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Use indentation to increase readability

Browse source 
Granted, this style is definitely not common, but for the short
utility-functions of this program it's just the right choice. This
provides great flexibility, such that in the long run, it will be
possible to also share code between the OS-implementations.

This also keeps the state-keeping at a minimum and makes it clearer
which functions are implemented on which OS without having to jiggle
around with too many files in the process.
This commit is contained in:
Laslo Hunhold 2018-05-01 19:01:22 +02:00 committed by Aaron Marcher
parent 42edfea89a
commit 9750a3d731
9 changed files with 556 additions and 522 deletions
Show stats Download patch file Download diff file Expand all files Collapse all files

2
LICENSE
View file

@ -11,7 +11,7 @@ Copyright 2016-2017 Quentin Rameau <quinq@fifth.space>
Copyright 2016 Mike Coddington <mike@coddington.us>
Copyright 2016-2018 parazyd <parazyd@dyne.org>
Copyright 2017 Tobias Stoeckmann <tobias@stoeckmann.org>
Copyright 2017 Laslo Hunhold <dev@frign.de>
Copyright 2017-2018 Laslo Hunhold <dev@frign.de>
Copyright 2018 Darron Anderson <darronanderson@protonmail.com>
Permission to use, copy, modify, and/or distribute this software for any

94
components/battery.c
View file

@ -2,68 +2,39 @@
#include <errno.h>
#include <stdio.h>
#include <string.h>
#if defined(__linux__)
#include <limits.h>
#include <string.h>
#elif defined(__OpenBSD__)
#include <sys/ioctl.h>
#include <fcntl.h>
#include <unistd.h>
#include <machine/apmvar.h>
#endif
#include "../util.h"
#if defined(__linux__)
const char *
battery_perc(const char *bat)
{
#include <limits.h>
const char *
battery_perc(const char *bat)
{
int perc;
char path[PATH_MAX];
snprintf(path, sizeof(path), "%s%s%s", "/sys/class/power_supply/", bat, "/capacity");
snprintf(path, sizeof(path), "%s%s%s", "/sys/class/power_supply/",
bat, "/capacity");
return (pscanf(path, "%i", &perc) == 1) ?
bprintf("%d", perc) : NULL;
}
#elif defined(__OpenBSD__)
const char *
battery_perc(const char *null)
{
struct apm_power_info apm_info;
int fd;
fd = open("/dev/apm", O_RDONLY);
if (fd < 0) {
fprintf(stderr, "open '/dev/apm': %s\n", strerror(errno));
return NULL;
}
if (ioctl(fd, APM_IOC_GETPOWER, &apm_info) < 0) {
fprintf(stderr, "ioctl 'APM_IOC_GETPOWER': %s\n", strerror(errno));
close(fd);
return NULL;
}
close(fd);
return bprintf("%d", apm_info.battery_life);
}
#endif
#if defined(__linux__)
const char *
battery_power(const char *bat)
{
const char *
battery_power(const char *bat)
{
int watts;
char path[PATH_MAX];
snprintf(path, sizeof(path), "%s%s%s", "/sys/class/power_supply/", bat, "/power_now");
snprintf(path, sizeof(path), "%s%s%s", "/sys/class/power_supply/",
bat, "/power_now");
return (pscanf(path, "%i", &watts) == 1) ?
bprintf("%d", (watts + 500000) / 1000000) : NULL;
}
}
const char *
battery_state(const char *bat)
{
const char *
battery_state(const char *bat)
{
struct {
char *state;
char *symbol;
@ -76,7 +47,8 @@ battery_state(const char *bat)
size_t i;
char path[PATH_MAX], state[12];
snprintf(path, sizeof(path), "%s%s%s", "/sys/class/power_supply/", bat, "/status");
snprintf(path, sizeof(path), "%s%s%s", "/sys/class/power_supply/",
bat, "/status");
if (pscanf(path, "%12s", state) != 1) {
return NULL;
}
@ -87,5 +59,33 @@ battery_state(const char *bat)
}
}
return (i == LEN(map)) ? "?" : map[i].symbol;
}
}
#elif defined(__OpenBSD__)
#include <fcntl.h>
#include <machine/apmvar.h>
#include <sys/ioctl.h>
#include <unistd.h>
const char *
battery_perc(const char *null)
{
struct apm_power_info apm_info;
int fd;
fd = open("/dev/apm", O_RDONLY);
if (fd < 0) {
fprintf(stderr, "open '/dev/apm': %s\n", strerror(errno));
return NULL;
}
if (ioctl(fd, APM_IOC_GETPOWER, &apm_info) < 0) {
fprintf(stderr, "ioctl 'APM_IOC_GETPOWER': %s\n",
strerror(errno));
close(fd);
return NULL;
}
close(fd);
return bprintf("%d", apm_info.battery_life);
}
#endif

58
components/cpu.c
View file

@ -2,34 +2,31 @@
#include <errno.h>
#include <stdio.h>
#include <string.h>
#if defined(__OpenBSD__)
#include <sys/sysctl.h>
#endif
#include "../util.h"
#if defined(__linux__)
const char *
cpu_freq(void)
{
const char *
cpu_freq(void)
{
int freq;
return (pscanf("/sys/devices/system/cpu/cpu0/cpufreq/scaling_cur_freq",
"%i", &freq) == 1) ?
bprintf("%d", (freq + 500) / 1000) : NULL;
}
}
const char *
cpu_perc(void)
{
const char *
cpu_perc(void)
{
int perc;
static long double a[7];
static int valid;
long double b[7];
memcpy(b, a, sizeof(b));
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) {
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 (!valid) {
@ -37,23 +34,26 @@ cpu_perc(void)
return NULL;
}
perc = 100 * ((b[0]+b[1]+b[2]+b[5]+b[6]) - (a[0]+a[1]+a[2]+a[5]+a[6])) /
((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]));
perc = 100 *
((b[0]+b[1]+b[2]+b[5]+b[6]) -
(a[0]+a[1]+a[2]+a[5]+a[6])) /
((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]));
return bprintf("%d", perc);
}
}
const char *
cpu_iowait(void)
{
const char *
cpu_iowait(void)
{
int perc;
static int valid;
static long double a[7];
long double b[7];
memcpy(b, a, sizeof(b));
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) {
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 (!valid) {
@ -62,14 +62,17 @@ cpu_iowait(void)
}
perc = 100 * ((b[4]) - (a[4])) /
((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]));
((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]));
return bprintf("%d", perc);
}
}
#elif defined(__OpenBSD__)
const char *
cpu_freq(void)
{
#include <sys/sysctl.h>
const char *
cpu_freq(void)
{
int freq, mib[2];
size_t size;
@ -79,10 +82,11 @@ cpu_freq(void)
size = sizeof(freq);
if (sysctl(mib, 2, &freq, &size, NULL, 0) == -1) {
fprintf(stderr, "sysctl 'HW_CPUSPEED': %s\n", strerror(errno));
fprintf(stderr, "sysctl 'HW_CPUSPEED': %s\n",
strerror(errno));
return NULL;
}
return bprintf("%d", freq);
}
}
#endif

17
components/entropy.c
View file

@ -1,15 +1,18 @@
/* See LICENSE file for copyright and license details. */
#if defined(__linux__)
#include <stdio.h>
#include <stdio.h>
#include "../util.h"
#include "../util.h"
const char *
entropy(void)
{
const char *
entropy(void)
{
int num;
return (pscanf("/proc/sys/kernel/random/entropy_avail", "%d", &num) == 1) ?
return (pscanf("/proc/sys/kernel/random/entropy_avail",
"%d", &num) == 1) ?
bprintf("%d", num) : NULL;
}
}
#elif defined(__OpenBSD__)
/* unimplemented */
#endif

98
components/ram.c
View file

@ -1,27 +1,21 @@
/* See LICENSE file for copyright and license details. */
#include <stdio.h>
#if defined (__OpenBSD__)
#include <sys/types.h>
#include <sys/sysctl.h>
#include <stdlib.h>
#include <unistd.h>
#endif
#include "../util.h"
#if defined(__linux__)
const char *
ram_free(void)
{
const char *
ram_free(void)
{
long free;
return (pscanf("/proc/meminfo", "MemFree: %ld kB\n", &free) == 1) ?
bprintf("%f", (float)free / 1024 / 1024) : NULL;
}
}
const char *
ram_perc(void)
{
const char *
ram_perc(void)
{
long total, free, buffers, cached;
return (pscanf("/proc/meminfo",
@ -30,22 +24,23 @@ ram_perc(void)
"MemAvailable: %ld kB\nBuffers: %ld kB\n"
"Cached: %ld kB\n",
&total, &free, &buffers, &buffers, &cached) == 5) ?
bprintf("%d", 100 * ((total - free) - (buffers + cached)) / total) :
bprintf("%d", 100 * ((total - free) - (buffers + cached)) /
total) :
NULL;
}
}
const char *
ram_total(void)
{
const char *
ram_total(void)
{
long total;
return (pscanf("/proc/meminfo", "MemTotal: %ld kB\n", &total) == 1) ?
bprintf("%f", (float)total / 1024 / 1024) : NULL;
}
}
const char *
ram_used(void)
{
const char *
ram_used(void)
{
long total, free, buffers, cached;
return (pscanf("/proc/meminfo",
@ -54,40 +49,47 @@ ram_used(void)
"MemAvailable: %ld kB\nBuffers: %ld kB\n"
"Cached: %ld kB\n",
&total, &free, &buffers, &buffers, &cached) == 5) ?
bprintf("%f", (float)(total - free - buffers - cached) / 1024 / 1024) :
bprintf("%f", (float)(total - free - buffers - cached) /
1024 / 1024) :
NULL;
}
}
#elif defined(__OpenBSD__)
inline int
load_uvmexp(struct uvmexp *uvmexp)
{
#include <sys/types.h>
#include <sys/sysctl.h>
#include <stdlib.h>
#include <unistd.h>
inline int
load_uvmexp(struct uvmexp *uvmexp)
{
int uvmexp_mib[] = {CTL_VM, VM_UVMEXP};
size_t size;
size = sizeof(*uvmexp);
return sysctl(uvmexp_mib, 2, uvmexp, &size, NULL, 0) >= 0 ? 1 : 0;
}
}
const char *
ram_free(void)
{
const char *
ram_free(void)
{
struct uvmexp uvmexp;
float free;
int free_pages;
if (load_uvmexp(&uvmexp)) {
free_pages = uvmexp.npages - uvmexp.active;
free = (double) (free_pages * uvmexp.pagesize) / 1024 / 1024 / 1024;
free = (double) (free_pages * uvmexp.pagesize) / 1024 /
1024 / 1024;
return bprintf("%f", free);
}
return NULL;
}
}
const char *
ram_perc(void)
{
const char *
ram_perc(void)
{
struct uvmexp uvmexp;
int percent;
@ -97,33 +99,35 @@ ram_perc(void)
}
return NULL;
}
}
const char *
ram_total(void)
{
const char *
ram_total(void)
{
struct uvmexp uvmexp;
float total;
if (load_uvmexp(&uvmexp)) {
total = (double) (uvmexp.npages * uvmexp.pagesize) / 1024 / 1024 / 1024;
total = (double) (uvmexp.npages * uvmexp.pagesize) /
1024 / 1024 / 1024;
return bprintf("%f", total);
}
return NULL;
}
}
const char *
ram_used(void)
{
const char *
ram_used(void)
{
struct uvmexp uvmexp;
float used;
if (load_uvmexp(&uvmexp)) {
used = (double) (uvmexp.active * uvmexp.pagesize) / 1024 / 1024 / 1024;
used = (double) (uvmexp.active * uvmexp.pagesize) /
1024 / 1024 / 1024;
return bprintf("%f", used);
}
return NULL;
}
}
#endif

78
components/swap.c
View file

@ -1,14 +1,14 @@
/* See LICENSE file for copyright and license details. */
#if defined(__linux__)
#include <errno.h>
#include <stdio.h>
#include <string.h>
#include <errno.h>
#include <stdio.h>
#include <string.h>
#include "../util.h"
#include "../util.h"
const char *
swap_free(void)
{
const char *
swap_free(void)
{
long total, free;
FILE *fp;
size_t bytes_read;
@ -16,12 +16,15 @@ swap_free(void)
fp = fopen("/proc/meminfo", "r");
if (fp == NULL) {
fprintf(stderr, "fopen '/proc/meminfo': %s\n", strerror(errno));
fprintf(stderr, "fopen '/proc/meminfo': %s\n",
strerror(errno));
return NULL;
}
if ((bytes_read = fread(buf, sizeof(char), sizeof(buf) - 1, fp)) == 0) {
fprintf(stderr, "fread '/proc/meminfo': %s\n", strerror(errno));
if ((bytes_read = fread(buf, sizeof(char), sizeof(buf) - 1,
fp)) == 0) {
fprintf(stderr, "fread '/proc/meminfo': %s\n",
strerror(errno));
fclose(fp);
return NULL;
}
@ -36,11 +39,11 @@ swap_free(void)
sscanf(match, "SwapFree: %ld kB\n", &free);
return bprintf("%f", (float)free / 1024 / 1024);
}
}
const char *
swap_perc(void)
{
const char *
swap_perc(void)
{
long total, free, cached;
FILE *fp;
size_t bytes_read;
@ -48,12 +51,15 @@ swap_perc(void)
fp = fopen("/proc/meminfo", "r");
if (fp == NULL) {
fprintf(stderr, "fopen '/proc/meminfo': %s\n", strerror(errno));
fprintf(stderr, "fopen '/proc/meminfo': %s\n",
strerror(errno));
return NULL;
}
if ((bytes_read = fread(buf, sizeof(char), sizeof(buf) - 1, fp)) == 0) {
fprintf(stderr, "fread '/proc/meminfo': %s\n", strerror(errno));
if ((bytes_read = fread(buf, sizeof(char), sizeof(buf) - 1,
fp)) == 0) {
fprintf(stderr, "fread '/proc/meminfo': %s\n",
strerror(errno));
fclose(fp);
return NULL;
}
@ -72,11 +78,11 @@ swap_perc(void)
sscanf(match, "SwapFree: %ld kB\n", &free);
return bprintf("%d", 100 * (total - free - cached) / total);
}
}
const char *
swap_total(void)
{
const char *
swap_total(void)
{
long total;
FILE *fp;
size_t bytes_read;
@ -84,11 +90,14 @@ swap_total(void)
fp = fopen("/proc/meminfo", "r");
if (fp == NULL) {
fprintf(stderr, "fopen '/proc/meminfo': %s\n", strerror(errno));
fprintf(stderr, "fopen '/proc/meminfo': %s\n",
strerror(errno));
return NULL;
}
if ((bytes_read = fread(buf, sizeof(char), sizeof(buf) - 1, fp)) == 0) {
fprintf(stderr, "fread '/proc/meminfo': %s\n", strerror(errno));
if ((bytes_read = fread(buf, sizeof(char), sizeof(buf) - 1,
fp)) == 0) {
fprintf(stderr, "fread '/proc/meminfo': %s\n",
strerror(errno));
fclose(fp);
return NULL;
}
@ -99,11 +108,11 @@ swap_total(void)
sscanf(match, "SwapTotal: %ld kB\n", &total);
return bprintf("%f", (float)total / 1024 / 1024);
}
}
const char *
swap_used(void)
{
const char *
swap_used(void)
{
long total, free, cached;
FILE *fp;
size_t bytes_read;
@ -111,11 +120,14 @@ swap_used(void)
fp = fopen("/proc/meminfo", "r");
if (fp == NULL) {
fprintf(stderr, "fopen '/proc/meminfo': %s\n", strerror(errno));
fprintf(stderr, "fopen '/proc/meminfo': %s\n",
strerror(errno));
return NULL;
}
if ((bytes_read = fread(buf, sizeof(char), sizeof(buf) - 1, fp)) == 0) {
fprintf(stderr, "fread '/proc/meminfo': %s\n", strerror(errno));
if ((bytes_read = fread(buf, sizeof(char), sizeof(buf) - 1,
fp)) == 0) {
fprintf(stderr, "fread '/proc/meminfo': %s\n",
strerror(errno));
fclose(fp);
return NULL;
}
@ -134,5 +146,7 @@ swap_used(void)
sscanf(match, "SwapFree: %ld kB\n", &free);
return bprintf("%f", (float)(total - free - cached) / 1024 / 1024);
}
}
#elif defined(__OpenBSD__)
/* unimplemented */
#endif

38
components/temperature.c
View file

@ -1,28 +1,28 @@
/* See LICENSE file for copyright and license details. */
#include <errno.h>
#include <stdio.h>
#include <string.h>
#if defined(__OpenBSD__)
#include <sys/sysctl.h>
#include <sys/time.h>
#include <sys/sensors.h>
#endif
#include <stddef.h>
#include "../util.h"
#if defined(__linux__)
const char *
temp(const char *file)
{
const char *
temp(const char *file)
{
int temp;
return (pscanf(file, "%d", &temp) == 1) ?
bprintf("%d", temp / 1000) : NULL;
}
}
#elif defined(__OpenBSD__)
const char *
temp(const char *null)
{
#include <errno.h>
#include <stdio.h>
#include <string.h>
#include <sys/sysctl.h>
#include <sys/time.h>
#include <sys/sensors.h>
const char *
temp(const char *null)
{
int mib[5];
size_t size;
struct sensor temp;
@ -36,10 +36,12 @@ temp(const char *null)
size = sizeof(temp);
if (sysctl(mib, 5, &temp, &size, NULL, 0) == -1) {
fprintf(stderr, "sysctl 'SENSOR_TEMP': %s\n", strerror(errno));
fprintf(stderr, "sysctl 'SENSOR_TEMP': %s\n",
strerror(errno));
return NULL;
}
return bprintf("%d", (temp.value - 273150000) / 1000000); /* kelvin to celsius */
}
/* kelvin to celsius */
return bprintf("%d", (temp.value - 273150000) / 1000000);
}
#endif

27
components/uptime.c
View file

@ -2,19 +2,15 @@
#include <errno.h>
#include <stdio.h>
#include <string.h>
#if defined(__linux__)
#include <sys/sysinfo.h>
#elif defined(__OpenBSD__)
#include <sys/sysctl.h>
#include <sys/time.h>
#endif
#include "../util.h"
#if defined(__linux__)
const char *
uptime(void)
{
#include <sys/sysinfo.h>
const char *
uptime(void)
{
int h;
int m;
int uptime = 0;
@ -27,11 +23,14 @@ uptime(void)
m = (uptime - h * 3600) / 60;
return bprintf("%dh %dm", h, m);
}
}
#elif defined(__OpenBSD__)
const char *
uptime(void)
{
#include <sys/sysctl.h>
#include <sys/time.h>
const char *
uptime(void)
{
int h;
int m;
int uptime = 0;
@ -59,5 +58,5 @@ uptime(void)
m = (uptime - h * 3600) / 60;
return bprintf("%dh %dm", h, m);
}
}
#endif

56
components/wifi.c
View file

@ -1,20 +1,20 @@
/* See LICENSE file for copyright and license details. */
#if defined(__linux__)
#include <errno.h>
#include <ifaddrs.h>
#include <linux/wireless.h>
#include <sys/socket.h>
#include <stdio.h>
#include <limits.h>
#include <string.h>
#include <sys/ioctl.h>
#include <unistd.h>
#include <errno.h>
#include <ifaddrs.h>
#include <linux/wireless.h>
#include <sys/socket.h>
#include <stdio.h>
#include <limits.h>
#include <string.h>
#include <sys/ioctl.h>
#include <unistd.h>
#include "../util.h"
#include "../util.h"
const char *
wifi_perc(const char *iface)
{
const char *
wifi_perc(const char *iface)
{
int i, cur;
float perc;
int total = 70; /* the max of /proc/net/wireless */
@ -23,10 +23,12 @@ wifi_perc(const char *iface)
char status[5];
FILE *fp;
snprintf(path, sizeof(path), "%s%s%s", "/sys/class/net/", iface, "/operstate");
snprintf(path, sizeof(path), "%s%s%s", "/sys/class/net/", iface,
"/operstate");
fp = fopen(path, "r");
if (fp == NULL) {
fprintf(stderr, "fopen '%s': %s\n", path, strerror(errno));
fprintf(stderr, "fopen '%s': %s\n", path,
strerror(errno));
return NULL;
}
p = fgets(status, 5, fp);
@ -37,7 +39,8 @@ wifi_perc(const char *iface)
fp = fopen("/proc/net/wireless", "r");
if (fp == NULL) {
fprintf(stderr, "fopen '/proc/net/wireless': %s\n", strerror(errno));
fprintf(stderr, "fopen '/proc/net/wireless': %s\n",
strerror(errno));
return NULL;
}
@ -53,16 +56,17 @@ wifi_perc(const char *iface)
return NULL;
datastart = (datastart+(strlen(iface)+1));
sscanf(datastart + 1, " %*d %d %*d %*d %*d %*d %*d %*d %*d %*d", &cur);
sscanf(datastart + 1, " %*d %d %*d %*d\t\t %*d\t "
"%*d\t\t%*d\t\t %*d\t %*d\t\t %*d", &cur);
perc = (float)cur / total * 100.0;
return bprintf("%.0f", perc);
}
}
const char *
wifi_essid(const char *iface)
{
const char *
wifi_essid(const char *iface)
{
static char id[IW_ESSID_MAX_SIZE+1];
int sockfd = socket(AF_INET, SOCK_DGRAM, 0);
struct iwreq wreq;
@ -72,12 +76,14 @@ wifi_essid(const char *iface)
snprintf(wreq.ifr_name, sizeof(wreq.ifr_name), "%s", iface);
if (sockfd == -1) {
fprintf(stderr, "socket 'AF_INET': %s\n", strerror(errno));
fprintf(stderr, "socket 'AF_INET': %s\n",
strerror(errno));
return NULL;
}
wreq.u.essid.pointer = id;
if (ioctl(sockfd,SIOCGIWESSID, &wreq) == -1) {
fprintf(stderr, "ioctl 'SIOCGIWESSID': %s\n", strerror(errno));
fprintf(stderr, "ioctl 'SIOCGIWESSID': %s\n",
strerror(errno));
close(sockfd);
return NULL;
}
@ -88,5 +94,7 @@ wifi_essid(const char *iface)
return NULL;
else
return id;
}
}
#elif defined(__OpenBSD__)
/* unimplemented */
#endif