new directory structure

1 files changed, 955 insertions, 0 deletions

diff --git a/utils/nsxiv/main.c b/utils/nsxiv/main.c
new file mode 100644
index 0000000..976bd5f
--- /dev/null
+++ b/utils/nsxiv/main.c
@@ -0,0 +1,955 @@
+/* Copyright 2011-2020 Bert Muennich
+ * Copyright 2021-2022 nsxiv contributors
+ *
+ * This file is a part of nsxiv.
+ *
+ * nsxiv is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published
+ * by the Free Software Foundation; either version 2 of the License,
+ * or (at your option) any later version.
+ *
+ * nsxiv is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with nsxiv.  If not, see <http://www.gnu.org/licenses/>.
+ */
+
+#include "nsxiv.h"
+#define _MAPPINGS_CONFIG
+#include "commands.h"
+#include "config.h"
+
+#include <stdlib.h>
+#include <string.h>
+#include <fcntl.h>
+#include <unistd.h>
+#include <errno.h>
+#include <locale.h>
+#include <signal.h>
+#include <poll.h>
+#include <sys/stat.h>
+#include <sys/wait.h>
+#include <time.h>
+#include <X11/keysym.h>
+#include <X11/XF86keysym.h>
+
+#define MODMASK(mask) ((mask) & USED_MODMASK)
+#define BAR_SEP "  "
+
+typedef struct {
+	struct timeval when;
+	bool active;
+	timeout_f handler;
+} timeout_t;
+
+typedef struct {
+	int err;
+	char *cmd;
+} extcmd_t;
+
+/* these are not declared in nsxiv.h, as it causes too many -Wshadow warnings */
+arl_t arl;
+img_t img;
+tns_t tns;
+win_t win;
+
+appmode_t mode;
+const XButtonEvent *xbutton_ev;
+
+fileinfo_t *files;
+int filecnt, fileidx;
+int alternate;
+int markcnt;
+int markidx;
+
+int prefix;
+static bool extprefix;
+
+static bool resized = false;
+
+static struct {
+	extcmd_t f, ft;
+	int fd;
+	unsigned int i, lastsep;
+	pid_t pid;
+} info;
+
+static struct {
+	extcmd_t f;
+	bool warned;
+} keyhandler;
+
+static struct {
+	extcmd_t f;
+} wintitle;
+
+static timeout_t timeouts[] = {
+	{ { 0, 0 }, false, redraw       },
+	{ { 0, 0 }, false, reset_cursor },
+	{ { 0, 0 }, false, animate      },
+	{ { 0, 0 }, false, slideshow    },
+	{ { 0, 0 }, false, clear_resize },
+};
+
+/**************************
+  function implementations
+ **************************/
+static void cleanup(void)
+{
+	img_close(&img, false);
+	arl_cleanup(&arl);
+	tns_free(&tns);
+	win_close(&win);
+}
+
+static bool xgetline(char **lineptr, size_t *n)
+{
+	ssize_t len = getdelim(lineptr, n, options->using_null ? '\0' : '\n', stdin);
+	if (!options->using_null && len > 0 && (*lineptr)[len-1] == '\n')
+		(*lineptr)[len-1] = '\0';
+	return len > 0;
+}
+
+static void check_add_file(char *filename, bool given)
+{
+	char *path;
+
+	if (*filename == '\0')
+		return;
+
+	if (access(filename, R_OK) < 0 ||
+	    (path = realpath(filename, NULL)) == NULL)
+	{
+		if (given)
+			error(0, errno, "%s", filename);
+		return;
+	}
+
+	if (fileidx == filecnt) {
+		filecnt *= 2;
+		files = erealloc(files, filecnt * sizeof(*files));
+		memset(&files[filecnt/2], 0, filecnt/2 * sizeof(*files));
+	}
+
+	files[fileidx].name = estrdup(filename);
+	files[fileidx].path = path;
+	if (given)
+		files[fileidx].flags |= FF_WARN;
+	fileidx++;
+}
+
+void remove_file(int n, bool manual)
+{
+	if (n < 0 || n >= filecnt)
+		return;
+
+	if (filecnt == 1) {
+		if (!manual)
+			fprintf(stderr, "nsxiv: no more files to display, aborting\n");
+		exit(manual ? EXIT_SUCCESS : EXIT_FAILURE);
+	}
+	if (files[n].flags & FF_MARK)
+		markcnt--;
+
+	if (files[n].path != files[n].name)
+		free((void*) files[n].path);
+	free((void*) files[n].name);
+
+	if (n + 1 < filecnt) {
+		if (tns.thumbs != NULL) {
+			if (tns.thumbs[n].im != NULL) {
+				imlib_context_set_image(tns.thumbs[n].im);
+				imlib_free_image_and_decache();
+			}
+			memmove(tns.thumbs + n, tns.thumbs + n + 1, (filecnt - n - 1) *
+			        sizeof(*tns.thumbs));
+			memset(tns.thumbs + filecnt - 1, 0, sizeof(*tns.thumbs));
+		}
+		memmove(files + n, files + n + 1, (filecnt - n - 1) * sizeof(*files));
+	}
+	filecnt--;
+	if (fileidx > n || fileidx == filecnt)
+		fileidx--;
+	if (alternate > n || alternate == filecnt)
+		alternate--;
+	if (markidx > n || markidx == filecnt)
+		markidx--;
+}
+
+void set_timeout(timeout_f handler, int time, bool overwrite)
+{
+	unsigned int i;
+
+	for (i = 0; i < ARRLEN(timeouts); i++) {
+		if (timeouts[i].handler == handler) {
+			if (!timeouts[i].active || overwrite) {
+				gettimeofday(&timeouts[i].when, 0);
+				TV_ADD_MSEC(&timeouts[i].when, time);
+				timeouts[i].active = true;
+			}
+			return;
+		}
+	}
+}
+
+void reset_timeout(timeout_f handler)
+{
+	unsigned int i;
+
+	for (i = 0; i < ARRLEN(timeouts); i++) {
+		if (timeouts[i].handler == handler) {
+			timeouts[i].active = false;
+			return;
+		}
+	}
+}
+
+static bool check_timeouts(struct timeval *t)
+{
+	int i = 0, tdiff, tmin = -1;
+	struct timeval now;
+
+	while (i < ARRLEN(timeouts)) {
+		if (timeouts[i].active) {
+			gettimeofday(&now, 0);
+			tdiff = TV_DIFF(&timeouts[i].when, &now);
+			if (tdiff <= 0) {
+				timeouts[i].active = false;
+				if (timeouts[i].handler != NULL)
+					timeouts[i].handler();
+				i = tmin = -1;
+			} else if (tmin < 0 || tdiff < tmin) {
+				tmin = tdiff;
+			}
+		}
+		i++;
+	}
+	if (tmin > 0 && t != NULL)
+		TV_SET_MSEC(t, tmin);
+	return tmin > 0;
+}
+
+size_t get_win_title(unsigned char *buf, int len, bool init)
+{
+	char *argv[8];
+	spawn_t pfd;
+	char w[12] = "", h[12] = "", z[12] = "", fidx[12], fcnt[12];
+	ssize_t n = -1;
+
+	if (buf == NULL || len <= 0)
+		return 0;
+
+	if (init) {
+		n = snprintf((char *)buf, len, "%s", options->res_name != NULL ?
+		             options->res_name : "nsxiv");
+	} else if (!wintitle.f.err) {
+		if (mode == MODE_IMAGE) {
+			snprintf(w, ARRLEN(w), "%d", img.w);
+			snprintf(h, ARRLEN(h), "%d", img.h);
+			snprintf(z, ARRLEN(z), "%d", (int)(img.zoom * 100));
+		}
+		snprintf(fidx, ARRLEN(fidx), "%d", fileidx+1);
+		snprintf(fcnt, ARRLEN(fcnt), "%d", filecnt);
+		construct_argv(argv, ARRLEN(argv), wintitle.f.cmd, files[fileidx].path,
+		               fidx, fcnt, w, h, z, NULL);
+		pfd = spawn(wintitle.f.cmd, argv, X_READ);
+		if (pfd.readfd >= 0) {
+			if ((n = read(pfd.readfd, buf, len-1)) > 0)
+				buf[n] = '\0';
+			close(pfd.readfd);
+		}
+	}
+
+	return MAX(0, n);
+}
+
+void close_info(void)
+{
+	if (info.fd != -1) {
+		kill(info.pid, SIGTERM);
+		close(info.fd);
+		info.fd = -1;
+	}
+}
+
+void open_info(void)
+{
+	spawn_t pfd;
+	char w[12] = "", h[12] = "";
+	char *argv[6];
+	char *cmd = mode == MODE_IMAGE ? info.f.cmd : info.ft.cmd;
+	bool ferr = mode == MODE_IMAGE ? info.f.err : info.ft.err;
+
+	if (ferr || info.fd >= 0 || win.bar.h == 0)
+		return;
+	win.bar.l.buf[0] = '\0';
+	if (mode == MODE_IMAGE) {
+		snprintf(w, sizeof(w), "%d", img.w);
+		snprintf(h, sizeof(h), "%d", img.h);
+	}
+	construct_argv(argv, ARRLEN(argv), cmd, files[fileidx].name, w, h,
+	               files[fileidx].path, NULL);
+	pfd = spawn(cmd, argv, X_READ);
+	if (pfd.readfd >= 0) {
+		fcntl(pfd.readfd, F_SETFL, O_NONBLOCK);
+		info.fd = pfd.readfd;
+		info.i = info.lastsep = 0;
+		info.pid = pfd.pid;
+	}
+}
+
+static void read_info(void)
+{
+	ssize_t i, n;
+	char buf[BAR_L_LEN];
+
+	while (true) {
+		n = read(info.fd, buf, sizeof(buf));
+		if (n < 0 && errno == EAGAIN)
+			return;
+		else if (n == 0)
+			goto end;
+		for (i = 0; i < n; i++) {
+			if (buf[i] == '\n') {
+				if (info.lastsep == 0) {
+					win.bar.l.buf[info.i++] = ' ';
+					info.lastsep = 1;
+				}
+			} else {
+				win.bar.l.buf[info.i++] = buf[i];
+				info.lastsep = 0;
+			}
+			if (info.i + 1 == win.bar.l.size)
+				goto end;
+		}
+	}
+end:
+	info.i -= info.lastsep;
+	win.bar.l.buf[info.i] = '\0';
+	win_draw(&win);
+	close_info();
+}
+
+void load_image(int new)
+{
+	bool prev = new < fileidx;
+	static int current;
+
+	if (new < 0 || new >= filecnt)
+		return;
+
+	if (win.xwin != None)
+		win_set_cursor(&win, CURSOR_WATCH);
+	reset_timeout(slideshow);
+
+	if (new != current)
+		alternate = current;
+
+	img_close(&img, false);
+	while (!img_load(&img, &files[new])) {
+		remove_file(new, false);
+		if (new >= filecnt)
+			new = filecnt - 1;
+		else if (new > 0 && prev)
+			new--;
+	}
+	files[new].flags &= ~FF_WARN;
+	fileidx = current = new;
+
+	close_info();
+	open_info();
+	arl_setup(&arl, files[fileidx].path);
+
+	if (img.multi.cnt > 0 && img.multi.animate)
+		set_timeout(animate, img.multi.frames[img.multi.sel].delay, true);
+	else
+		reset_timeout(animate);
+}
+
+bool mark_image(int n, bool on)
+{
+	markidx = n;
+	if (!!(files[n].flags & FF_MARK) != on) {
+		files[n].flags ^= FF_MARK;
+		markcnt += on ? 1 : -1;
+		if (mode == MODE_THUMB)
+			tns_mark(&tns, n, on);
+		return true;
+	}
+	return false;
+}
+
+static void bar_put(win_bar_t *bar, const char *fmt, ...)
+{
+	size_t len = bar->size - (bar->p - bar->buf), n;
+	va_list ap;
+
+	va_start(ap, fmt);
+	n = vsnprintf(bar->p, len, fmt, ap);
+	bar->p += MIN(len, n);
+	va_end(ap);
+}
+
+static void update_info(void)
+{
+	unsigned int i, fn, fw;
+	const char *mark;
+	win_bar_t *l = &win.bar.l, *r = &win.bar.r;
+
+	/* update bar contents */
+	if (win.bar.h == 0)
+		return;
+	for (fw = 0, i = filecnt; i > 0; fw++, i /= 10);
+	mark = files[fileidx].flags & FF_MARK ? "* " : "";
+	l->p = l->buf;
+	r->p = r->buf;
+	if (mode == MODE_THUMB) {
+		if (tns.loadnext < tns.end)
+			bar_put(l, "Loading... %0*d", fw, tns.loadnext + 1);
+		else if (tns.initnext < filecnt)
+			bar_put(l, "Caching... %0*d", fw, tns.initnext + 1);
+		else if (info.ft.err)
+			strncpy(l->buf, files[fileidx].name, l->size);
+		bar_put(r, "%s%0*d/%d", mark, fw, fileidx + 1, filecnt);
+	} else {
+		bar_put(r, "%s", mark);
+		if (img.ss.on) {
+			if (img.ss.delay % 10 != 0)
+				bar_put(r, "%2.1fs" BAR_SEP, (float)img.ss.delay / 10);
+			else
+				bar_put(r, "%ds" BAR_SEP, img.ss.delay / 10);
+		}
+		if (img.gamma)
+			bar_put(r, "G%+d" BAR_SEP, img.gamma);
+		bar_put(r, "%3d%%" BAR_SEP, (int) (img.zoom * 100.0));
+		if (img.multi.cnt > 0) {
+			for (fn = 0, i = img.multi.cnt; i > 0; fn++, i /= 10);
+			bar_put(r, "%0*d/%d" BAR_SEP, fn, img.multi.sel + 1, img.multi.cnt);
+		}
+		bar_put(r, "%0*d/%d", fw, fileidx + 1, filecnt);
+		if (info.f.err)
+			strncpy(l->buf, files[fileidx].name, l->size);
+	}
+}
+
+int nav_button(void)
+{
+	int x, y, nw;
+
+	if (NAV_WIDTH == 0)
+		return 1;
+
+	win_cursor_pos(&win, &x, &y);
+	nw = NAV_IS_REL ? win.w * NAV_WIDTH / 100 : NAV_WIDTH;
+	nw = MIN(nw, (win.w + 1) / 2);
+
+	if (x < nw)
+		return 0;
+	else if (x < win.w-nw)
+		return 1;
+	else
+		return 2;
+}
+
+void redraw(void)
+{
+	int t;
+
+	if (mode == MODE_IMAGE) {
+		img_render(&img);
+		if (img.ss.on) {
+			t = img.ss.delay * 100;
+			if (img.multi.cnt > 0 && img.multi.animate)
+				t = MAX(t, img.multi.length);
+			set_timeout(slideshow, t, false);
+		}
+	} else {
+		tns_render(&tns);
+	}
+	update_info();
+	win_set_title(&win, false);
+	win_draw(&win);
+	reset_timeout(redraw);
+	reset_cursor();
+}
+
+void reset_cursor(void)
+{
+	int c;
+	unsigned int i;
+	cursor_t cursor = CURSOR_NONE;
+
+	if (mode == MODE_IMAGE) {
+		for (i = 0; i < ARRLEN(timeouts); i++) {
+			if (timeouts[i].handler == reset_cursor) {
+				if (timeouts[i].active) {
+					c = nav_button();
+					c = MAX(fileidx > 0 ? 0 : 1, c);
+					c = MIN(fileidx + 1 < filecnt ? 2 : 1, c);
+					cursor = imgcursor[c];
+				}
+				break;
+			}
+		}
+	} else {
+		if (tns.loadnext < tns.end || tns.initnext < filecnt)
+			cursor = CURSOR_WATCH;
+		else
+			cursor = CURSOR_ARROW;
+	}
+	win_set_cursor(&win, cursor);
+}
+
+void animate(void)
+{
+	if (img_frame_animate(&img)) {
+		set_timeout(animate, img.multi.frames[img.multi.sel].delay, true);
+		redraw();
+	}
+}
+
+void slideshow(void)
+{
+	load_image(fileidx + 1 < filecnt ? fileidx + 1 : 0);
+	redraw();
+}
+
+void clear_resize(void)
+{
+	resized = false;
+}
+
+static Bool is_input_ev(Display *dpy, XEvent *ev, XPointer arg)
+{
+	return ev->type == ButtonPress || ev->type == KeyPress;
+}
+
+void handle_key_handler(bool init)
+{
+	extprefix = init;
+	if (win.bar.h == 0)
+		return;
+	if (init) {
+		close_info();
+		snprintf(win.bar.l.buf, win.bar.l.size, "Getting key handler input "
+		         "(%s to abort)...", XKeysymToString(KEYHANDLER_ABORT));
+	} else { /* abort */
+		open_info();
+		update_info();
+	}
+	win_draw(&win);
+}
+
+static bool run_key_handler(const char *key, unsigned int mask)
+{
+	FILE *pfs;
+	bool marked = mode == MODE_THUMB && markcnt > 0;
+	bool changed = false;
+	int f, i;
+	int fcnt = marked ? markcnt : 1;
+	char kstr[32];
+	struct stat *oldst, st;
+	XEvent dump;
+	char *argv[3];
+	spawn_t pfd;
+
+	if (keyhandler.f.err) {
+		if (!keyhandler.warned) {
+			error(0, keyhandler.f.err, "%s", keyhandler.f.cmd);
+			keyhandler.warned = true;
+		}
+		return false;
+	}
+	if (key == NULL)
+		return false;
+
+	close_info();
+	strncpy(win.bar.l.buf, "Running key handler...", win.bar.l.size);
+	win_draw(&win);
+	win_set_cursor(&win, CURSOR_WATCH);
+	setenv("NSXIV_USING_NULL", options->using_null ? "1" : "0", 1);
+
+	snprintf(kstr, sizeof(kstr), "%s%s%s%s",
+	         mask & ControlMask ? "C-" : "",
+	         mask & Mod1Mask    ? "M-" : "",
+	         mask & ShiftMask   ? "S-" : "", key);
+	construct_argv(argv, ARRLEN(argv), keyhandler.f.cmd, kstr, NULL);
+	pfd = spawn(keyhandler.f.cmd, argv, X_WRITE);
+	if (pfd.writefd < 0)
+		return false;
+	if ((pfs = fdopen(pfd.writefd, "w")) == NULL) {
+		close(pfd.writefd);
+		error(0, errno, "open pipe");
+		return false;
+	}
+
+	oldst = emalloc(fcnt * sizeof(*oldst));
+	for (f = i = 0; f < fcnt; i++) {
+		if ((marked && (files[i].flags & FF_MARK)) || (!marked && i == fileidx)) {
+			stat(files[i].path, &oldst[f]);
+			fprintf(pfs, "%s%c", files[i].name, options->using_null ? '\0' : '\n');
+			f++;
+		}
+	}
+	fclose(pfs);
+	while (waitpid(pfd.pid, NULL, 0) == -1 && errno == EINTR);
+
+	for (f = i = 0; f < fcnt; i++) {
+		if ((marked && (files[i].flags & FF_MARK)) || (!marked && i == fileidx)) {
+			if (stat(files[i].path, &st) != 0 ||
+			    memcmp(&oldst[f].st_mtime, &st.st_mtime, sizeof(st.st_mtime)) != 0)
+			{
+				if (tns.thumbs != NULL) {
+					tns_unload(&tns, i);
+					tns.loadnext = MIN(tns.loadnext, i);
+				}
+				changed = true;
+			}
+			f++;
+		}
+	}
+	/* drop user input events that occurred while running the key handler */
+	while (XCheckIfEvent(win.env.dpy, &dump, is_input_ev, NULL));
+
+	if (mode == MODE_IMAGE) {
+		if (changed) {
+			img_close(&img, true);
+			load_image(fileidx);
+		} else {
+			open_info();
+		}
+	}
+	free(oldst);
+	reset_cursor();
+	return true;
+}
+
+static bool process_bindings(const keymap_t *bindings, unsigned int len, KeySym ksym_or_button,
+                             unsigned int state, unsigned int implicit_mod)
+{
+	unsigned int i;
+	bool dirty = false;
+
+	for (i = 0; i < len; i++) {
+		if (bindings[i].ksym_or_button == ksym_or_button &&
+		    MODMASK(bindings[i].mask | implicit_mod) == MODMASK(state) &&
+		    bindings[i].cmd.func &&
+		    (bindings[i].cmd.mode == MODE_ALL || bindings[i].cmd.mode == mode))
+		{
+			if (bindings[i].cmd.func(bindings[i].arg))
+				dirty = true;
+		}
+	}
+	return dirty;
+}
+
+static void on_keypress(XKeyEvent *kev)
+{
+	unsigned int sh = 0;
+	KeySym ksym, shksym;
+	char dummy, key;
+	bool dirty = false;
+
+	XLookupString(kev, &key, 1, &ksym, NULL);
+
+	if (kev->state & ShiftMask) {
+		kev->state &= ~ShiftMask;
+		XLookupString(kev, &dummy, 1, &shksym, NULL);
+		kev->state |= ShiftMask;
+		if (ksym != shksym)
+			sh = ShiftMask;
+	}
+	if (IsModifierKey(ksym))
+		return;
+	if (extprefix && ksym == KEYHANDLER_ABORT && MODMASK(kev->state) == 0) {
+		handle_key_handler(false);
+	} else if (extprefix) {
+		if ((dirty = run_key_handler(XKeysymToString(ksym), kev->state & ~sh)))
+			extprefix = false;
+		else
+			handle_key_handler(false);
+	} else if (key >= '0' && key <= '9') {
+		/* number prefix for commands */
+		prefix = prefix * 10 + (int) (key - '0');
+		return;
+	} else {
+		dirty = process_bindings(keys, ARRLEN(keys), ksym, kev->state, sh);
+	}
+	if (dirty)
+		redraw();
+	prefix = 0;
+}
+
+static void on_buttonpress(const XButtonEvent *bev)
+{
+	bool dirty = false;
+
+	if (mode == MODE_IMAGE) {
+		set_timeout(reset_cursor, TO_CURSOR_HIDE, true);
+		reset_cursor();
+		dirty = process_bindings(buttons_img, ARRLEN(buttons_img), bev->button, bev->state, 0);
+	} else { /* thumbnail mode */
+		dirty = process_bindings(buttons_tns, ARRLEN(buttons_tns), bev->button, bev->state, 0);
+	}
+	if (dirty)
+		redraw();
+	prefix = 0;
+}
+
+static void run(void)
+{
+	enum { FD_X, FD_INFO, FD_ARL, FD_CNT };
+	struct pollfd pfd[FD_CNT];
+	struct timeval timeout = {0};
+	const struct timespec ten_ms = {0, 10000000};
+	bool discard, init_thumb, load_thumb, to_set;
+	XEvent ev, nextev;
+
+	xbutton_ev = &ev.xbutton;
+	while (true) {
+		to_set = check_timeouts(&timeout);
+		init_thumb = mode == MODE_THUMB && tns.initnext < filecnt;
+		load_thumb = mode == MODE_THUMB && tns.loadnext < tns.end;
+
+		if ((init_thumb || load_thumb || to_set || info.fd != -1 ||
+		     arl.fd != -1) && XPending(win.env.dpy) == 0)
+		{
+			if (load_thumb) {
+				set_timeout(redraw, TO_REDRAW_THUMBS, false);
+				if (!tns_load(&tns, tns.loadnext, false, false)) {
+					remove_file(tns.loadnext, false);
+					tns.dirty = true;
+				}
+				if (tns.loadnext >= tns.end)
+					redraw();
+			} else if (init_thumb) {
+				set_timeout(redraw, TO_REDRAW_THUMBS, false);
+				if (!tns_load(&tns, tns.initnext, false, true))
+					remove_file(tns.initnext, false);
+			} else {
+				pfd[FD_X].fd = ConnectionNumber(win.env.dpy);
+				pfd[FD_INFO].fd = info.fd;
+				pfd[FD_ARL].fd = arl.fd;
+				pfd[FD_X].events = pfd[FD_INFO].events = pfd[FD_ARL].events = POLLIN;
+
+				if (poll(pfd, ARRLEN(pfd), to_set ? TV_TO_MS(&timeout) : -1) < 0)
+					continue;
+				if (pfd[FD_INFO].revents & POLLIN)
+					read_info();
+				if (pfd[FD_ARL].revents & POLLIN) {
+					if (arl_handle(&arl)) {
+						/* when too fast, imlib2 can't load the image */
+						nanosleep(&ten_ms, NULL);
+						img_close(&img, true);
+						load_image(fileidx);
+						redraw();
+					}
+				}
+			}
+			continue;
+		}
+
+		do {
+			XNextEvent(win.env.dpy, &ev);
+			discard = false;
+			if (XEventsQueued(win.env.dpy, QueuedAlready) > 0) {
+				XPeekEvent(win.env.dpy, &nextev);
+				switch (ev.type) {
+					case ConfigureNotify:
+					case MotionNotify:
+						discard = ev.type == nextev.type;
+						break;
+					case KeyPress:
+						discard = (nextev.type == KeyPress || nextev.type == KeyRelease)
+						          && ev.xkey.keycode == nextev.xkey.keycode;
+						break;
+				}
+			}
+		} while (discard);
+
+		switch (ev.type) {
+			/* handle events */
+			case ButtonPress:
+				on_buttonpress(&ev.xbutton);
+				break;
+			case ClientMessage:
+				if ((Atom) ev.xclient.data.l[0] == atoms[ATOM_WM_DELETE_WINDOW])
+					cg_quit(EXIT_SUCCESS);
+				break;
+			case DestroyNotify:
+				cg_quit(EXIT_FAILURE);
+				break;
+			case ConfigureNotify:
+				if (win_configure(&win, &ev.xconfigure)) {
+					if (mode == MODE_IMAGE) {
+						img.dirty = true;
+						img.checkpan = true;
+					} else {
+						tns.dirty = true;
+					}
+					if (!resized) {
+						redraw();
+						set_timeout(clear_resize, TO_REDRAW_RESIZE, false);
+						resized = true;
+					} else {
+						set_timeout(redraw, TO_REDRAW_RESIZE, false);
+					}
+				}
+				break;
+			case KeyPress:
+				on_keypress(&ev.xkey);
+				break;
+			case MotionNotify:
+				if (mode == MODE_IMAGE) {
+					set_timeout(reset_cursor, TO_CURSOR_HIDE, true);
+					reset_cursor();
+				}
+				break;
+		}
+	}
+}
+
+static int fncmp(const void *a, const void *b)
+{
+	return strcoll(((fileinfo_t*) a)->name, ((fileinfo_t*) b)->name);
+}
+
+static void sigchld(int sig)
+{
+	while (waitpid(-1, NULL, WNOHANG) > 0);
+}
+
+static void setup_signal(int sig, void (*handler)(int sig))
+{
+	struct sigaction sa;
+
+	sa.sa_handler = handler;
+	sigemptyset(&sa.sa_mask);
+	sa.sa_flags = SA_RESTART | SA_NOCLDSTOP;
+	if (sigaction(sig, &sa, 0) == -1)
+		error(EXIT_FAILURE, errno, "signal %d", sig);
+}
+
+int main(int argc, char *argv[])
+{
+	int i, start;
+	size_t n;
+	char *filename;
+	const char *homedir, *dsuffix = "";
+	struct stat fstats;
+	r_dir_t dir;
+
+	setup_signal(SIGCHLD, sigchld);
+	setup_signal(SIGPIPE, SIG_IGN);
+
+	setlocale(LC_COLLATE, "");
+
+	parse_options(argc, argv);
+
+	if (options->clean_cache) {
+		tns_init(&tns, NULL, NULL, NULL, NULL);
+		tns_clean_cache();
+		exit(EXIT_SUCCESS);
+	}
+
+	if (options->filecnt == 0 && !options->from_stdin) {
+		print_usage();
+		exit(EXIT_FAILURE);
+	}
+
+	if (options->recursive || options->from_stdin)
+		filecnt = 1024;
+	else
+		filecnt = options->filecnt;
+
+	files = ecalloc(filecnt, sizeof(*files));
+	fileidx = 0;
+
+	if (options->from_stdin) {
+		n = 0;
+		filename = NULL;
+		while (xgetline(&filename, &n))
+			check_add_file(filename, true);
+		free(filename);
+	}
+
+	for (i = 0; i < options->filecnt; i++) {
+		filename = options->filenames[i];
+
+		if (stat(filename, &fstats) < 0) {
+			error(0, errno, "%s", filename);
+			continue;
+		}
+		if (!S_ISDIR(fstats.st_mode)) {
+			check_add_file(filename, true);
+		} else {
+			if (r_opendir(&dir, filename, options->recursive) < 0) {
+				error(0, errno, "%s", filename);
+				continue;
+			}
+			start = fileidx;
+			while ((filename = r_readdir(&dir, true)) != NULL) {
+				check_add_file(filename, false);
+				free((void*) filename);
+			}
+			r_closedir(&dir);
+			if (fileidx - start > 1)
+				qsort(files + start, fileidx - start, sizeof(fileinfo_t), fncmp);
+		}
+	}
+
+	if (fileidx == 0)
+		error(EXIT_FAILURE, 0, "No valid image file given, aborting");
+
+	filecnt = fileidx;
+	fileidx = options->startnum < filecnt ? options->startnum : 0;
+
+	win_init(&win);
+	img_init(&img, &win);
+	arl_init(&arl);
+
+	if ((homedir = getenv("XDG_CONFIG_HOME")) == NULL || homedir[0] == '\0') {
+		homedir = getenv("HOME");
+		dsuffix = "/.config";
+	}
+	if (homedir != NULL) {
+		extcmd_t *cmd[] = { &info.f, &info.ft, &keyhandler.f, &wintitle.f };
+		const char *name[] = { "image-info", "thumb-info", "key-handler", "win-title" };
+		const char *s = "/nsxiv/exec/";
+
+		for (i = 0; i < ARRLEN(cmd); i++) {
+			n = strlen(homedir) + strlen(dsuffix) + strlen(s) + strlen(name[i]) + 1;
+			cmd[i]->cmd = emalloc(n);
+			snprintf(cmd[i]->cmd, n, "%s%s%s%s", homedir, dsuffix, s, name[i]);
+			if (access(cmd[i]->cmd, X_OK) != 0)
+				cmd[i]->err = errno;
+		}
+	} else {
+		error(0, 0, "Exec directory not found");
+	}
+	info.fd = -1;
+
+	if (options->thumb_mode) {
+		mode = MODE_THUMB;
+		tns_init(&tns, files, &filecnt, &fileidx, &win);
+		while (!tns_load(&tns, fileidx, false, false))
+			remove_file(fileidx, false);
+	} else {
+		mode = MODE_IMAGE;
+		tns.thumbs = NULL;
+		load_image(fileidx);
+	}
+	win_open(&win);
+	win_set_cursor(&win, CURSOR_WATCH);
+
+	atexit(cleanup);
+
+	set_timeout(redraw, 25, false);
+
+	run();
+
+	return 0;
+}