GopherProxy

	slstatus-dyn_battery-20250414-f68f492.diff - sites - public wiki contents of su…
	git clone git://git.suckless.org/sites
	Log
	Files
	Refs
	---
	slstatus-dyn_battery-20250414-f68f492.diff (4376B)
	---
	1 From b96a72c277a72c77feaf94fac679f3ea87f78ea6 Mon Sep 17 00:00:00 2001
	2 From: Madison Lynch <[email protected]>
	3 Date: Mon, 14 Apr 2025 21:04:23 -0700
	4 Subject: [PATCH] Created dyn-battery patch, for displaying status of mul…
	5 batteries
	6
	7 ---
	8 Makefile \| 1 +
	9 components/dyn_battery.c \| 77 ++++++++++++++++++++++++++++++++++++++++
	10 config.def.h \| 4 +++
	11 slstatus.h \| 3 ++
	12 4 files changed, 85 insertions(+)
	13 create mode 100644 components/dyn_battery.c
	14
	15 diff --git a/Makefile b/Makefile
	16 index 7a18274..d1b24dd 100644
	17 --- a/Makefile
	18 +++ b/Makefile
	19 @@ -11,6 +11,7 @@ COM =\
	20 components/cpu\
	21 components/datetime\
	22 components/disk\
	23 + components/dyn_battery\
	24 components/entropy\
	25 components/hostname\
	26 components/ip\
	27 diff --git a/components/dyn_battery.c b/components/dyn_battery.c
	28 new file mode 100644
	29 index 0000000..2e58351
	30 --- /dev/null
	31 +++ b/components/dyn_battery.c
	32 @@ -0,0 +1,77 @@
	33 +/* Written by Madison Lynch <[email protected]> */
	34 +/* Only Linux is supported */
	35 +#include <stdio.h>
	36 +#include <stdlib.h>
	37 +#include <string.h>
	38 +#include <dirent.h>
	39 +
	40 +#include "../slstatus.h"
	41 +
	42 +#define BAT_PREFIX "BAT"
	43 +#define BAT_DIR "/sys/class/power_supply"
	44 +
	45 +/**
	46 +* Counts number of batteries detected by system.
	47 +*
	48 +* @return unsigned integer denoting the number of detected batteries.
	49 +* @author Madison Lynch
	50 +*/
	51 +static unsigned int
	52 +battery_count(void) {
	53 + DIR *dir = opendir(BAT_DIR);
	54 + unsigned int bat_c = 0;
	55 +
	56 + struct dirent *entry;
	57 + while((entry = readdir(dir)))
	58 + if(strlen(entry->d_name) > 3)
	59 + if(strncmp(entry->d_name, BAT_PREFIX, 3) == 0)
	60 + bat_c++;
	61 +
	62 + (void) closedir(dir);
	63 + return bat_c;
	64 +}
	65 +
	66 +/**
	67 +* Displays the status and capacity of a dynamic amount of batteries (i.…
	68 +* laptop may have secondary external battery).
	69 +*
	70 +* @param fmt format string to use for each battery display. ordered ke…
	71 +* %u: battery number \|\| %s: battery state \|\| %s battery cap…
	72 +* @return string containing the status and capacities of all detected b…
	73 +* @author Madison Lynch
	74 +*/
	75 +const char *
	76 +dyn_battery(const char *fmt) {
	77 + const size_t fmt_s = strlen(fmt);
	78 + const unsigned int bat_c = battery_count();
	79 +
	80 + // Extra byte in calloc() for null byte
	81 + char output = (char )calloc(fmt_s * bat_c + 1, sizeof(char));
	82 + unsigned int displacement = 0; // For appending battery displays
	83 + for(unsigned int i=0; i<bat_c; i++) {
	84 + char bat[7]; // "BAT" = 3 + <=3 digit number + null byte
	85 + sprintf(bat, "BAT%u", i);
	86 +
	87 + // Add battery display to final string to be returned
	88 + sprintf(
	89 + output + displacement,
	90 + fmt,
	91 + i,
	92 + battery_state(bat),
	93 + battery_perc(bat)
	94 + );
	95 + displacement = strlen(output);
	96 +
	97 + // Add space between battery displays
	98 + *(output + displacement) = ' ';
	99 + displacement++;
	100 + }
	101 +
	102 + // Remove extra space after last battery display
	103 + output[--displacement] = 0x00;
	104 +
	105 + return output;
	106 +}
	107 +
	108 +#undef BAT_DIR
	109 +#undef BAT_PREFIX
	110 diff --git a/config.def.h b/config.def.h
	111 index d805331..967d63d 100644
	112 --- a/config.def.h
	113 +++ b/config.def.h
	114 @@ -26,6 +26,10 @@ static const char unknown_str[] = "n/a";
	115 * disk_perc disk usage in percent mountpoint path …
	116 * disk_total total disk space in GB mountpoint path …
	117 * disk_used used disk space in GB mountpoint path …
	118 + * dyn_battery displays the name, state and format string (%…
	119 + * capacity of all detected %s). order is im…
	120 + * batteries and matches desc…
	121 + * (Linux only)
	122 * entropy available entropy NULL
	123 * gid GID of current user NULL
	124 * hostname hostname NULL
	125 diff --git a/slstatus.h b/slstatus.h
	126 index 8ef5874..44a4b61 100644
	127 --- a/slstatus.h
	128 +++ b/slstatus.h
	129 @@ -21,6 +21,9 @@ const char disk_perc(const char path);
	130 const char disk_total(const char path);
	131 const char disk_used(const char path);
	132
	133 +/* dyn_battery */
	134 +const char dyn_battery(const char fmt);
	135 +
	136 /* entropy */
	137 const char entropy(const char unused);
	138
	139 --
	140 2.49.0
	141