bar

commit 52c0b905a20dd9d28afa542efb660e4884ae80e1
Author: thing1 <thing1@seacrossedlovers.xyz>
Date:   Thu, 25 Sep 2025 09:39:55 +0100

init commit

Diffstat:
A
Makefile
 | 
15
+++++++++++++++
A
bar
 | 
0

A
bar.c
 | 
25
+++++++++++++++++++++++++
A
bar.sh
 | 
6
++++++
A
config.h
 | 
73
+++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++

5 files changed, 119 insertions(+), 0 deletions(-)
diff --git a/Makefile b/Makefile
@@ -0,0 +1,15 @@
+CLFAGS=-Os
+
+all: bar
+
+bar: bar.c config.h
+	cc bar.c -o bar ${CFLAGS}
+clean:
+	rm -rf bar
+install: bar
+	cp bar /usr/local/bin/
+	cp bar.sh /usr/local/bin/
+uninstall: bar
+	rm /usr/local/bin/bar
+	rm /usr/local/bin/bar.sh
+
diff --git a/bar b/bar
Binary files differ.
diff --git a/bar.c b/bar.c
@@ -0,0 +1,25 @@
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+#include <unistd.h>
+
+#include "config.h"
+#define LEN(x) sizeof(x) / sizeof(x[0])
+
+char *
+update_bar() {
+	static char bar[MAXBAR] = { 0 };
+	int off = 0;
+	for (int i = 0; i < LEN(entrys); i++) 
+		off += snprintf(bar + off, MAXBAR - off, "%s%s%s", 
+				(i == 0) ? "" : SEP,
+				entrys[i].func(),
+				(i != LEN(entrys)) ? "" : SEP
+			       );
+	return bar;
+}
+
+int 
+main() {
+	printf("%s\n", update_bar());
+}
diff --git a/bar.sh b/bar.sh
@@ -0,0 +1,6 @@
+#!/bin/sh
+
+while [ 1 ]; do
+	xsetroot -name "$(bar)"
+	sleep 30 
+done
diff --git a/config.h b/config.h
@@ -0,0 +1,73 @@
+#include <time.h>
+#include <stdio.h>
+#include <assert.h>
+
+#define MAXBAR 256
+#define SEP " | "
+
+enum units {
+	KB = 0,
+	MB = 1,
+	GB = 2,
+} unit;
+
+float
+human(float num) {
+	unit = 0;
+	while ((num / 1000) > 1) {
+		num /= 1000;
+		unit++;
+	}
+	return num;
+}
+
+char *
+unitstr() {
+	switch (unit) {
+	case KB: return "kb";
+	case MB: return "mb";
+	case GB: return "gb";
+	}
+	return "";
+}
+
+char *
+get_time() {
+	time_t t = time(NULL);
+	struct tm *tval = localtime(&t);
+	static char timestr[32];
+	strftime(timestr, 32, "date: %m/%d %H:%M", tval);
+	return timestr;
+}
+
+char *
+get_mem() {
+	static char memstr[32];
+	float total, available, used;
+	char line[128] = {0}, *tok, *usedstr, *totalstr;
+	FILE *f = fopen("/proc/meminfo", "r"); /* only works on linux systems */
+
+	while (fgets(line, 128, f)) {
+		assert((tok = strtok(line, ":")));
+		if (strcmp(tok, "MemTotal") == 0)
+			total = atoi(strtok(NULL, ""));
+		else if (strcmp(tok, "MemAvailable") == 0)
+			available = atoi(strtok(NULL, ""));
+	}
+	fclose(f);
+
+	used = human(total - available);
+	usedstr = unitstr();
+	total = human(total);
+	totalstr = unitstr();
+
+	snprintf(memstr, 32, "mem: %.1f%s/%.1f%s", used, usedstr, total, totalstr);
+	return memstr;
+}
+
+struct entry {
+	char *(*func)();
+} entrys[] = {
+	{get_mem},
+	{get_time},
+};