s2dblocks

commit e29f19386aca78fce2b96b5475a053594eb66aa3
parent 08dff375521b915f8c11c948e3c0393ee370ca2f
Author: hhvn <dev@hhvn.uk>
Date:   Thu, 14 Apr 2022 12:03:47 +0100

Memory handler

Diffstat:
A
handlers/mem.c
 | 
54
++++++++++++++++++++++++++++++++++++++++++++++++++++++

1 file changed, 54 insertions(+), 0 deletions(-)
diff --git a/handlers/mem.c b/handlers/mem.c
@@ -0,0 +1,54 @@
+#include <stdio.h>
+#include <ctype.h>
+#include <string.h>
+#include <stdlib.h>
+#include <sys/sysinfo.h>
+#include "../dwmbar.h"
+
+#define CONSTLEN(str) ((size_t)((sizeof(str) - sizeof(str[0])) / sizeof(str[0])))
+
+int
+main(void) {
+	long double total = 0, used = 0, percent = 0;
+#ifdef __linux__
+	long double avail = 0;
+	char buf[1024], *p;
+	FILE *f;
+
+	if (!(f = fopen("/proc/meminfo", "r"))) {
+		perror("fopen()");
+		return 1;
+	}
+
+	while (fgets(buf, sizeof(buf), f) && (!avail || !total)) {
+		for (p = buf; !isdigit(*p) && *p; p++);
+		if (strncmp(buf, "MemTotal:", CONSTLEN("MemTotal:")) == 0) {
+			total = strtold(p, NULL);
+		} else if (strncmp(buf, "MemAvailable:", CONSTLEN("MemAvailable:")) == 0) {
+			avail = strtold(p, NULL);
+		}
+	}
+	fclose(f);
+
+	used = total - avail;
+#else
+	s2d_print("no handler for this OS");
+	s2d_finish();
+#endif
+	percent = (used / total) * 100;
+	s2d_bg(BRBG);
+	if (percent >= 75)
+		s2d_fg(RED);
+	else if (percent >= 60)
+		s2d_fg(ORANGE);
+	else if (percent >= 50)
+		s2d_fg(YELLOW);
+	else
+		s2d_fg(GREEN);
+	s2d_bar(0, 2, 3, bar_height - 4, 1, percent);
+	s2d_reset(0, 1);
+	s2d_forward(-1);
+	s2d_forward(2);
+	s2d_print("%.0LF%%", percent);
+	s2d_finish();
+}