 3)) > mw)
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break;
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}
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void
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calcoffsetsv(void) {
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unsigned int i;
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next = prev = curr;
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for(i = 0; i < lines && next; i++)
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next = next->right;
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mh = (dc.font.height + 2) * (i + 1);
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for(i = 0; i < lines && prev && prev->left; i++)
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prev = prev->left;
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}
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char *
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cistrstr(const char *s, const char *sub) {
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int c, csub;
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unsigned int len;
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if(!sub)
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return (char *)s;
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if((c = tolower(*sub++)) != '\0') {
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len = strlen(sub);
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do {
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do {
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if((csub = *s++) == '\0')
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return NULL;
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}
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while(tolower(csub) != c);
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}
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while(strncasecmp(s, sub, len) != 0);
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s--;
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}
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return (char *)s;
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}
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void
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cleanup(void) {
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Item *itm;
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while(allitems) {
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itm = allitems->next;
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free(allitems->text);
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free(allitems);
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allitems = itm;
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}
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cleanupdraw(&dc);
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XDestroyWindow(dpy, win);
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XUngrabKeyboard(dpy, CurrentTime);
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XCloseDisplay(dpy);
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}
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void
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dinput(void) {
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cleanup();
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argp[0] = "dinput";
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argp[1] = text;
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execvp("dinput", argp);
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eprint("cannot exec dinput\n");
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}
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void
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drawbar(void) {
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dc.x = 0;
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dc.y = 0;
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dc.w = mw;
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dc.h = mh;
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drawbox(&dc, normcol);
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dc.h = dc.font.height + 2;
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dc.y = topbar ? 0 : mh - dc.h;
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/* print prompt? */
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if(prompt) {
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dc.w = promptw;
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drawtext(&dc, prompt, selcol);
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dc.x += dc.w;
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}
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dc.w = mw - dc.x;
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/* print command */
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if(cmdw && item && lines == 0)
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dc.w = cmdw;
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drawtext(&dc, text, normcol);
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if(lines > 0)
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drawmenuv();
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else if(curr)
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drawmenuh();
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commitdraw(&dc, win);
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}
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void
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drawmenuh(void) {
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unsigned long *col;
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Item *i;
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dc.x += cmdw;
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dc.w = textw(&dc, "<");
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drawtext(&dc, curr->left ? "<" : NULL, normcol);
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dc.x += dc.w;
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for(i = curr; i != next; i = i->right) {
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dc.w = MIN(textw(&dc, i->text), mw / 3);
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col = (sel == i) ? selcol : normcol;
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drawbox(&dc, col);
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drawtext(&dc, i->text, col);
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dc.x += dc.w;
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}
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dc.w = textw(&dc, ">");
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dc.x = mw - dc.w;
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drawtext(&dc, next ? ">" : NULL, normcol);
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}
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void
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drawmenuv(void) {
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Item *i;
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XWindowAttributes wa;
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dc.y = topbar ? dc.h : 0;
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dc.w = mw - dc.x;
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for(i = curr; i != next; i = i->right) {
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drawtext(&dc, i->text, (sel == i) ? selcol : normcol);
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dc.y += dc.h;
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}
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if(!XGetWindowAttributes(dpy, win, &wa))
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eprint("cannot get window attributes");
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XMoveResizeWindow(dpy, win, wa.x, wa.y + (topbar ? 0 : wa.height - mh), mw, mh);
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}
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void
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kpress(XKeyEvent *e) {
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char buf[sizeof text];
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int num;
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unsigned int i, len;
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KeySym ksym;
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len = strlen(text);
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num = XLookupString(e, buf, sizeof buf, &ksym, NULL);
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if(ksym == XK_KP_Enter)
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ksym = XK_Return;
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else if(ksym >= XK_KP_0 && ksym <= XK_KP_9)
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ksym = (ksym - XK_KP_0) + XK_0;
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else if(IsFunctionKey(ksym) || IsKeypadKey(ksym)
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|| IsMiscFunctionKey(ksym) || IsPFKey(ksym)
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|| IsPrivateKeypadKey(ksym))
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return;
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/* first check if a control mask is omitted */
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if(e->state & ControlMask) {
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switch(tolower(ksym)) {
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default:
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return;
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case XK_a:
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ksym = XK_Home;
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break;
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case XK_b:
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ksym = XK_Left;
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break;
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case XK_c:
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ksym = XK_Escape;
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break;
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case XK_e:
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ksym = XK_End;
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break;
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case XK_f:
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ksym = XK_Right;
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break;
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case XK_h:
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ksym = XK_BackSpace;
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break;
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case XK_i:
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ksym = XK_Tab;
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break;
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case XK_j:
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case XK_m:
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ksym = XK_Return;
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break;
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case XK_n:
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ksym = XK_Down;
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break;
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case XK_p:
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ksym = XK_Up;
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break;
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case XK_u:
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text[0] = '\0';
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match();
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break;
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case XK_w:
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if(len == 0)
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return;
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i = len;
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while(i-- > 0 && text[i] == ' ');
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while(i-- > 0 && text[i] != ' ');
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text[++i] = '\0';
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match();
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break;
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}
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}
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switch(ksym) {
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default:
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num = MIN(num, sizeof text);
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if(num && !iscntrl((int) buf[0])) {
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memcpy(text + len, buf, num + 1);
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len += num;
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match();
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}
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break;
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case XK_BackSpace:
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if(len == 0)
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return;
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for(i = 1; len - i > 0 && !IS_UTF8_1ST_CHAR(text[len - i]); i++);
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len -= i;
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text[len] = '\0';
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match();
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break;
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case XK_End:
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while(next) {
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sel = curr = next;
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calcoffsets();
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}
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while(sel && sel->right)
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sel = sel->right;
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break;
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case XK_Escape:
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exit(EXIT_FAILURE);
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case XK_Home:
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sel = curr = item;
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calcoffsets();
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break;
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case XK_Left:
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case XK_Up:
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if(!sel || !sel->left)
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return;
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sel = sel->left;
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if(sel->right == curr) {
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curr = prev;
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calcoffsets();
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}
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break;
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case XK_Next:
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if(!next)
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return;
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sel = curr = next;
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calcoffsets();
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break;
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case XK_Prior:
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if(!prev)
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return;
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sel = curr = prev;
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calcoffsets();
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break;
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case XK_Return:
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if(e->state & ShiftMask)
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dinput();
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fprintf(stdout, "%s", sel ? sel->text : text);
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fflush(stdout);
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exit(EXIT_SUCCESS);
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case XK_Right:
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case XK_Down:
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if(!sel || !sel->right)
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return;
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sel = sel->right;
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if(sel == next) {
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curr = next;
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calcoffsets();
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}
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break;
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case XK_Tab:
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if(sel)
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strncpy(text, sel->text, sizeof text);
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dinput();
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break;
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}
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drawbar();
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}
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void
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match(void) {
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unsigned int len;
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Item *i, *itemend, *lexact, *lprefix, *lsubstr, *exactend, *prefixend, *substrend;
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len = strlen(text);
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item = lexact = lprefix = lsubstr = itemend = exactend = prefixend = substrend = NULL;
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for(i = allitems; i; i = i->next)
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if(!fstrncmp(text, i->text, len + 1))
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appenditem(i, &lexact, &exactend);
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else if(!fstrncmp(text, i->text, len))
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appenditem(i, &lprefix, &prefixend);
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else if(fstrstr(i->text, text))
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appenditem(i, &lsubstr, &substrend);
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if(lexact) {
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item = lexact;
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itemend = exactend;
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}
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if(lprefix) {
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if(itemend) {
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itemend->right = lprefix;
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lprefix->left = itemend;
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}
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else
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item = lprefix;
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itemend = prefixend;
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}
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if(lsubstr) {
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if(itemend) {
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itemend->right = lsubstr;
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lsubstr->left = itemend;
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}
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else
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item = lsubstr;
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}
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curr = prev = next = sel = item;
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calcoffsets();
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}
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void
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readstdin(void) {
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char *p, buf[sizeof text];
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unsigned int len = 0, max = 0;
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Item *i, *new;
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i = NULL;
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while(fgets(buf, sizeof buf, stdin)) {
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len = strlen(buf);
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if(buf[len-1] == '\n')
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buf[--len] = '\0';
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if(!(p = strdup(buf)))
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eprint("cannot strdup %u bytes\n", len);
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if((max = MAX(max, len)) == len)
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maxname = p;
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if(!(new = malloc(sizeof *new)))
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eprint("cannot malloc %u bytes\n", sizeof *new);
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new->next = new->left = new->right = NULL;
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new->text = p;
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if(!i)
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allitems = new;
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else
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i->next = new;
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i = new;
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}
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}
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int
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main(int argc, char *argv[]) {
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unsigned int i;
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/* command line args */
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progname = "dmenu";
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for(i = 1; i < argc; i++)
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if(!strcmp(argv[i], "-i")) {
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fstrncmp = strncasecmp;
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fstrstr = cistrstr;
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}
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else if(!strcmp(argv[i], "-b"))
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topbar = False;
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else if(!strcmp(argv[i], "-l")) {
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if(++i < argc) lines = atoi(argv[i]);
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if(lines > 0)
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calcoffsets = calcoffsetsv;
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}
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else if(!strcmp(argv[i], "-fn")) {
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if(++i < argc) font = argv[i];
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}
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else if(!strcmp(argv[i], "-nb")) {
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if(++i < argc) normbgcolor = argv[i];
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}
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else if(!strcmp(argv[i], "-nf")) {
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if(++i < argc) normfgcolor = argv[i];
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}
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else if(!strcmp(argv[i], "-p")) {
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if(++i < argc) prompt = argv[i];
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}
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else if(!strcmp(argv[i], "-sb")) {
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if(++i < argc) selbgcolor = argv[i];
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}
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else if(!strcmp(argv[i], "-sf")) {
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if(++i < argc) selfgcolor = argv[i];
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}
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else if(!strcmp(argv[i], "-v")) {
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printf("dmenu-"VERSION", © 2006-2010 dmenu engineers, see LICENSE for details\n");
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exit(EXIT_SUCCESS);
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}
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else {
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fputs("usage: dmenu [-i] [-b] [-l <lines>] [-fn <font>] [-nb <color>]\n"
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" [-nf <color>] [-p <prompt>] [-sb <color>] [-sf <color>] [-v]\n", stderr);
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exit(EXIT_FAILURE);
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}
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if(!setlocale(LC_CTYPE, "") || !XSupportsLocale())
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fprintf(stderr, "dmenu: warning: no locale support\n");
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if(!(dpy = XOpenDisplay(NULL)))
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eprint("cannot open display\n");
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if(atexit(&cleanup) != 0)
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eprint("cannot register cleanup\n");
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screen = DefaultScreen(dpy);
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root = RootWindow(dpy, screen);
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if(!(argp = malloc(sizeof *argp * (argc+2))))
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eprint("cannot malloc %u bytes\n", sizeof *argp * (argc+2));
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memcpy(argp + 2, argv + 1, sizeof *argp * argc);
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readstdin();
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grabkeyboard();
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setup(lines);
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if(maxname)
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cmdw = MIN(textw(&dc, maxname), mw / 3);
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match();
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run();
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return 0;
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}
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