slstatus

status monitor
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commit 69b2487650782f135db76078c4a7fb841cb936ac
parent c46c1487a986496dd813ec52e17e5bf9ba10fd84
Author: drkhsh <me@drkhsh.at>
Date:   Thu, 27 Oct 2022 23:44:52 +0200

various: Put paths into defines to avoid line wraps

Long, wrapped, multi-line if statements suck to read.
This fixes readability in the worst places by packing format strings for
paths into defines.

Diffstat:
Mcomponents/battery.c | 46++++++++++++++++++++++------------------------
Mcomponents/cpu.c | 6+++---
Mcomponents/entropy.c | 6+++---
Mcomponents/netspeeds.c | 13+++++--------
Mcomponents/wifi.c | 6+++---
5 files changed, 36 insertions(+), 41 deletions(-)

diff --git a/components/battery.c b/components/battery.c @@ -10,6 +10,13 @@ #include <stdint.h> #include <unistd.h> + #define POWER_SUPPLY_CAPACITY "/sys/class/power_supply/%s/capacity" + #define POWER_SUPPLY_STATUS "/sys/class/power_supply/%s/status" + #define POWER_SUPPLY_CHARGE "/sys/class/power_supply/%s/charge_now" + #define POWER_SUPPLY_ENERGY "/sys/class/power_supply/%s/energy_now" + #define POWER_SUPPLY_CURRENT "/sys/class/power_supply/%s/current" + #define POWER_SUPPLY_POWER "/sys/class/power_supply/%s/power" + static const char * pick(const char *bat, const char *f1, const char *f2, char *path, size_t length) @@ -33,10 +40,8 @@ int perc; char path[PATH_MAX]; - if (esnprintf(path, sizeof(path), - "/sys/class/power_supply/%s/capacity", bat) < 0) { + if (esnprintf(path, sizeof(path), POWER_SUPPLY_CAPACITY, bat) < 0) return NULL; - } if (pscanf(path, "%d", &perc) != 1) { return NULL; } @@ -59,10 +64,8 @@ size_t i; char path[PATH_MAX], state[12]; - if (esnprintf(path, sizeof(path), - "/sys/class/power_supply/%s/status", bat) < 0) { + if (esnprintf(path, sizeof(path), POWER_SUPPLY_STATUS, bat) < 0) return NULL; - } if (pscanf(path, "%12[a-zA-Z ]", state) != 1) { return NULL; } @@ -82,28 +85,22 @@ double timeleft; char path[PATH_MAX], state[12]; - if (esnprintf(path, sizeof(path), - "/sys/class/power_supply/%s/status", bat) < 0) { + if (esnprintf(path, sizeof(path), POWER_SUPPLY_STATUS, bat) < 0) return NULL; - } if (pscanf(path, "%12[a-zA-Z ]", state) != 1) { return NULL; } - if (!pick(bat, "/sys/class/power_supply/%s/charge_now", - "/sys/class/power_supply/%s/energy_now", path, + if (!pick(bat, POWER_SUPPLY_CHARGE, POWER_SUPPLY_ENERGY, path, sizeof(path)) || - pscanf(path, "%ju", &charge_now) < 0) { + pscanf(path, "%ju", &charge_now) < 0) return NULL; - } if (!strcmp(state, "Discharging")) { - if (!pick(bat, "/sys/class/power_supply/%s/current_now", - "/sys/class/power_supply/%s/power_now", path, + if (!pick(bat, POWER_SUPPLY_CURRENT, POWER_SUPPLY_POWER, path, sizeof(path)) || - pscanf(path, "%ju", &current_now) < 0) { + pscanf(path, "%ju", &current_now) < 0) return NULL; - } if (current_now == 0) { return NULL; @@ -201,6 +198,10 @@ #elif defined(__FreeBSD__) #include <sys/sysctl.h> + #define BATTERY_LIFE "hw.acpi.battery.life" + #define BATTERY_STATE "hw.acpi.battery.state" + #define BATTERY_TIME "hw.acpi.battery.time" + const char * battery_perc(const char *unused) { @@ -208,8 +209,7 @@ size_t len; len = sizeof(cap); - if (sysctlbyname("hw.acpi.battery.life", &cap, &len, NULL, 0) == -1 - || !len) + if (sysctlbyname(BATTERY_LIFE, &cap, &len, NULL, 0) < 0 || !len) return NULL; return bprintf("%d", cap); @@ -222,8 +222,7 @@ size_t len; len = sizeof(state); - if (sysctlbyname("hw.acpi.battery.state", &state, &len, NULL, 0) == -1 - || !len) + if (sysctlbyname(BATTERY_STATE, &state, &len, NULL, 0) < 0 || !len) return NULL; switch(state) { @@ -244,9 +243,8 @@ size_t len; len = sizeof(rem); - if (sysctlbyname("hw.acpi.battery.time", &rem, &len, NULL, 0) == -1 - || !len - || rem == -1) + if (sysctlbyname(BATTERY_TIME, &rem, &len, NULL, 0) < 0 || !len + || rem < 0) return NULL; return bprintf("%uh %02um", rem / 60, rem % 60); diff --git a/components/cpu.c b/components/cpu.c @@ -7,16 +7,16 @@ #include "../slstatus.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("/sys/devices/system/cpu/cpu0/cpufreq/" - "scaling_cur_freq", "%ju", &freq) != 1) { + if (pscanf(CPU_FREQ, "%ju", &freq) != 1) return NULL; - } return fmt_human(freq * 1000, 1000); } diff --git a/components/entropy.c b/components/entropy.c @@ -6,15 +6,15 @@ #include "../util.h" + #define ENTROPY_AVAIL "/proc/sys/kernel/random/entropy_avail" + const char * entropy(const char *unused) { uintmax_t num; - if (pscanf("/proc/sys/kernel/random/entropy_avail", "%ju", &num) - != 1) { + if (pscanf(ENTROPY_AVAIL, "%ju", &num) != 1) return NULL; - } return bprintf("%ju", num); } diff --git a/components/netspeeds.c b/components/netspeeds.c @@ -8,6 +8,9 @@ #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) { @@ -18,11 +21,8 @@ oldrxbytes = rxbytes; - if (esnprintf(path, sizeof(path), - "/sys/class/net/%s/statistics/rx_bytes", - interface) < 0) { + if (esnprintf(path, sizeof(path), NET_RX_BYTES, interface) < 0) return NULL; - } if (pscanf(path, "%ju", &rxbytes) != 1) { return NULL; } @@ -44,11 +44,8 @@ oldtxbytes = txbytes; - if (esnprintf(path, sizeof(path), - "/sys/class/net/%s/statistics/tx_bytes", - interface) < 0) { + if (esnprintf(path, sizeof(path), NET_TX_BYTES, interface) < 0) return NULL; - } if (pscanf(path, "%ju", &txbytes) != 1) { return NULL; } diff --git a/components/wifi.c b/components/wifi.c @@ -18,6 +18,8 @@ #include <limits.h> #include <linux/wireless.h> + #define NET_OPERSTATE "/sys/class/net/%s/operstate" + const char * wifi_perc(const char *interface) { @@ -28,10 +30,8 @@ char status[5]; FILE *fp; - if (esnprintf(path, sizeof(path), "/sys/class/net/%s/operstate", - interface) < 0) { + if (esnprintf(path, sizeof(path), NET_OPERSTATE, interface) < 0) return NULL; - } if (!(fp = fopen(path, "r"))) { warn("fopen '%s':", path); return NULL;