code:
/* See LICENSE file for copyright and license details. */
#include <stdio.h>
#include <string.h>

#include "../slstatus.h"
#include "../util.h"

const char *
cat(const char *path)
{
        char *f;
        FILE *fp;

        if (!(fp = fopen(path, "r"))) {
                warn("fopen '%s':", path);
                return NULL;
        }

        f = fgets(buf, sizeof(buf) - 1, fp);
        if (fclose(fp) < 0) {
                warn("fclose '%s':", path);
                return NULL;
        }
        if (!f)
                return NULL;

        if ((f = strrchr(buf, '\n')))
                f[0] = '\0';

        return buf[0] ? buf : NULL;
}


code:
/* See LICENSE file for copyright and license details. */
#include <stdint.h>
#include <stdio.h>
#include <string.h>

#include "../slstatus.h"
#include "../util.h"

#if defined(__linux__)
	#define CPU_FREQ "/sys/devices/system/cpu/cpu0/cpufreq/scaling_cur_freq"

	const char *
	cpu_freq(const char *unused)
	{
		uintmax_t freq;

		/* in kHz */
		if (pscanf(CPU_FREQ, "%ju", &freq) != 1)
			return NULL;

		return fmt_human(freq * 1000, 1000);
	}

	const char *
	cpu_perc(const char *unused)
	{
		static long double a[7];
		long double b[7], sum;

		memcpy(b, a, sizeof(b));
		/* cpu user nice system idle iowait irq softirq */
		if (pscanf("/proc/stat", "%*s %Lf %Lf %Lf %Lf %Lf %Lf %Lf",
		           &a[0], &a[1], &a[2], &a[3], &a[4], &a[5], &a[6])
		    != 7)
			return NULL;

		if (b[0] == 0)
			return NULL;

		sum = (b[0] + b[1] + b[2] + b[3] + b[4] + b[5] + b[6]) -
		      (a[0] + a[1] + a[2] + a[3] + a[4] + a[5] + a[6]);

		if (sum == 0)
			return NULL;

		return bprintf("%d", (int)(100 *
		               ((b[0] + b[1] + b[2] + b[5] + b[6]) -
		                (a[0] + a[1] + a[2] + a[5] + a[6])) / sum));
	}
#elif defined(__OpenBSD__)
	#include <sys/param.h>
	#include <sys/sched.h>
	#include <sys/sysctl.h>

	const char *
	cpu_freq(const char *unused)
	{
		int freq, mib[2];
		size_t size;

		mib[0] = CTL_HW;
		mib[1] = HW_CPUSPEED;

		size = sizeof(freq);

		/* in MHz */
		if (sysctl(mib, 2, &freq, &size, NULL, 0) < 0) {
			warn("sysctl 'HW_CPUSPEED':");
			return NULL;
		}

		return fmt_human(freq * 1E6, 1000);
	}

	const char *
	cpu_perc(const char *unused)
	{
		int mib[2];
		static uintmax_t a[CPUSTATES];
		uintmax_t b[CPUSTATES], sum;
		size_t size;

		mib[0] = CTL_KERN;
		mib[1] = KERN_CPTIME;

		size = sizeof(a);

		memcpy(b, a, sizeof(b));
		if (sysctl(mib, 2, &a, &size, NULL, 0) < 0) {
			warn("sysctl 'KERN_CPTIME':");
			return NULL;
		}
		if (b[0] == 0)
			return NULL;

		sum = (a[CP_USER] + a[CP_NICE] + a[CP_SYS] + a[CP_INTR] + a[CP_IDLE]) -
		      (b[CP_USER] + b[CP_NICE] + b[CP_SYS] + b[CP_INTR] + b[CP_IDLE]);

		if (sum == 0)
			return NULL;

		return bprintf("%d", 100 *
		               ((a[CP_USER] + a[CP_NICE] + a[CP_SYS] +
		                 a[CP_INTR]) -
		                (b[CP_USER] + b[CP_NICE] + b[CP_SYS] +
		                 b[CP_INTR])) / sum);
	}
#elif defined(__FreeBSD__)
	#include <devstat.h>
	#include <sys/param.h>
	#include <sys/sysctl.h>

	const char *
	cpu_freq(const char *unused)
	{
		int freq;
		size_t size;

		size = sizeof(freq);
		/* in MHz */
		if (sysctlbyname("hw.clockrate", &freq, &size, NULL, 0) < 0 || !size) {
			warn("sysctlbyname 'hw.clockrate':");
			return NULL;
		}

		return fmt_human(freq * 1E6, 1000);
	}

	const char *
	cpu_perc(const char *unused)
	{
		size_t size;
		static long a[CPUSTATES];
		long b[CPUSTATES], sum;

		size = sizeof(a);
		memcpy(b, a, sizeof(b));
		if (sysctlbyname("kern.cp_time", &a, &size, NULL, 0) < 0 || !size) {
			warn("sysctlbyname 'kern.cp_time':");
			return NULL;
		}
		if (b[0] == 0)
			return NULL;

		sum = (a[CP_USER] + a[CP_NICE] + a[CP_SYS] + a[CP_INTR] + a[CP_IDLE]) -
		      (b[CP_USER] + b[CP_NICE] + b[CP_SYS] + b[CP_INTR] + b[CP_IDLE]);

		if (sum == 0)
			return NULL;

		return bprintf("%d", 100 *
		               ((a[CP_USER] + a[CP_NICE] + a[CP_SYS] +
		                 a[CP_INTR]) -
		                (b[CP_USER] + b[CP_NICE] + b[CP_SYS] +
		                 b[CP_INTR])) / sum);
	}
#endif

license: mit


code:
/* See LICENSE file for copyright and license details. */
#include <stdio.h>
#include <time.h>

#include "../slstatus.h"
#include "../util.h"

const char *
datetime(const char *fmt)
{
	time_t t;

	t = time(NULL);
	if (!strftime(buf, sizeof(buf), fmt, localtime(&t))) {
		warn("strftime: Result string exceeds buffer size");
		return NULL;
	}

	return buf;
}


code:
/* See LICENSE file for copyright and license details. */
#include <stdio.h>
#include <sys/statvfs.h>

#include "../slstatus.h"
#include "../util.h"

const char *
disk_free(const char *path)
{
	struct statvfs fs;

	if (statvfs(path, &fs) < 0) {
		warn("statvfs '%s':", path);
		return NULL;
	}

	return fmt_human(fs.f_frsize * fs.f_bavail, 1024);
}

const char *
disk_perc(const char *path)
{
	struct statvfs fs;

	if (statvfs(path, &fs) < 0) {
		warn("statvfs '%s':", path);
		return NULL;
	}

	return bprintf("%d", (int)(100 *
	               (1 - ((double)fs.f_bavail / (double)fs.f_blocks))));
}

const char *
disk_total(const char *path)
{
	struct statvfs fs;

	if (statvfs(path, &fs) < 0) {
		warn("statvfs '%s':", path);
		return NULL;
	}

	return fmt_human(fs.f_frsize * fs.f_blocks, 1024);
}

const char *
disk_used(const char *path)
{
	struct statvfs fs;

	if (statvfs(path, &fs) < 0) {
		warn("statvfs '%s':", path);
		return NULL;
	}

	return fmt_human(fs.f_frsize * (fs.f_blocks - fs.f_bfree), 1024);
}


code:
/* See LICENSE file for copyright and license details. */
#include "../slstatus.h"
#if defined(__linux__)
	#include <stdint.h>
	#include <stdio.h>

	#include "../util.h"

	#define ENTROPY_AVAIL "/proc/sys/kernel/random/entropy_avail"

	const char *
	entropy(const char *unused)
	{
		uintmax_t num;

		if (pscanf(ENTROPY_AVAIL, "%ju", &num) != 1)
			return NULL;

		return bprintf("%ju", num);
	}
#elif defined(__OpenBSD__) | defined(__FreeBSD__)
	const char *
	entropy(const char *unused)
	{
		// https://www.unicode.org/charts/PDF/U2200.pdf
		/* Unicode Character 'INFINITY' (U+221E) */
		return "\u221E";
	}
#endif


code:
/* See LICENSE file for copyright and license details. */
#include <stdio.h>
#include <unistd.h>

#include "../slstatus.h"
#include "../util.h"

const char *
hostname(const char *unused)
{
	if (gethostname(buf, sizeof(buf)) < 0) {
		warn("gethostbyname:");
		return NULL;
	}

	return buf;
}


code:
/* See LICENSE file for copyright and license details. */
#include <ifaddrs.h>
#include <netdb.h>
#include <stdio.h>
#include <string.h>
#if defined(__OpenBSD__)
	#include <sys/socket.h>
	#include <sys/types.h>
#elif defined(__FreeBSD__)
	#include <netinet/in.h>
	#include <sys/socket.h>
#endif

#include "../slstatus.h"
#include "../util.h"

static const char *
ip(const char *interface, unsigned short sa_family)
{
	struct ifaddrs *ifaddr, *ifa;
	int s;
	char host[NI_MAXHOST];

	if (getifaddrs(&ifaddr) < 0) {
		warn("getifaddrs:");
		return NULL;
	}

	for (ifa = ifaddr; ifa != NULL; ifa = ifa->ifa_next) {
		if (!ifa->ifa_addr)
			continue;

		s = getnameinfo(ifa->ifa_addr, sizeof(struct sockaddr_in6),
		                host, NI_MAXHOST, NULL, 0, NI_NUMERICHOST);
		if (!strcmp(ifa->ifa_name, interface) &&
		    (ifa->ifa_addr->sa_family == sa_family)) {
			freeifaddrs(ifaddr);
			if (s != 0) {
				warn("getnameinfo: %s", gai_strerror(s));
				return NULL;
			}
			return bprintf("%s", host);
		}
	}

	freeifaddrs(ifaddr);

	return NULL;
}

const char *
ipv4(const char *interface)
{
	return ip(interface, AF_INET);
}

const char *
ipv6(const char *interface)
{
	return ip(interface, AF_INET6);
}


code:
/* See LICENSE file for copyright and license details. */
#include <stdio.h>
#include <sys/utsname.h>

#include "../slstatus.h"
#include "../util.h"

const char *
kernel_release(const char *unused)
{
	struct utsname udata;

	if (uname(&udata) < 0) {
		warn("uname:");
		return NULL;
	}

	return bprintf("%s", udata.release);
}


code:
/* See LICENSE file for copyright and license details. */
#include <ctype.h>
#include <stdio.h>
#include <string.h>
#include <X11/Xlib.h>

#include "../slstatus.h"
#include "../util.h"

/*
 * fmt consists of uppercase or lowercase 'c' for caps lock and/or 'n' for num
 * lock, each optionally followed by '?', in the order of indicators desired.
 * If followed by '?', the letter with case preserved is included in the output
 * if the corresponding indicator is on.  Otherwise, the letter is always
 * included, lowercase when off and uppercase when on.
 */
const char *
keyboard_indicators(const char *fmt)
{
	Display *dpy;
	XKeyboardState state;
	size_t fmtlen, i, n;
	int togglecase, isset;
	char key;

	if (!(dpy = XOpenDisplay(NULL))) {
		warn("XOpenDisplay: Failed to open display");
		return NULL;
	}
	XGetKeyboardControl(dpy, &state);
	XCloseDisplay(dpy);

	fmtlen = strnlen(fmt, 4);
	for (i = n = 0; i < fmtlen; i++) {
		key = tolower(fmt[i]);
		if (key != 'c' && key != 'n')
			continue;

		togglecase = (i + 1 >= fmtlen || fmt[i + 1] != '?');
		isset = (state.led_mask & (1 << (key == 'n')));

		if (togglecase)
			buf[n++] = isset ? toupper(key) : key;
		else if (isset)
			buf[n++] = fmt[i];
	}

	buf[n] = 0;
	return buf;
}


code:
/* See LICENSE file for copyright and license details. */
#include <ctype.h>
#include <stdlib.h>
#include <string.h>
#include <X11/XKBlib.h>
#include <X11/Xlib.h>

#include "../slstatus.h"
#include "../util.h"

static int
valid_layout_or_variant(char *sym)
{
	size_t i;
	/* invalid symbols from xkb rules config */
	static const char *invalid[] = { "evdev", "inet", "pc", "base" };

	for (i = 0; i < LEN(invalid); i++)
		if (!strncmp(sym, invalid[i], strlen(invalid[i])))
			return 0;

	return 1;
}

static char *
get_layout(char *syms, int grp_num)
{
	char *tok, *layout;
	int grp;

	layout = NULL;
	tok = strtok(syms, "+:");
	for (grp = 0; tok && grp <= grp_num; tok = strtok(NULL, "+:")) {
		if (!valid_layout_or_variant(tok)) {
			continue;
		} else if (strlen(tok) == 1 && isdigit(tok[0])) {
			/* ignore :2, :3, :4 (additional layout groups) */
			continue;
		}
		layout = tok;
		grp++;
	}

	return layout;
}

const char *
keymap(const char *unused)
{
	Display *dpy;
	XkbDescRec *desc;
	XkbStateRec state;
	char *symbols;
	const char *layout;

	layout = NULL;

	if (!(dpy = XOpenDisplay(NULL))) {
		warn("XOpenDisplay: Failed to open display");
		return NULL;
	}
	if (!(desc = XkbAllocKeyboard())) {
		warn("XkbAllocKeyboard: Failed to allocate keyboard");
		goto end;
	}
	if (XkbGetNames(dpy, XkbSymbolsNameMask, desc)) {
		warn("XkbGetNames: Failed to retrieve key symbols");
		goto end;
	}
	if (XkbGetState(dpy, XkbUseCoreKbd, &state)) {
		warn("XkbGetState: Failed to retrieve keyboard state");
		goto end;
	}
	if (!(symbols = XGetAtomName(dpy, desc->names->symbols))) {
		warn("XGetAtomName: Failed to get atom name");
		goto end;
	}
	layout = bprintf("%s", get_layout(symbols, state.group));
	XFree(symbols);
end:
	XkbFreeKeyboard(desc, XkbSymbolsNameMask, 1);
	if (XCloseDisplay(dpy))
		warn("XCloseDisplay: Failed to close display");

	return layout;
}


code:
/* See LICENSE file for copyright and license details. */
#include <stdio.h>
#include <stdlib.h>

#include "../slstatus.h"
#include "../util.h"

const char *
load_avg(const char *unused)
{
	double avgs[3];

	if (getloadavg(avgs, 3) < 0) {
		warn("getloadavg: Failed to obtain load average");
		return NULL;
	}

	return bprintf("%.2f %.2f %.2f", avgs[0], avgs[1], avgs[2]);
}


code:
/* See LICENSE file for copyright and license details. */
#include <limits.h>
#include <stdio.h>

#include "../slstatus.h"
#include "../util.h"

#if defined(__linux__)
	#include <stdint.h>

	#define NET_RX_BYTES "/sys/class/net/%s/statistics/rx_bytes"
	#define NET_TX_BYTES "/sys/class/net/%s/statistics/tx_bytes"

	const char *
	netspeed_rx(const char *interface)
	{
		uintmax_t oldrxbytes;
		static uintmax_t rxbytes;
		extern const unsigned int interval;
		char path[PATH_MAX];

		oldrxbytes = rxbytes;

		if (esnprintf(path, sizeof(path), NET_RX_BYTES, interface) < 0)
			return NULL;
		if (pscanf(path, "%ju", &rxbytes) != 1)
			return NULL;
		if (oldrxbytes == 0)
			return NULL;

		return fmt_human((rxbytes - oldrxbytes) * 1000 / interval,
		                 1024);
	}

	const char *
	netspeed_tx(const char *interface)
	{
		uintmax_t oldtxbytes;
		static uintmax_t txbytes;
		extern const unsigned int interval;
		char path[PATH_MAX];

		oldtxbytes = txbytes;

		if (esnprintf(path, sizeof(path), NET_TX_BYTES, interface) < 0)
			return NULL;
		if (pscanf(path, "%ju", &txbytes) != 1)
			return NULL;
		if (oldtxbytes == 0)
			return NULL;

		return fmt_human((txbytes - oldtxbytes) * 1000 / interval,
		                 1024);
	}
#elif defined(__OpenBSD__) | defined(__FreeBSD__)
	#include <ifaddrs.h>
	#include <net/if.h>
	#include <string.h>
	#include <sys/types.h>
	#include <sys/socket.h>

	const char *
	netspeed_rx(const char *interface)
	{
		struct ifaddrs *ifal, *ifa;
		struct if_data *ifd;
		uintmax_t oldrxbytes;
		static uintmax_t rxbytes;
		extern const unsigned int interval;
		int if_ok = 0;

		oldrxbytes = rxbytes;

		if (getifaddrs(&ifal) < 0) {
			warn("getifaddrs failed");
			return NULL;
		}
		rxbytes = 0;
		for (ifa = ifal; ifa; ifa = ifa->ifa_next)
			if (!strcmp(ifa->ifa_name, interface) &&
			   (ifd = (struct if_data *)ifa->ifa_data))
				rxbytes += ifd->ifi_ibytes, if_ok = 1;

		freeifaddrs(ifal);
		if (!if_ok) {
			warn("reading 'if_data' failed");
			return NULL;
		}
		if (oldrxbytes == 0)
			return NULL;

		return fmt_human((rxbytes - oldrxbytes) * 1000 / interval,
		                 1024);
	}

	const char *
	netspeed_tx(const char *interface)
	{
		struct ifaddrs *ifal, *ifa;
		struct if_data *ifd;
		uintmax_t oldtxbytes;
		static uintmax_t txbytes;
		extern const unsigned int interval;
		int if_ok = 0;

		oldtxbytes = txbytes;

		if (getifaddrs(&ifal) < 0) {
			warn("getifaddrs failed");
			return NULL;
		}
		txbytes = 0;
		for (ifa = ifal; ifa; ifa = ifa->ifa_next)
			if (!strcmp(ifa->ifa_name, interface) &&
			   (ifd = (struct if_data *)ifa->ifa_data))
				txbytes += ifd->ifi_obytes, if_ok = 1;

		freeifaddrs(ifal);
		if (!if_ok) {
			warn("reading 'if_data' failed");
			return NULL;
		}
		if (oldtxbytes == 0)
			return NULL;

		return fmt_human((txbytes - oldtxbytes) * 1000 / interval,
		                 1024);
	}
#endif


code:
/* See LICENSE file for copyright and license details. */
#include <dirent.h>
#include <stdio.h>
#include <string.h>

#include "../slstatus.h"
#include "../util.h"

const char *
num_files(const char *path)
{
	struct dirent *dp;
	DIR *dir;
	int num;

	if (!(dir = opendir(path))) {
		warn("opendir '%s':", path);
		return NULL;
	}

	num = 0;
	while ((dp = readdir(dir))) {
		if (!strcmp(dp->d_name, ".") || !strcmp(dp->d_name, ".."))
			continue; /* skip self and parent */

		num++;
	}

	closedir(dir);

	return bprintf("%d", num);
}


code:
/* See LICENSE file for copyright and license details. */
#include <stdio.h>

#include "../slstatus.h"
#include "../util.h"

#if defined(__linux__)
	#include <stdint.h>

	const char *
	ram_free(const char *unused)
	{
		uintmax_t free;

		if (pscanf("/proc/meminfo",
		           "MemTotal: %ju kB\n"
		           "MemFree: %ju kB\n"
		           "MemAvailable: %ju kB\n",
		           &free, &free, &free) != 3)
			return NULL;

		return fmt_human(free * 1024, 1024);
	}

	const char *
	ram_perc(const char *unused)
	{
		uintmax_t total, free, buffers, cached;
		int percent;

		if (pscanf("/proc/meminfo",
		           "MemTotal: %ju kB\n"
		           "MemFree: %ju kB\n"
		           "MemAvailable: %ju kB\n"
		           "Buffers: %ju kB\n"
		           "Cached: %ju kB\n",
		           &total, &free, &buffers, &buffers, &cached) != 5)
			return NULL;

		if (total == 0)
			return NULL;

		percent = 100 * ((total - free) - (buffers + cached)) / total;
		return bprintf("%d", percent);
	}

	const char *
	ram_total(const char *unused)
	{
		uintmax_t total;

		if (pscanf("/proc/meminfo", "MemTotal: %ju kB\n", &total)
		    != 1)
			return NULL;

		return fmt_human(total * 1024, 1024);
	}

	const char *
	ram_used(const char *unused)
	{
		uintmax_t total, free, buffers, cached, used;

		if (pscanf("/proc/meminfo",
		           "MemTotal: %ju kB\n"
		           "MemFree: %ju kB\n"
		           "MemAvailable: %ju kB\n"
		           "Buffers: %ju kB\n"
		           "Cached: %ju kB\n",
		           &total, &free, &buffers, &buffers, &cached) != 5)
			return NULL;

		used = (total - free - buffers - cached);
		return fmt_human(used * 1024, 1024);
	}
#elif defined(__OpenBSD__)
	#include <stdlib.h>
	#include <sys/sysctl.h>
	#include <sys/types.h>
	#include <unistd.h>

	#define LOG1024 10
	#define pagetok(size, pageshift) (size_t)(size << (pageshift - LOG1024))

	inline int
	load_uvmexp(struct uvmexp *uvmexp)
	{
		int uvmexp_mib[] = {CTL_VM, VM_UVMEXP};
		size_t size;

		size = sizeof(*uvmexp);

		if (sysctl(uvmexp_mib, 2, uvmexp, &size, NULL, 0) >= 0)
			return 1;

		return 0;
	}

	const char *
	ram_free(const char *unused)
	{
		struct uvmexp uvmexp;
		int free_pages;

		if (!load_uvmexp(&uvmexp))
			return NULL;

		free_pages = uvmexp.npages - uvmexp.active;
		return fmt_human(pagetok(free_pages, uvmexp.pageshift) *
				 1024, 1024);
	}

	const char *
	ram_perc(const char *unused)
	{
		struct uvmexp uvmexp;
		int percent;

		if (!load_uvmexp(&uvmexp))
			return NULL;

		percent = uvmexp.active * 100 / uvmexp.npages;
		return bprintf("%d", percent);
	}

	const char *
	ram_total(const char *unused)
	{
		struct uvmexp uvmexp;

		if (!load_uvmexp(&uvmexp))
			return NULL;

		return fmt_human(pagetok(uvmexp.npages,
					 uvmexp.pageshift) * 1024, 1024);
	}

	const char *
	ram_used(const char *unused)
	{
		struct uvmexp uvmexp;

		if (!load_uvmexp(&uvmexp))
			return NULL;

		return fmt_human(pagetok(uvmexp.active,
					 uvmexp.pageshift) * 1024, 1024);
	}
#elif defined(__FreeBSD__)
	#include <sys/sysctl.h>
	#include <sys/vmmeter.h>
	#include <unistd.h>
	#include <vm/vm_param.h>

	const char *
	ram_free(const char *unused) {
		struct vmtotal vm_stats;
		int mib[] = {CTL_VM, VM_TOTAL};
		size_t len;

		len = sizeof(struct vmtotal);
		if (sysctl(mib, 2, &vm_stats, &len, NULL, 0) < 0
		    || !len)
			return NULL;

		return fmt_human(vm_stats.t_free * getpagesize(), 1024);
	}

	const char *
	ram_total(const char *unused) {
		unsigned int npages;
		size_t len;

		len = sizeof(npages);
		if (sysctlbyname("vm.stats.vm.v_page_count",
		                 &npages, &len, NULL, 0) < 0 || !len)
			return NULL;

		return fmt_human(npages * getpagesize(), 1024);
	}

	const char *
	ram_perc(const char *unused) {
		unsigned int npages;
		unsigned int active;
		size_t len;

		len = sizeof(npages);
		if (sysctlbyname("vm.stats.vm.v_page_count",
		                 &npages, &len, NULL, 0) < 0 || !len)
			return NULL;

		if (sysctlbyname("vm.stats.vm.v_active_count",
		                 &active, &len, NULL, 0) < 0 || !len)
			return NULL;

		return bprintf("%d", active * 100 / npages);
	}

	const char *
	ram_used(const char *unused) {
		unsigned int active;
		size_t len;

		len = sizeof(active);
		if (sysctlbyname("vm.stats.vm.v_active_count",
		                 &active, &len, NULL, 0) < 0 || !len)
			return NULL;

		return fmt_human(active * getpagesize(), 1024);
	}
#endif


code:
/* See LICENSE file for copyright and license details. */
#include <stdio.h>
#include <string.h>

#include "../slstatus.h"
#include "../util.h"

const char *
run_command(const char *cmd)
{
	char *p;
	FILE *fp;

	if (!(fp = popen(cmd, "r"))) {
		warn("popen '%s':", cmd);
		return NULL;
	}

	p = fgets(buf, sizeof(buf) - 1, fp);
	if (pclose(fp) < 0) {
		warn("pclose '%s':", cmd);
		return NULL;
	}
	if (!p)
		return NULL;

	if ((p = strrchr(buf, '\n')))
		p[0] = '\0';

	return buf[0] ? buf : NULL;
}


code:
/* See LICENSE file for copyright and license details. */
#include <stdint.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>

#include "../slstatus.h"
#include "../util.h"

#if defined(__linux__)
	static int
	get_swap_info(long *s_total, long *s_free, long *s_cached)
	{
		FILE *fp;
		struct {
			const char *name;
			const size_t len;
			long *var;
		} ent[] = {
			{ "SwapTotal",  sizeof("SwapTotal") - 1,  s_total  },
			{ "SwapFree",   sizeof("SwapFree") - 1,   s_free   },
			{ "SwapCached", sizeof("SwapCached") - 1, s_cached },
		};
		size_t line_len = 0, i, left;
		char *line = NULL;

		/* get number of fields we want to extract */
		for (i = 0, left = 0; i < LEN(ent); i++)
			if (ent[i].var)
				left++;

		if (!(fp = fopen("/proc/meminfo", "r"))) {
			warn("fopen '/proc/meminfo':");
			return 1;
		}

		/* read file line by line and extract field information */
		while (left > 0 && getline(&line, &line_len, fp) >= 0) {
			for (i = 0; i < LEN(ent); i++) {
				if (ent[i].var &&
				    !strncmp(line, ent[i].name, ent[i].len)) {
					sscanf(line + ent[i].len + 1,
					       "%ld kB\n", ent[i].var);
					left--;
					break;
				}
			}
		}
		free(line);
		if (ferror(fp)) {
			warn("getline '/proc/meminfo':");
			return 1;
		}

		fclose(fp);
		return 0;
	}

	const char *
	swap_free(const char *unused)
	{
		long free;

		if (get_swap_info(NULL, &free, NULL))
			return NULL;

		return fmt_human(free * 1024, 1024);
	}

	const char *
	swap_perc(const char *unused)
	{
		long total, free, cached;

		if (get_swap_info(&total, &free, &cached) || total == 0)
			return NULL;

		return bprintf("%d", 100 * (total - free - cached) / total);
	}

	const char *
	swap_total(const char *unused)
	{
		long total;

		if (get_swap_info(&total, NULL, NULL))
			return NULL;

		return fmt_human(total * 1024, 1024);
	}

	const char *
	swap_used(const char *unused)
	{
		long total, free, cached;

		if (get_swap_info(&total, &free, &cached))
			return NULL;

		return fmt_human((total - free - cached) * 1024, 1024);
	}
#elif defined(__OpenBSD__)
	#include <stdlib.h>
	#include <sys/swap.h>
	#include <sys/types.h>
	#include <unistd.h>

	static int
	getstats(int *total, int *used)
	{
		struct swapent *sep, *fsep;
		int rnswap, nswap, i;

		if ((nswap = swapctl(SWAP_NSWAP, 0, 0)) < 1) {
			warn("swaptctl 'SWAP_NSWAP':");
			return 1;
		}
		if (!(fsep = sep = calloc(nswap, sizeof(*sep)))) {
			warn("calloc 'nswap':");
			return 1;
		}
		if ((rnswap = swapctl(SWAP_STATS, (void *)sep, nswap)) < 0) {
			warn("swapctl 'SWAP_STATA':");
			return 1;
		}
		if (nswap != rnswap) {
			warn("getstats: SWAP_STATS != SWAP_NSWAP");
			return 1;
		}

		*total = 0;
		*used = 0;

		for (i = 0; i < rnswap; i++) {
			*total += sep->se_nblks >> 1;
			*used += sep->se_inuse >> 1;
		}

		free(fsep);

		return 0;
	}

	const char *
	swap_free(const char *unused)
	{
		int total, used;

		if (getstats(&total, &used))
			return NULL;

		return fmt_human((total - used) * 1024, 1024);
	}

	const char *
	swap_perc(const char *unused)
	{
		int total, used;

		if (getstats(&total, &used))
			return NULL;

		if (total == 0)
			return NULL;

		return bprintf("%d", 100 * used / total);
	}

	const char *
	swap_total(const char *unused)
	{
		int total, used;

		if (getstats(&total, &used))
			return NULL;

		return fmt_human(total * 1024, 1024);
	}

	const char *
	swap_used(const char *unused)
	{
		int total, used;

		if (getstats(&total, &used))
			return NULL;

		return fmt_human(used * 1024, 1024);
	}
#elif defined(__FreeBSD__)
	#include <fcntl.h>
	#include <kvm.h>
	#include <stdlib.h>
	#include <sys/types.h>
	#include <unistd.h>

	static int getswapinfo(struct kvm_swap *swap_info, size_t size)
	{
		kvm_t *kd;

		kd = kvm_openfiles(NULL, "/dev/null", NULL, 0, NULL);
		if (kd == NULL) {
			warn("kvm_openfiles '/dev/null':");
			return 0;
		}

		if (kvm_getswapinfo(kd, swap_info, size, 0 /* Unused flags */) < 0) {
			warn("kvm_getswapinfo:");
			kvm_close(kd);
			return 0;
		}

		kvm_close(kd);
		return 1;
	}

	const char *
	swap_free(const char *unused)
	{
		struct kvm_swap swap_info[1];
		long used, total;

		if (!getswapinfo(swap_info, 1))
			return NULL;

		total = swap_info[0].ksw_total;
		used = swap_info[0].ksw_used;

		return fmt_human((total - used) * getpagesize(), 1024);
	}

	const char *
	swap_perc(const char *unused)
	{
		struct kvm_swap swap_info[1];
		long used, total;

		if (!getswapinfo(swap_info, 1))
			return NULL;

		total = swap_info[0].ksw_total;
		used = swap_info[0].ksw_used;

		return bprintf("%d", used * 100 / total);
	}

	const char *
	swap_total(const char *unused)
	{
		struct kvm_swap swap_info[1];
		long total;

		if (!getswapinfo(swap_info, 1))
			return NULL;

		total = swap_info[0].ksw_total;

		return fmt_human(total * getpagesize(), 1024);
	}

	const char *
	swap_used(const char *unused)
	{
		struct kvm_swap swap_info[1];
		long used;

		if (!getswapinfo(swap_info, 1))
			return NULL;

		used = swap_info[0].ksw_used;

		return fmt_human(used * getpagesize(), 1024);
	}
#endif


code:
/* See LICENSE file for copyright and license details. */
#include <stddef.h>

#include "../slstatus.h"
#include "../util.h"

#if defined(__linux__)
	#include <stdint.h>

	const char *
	temp(const char *file)
	{
		uintmax_t temp;

		if (pscanf(file, "%ju", &temp) != 1)
			return NULL;

		return bprintf("%ju", temp / 1000);
	}
#elif defined(__OpenBSD__)
	#include <stdio.h>
	#include <sys/time.h> /* before <sys/sensors.h> for struct timeval */
	#include <sys/sensors.h>
	#include <sys/sysctl.h>

	const char *
	temp(const char *unused)
	{
		int mib[5];
		size_t size;
		struct sensor temp;

		mib[0] = CTL_HW;
		mib[1] = HW_SENSORS;
		mib[2] = 0; /* cpu0 */
		mib[3] = SENSOR_TEMP;
		mib[4] = 0; /* temp0 */

		size = sizeof(temp);

		if (sysctl(mib, 5, &temp, &size, NULL, 0) < 0) {
			warn("sysctl 'SENSOR_TEMP':");
			return NULL;
		}

		/* kelvin to celsius */
		return bprintf("%d", (int)((float)(temp.value-273150000) / 1E6));
	}
#elif defined(__FreeBSD__)
	#include <stdio.h>
	#include <stdlib.h>
	#include <sys/sysctl.h>

	#define ACPI_TEMP "hw.acpi.thermal.%s.temperature"

	const char *
	temp(const char *zone)
	{
		char buf[256];
		int temp;
		size_t len;

		len = sizeof(temp);
		snprintf(buf, sizeof(buf), ACPI_TEMP, zone);
		if (sysctlbyname(buf, &temp, &len, NULL, 0) < 0
				|| !len)
			return NULL;

		/* kelvin to decimal celcius */
		return bprintf("%d.%d", (temp - 2731) / 10, abs((temp - 2731) % 10));
	}
#endif


code:
/* See LICENSE file for copyright and license details. */
#include <stdint.h>
#include <stdio.h>
#include <time.h>

#include "../slstatus.h"
#include "../util.h"

#if defined(CLOCK_BOOTTIME)
	#define UPTIME_FLAG CLOCK_BOOTTIME
#elif defined(CLOCK_UPTIME)
	#define UPTIME_FLAG CLOCK_UPTIME
#else
	#define UPTIME_FLAG CLOCK_MONOTONIC
#endif

const char *
uptime(const char *unused)
{
	char warn_buf[256];
	uintmax_t h, m;
	struct timespec uptime;

	if (clock_gettime(UPTIME_FLAG, &uptime) < 0) {
		snprintf(warn_buf, sizeof(warn_buf), "clock_gettime %d", UPTIME_FLAG);
		warn(warn_buf);
		return NULL;
	}

	h = uptime.tv_sec / 3600;
	m = uptime.tv_sec % 3600 / 60;

	return bprintf("%juh %jum", h, m);
}


code:
/* See LICENSE file for copyright and license details. */
#include <pwd.h>
#include <stdio.h>
#include <sys/types.h>
#include <unistd.h>

#include "../slstatus.h"
#include "../util.h"

const char *
gid(const char *unused)
{
	return bprintf("%d", getgid());
}

const char *
username(const char *unused)
{
	struct passwd *pw;

	if (!(pw = getpwuid(geteuid()))) {
		warn("getpwuid '%d':", geteuid());
		return NULL;
	}

	return bprintf("%s", pw->pw_name);
}

const char *
uid(const char *unused)
{
	return bprintf("%d", geteuid());
}


code:
/* See LICENSE file for copyright and license details. */
#include <fcntl.h>
#include <stdio.h>
#include <string.h>
#include <sys/ioctl.h>
#include <unistd.h>

#include "../slstatus.h"
#include "../util.h"

#if defined(__OpenBSD__) | defined(__FreeBSD__)
	#include <poll.h>
	#include <sndio.h>
	#include <stdlib.h>
	#include <sys/queue.h>

	struct control {
		LIST_ENTRY(control)	next;
		unsigned int		addr;
	#define CTRL_NONE	0
	#define CTRL_LEVEL	1
	#define CTRL_MUTE	2
		unsigned int		type;
		unsigned int		maxval;
		unsigned int		val;
	};

	static LIST_HEAD(, control) controls = LIST_HEAD_INITIALIZER(controls);
	static struct pollfd *pfds;
	static struct sioctl_hdl *hdl;
	static int initialized;

	/*
	 * Call-back to obtain the description of all audio controls.
	 */
	static void
	ondesc(void *unused, struct sioctl_desc *desc, int val)
	{
		struct control *c, *ctmp;
		unsigned int type = CTRL_NONE;

		if (desc == NULL)
			return;

		/* Delete existing audio control with the same address. */
		LIST_FOREACH_SAFE(c, &controls, next, ctmp) {
			if (desc->addr == c->addr) {
				LIST_REMOVE(c, next);
				free(c);
				break;
			}
		}

		/* Only match output.level and output.mute audio controls. */
		if (desc->group[0] != 0 ||
		    strcmp(desc->node0.name, "output") != 0)
			return;
		if (desc->type == SIOCTL_NUM &&
		    strcmp(desc->func, "level") == 0)
			type = CTRL_LEVEL;
		else if (desc->type == SIOCTL_SW &&
			 strcmp(desc->func, "mute") == 0)
			type = CTRL_MUTE;
		else
			return;

		c = malloc(sizeof(struct control));
		if (c == NULL) {
			warn("sndio: failed to allocate audio control\n");
			return;
		}

		c->addr = desc->addr;
		c->type = type;
		c->maxval = desc->maxval;
		c->val = val;
		LIST_INSERT_HEAD(&controls, c, next);
	}

	/*
	 * Call-back invoked whenever an audio control changes.
	 */
	static void
	onval(void *unused, unsigned int addr, unsigned int val)
	{
		struct control *c;

		LIST_FOREACH(c, &controls, next) {
			if (c->addr == addr)
				break;
		}
		c->val = val;
	}

	static void
	cleanup(void)
	{
		struct control *c;

		if (hdl) {
			sioctl_close(hdl);
			hdl = NULL;
		}

		free(pfds);
		pfds = NULL;

		while (!LIST_EMPTY(&controls)) {
			c = LIST_FIRST(&controls);
			LIST_REMOVE(c, next);
			free(c);
		}
	}

	static int
	init(void)
	{
		hdl = sioctl_open(SIO_DEVANY, SIOCTL_READ, 0);
		if (hdl == NULL) {
			warn("sndio: cannot open device");
			goto failed;
		}

		if (!sioctl_ondesc(hdl, ondesc, NULL)) {
			warn("sndio: cannot set control description call-back");
			goto failed;
		}

		if (!sioctl_onval(hdl, onval, NULL)) {
			warn("sndio: cannot set control values call-back");
			goto failed;
		}

		pfds = calloc(sioctl_nfds(hdl), sizeof(struct pollfd));
		if (pfds == NULL) {
			warn("sndio: cannot allocate pollfd structures");
			goto failed;
		}

		return 1;
	failed:
		cleanup();
		return 0;
	}

	const char *
	vol_perc(const char *unused)
	{
		struct control *c;
		int n, v, value;

		if (!initialized)
			initialized = init();

		if (hdl == NULL)
			return NULL;

		n = sioctl_pollfd(hdl, pfds, POLLIN);
		if (n > 0) {
			n = poll(pfds, n, 0);
			if (n > 0) {
				if (sioctl_revents(hdl, pfds) & POLLHUP) {
					warn("sndio: disconnected");
					cleanup();
					initialized = 0;
					return NULL;
				}
			}
		}

		value = 100;
		LIST_FOREACH(c, &controls, next) {
			if (c->type == CTRL_MUTE && c->val == 1)
				value = 0;
			else if (c->type == CTRL_LEVEL) {
				v = (c->val * 100 + c->maxval / 2) / c->maxval;
				/* For multiple channels return the minimum. */
				if (v < value)
					value = v;
			}
		}

		return bprintf("%d", value);
	}
#else
	#include <sys/soundcard.h>

	const char *
	vol_perc(const char *card)
	{
		size_t i;
		int v, afd, devmask;
		char *vnames[] = SOUND_DEVICE_NAMES;

		if ((afd = open(card, O_RDONLY | O_NONBLOCK)) < 0) {
			warn("open '%s':", card);
			return NULL;
		}

		if (ioctl(afd, (int)SOUND_MIXER_READ_DEVMASK, &devmask) < 0) {
			warn("ioctl 'SOUND_MIXER_READ_DEVMASK':");
			close(afd);
			return NULL;
		}
		for (i = 0; i < LEN(vnames); i++) {
			if (devmask & (1 << i) && !strcmp("vol", vnames[i])) {
				if (ioctl(afd, MIXER_READ(i), &v) < 0) {
					warn("ioctl 'MIXER_READ(%ld)':", i);
					close(afd);
					return NULL;
				}
			}
		}

		close(afd);

		return bprintf("%d", v & 0xff);
	}
#endif


code:
/* See LICENSE file for copyright and license details. */
#include <ifaddrs.h>
#include <stdio.h>
#include <string.h>
#include <sys/ioctl.h>
#include <sys/socket.h>
#include <unistd.h>

#include "../slstatus.h"
#include "../util.h"

#define RSSI_TO_PERC(rssi) \
			rssi >= -50 ? 100 : \
			(rssi <= -100 ? 0 : \
			(2 * (rssi + 100)))

#if defined(__linux__)
	#include <limits.h>
	#include <linux/wireless.h>

	#define NET_OPERSTATE "/sys/class/net/%s/operstate"

	const char *
	wifi_perc(const char *interface)
	{
		int cur;
		size_t i;
		char *p, *datastart;
		char path[PATH_MAX];
		char status[5];
		FILE *fp;

		if (esnprintf(path, sizeof(path), NET_OPERSTATE, interface) < 0)
			return NULL;
		if (!(fp = fopen(path, "r"))) {
			warn("fopen '%s':", path);
			return NULL;
		}
		p = fgets(status, 5, fp);
		fclose(fp);
		if (!p || strcmp(status, "up\n") != 0)
			return NULL;

		if (!(fp = fopen("/proc/net/wireless", "r"))) {
			warn("fopen '/proc/net/wireless':");
			return NULL;
		}

		for (i = 0; i < 3; i++)
			if (!(p = fgets(buf, sizeof(buf) - 1, fp)))
				break;

		fclose(fp);
		if (i < 2 || !p)
			return NULL;

		if (!(datastart = strstr(buf, interface)))
			return NULL;

		datastart = (datastart+(strlen(interface)+1));
		sscanf(datastart + 1, " %*d   %d  %*d  %*d\t\t  %*d\t   "
		       "%*d\t\t%*d\t\t %*d\t  %*d\t\t %*d", &cur);

		/* 70 is the max of /proc/net/wireless */
		return bprintf("%d", (int)((float)cur / 70 * 100));
	}

	const char *
	wifi_essid(const char *interface)
	{
		static char id[IW_ESSID_MAX_SIZE+1];
		int sockfd;
		struct iwreq wreq;

		memset(&wreq, 0, sizeof(struct iwreq));
		wreq.u.essid.length = IW_ESSID_MAX_SIZE+1;
		if (esnprintf(wreq.ifr_name, sizeof(wreq.ifr_name), "%s",
		              interface) < 0)
			return NULL;

		if ((sockfd = socket(AF_INET, SOCK_DGRAM, 0)) < 0) {
			warn("socket 'AF_INET':");
			return NULL;
		}
		wreq.u.essid.pointer = id;
		if (ioctl(sockfd,SIOCGIWESSID, &wreq) < 0) {
			warn("ioctl 'SIOCGIWESSID':");
			close(sockfd);
			return NULL;
		}

		close(sockfd);

		if (!strcmp(id, ""))
			return NULL;

		return id;
	}
#elif defined(__OpenBSD__)
	#include <net/if.h>
	#include <net/if_media.h>
	#include <net80211/ieee80211.h>
	#include <sys/select.h> /* before <sys/ieee80211_ioctl.h> for NBBY */
	#include <net80211/ieee80211_ioctl.h>
	#include <stdlib.h>
	#include <sys/types.h>

	static int
	load_ieee80211_nodereq(const char *interface, struct ieee80211_nodereq *nr)
	{
		struct ieee80211_bssid bssid;
		int sockfd;
		uint8_t zero_bssid[IEEE80211_ADDR_LEN];

		memset(&bssid, 0, sizeof(bssid));
		memset(nr, 0, sizeof(struct ieee80211_nodereq));
		if ((sockfd = socket(AF_INET, SOCK_DGRAM, 0)) < 0) {
			warn("socket 'AF_INET':");
			return 0;
		}
		strlcpy(bssid.i_name, interface, sizeof(bssid.i_name));
		if ((ioctl(sockfd, SIOCG80211BSSID, &bssid)) < 0) {
			warn("ioctl 'SIOCG80211BSSID':");
			close(sockfd);
			return 0;
		}
		memset(&zero_bssid, 0, sizeof(zero_bssid));
		if (memcmp(bssid.i_bssid, zero_bssid,
		    IEEE80211_ADDR_LEN) == 0) {
			close(sockfd);
			return 0;
		}
		strlcpy(nr->nr_ifname, interface, sizeof(nr->nr_ifname));
		memcpy(&nr->nr_macaddr, bssid.i_bssid, sizeof(nr->nr_macaddr));
		if ((ioctl(sockfd, SIOCG80211NODE, nr)) < 0 && nr->nr_rssi) {
			warn("ioctl 'SIOCG80211NODE':");
			close(sockfd);
			return 0;
		}

		return close(sockfd), 1;
	}

	const char *
	wifi_perc(const char *interface)
	{
		struct ieee80211_nodereq nr;
		int q;

		if (load_ieee80211_nodereq(interface, &nr)) {
			if (nr.nr_max_rssi)
				q = IEEE80211_NODEREQ_RSSI(&nr);
			else
				q = RSSI_TO_PERC(nr.nr_rssi);

			return bprintf("%d", q);
		}

		return NULL;
	}

	const char *
	wifi_essid(const char *interface)
	{
		struct ieee80211_nodereq nr;

		if (load_ieee80211_nodereq(interface, &nr))
			return bprintf("%s", nr.nr_nwid);

		return NULL;
	}
#elif defined(__FreeBSD__)
	#include <net/if.h>
	#include <net80211/ieee80211_ioctl.h>

	int
	load_ieee80211req(int sock, const char *interface, void *data, int type, size_t *len)
	{
		char warn_buf[256];
		struct ieee80211req ireq;
		memset(&ireq, 0, sizeof(ireq));
		ireq.i_type = type;
		ireq.i_data = (caddr_t) data;
		ireq.i_len = *len;

		strlcpy(ireq.i_name, interface, sizeof(ireq.i_name));
		if (ioctl(sock, SIOCG80211, &ireq) < 0) {
			snprintf(warn_buf,  sizeof(warn_buf),
					"ioctl: 'SIOCG80211': %d", type);
			warn(warn_buf);
			return 0;
		}

		*len = ireq.i_len;
		return 1;
	}

	const char *
	wifi_perc(const char *interface)
	{
		union {
			struct ieee80211req_sta_req sta;
			uint8_t buf[24 * 1024];
		} info;
		uint8_t bssid[IEEE80211_ADDR_LEN];
		int rssi_dbm;
		int sockfd;
		size_t len;
		const char *fmt;

		if ((sockfd = socket(AF_INET, SOCK_DGRAM, 0)) < 0) {
			warn("socket 'AF_INET':");
			return NULL;
		}

		/* Retreive MAC address of interface */
		len = IEEE80211_ADDR_LEN;
		fmt = NULL;
		if (load_ieee80211req(sockfd, interface, &bssid, IEEE80211_IOC_BSSID, &len))
		{
			/* Retrieve info on station with above BSSID */
			memset(&info, 0, sizeof(info));
			memcpy(info.sta.is_u.macaddr, bssid, sizeof(bssid));

			len = sizeof(info);
			if (load_ieee80211req(sockfd, interface, &info, IEEE80211_IOC_STA_INFO, &len)) {
				rssi_dbm = info.sta.info[0].isi_noise +
 					         info.sta.info[0].isi_rssi / 2;

				fmt = bprintf("%d", RSSI_TO_PERC(rssi_dbm));
			}
		}

		close(sockfd);
		return fmt;
	}

	const char *
	wifi_essid(const char *interface)
	{
		char ssid[IEEE80211_NWID_LEN + 1];
		size_t len;
		int sockfd;
		const char *fmt;

		if ((sockfd = socket(AF_INET, SOCK_DGRAM, 0)) < 0) {
			warn("socket 'AF_INET':");
			return NULL;
		}

		fmt = NULL;
		len = sizeof(ssid);
		memset(&ssid, 0, len);
		if (load_ieee80211req(sockfd, interface, &ssid, IEEE80211_IOC_SSID, &len)) {
			if (len < sizeof(ssid))
				len += 1;
			else
				len = sizeof(ssid);

			ssid[len - 1] = '\0';
			fmt = bprintf("%s", ssid);
		}

		close(sockfd);
		return fmt;
	}
#endif


code:
/* See LICENSE file for copyright and license details. */

/* interval between updates (in ms) */
const unsigned int interval = 1000;

/* text to show if no value can be retrieved */
static const char unknown_str[] = "n/a";

/* maximum output string length */
#define MAXLEN 2048

/*
 * function            description                     argument (example)
 *
 * battery_perc        battery percentage              battery name (BAT0)
 *                                                     NULL on OpenBSD/FreeBSD
 * battery_remaining   battery remaining HH:MM         battery name (BAT0)
 *                                                     NULL on OpenBSD/FreeBSD
 * battery_state       battery charging state          battery name (BAT0)
 *                                                     NULL on OpenBSD/FreeBSD
 * cat                 read arbitrary file             path
 * cpu_freq            cpu frequency in MHz            NULL
 * cpu_perc            cpu usage in percent            NULL
 * datetime            date and time                   format string (%F %T)
 * disk_free           free disk space in GB           mountpoint path (/)
 * disk_perc           disk usage in percent           mountpoint path (/)
 * disk_total          total disk space in GB          mountpoint path (/)
 * disk_used           used disk space in GB           mountpoint path (/)
 * entropy             available entropy               NULL
 * gid                 GID of current user             NULL
 * hostname            hostname                        NULL
 * ipv4                IPv4 address                    interface name (eth0)
 * ipv6                IPv6 address                    interface name (eth0)
 * kernel_release      `uname -r`                      NULL
 * keyboard_indicators caps/num lock indicators        format string (c?n?)
 *                                                     see keyboard_indicators.c
 * keymap              layout (variant) of current     NULL
 *                     keymap
 * load_avg            load average                    NULL
 * netspeed_rx         receive network speed           interface name (wlan0)
 * netspeed_tx         transfer network speed          interface name (wlan0)
 * num_files           number of files in a directory  path
 *                                                     (/home/foo/Inbox/cur)
 * ram_free            free memory in GB               NULL
 * ram_perc            memory usage in percent         NULL
 * ram_total           total memory size in GB         NULL
 * ram_used            used memory in GB               NULL
 * run_command         custom shell command            command (echo foo)
 * swap_free           free swap in GB                 NULL
 * swap_perc           swap usage in percent           NULL
 * swap_total          total swap size in GB           NULL
 * swap_used           used swap in GB                 NULL
 * temp                temperature in degree celsius   sensor file
 *                                                     (/sys/class/thermal/...)
 *                                                     NULL on OpenBSD
 *                                                     thermal zone on FreeBSD
 *                                                     (tz0, tz1, etc.)
 * uid                 UID of current user             NULL
 * uptime              system uptime                   NULL
 * username            username of current user        NULL
 * vol_perc            OSS/ALSA volume in percent      mixer file (/dev/mixer)
 *                                                     NULL on OpenBSD/FreeBSD
 * wifi_essid          WiFi ESSID                      interface name (wlan0)
 * wifi_perc           WiFi signal in percent          interface name (wlan0)
 */
static const struct arg args[] = {
	/* function format          argument */
    { uptime,        " %s | ",                         NULL },
    { cpu_perc,      " %s%% | ",                       NULL },
    { disk_used,     " %s / ",                       "/" },
    { disk_free,     "%s | ",                            "/" },
    { ram_used,      " %s | ",                         NULL },
    { battery_perc,  " %s%% | ",                     "BAT0" },
		{ datetime,     "%s",             "%a, %b %d %T %p |" },
};


code:
# slstatus version
VERSION = 0

# customize below to fit your system

# paths
PREFIX = /usr/local
MANPREFIX = $(PREFIX)/share/man

X11INC = /usr/X11R6/include
X11LIB = /usr/X11R6/lib

# flags
CPPFLAGS = -I$(X11INC) -D_DEFAULT_SOURCE
CFLAGS   = -std=c99 -pedantic -Wall -Wextra -Wno-unused-parameter -Os
LDFLAGS  = -L$(X11LIB) -s
# OpenBSD: add -lsndio
# FreeBSD: add -lkvm -lsndio
LDLIBS   = -lX11

# compiler and linker
CC = cc


code:
.Dd 2020-06-23
.Dt SLSTATUS 1
.Os
.Sh NAME
.Nm slstatus
.Nd suckless status monitor
.Sh SYNOPSIS
.Nm
.Op Fl s
.Op Fl 1
.Sh DESCRIPTION
.Nm
is a suckless status monitor for window managers that use WM_NAME (e.g. dwm) or
stdin to fill the status bar.
By default,
.Nm
outputs to WM_NAME.
.Sh OPTIONS
.Bl -tag -width Ds
.It Fl s
Write to stdout instead of WM_NAME.
.It Fl 1
Write once to stdout and quit.
.El
.Sh CUSTOMIZATION
.Nm
can be customized by creating a custom config.h and (re)compiling the source
code. This keeps it fast, secure and simple.


code:
/* See LICENSE file for copyright and license details. */
#include <errno.h>
#include <signal.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <time.h>
#include <X11/Xlib.h>

#include "arg.h"
#include "slstatus.h"
#include "util.h"

struct arg {
	const char *(*func)(const char *);
	const char *fmt;
	const char *args;
};

char buf[1024];
static volatile sig_atomic_t done;
static Display *dpy;

#include "config.h"

static void
terminate(const int signo)
{
	if (signo != SIGUSR1)
		done = 1;
}

static void
difftimespec(struct timespec *res, struct timespec *a, struct timespec *b)
{
	res->tv_sec = a->tv_sec - b->tv_sec - (a->tv_nsec < b->tv_nsec);
	res->tv_nsec = a->tv_nsec - b->tv_nsec +
	               (a->tv_nsec < b->tv_nsec) * 1E9;
}

static void
usage(void)
{
	die("usage: %s [-s] [-1]", argv0);
}

int
main(int argc, char *argv[])
{
	struct sigaction act;
	struct timespec start, current, diff, intspec, wait;
	size_t i, len;
	int sflag, ret;
	char status[MAXLEN];
	const char *res;

	sflag = 0;
	ARGBEGIN {
	case '1':
		done = 1;
		/* FALLTHROUGH */
	case 's':
		sflag = 1;
		break;
	default:
		usage();
	} ARGEND

	if (argc)
		usage();

	memset(&act, 0, sizeof(act));
	act.sa_handler = terminate;
	sigaction(SIGINT,  &act, NULL);
	sigaction(SIGTERM, &act, NULL);
	act.sa_flags |= SA_RESTART;
	sigaction(SIGUSR1, &act, NULL);

	if (!sflag && !(dpy = XOpenDisplay(NULL)))
		die("XOpenDisplay: Failed to open display");

	do {
		if (clock_gettime(CLOCK_MONOTONIC, &start) < 0)
			die("clock_gettime:");

		status[0] = '\0';
		for (i = len = 0; i < LEN(args); i++) {
			if (!(res = args[i].func(args[i].args)))
				res = unknown_str;

			if ((ret = esnprintf(status + len, sizeof(status) - len,
			                     args[i].fmt, res)) < 0)
				break;

			len += ret;
		}

		if (sflag) {
			puts(status);
			fflush(stdout);
			if (ferror(stdout))
				die("puts:");
		} else {
			if (XStoreName(dpy, DefaultRootWindow(dpy), status) < 0)
				die("XStoreName: Allocation failed");
			XFlush(dpy);
		}

		if (!done) {
			if (clock_gettime(CLOCK_MONOTONIC, &current) < 0)
				die("clock_gettime:");
			difftimespec(&diff, &current, &start);

			intspec.tv_sec = interval / 1000;
			intspec.tv_nsec = (interval % 1000) * 1E6;
			difftimespec(&wait, &intspec, &diff);

			if (wait.tv_sec >= 0 &&
			    nanosleep(&wait, NULL) < 0 &&
			    errno != EINTR)
					die("nanosleep:");
		}
	} while (!done);

	if (!sflag) {
		XStoreName(dpy, DefaultRootWindow(dpy), NULL);
		if (XCloseDisplay(dpy) < 0)
			die("XCloseDisplay: Failed to close display");
	}

	return 0;
}


code:
/* See LICENSE file for copyright and license details. */

/* battery */
const char *battery_perc(const char *);
const char *battery_remaining(const char *);
const char *battery_state(const char *);

/* cat */
const char *cat(const char *path);

/* cpu */
const char *cpu_freq(const char *unused);
const char *cpu_perc(const char *unused);

/* datetime */
const char *datetime(const char *fmt);

/* disk */
const char *disk_free(const char *path);
const char *disk_perc(const char *path);
const char *disk_total(const char *path);
const char *disk_used(const char *path);

/* entropy */
const char *entropy(const char *unused);

/* hostname */
const char *hostname(const char *unused);

/* ip */
const char *ipv4(const char *interface);
const char *ipv6(const char *interface);

/* kernel_release */
const char *kernel_release(const char *unused);

/* keyboard_indicators */
const char *keyboard_indicators(const char *fmt);

/* keymap */
const char *keymap(const char *unused);

/* load_avg */
const char *load_avg(const char *unused);

/* netspeeds */
const char *netspeed_rx(const char *interface);
const char *netspeed_tx(const char *interface);

/* num_files */
const char *num_files(const char *path);

/* ram */
const char *ram_free(const char *unused);
const char *ram_perc(const char *unused);
const char *ram_total(const char *unused);
const char *ram_used(const char *unused);

/* run_command */
const char *run_command(const char *cmd);

/* swap */
const char *swap_free(const char *unused);
const char *swap_perc(const char *unused);
const char *swap_total(const char *unused);
const char *swap_used(const char *unused);

/* temperature */
const char *temp(const char *);

/* uptime */
const char *uptime(const char *unused);

/* user */
const char *gid(const char *unused);
const char *uid(const char *unused);
const char *username(const char *unused);

/* volume */
const char *vol_perc(const char *card);

/* wifi */
const char *wifi_essid(const char *interface);
const char *wifi_perc(const char *interface);


code:
/* See LICENSE file for copyright and license details. */
#include <errno.h>
#include <stdarg.h>
#include <stdint.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>

#include "util.h"

char *argv0;

static void
verr(const char *fmt, va_list ap)
{
	vfprintf(stderr, fmt, ap);

	if (fmt[0] && fmt[strlen(fmt) - 1] == ':') {
		fputc(' ', stderr);
		perror(NULL);
	} else {
		fputc('\n', stderr);
	}
}

void
warn(const char *fmt, ...)
{
	va_list ap;

	va_start(ap, fmt);
	verr(fmt, ap);
	va_end(ap);
}

void
die(const char *fmt, ...)
{
	va_list ap;

	va_start(ap, fmt);
	verr(fmt, ap);
	va_end(ap);

	exit(1);
}

static int
evsnprintf(char *str, size_t size, const char *fmt, va_list ap)
{
	int ret;

	ret = vsnprintf(str, size, fmt, ap);

	if (ret < 0) {
		warn("vsnprintf:");
		return -1;
	} else if ((size_t)ret >= size) {
		warn("vsnprintf: Output truncated");
		return -1;
	}

	return ret;
}

int
esnprintf(char *str, size_t size, const char *fmt, ...)
{
	va_list ap;
	int ret;

	va_start(ap, fmt);
	ret = evsnprintf(str, size, fmt, ap);
	va_end(ap);

	return ret;
}

const char *
bprintf(const char *fmt, ...)
{
	va_list ap;
	int ret;

	va_start(ap, fmt);
	ret = evsnprintf(buf, sizeof(buf), fmt, ap);
	va_end(ap);

	return (ret < 0) ? NULL : buf;
}

const char *
fmt_human(uintmax_t num, int base)
{
	double scaled;
	size_t i, prefixlen;
	const char **prefix;
	const char *prefix_1000[] = { "", "k", "M", "G", "T", "P", "E", "Z",
	                              "Y" };
	const char *prefix_1024[] = { "", "Ki", "Mi", "Gi", "Ti", "Pi", "Ei",
	                              "Zi", "Yi" };

	switch (base) {
	case 1000:
		prefix = prefix_1000;
		prefixlen = LEN(prefix_1000);
		break;
	case 1024:
		prefix = prefix_1024;
		prefixlen = LEN(prefix_1024);
		break;
	default:
		warn("fmt_human: Invalid base");
		return NULL;
	}

	scaled = num;
	for (i = 0; i < prefixlen && scaled >= base; i++)
		scaled /= base;

	return bprintf("%.1f %s", scaled, prefix[i]);
}

int
pscanf(const char *path, const char *fmt, ...)
{
	FILE *fp;
	va_list ap;
	int n;

	if (!(fp = fopen(path, "r"))) {
		warn("fopen '%s':", path);
		return -1;
	}
	va_start(ap, fmt);
	n = vfscanf(fp, fmt, ap);
	va_end(ap);
	fclose(fp);

	return (n == EOF) ? -1 : n;
}


code:
/* See LICENSE file for copyright and license details. */
#include <stdint.h>

extern char buf[1024];

#define LEN(x) (sizeof(x) / sizeof((x)[0]))

extern char *argv0;

void warn(const char *, ...);
void die(const char *, ...);

int esnprintf(char *str, size_t size, const char *fmt, ...);
const char *bprintf(const char *fmt, ...);
const char *fmt_human(uintmax_t num, int base);
int pscanf(const char *path, const char *fmt, ...);


code:
## Why does st not handle utmp entries?

Use the excellent tool of [utmp](https://git.suckless.org/utmp/) for this task.

## Some _random program_ complains that st is unknown/not recognised/unsupported/whatever!

It means that st doesn’t have any terminfo entry on your system. Chances are
you did not `make install`. If you just want to test it without installing it,
you can manually run `tic -sx st.info`.

## Nothing works, and nothing is said about an unknown terminal!

* Some programs just assume they’re running in xterm i.e. they don’t rely on
  terminfo. What you see is the current state of the “xterm compliance”.
* Some programs don’t complain about the lacking st description and default to
  another terminal. In that case see the question about terminfo.

## How do I scroll back up?

* Using a terminal multiplexer.
	* `st -e tmux` using C-b [
	* `st -e screen` using C-a ESC
* Using the excellent tool of [scroll](https://git.suckless.org/scroll/).
* Using the scrollback [patch](https://st.suckless.org/patches/scrollback/).

## I would like to have utmp and/or scroll functionality by default

You can add the absolute path of both programs in your config.h file. You only
have to modify the value of utmp and scroll variables.

## Why doesn't the Del key work in some programs?

Taken from the terminfo manpage:

	If the terminal has a keypad that transmits codes when the keys
	are pressed, this information can be given. Note that it is not
	possible to handle terminals where the keypad only works in
	local (this applies, for example, to the unshifted HP 2621 keys).
	If the keypad can be set to transmit or not transmit, give these
	codes as smkx and rmkx. Otherwise the keypad is assumed to
	always transmit.

In the st case smkx=E[?1hE= and rmkx=E[?1lE>, so it is mandatory that
applications which want to test against keypad keys send these
sequences.

But buggy applications (like bash and irssi, for example) don't do this. A fast
solution for them is to use the following command:

	$ printf '\033[?1h\033=' >/dev/tty

or
	$ tput smkx

In the case of bash, readline is used. Readline has a different note in its
manpage about this issue:

	enable-keypad (Off)
		When set to On, readline will try to enable the
		application keypad when it is called. Some systems
		need this to enable arrow keys.

Adding this option to your .inputrc will fix the keypad problem for all
applications using readline.

If you are using zsh, then read the zsh FAQ
<http://zsh.sourceforge.net/FAQ/zshfaq03.html#l25>:

	It should be noted that the O / [ confusion can occur with other keys
	such as Home and End. Some systems let you query the key sequences
	sent by these keys from the system's terminal database, terminfo.
	Unfortunately, the key sequences given there typically apply to the
	mode that is not the one zsh uses by default (it's the "application"
	mode rather than the "raw" mode). Explaining the use of terminfo is
	outside of the scope of this FAQ, but if you wish to use the key
	sequences given there you can tell the line editor to turn on
	"application" mode when it starts and turn it off when it stops:

		function zle-line-init () { echoti smkx }
		function zle-line-finish () { echoti rmkx }
		zle -N zle-line-init
		zle -N zle-line-finish

Putting these lines into your .zshrc will fix the problems.

## How can I use meta in 8bit mode?

St supports meta in 8bit mode, but the default terminfo entry doesn't
use this capability. If you want it, you have to use the 'st-meta' value
in TERM.

## I cannot compile st in OpenBSD

OpenBSD lacks librt, despite it being mandatory in POSIX
<http://pubs.opengroup.org/onlinepubs/9699919799/utilities/c99.html#tag_20_11_13>.
If you want to compile st for OpenBSD you have to remove -lrt from config.mk, and
st will compile without any loss of functionality, because all the functions are
included in libc on this platform.

## The Backspace Case

St is emulating the Linux way of handling backspace being delete and delete being
backspace.

This is an issue that was discussed in suckless mailing list
<https://lists.suckless.org/dev/1404/20697.html>. Here is why some old grumpy
terminal users wants its backspace to be how he feels it:

	Well, I am going to comment why I want to change the behaviour
	of this key. When ASCII was defined in 1968, communication
	with computers was done using punched cards, or hardcopy
	terminals (basically a typewriter machine connected with the
	computer using a serial port).  ASCII defines DELETE as 7F,
	because, in punched-card terms, it means all the holes of the
	card punched; it is thus a kind of 'physical delete'. In the
	same way, the BACKSPACE key was a non-destructive backspace,
	as on a typewriter.  So, if you wanted to delete a character,
	you had to BACKSPACE and then DELETE.  Another use of BACKSPACE
	was to type accented characters, for example 'a BACKSPACE `'.
	The VT100 had no BACKSPACE key; it was generated using the
	CONTROL key as another control character (CONTROL key sets to
	0 b7 b6 b5, so it converts H (code 0x48) into BACKSPACE (code
	0x08)), but it had a DELETE key in a similar position where
	the BACKSPACE key is located today on common PC keyboards.
	All the terminal emulators emulated the difference between
	these keys correctly: the backspace key generated a BACKSPACE
	(^H) and delete key generated a DELETE (^?).

	But a problem arose when Linus Torvalds wrote Linux. Unlike
	earlier terminals, the Linux virtual terminal (the terminal
	emulator integrated in the kernel) returned a DELETE when
	backspace was pressed, due to the VT100 having a DELETE key in
	the same position.  This created a lot of problems (see [1]
	and [2]). Since Linux has become the king, a lot of terminal
	emulators today generate a DELETE when the backspace key is
	pressed in order to avoid problems with Linux. The result is
	that the only way of generating a BACKSPACE on these systems
	is by using CONTROL + H. (I also think that emacs had an
	important point here because the CONTROL + H prefix is used
	in emacs in some commands (help commands).)

	From point of view of the kernel, you can change the key
	for deleting a previous character with stty erase. When you
	connect a real terminal into a machine you describe the type
	of terminal, so getty configures the correct value of stty
	erase for this terminal. In the case of terminal emulators,
	however, you don't have any getty that can set the correct
	value of stty erase, so you always get the default value.
	For this reason, it is necessary to add 'stty erase ^H' to your
	profile if you have changed the value of the backspace key.
	Of course, another solution is for st itself to modify the
	value of stty erase.  I usually have the inverse problem:
	when I connect to non-Unix machines, I have to press CONTROL +
	h to get a BACKSPACE. The inverse problem occurs when a user
	connects to my Unix machines from a different system with a
	correct backspace key.

	[1] http://www.ibb.net/~anne/keyboard.html
	[2] http://www.tldp.org/HOWTO/Keyboard-and-Console-HOWTO-5.html

## But I really want the old grumpy behaviour of my terminal

Apply [1].

[1] https://st.suckless.org/patches/delkey

## Why do images not work in st using the w3m image hack?

w3mimg uses a hack that draws an image on top of the terminal emulator Drawable
window. The hack relies on the terminal to use a single buffer to draw its
contents directly.

st uses double-buffered drawing so the image is quickly replaced and may show a
short flicker effect.

Below is a patch example to change st double-buffering to a single Drawable
buffer.

diff --git a/x.c b/x.c
--- a/x.c
+++ b/x.c
@@ -732,10 +732,6 @@ xresize(int col, int row)
 	win.tw = col * win.cw;
 	win.th = row * win.ch;

-	XFreePixmap(xw.dpy, xw.buf);
-	xw.buf = XCreatePixmap(xw.dpy, xw.win, win.w, win.h,
-			DefaultDepth(xw.dpy, xw.scr));
-	XftDrawChange(xw.draw, xw.buf);
 	xclear(0, 0, win.w, win.h);

 	/* resize to new width */
@@ -1148,8 +1144,7 @@ xinit(int cols, int rows)
 	gcvalues.graphics_exposures = False;
 	dc.gc = XCreateGC(xw.dpy, parent, GCGraphicsExposures,
 			&gcvalues);
-	xw.buf = XCreatePixmap(xw.dpy, xw.win, win.w, win.h,
-			DefaultDepth(xw.dpy, xw.scr));
+	xw.buf = xw.win;
 	XSetForeground(xw.dpy, dc.gc, dc.col[defaultbg].pixel);
 	XFillRectangle(xw.dpy, xw.buf, dc.gc, 0, 0, win.w, win.h);

@@ -1632,8 +1627,6 @@ xdrawline(Line line, int x1, int y1, int x2)
 void
 xfinishdraw(void)
 {
-	XCopyArea(xw.dpy, xw.buf, xw.win, dc.gc, 0, 0, win.w,
-			win.h, 0, 0);
 	XSetForeground(xw.dpy, dc.gc,
 			dc.col[IS_SET(MODE_REVERSE)?
 				defaultfg : defaultbg].pixel);

## BadLength X error in Xft when trying to render emoji

Xft makes st crash when rendering color emojis with the following error:

"X Error of failed request:  BadLength (poly request too large or internal Xlib length error)"
  Major opcode of failed request:  139 (RENDER)
  Minor opcode of failed request:  20 (RenderAddGlyphs)
  Serial number of failed request: 1595
  Current serial number in output stream:  1818"

This is a known bug in Xft (not st) which happens on some platforms and
combination of particular fonts and fontconfig settings.

See also:
https://gitlab.freedesktop.org/xorg/lib/libxft/issues/6
https://bugs.freedesktop.org/show_bug.cgi?id=107534
https://bugzilla.redhat.com/show_bug.cgi?id=1498269

The solution is to remove color emoji fonts or disable this in the fontconfig
XML configuration.  As an ugly workaround (which may work only on newer
fontconfig versions (FC_COLOR)), the following code can be used to mask color
fonts:

	FcPatternAddBool(fcpattern, FC_COLOR, FcFalse);

Please don't bother reporting this bug to st, but notify the upstream Xft
developers about fixing this bug.

As of 2022-09-05 this now seems to be finally fixed in libXft 2.3.5:
https://gitlab.freedesktop.org/xorg/lib/libxft/-/blob/libXft-2.3.5/NEWS


code:
A STATEMENT ON LEGACY SUPPORT

In the terminal world there is much cruft that comes from old and unsup‐
ported terminals that inherit incompatible modes  and  escape  sequences
which noone is able to know, except when he/she comes from that time and
developed a graphical vt100 emulator at that time.

One  goal  of  st is to only support what is really needed. When you en‐
counter a sequence which you really need, implement it.  But  while  you
are  at it,  do not add the other cruft you might encounter while sneek‐
ing at other terminal emulators. History has bloated them and  there  is
no real evidence that most of the sequences are used today.

Christoph Lohmann <20h@r-36.net>
2012-09-13T07:00:36.081271045+02:00


code:
# st - simple terminal
# See LICENSE file for copyright and license details.
.POSIX:

include config.mk

SRC = st.c x.c
OBJ = $(SRC:.c=.o)

all: options st

options:
	@echo st build options:
	@echo "CFLAGS  = $(STCFLAGS)"
	@echo "LDFLAGS = $(STLDFLAGS)"
	@echo "CC      = $(CC)"

config.h:
	cp config.def.h config.h

.c.o:
	$(CC) $(STCFLAGS) -c $<

st.o: config.h st.h win.h
x.o: arg.h config.h st.h win.h

$(OBJ): config.h config.mk

st: $(OBJ)
	$(CC) -o $@ $(OBJ) $(STLDFLAGS)

clean:
	rm -f st $(OBJ) st-$(VERSION).tar.gz

dist: clean
	mkdir -p st-$(VERSION)
	cp -R FAQ LEGACY TODO LICENSE Makefile README config.mk\
		config.def.h st.info st.1 arg.h st.h win.h $(SRC)\
		st-$(VERSION)
	tar -cf - st-$(VERSION) | gzip > st-$(VERSION).tar.gz
	rm -rf st-$(VERSION)

install: st
	mkdir -p $(DESTDIR)$(PREFIX)/bin
	cp -f st $(DESTDIR)$(PREFIX)/bin
	chmod 755 $(DESTDIR)$(PREFIX)/bin/st
	mkdir -p $(DESTDIR)$(MANPREFIX)/man1
	sed "s/VERSION/$(VERSION)/g" < st.1 > $(DESTDIR)$(MANPREFIX)/man1/st.1
	chmod 644 $(DESTDIR)$(MANPREFIX)/man1/st.1
	tic -sx st.info
	@echo Please see the README file regarding the terminfo entry of st.

uninstall:
	rm -f $(DESTDIR)$(PREFIX)/bin/st
	rm -f $(DESTDIR)$(MANPREFIX)/man1/st.1

.PHONY: all options clean dist install uninstall


code:
st - simple terminal
--------------------
st is a simple terminal emulator for X which sucks less.

Requirements
------------
In order to build st you need the Xlib header files.

Installation
------------
Edit config.mk to match your local setup (st is installed into
the /usr/local namespace by default).

Afterwards enter the following command to build and install st (if
necessary as root):

    make clean install

Running st
----------
If you did not install st with make clean install, you must compile
the st terminfo entry with the following command:

    tic -sx st.info

See the man page for additional details.

Credits
-------
Based on Aurélien APTEL <aurelien dot aptel at gmail dot com> bt source code.


code:
vt emulation
------------

* double-height support

code & interface
----------------

* add a simple way to do multiplexing

drawing
-------
* add diacritics support to xdraws()
	* switch to a suckless font drawing library
* make the font cache simpler
* add better support for brightening of the upper colors

bugs
----

* fix shift up/down (shift selection in emacs)
* remove DEC test sequence when appropriate

misc
----

    $ grep -nE 'XXX|TODO' st.c


code:
/*
 * Copy me if you can.
 * by 20h
 */

#ifndef ARG_H__
#define ARG_H__

extern char *argv0;

/* use main(int argc, char *argv[]) */
#define ARGBEGIN	for (argv0 = *argv, argv++, argc--;\
					argv[0] && argv[0][0] == '-'\
					&& argv[0][1];\
					argc--, argv++) {\
				char argc_;\
				char **argv_;\
				int brk_;\
				if (argv[0][1] == '-' && argv[0][2] == '\0') {\
					argv++;\
					argc--;\
					break;\
				}\
				int i_;\
				for (i_ = 1, brk_ = 0, argv_ = argv;\
						argv[0][i_] && !brk_;\
						i_++) {\
					if (argv_ != argv)\
						break;\
					argc_ = argv[0][i_];\
					switch (argc_)

#define ARGEND			}\
			}

#define ARGC()		argc_

#define EARGF(x)	((argv[0][i_+1] == '\0' && argv[1] == NULL)?\
				((x), abort(), (char *)0) :\
				(brk_ = 1, (argv[0][i_+1] != '\0')?\
					(&argv[0][i_+1]) :\
					(argc--, argv++, argv[0])))

#define ARGF()		((argv[0][i_+1] == '\0' && argv[1] == NULL)?\
				(char *)0 :\
				(brk_ = 1, (argv[0][i_+1] != '\0')?\
					(&argv[0][i_+1]) :\
					(argc--, argv++, argv[0])))

#endif


code:
/* See LICENSE file for copyright and license details. */

/*
 * appearance
 *
 * font: see http://freedesktop.org/software/fontconfig/fontconfig-user.html
 */
// static char *font = "JetBrains
// Mono:pixelsize=16:antialias=true:autohint=true"; static char *font =
// "Input-Regular:pixelsize=16:antialias=true:autohint=true";
static char *font = "Iosevka Term:pixelsize=16:antialias=true:autohint=true";
static int borderpx = 16;

/*
 * What program is execed by st depends of these precedence rules:
 * 1: program passed with -e
 * 2: scroll and/or utmp
 * 3: SHELL environment variable
 * 4: value of shell in /etc/passwd
 * 5: value of shell in config.h
 */
static char *shell = "/bin/sh";
char *utmp = NULL;
/* scroll program: to enable use a string like "scroll" */
char *scroll = NULL;
char *stty_args = "stty raw pass8 nl -echo -iexten -cstopb 38400";

/* identification sequence returned in DA and DECID */
char *vtiden = "\033[?6c";

/* Kerning / character bounding-box multipliers */
static float cwscale = 1.0;
static float chscale = 1.0;

/*
 * word delimiter string
 *
 * More advanced example: L" `'\"()[]{}"
 */
wchar_t *worddelimiters = L" ";

/* selection timeouts (in milliseconds) */
static unsigned int doubleclicktimeout = 300;
static unsigned int tripleclicktimeout = 600;

/* alt screens */
int allowaltscreen = 1;

/* allow certain non-interactive (insecure) window operations such as:
   setting the clipboard text */
int allowwindowops = 0;

/*
 * draw latency range in ms - from new content/keypress/etc until drawing.
 * within this range, st draws when content stops arriving (idle). mostly it's
 * near minlatency, but it waits longer for slow updates to avoid partial draw.
 * low minlatency will tear/flicker more, as it can "detect" idle too early.
 */
static double minlatency = 8;
static double maxlatency = 33;

/*
 * blinking timeout (set to 0 to disable blinking) for the terminal blinking
 * attribute.
 */
static unsigned int blinktimeout = 800;

/*
 * thickness of underline and bar cursors
 */
static unsigned int cursorthickness = 2;

/*
 * bell volume. It must be a value between -100 and 100. Use 0 for disabling
 * it
 */
static int bellvolume = 0;

/* default TERM value */
char *termname = "st-256color";

/*
 * spaces per tab
 *
 * When you are changing this value, don't forget to adapt the »it« value in
 * the st.info and appropriately install the st.info in the environment where
 * you use this st version.
 *
 *	it#$tabspaces,
 *
 * Secondly make sure your kernel is not expanding tabs. When running `stty
 * -a` »tab0« should appear. You can tell the terminal to not expand tabs by
 *  running following command:
 *
 *	stty tabs
 */
unsigned int tabspaces = 8;

/* bg opacity */
float alpha = 0.8;

/* Terminal colors (16 first used in escape sequence) */
static const char *colorname[] = {
    /* 8 normal colors */
    "black", "red3", "green3", "yellow3", "blue2", "magenta3", "cyan3",
    "gray90",

    /* 8 bright colors */
    "gray50", "red", "green", "yellow", "#5c5cff", "magenta", "cyan", "white",

    [255] = 0,

    /* more colors can be added after 255 to use with DefaultXX */
    "#cccccc", "#555555", "gray90", /* default foreground colour */
    "black",                        /* default background colour */
};

/*
 * Default colors (colorname index)
 * foreground, background, cursor, reverse cursor
 */
unsigned int defaultfg = 258;
unsigned int defaultbg = 256;
unsigned int defaultcs = 1;
static unsigned int defaultrcs = 257;

/*
 * Default shape of cursor
 * 2: Block ("█")
 * 4: Underline ("_")
 * 6: Bar ("|")
 * 7: Snowman ("☃")
 */
static unsigned int cursorshape = 2;

/*
 * Default columns and rows numbers
 */

static unsigned int cols = 80;
static unsigned int rows = 24;

/*
 * Default colour and shape of the mouse cursor
 */
static unsigned int mouseshape = XC_xterm;
static unsigned int mousefg = 7;
static unsigned int mousebg = 0;

/*
 * Color used to display font attributes when fontconfig selected a font which
 * doesn't match the ones requested.
 */
static unsigned int defaultattr = 11;

/*
 * Force mouse select/shortcuts while mask is active (when MODE_MOUSE is set).
 * Note that if you want to use ShiftMask with selmasks, set this to an other
 * modifier, set to 0 to not use it.
 */
static uint forcemousemod = ShiftMask;

/*
 * Xresources preferences to load at startup
 */
ResourcePref resources[] = {
    {"font", STRING, &font},
    {"color0", STRING, &colorname[0]},
    {"color1", STRING, &colorname[1]},
    {"color2", STRING, &colorname[2]},
    {"color3", STRING, &colorname[3]},
    {"color4", STRING, &colorname[4]},
    {"color5", STRING, &colorname[5]},
    {"color6", STRING, &colorname[6]},
    {"color7", STRING, &colorname[7]},
    {"color8", STRING, &colorname[8]},
    {"color9", STRING, &colorname[9]},
    {"color10", STRING, &colorname[10]},
    {"color11", STRING, &colorname[11]},
    {"color12", STRING, &colorname[12]},
    {"color13", STRING, &colorname[13]},
    {"color14", STRING, &colorname[14]},
    {"color15", STRING, &colorname[15]},
    {"background", STRING, &colorname[256]},
    {"foreground", STRING, &colorname[257]},
    {"cursorColor", STRING, &colorname[258]},
    {"termname", STRING, &termname},
    {"shell", STRING, &shell},
    {"minlatency", INTEGER, &minlatency},
    {"maxlatency", INTEGER, &maxlatency},
    {"blinktimeout", INTEGER, &blinktimeout},
    {"bellvolume", INTEGER, &bellvolume},
    {"tabspaces", INTEGER, &tabspaces},
    {"borderpx", INTEGER, &borderpx},
    {"cwscale", FLOAT, &cwscale},
    {"chscale", FLOAT, &chscale},
};

/*
 * Internal mouse shortcuts.
 * Beware that overloading Button1 will disable the selection.
 */
static MouseShortcut mshortcuts[] = {
    /* mask                 button   function        argument       release */
    {ShiftMask, Button4, kscrollup, {.i = 1}},
    {ShiftMask, Button5, kscrolldown, {.i = 1}},
    {XK_ANY_MOD, Button2, selpaste, {.i = 0}, 1},
    {ShiftMask, Button4, ttysend, {.s = "\033[5;2~"}},
    {XK_ANY_MOD, Button4, ttysend, {.s = "\031"}},
    {ShiftMask, Button5, ttysend, {.s = "\033[6;2~"}},
    {XK_ANY_MOD, Button5, ttysend, {.s = "\005"}},
};

/* Internal keyboard shortcuts. */
#define MODKEY Mod1Mask
#define TERMMOD (ControlMask | ShiftMask)

static Shortcut shortcuts[] = {
    /* mask                 keysym          function        argument */
    {XK_ANY_MOD, XK_Break, sendbreak, {.i = 0}},
    {ControlMask, XK_Print, toggleprinter, {.i = 0}},
    {ShiftMask, XK_Print, printscreen, {.i = 0}},
    {XK_ANY_MOD, XK_Print, printsel, {.i = 0}},
    {TERMMOD, XK_Prior, zoom, {.f = +1}},
    {TERMMOD, XK_Next, zoom, {.f = -1}},
    {TERMMOD, XK_Home, zoomreset, {.f = 0}},
    {TERMMOD, XK_C, clipcopy, {.i = 0}},
    {TERMMOD, XK_V, clippaste, {.i = 0}},
    {TERMMOD, XK_Y, selpaste, {.i = 0}},
    {ShiftMask, XK_Insert, selpaste, {.i = 0}},
    {TERMMOD, XK_Num_Lock, numlock, {.i = 0}},
    {ShiftMask, XK_Page_Up, kscrollup, {.i = -1}},
    {ShiftMask, XK_Page_Down, kscrolldown, {.i = -1}},
};

/*
 * Special keys (change & recompile st.info accordingly)
 *
 * Mask value:
 * * Use XK_ANY_MOD to match the key no matter modifiers state
 * * Use XK_NO_MOD to match the key alone (no modifiers)
 * appkey value:
 * * 0: no value
 * * > 0: keypad application mode enabled
 * *   = 2: term.numlock = 1
 * * < 0: keypad application mode disabled
 * appcursor value:
 * * 0: no value
 * * > 0: cursor application mode enabled
 * * < 0: cursor application mode disabled
 *
 * Be careful with the order of the definitions because st searches in
 * this table sequentially, so any XK_ANY_MOD must be in the last
 * position for a key.
 */

/*
 * If you want keys other than the X11 function keys (0xFD00 - 0xFFFF)
 * to be mapped below, add them to this array.
 */
static KeySym mappedkeys[] = {-1};

/*
 * State bits to ignore when matching key or button events.  By default,
 * numlock (Mod2Mask) and keyboard layout (XK_SWITCH_MOD) are ignored.
 */
static uint ignoremod = Mod2Mask | XK_SWITCH_MOD;

/*
 * This is the huge key array which defines all compatibility to the Linux
 * world. Please decide about changes wisely.
 */
static Key key[] = {
    /* keysym           mask            string      appkey appcursor */
    {XK_KP_Home, ShiftMask, "\033[2J", 0, -1},
    {XK_KP_Home, ShiftMask, "\033[1;2H", 0, +1},
    {XK_KP_Home, XK_ANY_MOD, "\033[H", 0, -1},
    {XK_KP_Home, XK_ANY_MOD, "\033[1~", 0, +1},
    {XK_KP_Up, XK_ANY_MOD, "\033Ox", +1, 0},
    {XK_KP_Up, XK_ANY_MOD, "\033[A", 0, -1},
    {XK_KP_Up, XK_ANY_MOD, "\033OA", 0, +1},
    {XK_KP_Down, XK_ANY_MOD, "\033Or", +1, 0},
    {XK_KP_Down, XK_ANY_MOD, "\033[B", 0, -1},
    {XK_KP_Down, XK_ANY_MOD, "\033OB", 0, +1},
    {XK_KP_Left, XK_ANY_MOD, "\033Ot", +1, 0},
    {XK_KP_Left, XK_ANY_MOD, "\033[D", 0, -1},
    {XK_KP_Left, XK_ANY_MOD, "\033OD", 0, +1},
    {XK_KP_Right, XK_ANY_MOD, "\033Ov", +1, 0},
    {XK_KP_Right, XK_ANY_MOD, "\033[C", 0, -1},
    {XK_KP_Right, XK_ANY_MOD, "\033OC", 0, +1},
    {XK_KP_Prior, ShiftMask, "\033[5;2~", 0, 0},
    {XK_KP_Prior, XK_ANY_MOD, "\033[5~", 0, 0},
    {XK_KP_Begin, XK_ANY_MOD, "\033[E", 0, 0},
    {XK_KP_End, ControlMask, "\033[J", -1, 0},
    {XK_KP_End, ControlMask, "\033[1;5F", +1, 0},
    {XK_KP_End, ShiftMask, "\033[K", -1, 0},
    {XK_KP_End, ShiftMask, "\033[1;2F", +1, 0},
    {XK_KP_End, XK_ANY_MOD, "\033[4~", 0, 0},
    {XK_KP_Next, ShiftMask, "\033[6;2~", 0, 0},
    {XK_KP_Next, XK_ANY_MOD, "\033[6~", 0, 0},
    {XK_KP_Insert, ShiftMask, "\033[2;2~", +1, 0},
    {XK_KP_Insert, ShiftMask, "\033[4l", -1, 0},
    {XK_KP_Insert, ControlMask, "\033[L", -1, 0},
    {XK_KP_Insert, ControlMask, "\033[2;5~", +1, 0},
    {XK_KP_Insert, XK_ANY_MOD, "\033[4h", -1, 0},
    {XK_KP_Insert, XK_ANY_MOD, "\033[2~", +1, 0},
    {XK_KP_Delete, ControlMask, "\033[M", -1, 0},
    {XK_KP_Delete, ControlMask, "\033[3;5~", +1, 0},
    {XK_KP_Delete, ShiftMask, "\033[2K", -1, 0},
    {XK_KP_Delete, ShiftMask, "\033[3;2~", +1, 0},
    {XK_KP_Delete, XK_ANY_MOD, "\033[P", -1, 0},
    {XK_KP_Delete, XK_ANY_MOD, "\033[3~", +1, 0},
    {XK_KP_Multiply, XK_ANY_MOD, "\033Oj", +2, 0},
    {XK_KP_Add, XK_ANY_MOD, "\033Ok", +2, 0},
    {XK_KP_Enter, XK_ANY_MOD, "\033OM", +2, 0},
    {XK_KP_Enter, XK_ANY_MOD, "\r", -1, 0},
    {XK_KP_Subtract, XK_ANY_MOD, "\033Om", +2, 0},
    {XK_KP_Decimal, XK_ANY_MOD, "\033On", +2, 0},
    {XK_KP_Divide, XK_ANY_MOD, "\033Oo", +2, 0},
    {XK_KP_0, XK_ANY_MOD, "\033Op", +2, 0},
    {XK_KP_1, XK_ANY_MOD, "\033Oq", +2, 0},
    {XK_KP_2, XK_ANY_MOD, "\033Or", +2, 0},
    {XK_KP_3, XK_ANY_MOD, "\033Os", +2, 0},
    {XK_KP_4, XK_ANY_MOD, "\033Ot", +2, 0},
    {XK_KP_5, XK_ANY_MOD, "\033Ou", +2, 0},
    {XK_KP_6, XK_ANY_MOD, "\033Ov", +2, 0},
    {XK_KP_7, XK_ANY_MOD, "\033Ow", +2, 0},
    {XK_KP_8, XK_ANY_MOD, "\033Ox", +2, 0},
    {XK_KP_9, XK_ANY_MOD, "\033Oy", +2, 0},
    {XK_Up, ShiftMask, "\033[1;2A", 0, 0},
    {XK_Up, Mod1Mask, "\033[1;3A", 0, 0},
    {XK_Up, ShiftMask | Mod1Mask, "\033[1;4A", 0, 0},
    {XK_Up, ControlMask, "\033[1;5A", 0, 0},
    {XK_Up, ShiftMask | ControlMask, "\033[1;6A", 0, 0},
    {XK_Up, ControlMask | Mod1Mask, "\033[1;7A", 0, 0},
    {XK_Up, ShiftMask | ControlMask | Mod1Mask, "\033[1;8A", 0, 0},
    {XK_Up, XK_ANY_MOD, "\033[A", 0, -1},
    {XK_Up, XK_ANY_MOD, "\033OA", 0, +1},
    {XK_Down, ShiftMask, "\033[1;2B", 0, 0},
    {XK_Down, Mod1Mask, "\033[1;3B", 0, 0},
    {XK_Down, ShiftMask | Mod1Mask, "\033[1;4B", 0, 0},
    {XK_Down, ControlMask, "\033[1;5B", 0, 0},
    {XK_Down, ShiftMask | ControlMask, "\033[1;6B", 0, 0},
    {XK_Down, ControlMask | Mod1Mask, "\033[1;7B", 0, 0},
    {XK_Down, ShiftMask | ControlMask | Mod1Mask, "\033[1;8B", 0, 0},
    {XK_Down, XK_ANY_MOD, "\033[B", 0, -1},
    {XK_Down, XK_ANY_MOD, "\033OB", 0, +1},
    {XK_Left, ShiftMask, "\033[1;2D", 0, 0},
    {XK_Left, Mod1Mask, "\033[1;3D", 0, 0},
    {XK_Left, ShiftMask | Mod1Mask, "\033[1;4D", 0, 0},
    {XK_Left, ControlMask, "\033[1;5D", 0, 0},
    {XK_Left, ShiftMask | ControlMask, "\033[1;6D", 0, 0},
    {XK_Left, ControlMask | Mod1Mask, "\033[1;7D", 0, 0},
    {XK_Left, ShiftMask | ControlMask | Mod1Mask, "\033[1;8D", 0, 0},
    {XK_Left, XK_ANY_MOD, "\033[D", 0, -1},
    {XK_Left, XK_ANY_MOD, "\033OD", 0, +1},
    {XK_Right, ShiftMask, "\033[1;2C", 0, 0},
    {XK_Right, Mod1Mask, "\033[1;3C", 0, 0},
    {XK_Right, ShiftMask | Mod1Mask, "\033[1;4C", 0, 0},
    {XK_Right, ControlMask, "\033[1;5C", 0, 0},
    {XK_Right, ShiftMask | ControlMask, "\033[1;6C", 0, 0},
    {XK_Right, ControlMask | Mod1Mask, "\033[1;7C", 0, 0},
    {XK_Right, ShiftMask | ControlMask | Mod1Mask, "\033[1;8C", 0, 0},
    {XK_Right, XK_ANY_MOD, "\033[C", 0, -1},
    {XK_Right, XK_ANY_MOD, "\033OC", 0, +1},
    {XK_ISO_Left_Tab, ShiftMask, "\033[Z", 0, 0},
    {XK_Return, Mod1Mask, "\033\r", 0, 0},
    {XK_Return, XK_ANY_MOD, "\r", 0, 0},
    {XK_Insert, ShiftMask, "\033[4l", -1, 0},
    {XK_Insert, ShiftMask, "\033[2;2~", +1, 0},
    {XK_Insert, ControlMask, "\033[L", -1, 0},
    {XK_Insert, ControlMask, "\033[2;5~", +1, 0},
    {XK_Insert, XK_ANY_MOD, "\033[4h", -1, 0},
    {XK_Insert, XK_ANY_MOD, "\033[2~", +1, 0},
    {XK_Delete, ControlMask, "\033[M", -1, 0},
    {XK_Delete, ControlMask, "\033[3;5~", +1, 0},
    {XK_Delete, ShiftMask, "\033[2K", -1, 0},
    {XK_Delete, ShiftMask, "\033[3;2~", +1, 0},
    {XK_Delete, XK_ANY_MOD, "\033[P", -1, 0},
    {XK_Delete, XK_ANY_MOD, "\033[3~", +1, 0},
    {XK_BackSpace, XK_NO_MOD, "\177", 0, 0},
    {XK_BackSpace, Mod1Mask, "\033\177", 0, 0},
    {XK_Home, ShiftMask, "\033[2J", 0, -1},
    {XK_Home, ShiftMask, "\033[1;2H", 0, +1},
    {XK_Home, XK_ANY_MOD, "\033[H", 0, -1},
    {XK_Home, XK_ANY_MOD, "\033[1~", 0, +1},
    {XK_End, ControlMask, "\033[J", -1, 0},
    {XK_End, ControlMask, "\033[1;5F", +1, 0},
    {XK_End, ShiftMask, "\033[K", -1, 0},
    {XK_End, ShiftMask, "\033[1;2F", +1, 0},
    {XK_End, XK_ANY_MOD, "\033[4~", 0, 0},
    {XK_Prior, ControlMask, "\033[5;5~", 0, 0},
    {XK_Prior, ShiftMask, "\033[5;2~", 0, 0},
    {XK_Prior, XK_ANY_MOD, "\033[5~", 0, 0},
    {XK_Next, ControlMask, "\033[6;5~", 0, 0},
    {XK_Next, ShiftMask, "\033[6;2~", 0, 0},
    {XK_Next, XK_ANY_MOD, "\033[6~", 0, 0},
    {XK_F1, XK_NO_MOD, "\033OP", 0, 0},
    {XK_F1, /* F13 */ ShiftMask, "\033[1;2P", 0, 0},
    {XK_F1, /* F25 */ ControlMask, "\033[1;5P", 0, 0},
    {XK_F1, /* F37 */ Mod4Mask, "\033[1;6P", 0, 0},
    {XK_F1, /* F49 */ Mod1Mask, "\033[1;3P", 0, 0},
    {XK_F1, /* F61 */ Mod3Mask, "\033[1;4P", 0, 0},
    {XK_F2, XK_NO_MOD, "\033OQ", 0, 0},
    {XK_F2, /* F14 */ ShiftMask, "\033[1;2Q", 0, 0},
    {XK_F2, /* F26 */ ControlMask, "\033[1;5Q", 0, 0},
    {XK_F2, /* F38 */ Mod4Mask, "\033[1;6Q", 0, 0},
    {XK_F2, /* F50 */ Mod1Mask, "\033[1;3Q", 0, 0},
    {XK_F2, /* F62 */ Mod3Mask, "\033[1;4Q", 0, 0},
    {XK_F3, XK_NO_MOD, "\033OR", 0, 0},
    {XK_F3, /* F15 */ ShiftMask, "\033[1;2R", 0, 0},
    {XK_F3, /* F27 */ ControlMask, "\033[1;5R", 0, 0},
    {XK_F3, /* F39 */ Mod4Mask, "\033[1;6R", 0, 0},
    {XK_F3, /* F51 */ Mod1Mask, "\033[1;3R", 0, 0},
    {XK_F3, /* F63 */ Mod3Mask, "\033[1;4R", 0, 0},
    {XK_F4, XK_NO_MOD, "\033OS", 0, 0},
    {XK_F4, /* F16 */ ShiftMask, "\033[1;2S", 0, 0},
    {XK_F4, /* F28 */ ControlMask, "\033[1;5S", 0, 0},
    {XK_F4, /* F40 */ Mod4Mask, "\033[1;6S", 0, 0},
    {XK_F4, /* F52 */ Mod1Mask, "\033[1;3S", 0, 0},
    {XK_F5, XK_NO_MOD, "\033[15~", 0, 0},
    {XK_F5, /* F17 */ ShiftMask, "\033[15;2~", 0, 0},
    {XK_F5, /* F29 */ ControlMask, "\033[15;5~", 0, 0},
    {XK_F5, /* F41 */ Mod4Mask, "\033[15;6~", 0, 0},
    {XK_F5, /* F53 */ Mod1Mask, "\033[15;3~", 0, 0},
    {XK_F6, XK_NO_MOD, "\033[17~", 0, 0},
    {XK_F6, /* F18 */ ShiftMask, "\033[17;2~", 0, 0},
    {XK_F6, /* F30 */ ControlMask, "\033[17;5~", 0, 0},
    {XK_F6, /* F42 */ Mod4Mask, "\033[17;6~", 0, 0},
    {XK_F6, /* F54 */ Mod1Mask, "\033[17;3~", 0, 0},
    {XK_F7, XK_NO_MOD, "\033[18~", 0, 0},
    {XK_F7, /* F19 */ ShiftMask, "\033[18;2~", 0, 0},
    {XK_F7, /* F31 */ ControlMask, "\033[18;5~", 0, 0},
    {XK_F7, /* F43 */ Mod4Mask, "\033[18;6~", 0, 0},
    {XK_F7, /* F55 */ Mod1Mask, "\033[18;3~", 0, 0},
    {XK_F8, XK_NO_MOD, "\033[19~", 0, 0},
    {XK_F8, /* F20 */ ShiftMask, "\033[19;2~", 0, 0},
    {XK_F8, /* F32 */ ControlMask, "\033[19;5~", 0, 0},
    {XK_F8, /* F44 */ Mod4Mask, "\033[19;6~", 0, 0},
    {XK_F8, /* F56 */ Mod1Mask, "\033[19;3~", 0, 0},
    {XK_F9, XK_NO_MOD, "\033[20~", 0, 0},
    {XK_F9, /* F21 */ ShiftMask, "\033[20;2~", 0, 0},
    {XK_F9, /* F33 */ ControlMask, "\033[20;5~", 0, 0},
    {XK_F9, /* F45 */ Mod4Mask, "\033[20;6~", 0, 0},
    {XK_F9, /* F57 */ Mod1Mask, "\033[20;3~", 0, 0},
    {XK_F10, XK_NO_MOD, "\033[21~", 0, 0},
    {XK_F10, /* F22 */ ShiftMask, "\033[21;2~", 0, 0},
    {XK_F10, /* F34 */ ControlMask, "\033[21;5~", 0, 0},
    {XK_F10, /* F46 */ Mod4Mask, "\033[21;6~", 0, 0},
    {XK_F10, /* F58 */ Mod1Mask, "\033[21;3~", 0, 0},
    {XK_F11, XK_NO_MOD, "\033[23~", 0, 0},
    {XK_F11, /* F23 */ ShiftMask, "\033[23;2~", 0, 0},
    {XK_F11, /* F35 */ ControlMask, "\033[23;5~", 0, 0},
    {XK_F11, /* F47 */ Mod4Mask, "\033[23;6~", 0, 0},
    {XK_F11, /* F59 */ Mod1Mask, "\033[23;3~", 0, 0},
    {XK_F12, XK_NO_MOD, "\033[24~", 0, 0},
    {XK_F12, /* F24 */ ShiftMask, "\033[24;2~", 0, 0},
    {XK_F12, /* F36 */ ControlMask, "\033[24;5~", 0, 0},
    {XK_F12, /* F48 */ Mod4Mask, "\033[24;6~", 0, 0},
    {XK_F12, /* F60 */ Mod1Mask, "\033[24;3~", 0, 0},
    {XK_F13, XK_NO_MOD, "\033[1;2P", 0, 0},
    {XK_F14, XK_NO_MOD, "\033[1;2Q", 0, 0},
    {XK_F15, XK_NO_MOD, "\033[1;2R", 0, 0},
    {XK_F16, XK_NO_MOD, "\033[1;2S", 0, 0},
    {XK_F17, XK_NO_MOD, "\033[15;2~", 0, 0},
    {XK_F18, XK_NO_MOD, "\033[17;2~", 0, 0},
    {XK_F19, XK_NO_MOD, "\033[18;2~", 0, 0},
    {XK_F20, XK_NO_MOD, "\033[19;2~", 0, 0},
    {XK_F21, XK_NO_MOD, "\033[20;2~", 0, 0},
    {XK_F22, XK_NO_MOD, "\033[21;2~", 0, 0},
    {XK_F23, XK_NO_MOD, "\033[23;2~", 0, 0},
    {XK_F24, XK_NO_MOD, "\033[24;2~", 0, 0},
    {XK_F25, XK_NO_MOD, "\033[1;5P", 0, 0},
    {XK_F26, XK_NO_MOD, "\033[1;5Q", 0, 0},
    {XK_F27, XK_NO_MOD, "\033[1;5R", 0, 0},
    {XK_F28, XK_NO_MOD, "\033[1;5S", 0, 0},
    {XK_F29, XK_NO_MOD, "\033[15;5~", 0, 0},
    {XK_F30, XK_NO_MOD, "\033[17;5~", 0, 0},
    {XK_F31, XK_NO_MOD, "\033[18;5~", 0, 0},
    {XK_F32, XK_NO_MOD, "\033[19;5~", 0, 0},
    {XK_F33, XK_NO_MOD, "\033[20;5~", 0, 0},
    {XK_F34, XK_NO_MOD, "\033[21;5~", 0, 0},
    {XK_F35, XK_NO_MOD, "\033[23;5~", 0, 0},
};

/*
 * Selection types' masks.
 * Use the same masks as usual.
 * Button1Mask is always unset, to make masks match between ButtonPress.
 * ButtonRelease and MotionNotify.
 * If no match is found, regular selection is used.
 */
static uint selmasks[] = {
    [SEL_RECTANGULAR] = Mod1Mask,
};

/*
 * Printable characters in ASCII, used to estimate the advance width
 * of single wide characters.
 */
static char ascii_printable[] = " !\"#$%&'()*+,-./0123456789:;<=>?"
                                "@ABCDEFGHIJKLMNOPQRSTUVWXYZ[\\]^_"
                                "`abcdefghijklmnopqrstuvwxyz{|}~";