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nsxivmain.c

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1/* Copyright 2011-2013 Bert Muennich
2 *
3 * This file is part of sxiv.
4 *
5 * sxiv is free software; you can redistribute it and/or modify
6 * it under the terms of the GNU General Public License as published
7 * by the Free Software Foundation; either version 2 of the License,
8 * or (at your option) any later version.
9 *
10 * sxiv is distributed in the hope that it will be useful,
11 * but WITHOUT ANY WARRANTY; without even the implied warranty of
12 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
13 * GNU General Public License for more details.
14 *
15 * You should have received a copy of the GNU General Public License
16 * along with sxiv. If not, see <http://www.gnu.org/licenses/>.
17 */
18
19#define _POSIX_C_SOURCE 200112L
20#define _MAPPINGS_CONFIG
21
22#include <stdlib.h>
23#include <stdio.h>
24#include <string.h>
25#include <fcntl.h>
26#include <unistd.h>
27#include <errno.h>
28#include <signal.h>
29#include <sys/select.h>
30#include <sys/stat.h>
31#include <sys/time.h>
32#include <sys/wait.h>
33#include <X11/keysym.h>
34#include <X11/XF86keysym.h>
35
36#include "types.h"
37#include "commands.h"
38#include "image.h"
39#include "options.h"
40#include "thumbs.h"
41#include "util.h"
42#include "window.h"
43#include "config.h"
44
45enum {
46 FILENAME_CNT = 1024,
47 TITLE_LEN = 256
48};
49
50typedef struct {
51 const char *name;
52 char *cmd;
53} exec_t;
54
55typedef struct {
56 struct timeval when;
57 bool active;
58 timeout_f handler;
59} timeout_t;
60
61/* timeout handler functions: */
62void redraw(void);
63void reset_cursor(void);
64void animate(void);
65void slideshow(void);
66void clear_resize(void);
67
68appmode_t mode;
69img_t img;
70tns_t tns;
71win_t win;
72
73fileinfo_t *files;
74int filecnt, fileidx;
75int alternate;
76int markcnt;
77
78int prefix;
79bool extprefix;
80
81bool resized = false;
82
83struct {
84 char *cmd;
85 int fd;
86 unsigned int i, lastsep;
87 bool open;
88} info;
89
90struct {
91 char *cmd;
92 bool warned;
93} keyhandler;
94
95timeout_t timeouts[] = {
96 { { 0, 0 }, false, redraw },
97 { { 0, 0 }, false, reset_cursor },
98 { { 0, 0 }, false, animate },
99 { { 0, 0 }, false, slideshow },
100 { { 0, 0 }, false, clear_resize },
101};
102
103void cleanup(void)
104{
105 static bool in = false;
106
107 if (!in) {
108 in = true;
109 img_close(&img, false);
110 tns_free(&tns);
111 win_close(&win);
112 }
113}
114
115void check_add_file(char *filename)
116{
117 const char *bn;
118
119 if (filename == NULL || *filename == '\0')
120 return;
121
122 if (access(filename, R_OK) < 0) {
123 warn("could not open file: %s", filename);
124 return;
125 }
126
127 if (fileidx == filecnt) {
128 filecnt *= 2;
129 files = (fileinfo_t*) s_realloc(files, filecnt * sizeof(fileinfo_t));
130 }
131
132#if defined _BSD_SOURCE || defined _XOPEN_SOURCE && \
133 ((_XOPEN_SOURCE - 0) >= 500 || defined _XOPEN_SOURCE_EXTENDED)
134
135 if ((files[fileidx].path = realpath(filename, NULL)) == NULL) {
136 warn("could not get real path of file: %s\n", filename);
137 return;
138 }
139#else
140 if (*filename != '/') {
141 if ((files[fileidx].path = absolute_path(filename)) == NULL) {
142 warn("could not get absolute path of file: %s\n", filename);
143 return;
144 }
145 } else {
146 files[fileidx].path = NULL;
147 }
148#endif
149
150 files[fileidx].loaded = false;
151 files[fileidx].name = s_strdup(filename);
152 if (files[fileidx].path == NULL)
153 files[fileidx].path = files[fileidx].name;
154 if ((bn = strrchr(files[fileidx].name , '/')) != NULL && bn[1] != '\0')
155 files[fileidx].base = ++bn;
156 else
157 files[fileidx].base = files[fileidx].name;
158 fileidx++;
159}
160
161void remove_file(int n, bool manual)
162{
163 if (n < 0 || n >= filecnt)
164 return;
165
166 if (filecnt == 1) {
167 if (!manual)
168 fprintf(stderr, "sxiv: no more files to display, aborting\n");
169 cleanup();
170 exit(manual ? EXIT_SUCCESS : EXIT_FAILURE);
171 }
172 if (files[n].marked)
173 markcnt--;
174
175 if (files[n].path != files[n].name)
176 free((void*) files[n].path);
177 free((void*) files[n].name);
178
179 if (n + 1 < filecnt)
180 memmove(files + n, files + n + 1, (filecnt - n - 1) * sizeof(fileinfo_t));
181 if (n + 1 < tns.cnt) {
182 memmove(tns.thumbs + n, tns.thumbs + n + 1, (tns.cnt - n - 1) *
183 sizeof(thumb_t));
184 memset(tns.thumbs + tns.cnt - 1, 0, sizeof(thumb_t));
185 }
186
187 filecnt--;
188 if (n < tns.cnt)
189 tns.cnt--;
190 if (mode == MODE_THUMB && fileidx >= tns.cnt)
191 fileidx = tns.cnt - 1;
192 if (n < alternate)
193 alternate--;
194}
195
196void set_timeout(timeout_f handler, int time, bool overwrite)
197{
198 int i;
199
200 for (i = 0; i < ARRLEN(timeouts); i++) {
201 if (timeouts[i].handler == handler) {
202 if (!timeouts[i].active || overwrite) {
203 gettimeofday(&timeouts[i].when, 0);
204 TV_ADD_MSEC(&timeouts[i].when, time);
205 timeouts[i].active = true;
206 }
207 return;
208 }
209 }
210}
211
212void reset_timeout(timeout_f handler)
213{
214 int i;
215
216 for (i = 0; i < ARRLEN(timeouts); i++) {
217 if (timeouts[i].handler == handler) {
218 timeouts[i].active = false;
219 return;
220 }
221 }
222}
223
224bool check_timeouts(struct timeval *t)
225{
226 int i = 0, tdiff, tmin = -1;
227 struct timeval now;
228
229 while (i < ARRLEN(timeouts)) {
230 if (timeouts[i].active) {
231 gettimeofday(&now, 0);
232 tdiff = TV_DIFF(&timeouts[i].when, &now);
233 if (tdiff <= 0) {
234 timeouts[i].active = false;
235 if (timeouts[i].handler != NULL)
236 timeouts[i].handler();
237 i = tmin = -1;
238 } else if (tmin < 0 || tdiff < tmin) {
239 tmin = tdiff;
240 }
241 }
242 i++;
243 }
244 if (tmin > 0 && t != NULL)
245 TV_SET_MSEC(t, tmin);
246 return tmin > 0;
247}
248
249void open_info(void)
250{
251 static pid_t pid;
252 int pfd[2];
253
254 if (info.cmd == NULL || info.open || win.bar.h == 0)
255 return;
256 if (info.fd != -1) {
257 close(info.fd);
258 kill(pid, SIGTERM);
259 info.fd = -1;
260 }
261 win.bar.l[0] = '\0';
262
263 if (pipe(pfd) < 0)
264 return;
265 pid = fork();
266 if (pid > 0) {
267 close(pfd[1]);
268 fcntl(pfd[0], F_SETFL, O_NONBLOCK);
269 info.fd = pfd[0];
270 info.i = info.lastsep = 0;
271 info.open = true;
272 } else if (pid == 0) {
273 close(pfd[0]);
274 dup2(pfd[1], 1);
275 execl(info.cmd, info.cmd, files[fileidx].name, NULL);
276 warn("could not exec: %s", info.cmd);
277 exit(EXIT_FAILURE);
278 }
279}
280
281void read_info(void)
282{
283 ssize_t i, n;
284 char buf[BAR_L_LEN];
285
286 while (true) {
287 n = read(info.fd, buf, sizeof(buf));
288 if (n < 0 && errno == EAGAIN)
289 return;
290 else if (n == 0)
291 goto end;
292 for (i = 0; i < n; i++) {
293 if (buf[i] == '\n') {
294 if (info.lastsep == 0) {
295 win.bar.l[info.i++] = ' ';
296 info.lastsep = 1;
297 }
298 } else {
299 win.bar.l[info.i++] = buf[i];
300 info.lastsep = 0;
301 }
302 if (info.i + 1 == sizeof(win.bar.l))
303 goto end;
304 }
305 }
306end:
307 info.i -= info.lastsep;
308 win.bar.l[info.i] = '\0';
309 win_draw(&win);
310 close(info.fd);
311 info.fd = -1;
312 while (waitpid(-1, NULL, WNOHANG) > 0);
313}
314
315void load_image(int new)
316{
317 if (new < 0 || new >= filecnt)
318 return;
319
320 win_set_cursor(&win, CURSOR_WATCH);
321 reset_timeout(slideshow);
322
323 if (new != fileidx)
324 alternate = fileidx;
325
326 img_close(&img, false);
327 while (!img_load(&img, &files[new])) {
328 remove_file(new, false);
329 if (new >= filecnt)
330 new = filecnt - 1;
331 else if (new > 0 && new < fileidx)
332 new--;
333 }
334 files[new].loaded = true;
335 fileidx = new;
336
337 info.open = false;
338 open_info();
339
340 if (img.multi.cnt > 0 && img.multi.animate)
341 set_timeout(animate, img.multi.frames[img.multi.sel].delay, true);
342 else
343 reset_timeout(animate);
344}
345
346void update_info(void)
347{
348 unsigned int i, fn, fw, n;
349 unsigned int llen = sizeof(win.bar.l), rlen = sizeof(win.bar.r);
350 char *lt = win.bar.l, *rt = win.bar.r, title[TITLE_LEN];
351 const char * mark;
352 bool ow_info;
353
354 for (fw = 0, i = filecnt; i > 0; fw++, i /= 10);
355
356 /* update window title */
357 if (mode == MODE_THUMB) {
358 win_set_title(&win, "sxiv");
359 } else {
360 snprintf(title, sizeof(title), "sxiv - %s", files[fileidx].name);
361 win_set_title(&win, title);
362 }
363
364 /* update bar contents */
365 if (win.bar.h == 0)
366 return;
367 mark = files[fileidx].marked ? "* " : "";
368 if (mode == MODE_THUMB) {
369 if (tns.loadnext >= filecnt) {
370 n = snprintf(rt, rlen, "%s%0*d/%d", mark, fw, fileidx + 1, filecnt);
371 ow_info = true;
372 } else {
373 snprintf(lt, llen, "Loading... %0*d/%d", fw, tns.loadnext, filecnt);
374 rt[0] = '\0';
375 ow_info = false;
376 }
377 } else {
378 n = snprintf(rt, rlen, "%s", mark);
379 if (img.ss.on)
380 n += snprintf(rt + n, rlen - n, "%ds | ", img.ss.delay);
381 if (img.gamma != 0)
382 n += snprintf(rt + n, rlen - n, "G%+d | ", img.gamma);
383 n += snprintf(rt + n, rlen - n, "%3d%% | ", (int) (img.zoom * 100.0));
384 if (img.multi.cnt > 0) {
385 for (fn = 0, i = img.multi.cnt; i > 0; fn++, i /= 10);
386 n += snprintf(rt + n, rlen - n, "%0*d/%d | ",
387 fn, img.multi.sel + 1, img.multi.cnt);
388 }
389 n += snprintf(rt + n, rlen - n, "%0*d/%d", fw, fileidx + 1, filecnt);
390 ow_info = info.cmd == NULL;
391 }
392 if (ow_info) {
393 fn = strlen(files[fileidx].name);
394 if (fn < llen &&
395 win_textwidth(files[fileidx].name, fn, true) +
396 win_textwidth(rt, n, true) < win.w)
397 {
398 strncpy(lt, files[fileidx].name, llen);
399 } else {
400 strncpy(lt, files[fileidx].base, llen);
401 }
402 }
403}
404
405void redraw(void)
406{
407 int t;
408
409 if (mode == MODE_IMAGE) {
410 img_render(&img);
411 if (img.ss.on) {
412 t = img.ss.delay * 1000;
413 if (img.multi.cnt > 0 && img.multi.animate)
414 t = MAX(t, img.multi.length);
415 set_timeout(slideshow, t, false);
416 }
417 } else {
418 tns_render(&tns);
419 }
420 update_info();
421 win_draw(&win);
422 reset_timeout(redraw);
423 reset_cursor();
424}
425
426void reset_cursor(void)
427{
428 int i;
429 cursor_t cursor = CURSOR_NONE;
430
431 if (mode == MODE_IMAGE) {
432 for (i = 0; i < ARRLEN(timeouts); i++) {
433 if (timeouts[i].handler == reset_cursor) {
434 if (timeouts[i].active)
435 cursor = CURSOR_ARROW;
436 break;
437 }
438 }
439 } else {
440 if (tns.loadnext < filecnt)
441 cursor = CURSOR_WATCH;
442 else
443 cursor = CURSOR_ARROW;
444 }
445 win_set_cursor(&win, cursor);
446}
447
448void animate(void)
449{
450 if (img_frame_animate(&img, false)) {
451 redraw();
452 set_timeout(animate, img.multi.frames[img.multi.sel].delay, true);
453 }
454}
455
456void slideshow(void)
457{
458 load_image(fileidx + 1 < filecnt ? fileidx + 1 : 0);
459 redraw();
460}
461
462void clear_resize(void)
463{
464 resized = false;
465}
466
467void run_key_handler(const char *key, unsigned int mask)
468{
469 pid_t pid;
470 int i, j, retval, status;
471 int fcnt = mode == MODE_THUMB && markcnt > 0 ? markcnt : 1;
472 bool changed = false;
473 char **args, kstr[32], oldbar[sizeof(win.bar.l)];
474 struct stat *oldst, newst;
475 struct { int fn; struct stat st; } *finfo;
476
477 if (keyhandler.cmd == NULL) {
478 if (!keyhandler.warned) {
479 warn("key handler not installed");
480 keyhandler.warned = true;
481 }
482 return;
483 }
484 if (key == NULL)
485 return;
486
487 finfo = s_malloc(fcnt * sizeof(*finfo));
488 args = s_malloc((fcnt + 3) * sizeof(*args));
489 args[0] = keyhandler.cmd;
490 args[1] = kstr;
491 args[fcnt+2] = NULL;
492 if (mode == MODE_IMAGE || markcnt == 0) {
493 finfo[0].fn = fileidx;
494 stat(files[fileidx].path, &finfo[0].st);
495 args[2] = (char*) files[fileidx].path;
496 } else for (i = j = 0; i < filecnt; i++) {
497 if (files[i].marked) {
498 finfo[j].fn = i;
499 stat(files[i].path, &finfo[j++].st);
500 args[j+1] = (char*) files[i].path;
501 }
502 }
503 snprintf(kstr, sizeof(kstr), "%s%s%s%s",
504 mask & ControlMask ? "C-" : "",
505 mask & Mod1Mask ? "M-" : "",
506 mask & ShiftMask ? "S-" : "", key);
507
508 memcpy(oldbar, win.bar.l, sizeof(win.bar.l));
509 strncpy(win.bar.l, "Running key handler...", sizeof(win.bar.l));
510 win_draw(&win);
511 win_set_cursor(&win, CURSOR_WATCH);
512
513 if ((pid = fork()) == 0) {
514 execv(keyhandler.cmd, args);
515 warn("could not exec key handler");
516 exit(EXIT_FAILURE);
517 } else if (pid < 0) {
518 warn("could not fork key handler");
519 goto end;
520 }
521 waitpid(pid, &status, 0);
522 retval = WEXITSTATUS(status);
523 if (WIFEXITED(status) == 0 || retval != 0)
524 warn("key handler exited with non-zero return value: %d", retval);
525
526 for (i = 0; i < fcnt; i++) {
527 oldst = &finfo[i].st;
528 if (stat(files[finfo[i].fn].path, &newst) != 0 ||
529 memcmp(&oldst->st_mtime, &newst.st_mtime, sizeof(newst.st_mtime)) != 0)
530 {
531 if (tns.thumbs != NULL) {
532 tns.thumbs[finfo[i].fn].loaded = false;
533 tns.loadnext = MIN(tns.loadnext, finfo[i].fn);
534 }
535 changed = true;
536 }
537 }
538end:
539 if (mode == MODE_IMAGE) {
540 if (changed) {
541 img_close(&img, true);
542 load_image(fileidx);
543 } else if (info.cmd != NULL) {
544 memcpy(win.bar.l, oldbar, sizeof(win.bar.l));
545 }
546 }
547 reset_cursor();
548 redraw();
549 free(finfo);
550 free(args);
551}
552
553#define MODMASK(mask) ((mask) & (ShiftMask|ControlMask|Mod1Mask))
554
555void on_keypress(XKeyEvent *kev)
556{
557 int i;
558 unsigned int sh;
559 KeySym ksym, shksym;
560 char key;
561 bool dirty = false;
562
563 if (kev == NULL)
564 return;
565
566 if (kev->state & ShiftMask) {
567 kev->state &= ~ShiftMask;
568 XLookupString(kev, &key, 1, &shksym, NULL);
569 kev->state |= ShiftMask;
570 }
571 XLookupString(kev, &key, 1, &ksym, NULL);
572 sh = (kev->state & ShiftMask) && ksym != shksym ? ShiftMask : 0;
573
574 if (IsModifierKey(ksym))
575 return;
576 if (ksym == XK_Escape && MODMASK(kev->state) == 0) {
577 extprefix = False;
578 } else if (extprefix) {
579 run_key_handler(XKeysymToString(ksym), kev->state & ~sh);
580 extprefix = False;
581 } else if (key >= '0' && key <= '9') {
582 /* number prefix for commands */
583 prefix = prefix * 10 + (int) (key - '0');
584 return;
585 } else for (i = 0; i < ARRLEN(keys); i++) {
586 if (keys[i].ksym == ksym &&
587 MODMASK(keys[i].mask | sh) == MODMASK(kev->state) &&
588 keys[i].cmd >= 0 && keys[i].cmd < CMD_COUNT &&
589 (cmds[keys[i].cmd].mode < 0 || cmds[keys[i].cmd].mode == mode))
590 {
591 if (cmds[keys[i].cmd].func(keys[i].arg))
592 dirty = true;
593 }
594 }
595 if (dirty)
596 redraw();
597 prefix = 0;
598}
599
600void on_buttonpress(XButtonEvent *bev)
601{
602 int i, sel;
603 bool dirty = false;
604 static Time firstclick;
605
606 if (bev == NULL)
607 return;
608
609 if (mode == MODE_IMAGE) {
610 win_set_cursor(&win, CURSOR_ARROW);
611 set_timeout(reset_cursor, TO_CURSOR_HIDE, true);
612
613 for (i = 0; i < ARRLEN(buttons); i++) {
614 if (buttons[i].button == bev->button &&
615 MODMASK(buttons[i].mask) == MODMASK(bev->state) &&
616 buttons[i].cmd >= 0 && buttons[i].cmd < CMD_COUNT &&
617 (cmds[buttons[i].cmd].mode < 0 || cmds[buttons[i].cmd].mode == mode))
618 {
619 if (cmds[buttons[i].cmd].func(buttons[i].arg))
620 dirty = true;
621 }
622 }
623 if (dirty)
624 redraw();
625 } else {
626 /* thumbnail mode (hard-coded) */
627 switch (bev->button) {
628 case Button1:
629 if ((sel = tns_translate(&tns, bev->x, bev->y)) >= 0) {
630 if (sel != fileidx) {
631 tns_highlight(&tns, fileidx, false);
632 tns_highlight(&tns, sel, true);
633 fileidx = sel;
634 firstclick = bev->time;
635 redraw();
636 } else if (bev->time - firstclick <= TO_DOUBLE_CLICK) {
637 mode = MODE_IMAGE;
638 set_timeout(reset_cursor, TO_CURSOR_HIDE, true);
639 load_image(fileidx);
640 redraw();
641 } else {
642 firstclick = bev->time;
643 }
644 }
645 break;
646 case Button3:
647 if ((sel = tns_translate(&tns, bev->x, bev->y)) >= 0) {
648 files[sel].marked = !files[sel].marked;
649 markcnt += files[sel].marked ? 1 : -1;
650 tns_mark(&tns, sel, files[sel].marked);
651 redraw();
652 }
653 break;
654 case Button4:
655 case Button5:
656 if (tns_scroll(&tns, bev->button == Button4 ? DIR_UP : DIR_DOWN,
657 (bev->state & ControlMask) != 0))
658 redraw();
659 break;
660 }
661 }
662 prefix = 0;
663}
664
665void run(void)
666{
667 int xfd;
668 fd_set fds;
669 struct timeval timeout;
670 bool discard, reload, to_set;
671 XEvent ev, nextev;
672
673 set_timeout(redraw, 25, false);
674
675 while (true) {
676 while (mode == MODE_THUMB && tns.loadnext < filecnt &&
677 XPending(win.env.dpy) == 0)
678 {
679 /* load thumbnails */
680 reload = tns.loadnext != tns.cnt;
681 set_timeout(redraw, TO_REDRAW_THUMBS, false);
682 if (tns_load(&tns, tns.loadnext, &files[tns.loadnext], reload)) {
683 if (!reload)
684 tns.cnt++;
685 } else {
686 remove_file(tns.loadnext, false);
687 }
688 while (tns.loadnext < filecnt && tns.thumbs[tns.loadnext].loaded)
689 tns.loadnext++;
690 if (tns.loadnext >= filecnt)
691 redraw();
692 else
693 check_timeouts(NULL);
694 }
695
696 while (XPending(win.env.dpy) == 0
697 && ((to_set = check_timeouts(&timeout)) || info.fd != -1))
698 {
699 /* check for timeouts & input */
700 xfd = ConnectionNumber(win.env.dpy);
701 FD_ZERO(&fds);
702 FD_SET(xfd, &fds);
703 if (info.fd != -1) {
704 FD_SET(info.fd, &fds);
705 xfd = MAX(xfd, info.fd);
706 }
707 select(xfd + 1, &fds, 0, 0, to_set ? &timeout : NULL);
708 if (info.fd != -1 && FD_ISSET(info.fd, &fds))
709 read_info();
710 }
711
712 do {
713 XNextEvent(win.env.dpy, &ev);
714 discard = false;
715 if (XEventsQueued(win.env.dpy, QueuedAlready) > 0) {
716 XPeekEvent(win.env.dpy, &nextev);
717 switch (ev.type) {
718 case ConfigureNotify:
719 discard = ev.type == nextev.type;
720 break;
721 case KeyPress:
722 discard = (nextev.type == KeyPress || nextev.type == KeyRelease)
723 && ev.xkey.keycode == nextev.xkey.keycode;
724 break;
725 }
726 }
727 } while (discard);
728
729 switch (ev.type) {
730 /* handle events */
731 case ButtonPress:
732 on_buttonpress(&ev.xbutton);
733 break;
734 case ClientMessage:
735 if ((Atom) ev.xclient.data.l[0] == atoms[ATOM_WM_DELETE_WINDOW])
736 return;
737 break;
738 case ConfigureNotify:
739 if (win_configure(&win, &ev.xconfigure)) {
740 if (mode == MODE_IMAGE) {
741 img.dirty = true;
742 img.checkpan = true;
743 } else {
744 tns.dirty = true;
745 }
746 if (!resized || win.fullscreen) {
747 redraw();
748 set_timeout(clear_resize, TO_REDRAW_RESIZE, false);
749 resized = true;
750 } else {
751 set_timeout(redraw, TO_REDRAW_RESIZE, false);
752 }
753 }
754 break;
755 case KeyPress:
756 on_keypress(&ev.xkey);
757 break;
758 case MotionNotify:
759 if (mode == MODE_IMAGE) {
760 win_set_cursor(&win, CURSOR_ARROW);
761 set_timeout(reset_cursor, TO_CURSOR_HIDE, true);
762 }
763 break;
764 }
765 }
766}
767
768int fncmp(const void *a, const void *b)
769{
770 return strcoll(((fileinfo_t*) a)->name, ((fileinfo_t*) b)->name);
771}
772
773int main(int argc, char **argv)
774{
775 int i, start;
776 size_t n;
777 ssize_t len;
778 char *filename;
779 const char *homedir, *dsuffix = "";
780 struct stat fstats;
781 r_dir_t dir;
782
783 parse_options(argc, argv);
784
785 if (options->clean_cache) {
786 tns_init(&tns, 0, NULL, NULL);
787 tns_clean_cache(&tns);
788 exit(EXIT_SUCCESS);
789 }
790
791 if (options->filecnt == 0 && !options->from_stdin) {
792 print_usage();
793 exit(EXIT_FAILURE);
794 }
795
796 if (options->recursive || options->from_stdin)
797 filecnt = FILENAME_CNT;
798 else
799 filecnt = options->filecnt;
800
801 files = (fileinfo_t*) s_malloc(filecnt * sizeof(fileinfo_t));
802 fileidx = 0;
803
804 if (options->from_stdin) {
805 filename = NULL;
806 while ((len = get_line(&filename, &n, stdin)) > 0) {
807 if (filename[len-1] == '\n')
808 filename[len-1] = '\0';
809 check_add_file(filename);
810 }
811 if (filename != NULL)
812 free(filename);
813 }
814
815 for (i = 0; i < options->filecnt; i++) {
816 filename = options->filenames[i];
817
818 if (stat(filename, &fstats) < 0) {
819 warn("could not stat file: %s", filename);
820 continue;
821 }
822 if (!S_ISDIR(fstats.st_mode)) {
823 check_add_file(filename);
824 } else {
825 if (!options->recursive) {
826 warn("ignoring directory: %s", filename);
827 continue;
828 }
829 if (r_opendir(&dir, filename) < 0) {
830 warn("could not open directory: %s", filename);
831 continue;
832 }
833 start = fileidx;
834 while ((filename = r_readdir(&dir)) != NULL) {
835 check_add_file(filename);
836 free((void*) filename);
837 }
838 r_closedir(&dir);
839 if (fileidx - start > 1)
840 qsort(files + start, fileidx - start, sizeof(fileinfo_t), fncmp);
841 }
842 }
843
844 if (fileidx == 0) {
845 fprintf(stderr, "sxiv: no valid image file given, aborting\n");
846 exit(EXIT_FAILURE);
847 }
848
849 filecnt = fileidx;
850 fileidx = options->startnum < filecnt ? options->startnum : 0;
851
852 win_init(&win);
853 img_init(&img, &win);
854
855 if ((homedir = getenv("XDG_CONFIG_HOME")) == NULL || homedir[0] == '\0') {
856 homedir = getenv("HOME");
857 dsuffix = "/.config";
858 }
859 if (homedir != NULL) {
860 char **cmd[] = { &info.cmd, &keyhandler.cmd };
861 const char *name[] = { "image-info", "key-handler" };
862
863 for (i = 0; i < ARRLEN(cmd); i++) {
864 len = strlen(homedir) + strlen(dsuffix) + strlen(name[i]) + 12;
865 *cmd[i] = (char*) s_malloc(len);
866 snprintf(*cmd[i], len, "%s%s/sxiv/exec/%s", homedir, dsuffix, name[i]);
867 if (access(*cmd[i], X_OK) != 0) {
868 free(*cmd[i]);
869 *cmd[i] = NULL;
870 }
871 }
872 } else {
873 warn("could not locate exec directory");
874 }
875 info.fd = -1;
876
877 if (options->thumb_mode) {
878 mode = MODE_THUMB;
879 tns_init(&tns, filecnt, &win, &fileidx);
880 while (!tns_load(&tns, 0, &files[0], false))
881 remove_file(0, false);
882 tns.cnt = 1;
883 } else {
884 mode = MODE_IMAGE;
885 tns.thumbs = NULL;
886 load_image(fileidx);
887 }
888
889 win_open(&win);
890 win_set_cursor(&win, CURSOR_WATCH);
891
892 run();
893 cleanup();
894
895 return 0;
896}